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10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 1/33PatentsPublication number CA2741523 A1Publication type ApplicationApplication number CA 2741523PCT number PCT/US2009/062079Publication date Apr 29, 2010Filing date Oct 26, 2009Priority date Oct 24, 2008Also published as EP2350270A2, 4 More »Inventors Jonathan S. Towner, 4 More »Applicant Jonathan S. Towner, 5 More »Export Citation BiBTeX, EndNote, RefManClassifications (21), Legal Events (1)External Links: CIPO, EspacenetCLAIMS (30)1. An isolated hEbola virus comprising a nucleic acid molecule comprising anucleotide sequence of:a) a nucleotide sequence set forth in SEQ ID NOS: 1 or 10;b) a nucleotide sequence hybridizing under stringent conditions to SEQ IDNOS:1 or 10; or c) a nucleotide sequence of at least 70%-99% identity to the SEQ IDNOS: 1 or 10.2. An isolated hEbola virus having Centers for Disease Control DepositAccession No.200706291.3. The hEbola virus of any one of claims 1 or 2 which is killed.4. The hEbola virus of claim 1 which is an attenuated hEbola virus.5. The virus of claim 4 wherein at least one property of the attenuatedhEbola virus is reduced from among infectivity, replication ability,protein synthesis ability, assembling ability or cytopathic effect.6. An isolated nucleic acid molecule comprising the nucleotide sequence ofSEQIDNOS: 1 or 10 or a complement thereof.7. An isolated nucleic acid molecule comprising a nucleotide sequence ofbetween 4 and 4900 contiguous nucleotides of the nucleotide sequence of SEQID NOS: 1 or 10, or a complement thereof; with the proviso that said nucleotidesequence is not comprised by the nucleotide sequence set forth in SEQ ID NO:20; or between 5500 and 6600 contiguous nucleotides of the nucleotidesequence of SEQ ID NOS: 1 or 10, or a complement thereof.8. An isolated nucleic acid molecule comprising a nucleotide sequence thatencodes the amino acid sequence of SEQ ID NO: 2-9, 59, or SEQ ID NO: 11-19or a complement of said nucleotide sequence.9. An isolated RNA or DNA nucleic acid molecule which hybridizes understringent conditions to a nucleic acid molecule having the nucleotide sequenceof SEQ IDNOS: 1 or 10 or a complement thereof.Human ebola virus species and compositionsand methods thereofCA 2741523 A1ABSTRACTCompositions and methods including and related to the Ebola Bundibugyo virus(EboBun) are provided.Compositions are provided that are operable as immunogens to elicit andimmune response or protection from EboBun challenge in a subject such as aprimate. Inventive methods are directed to detection and treatment of EboBuninfection.DESCRIPTION (OCR text may contain errors)HUMAN EBOLA VIRUS SPECIES AND COMPOSITIONS AND METHODSTHEREOFDEPOSIT STATEMENT[0001] The invention provides the isolated human Ebola (hEbola) virusesdenoted as Bundibugyo (EboBun) deposited with the Centers for DiseaseControl and Prevention ("CDC";Atlanta, Georgia, United States of America) on November 26, 2007 andaccorded an accession number 200706291. This deposit was not made to anInternational Depository Authority (IDA) as established under the BudapestTreaty on the International Recognition of the Deposit of Microorganisms for thePurposes of Patent Procedure, and is a non-Budapest treaty deposit. Thedeposited organism is not acceptable by American Type Culture Collection(ATCC), Manassas, Virginia, an International Depository Authority (IDA) asestablished under the Budapest Treaty on the International Recognition of theDeposit of Microorganisms for the Purposes of Patent Procedure. Samples ofthe stated Deposit Accession No. 200706291 will be made available toapproved facilities for thirty years from the date of deposit, and for the lifetime ofthe patent issuing from, or claiming priority to this application.RELATED APPLICATIONS[0002] This application claims priority benefit of U.S. Provisional Application61/108,175 filed 24 October 2008; the contents of which are herebyincorporated by reference.FIELD OF THE INVENTION[0003] The invention is related to compositions and methods directed to a novelspecies of human Ebola (hEbola) virus.BACKGROUND OF THE INVENTION[0004] The family Filoviridae consists of two genera, Marburgvirus andEbolavirus, which have likely evolved from a common ancestor'. The genusEbolavirus includes four species: Zaire, Sudan, Reston and Cote d'Ivoire (IvoryCoast) ebolaviruses, which have, with the exception of Reston and Cote d'Ivoireebolaviruses, been associated with large hemorrhagic fever (HF) outbreaks inAfrica with high case fatality (53-90%)2.Find prior art Discuss this applicationSign in10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 2/3310. An isolated polypeptide encoded by the nucleic acid molecule ofany one of claims 7-9.11. An isolated polypeptide comprising the amino acid of:a) an amino acid sequence set forth in any of SEQ ID NOS: 2-19, or 59; or b)an amino acid sequence that has 70% - 99% homology to the amino acidsequence of (a).12. An isolated polypeptide comprising the amino acid sequence having to 250contiguous amino acid residues of the amino acid sequence of SEQ IDNOS: 5 or 18 (VP24);5 to 280 contiguous residues of the amino acid sequence of SEQ ID NOS: 6 or17 (VP30);5 to 320 contiguous residues of the amino acid sequence of SEQ ID NOS: 8 or13 (VP40);5 to 340 contiguous residues of the amino acid sequence of SEQ ID NOS: 7 or12 (VP35);5 to 370 contiguous residues of the amino acid sequence of SEQ ID NOS: 4 or15 (SGP);5 to 370 contiguous residues of the amino acid sequence of SEQ ID NOS: 59 or16 (SSGP);5 to 670 contiguous residues of the amino acid sequence of SEQ ID NOS: 9 or14 (GP);5 to 730 contiguous residues of the amino acid sequence of SEQ ID NOS: 3 or11 (NP); or 5 to 2200 contiguous residues of the amino acid sequence of SEQID NOS: 2 or 19 (L).13. An isolated antibody or an antigen-binding fragment thereof whichimmunospecifically binds to the hEbola virus of any one of claims 1or 2or neutralizes the virus.14. An isolated antibody or an antigen-binding fragment thereof whichimmunospecifically binds to the polypeptide of any one of claims 11 or12 or neutralizes an hEbola virus.15. A method for detecting the presence of a the hEbola virus or anucleic acid molecule derived therefrom of claim 1 in a biologicalsample, said method comprising:(a) contacting the sample with an agent that selectively binds to thevirus or the nucleic acid molecule derived therefrom; and (b) detectingwhether the compound binds to the virus or the nucleic acid moleculederived therefrom in the sample.16. The method of claim 15, wherein the agent is an antibody.17. The method of claim 15, wherein the agent is a nucleic acidmolecule comprising a nucleotide sequence having between 4 and6600 contiguous nucleotides of the nucleotide sequence of SEQ IDNOS: 1 or 10, or a complement thereof.18. A method for detecting the presence of the polypeptide of claim 11in a biological sample, said method comprising:(a) contacting the biological sample with an agent that selectively bindsto said polypeptide; and (b) detecting whether the compound binds tosaid polypeptide in the sample.19. The method of claim 18, wherein the agent is an antibody or anantigen-binding fragment thereof.20. A formulation comprising the hEbola virus of any one of claims 3 or4, and a pharmaceutically acceptable carrier.21. A formulation comprising an amount of a protein extract of thehEbola virus of claim 3 or 4 or a subunit thereof, and a[0005] Viruses of each species have genomes that are at least 30-40%divergent from one another, a level of diversity that presumably reflectsdifferences in the ecologic niche they occupy and in their evolutionary history.Identification of the natural reservoir of ebolaviruses remains somewhat elusive,although recent PCR and antibody data suggest that three species of arborealfruit bats may be carriers of Zaire ebolavirus3. No data has yet been publishedto suggest reservoirs for the Sudan, Reston and Cote d'Ivoire ebolavirusspecies. However, a cave-dwelling fruit bat has been recently implicated as anatural host for marburgvirus4' s, supporting the hypothesis that different batspecies may be the reservoir hosts for the various filoviruses.[0006] Filovirus outbreaks are sporadic, sometimes interspersed by years oreven decades of no apparent disease activity. The last new species ofebolavirus was discovered 14 years ago (1994), in Cote d'Ivoire (Ivory Coast),and involved a single non-fatal case, a veterinarian who performed an autopsyon an infected chimpanzee found in the Tai Forest6. No further disease reportshave been associated with Cote d'Ivoire ebolavirus, in contrast to Zaire andSudan ebolaviruses which have each caused multiple large outbreaks over thesame time period.[0007] In late November 2007, HF cases were reported in the townships ofBundibugyo and Kikyo in Bundibugyo District, Western Uganda. The outbreakcontinued through January 2008, and resulted in approximately 149 cases and37 deaths. Laboratory investigation of the initial 29 suspect-case bloodspecimens by classic methods (antigen capture, IgM and IgGELISA) and a recently developed random-primed pyrosequencing approachidentified this to be an Ebola HFoutbreak associated with a new discovered ebolavirus species. Thesespecimens were negative when initially tested with highly sensitive real-timeRT-PCR assays specific for all known Zaire and Sudan ebolaviruses andMarburg viruses. This new species is referred to herein as "the Bundibugyospecies", abbreviated "EboBun".[0008] Accordingly, compositions and methods directed to the new Ebola virusspecies are described herein and the most closely related Ebola Ivory Coastspecies, which compositions and methods are useful for diagnosis andprevention of human Ebola virus infection; including related vaccinedevelopment, and prevention of hemorrhagic fever in a human population.SUMMARY OF THE INVENTION[0009] The present invention is based upon the isolation and identification of anew human Ebola virus species, EboBun. EboBun was isolated from thepatients suffering from hemorrhagic fever in a recent outbreak in Uganda. Theisolated virus is a member of the Filoviridae family, a family of negative senseRNA viruses. Accordingly, the invention relates to the isolated EboBun virusthat morphologically and phylogenetically relates to known members filoviridae.[0010] In one aspect, the invention provides the isolated EboBun virusdeposited with the Centers for Disease Control and Prevention ("CDC"; Atlanta,Georgia, United States of America) on November 26, 2007 and accorded anaccession number 200706291, as stated in the paragraph entitled "DEPOSITSTATEMENT" supra.[0011] In another aspect, the invention provides an isolated hEbola EboBunvirus comprising a nucleic acid molecule comprising a nucleotide sequenceselected from the group consisting of: a) a nucleotide sequence set forth in SEQID NO: 1; b) a nucleotide sequence that hybridizes to the sequence set forth inSEQ ID NO: 1 under stringent conditions; and c) a nucleotide sequence thathas at least 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98%, or 99% identityto the SEQ ID NO:1. In another aspect, the invention provides the complete genomic sequence ofthe hEbola virus EboBun.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 3/33pharmaceutically acceptable carrier.22. A formulation comprising an amount of a nucleic acid molecule of thenucleotide sequence of SEQ ID NOS: 1 or 10 or a complement thereof, and apharmaceutically acceptable carrier.23. A formulation comprising an immunogenically effective amount ofthe nucleic acid molecule of claim 9 or a complement thereof, and apharmaceutically acceptable carrier.24. A vaccine formulation comprising a therapeutically orprophylactically effective amount of the hEbola virus of claim 3 or 4 ora protein extract therefrom, and a pharmaceutically acceptable carrier.25. A vaccine formulation comprising a therapeutically or prophylacticallyeffective amount of a nucleic acid molecule SEQ ID NOS: 1 or 10 or acomplement thereof, and a pharmaceutically acceptable carrier.26. A vaccine formulation comprising a therapeutically orprophylactically effective amount of a nucleic acid molecule of claim 9or a complement thereof, and a pharmaceutically acceptable carrier.27. A pharmaceutical composition comprising a prophylactically ortherapeutically effective amount of an anti-hEbola agent of an antibody or anantigen-binding fragment thereof which immunospecifically binds to the hEbolavirus of Deposit Accession No.200706291, or polypeptides or protein derived therefrom and optionally has thenucleotide sequence of SEQ IDNOS: 1 or 10, or a fragment thereof.28. A kit comprising a container containing the formulation of any oneof claims 24-26.29. A method for identifying a subject infected with the virus of claim 1or 2, comprising:(a) obtaining total RNA from a biological sample obtained from thesubject;(b) reverse transcribing the total RNA to obtain cDNA; and (c)amplifying the cDNA using a set of primers derived from a nucleotidesequence of the virus of claim 1 or 2.30. A primer that has the nucleotide sequence of one of SEQ ID NOS: 24-57.[0012] In a related aspect, the invention provides nucleic acid moleculesisolated from EboBun, or fragments thereof.[0013] In another aspect, the invention provides proteins or polypeptides thatare isolated from the EboBun, including viral proteins isolated from cellsinfected with the virus but not present in comparable uninfected cells; orfragments thereof. In one embodiment of the present invention, the amino acidsequences of the proteins or polypeptides are set forth in SEQ IDNOS: 2-9 and 59, or fragments thereof.[0014] In a related aspect, the invention provides an isolated polypeptideencoded by the nucleic acid molecule of the inventive hEbola EboIC (SequenceID No. 10) virus described above.[0015] In another aspect, the invention provides an isolated hEbola EboICvirus comprising a nucleic acid molecule comprising a nucleotide sequenceselected from the group consisting of: a) a nucleotide sequence set forth in SEQID NO: 10; b) a nucleotide sequence that hybridizes to the sequence set forth inSEQ ID NO: 10 under stringent conditions; and c) a nucleotide sequence thathas at least 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98%, or 99% identityto the SEQ ID NO:10. In another aspect, the invention provides the complete genomic sequenceof the hEbola virus EboIC.[0016] In a related aspect, the invention provides nucleic acid moleculesisolated from EboIC, or fragments thereof.[0017] In another aspect, the invention provides proteins or polypeptides thatare isolated from the EboIC, including viral proteins isolated from cells infectedwith the virus but not present in comparable uninfected cells; or fragmentsthereof. In one embodiment of the present invention, the amino acid sequencesof the proteins or polypeptides are set forth in SEQ IDNOs: 11-19, or fragments thereof.[0018] In a related aspect, the invention provides an isolated polypeptideencoded by the nucleic acid molecule of the inventive hEbola EboIC virusdescribed above.[0019] In other aspects, the invention relates to the use of the isolated hEbolavirus for diagnostic and therapeutic methods based on EbBun, EboIC, or acombination thereof. In one embodiment, the invention provides a method ofdetecting in a biological sample an antibody immunospecific for the genus ofWest Afrin Ebola Species constituting hEbola EbBun and EboICvirus using at least one the inventive isolated hEbola virus described herein, orany of the inventive proteins or polypeptides as described herein. In another specific embodiment, the invention provides amethod of screening for an antibody which immunospecifically binds and neutralizes hEbola EboBun. Such an antibody isuseful for a passive immunization or immunotherapy of a subject infected with hEbola.[0020] In another aspect, the invention provides an isolated antibody or an antigen-binding fragment thereof whichimmunospecifically binds to the hEbola virus of the invention described above.[0021] In other aspects, the invention provides methods for detecting the presence, activity or expression of the Glade ofBundibungyo-Ivory Coast hEbola virus in a biological material, such as cells, blood, saliva, urine, feces and so forth; andspecifically at least one of EbBun or EboIC.[0022] In a related aspect, the invention provides a method for detecting the presence of the inventive hEbola virusdescribed above in a biological sample, the method includes (a) contacting the sample with an agent that selectively bindsto a West African hEbola virus; and (b) detecting whether the compound binds to the West African hEbola virus in thesample.[0023] In another aspect, the invention provides a method for detecting the presence of the inventive polypeptidedescribed above, in a biological sample, said method includes (a) contacting the biological sample with an agent thatselectively binds to the polypeptide;and (b) detecting whether the agent binds to the polypeptide in the sample. In another aspect, the invention provides amethod for detecting the presence of a first nucleic acid molecule derived from the inventive hEbola virus described above10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 4/33in a biological sample, the method comprising: (a) contacting the biological sample with an agent that selectively binds tothe polypeptide; and (b) detecting whether the agent binds to the polypeptide in the sample.[0024] In another aspect, the invention provides a method for propagating the hEbola virus in host cells comprisinginfecting the host cells with the inventive isolated hEbola virus described above, culturing the host cells to allow the virus tomultiply, and harvesting the resulting virions.Also provided by the present invention are host cells infected with the inventive hEbola virus 5 described above.[0025] In another aspect, the invention provides a method of detecting in a biological sample the presence of an antibodythat immunospecifically binds hEbola virus, the method comprising: (a) contacting the biological sample with the inventivehost cell host described above; and (b) detecting the antibody bound to the cell.[0026] In another aspect, the invention provides vaccine preparations, comprising the inventive hEbola virus, includingrecombinant and chimeric forms of the virus, nucleic acid molecules comprised by the virus, or protein subunits of thevirus. The invention also provides a vaccine formulation comprising a therapeutically or prophylactically effective amountof the inventive hEbola virus described above, and a pharmaceutically acceptable carrier. In one embodiment, theinvention provides a vaccine formulation comprising a therapeutically or prophylactically effective amount of a proteinextract of the inventive hEbola virus described above, or a subunit thereof; and a pharmaceutically acceptable carrier. Inanother, the invention provides a vaccine formulation comprising a therapeutically or prophylactically effective amount of anucleic acid molecule comprising the nucleotide sequence of SEQ ID NO: 1 or a complement thereof, and apharmaceutically acceptable carrier. In another, the invention provides a vaccine formulation comprising a therapeuticallyor prophylactically effective amount of a nucleic acid molecule comprising any of inventive the nucleotide sequences asdescribed above, or a complement thereof, and a pharmaceutically acceptable carrier.[0027] In a related aspect, the invention provides an immunogenic formulation comprising an immunogenically effectiveamount of the inventive hEbola virus described above, and a pharmaceutically acceptable carrier. In another relatedaspect, the invention provides an immunogenic formulation comprising an immunogenically effective amount of a proteinextract of the inventive hEbola virus described above or a subunit thereof, and a pharmaceutically acceptable carrier. Inanother related aspect, the invention provides an immunogenic formulation comprising an immunogenically effectiveamount of a nucleic acid molecule comprising the nucleotide sequence of SEQ ID NO: 1 or a complement thereof, and apharmaceutically acceptable carrier. In another related aspect, the invention provides an immunogenic formulationcomprising an immunogenically effective amount of a nucleic acid molecule comprising the inventive nucleotide sequenceas described above or a complement thereof, and a pharmaceutically acceptable carrier. In another related aspect, theinvention provides an immunogenic formulation comprising an immunogenically effective amount of any of the inventivepolypeptides described above.[0028] In another aspect, the present invention provides pharmaceutical compositions comprising antiviral agents of thepresent invention and a pharmaceutically acceptable carrier. In a specific embodiment, the antiviral agent of the inventionis an antibody that immunospecifically binds hEbola virus or any hEbola epitope. In another specific embodiment, theantiviral agent is a polypeptide or protein of the present invention or nucleic acid molecule of the invention.[0029] In a related aspect, the invention provides a pharmaceutical composition comprising a prophylactically ortherapeutically effective amount of an anti-hEbola EboBun agent and a pharmaceutically acceptable carrier.[0030] The invention also provides kits containing compositions and formulations of the present invention. Thus, in anotheraspect, the invention provides a kit comprising a container containing the inventive immunogenic formulation describedabove. In another aspect, the invention provides a kit comprising a container containing the inventive vaccine formulationdescribed above. In another, the invention provides a kit comprising a container containing the inventive pharmaceuticalcomposition described above. In another, the invention provides a kit comprising a container containing the inventivevaccine formulation described above. In another, the invention provides a method for identifying a subject infected with theinventive hEbola virus described above, comprising: (a) obtaining total RNA from a biological sample obtained from thesubject; (b) reverse transcribing the total RNA to obtain cDNA; and (c) amplifying the cDNA using a set of primers derivedfrom a nucleotide sequence of the inventive hEbola virus described above.[0031] The invention further relates to the use of the sequence information of the isolated virus for diagnostic andtherapeutic methods.[0032] In another aspect, the present invention provides methods for screening antiviral agents that inhibit the infectivity orreplication of hEbola virus or variants thereof.[0033] The invention further provides methods of preparing recombinant or chimeric forms of hEbola.BRIEF DESCRIPTION OF THE DRAWINGS[0034] FIG. 1 represents a Phylogenetic tree comparing full-length genomes of Ebolavirus and Marburg virus by Bayesian10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 5/33analysis;[0035] FIG. 2 represents an alignment of genomes of novel hEbola EboBun (SEQID NO: 1) referred to below as "Ebola Bundibugyo" or "EboBun", and hEbola Zaire (SEQ IDNO: 20);referred to below as "Ebola Zaire `76" or "EboZ" and hEbola Ivory Coast (SEQID NO: 10) also referred to below as "EboIC".DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS[0036] It is to be understood that the present invention is not limited to particular embodiments described, as such may, ofcourse, vary. It is also to be understood that the terminology used herein is for the purpose of describing particularembodiments only, and is not intended to be limiting.[0037] Due to the sequence divergence of EboBun relative to all previously recognized ebolaviruses, the present inventionhas utility in design of diagnostic assays to monitor Ebola HFdisease in humans and animals, and develop effective antivirals and vaccines.[0038] The EboBun virus of the present invention is genetically distinct, differing by more than 30% at the genome levelfrom all other known ebolavirus species. The unique nature of this virus created challenges for traditional filovirusmolecular based diagnostic assays and genome sequencing approaches. Instead, over 70% of the virus genome wassequenced using a recently developed random-primed pyrosequencing approach which allowed the rapid development ofmolecular detection assay which were deployed in the disease outbreak response. This random-primed pyrosequencingdraft sequence allowed faster completion of the whole genome sequence using traditional primer walking approach andconfirmation that the EboBun virus represented a new ebolavirus species.Definitions [0039] The definitions herein provided are operative throughout the entire description of the invention set forthherein, including the Summary of the Invention.[0040] The term "an antibody or an antibody fragment that immunospecifically binds a polypeptide of the invention" asused herein refers to an antibody or a fragment thereof that immunospecifically binds to the polypeptide encoded by thenucleotide sequence of SEQ ID NO: 1 (EboBun), or a fragment thereof, and does not non-specifically bind to otherpolypeptides. An antibody or a fragment thereof that immunospecifically binds to the polypeptide of the invention maycross-react with other antigens. Preferably, an antibody or a fragment thereof that immunospecifically binds to apolypeptide of the invention does not cross-react with other antigens.An antibody or a fragment thereof that immunospecifically binds to the polypeptide of the invention can be identified by, forexample, immunoassays or other techniques known to those skilled in the art, or otherwise as described herein.[0041] An "isolated" or "purified" peptide or protein is substantially free of cellular material or other contaminating proteinsfrom the cell or tissue source from which the protein is derived, or substantially free of chemical precursors or otherchemicals when chemically synthesized. The language "substantially free of cellular material" includes preparations of apolypeptide/protein in which the polypeptide/protein is separated from cellular components of the cells from which it isisolated or recombinantly produced. Thus, a polypeptide/protein that is substantially free of cellular material includespreparations of the polypeptide/protein having less than about 30%, 20%, 10%, 5%, 2.5%, or 1% (by dry weight) ofcontaminating protein. When the polypeptide/protein is recombinantly produced, it is also preferably substantially free ofculture medium, i.e., culture medium represents less than about 20%, 10%, or 5% of the volume of the protein preparation.When polypeptide/protein is produced by chemical synthesis, it is preferably substantially free of chemical precursors orother chemicals, i.e., it is separated from chemical precursors or other chemicals which are involved in the synthesis of theprotein. Accordingly, such preparations of the polypeptide/protein have less than about 30%, 20%, 10%, 5% (by dryweight) of chemical precursors or compounds other than polypeptide/protein fragment of interest.In a preferred embodiment of the present invention, polypeptides/proteins are isolated or purified.[0042] An "isolated" nucleic acid molecule is one which is separated from other nucleic acid molecules which are presentin the natural source of the nucleic acid molecule. Moreover, an "isolated" nucleic acid molecule, such as a cDNAmolecule, can be substantially free of other cellular material, or culture medium when produced by recombinanttechniques, or substantially free of chemical precursors or other chemicals when chemically synthesized. In a preferredembodiment of the invention, nucleic acid molecules encoding polypeptides/proteins of the invention are isolated orpurified. The term "isolated" nucleic acid molecule does not include a nucleic acid that is a member of a library that has notbeen purified away from other library clones containing other nucleic acid molecules.[0043] The term "portion" or "fragment" as used herein includes the specified fragment lengths, and all integers inbetween, inclusive of the specified end points in a specified range, and inclusive of any length up to the full length of aprotein, polypeptide, or nucleic acid.[0044] The term "having a biological activity of the protein" or "having biological activities of the polypeptides of theinvention" refers to the characteristics of the polypeptides or proteins having a common biological activity, similar or10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 6/33identical structural domain, and/or having sufficient amino acid identity to the polypeptide encoded by the nucleotidesequence of SEQ IDNO: 1 (EboBun).Such common biological activities of the polypeptides of the invention include antigenicity and immunogenicity.[0045] The term "under stringent condition" refers to hybridization and washing conditions under which nucleotidesequences having at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, or at least 95% identity to eachother remain hybridized to each other. Such hybridization conditions are described in, for example but not limited to,Current Protocols in Molecular Biology, John Wiley & Sons, NY (1989), 6.3.1-6.3.6.; Basic Methods in Molecular Biology,Elsevier Science Publishing Co., Inc., NY (1986), pp. 75-78, and 84-87; and Molecular Cloning, Cold Spring HarborLaboratory, NY (1982), pp. 387-389, and are well known to those skilled in the art. A preferred, non-limiting example ofstringent hybridization conditions is hybridization in 6 x sodium chloride/sodium citrate (SSC), 0.5% SDS at about 68 Cfollowed by one or more washes in 2 x SSC, 0.5% SDS at room temperature. Another preferred, non-limiting example ofstringent hybridization conditions is hybridization in 6 x SSC at about 45 C, followed by one or more washes in 0.2 x SSC,0.1% SDS at about 50-65 C.[0046] The term "variant" as used herein refers either to a naturally occurring genetic mutant of hEbola EboBun, or hEbolaEboIC, or a recombinantly prepared variation of these hEbola species, each of which contain one or more mutations in itsgenome compared to the hEbola of SEQ ID NO:1 or 10. The term "variant" may also refer either to a naturally occurring variation of a given peptide or a recombinantlyprepared variation of a given peptide or protein in which one or more amino acid residues have been modified by aminoacid substitution, addition, or deletion.[0047] "Homology" refers to sequence similarity or, alternatively, sequence identity, between two or more polynucleotidesequences or two or more polypeptide sequences.[0048] The terms "percent identity" and "% identity," as applied to polynucleotide sequences, refer to the percentage ofidentical nucleotide matches between at least two polynucleotide sequences aligned using a standardized algorithm. Suchan algorithm may insert, in a standardized and reproducible way, gaps in the sequences being compared in order tooptimize alignment between two sequences, and therefore achieve a more meaningful comparison of the two sequences.[0049] Percent identity between polynucleotide sequences may be determined using one or more computer algorithms orprograms known in the art or described herein. For example, percent 5 identity can be determined using the defaultparameters of the CLUSTAL Valgorithm as incorporated into the MEGALIGN version 3.12e sequence alignment program. This program is part of theLASERGENE software package, a suite of molecular biological analysis programs (DNASTAR, Madison, Wis.). CLUSTALV is described in Higgins, D. G. and P. M.Sharp (1989;CABIOS 5:151-153) and in Higgins, D. G. et al. (1992; CABIOS 8:189-191). For pairwise 10 alignments of polynucleotidesequences, the default parameters are set as follows: Ktuple=2, gap penalty=5, window=4, and "diagonals saved"=4. The"weighted" residue weight table is selected as the default.[0050] Alternatively, a suite of commonly used and freely available sequence comparison algorithms which can be used isprovided by the National Center for Biotechnology Information (NCBI) Basic Local Alignment Search Tool (BLAST)(Altschul, S. F. et al.(1990) J. Mol. Biol.215:403-410), which is available from several sources, including the NCBI, Bethesda, Md., and on the NCBI World WideWeb site available on the Internet. The BLAST software suite includes various sequence analysis programs including"blastn," that is used to align a known polynucleotide sequence with other polynucleotide sequences from a variety ofdatabases. Also available is a tool called "BLAST 2 Sequences" that is used for direct pairwise comparison of twonucleotide sequences. "BLAST 2 Sequences" can be accessed and used interactively on the Internet via the NCBI WorldWide Web site as well. The "BLAST 2 Sequences" tool can be used for both blastn and blastp (discussed below). BLASTprograms are commonly used with gap and other parameters set to default settings. For example, to compare twonucleotide sequences, one may use blastn with the "BLAST 2 Sequences" tool Version 2Ø12 (Apr. 21, 2000) set at defaultparameters. Such default parameters may be, for example: Matrix:BLOSUM62; Reward for match: 1;Penalty for mismatch: -2; Open Gap: 5 and Extension Gap: 2 penalties; Gap x drop-off: 50;Expect: 10; Word Size: 11; Filter: on.[0051] Percent identity may be measured over the length of an entire defined sequence, for example, as defined by aparticular SEQ ID number, or may be measured over a shorter length, for example, over the length of a fragment takenfrom a larger, defined sequence, for instance, a fragment of at least 20, at least 30, at least 40, at least 50, at least 70, atleast 100, or at least 200 contiguous nucleotides. Such lengths are exemplary only, and it is understood that any fragmentlength supported by the sequences shown herein, in the tables, figures, or sequence listing, may be used to describe alength over which percentage identity may be measured.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 7/33[0052] The phrases "percent identity" and "% identity", as applied to polypeptide sequences, refer to the percentage ofidentical residue matches between at least two polypeptide sequences aligned using a standardized algorithm. Methods ofpolypeptide sequence alignment are well known. Some alignment methods take into account conservative amino acidsubstitutions. Such conservative substitutions, explained in more detail above, generally preserve the charge andhydrophobicity at the site of substitution, thus preserving the structure (and therefore function) of the polypeptide. Thephrases "percent similarity" and "% similarity", as applied to polypeptide sequences, refer to the percentage of residuematches, including identical residue matches and conservative substitutions, between at least two polypeptide sequencesaligned using a standardized algorithm. In contrast, conservative substitutions are not included in the calculation of percentidentity between polypeptide sequences.[0053] Percent identity between polypeptide sequences may be determined using the default parameters of the CLUSTALV algorithm as incorporated into the MEGALIGNversion 3.12e sequence alignment program (described and referenced above). For pairwise alignments of polypeptidesequences using CLUSTAL V, the default parameters are set as follows: Ktuple=l, gap penalty=3, window=5, and"diagonals saved"=5. The PAM250 matrix is selected as the default residue weight table.[0054] Alternatively the NCBI BLAST software suite may be used. For example, for a pairwise comparison of twopolypeptide sequences, one may use the "BLAST 2 Sequences"tool Version 2Ø12 (Apr. 21, 2000) with blastp set at default parameters. Such default parameters may be, for example:Matrix: BLOSUM62; Open Gap: 11 and Extension Gap: 1 penalties; Gap x drop-off: 50;Expect: 10; Word Size: 3; Filter: on.[0055] Percent identity may be measured over the length of an entire defined polypeptide sequence, for example, asdefined by a particular SEQ ID number, or may be measured over a shorter length, for example, over the length of afragment taken from a larger, defined polypeptide sequence, for instance, a fragment of at least 15, at least 20, at least 30,at least 40, at least 50, at least 70 or at least 150 contiguous residues. Such lengths are exemplary only, and it isunderstood that any fragment length supported by the sequences shown herein, in the tables, figures or sequence listing,may be used to describe a length over which percentage identity may be measured.[0056] The term "agent" encompasses any chemical, biochemical, or biological molecule; such as small molecules,proteins, polypeptides, antibodies, nucleic acid molecules including DNA or RNA, and the like.Methods and compositions related to the inventive hEbola [0057] The present invention is based upon the isolation andidentification of a new human Ebola virus species, EboBun and the sequencing of the only other known West AfricanEbola species EboIC. EboBun was isolated from the patients suffering from hemorrhagic fever in a recent outbreak inUganda. The isolated virus is a member of the Filoviridae family, a family of negative sense RNA viruses. Accordingly, theinvention relates to the isolated EboBun or EBOIC virus that morphologically and phylogenetically relates to knownmembers filoviridae.[0058] In another aspect, the invention provides an isolated hEbola virus including a nucleic acid molecule with anucleotide sequence that is preferably: a) a nucleotide sequence set forth in SEQ ID NO: 1; b) a nucleotide sequence thathybridizes to the sequence set forth in SEQ ID NO: 1 under stringent conditions; or c) a nucleotide sequence that has atleast 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98%, or 99% identity to the SEQ ID NO: 1. In one embodiment of thepresent invention, the hEbola virus is killed. In another, the virus is attenuated. In another, the infectivity of the attenuatedhEbola virus is reduced. In another, the infectivity is reduced by at least 5-fold, 10-fold, 25-fold, 50-fold, 100-fold, 250-fold,500-fold, or 10,000-fold. In another, the replication ability of the attenuated hEbola virus is reduced. In another, thereplication ability of the attenuated virus is educed by at least 5-fold, 10-fold, 25-fold, 50-fold, 100-fold, 250-fold, 500-fold,1,000-fold, or 10,000-fold. In another, the protein synthesis ability of the attenuated virus is reduced. In another, the proteinsynthesis ability is reduced by at least 5-fold, 10-fold, 25-fold, 50-fold, 100-fold, 250-fold, 500-fold, 1,000-fold, or 10,000-fold. In another, the assembling ability of the attenuated hEbola virus is reduced. In another, the assembling ability of theattenuated virus is reduced by at least 5-fold, 10-fold, 25-fold, 50-fold, 100-fold, 250-fold, 500-fold, 1,000-fold, or 10,000-fold. In another, the cytopathic effect of the attenuated hEbola virus is reduced. In another, the cytopathic effect is reducedby at least 5-fold, 10-fold, 25-fold, 50-fold, 100-fold, 250-fold, 500-fold, 1,000-fold, or 10,000-fold.[0059] In another aspect, the invention provides the complete genomic sequence of the hEbola virus EboBun or EboIC. Ina specific embodiment, the virus includes a nucleotide sequence of SEQID NOs: 1 or 10, respectively.[0060] In a related aspect, the invention provides nucleic acid molecules isolated from EboBun, EboIC, or fragmentsthereof. In one embodiment of the present invention, the isolated nucleic acid molecule includes the nucleotide sequenceof SEQ ID NOs: 1 or 10, or a complement thereof. In another, the nucleic acid molecule includes a nucleotide sequencehaving at least 4, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550,600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 4600, 4700, 4800, or 4900contiguous nucleotides of the nucleotide sequence of SEQ ID NO: 1, or a complement thereof;with the proviso that the nucleotide sequence is not comprised by the nucleotide sequence set forth in SEQ ID NO: 2010/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 8/33(Ebola Zaire nucleotide sequence); or at least 5000, 5500, 5600, 5700, 5800, 5900, 6000, 6100, 6200, 6300, 6400, 6500,or 6600 contiguous nucleotides of the nucleotide sequence of SEQ ID NOs: 1 or 10, or a complement thereof. In anotherembodiment, the isolated nucleic acid molecule includes a nucleotide sequence that encodes the EboBun amino acidsequence of SEQ ID NOs: 2-9 or 59, the EboIC amino acid sequence of SEQ ID NOs: 11-19, or a complement of thenucleotide sequence that encodes the EboBun amino acid sequences of SEQID NOs: 2-9 or 59 or the EboIC amino acid sequences of SEQ ID NOs: 11-19. In another, the isolated nucleic acidmolecule hybridizes under stringent conditions to a nucleic acid molecule having the nucleotide sequence of SEQ ID NOs:1 or 10 or a complement thereof, wherein the nucleic acid molecule encodes an amino acid sequence which has abiological activity exhibited by a polypeptide encoded by the nucleotide sequence of SEQ ID NOs: 1 or 10. In another,nucleic acid molecule is RNA. In another, nucleic acid molecule is DNA.[0061] In another aspect, the invention provides proteins or polypeptides that are isolated from the EboBun, including viralproteins isolated from cells infected with the virus but not present in comparable uninfected cells. In one embodiment ofthe present invention, the amino acid sequences of the proteins or polypeptides are set forth in SEQ ID NOs: 2-9, 59, or11-19, or fragments thereof.In one embodiment, polypeptides or proteins of the present invention have a biological activity of the protein (includingantigenicity and/or immunogenicity) encoded by the sequence of SEQ IDNOs: 1 or 10. In another, the polypeptides or the proteins of the present invention have a biological activity of at least oneprotein having the amino acid sequence (including antigenicity and/or immunogenicity) set forth in SEQ ID NOS: 2-9, 59,or 11-19, or a fragment thereof.[0062] In a related aspect, the invention provides an isolated polypeptide encoded by the nucleic acid molecule of theinvention described above. In one embodiment of the present invention, the isolated polypeptide includes the amino acidsequence selected from the group consisting of: a) an amino acid sequence set forth in SEQ ID NO: 2, 3, 4, 5, 6, 7, 8, or9; 11, 12, 13, 14, 15, 16, 17, 18 or 19; and b) an amino acid sequence that has 70%, 75%, 80%, 85%, 90%, 95%, 96%,97%, 98%, or 99% homology to the amino acid sequence according to a). In another, the isolated polypeptide comprisesthe amino acid sequence having at least 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 210, 220, 230,240 or 250 contiguous amino acid residues of the amino acid sequence of SEQ ID NOs: 5 or 18 (VP24); 5, 10, 15, 20, 25,30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 210, 220, 230, 240, 250, 260, 270, 280 contiguous amino acid residuesof the amino acid sequence of SEQ ID NOs: 6 or 17 (VP30); 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150,200, 250, 300, 310, or 320 contiguous amino acid residues of the amino acid sequence of SEQID NOs: 8 or 13 (VP40); 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 310, 320, 330, or340 contiguous amino acid residues of the amino acid sequence of SEQ ID NOs: 7 or 12 (VP35); 5, 10, 15, 20, 25, 30, 35,40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 310, 320, 330, 340, 350, 360, or 370 contiguous amino acid residuesof the amino acid sequence of SEQ IDNOs: 4 or 15 (SGP); 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 310, 320, 330, 340, 350,360, or 370 contiguous amino acid residues of the amino acid sequence of SEQ ID NOs: 59 or 16 (SSGP); 5, 10, 15, 20,25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 450, 500, 550, 600, 610, 620, 630, 640, 650,660, or 670 contiguous amino acid residues of the amino acid sequence of SEQ ID NOs: 9 or 14 (GP); 5, 10, 15, 20, 25,30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 450, 500, 550, 600, 650, 700, 710, 720, or 730contiguous amino acid residues of the amino acid sequence of SEQID NOs: 3 or 11 (NP); or 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 450,500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500,1550, 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950, 2000, 2050, 2100, 2150, 2160, 2170, 2180, 2190, or 2200contiguous amino acid residues of the amino acid sequence of SEQ ID NOs: 2 or 19 (L).[0063] In other aspects, the invention relates to the use of an isolated West African hEbola virus for diagnostic andtherapeutic methods. In one embodiment, the invention provides a method of detecting in a biological sample an antibodyimmunospecific for the hEbola virus using the inventive isolated hEbola virus described herein, or any of the inventiveproteins or polypeptides as described herein. In another specific embodiment, the invention provides a method ofscreening for an antibody which immunospecifically binds and neutralizes hEbola EboBun or EboICor a combination thereof. Such an antibody is useful for a passive immunization or immunotherapy of a subject infectedwith hEbola.[0064] In another aspect, the invention provides an isolated antibody or an antigen-binding fragment thereof whichimmunospecifically binds to a West African genus hEbola virus of the 5 invention described above, and illustrativelyincluding EboBun or EboIC. In one embodiment of the present invention, the isolated antibody or an antigen-bindingfragment thereof neutralizes a West African genus hEbola virus. In another, the isolated antibody or an antigen-bindingfragment thereof immunospecifically binds to the inventive polypeptide described above. The invention further providesantibodies that specifically bind a polypeptide of the invention encoded by the nucleotide 10 sequence of SEQ ID NOs: 1(EboBun) or 10 (EboIC), a fragment thereof, or encoded by a nucleic acid comprising a nucleotide sequence thathybridizes under stringent conditions to the nucleotide sequence of SEQ ID NOs: 1 (EboBun) or 10 (EboIC) and/or anyhEbola EboBun epitope, having one or more biological activities of a polypeptide of the invention. These polypeptides10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 9/33include those shown in SEQ ID NOs: 2-9, 59, and 11-19. Such antibodies include, but are not limited to, 15 polyclonal,monoclonal, bi-specific, multi-specific, human, humanized, chimeric antibodies, single chain antibodies, Fab fragments,F(ab')2 fragments, disulfide-linked Fvs, intrabodies and fragments containing either a VL or VH domain or even acomplementary determining region (CDR) that specifically binds to a polypeptide of the invention.[0065] In other aspects, the invention provides methods for detecting the presence, activity or expression of the hEbolavirus of the invention in a biological material, such as cells, blood, saliva, urine, and so forth. The increased or decreasedactivity or expression of the hEbola virus in a sample relative to a control sample can be determined by contacting thebiological material with an agent which can detect directly or indirectly the presence, activity or expression of the hEbolavirus.In one embodiment of the present invention, the detecting agents are the antibodies or nucleic acid molecules of thepresent invention. Antibodies of the invention can also be used to treat hemorrhagic fever.[0066] In a related aspect, the invention provides a method for detecting the presence of the inventive hEbola virusdescribed above in a biological sample, the method comprising:(a) contacting the sample with an agent that selectively binds to the hEbola virus; and (b) detecting whether the compoundbinds to the hEbola virus in the sample. In one embodiment of the present invention, the biological sample is selected fromthe group consisting of cells; blood; serum; plasma;feces; rectal, vaginal and conjunctival swabs In another, the agent that binds to the virus is an antibody. In another, theagent that binds to the virus is a nucleic acid molecule comprising the nucleotide sequence of SEQ ID NO: 1 or acomplement thereof. In another, the agent that binds to the virus is a nucleic acid molecule comprising a nucleotidesequence having at least 4, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450,500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 4600, 4700, 4800,4900, 5000, 5500, 5600, 5700, 5800, 5900, 6000, 6100, 6200, 6300, 6400, 6500, or 6600 contiguous nucleotides of thenucleotide sequence of SEQ ID NOs: 1 or 10, or a complement thereof.[0067] In another aspect, the invention provides a method for detecting the presence of the inventive polypeptidedescribed above, in a biological sample, the method comprising:(a) contacting the biological sample with an agent that selectively binds to the polypeptide; and (b) detecting whether theagent binds to the polypeptide in the sample. In one embodiment of the present invention, the biological sample isselected from the group consisting of cells; blood; serum;plasma; feces; rectal, vaginal and conjunctival swabs. In another, the agent that binds to the polypeptide is an antibody oran antigen-binding fragment thereof.[0068] In another aspect, the invention provides a method for detecting the presence of a first nucleic acid moleculederived from the inventive hEbola virus described above in a biological sample, the method includes (a) contacting thebiological sample with an agent that selectively binds to the nucleic acid; and (b) detecting whether the agent binds to thenucleotide in the sample. In one embodiment of the present invention, the agent that binds to the first nucleic acidmolecule is a second nucleic acid molecule comprising the nucleotide sequence of SEQ ID NO:1 or a complement thereof. In another, the second nucleic acid molecule comprises at least 4, 5, 10, 15, 20, 25, 30, 35, 40,45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000,1500, 2000, 2500, 3000, 3500, 4000, 4500, 4600, 4700, 4800, 4900, 5000, 5500, 5600, 5700, 5800, 5900, 6000, 6100,6200, 6300, 6400, 6500, or 6600 contiguous nucleotides of the nucleotide sequence of SEQ ID NOs: 1 or 10, or acomplement thereof.[0069] In another aspect, the invention provides a method for propagating the hEbola virus in host cells comprisinginfecting the host cells with an inventive isolated West African hEbola virus described above, culturing the host cells toallow the virus to multiply, and harvesting the resulting virions. Also provided by the present invention are host cellsinfected with the inventive hEbola virus described above. In one embodiment of the present invention, the host cell is aprimate cell.[0070] In another aspect, the invention provides a method of detecting in a biological sample the presence of an antibodythat immunospecifically binds hEbola virus, the method includes: (a) contacting the biological sample with the inventivehost cell described above;and (b) detecting the antibody bound to the cell.[0071] In another aspect, the invention provides vaccine preparations, including the inventive hEbola virus, includingrecombinant and chimeric forms of the virus, nucleic acid molecules comprised by the virus, or protein subunits of thevirus. In one embodiment, the vaccine preparations of the present invention includes live but attenuated hEbola virus withor without pharmaceutically acceptable carriers, including adjuvants. In another, the vaccine preparations of the inventioncomprise an inactivated or killed hEbola EboBun virus, EboICvirus, or a combination thereof, with or without pharmaceutically acceptable carriers, including adjuvants. Such attenuatedor inactivated viruses may be prepared by a series of passages of the virus through the host cells or by preparingrecombinant or chimeric forms of virus. Accordingly, the present invention further provides methods of preparing10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 10/33recombinant or chimeric forms of the inventive hEbola viruses described herein.[0072] In another specific embodiment, the invention provides a vaccine formulation comprising a therapeutically orprophylactically effective amount of the inventive hEbola virus described above, and a pharmaceutically acceptable carrier.In another, the invention provides a vaccine formulation comprising a therapeutically or prophylactically effective amount ofa protein extract of the inventive hEbola virus described above, or a subunit thereof;and a pharmaceutically acceptable carrier. In another aspect, the invention provides a vaccine formulation comprising atherapeutically or prophylactically effective amount of a nucleic acid molecule comprising the nucleotide sequence of SEQID NOs: 1 or 10, or a complement thereof, and a pharmaceutically acceptable carrier. In another, the invention provides avaccine formulation comprising a therapeutically or prophylactically effective amount of a nucleic acid molecule comprisingany of inventive the nucleotide sequences as described above, or a complement thereof, and a pharmaceuticallyacceptable carrier. In another aspect, the invention provides a vaccine formulation comprising a therapeutically orprophylactically effective amount of a protein extract of the inventive hEbola virus described above, or a subunit thereof;and a pharmaceutically acceptable carrier. In another aspect, the invention provides a vaccine formulation comprising atherapeutically or prophylactically effective amount of a nucleic acid molecule comprising the nucleotide sequence of SEQID NOs: 1 or 10, or a complement thereof, and a pharmaceutically acceptable carrier. In another, the invention provides avaccine formulation comprising a therapeutically or prophylactically effective amount of a nucleic acid molecule comprisingany of inventive the nucleotide sequences as described above, or a complement thereof, and a pharmaceuticallyacceptable carrier.[0073] In yet another specific embodiment, the vaccine preparations of the present invention comprise a nucleic acid orfragment of the hEbola virus, e.g., the virus having Accession No.200706291, or nucleic acid molecules having the sequence of SEQ ID NOs: 1 or 10, or a fragment thereof. In another, thevaccine preparations comprise a polypeptide of the invention encoded by the nucleotide sequence of SEQ ID NOs: 1 or 10or a fragment thereof. In a specific embodiment, the vaccine preparations comprise polypeptides of the invention as shownin SEQ IDNOs: 2-9, 59, or 11-19, or encoded by the nucleotide sequence of SEQ ID NOs: 1 or 10, or a fragment thereof.[0074] Furthermore, the present invention provides methods for treating, ameliorating, managing or preventinghemorrhagic fever by administering the vaccine preparations or antibodies of the present invention alone or in combinationwith adjuvants, or other pharmaceutically acceptable excipients. Furthermore, the present invention provides methods fortreating, ameliorating, managing, or preventing hemorrhagic fever by administering the inventive compositions andformulations including the vaccine preparations or antibodies of the present invention alone or in combination withantivirals [e.g., amantadine, rimantadine, gancyclovir, acyclovir, ribavirin, penciclovir, oseltamivir, foscamet zidovudine(AZT), didanosine (ddl), lamivudine (3TC), zalcitabine (ddC), stavudine (d4T), nevirapine, delavirdine, indinavir, ritonavir,vidarabine, nelfinavir, saquinavir, relenza, tamiflu, pleconaril, interferons, etc.], steroids and corticosteroids such asprednisone, cortisone, fluticasone and glucocorticoid, antibiotics, analgesics, bronchodilators, or other treatments forrespiratory and/or viral infections.[0075] In a related aspect, the invention provides an immunogenic formulation comprising an immunogenically effectiveamount of the inventive hEbola virus described above, and a pharmaceutically acceptable carrier.[0076] In another related aspect, the invention provides an immunogenic formulation comprising an immunogenicallyeffective amount of a protein extract of the inventive hEbola virus described above or a subunit thereof, and apharmaceutically acceptable carrier.[0077] In another related aspect, the invention provides an immunogenic formulation comprising an immunogenicallyeffective amount of a nucleic acid molecule comprising the nucleotide sequence of SEQ ID NOs: 1, 10, a combinationthereof, or a complement thereof, and a pharmaceutically acceptable carrier.[0078] In another related aspect, the invention provides an immunogenic formulation comprising an immunogenicallyeffective amount of a nucleic acid molecule comprising the inventive nucleotide sequence as described above or acomplement thereof, and a pharmaceutically acceptable carrier.[0079] In another related aspect, the invention provides an immunogenic formulation comprising an immunogenicallyeffective amount of any of the inventive polypeptides described above.[0080] In another aspect, the present invention provides pharmaceutical compositions comprising antiviral agents of thepresent invention and a pharmaceutically acceptable carrier. In a specific embodiment, the antiviral agent of the inventionis an antibody that immunospecifically binds hEbola virus or any hEbola epitope. In another specific embodiment, theantiviral agent is a polypeptide or protein of the present invention or nucleic acid molecule of the invention.[0081] In a related aspect, the invention provides a pharmaceutical composition comprising a prophylactically ortherapeutically effective amount of an anti-hEbola EboBun agent and a pharmaceutically acceptable carrier. In oneembodiment of the present invention, the anti-hEbola EboBun agent is an antibody or an antigen-binding fragment thereof10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 11/33which immunospecifically binds to the hEbola virus of Deposit Accession No. 200706291, or polypeptides or proteinderived therefrom. In another, the anti-hEbola agent is a nucleic acid molecule comprising the nucleotide sequence ofSEQ ID NOs: 1, 10, a combination thereof, or a fragment thereof.In another, the anti-hEbola agent is a polypeptide encoded by a nucleic acid molecule comprising the nucleotide sequenceof SEQ ID NOs: 1, 10, a combination thereof, or a fragment thereof having a biological activity of the polypeptide.[0082] The invention also provides kits containing compositions and formulations of the present invention. Thus, in anotheraspect, the invention provides a kit comprising a container containing the inventive immunogenic formulation describedabove.[0083] In another aspect, the invention provides a kit includes a container containing the inventive vaccine formulationdescribed above.[0084] In another aspect, the invention provides a kit including a container containing the inventive pharmaceuticalcomposition described above.[0085] In another aspect, the invention provides a kit including a container containing the inventive vaccine formulationdescribed above.[0086] In another aspect, the invention provides a method for identifying a subject infected with the inventive hEbola virusdescribed above, including: (a) obtaining total RNAfrom a biological sample obtained from the subject; (b) reverse transcribing the total RNA to obtain cDNA; and (c)amplifying the cDNA using a set of primers derived from a nucleotide sequence of the inventive 5 hEbola virus describedabove.[0087] In one embodiment of the present invention, the set of primers are derived from the nucleotide sequence of thegenome of the hEbola virus of Deposit Accession No.200706291. In another, the set of primers are derived from the nucleotide sequence of SEQ IDNOs: 1 or 10 or any of the inventive nucleotide sequences as described above, or a complement thereof.10 [0088] The invention further relates to the use of the sequence information of the isolated virus for diagnostic andtherapeutic methods. In a specific embodiment, the invention provides nucleic acid molecules which are suitable for use asprimers consisting of or including the nucleotide sequence of SEQ ID NOs: 1 or 10, or a complement thereof, or at least aportion of the nucleotide sequence thereof. In another specific embodiment, the invention provides nucleic acid molecules15 which are suitable for hybridization to the inventive hEbola nucleic acid;including, but not limited to PCR primers, Reverse Transcriptase primers, probes for Southern analysis or other nucleicacid hybridization analysis for the detection of hEbola nucleic acids, e.g., consisting of or including the nucleotidesequence of SEQ ID NOs: 1, 10 a combination thereof, a complement thereof, or a portion thereof. The invention furtherencompasses chimeric or recombinant viruses encoded in 20 whole or in part by the nucleotide sequences.[0089] In another aspect, the present invention provides methods for screening antiviral agents that inhibit the infectivity orreplication of hEbola virus or variants thereof.[0090] The invention further provides methods of preparing recombinant or chimeric forms of hEbola.[0091] In another aspect, the invention provides vaccine preparations including the hEbola virus, including recombinantand chimeric forms of the virus, or subunits of the virus. The present invention encompasses recombinant or chimericviruses encoded by viral vectors derived from the genome of the inventive hEbola virus described herein or naturalvariants thereof. In a specific embodiment, a recombinant virus is one derived from the hEbola virus of Deposit AccessionNo.200706291. It is recognized that natural variants of the inventive hEbola viruses described herein comprise one or moremutations, including, but not limited to, point mutations, rearrangements, insertions, deletions etc., to the genomicsequence. It is recognized that the mutations may or may not result in a phenotypic change.[0092] In another specific embodiment, a chimeric virus of the invention is a recombinant hEbola EboBun or EboIC viruswhich further comprises a heterologous nucleotide sequence. In accordance with the invention, a chimeric virus may beencoded by a nucleotide sequence in which heterologous nucleotide sequences have been added to the genome or inwhich endogenous or native nucleotide sequences have been replaced with heterologous nucleotide sequences.[0093] According to the present invention, the chimeric viruses are encoded by the viral vectors of the invention whichfurther comprise a heterologous nucleotide sequence. In accordance with the present invention a chimeric virus isencoded by a viral vector that may or may not include nucleic acids that are non-native to the viral genome. In accordancewith the invention a chimeric virus is encoded by a viral vector to which heterologous nucleotide sequences have beenadded, inserted or substituted for native or non-native sequences. In accordance with the present invention, the chimericvirus may be encoded by nucleotide sequences derived from different species or variants of hEbola virus. In particular, thechimeric virus is encoded by nucleotide sequences that encode antigenic polypeptides derived from different species orvariants of hEbola virus.[0094] A chimeric virus may be of particular use for the generation of recombinant vaccines protecting against two or moreviruses (Tao et al., J. Virol. 72, 2955-2961;10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 12/33Durbin et al., 2000, J.Virol. 74, 6821-6831; Skiadopoulos et al., 1998, J. Virol. 72, 1762-1768 (1998); Teng et al., 2000, J.Virol. 74, 9317-9321). For example, it can be envisaged that a virus vector derived from the hEbola virus expressing oneor more proteins of variants of hEbola virus including hEbola EboBun, or vice versa, will protect a subject vaccinated withsuch vector against infections by both the native hEbola and the variant. Attenuated and replication-defective viruses maybe of use for vaccination purposes with live vaccines as has been suggested for other viruses. (See, for example, PCTWO 02/057302, at pp. 6 and 23; and United States Patent Application Publication 2008/0069838 incorporated byreference herein).[0095] In accordance with the present invention the heterologous sequence to be incorporated into the viral vectorsencoding the recombinant or chimeric viruses of the invention include sequences obtained or derived from differentspecies or variants of hEbola.[0096] In certain embodiments, the chimeric or recombinant viruses of the invention are encoded by viral vectors derivedfrom viral genomes wherein one or more sequences, intergenic regions, termini sequences, or portions or entire ORFhave been substituted with a heterologous or non-native sequence. In certain embodiments of the invention, the chimericviruses of the invention are encoded by viral vectors derived from viral genomes wherein one or more heterologoussequences have been inserted or added to the vector.[0097] The selection of the viral vector may depend on the species of the subject that is to be treated or protected from aviral infection. If the subject is human, then an attenuated hEbola virus can be used to provide the antigenic sequences.[0098] In accordance with the present invention, the viral vectors can be engineered to provide antigenic sequences whichconfer protection against infection by the inventive hEbola and natural variants thereof. The viral vectors may beengineered to provide one, two, three or more antigenic sequences. In accordance with the present invention the antigenicsequences may be derived from the same virus, from different species or variants of the same type of virus, or fromdifferent viruses.[0099] The expression products and/or recombinant or chimeric virions obtained in accordance with the invention mayadvantageously be utilized in vaccine formulations. The expression products and chimeric virions of the present inventionmay be engineered to create vaccines against a broad range of pathogens, including viral and bacterial antigens, tumorantigens, allergen antigens, and auto antigens involved in autoimmune disorders. One way to achieve this goal involvesmodifying existing hEbola genes to contain foreign sequences in their respective external domains. Where theheterologous sequences are epitopes or antigens of pathogens, these chimeric viruses may be used to induce a protectiveimmune response against the disease agent from which these determinants are derived. In particular, the chimeric virionsof the present invention may be engineered to create vaccines for the protection of a subject from infections with hEbolavirus and variants thereof.[00100] Thus, the present invention further relates to the use of viral vectors and recombinant or chimeric viruses toformulate vaccines against a broad range of viruses and/or antigens. The present invention also encompassesrecombinant viruses including a viral vector derived from the hEbola or variants thereof which contains sequences whichresult in a virus having a phenotype more suitable for use in vaccine formulations, e.g., attenuated phenotype or enhancedantigenicity. The mutations and modifications can be in coding regions, in intergenic regions and in the leader and trailersequences of the virus.[00101] The invention provides a host cell including a nucleic acid or a vector according to the invention. Plasmid or viralvectors containing the polymerase components of hEbola virus are generated in prokaryotic cells for the expression of thecomponents in relevant cell types (bacteria, insect cells, eukaryotic cells). Plasmid or viral vectors containing full-length orpartial copies of the hEbola genome will be generated in prokaryotic cells for the expression of viral nucleic acids in vitro orin vivo. The latter vectors optionally contain other viral sequences for the generation of chimeric viruses or chimeric virusproteins, optionally lack parts of the viral genome for the generation of replication defective virus, and optionally containmutations, deletions or insertions for the generation of attenuated viruses. In addition, the present invention provides ahost cell infected with hEbola virus of Deposit Accession No. 200706291, [00102] Infectious copies of West African hEbola(being wild type, attenuated, replication-defective or chimeric) are optionally produced upon co-expression of thepolymerase components according to the state-of-the-art technologies described above.[0100] In addition, eukaryotic cells, transiently or stably expressing one or more full-length or partial hEbola proteins areoptionally used. Such cells are preferably made by transfection (proteins or nucleic acid vectors), infection (viral vectors) ortransduction (viral vectors) and are useful for complementation of mentioned wild type, attenuated, replication-defective orchimeric viruses.[0101] The viral vectors and chimeric viruses of the present invention optionally modulate a subject's immune system bystimulating a humoral immune response, a cellular immune response or by stimulating tolerance to an antigen. As usedherein, a subject means:humans, primates, horses, cows, sheep, pigs, goats, dogs, cats, avian species and rodents.Formulation of Vaccines and Antivirals [0102] In a preferred embodiment, the invention provides a proteinaceous moleculeor hEbola virus specific viral protein or functional fragment thereof encoded by a nucleic acid according to the invention.Useful proteinaceous molecules are for example derived from any of the genes or genomic fragments derivable from thevirus according to the invention, preferably the GP, L, NP, sGP, VP24, VP30, VP35, and VP 40 proteins described herein.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 13/33Such molecules, or antigenic fragments thereof, as provided herein, are for example useful in diagnostic methods or kitsand in pharmaceutical compositions such as subunit vaccines. Particularly useful are polypeptides encoded by thenucleotide sequence of SEQ ID NOs: 1 or 10; or antigenic fragments thereof for inclusion as antigen or subunitimmunogen, but inactivated whole virus can also be used.Particularly useful are also those proteinaceous substances that are encoded by recombinant nucleic acid fragments ofthe hEbola genome, of course preferred are those that are within the preferred bounds and metes of ORFs, in particular,for eliciting hEbola specific antibody or T cell responses, whether in vivo (e.g.for protective or therapeutic purposes or for providing diagnostic antibodies) or in vitro (e.g. by phage display technology oranother technique useful for generating synthetic antibodies).[0103] It is recognized that numerous variants, analogues, or homologues of EboBun polypeptides are within the scope ofthe present invention including amino acid substitutions, alterations, modifications, or other amino acid changes thatincrease, decrease, or do not alter the function or immunogenic propensity of the inventive immunogen or vaccine.Several post-translational modifications are similarly envisioned as within the scope of the present invention illustrativelyincluding incorporation of a non-naturally occurring amino acid(s), phosphorylation, glycosylation, sulfation, and addition ofpendent groups such as biotynlation, fluorophores, lumiphores, radioactive groups, antigens, or other molecules.[0104] Methods of expressing and purifying natural or recombinant peptides and proteins are well known in the art.Illustratively, peptides and proteins are recombinantly expressed in eukaryotic cells. Exemplary eukaryotic cells includeyeast, HeLa cells, 293 cells, COS cells, Chinese hamster ovary cells (CHO), and many other cell types known in the art.Both eukaryotic and prokaryotic expression systems and cells are available illustratively from Invitrogen Corp., Carlsbad,CA. It is appreciated that cell-free expression systems are similarly operable.[0105] In a preferred embodiment an immunogenic polypeptide is a full length EboBun protein.Preferably, an immunogen is a full length EboBun protein of SEQ ID NOs: 2-9 or 59, or EboIC SEQID NOs: 11-19, or a fragment thereof as described herein. Preferably, an immunogen is has a minimum of 5 amino acids.As used herein an immunogen is preferably a polypeptide. In the context of an immunogenic polypeptide the termsimmunogen, polypeptide, and antigen are used interchangeably.[0106] Modifications and changes can be made in the structure of the inventive immunogens that are the subject of theapplication and still obtain a molecule having similar or improved characteristics as the wild-type sequence (e.g., aconservative amino acid substitution). For example, certain amino acids are optionally substituted for other amino acids ina sequence without appreciable loss of immunogenic activity. Because it is the interactive capacity and nature of apolypeptide that defines that polypeptide's biological functional activity, certain amino acid sequence substitutions can bemade in a polypeptide sequence and nevertheless obtain a polypeptide with like or improved properties. Optionally, apolypeptide is used that has less or more immunogenic activity compared to the wild-type sequence.[0107] In making such changes, the hydropathic index of amino acids is preferably considered.The importance of the hydropathic amino acid index in conferring interactive biologic function on a polypeptide is generallyunderstood in the art. It is known that certain amino acids can be substituted for other amino acids having a similarhydropathic index or score and still result in a 5 polypeptide with similar biological activity. Each amino acid has beenassigned a hydropathic index on the basis of its hydrophobicity and charge characteristics. Those indices are: isoleucine(+4.5);valine (+4.2); leucine (+3.8); phenylalanine (+2.8); cysteine/cysteine (+2.5);methionine (+1.9);alanine (+1.8); glycine (-0.4); threonine (-0.7); serine (-0.8); tryptophan (-0.9); tyrosine (-1.3);proline (-1.6); histidine (-3.2); glutamate (-3.5); glutamine (-3.5);aspartate (-3.5); asparagine (-3.5);10 lysine (-3.9); and arginine (-4.5).[0108] It is believed that the relative hydropathic character of the amino acid determines the secondary structure of theresultant polypeptide, which in turn defines the interaction of the polypeptide with other molecules, such as enzymes,substrates, receptors, antibodies, antigens, and the like. It is known in the art that an amino acid can be substituted byanother amino acid having a 15 similar hydropathic index and still obtain a functionally equivalent immunogen. In suchchanges, the substitution of amino acids whose hydropathic indices are within 2 is preferred, those within 1 are particularlypreferred, and those within 0.5 are even more particularly preferred.[0109] As outlined above, amino acid substitutions are generally based on the relative similarity of the amino acid sidechainsubstituents, for example, their hydrophobicity, hydrophilicity, charge, 20 size, and the like. Exemplary substitutionsthat take various of the foregoing characteristics into consideration are well known to those of skill in the art and include(original residue: exemplary substitution): (Ala: Gly, Ser), (Arg: Lys), (Asn: Gln, His), (Asp: Glu, Cys, Ser), (Gln: Asn), (Glu:Asp), (Gly: Ala), (His: Asn, Gln), (Ile: Leu, Val), (Leu: Ile, Val), (Lys:Arg), (Met: Leu, Tyr), (Ser:Thr), (Thr: Ser), (Tip: Tyr), (Tyr: Trp, Phe), and (Val: Ile, Leu).Embodiments of this disclosure 25 thus contemplate functional or biological equivalents of a polypeptide and immunogenas set forth above. In particular, embodiments of the polypeptides and immunogens optionally include variants having10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 14/33about 50%, 60%, 70%, 80%, 90%, and 95% sequence identity to the polypeptide of interest.[0110] The invention provides vaccine formulations for the prevention and treatment of infections with hEbola virus. Incertain embodiments, the vaccine of the invention comprises recombinant and chimeric viruses of the hEbola virus. Incertain embodiments, the virus is attenuated.[0111] In another embodiment of this aspect of the invention, inactivated vaccine formulations are prepared usingconventional techniques to "kill" the chimeric viruses.Inactivated vaccines are "dead" in the sense that their infectivity has been destroyed. Ideally, the infectivity of the virus isdestroyed without affecting its immunogenicity. In order to prepare inactivated vaccines, the chimeric virus may be grownin cell culture or in the allantois of the chick embryo, purified by zonal ultracentrifugation, inactivated by formaldehyde or(3-propiolactone, and pooled. The resulting vaccine is usually inoculated intramuscularly or intranasally.[0112] Inactivated viruses are optionally formulated with a suitable adjuvant in order to enhance the immunologicalresponse. Such adjuvants illustratively include but are not limited to mineral gels, e.g., aluminum hydroxide; surface activesubstances such as lysolecithin, pluronic polyols, polyanions; peptides; oil emulsions; and potentially useful humanadjuvants such as BCG and Corynebacterium parvum.[0113] In another aspect, the present invention also provides DNA vaccine formulations including a nucleic acid orfragment of the inventive hEbola virus, e.g., the virus having Accession No. 200706291, or nucleic acid molecules havingthe sequence of SEQ ID NOs: 1 or 10, or a fragment thereof. In another specific embodiment, the DNA vaccineformulations of the present invention comprise a nucleic acid or fragment thereof encoding the antibodies whichimmunospecifically bind hEbola viruses. In DNA vaccine formulations, a vaccine DNA comprises a viral vector, such asthat derived from the hEbola virus, bacterial plasmid, or other expression vector, bearing an insert including a nucleic acidmolecule of the present invention operably linked to one or more control elements, thereby allowing expression of thevaccinating proteins encoded by the nucleic acid molecule in a vaccinated subject. Such vectors can be prepared byrecombinant DNA technology as recombinant or chimeric viral vectors carrying a nucleic acid molecule of the presentinvention.[0114] A nucleic acid as used herein refers to single- or double-stranded molecules which are optionally DNA, includingthe nucleotide bases A, T, C and G, or RNA, including the bases A, U(substitutes for T), C, and G. The nucleic acid may represent a coding strand or its complement.Nucleic acids are optionally identical in sequence to the sequence which is naturally occurring or include alternativecodons which encode the same amino acid as that which is found in the naturally occurring sequence. Furthermore,nucleic acids optionally include codons which represent conservative substitutions of amino acids as are well known in theart.[0115] As used herein, the term "isolated nucleic acid" means a nucleic acid separated or substantially free from at leastsome of the other components of the naturally occurring organism, for example, the cell structural components commonlyfound associated with nucleic acids in a cellular environment and/or other nucleic acids. The isolation of nucleic acids isillustratively accomplished by techniques such as cell lysis followed by phenol plus chloroform extraction, followed byethanol precipitation of the nucleic acids. The nucleic acids of this invention are illustratively isolated from cells accordingto methods well known in the art for isolating nucleic acids. Alternatively, the nucleic acids of the present invention areoptionally synthesized according to standard protocols well described in the literature for synthesizing nucleic acids.Modifications to the nucleic acids of the invention are also contemplated, provided that the essential structure and functionof the peptide or polypeptide encoded by the nucleic acid are maintained.[0116] The nucleic acid encoding the peptide or polypeptide of this invention is optionally part of a recombinant nucleicacid construct comprising any combination of restriction sites and/or functional elements as are well known in the art whichfacilitate molecular cloning and other recombinant DNA manipulations. Thus, the present invention further provides arecombinant nucleic acid construct including a nucleic acid encoding a polypeptide of this invention.[0117] Generally, it may be more convenient to employ as the recombinant polynucleotide a cDNA version of thepolynucleotide. It is believed that the use of a cDNAversion will provide advantages in that the size of the gene will generally be much smaller and more readily employed totransfect the targeted cell than will a genomic gene, which will typically be up to an order of magnitude larger than thecDNA gene. However, the inventor does not exclude the possibility of employing a genomic version of a particular genewhere desired.[0118] As used herein, the terms "engineered" and "recombinant" cells are synonymous with "host" cells and are intendedto refer to a cell into which an exogenous DNAsegment or gene, such as a cDNA or gene has been introduced. Therefore, engineered cells are distinguishable fromnaturally occurring cells which do not contain a recombinantly introduced exogenous DNA segment or gene. A host cell isoptionally a naturally occurring cell that is transformed with an exogenous DNA segment or gene or a cell that is notmodified. A host cell preferably does not possess a naturally occurring gene encoding RSV G protein. Engineered cellsare, thus, cells having a gene or genes introduced through the hand of man. Recombinant cells illustratively include thosehaving an introduced cDNA or genomic DNA, and also include genes positioned adjacent to a promoter not naturallyassociated with the particular introduced gene.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 15/33[0119] To express a recombinant encoded polypeptide in accordance with the present invention one optionally preparesan expression vector that comprises a polynucleotide under the control of one or more promoters. To bring a codingsequence "under the control of' a promoter, one positions the 5' end of the translational initiation site of the reading framegenerally between about 1 and 50 nucleotides "downstream" of (i.e., 3' of) the chosen promoter. The "upstream"promoter stimulates transcription of the inserted DNA and promotes expression of the encoded recombinant protein.This is the meaning of "recombinant expression" in the context used here.[0120] Many standard techniques are available to construct expression vectors containing the appropriate nucleic acidsand transcriptional/translational control sequences in order to achieve protein or peptide expression in a variety of hostexpressionsystems. Cell types available for expression include, but are not limited to, bacteria, such as E. coli and B.subtilis transformed with recombinant phage DNA, plasmid DNA or cosmid DNA expression vectors.[0121] Certain examples of prokaryotic hosts illustratively include E. coli strain RR1, E. coli LE392, E. coli B, E. coli 1776(ATCC No. 31537) as well as E. coli W3110 (F-, lambda-, prototrophic, ATCC No. 273325); bacilli such as Bacillus subtilis;and other enterobacteria such as Salmonella typhimurium, Serratia marcescens, and various Pseudomonas species.[0122] In general, plasmid vectors containing replicon and control sequences that are derived from species compatiblewith the host cell are used in connection with these hosts. The vector ordinarily carries a replication site, as well asmarking sequences that are capable of providing phenotypic selection in transformed cells. For example, E. coli is oftentransformed using pBR322, a plasmid derived from an E. coli species. Plasmid pBR322 contains genes for ampicillin andtetracycline resistance and thus provides easy means for identifying transformed cells. The pBR322 plasmid, or othermicrobial plasmid or phage may also contain, or be modified to contain, promoters that can be used by the microbialorganism for expression of its own proteins.[0123] In addition, phage vectors containing replicon and control sequences that are compatible with the hostmicroorganism are optionally used as transforming vectors in connection with these hosts. For example, the phage lambdais optionally utilized in making a recombinant phage vector that can be used to transform host cells, such as E. coli LE392.[0124] Further useful vectors include pIN vectors and pGEX vectors, for use in generating glutathione S-transferase (GST)soluble fusion proteins for later purification and separation or cleavage. Other suitable fusion proteins are those with (3-galactosidase, ubiquitin, or the like.[0125] Promoters that are most commonly used in recombinant DNA construction include the (3-lactamase (penicillinase),lactose and tryptophan (trp) promoter systems.While these are the most commonly used, other microbial promoters have been discovered and utilized, and detailsconcerning their nucleotide sequences have been published, enabling those of skill in the art to ligate them functionallywith plasmid vectors.[0126] For expression in Saccharomyces, the plasmid YRp7, for example, is commonly used.This plasmid contains the trpl gene, which provides a selection marker for a mutant strain of yeast lacking the ability togrow in tryptophan, for example ATCC No. 44076 or PEP4-1. The presence of the trpl lesion as a characteristic of theyeast host cell genome then provides an effective environment for detecting transformation by growth in the absence oftryptophan.[0127] Suitable promoting sequences in yeast vectors illustratively include the promoters for 3-phosphoglycerate kinase orother glycolytic enzymes, such as enolase, glyceraldehyde-3-phosphate dehydrogenase, hexokinase, pyruvatedecarboxylase, phosphofructokinase, glucose-6-phosphate isomerase, 3-phosphoglycerate mutase, pyruvate kinase,triosephosphate isomerase, phosphoglucose isomerase, and glucokinase. In constructing suitable expression plasmids,the termination sequences associated with these genes are also preferably ligated into the expression vector 3' of thesequence desired to be expressed to provide polyadenylation of the mRNA and termination.[0128] Other suitable promoters, which have the additional advantage of transcription controlled by growth conditions,illustratively include the promoter region for alcohol dehydrogenase 2, isocytochrome C, acid phosphatase, degradativeenzymes associated with nitrogen metabolism, and the aforementioned glyceraldehyde-3-phosphate dehydrogenase, andenzymes responsible for maltose and galactose utilization.[0129] In addition to microorganisms, cultures of cells derived from multicellular organisms are also operable as hosts. Inprinciple, any such cell culture is operable, whether from vertebrate or invertebrate culture. In addition to mammalian cells,these include insect cell systems infected with recombinant virus expression vectors (e.g., baculovirus); and plant cellsystems infected with recombinant virus expression vectors (e.g., cauliflower mosaic virus, CaMV;tobacco mosaic virus, TMV) or transformed with recombinant plasmid expression vectors (e.g., Ti plasmid) containing oneor more coding sequences.[0130] In a useful insect system, Autographica californica nuclear polyhedrosis virus (AcNPV) is used as a vector toexpress foreign genes. The virus grows in Spodoptera frugiperda cells. The isolated nucleic acid coding sequences arecloned into non-essential regions (for example the polyhedron gene) of the virus and placed under control of an AcNPVpromoter (for example, the polyhedron promoter). Successful insertion of the coding sequences results in the inactivationof the polyhedron gene and production of non-occluded recombinant virus (i.e., virus lacking the proteinaceous coat codedfor by the polyhedron gene). These recombinant viruses are then used to 5 infect Spodoptera frugiperda cells in which theinserted gene is expressed (e.g., U.S. Patent No.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 16/334,215,051).[0131] Examples of useful mammalian host cell lines include VERO and HeLa cells, Chinese hamster ovary (CHO) celllines, W138, BHK, COS-7, 293, HepG2, NIH3T3, RIN and MDCK cell lines. In addition, a host cell is preferably chosenthat modulates the expression of the inserted 10 sequences, or modifies and processes the gene product in the specificfashion desired. Such modifications (e.g., glycosylation) and processing (e.g., cleavage) of protein products may beimportant for the function of the encoded protein.[0132] Different host cells have characteristic and specific mechanisms for the post-translational processing andmodification of proteins. Appropriate cell lines or host systems are 15 preferably chosen to ensure the correct modificationand processing of the foreign protein expressed.Expression vectors for use in mammalian cells ordinarily include an origin of replication (as necessary), a promoter locatedin front of the gene to be expressed, along with any necessary ribosome binding sites, RNA splice sites, polyadenylationsite, and transcriptional terminator sequences. The origin of replication is preferably provided either by construction of thevector to 20 include an exogenous origin, such as may be derived from SV40 or other viral (e.g., Polyoma, Adeno, VSV,BPV) source, or may be provided by the host cell chromosomal replication mechanism. If the vector is integrated into thehost cell chromosome, the latter is often sufficient.[0133] The promoters are optionally derived from the genome of mammalian cells (e.g., metallothionein promoter) or frommammalian viruses (e.g., the adenovirus late promoter; the 25 vaccinia virus 7.5K promoter). Further, it is also possible,and may be desirable, to utilize promoter or control sequences normally associated with the desired gene sequence,provided such control sequences are compatible with the host cell systems.[0134] A number of viral based expression systems are operable herein, for example, commonly used promoters arederived from polyoma, Adenovirus 2, Adenovirus 5, cytomegalovirus and 30 Simian Virus 40 (SV40). The early and latepromoters of SV40 virus are useful because both are obtained easily from the virus as a fragment which also contains theSV40 viral origin of replication.Smaller or larger SV40 fragments are also operable, particularly when there is included the approximately 250 bpsequence extending from the HindIll site toward the Bgll site located in the viral origin of replication.[0135] In cases where an adenovirus is used as an expression vector, the coding sequences are preferably ligated to anadenovirus transcription/translation control complex, e.g., the late promoter and tripartite leader sequence. This chimericgene is then optionally inserted in the adenovirus genome by in vitro or in vivo recombination. Insertion in a non-essentialregion of the viral genome (e.g., region El or E3) will result in a recombinant virus that is viable and capable of expressingproteins in infected hosts.[0136] Specific initiation signals may also be required for efficient translation of the claimed isolated nucleic acid codingsequences. These signals include the ATGinitiation codon and adjacent sequences. Exogenous translational control signals, including the ATGinitiation codon, may additionally need to be provided. One of ordinary skill in the art would readily be capable ofdetermining this need and providing the necessary signals. It is well known that the initiation codon must be in-frame (orin-phase) with the reading frame of the desired coding sequence to ensure translation of the entire insert. Theseexogenous translational control signals and initiation codons are optionally of a variety of origins, both natural andsynthetic. The efficiency of expression is optionally enhanced by the inclusion of appropriate transcription enhancerelements or transcription terminators.[0137] In eukaryotic expression, one will also typically desire to incorporate into the transcriptional unit an appropriatepolyadenylation site if one was not contained within the original cloned segment. Typically, the poly A addition site isplaced about 30 to 2000 nucleotides "downstream" of the termination site of the protein at a position prior to transcriptiontermination.[0138] For long-term, high-yield production of recombinant proteins, stable expression is preferred. For example, cell linesthat stably express constructs encoding proteins are engineered.Rather than using expression vectors that contain viral origins of replication, host cells are preferably transformed withvectors controlled by appropriate expression control elements (e.g., promoter, enhancer, sequences, transcriptionterminators, polyadenylation sites, etc.), and a selectable marker.Following the introduction of foreign DNA, engineered cells may be allowed to grow for 1-2 days in an enriched medium,and then are switched to a selective medium. The selectable marker in the recombinant plasmid confers resistance to theselection and allows cells to stably integrate the plasmid into their chromosomes and grow to form foci, which in turn canbe cloned and expanded into cell lines.[0139] A number of selection systems are illustratively used, including, but not limited, to the herpes simplex virusthymidine kinase, hypoxanthine-guanine phosphoribosyltransferase and adenine phosphoribosyltransferase genes, in tk-,hgprt- or aprt- cells, respectively. Also, antimetabolite resistance is optionally used as the basis of selection for dhfr, whichconfers resistance to methotrexate; gpt, which confers resistance to mycophenolic acid; neo, which confers resistance tothe aminoglycoside G-418; and hygro, which confers resistance to hygromycin. It is appreciated that numerous otherselection systems are known in the art that are similarly operable in the present invention.[0140] The nucleic acids encoding the peptides and polypeptides of this invention are optionally administered as nucleicacid vaccines. For the purposes of vaccine delivery, a nucleic acid encoding a peptide or polypeptide of this invention is10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 17/33preferably in an expression vector that includes viral nucleic acid including, but not limited to, vaccinia virus, adenovirus,retrovirus and/or adeno-associated virus nucleic acid. The nucleic acid or vector of this invention is optoinally in a liposomeor a delivery vehicle which can be taken up by a cell via receptor-mediated or other type of endocytosis. The nucleic acidvaccines of this invention are preferably in a pharmaceutically acceptable carrier or administered with an adjuvant. Thenucleic acids encoding the peptides and polypeptides of this invention can also be administered to cells in vivo or ex vivo.[0141] It is contemplated that the isolated nucleic acids of the disclosure are optionally "overexpressed", i.e., expressed inincreased levels relative to its natural expression in cells of its indigenous organism, or even relative to the expression ofother proteins in the recombinant host cell. Such overexpression is assessed by a variety of methods illustrativelyincluding radio-labeling and/or protein purification. However, simple and direct methods are preferred, for example, thoseinvolving SDS/PAGE and protein staining or immunoblotting, followed by quantitative analyses, such as densitometricscanning of the resultant gel or blot. A specific increase in the level of the recombinant protein or peptide in comparison tothe level in natural in transfected cells is indicative of overexpression, as is a relative abundance of the specific protein inrelation to the other proteins produced by the host cell and, e.g., visible on a gel.[0142] Various heterologous vectors are described for DNA vaccinations against viral infections. For example, the vectorsdescribed in the following references, incorporated herein by reference, may be used to express hEbola sequencesinstead of the sequences of the viruses or other pathogens described; in particular, vectors described for hepatitis B virus(Michel, M. L. et al., 1995, DAN-mediated immunization to the hepatitis B surface antigen in mice: Aspects of the humoralresponse mimic hepatitis B viral infection in humans, Proc. Natl. Aca. Sci.USA 92:5307-5311;Davis, H. L. et al., 1993, DNA-based immunization induces continuous secretion of hepatitis Bsurface antigen and high levels of circulating antibody, Human Molec. Genetics 2:1847-1851), HIVvirus (Wang, B. et al., 1993, Gene inoculation generates immune responses against human immunodeficiency virus type1, Proc. Natl. Acad. Sci. USA 90:4156-4160; Lu, S.et al., 1996, Simian immunodeficiency virus DNA vaccine trial in Macques, J. Virol. 70:3978-3991; Letvin, N.L. et al., 1997, Potent, protective anti-HIV immune responses generated by bimodal HIV envelope DNA plus proteinvaccination, Proc Natl Acad Sci USA. 94(17):9378-83), and influenza viruses (Robinson, H L et al., 1993, Protectionagainst a lethal influenza virus challenge by immunization with a haemagglutinin-expressing plasmid DNA, Vaccine11:957-960; Ulmer, J. B.et al., Heterologous protection against influenza by injection of DNA encoding a viral protein, Science 259:1745-1749), aswell as bacterial infections, such as tuberculosis (Tascon, R. E. et al., 1996, Vaccination against tuberculosis by DNAinjection, Nature Med. 2:888-892;Huygen, K. et al., 1996, Immunogenicity and protective efficacy of a tuberculosis DNA vaccine, Nature Med., 2:893-898),and parasitic infection, such as malaria (Sedegah, M., 1994, Protection against malaria by immunization with plasmid DNAencoding circumsporozoite protein, Proc. Natl.Acad. Sci. USA91:9866-9870; Doolan, D. L. et al., 1996, Circumventing genetic restriction of protection against malaria with multigeneDNA immunization: CD8+T cell-interferon .delta., and nitric oxide-dependent immunity, J. Exper. Med., 1183:1739-1746).[0143] Many methods are optionally used to introduce the vaccine formulations described above. These include, but arenot limited to, oral, intradermal, intramuscular, intraperitoneal, intravenous, subcutaneous, and intranasal routes.Alternatively, in a preferred embodiment the chimeric virus vaccine formulation is introduced via the natural route ofinfection of the pathogen for which the vaccine is designed. The DNA vaccines of the present invention are optionallyadministered in saline solutions by injections into muscle or skin using a syringe and needle (Wolff J. A. et al., 1990, Directgene transfer into mouse muscle in vivo, Science 247:1465-1468; Raz, E., 1994, Intradermal gene immunization: Thepossible role of DNA uptake in the induction of cellular immunity to viruses, c. Natl. Acd. Sci. USA 91:9519-9523). Anotherway to administer DNAvaccines operable herein is called the "gene gun" method, whereby microscopic gold beads coated with the DNAmolecules of interest is fired into cells (Tang, D. et al., 1992, Genetic immunization is a simple method for eliciting animmune response, Nature 356:152-154). For general reviews of the methods for DNA vaccines, see Robinson, H. L.,1999, DNA vaccines: basic mechanism and immune responses (Review), Int. J. Mol. Med. 4(5):549-555; Barber, B., 1997,Introduction:Emerging vaccine strategies, Seminars in Immunology 9(5):269-270; and Robinson, H. L. et al., 1997, DNA vaccines,Seminars in Immunology 9(5):271-283.Attenuation of hEbola Virus or Variants Thereof [0144] The hEbola virus or variants thereof of the invention are optionallygenetically engineered to exhibit an attenuated phenotype. In particular, the viruses of the invention exhibit an attenuatedphenotype in a subject to which the virus is administered as a vaccine. Attenuation can be achieved by any method knownto a skilled artisan. Without being bound by theory, the attenuated phenotype of the viruses of the invention is caused,e.g., by using a virus that naturally does not replicate well in an intended host species, for example, by reduced replicationof the viral genome, by reduced ability of the virus to infect a host cell, or by reduced ability of the viral proteins toassemble to an infectious viral particle relative to the wild type species of the virus.[0145] The attenuated phenotypes of hEbola virus or variants thereof are optionally tested by any method known to the10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 18/33artisan. A candidate virus, for example, is optionally tested for its ability to infect a host or for the rate of replication in a cellculture system. In certain embodiments, growth curves at different temperatures are used to test the attenuated phenotypeof the virus. For example, an attenuated virus is able to grow at 35 C, but not at 39 C or 40 C. In certain embodiments,different cell lines are used to evaluate the attenuated phenotype of the virus. For example, an attenuated virus may onlybe able to grow in monkey cell lines but not the human cell lines, or the achievable virus titers in different cell lines aredifferent for the attenuated virus. In certain embodiments, viral replication in the respiratory tract of a small animal model,including but not limited to, hamsters, cotton rats, mice and guinea pigs, is used to evaluate the attenuated phenotypes ofthe virus. In other embodiments, the immune response induced by the virus, including but not limited to, the antibody titers(e.g., assayed by plaque reduction neutralization assay or ELISA) is used to evaluate the attenuated phenotypes of thevirus. In a specific embodiment, the plaque reduction neutralization assay or ELISA is carried out at a low dose. In certainembodiments, the ability of the hEbola virus to elicit pathological symptoms in an animal model is tested. A reduced abilityof the virus to elicit pathological symptoms in an animal model system is indicative of its attenuated phenotype. In aspecific embodiment, the candidate viruses are tested in a monkey model for nasal infection, indicated by mucusproduction.[0146] The viruses of the invention are optionally attenuated such that one or more of the functional characteristics of thevirus are impaired. In certain embodiments, attenuation is measured in comparison to the wild type species of the virusfrom which the attenuated virus is derived. In other embodiments, attenuation is determined by comparing the growth of anattenuated virus in 5 different host systems. Thus, for a non-limiting example, hEbola virus or a variant thereof isattenuated when grown in a human host if the growth of the hEbola or variant thereof in the human host is reducedcompared to the non-attenuated hEbola or variant thereof.[0147] In certain embodiments, the attenuated virus of the invention is capable of infecting a host, is capable of replicatingin a host such that infectious viral particles are produced. In 10 comparison to the wild type species, however, theattenuated species grows to lower titers or grows more slowly. Any technique known to the skilled artisan can be used todetermine the growth curve of the attenuated virus and compare it to the growth curve of the wild type virus.[0148] In certain embodiments, the attenuated virus of the invention (e.g., a recombinant or chimeric hEbola) cannotreplicate in human cells as well as the wild type virus (e.g., wild type 15 hEbola) does. However, the attenuated virus canreplicate well in a cell line that lacks interferon functions, such as Vero cells.[0149] In other embodiments, the attenuated virus of the invention is capable of infecting a host, of replicating in the host,and of causing proteins of the virus of the invention to be inserted into the cytoplasmic membrane, but the attenuated virusdoes not cause the host to produce new infectious 20 viral particles. In certain embodiments, the attenuated virus infectsthe host, replicates in the host, and causes viral proteins to be inserted in the cytoplasmic membrane of the host with thesame efficiency as the wild type hEbola. In other embodiments, the ability of the attenuated virus to cause viral proteins tobe inserted into the cytoplasmic membrane into the host cell is reduced compared to the wild type virus. In certainembodiments, the ability of the attenuated hEbola virus to replicate in 25 the host is reduced compared to the wild typevirus. Any technique known to the skilled artisan can be used to determine whether a virus is capable of infecting amammalian cell, of replicating within the host, and of causing viral proteins to be inserted into the cytoplasmic membraneof the host.[0150] In certain embodiments, the attenuated virus of the invention is capable of infecting a host. In contrast to the wildtype hEbola, however, the attenuated hEbola cannot be replicated in the 30 host. In a specific embodiment, the attenuatedhEbola virus can infect a host and can cause the host to insert viral proteins in its cytoplasmic membranes, but theattenuated virus is incapable of being replicated in the host. Any method known to the skilled artisan can be used to testwhether the attenuated hEbola has infected the host and has caused the host to insert viral proteins in its cytoplasmicmembranes.[0151] In certain embodiments, the ability of the attenuated virus to infect a host is reduced compared to the ability of thewild type virus to infect the same host. Any technique known to the skilled artisan can be used to determine whether avirus is capable of infecting a host.[0152] In certain embodiments, mutations (e.g., missense mutations) are introduced into the genome of the virus, forexample, into the sequence of SEQ ID NOs: 1 or 10, or to generate a virus with an attenuated phenotype. Mutations (e.g.,missense mutations) can be introduced into the structural genes and/or regulatory genes of the hEbola. Mutations areoptionally additions, substitutions, deletions, or combinations thereof. Such variant of hEbola can be screened for apredicted functionality, such as infectivity, replication ability, protein synthesis ability, assembling ability, as well ascytopathic effect in cell cultures. In a specific embodiment, the missense mutation is a cold-sensitive mutation. In anotherembodiment, the missense mutation is a heat-sensitive mutation. In another embodiment, the missense mutation preventsa normal processing or cleavage of the viral proteins.[0153] In other embodiments, deletions are introduced into the genome of the hEbola virus, which result in the attenuationof the virus.[0154] In certain embodiments, attenuation of the virus is achieved by replacing a gene of the wild type virus with a geneof a virus of a different species, of a different subgroup, or of a different variant. In another aspect, attenuation of the virusis achieved by replacing one or more specific domains of a protein of the wild type virus with domains derived from thecorresponding protein of a virus of a different species. In certain other embodiments, attenuation of the virus is achieved10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 19/33by deleting one or more specific domains of a protein of the wild type virus.[0155] When a live attenuated vaccine is used, its safety should also be considered. The vaccine preferably does notcause disease. Any techniques known in the art for improving vaccine safety are operable in the present invention. Inaddition to attenuation techniques, other techniques are optionally be used. One non-limiting example is to use a solubleheterologous gene that cannot be incorporated into the virion membrane. For example, a single copy of the solubleversion of a viral transmembrane protein lacking the transmembrane and cytosolic domains thereof is used.[0156] Various assays are optionally used to test the safety of a vaccine. For example, sucrose gradients andneutralization assays are used to test the safety. A sucrose gradient assay is optionally used to determine whether aheterologous protein is inserted in a virion. If the heterologous protein is inserted in the virion, the virion is preferablytested for its ability to cause symptoms in an appropriate animal model since the virus may have acquired new, possiblypathological, properties.5.4 Adjuvants and Carrier Molecules [0157] hEbola-associated antigens are administered with one or more adjuvants.In one embodiment, the hEbola-associated antigen is administered together with a mineral salt adjuvants or mineral saltgel adjuvant. Such mineral salt and mineral salt gel adjuvants include, but are not limited to, aluminum hydroxide(ALHYDROGEL, REHYDRAGEL), aluminum phosphate gel, aluminum hydroxyphosphate (ADJU-PHOS), and calciumphosphate.[0158] In another embodiment, hEbola-associated antigen is administered with an immunostimulatory adjuvant. Suchclass of adjuvants include, but are not limited to, cytokines (e.g., interleukin-2, interleukin-7, interleukin-12, granulocytemacrophagecolony stimulating factor (GM-CSF), interferon-y interleukin-1(3 (IL-1 (3), and IL-1 0 peptide or SclavoPeptide), cytokine-containing liposomes, triterpenoid glycosides or saponins (e.g., QuilA and QS-21, also sold under thetrademark STIMULON, ISCOPREP), Muramyl Dipeptide (MDP) derivatives, such as N-acetyl-muramyl-L-threonyl-Disoglutamine(Threonyl-MDP, sold under the trademark TERMURTIDE), GMDP, N-acetyl-nor-muramyl-L-alanyl-Disoglutamine,N-acetylmuramyl-L-alanyl-D-isoglutaminyl-L-alanine-2-(1'-2'-dipalmitoyl-s- n-glycero-3-hydroxyphosphoryloxy)-ethylamine, muramyl tripeptide phosphatidylethanolamine (MTP-PE), unmethylated CpGdinucleotides and oligonucleotides, such as bacterial DNA and fragments thereof, LPS, monophosphoryl Lipid A (3D-MLAsold under the trademark MPL), and polyphosphazenes.[0159] In another embodiment, the adjuvant used is a particular adjuvant, including, but not limited to, emulsions, e.g.,Freund's Complete Adjuvant, Freund's Incomplete Adjuvant, squalene or squalane oil-in-water adjuvant formulations, suchas SAF and MF59, e.g., prepared with block-copolymers, such as L-121 (polyoxypropylene/polyoxyetheylene) sold underthe trademark PLURONIC L-121, Liposomes, Virosomes, cochleates, and immune stimulating complex, which is soldunder the trademark ISCOM.[0160] In another embodiment, a microparticular adjuvant is used.Microparticular adjuvants include, but are not limited to, biodegradable and biocompatible polyesters, homo- andcopolymers of lactic acid (PLA) and glycolic acid (PGA), poly(lactide-co-glycolides) (PLGA) microparticles, polymers thatself-associate into particulates (poloxamer particles), soluble polymers (polyphosphazenes), and virus-like particles (VLPs)such as recombinant protein particulates, e.g., hepatitis B surface antigen (HbsAg).[0161] Yet another class of adjuvants that are optionally used include mucosal adjuvants, including but not limited to heatlabileenterotoxin from Escherichia coli (LT), cholera holotoxin (CT) and cholera Toxin B Subunit (CTB) from Vibriocholerae, mutant toxins (e.g., LTK63 and LTR72), microparticles, and polymerized liposomes.[0162] In other embodiments, any of the above classes of adjuvants are optionally used in combination with each other orwith other adjuvants. For example, non-limiting examples of combination adjuvant preparations used to administer thehEbola-associated antigens of the invention include liposomes containing immunostimulatory protein, cytokines, T-celland/or B-cell peptides, or microbes with or without entrapped IL-2 or microparticles containing enterotoxin.Other adjuvants known in the art are also included within the scope of the invention (see Vaccine Design: The Subunit andAdjuvant Approach, Chap. 7, Michael F. Powell and Mark J. Newman (eds.), Plenum Press, New York, 1995, which isincorporated herein in its entirety).[0163] The effectiveness of an adjuvant is illustratively determined by measuring the induction of antibodies directedagainst an immunogenic polypeptide containing a hEbola polypeptide epitope, the antibodies resulting from administrationof this polypeptide in vaccines which are also comprised of the various adjuvants.[0164] The polypeptides are optionally formulated into the vaccine as neutral or salt forms.Pharmaceutically acceptable salts include the acid additional salts (formed with free amino groups of the peptide) andwhich are formed with inorganic acids, such as, for example, hydrochloric or phosphoric acids, or organic acids such asacetic, oxalic, tartaric, maleic, and the like. Salts formed with free carboxyl groups are optionally derived from inorganicbases, such as, for example, sodium potassium, ammonium, calcium, or ferric hydroxides, and such organic bases asisopropylamine, trimethylamine, 2-ethylamino ethanol, histidine, procaine and the like.[0165] The vaccines of the invention are preferably multivalent or univalent.Multivalent vaccines are made from recombinant viruses that direct the expression of more than one antigen.[0166] Many methods are operable herein to introduce the vaccine formulations of the invention; these include but are notlimited to oral, intradermal, intramuscular, intraperitoneal, intravenous, subcutaneous, intranasal routes, and viascarification (scratching through the top layers of skin, e.g., using a bifurcated needle).10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 20/33[0167] The patient to which the vaccine is administered is preferably a mammal, most preferably a human, but is alsooptionally a non-human animal including but not limited to lower primates, cows, horses, sheep, pigs, fowl (e.g., chickens),goats, cats, dogs, hamsters, mice and rats.Preparation of Antibodies [0168] Antibodies that specifically recognize a polypeptide of the invention, such as, but notlimited to, polypeptides including the sequence of SEQ ID NOs: 2-9, 59, or 11-19 and other polypeptides as describedherein, or hEbola epitope or antigen-binding fragments thereof are used in a preferred embodiment for detecting,screening, and isolating the polypeptide of the invention or fragments thereof, or similar sequences that might encodesimilar enzymes from the other organisms. For example, in one specific embodiment, an antibody whichimmunospecifically binds hEbola epitope, or a fragment thereof, is used for various in vitro detection assays, includingenzyme-linked immunosorbent assays (ELISA), radioimmunoassays, western blot, etc., for the detection of a polypeptideof the invention or, preferably, hEbola, in samples, for example, a biological material, including cells, cell culture media(e.g., bacterial cell culture media, mammalian cell culture media, insect cell culture media, yeast cell culture media, etc.),blood, plasma, serum, tissues, sputum, naseopharyngeal aspirates, etc.[0169] Antibodies specific for a polypeptide of the invention or any epitope of hEbola are optionally generated by anysuitable method known in the art. Polyclonal antibodies to an antigen of interest, for example, the hEbola virus fromDeposit Accession No. 200706291, or including a nucleotide sequence of SEQ ID NOs: 1 or 10, are optionally producedby various procedures well known in the art. For example, an antigen is optionally administered to various host animalsincluding, but not limited to, rabbits, mice, rats, etc., to induce the production of antisera containing polyclonal antibodiesspecific for the antigen. Various adjuvants are optionally used to increase the immunological response, depending on thehost species, and include but are not limited to, Freund's (complete and incomplete) adjuvant, mineral gels such asaluminum hydroxide, surface active substances such as lysolecithin, pluronic polyols, polyanions, peptides, oil emulsions,keyhole limpet hemocyanins, dinitrophenol, and potentially useful adjuvants for humans such as BCG (Bacille Calmette-Guerin) and Corynebacterium parvum. Such adjuvants are also well known in the art.[0170] Monoclonal antibodies are optionally prepared using a wide variety of techniques known in the art including the useof hybridoma, recombinant, and phage display technologies, or a combination thereof. In one example, monoclonalantibodies are produced using hybridoma techniques including those known in the art and taught, for example, in Harlowet al., Antibodies: ALaboratory Manual (Cold Spring Harbor Laboratory Press, 2nd ed. 1988);Hammerling, et al., in:Monoclonal Antibodies and T-Cell Hybridomas, pp. 563-681 (Elsevier, N.Y., 1981) (both of which are incorporated byreference in their entireties). The term "monoclonal antibody" as used herein is not limited to antibodies produced throughhybridoma technology. The term "monoclonal antibody"refers to an antibody that is derived from a single clone, including any eukaryotic, prokaryotic, or phage clone, and not themethod by which it is produced.5 [0171] Methods for producing and screening for specific antibodies using hybridoma technology are routine and wellknown in the art. In a non-limiting example, mice are immunized with an antigen of interest or a cell expressing such anantigen. Once an immune response is detected, e.g., antibodies specific for the antigen are detected in the mouse serum,the mouse spleen is harvested and splenocytes isolated. The splenocytes are then fused by well known techniques to 10any suitable myeloma cells. Hybridomas are selected and cloned by limiting dilution. The hybridoma clones are thenassayed by methods known in the art for cells that secrete antibodies capable of binding the antigen. Ascites fluid, whichgenerally contains high levels of antibodies, is optionally generated by inoculating mice intraperitoneally with positivehybridoma clones.[0172] Antibody fragments which recognize specific epitopes are optionally generated by 15 known techniques. Forexample, Fab and F(ab')2 fragments are illustratively produced by proteolytic cleavage of immunoglobulin molecules,using enzymes such as papain (to produce Fab fragments) or pepsin (to produce F(ab')2 fragments). F(ab')2 fragmentspreferably contain the complete light chain, and the variable region, the CH1 region and the hinge region of the heavychain.[0173] The antibodies of the invention or fragments thereof are optionally produced by any 20 method known in the art forthe synthesis of antibodies, in particular, by chemical synthesis or preferably, by recombinant expression techniques.[0174] The nucleotide sequence encoding an antibody is obtained from any information available to those skilled in the art(i.e., from Genbank, the literature, or by routine cloning and sequence analysis). If a clone containing a nucleic acidencoding a particular antibody or an epitope-25 binding fragment thereof is not available, but the sequence of the antibodymolecule or epitope-binding fragment thereof is known, a nucleic acid encoding the immunoglobulin may be chemicallysynthesized or obtained from a suitable source (e.g., an antibody cDNAlibrary, or a cDNA library generated from, or nucleic acid, preferably poly A+RNA, isolated from any tissue or cellsexpressing the antibody, such as hybridoma cells selected to express an antibody) by PCRamplification using 30 synthetic primers hybridizable to the 3' and 5' ends of the sequence or by cloning using anoligonucleotide probe specific for the particular gene sequence to identify, e.g., a cDNA clone from a cDNA library thatencodes the antibody. Amplified nucleic acids generated by PCR are optionally then cloned into replicable cloning vectorsusing any method known in the art.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 21/33[0175] Once the nucleotide sequence of the antibody is determined, the nucleotide sequence of the antibody is optionallymanipulated using methods well known in the art for the manipulation of nucleotide sequences, e.g., recombinant DNAtechniques, site directed mutagenesis, PCR, etc. (see, for example, the techniques described in Sambrook et al., supra;,and Ausubel et al., eds., 1998, Current Protocols in Molecular Biology, John Wiley & Sons, NY, which are bothincorporated by reference herein in their entireties), to generate antibodies having a different amino acid sequence by, forexample, introducing amino acid substitutions, deletions, and/or insertions into the epitope-binding domain regions of theantibodies or any portion of antibodies which may enhance or reduce biological activities of the antibodies.[0176] Recombinant expression of an antibody requires construction of an expression vector containing a nucleotidesequence that encodes the antibody. Once a nucleotide sequence encoding an antibody molecule or a heavy or lightchain of an antibody, or portion thereof has been obtained, the vector for the production of the antibody molecule isoptionally produced by recombinant DNAtechnology using techniques known in the art as discussed in the previous sections. Methods which are known to thoseskilled in the art are optionally used to construct expression vectors containing antibody coding sequences and appropriatetranscriptional and translational control signals. These methods include, for example, in vitro recombinant DNAtechniques, synthetic techniques, and in vivo genetic recombination. The nucleotide sequence encoding the heavy-chainvariable region, light-chain variable region, both the heavy-chain and light-chain variable regions, an epitope-bindingfragment of the heavy- and/or light-chain variable region, or one or more complementarity determining regions (CDRs) ofan antibody are optionally cloned into such a vector for expression.Thus, prepared expression vector is optionally then introduced into appropriate host cells for the expression of theantibody. Accordingly, the invention includes host cells containing a polynucleotide encoding an antibody specific for thepolypeptides of the invention or fragments thereof.[0177] The host cell is optionally co-transfected with two expression vectors of the invention, the first vector encoding aheavy chain derived polypeptide and the second vector encoding a light chain derived polypeptide. The two vectorsillustratively contain identical selectable markers which enable equal expression of heavy and light chain polypeptides ordifferent selectable markers to ensure maintenance of both plasmids. Alternatively, a single vector is optionally used whichencodes, and is capable of expressing, both heavy and light chain polypeptides. In such situations, the light chain shouldbe placed before the heavy chain to avoid an excess of toxic free heavy chain (Proudfoot, Nature, 322:52, 1986; andKohler, Proc. Natl. Acad. Sci. USA, 77:2 197, 1980). The coding sequences for the heavy and light chains optionallyinclude cDNA or genomic DNA.[0178] In another embodiment, antibodies are generated using various phage display methods known in the art. In phagedisplay methods, functional antibody domains are displayed on the surface of phage particles which carry thepolynucleotide sequences encoding them. In a particular embodiment, such phage is utilized to display antigen bindingdomains, such as Fab and Fv or disulfide-bond stabilized Fv, expressed from a repertoire or combinatorial antibody library(e.g., human or murine). Phage expressing an antigen binding domain that binds the antigen of interest is optionallyselected or identified with antigen, e.g., using labeled antigen or antigen bound or captured to a solid surface or bead.Phages used in these methods are typically filamentous phage, including fd and M13. The antigen binding domains areexpressed as a recombinantly fused protein to either the phage gene III or gene VIII protein. Examples of phage displaymethods that can be used to make the immunoglobulins, or fragments thereof, of the present invention include thosedisclosed in Brinkman et al., J. Immunol. Methods, 182:41-50, 1995; Ames et al., J. Immunol.Methods, 184:177-186, 1995; Kettleborough et al., Eur. J. Immunol., 24:952-958, 1994; Persic et al., Gene, 187:9-18,1997; Burton et al., Advances in Immunology, 57:191-280, 1994;PCT application No. PCT/GB91/01134; PCT publications WO 90/02809; WO 91/10737; WO 92/01047; WO92/18619; WO 93/11236; WO 95/15982; WO 95/20401; and U.S. Pat. Nos. 5,698,426;5,223,409;5,403,484; 5,580,717; 5,427,908; 5,750,753; 5,821,047; 5,571,698; 5,427,908;5,516,637;5,780,225; 5,658,727; 5,733,743 and 5,969,108; each of which is incorporated herein by reference in its entirety.[0179] As described in the above references, after phage selection, the antibody coding regions from the phage isoptionally isolated and used to generate whole antibodies, including human antibodies, or any other desired fragments,and expressed in any desired host, including mammalian cells, insect cells, plant cells, yeast, and bacteria, e.g., asdescribed in detail below. For example, techniques to recombinantly produce Fab, Fab' and F(ab')2 fragments areoptionally employed using methods known in the art such as those disclosed in PCT publication WO92/22324; Mullinax et al., BioTechniques, 12(6):864-869, 1992; and Sawai et al., AJRI, 34:26-34, 1995;and Better et al., Science, 240:1041-1043, 1988 (each of which is incorporated by reference in its entirety). Examples oftechniques operable to produce single-chain Fvs and antibodies include those described in U.S.Pat. Nos. 4,946,778 and 5,258,498; Huston et al., Methods in Enzymology, 203:46-88, 1991; Shu et al., PNAS, 90:7995-7999, 1993; and Skerra et al., Science, 240:1038-1040, 1988.[0180] Once an antibody molecule of the invention has been produced by any methods described above, or otherwiseknown in the art, it is then optionally purified by any method known in the art for purification of an immunoglobulinmolecule, for example, by chromatography (e.g., ion exchange, affinity, particularly by affinity for the specific antigen after10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 22/33Protein A or Protein Gpurification, and sizing column chromatography), centrifligation, differential solubility, or by any other standard technique(s)for the purification of proteins. Further, the antibodies of the present invention or fragments thereof are optionally fused toheterologous polypeptide sequences described herein or otherwise known in the art to facilitate purification. Illustrativeexamples include 6xHis tag, FLAG tag, biotin, avidin, or other system.[0181] For some uses, including in vivo use of antibodies in humans and in vitro detection assays, it is preferable to usechimeric, humanized, or human antibodies. Achimeric antibody is a molecule in which different portions of the antibody are derived from different animal species, suchas antibodies having a variable region derived from a murine monoclonal antibody and a constant region derived from ahuman immunoglobulin. Methods for producing chimeric antibodies are known in the art. See e.g., Morrison, Science,229:1202, 1985; Oi et al., BioTechniques, 4:214 1986; Gillies et al., J. Immunol. Methods, 125:191-202, 1989; U.S. Pat.Nos.5,807,715; 4,816,567;and 4,816,397, which are incorporated herein by reference in their entireties.Humanized antibodies are antibody molecules from non-human species that bind the desired antigen having one or morecomplementarity determining regions (CDRs) from the non-human species and framework regions from a humanimmunoglobulin molecule. Often, framework residues in the human framework regions will be substituted with thecorresponding residue from the CDR donor antibody to alter, preferably improve, antigen binding. These frameworksubstitutions are identified by methods well known in the art, e.g., by modeling of the interactions of the CDR andframework residues to identify framework residues important for antigen binding and sequence comparison to identifyunusual framework residues at particular positions. See, e.g., Queen et al., U.S. Pat. No. 5,585,089;Riechmann et al., Nature, 332:323, 1988, which are incorporated herein by reference in their entireties. Antibodies arehumanized using a variety of techniques known in the art including, for example, CDR-grafting (EP 239,400; PCTpublication WO 91/09967; U.S. Pat. Nos.5,225,539;5,530,101 and 5,585,089), veneering or resurfacing (EP 592,106; EP 519,596;Padlan, Molecular Immunology, 28(4/5):489-498, 1991; Studnicka et al., Protein Engineering, 7(6):805-814, 1994;Roguska et al., Proc Natl. Acad. Sci. USA, 91:969-973, 1994), and chain shuffling (U.S. Pat. No.5,565,332), all of which are hereby incorporated by reference in their entireties.[0182] Completely human antibodies are particularly desirable for therapeutic treatment of human patients. Humanantibodies are made by a variety of methods known in the art illustratively including phage display methods describedabove using antibody libraries derived from human immunoglobulin sequences. See U.S. Pat. Nos. 4,444,887 and4,716,111; and PCTpublications WO98/46645; WO 98/50433; WO 98/24893; WO 98/16654; WO 96/34096; WO 96/33735; and WO91/10741, each of which is incorporated herein by reference in its entirety.[0183] Human antibodies are also illustratively produced using transgenic mice which are incapable of expressingfunctional endogenous immunoglobulins, but which can express human immunoglobulin genes. For an overview of thistechnology for producing human antibodies, see Lonberg and Huszar, Int. Rev. Immunol., 13:65-93, 1995. For a detaileddiscussion of this technology for producing human antibodies and human monoclonal antibodies and protocols forproducing such antibodies, see, e.g., PCT publications WO 98/24893; WO92/01047; WO 96/34096;WO 96/33735; European Patent No. 0 598 877; U.S. Pat. Nos. 5,413,923;5,625,126; 5,633,425;5,569,825; 5,661,016; 5,545,806; 5,814,318; 5,885,793; 5,916,771; and 5,939,598, which are incorporated by referenceherein in their entireties. In addition, companies such as Abgenix, Inc.(Fremont, Calif.), Medarex (NJ) and Genpharm (San Jose, Calif.) can be engaged to provide human antibodies directedagainst a selected antigen using technology similar to that described above.[0184] Completely human antibodies which recognize a selected epitope are optionally generated using a techniquereferred to as "guided selection." In this approach a selected non-human monoclonal antibody, e.g., a mouse antibody, isused to guide the selection of a completely human antibody recognizing the same epitope. (Jespers et al., Bio/technology,12:899-903, 1988).[0185] Antibodies fused or conjugated to heterologous polypeptides are optionally used in in vitro immunoassays and inpurification methods (e.g., affinity chromatography) known in the art.See e.g., PCT publication No. WO 93/21232; EP 439,095; Naramura et al., Immunol. Lett., 39:91-99, 1994; U.S. Pat. No.5,474,981; Gillies et al., PNAS, 89:1428-1432, 1992;and Fell et al., J.Immunol., 146:2446-2452, 1991, which are incorporated herein by reference in their entireties.[0186] Antibodies may also be illustratively attached to solid supports, which are particularly useful for immunoassays orpurification of the polypeptides of the invention or fragments, derivatives, analogs, or variants thereof, or similar molecules10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 23/33having the similar enzymatic activities as the polypeptide of the invention. Such solid supports include, but are not limitedto, glass, cellulose, polyacrylamide, nylon, polystyrene, polyvinyl chloride or polypropylene.Pharmaceutical Compositions and Kits 5 [0187] The present invention encompasses pharmaceutical compositionsincluding antiviral agents of the present invention. In a specific embodiment, the antiviral agent is preferably an antibodywhich immunospecifically binds and neutralizes the hEbola virus or variants thereof, or any proteins derived therefrom. Inanother specific embodiment, the antiviral agent is a polypeptide or nucleic acid molecule of the invention. Thepharmaceutical compositions have utility as an 10 antiviral prophylactic agent are illustratively administered to a subjectwhere the subject has been exposed or is expected to be exposed to a virus.[0188] Various delivery systems are known and operable to administer the pharmaceutical composition of the invention,illustratively, encapsulation in liposomes, microparticles, microcapsules, recombinant cells capable of expressing themutant viruses, and receptor mediated 15 endocytosis (see, e.g., Wu and Wu, 1987, J. Biol. Chem. 262:4429 4432).Methods of introduction include but are not limited to intradermal, intramuscular, intraperitoneal, intravenous,subcutaneous, intranasal, epidural, and oral routes. The compounds may be administered by any convenient route, forexample by infusion or bolus injection, by absorption through epithelial or mucocutaneous linings (e.g., oral mucosa, rectaland intestinal mucosa, etc.) and optionally administered together 20 with other biologically active agents. Administration issystemic or local.In a preferred embodiment, it is desirable to introduce the pharmaceutical compositions of the invention into the lungs byany suitable route. Pulmonary administration can also be employed, e.g., by use of an inhaler or nebulizer, and formulationwith an aerosolizing agent.[0189] In a specific embodiment, it is desirable to administer the pharmaceutical compositions 25 of the invention locally tothe area in need of treatment. This administration may be achieved by, for example, and not by way of limitation, localinfusion during surgery, topical application, e.g., in conjunction with a wound dressing after surgery, by injection, by meansof a catheter, by means of a suppository, by means of nasal spray, or by means of an implant, the implant being of aporous, non-porous, or gelatinous material, including membranes, such as sialastic membranes, or fibers. In one 30embodiment, administration can be by direct injection at the site (or former site) infected tissues.[0190] In another embodiment, the pharmaceutical composition is delivered in a vesicle, in particular a liposome (seeLanger, 1990, Science 249:1527-1533; Treat et al., in Liposomes in the Therapy of Infectious Disease and Cancer, LopezBerestein and Fidler (eds.), Liss, New York, pp.353-365 (1989); Lopez-Berestein, ibid. , pp. 317-327; see generally ibid.).[0191] In yet another embodiment, the pharmaceutical composition is delivered in a controlled release system. In oneembodiment, a pump is used (see Langer, supra; Sefton, 1987, CRC Crit.Ref. Biomed. Eng. 14:201; Buchwald et al., 1980, Surgery 88:507; and Saudek et al., 1989, N. Engl.J. Med. 321:574). In another embodiment, polymeric materials are used (see Medical Applications of Controlled Release,Langer and Wise (eds.), CRC Pres., Boca Raton, Fla.(1974); Controlled Drug Bioavailability, Drug Product Design and Performance, Smolen and Ball (eds.), Wiley, New York(1984); Ranger and Peppas, J. Macromol. Sci. Rev. Macromol. Chem. 23:61 (1983); see also Levy et al., 1985, Science228:190; During et al., 1989, Ann. Neurol. 25:351;Howard et al., 1989, J.Neurosurg. 71:105). In yet another embodiment, a controlled release system is placed in proximity of the composition'starget, i.e., the lung, thus, requiring only a fraction of the systemic dose (see, e.g., Goodson, in Medical Applications ofControlled Release, supra, vol. 2, pp. 115-138 (1984)).[0192] Other controlled release systems are discussed in the review by Langer (Science 249:1527-1533 (1990)) thecontents of which are incorporated herein by reference.[0193] The pharmaceutical compositions of the present invention illustratively include a therapeutically effective amount ofa live attenuated, inactivated or killed West African hEbola virus, or recombinant or chimeric hEbola virus, and apharmaceutically acceptable carrier. In a specific embodiment, the term "pharmaceutically acceptable" means approved bya regulatory agency of the Federal or a state government or listed in the U.S. Pharmacopeia or other generally recognizedpharmacopeia for use in animals, and more particularly in humans.The term "carrier"refers to a diluent, adjuvant, excipient, or vehicle with which the pharmaceutical composition is administered. Suchpharmaceutical carriers are illustratively sterile liquids, such as water and oils, including those of petroleum, animal,vegetable or synthetic origin, such as peanut oil, soybean oil, mineral oil, sesame oil and the like. Water is a preferredcarrier when the pharmaceutical composition is administered intravenously. Saline solutions and aqueous dextrose andglycerol solutions are optionally employed as liquid carriers, particularly for injectable solutions. Suitable pharmaceuticalexcipients include starch, glucose, lactose, sucrose, gelatin, malt, rice, flour, chalk, silica gel, sodium stearate, glycerolmonostearate, talc, sodium chloride, dried skim milk, glycerol, propylene, glycol, water, ethanol and the like. Thecomposition, if desired, also contains wetting or emulsifying agents, or pH buffering agents. These compositions optionallytake the form of solutions, suspensions, emulsion, tablets, pills, capsules, powders, sustained release formulations and thelike. The composition is optionally formulated as a suppository, with traditional binders and carriers such as triglycerides.Oral formulation illustratively includes standard carriers such as pharmaceutical grades of mannitol, lactose, starch,10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 24/33magnesium stearate, sodium saccharine, cellulose, magnesium carbonate, etc. Examples of suitable pharmaceuticalcarriers are described in "Remington's Pharmaceutical Sciences" by E. W. Martin. The formulation should suit the mode ofadministration.[0194] In a preferred embodiment, the composition is formulated in accordance with routine procedures as apharmaceutical composition adapted for intravenous administration to human beings. Typically, compositions forintravenous administration are solutions in sterile isotonic aqueous buffer. The composition also includes an optionalsolubilizing agent and a local anesthetic such as lignocaine to ease pain at the site of the injection. Generally, theingredients are supplied either separately or mixed together in unit dosage form, for example, as a dry lyophilized powderor water-free concentrate in a hermetically sealed container such as an ampoule or sachette indicating the quantity ofactive agent. Where the composition is to be administered by infusion, it can be dispensed with an infusion bottlecontaining sterile pharmaceutical grade water or saline. Where the composition is administered by injection, an ampoule ofsterile water for injection or saline is optionally provided so that the ingredients may be mixed prior to administration.[0195] The pharmaceutical compositions of the invention are illustratively formulated as neutral or salt forms.Pharmaceutically acceptable salts illustratively include those formed with free amino groups such as those derived fromhydrochloric, phosphoric, acetic, oxalic, tartaric acids, etc., and those formed with free carboxyl groups such as thosederived from sodium, potassium, ammonium, calcium, ferric hydroxides, isopropylamine, triethylamine, 2 ethylaminoethanol, histidine, procaine, etc.[0196] The amount of the pharmaceutical composition of the invention which will be effective in the treatment of aparticular disorder or condition will depend on the nature of the disorder or condition, and can be determined by standardclinical techniques. In addition, in vitro assays are optionally employed to help identify optimal dosage ranges. The precisedose to be employed in the formulation will also depend on the route of administration, and the seriousness of the diseaseor disorder, and should be decided according to the judgment of the practitioner and each patient's circumstances.However, suitable dosage ranges for intravenous administration are generally about 20 to 500 micrograms of activecompound per kilogram body weight. Suitable dosage ranges for intranasal administration are generally about 0.01 pg/kgbody weight to 1 mg/kg body weight.Effective doses may be extrapolated from dose response curves derived from in vitro or animal model test systems.[0197] Suppositories generally contain active ingredient in the range of 0.5%to 10% by weight;oral formulations preferably contain 10% to 95% active ingredient.[0198] The invention also provides a pharmaceutical pack or kit including one or more containers filled with one or more ofthe ingredients of the pharmaceutical compositions of the invention. Optionally associated with such container(s) is anotice in the form prescribed by a governmental agency regulating the manufacture, use or sale of pharmaceuticals orbiological products, which notice reflects approval by the agency of manufacture, use or sale for human administration. Ina preferred embodiment, the kit contains an antiviral agent of the invention, e.g., an antibody specific for the polypeptidesencoded by a nucleotide sequence of SEQ ID NOs: 1 or 10, or as shown in SEQ ID NOs: 2-9, 59, or 11-19, or any hEbolaepitope, or a polypeptide or protein of the present invention, or a nucleic acid molecule of the invention, alone or incombination with adjuvants, antivirals, antibiotics, analgesic, bronchodilators, or other pharmaceutically acceptableexcipients.[0199] The present invention further encompasses kits including a container containing a pharmaceutical composition ofthe present invention and instructions for use.Detection Assays [0200] The present invention provides a method for detecting an antibody, which immunospecificallybinds to the hEbola virus, in a biological sample, including for example blood, serum, plasma, saliva, urine, feces, etc.,from a patient suffering from hEbola infection, and/or hemorrhagic fever. In a specific embodiment, the method includingcontacting the sample with the hEbola virus, for example, of Deposit Accession No. 200706291, or having a genomicnucleic acid sequence of SEQ ID NOs: 1 or 10, directly immobilized on a substrate and detecting the virus-bound antibodydirectly or indirectly by a labeled heterologous anti-isotype antibody. In another specific embodiment, the sample iscontacted with a host cell which is infected by the hEbola virus, for example, of Deposit Accession No. 200706291, orhaving a genomic nucleic acid sequence of SEQID NOs: 1 or 10, and the bound antibody is optionally detected by immunofluorescent assay.[0201] An exemplary method for detecting the presence or absence of a polypeptide or nucleic acid of the invention in abiological sample involves obtaining a biological sample from various sources and contacting the sample with a compoundor an agent capable of detecting an epitope or nucleic acid (e.g., mRNA, genomic DNA) of the hEbola virus such that thepresence of the hEbola virus is detected in the sample. A preferred agent for detecting hEbola mRNAor genomic RNA of the invention is a labeled nucleic acid probe capable of hybridizing to mRNAor genomic RNAencoding a polypeptide of the invention. The nucleic acid probe is, for example, a nucleic acid molecule including thenucleotide sequence of SEQ ID NOs: 1 or 10, a complement thereof, or a portion thereof, such as an oligonucleotide of atleast 15, 20, 25, 30, 50, 100, 250, 500, 750, 1000 or more contiguous nucleotides in length and sufficient to specificallyhybridize under stringent conditions to a hEbola mRNA or genomic RNA.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 25/33[0202] As used herein, the term "stringent conditions" describes conditions for hybridization and washing under whichnucleotide sequences having at least 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95%identity to each other typically remain hybridized to each other. Such hybridization conditions are described in, for examplebut not limited to, Current Protocols in Molecular Biology, John Wiley & Sons, N.Y. (1989), 6.3.1 6.3.6.;Basic Methods in Molecular Biology, Elsevier Science Publishing Co., Inc., N.Y. (1986), pp.75 78, and 84 87; andMolecular Cloning, Cold Spring Harbor Laboratory, N.Y. (1982), pp.387 389, and are well known to those skilled in the art.A preferred, non-limiting example of stringent hybridization conditions is hybridization in 6x sodium chloride/sodium citrate(SSC), 0.5% SDS at about 68 C followed by one or more washes in 2xSSC, 0.5% SDS at room temperature. Anotherpreferred, non-limiting example of stringent hybridization conditions is hybridization in 6x SSC at about 45 Cfollowed by one or more washes in 0.2x SSC, 0.1% SDS at 50 to 65 C.[0203] A nucleic acid probe, polynucleotide, oligonucleotide, or other nucleic acid is preferably purified. An "isolated" or"purified" nucleotide sequence is substantially free of cellular material or other contaminating proteins from the cell ortissue source from which the nucleotide is derived, or is substantially free of chemical precursors or other chemicals whenchemically synthesized. The language "substantially free of cellular material" includes preparations of anucleotide/oligonucleotide in which the nucleotide/oligonucleotide is separated from cellular components of the cells fromwhich it is isolated or produced. Thus, a nucleotide/oligonucleotide that is substantially free of cellular material includespreparations of the nucleotide having less than about 30%, 20%, 10%, 5%, 2.5%, or 1%, (by dry weight) of contaminatingmaterial. When nucleotide/oligonucleotide is produced by chemical synthesis, it is preferably substantially free of chemicalprecursors or other chemicals, i.e., it is separated from chemical precursors or other chemicals which are involved in thesynthesis of the protein. Accordingly, such preparations of the nucleotide/oligonucleotide have less than about 30%, 20%,10%, or 5% (by dry weight) of chemical precursors or compounds other than the nucleotide/oligonucleotide of interest.In a preferred embodiment of the present invention, the nucleotide/oligonucleotide is isolated or purified.[0204] In another preferred specific embodiment, the presence of hEbola virus is detected in the 5 sample by a reversetranscription polymerase chain reaction (RT-PCR) using the primers that are constructed based on a partial nucleotidesequence of the genome of hEbola virus, for example, that of Deposit Accession No. 200706291, or having a genomicnucleic acid sequence of SEQ ID NOs: 1 or 10. In a non-limiting specific embodiment, preferred primers to be used in aRT-PCR method are the primers are described in detail herein.10 [0205] In more preferred specific embodiment, the present invention provides a real-time quantitative PCR assay todetect the presence of hEbola virus in a biological sample by subjecting the cDNA obtained by reverse transcription of theextracted total RNA from the sample to PCRreactions using the specific primers described in detail herein, and a fluorescence dye, such as SYBR Green I, whichfluoresces when bound nonspecifically to double-stranded DNA. The 15 fluorescence signals from these reactions arecaptured at the end of extension steps as PCR product is generated over a range of the thermal cycles, thereby allowingthe quantitative determination of the viral load in the sample based on an amplification plot.[0206] A preferred agent for detecting hEbola is an antibody that specifically binds a polypeptide of the invention or anyhEbola epitope, preferably an antibody with a detectable label.20 Antibodies are illustratively polyclonal, or more preferably, monoclonal.An intact antibody, or a fragment thereof (e.g., Fab or F(ab')2) is operable herein.[0207] The term "labeled", with regard to the probe or antibody, is intended to encompass direct labeling of the probe orantibody by coupling (i.e., physically linking) a detectable substance to the probe or antibody, optionally via a linker, aswell as indirect labeling of the probe or antibody by 25 reactivity with another reagent that is directly labeled. Examples ofindirect labeling include detection of a primary antibody using a fluorescently labeled secondary antibody and end-labelingof a DNA probe with biotin such that it is detectable with fluorescently labeled streptavidin. The detection method of theinvention is optionally used to detect mRNA, protein (or any epitope), or genomic RNA in a sample in vitro as well as invivo. Exemplary in vitro techniques for detection of 30 mRNA include northern hybridizations, in situ hybridizations, RTPCR,and RNase protection. In vitro techniques for detection of an epitope of hEbola illustratively include enzyme linkedimmunosorbent assays (ELISAs), western blots, immunoprecipitations and immunofluorescence. In vitro techniques fordetection of genomic RNA include northern hybridizations, RT-PCT, and RNase protection. Furthermore, in vivotechniques for detection of hEbola include introducing into a subject organism a labeled antibody directed against thepolypeptide. In one embodiment, the antibody is labeled with a radioactive marker whose presence and location in thesubject organism is detected by standard imaging techniques, including autoradiography.[0208] In a specific embodiment, the methods further involve obtaining a control sample from a control subject, contactingthe control sample with a compound or agent capable of detecting hEbola, e.g., a polypeptide of the invention or mRNA orgenomic RNA encoding a polypeptide of the invention, such that the presence of hEbola or the polypeptide or mRNA orgenomic RNAencoding the polypeptide is detected in the sample, and comparing the absence of hEbola or the polypeptide or mRNA orgenomic RNA encoding the polypeptide in the control sample with the presence of hEbola, or the polypeptide or mRNA orgenomic DNA encoding the polypeptide in the test sample.[0209] The invention also encompasses kits for detecting the presence of hEbola or a polypeptide or nucleic acid of theinvention in a test sample. The kit illustratively includes a labeled compound or agent capable of detecting hEbola or thepolypeptide or a nucleic acid molecule encoding the polypeptide in a test sample and, in certain embodiments, a means10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 26/33for determining the amount of the polypeptide or mRNA in the sample (e.g., an antibody which binds the polypeptide or anoligonucleotide probe which binds to DNA or mRNA encoding the polypeptide).Kits optionally include instructions for use.[0210] For antibody-based kits, the kit illustratively includes: (1) a first antibody (e.g., attached to a solid support) whichbinds to a polypeptide of the invention or hEbola epitope; and, optionally, (2) a second, different antibody which binds toeither the polypeptide or the first antibody and is preferably conjugated to a detectable agent.[0211] For oligonucleotide-based kits, the kit illustratively includes: (1) an oligonucleotide, e.g., a detectably labeledoligonucleotide, which hybridizes to a nucleic acid sequence encoding a polypeptide of the invention or to a sequencewithin the hEbola genome; or (2) a pair of primers useful for amplifying a nucleic acid molecule containing an hEbolasequence.The kit optionally includes a buffering agent, a preservative, or a protein stabilizing agent.The kit optionally includes components necessary for detecting the detectable agent (e.g., an enzyme or a substrate). Thekit optionally contains a control sample or a series of control samples which can be assayed and compared to the testsample contained. Each component of the kit is usually enclosed within an individual container and all of the variouscontainers are within a single package along with instructions for use.Screening Assays to Identify Antiviral Agents [0212] The invention provides methods for the identification of a compoundthat inhibits the ability of hEbola virus to infect a host or a host cell. In certain embodiments, the invention providesmethods for the identification of a compound that reduces the ability of hEbola virus to replicate in a host or a host cell.Any technique well known to the skilled artisan is illustratively used to screen for a compound useful to abolish or reducethe ability of hEbola virus to infect a host and/or to replicate in a host or a host cell.[0213] In certain embodiments, the invention provides methods for the identification of a compound that inhibits the abilityof hEbola virus to replicate in a mammal or a mammalian cell.More specifically, the invention provides methods for the identification of a compound that inhibits the ability of hEbolavirus to infect a mammal or a mammalian cell. In certain embodiments, the invention provides methods for theidentification of a compound that inhibits the ability of hEbola virus to replicate in a mammalian cell. In a specificembodiment, the mammalian cell is a human cell.[0214] In another embodiment, a cell is contacted with a test compound and infected with the hEbola virus. In certainembodiments, a control culture is infected with the hEbola virus in the absence of a test compound. The cell is optionallycontacted with a test compound before, concurrently with, or subsequent to the infection with the hEbola virus. In aspecific embodiment, the cell is a mammalian cell. In an even more specific embodiment, the cell is a human cell. Incertain embodiments, the cell is incubated with the test compound for at least 1 minute, at least 5 minutes, at least 15minutes, at least 30 minutes, at least 1 hour, at least 2 hours, at least 5 hours, at least 12 hours, or at least 1 day. The titerof the virus is optionally measured at any time during the assay. In certain embodiments, a time course of viral growth inthe culture is determined. If the viral growth is inhibited or reduced in the presence of the test compound, the testcompound is identified as being effective in inhibiting or reducing the growth or infection of the hEbola virus. In a specificembodiment, the compound that inhibits or reduces the growth of the hEbola virus is tested for its ability to inhibit orreduce the growth rate of other viruses to test its specificity for the hEbola virus.[0215] In one embodiment, a test compound is administered to a model animal and the model animal is infected with thehEbola virus. In certain embodiments, a control model animal is infected with the hEbola virus without the administration ofa test compound. The test compound is optionally administered before, concurrently with, or subsequent to the infectionwith the hEbola virus. In a specific embodiment, the model animal is a mammal. In an even more specific embodiment, themodel animal is, but is not limited to, a cotton rat, a mouse, or a monkey. The titer of the virus in the model animal isoptionally measured at any time during the assay. In certain embodiments, a time course of viral growth in the culture isdetermined. If the viral growth is inhibited or reduced in the presence of the test compound, the test compound is identifiedas being effective in inhibiting or reducing the growth or infection of the hEbola virus. In a specific embodiment, thecompound that inhibits or reduces the growth of the hEbola in the model animal is tested for its ability to inhibit or reducethe growth rate of other viruses to test its specificity for the hEbola virus.[0216] According to the method of the invention, a human or an animal is optionally treated for for EboBun or EboIC, otherviral infection or bacterial infection by administering an effective amount of an inventive therapeutic composition.Preferably, a vaccine is administered prophylactically. An "effective amount" is an amount that will induce an immuneresponse in a subject. Illustratively, an effective amount of the compositions of this invention ranges from nanogram/kg tomilligram/kg amounts for young children and adults. Equivalent dosages for lighter or heavier body weights can readily bedetermined. The dose should be adjusted to suit the individual to whom the composition is administered and will vary withage, weight and metabolism of the individual. The exact amount of the composition required will vary from subject tosubject, depending on the species, age, weight and general condition of the subject, the particular peptide or polypeptideused, its mode of administration and the like. An appropriate amount can be determined by one of ordinary skill in the artusing only routine experimentation given the teachings herein. One skilled in the art will realize that dosages are bestoptimized by the practicing physician or veterinarian and methods for determining dose amounts and regimens andpreparing dosage forms are described, for example, in Remington's Pharmaceutical Sciences, (Martin, E. W., ed., latest10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 27/33edition), Mack Publishing Co., Easton, PA. Preferably, a single administration is operable to induce an immune response.[0217] Methods involving conventional biological techniques are described herein. Such techniques are generally known inthe art and are described in detail in methodology treatises such as Molecular Cloning: A Laboratory Manual, 2nd ed., vol.1-3, ed. Sambrook et al., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., 1989; and Current Protocols inMolecular Biology, ed. Ausubel et al., Greene Publishing and Wiley-Interscience, New York, 1992 (with periodic updates).Immunological methods (e.g., preparation of antigen-specific antibodies, immunoprecipitation, and immunoblotting) aredescribed, e.g., in Current Protocols in Immunology, ed. Coligan et al., John Wiley & Sons, New York, 1991; and Methodsof Immunological Analysis, ed. Masseyeff et al., John Wiley & Sons, New York, 1992.[0218] Embodiments of inventive compositions and methods are illustrated in the following detailed examples. Theseexamples are provided for illustrative purposes and are not considered limitations on the scope of inventive compositionsand methods.EXAMPLESExample 1:Newly discovered Ebola virus associated with hemorrhagic fever outbreak in Bundibugyo, Uganda [0219] In lateNovember 2007 HF cases were reported in the townships of Bundibugyo and Kikyo in Bundibugyo District, WesternUganda (Figure 1A). These samples were assayed as described by Towner, JS, et al., PLoS Pathog, 2008 November;4(11): e1000212, the contents of which are incorporated herein by reference for methods, results, reagents, and all otheraspects of the publication. A total of 29 blood samples were initially collected from suspect cases and showed evidence ofacute ebolavirus infection in eight specimens using a broadly reactive ebolavirus antigen capture assay known to crossreactwith the different ebolavirus species and an IgM capture assay based on Zaire ebolavirus reagents (Table 1). Thesespecimens were negative when initially tested with highly sensitive real-time RT-PCR assays specific for all known Zaireand Sudan ebolaviruses and marburgviruses. However, further evidence of acute ebolavirus infection was obtained usinga traditionally less sensitive (relative to the real-time RT-PCR assays) but more broadly reactive filovirus L gene-specificRT-PCR assay (1 specimen) (Table 1). Sequence analysis of the PCRfragment (400 bp of the virus L gene) revealed the reason for the initial failure of the real-time RT-PCR assays, as thesequence was distinct from that of the 4 known species of ebolavirus, although distantly related to Cote d'Ivoire ebolavirus.In total, 9 of 29 specimens showed evidence of ebolavirus infection, and all tests were negative for marburgvirus (data notshown).[0220] Approximately 70% of the virus genome was rapidly sequenced from total RNAextracted from a patient serum (#200706291) using a newly established metagenomics pyrosequencing method (454 LifeSciences) which involves successive rounds of random DNAamplification8. Using the newly derived draft sequence, a real-time RT-PCRassay specific for the 5 NP gene of this virus was quickly developed and evaluated. The assay was shown to haveexcellent sensitivity (Table 1), finding positive all the initial six samples that tested positive by either virus antigen capture(five specimens) or virus isolation assays (four specimens).The antigen-capture, IgM, IgG and newly designed real-time PCR assays were quickly transferred to the Uganda VirusResearch Institute during the course of the outbreak to facilitate rapid identification and isolation of 10 Ebola cases in theaffected area for efficient control of the outbreak. The outbreak continued through late December 2007, and resulted in149 suspected cases and 37 deaths9.[0221] Table 1. Ebolavirus diagnostic results of initial 29 specimens obtained from Bundibugyo District with numericalspecimen numbers assigned. RT-PCR refers to results obtained from conventional PCR using the broadly reactive FiloA/B primers 13. Ag, IgM, and IgG refer to 15 results from ELISA-based assaysio' 11 with Zaire ebolavirus reagents whilevirus isolation refers to culture attempts on Vero E6 cells12. Q-RT-PCR refers to results obtained using the optimizedBundibugyo ebolavirus specific real-time RT-PCR assay with cycle threshold (Ct) values of positive (Pos) samplesindicated in the far right column. * Specimen #200706291 is the clinical sample from which prototype isolate #811250 wasobtained.Table 1 ................................................................................................................................................................................................... .Sample No. RT-PCR Arc Virus Isolation Q RT PCR Ct ......... .........200706288 neg neg neg neg neg neg 40 200706289 neg neg neg neg neg neg 40 200706290....:...... neg......>....neg.......n eg.......n eg._............neg ............................ n eg.....................40.......200706291.......... Pos......:.... Pos.......n eg neg Pos ............................ Pos..................23.64...>200706292..........neg..........!?.eg.......!?...9.......11e9._............!?.eg ............. ..............neg..............10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 28/33.......40.......!?.eg .............. .............. neg..............200706293........... eg...... ....!?.eg.......!?...9........ neg.....................40.......200706294 neg neg neg neg neg neg 40 .......................................................................................................................................... .........................................................200706295 neg neg neg neg neg neg 40 200706296 neg neg Pos Pos neg neg 40 200706297 neg neg Pos Pos neg neg40 200706298 neg Pos Pos Pos neg Pos 34.83 200706299 neg neg Pos Pos neg neg 40 200706300............neg...........neg..... ne..... neg...............neg............................ neg.....................40 200706301 ne. neg ne neg neg ne. 40.................................;...........................................;.......... ..................................................... ...................................200706302 neg Pos Pos neg neg Pos 35.01 ................................:.....................:....................................................................................................................:.....................200706303 neg neg neg neg neg neg 40 200706304 neg neg neg neg Pos Pos 38.18 200706305....:......neg......>....neg.......neg.......ne9 _............neg ............................ neg.....................40.......>200706306..........neg......>....neg.......neg......ne9 _............neg ............................neg.....................40.......200706307..........neg......>....!?eg.......neg......ne9_ _............neg ............................neg.....................40.......200706320.... .......ND.......>....Pos.......neg.......neg. .............Pos Pos 30.24 ......................................... ..:..200706321 ND neg neg neg neg neg 40 .....................................................................................................................................................................................................200706322 ND neg neg neg neg neg 40 200706323 ND neg neg neg neg neg 40 200706324 ND neg neg neg neg neg 40200706325 ND neg neg..... neg...... neg neg ..... 40 200706326 ND neg neg neg neg neg 40 200706327 ND Pos neg negPos Pos 34.41 200706328 ND neg...... neg......neg, neg ne9...... 40 [0222] The entire genome sequence of this virus wascompleted using a classic primer walking sequencing approach on RNA. The complete genome of the Eb ebolavirus wasnot available, so it too was derived by a similar combination of random primed pyrosequencing and primer walkingapproaches. Acquisition of these sequences allowed for the first time the phylogenetic analysis of the complete genomesof representatives of all known species of Ebola and Marburg viruses. The analysis revealed that the newly discoveredvirus differed from the four existing ebolavirus species (Figure 1), with approximately 32% nucleotide difference from eventhe closest relative, EboIC(Table 2). Similar complete genome divergence (35-45%) is seen between the previously characterized ebolavirusspecies.[0223] Table 2. Identity matrix based on comparisons of full-length genome sequences of Zaire ebolaviruses 1976(Genbank accession number NC_002549) and 1995 (Genbank accession number AY354458), Sudan ebolavirus 2000(Genbank accession number NC_006432), Cote d'Ivoire ebolavirus 1994 (SEQ ID NO: 10), Reston ebolavirus 1989(Genbank accession number NC_004161), and Bundibugyo ebolavirus 2007 (SEQ ID NO: 1).Table 2 Zaire `95 Sudan `00 EboIC `94 EboBun `07 Reston `89 Zaire `76 .988 .577 .630 .632 .581 Zaire `95 .577 .631.633 .581 Sudan `00 .577 .577 .609 EboIC `94 .683 .575 EboBun `07 .576 [0224] The material and information obtainedfrom the discovery of the new unique virus EboBun and the realization that together with EboIC these viruses represent aGlade of Bundibungyo-Ivory Coast Ebola virus species is valuable, and makes possible the development of clinical,diagnostic and research tools directed to human hEbola infection.Material and Methods [0225] Ebolavirus detection and virus isolation. Several diagnostic techniques were used for eachsample: (i) antigen capture, IgG, and IgM assays were performed as previously described" (ii) virus isolation attempts wereperformed on Vero E6 cells12 and monitored for 14 days; (iii) RNAwas extracted and tested for Zaire16 and Sudan ebolavirus and marburgvirus4 using real-time quantitative RT-PCRassays designed to detect all known species of each respective virus species the primers/probe for the Sudan ebolavirusassay were EboSudBMG 1(+) 5'-GCC ATGGIT TCA GGTTTG AG-3' (SEQ ID NO: 21), EboSudBMG 1(-) 5'-GGT IAC ATT GGG CAA CAA TTC A-3' (SEQ ID NO: 22) and EbolaSudan BMG Probe 5'FAM-AC GGT GCA CAT TCT CCT TTT CTCGGA-BHQ1 (SEQ ID NO: 23)]; (iv) the conventional RT-PCR was performed with the filo A/Bprimer set as previously described16 using Superscript III (Invitrogen) according to the manufacturer's instructions. Thespecimen 200706291 was selected as the reference sample for further sequence analysis.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 29/33[0226] Genome sequencing. Pyrosequencing was carried out utilizing the approach developed by 454 Life Sciences, andthe method described by Cox-Foster et al. 8 Subsequent virus whole genome primer walking was performed as previouslydescribed17 but using the primers specific for Bundibugyo ebolavirus RT-PCR amplification. In total, the entire virusgenome was amplified in six overlapping RT-PCR fragments (all primers listed 5' to 3'): fragment A(predicted size 2.7 kb) was amplified using forward-GTGAGACAAAGAATCATTCCTG (SEQ ID NO: 24) with reverse-CATCAATTGCTCAGAGATCCACC (SEQ ID NO: 25); fragment B (predicted size 3.0 kb) was amplified using forward-CCAACAACACTGCATGTAAGT (SEQ ID NO: 26) with reverse-AGGTCGCGTTAATCTTCATC (SEQ ID NO: 27); fragmentC (predicted size 3.5 kb) was amplified using forward-GATGGTTGAGTTACTTTCCGG (SEQ ID NO: 28) with reverse-GTCTTGAGTCATCAATGCCC (SEQ ID NO: 29); fragment D (predicted size 3.1 kb) was amplified using forward-CCACCAGCACCAAAGGAC (SEQ ID NO: 30) with reverse-CTATCGGCAATGTAACTATTGG (SEQ ID NO: 31); fragmentE (predicted size 3.4 kb) was amplified using forward-GCCGTTGTAGAGGACACAC (SEQ ID NO: 32) with reverse-CACATTAAATTGTTCTAACATGCAAG (SEQ ID NO: 33) and fragment F (predicted size 3.5 kb) was amplified usingforward-CCTAGGTTATTTAGAAGGGACTA (SEQ ID NO: 34) with reverse-GGT AGA TGT ATT GAC AGC AAT ATC(SEQ ID NO: 35).[0227] The exact 5' and 3' ends of Bundibugyo ebolavirus were determined by 3' RACE from virus RNA extracted fromvirus infected Vero E6 cell monolayers using TriPure isolation reagent.RNAs were then polyadenylated in vitro using A-Plus poly(A) polymerase tailing kit (Epicenter Biotechnologies) followingthe manufacturer's instructions and then purified using an RNeasy kit (Qiagen) following standard protocols. Tenmicroliters of in vitro polyadenylated RNA were added as template in RT--PCR reactions, using SuperScript III One--StepR'I'-PCRsystem with Platinum Tack High Fidelity (Invitrogen) following the manufacturer's protocol. Two parallel RT-PCRreactions using the oligo(dT)-containing 3'RACf-AP primer (Invitrogen) mixed with I of 2 viral specific primers, Ebo-U 692(-)ACAAAAAGCTATCTGCACTAT (SEQ ID NO: 36) and Ebo-U18269(+) CTCAGAAGCAAAATTAATGG (SEQ ID NO: 37),generated -700 nt long fragments containing the 3' ends of either genomic and antigenomic RNAs. The resulting RT-PCRproducts were analyzed by agarose electrophoresis, and DNA bands of the correct sizes were purified using QlAquick GelExtraction Kit (Qiagen) and sequenced using standard protocols (ABI).[0228] The nucleotide sequence of the Cote d'Ivoire ebolavirus (EboIC) isolate RNA was initially determined using theexact same pyrosequencing strategy as that used for Bundibugyo ebolavirus described above. This method generatedsequence for approximately 70% of the entire genome. This draft sequence was then used to design a whole genomeprimer walking strategy for filling any gaps and confirming the initial sequence. The following Cote d'Ivoire ebolavirusspecificprimers were used to generate RT-PCR fragments, designated A-F, as follows: Fragment A(predicted size 3.0 kb) was amplified using forward-GTGTGCGAATAACTATGAGGAAG(SEQID NO: 38) and reverse-GTCTGTGCAATGTTGATGAAGG (SEQ ID NO: 39); Fragment B(predicted size 3.2 kb) was amplified using forward-CATGAAAACCACACTCAACAAC(SEQ IDNO: 40) and reverse-GTTGCCTTAATCTTCATCAAGTTC (SEQ ID NO: 41); Fragment C(predicted size 3.0 kb) was amplified using forward-GGCTATAATGAATTTCCTCCAG(SEQ IDNO: 42) and reverse-CAAGTGTATTTGTGGTCCTAGC (SEQ ID NO: 43); fragment D(predicted size 3.5 kb) was amplified using forward-GCTGGAATAGGAATCACAGG (SEQ ID NO: 44) and reverse-CGGTAGTCTACAGTTCTTTAG (SEQ ID NO: 45); fragment E (predicted size 4.0 kb) was amplified using forward-GACAAAGAGATTAGATTAGCTATAG (SEQ ID NO: 46) and reverse-GTAATGAGAAGGTGTCATTTGG (SEQ ID NO: 47);fragment F (predicted size 2.9 kb) was amplified using forward-CACGACTTAGTTGGACAATTGG (SEQ ID NO: 48) andreverse-CAGACACTAATTAGATCTGGAAG (SEQ ID NO: 49); fragment G (predicted size 1.3 kb) was amplified usingforward-CGGACACACAAAAAGAAWRAA (SEQ ID NO: 50) and reverse-CGTTCTTGACCTTAGCAGTTC (SEQ ID NO:51); and fragment H (predicted size 2.5 kb) was amplified using forward-GCACTATAAGCTCGATGAAGTC (SEQ ID NO:52) and reverse-TGGACACACAAAAARGARAA (SEQ ID NO: 53). A gap in the sequence contig was located betweenfragments C and D and this was resolved using the following primers to generate a predicted fragment of 1.5 kb: forward-CTGAGAGGATCCAGAAGAAAG (SEQ ID NO: 54) and reverse-GTGTAAGCGTTGATATACCTCC (SEQ ID NO: 55). Theterminal -20 nucleotides of the sequence were not experimentally determined but were inferred by comparing with theother known Ebola genome sequences.[0229] Bundibugyo ebolavirus real-time RT-PCR assay. The primers and probe used in the Bundibugyo ebolavirus specificQ-RT-PCR assay were as follows: EboU965( +): 5'-GAGAAAAGGCCTGTCTGGAGAA-3' (SEQ ID NO: 56), EboU1039(-):5'-TCGGGTATTGAATCAGACCTTGTT-3' (SEQ ID NO: 57) and EboU989 Prb: 5'Fam-TTCAACGACAAATCCAAGTGCACGCA-3'BHQ1 (SEQ ID NO 58). Q-RT-PCR reactions were set up using Superscript IIIOne-Step Q-RT-PCR (Invitrogen) according to the manufacturer's instructions and run for 40 cycles with a 58 C annealingtemperature.[0230] Phylogenetic analysis. Modeltest 3.718 was used to examine 56 models of nucleotide substitution to determine themodel most appropriate for the data. The General Time Reversible model incorporating invariant sites and a gamma10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 30/33distribution (GTR+I+G) was selected using the Akaike Information Criterion (AIC). Nucleotide frequencies were A =0.3278, C= 0.2101, G =0.1832, T = 0.2789, the proportion of invariant sites = 0.1412, and the gamma shape parameter =1.0593. A maximum likelihood analysis was subsequently performed in PAUP*4.ObIO19 using the GTR+I+G modelparameters. Bootstrap support values were used to assess topological support and were calculated based on 1,000pseudoreplicates20.[0231] In addition, a Bayesian phylogenetic analysis was conducted in MrBayes 3.221 using the 5 GTR+I+G model ofnucleotide substitution. Two simultaneous analyses, each with four Markov chains, were run for 5,000,000 generationssampling every 100 generations.Prior to termination of the run, the AWTY module was used to assess Markov Chain Monte Carlo convergence to ensurethat the length of the analysis was sufficient22. Trees generated before the stabilization of the likelihood scores werediscarded (burn in = 40), and the remaining trees were used to construct a 10 consensus tree. Nodal support wasassessed by posterior probability values (> 95 = statistical support).Example 2 [0232] Immunization against EboBun:15 [0233] To determine the capability of immunogens to elict an immune response in non-human primates (NHP), 12cynomolgus macaques, of which 10 are immunized with VSVAG/EboBunGPeither orally (OR; n = 4), intranasally (IN; n = 4) or intramuscularly (IM; n = 2) in accordance with all animal control andsafety guidelines and essentially as described by Qiu, X, et al., PLoS ONE. 2009;4(5): e5547. The remaining 2 control animals are vaccinated intramuscularly with 20 VSVAG/MARVGP. VSVAG/MARVGPdoes not provide heterologous protection against EboBun, therefore these NHPs succumb to EboBun infection. Animalsare acclimatized for 14 days prior to infection. Animals are fed and monitored twice daily (pre- and post-infection) and fedcommercial monkey chow, treats and fruit. Husbandry enrichment consists of commercial toys and visual stimulation.25 [0234] The recombinant VSVAG/EboBun vaccines are synthesized expressing the EboBun glycoprotein (GP) (SEQ IDNO: 9), soluble glycoprotein (sGP) (SEQ ID NO: 4), or nucleoprotein (NP) (SEQ ID NO: 3). Control VSVAG/MARVGPvaccines represent the analogous proteins from Lake victoria marburgvirus (MARV) (strain Musoke). The following resultsfor GP are similar for sGP and NP. Vaccines are generated using VSV (Indiana serotype) as described previously.30 Garbutt, M, et al., J Virol, 2004; 78(10):5458-5465; Schnell, MJ, et al., PNAS USA, 1996;93(21):11359-11365. EboBun challenge virus is passaged in Vero E6 cells prior to challenge, as described previouslyJones, SM, et al., Nat Med, 2005; 11(7):786-790;Jahrling, PB, et al., J Infect Dis, 1999; 179(Suppl 1):S224-34. An EboBun immunogen peptide pool consisting of 15merswith 11 amino acid overlaps (Sigma-Genosys) spanning the entire sequence of the EboBun immunogens and strainMayinga 1976 GP are used.[0235] Twelve filovirus naive cynomolgus monkeys randomized into four groups receive 2 ml of lx107 PFU/ml of vaccine inDulbecco's modified Eagle's medium (DMEM).Animals in the three experimental groups are vaccinated with either: 1) 2 ml orally (OR) (n = 4);2) 1 ml dripped into each nostril, intranasally (IN) (n = 4); or 3) 1 ml each into two sites intramuscularly (IM) (n = 2).The two controls are injected intramuscularly with 2 ml of lx107 PFU/ml of VSVAG/MARVGP. All animals are challengedintramuscularly 28 days later with 1,000 PFU of EboBun.[0236] Routine examination is conducted on 0, 2, 4, 6, 10, 14 and 21 days post-vaccination, then 0, 3, 6, 10, 14, 19, 26days, 6 and 9 months after the EboBun challenge.For the examinations animals are anaesthetized by intramuscular injection with 10 mg/kg of ketaset (Ayerst).Examinations include haematological analysis, monitoring temperature (rectal), respiration rate, lymph nodes, weight,hydration, discharges and mucous membranes. Also, swabs (throat, oral, nasal, rectal, vaginal) and blood samples arecollected (4 ml from femoral vein, 1 ml in EDTA vacutainer tube; 3 ml in serum separator vacutainer tube). Cynomolgusmonkey PBMCs are isolated using BDCPT sodium citrate Vacutainers (Becton Dickinson) as per manufacturer's protocol.[0237] All VSVAG/EboBunGP immunized animals are protected from high dose challenge.These animals show no evidence of clinical illness after vaccination or EboBun challenge. Both control animalsdemonstrate typical symptoms associated with EboBun HFincluding fever, macular rashes, lethargy, and unresponsiveness. Continued infection requires euthanization. Hematologyanalyses at each examination date demonstrate increases in the platelet-crit in the OR and IN groups post-challenge,however, no significant changes are observed in any NHPs post-immunization or in the VSVAG/EboBunGP immunizedNHPs post-challenge.[0238] EboBun antibody production from humoral antibody response to vaccination and challenge is examined by a viruslike particle (VLP) based ELISA assay.Generation of EboBun VLPs is performed by the protocol for ZEBOV as described by Wahl-Jensen, V., et al., J Virol,2005; 79(4):2413-2419. ELISA is performed by the protocol described by Qiu, X, et al., PLoS ONE.2009; 4(5): e5547.10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 31/33[0239] The VSVAG/MARVGP immunized animals do not develop a detectable antibody response to EboBun. In contrast,potent antibody responses are detected in all VSVAG/EboBunGPimmunized animals independent of immunization route. Between days 14 and 21 post-vaccination, all VSVAG/EboBunGPimmunized NHPs develop high levels of IgA, IgM, and IgGagainst EboBunGP. After challenge the IgM titres do not exceed the post-vaccination levels, however, IgGand IgA antibody titres are increased peaking 14 days post-challenge then slowly decreasing before maintaining arelatively high antibody titre up to 9 months.[0240] The level of neutralization antibodies is detected by a EboBun-GFP flow cytometric neutralization assay in serumcollected at days 0 and 21 post-vaccination.Samples are assayed in duplicate for their ability to neutralize an infection with EboBun-GFP in VeroE6 cells. Seriallydiluted serum samples are incubated with an equal volume of EboBun-GFP in DMEM, at 37 C, 5%CO2 for 1 hr followed by addition of 150 l per well of a confluent 12 well plate of VeroE6 cells (MOI = 0.0005). After 2hours at 37 C, 5% C02, 1 ml of DMEM, 2% fetal bovine serym (FBS), 100 U/ml penicillin, 100 g/ml streptomycin is addedper well and incubated for 5 days. Cells are harvested by removing the culture supernatant, washing with 1 ml PBS, 0.04%EDTA, then adding 800 l of PBS 0.04% EDTA for 5 minutes at 37 C before adding 8 ml PBS, 4%paraformaldehyde (PFA) and overnight incubation. The cells are acquired (10,000 events) and analyzed with CellQuestPro v3.3 on a Becton Dickinson FACSCalibur flow cytometer.[0241] The OR and IN routes produce EboBunGP-specific neutralizing antibodies with the ORroute producing the highest titres post-vaccination. The IM immunization produces detectable levels of neutralizingantibody. In comparison, 3/4 NHPs in the OR group demonstrate a 50% reduction in EboBun-GFP positive cells at a titreof 1:40. Similarly, the IN route results in a reduction of EboBun-GFP positive cells at the 1:40 dilution.[0242] EboBunGP-specific effector cellular immune responses are determined using IL-2 and IFN-y ELISPOT assays asdescribed by Qin, X, et al., PLoS ONE. 2009; 4(5):e5547 to determine the number of IL-2 and IFN-y secreting lymphocytes. Prior to challenge on days 10 to 14 postvaccinationthere is a detectable EboBun immunogen-specific IFN-y response in all immunized animals. The IM route isthe most potent, inducing approximately 2-fold more IFN-y secreting cells than OR (p<0.001) or IN (p = 0.043) routes. Astrong post-challenge secondary IFN-y response is induced in all VSVAG/EboBun immunized animals with the IM routeproducing the most IFN-y cells at day 6. By day 10 the OR group demonstrates a stronger response. The IFN-y in the INgroup rises steadily, peaking at day 26 post-challenge with 4.3 and 2 fold more EboBun specific IFN-y secreting cells thanthe IM (p = 0.003) and OR (p = 0.075) group, respectively. All three routes produce strong EboBun-specific IFN-yresponses.[0243] Post-vaccination, the IM group also has more EboBunGP-specific IL-2 secreting cells than either of the mucosallyimmunized groups. Post-challenge, the IM route continues to dominate early after challenge peaking on day 10. Thisdifference shows a trend when compared to the INgroup (p = 0.067) and is significant when compared to the OR group (p<0.001).Additionally, the INgroup has more IL-2 producing cells than the OR group (p = 0.090) on day 10 post-challenge. By day 26 post-challenge allthree routes continue to produce a EboBunGP-specific IL-2 response, however, the IN group response is strongest. At day26 post-challenge the INgroup has the most potent IFN-y and IL-2 responses, as well as the highest IgA and IgG antibody titre, indicating thisimmunization route, followed by a EboBun challenge, results in the development of potent and sustained effectorresponses.[0244] Absolute lymphocyte numbers for CD3+, CD4+, and CD8+ (CD3+4-) T cell populations are determined by flowcytometry. No decrease is observed in the lymphocyte populations for any of the VSVAG/EboBunGP vaccinated NHPs. Incontrast, control animals who are not protected from EboBun show lymphocyte numbers decreased by 28-57%.[0245] Macrophage numbers are slightly increased in control animals. However, the number of CD14+ cells is greater inthe VSVAG/EboBunGP vaccinated groups with the IMroute showing the most significant increases.[0246] In order to determine the long term immune response after challenge, EboBunGP-specific CD4+ and CD8+memory T-lymphocytes are examined for their ability to proliferate (CFSE-) or produce IFN-y in response to EboBunGPpeptides at 6 months post-vaccination.EboBunGP-specific memory responses are observed as a result of vaccination followed by a ZEBOV challenge. Theseresponses persist for at least 6 months. The memory populations in ORand IN inoculation routes demonstrate the greatest potential for proliferation and IFN-y production post-challenge.[0247] Any patents or publications mentioned in this specification are incorporated herein by reference to the same extentas if each individual publication is specifically and individually indicated to be incorporated by reference.[0248] The compositions and methods described herein are presently representative of preferred embodiments,exemplary, and not intended as limitations on the scope of the invention. Changes therein and other uses will occur tothose skilled in the art. Such changes and other uses can be made without departing from the scope of the invention asset forth in the claims. All numerical ranges are inclusive of the whole integers and decimals between the endpoints, and10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 32/33inclusive of the endpoints.References 1. Suzuki, Y., and Gojobori, T., (1997) The origin and evolution of Ebola and Marburg viruses. Mol Bio Evol,14(8): 800-806.2. Sanchez, A., Geisbert, T.W., Feldmann, H. in Fields Virology (ed. Knipe, D.M., Howley, P.M.) 1409 - 1448 (Lippincott Williams and Wilkins, Philadelphia, 2007).310 Leroy, E.M. et al., (2005) Fruit bats as reservoirs of Ebola virus.Nature, 438, 575-6.4. Towner, J.S. et al., (2007) Marburg virus infection detected in a common African bat. PLoS ONE, 2(8), e764.5. Swanepoel, R. et al., (2007) Studies of reservoir hosts for Marburg virus.Emerg Infect Dis, 13(12), 1847-51.615 Le Guenno, B. et al., (1995) Isolation and partial characterization of a new species of Ebola virus.Lancet, 345(8960), 1271-4.7. Ksiazek, T. G. et al. (1999) Clinical virology of Ebola hemorrhagic fever (EHF): virus, virus antigen, IgG and IgMantibody findings among EHF patients in Kikwit, 1995. J.Infect Dis 179 (suppl 1), S177-S187.820 Cox-Foster, D. L. et al. (2007) A metagenomic survey of microbes in honey bee colony collapse disorder. Science318, 283-7.9. World Health Organization (2008) Ebola outbreak contained in Uganda.Features, 22 February, www.who.int/features/2008/ebola-outbreak/en/.10. Sullivan, N. J., Sanchez, A., Rollin, P. E., Yang, Z.-Y. & Nabel, G. J.(2000) Development of a 25 preventive vaccine for Ebola virus infection in primates. Nature 408, 605-609.11. Ksiazek, T. G., West, C. P., Rollin, P. E., Jahrling, P. B. & Peters, C.J. (1999) ELISA for the detection of antibodies to Ebola viruses. J. Infect Dis 179 (suppl 1), S191-S198.12. Rodriguez, L. et al. (1999) Persistence and genetic stability of Ebola virus during the outbreak in Kikwit, Zaire 1995. J.Infect Dis 179 (suppl 1), S170-S176.130 Sanchez, A. et al. Detection and molecular characterization of Ebola viruses causing disease in human andnonhuman primates. J. Infect Dis 179 (suppl 1), S164-S169 (1999).14. Jones, S. M. et al. (2005) Live attenuated recombinant vaccine protects nonhuman primates against Ebola andMarburg viruses. Nat Med 11, 786-90.15. Geisbert, T. W. et al. (2008) Recombinant vesicular stomatitis virus vector mediates postexposure protection againstSudan Ebola hemorrhagic fever in nonhuman primates. J Virol 82, 5664-8.165 Towner, J. S., Sealy, T. K., Ksiazek, T. & Nichol, S. T. (2007) High-throughput molecular detection of hemorrhagicfever virus threats with applications for outbreak settings. J.Inf Dis 196 (suppl 2), S205-212.17. Towner, J. S. et al. (2006) Marburgvirus genomics and association with a large hemorrhagic fever outbreak in Angola.J Virol 80, 6497-516.1$0 Posada, D. & Crandall, K. A. (1998) MODELTEST: testing the model of DNAsubstitution.Bioinformatics 14, 817-818.19. Swofford, D. L. (2002) PAUP*: phylogenetic analysis using parsimony (*and other methods) version 4.0blO. SinauerAssoc., Sunderland, Mass.20. Felsenstein, J. (1985) Confidence limits on phylogenies: an approach using the bootstrap. Evolution 15 39, 783-791.21. Ronquist, F. & Huelsenbeck, J. P. (2003) MRBAYES 3: Bayesian phylogenetic inference under mixed models.Bioinformatics 19, 1572-1574.22. Nylander, J. A. A., Wilgenbusch, J. C., Warren, D. L. & Swofford, D. L.(2008) AWTY (are we there yet?): a system for graphical exploration of MCMC convergence in Bayesian phylogenetics.20 Bioinformatics 24, 581-583.CLASSIFICATIONSInternationalClassification A61K39/12, C07K14/08, C07K16/10, C12N7/01, C12N15/40, G01N33/68CooperativeClassificationC07K16/10, C12N2760/14145, C07K2316/96, A61K2039/5256, C12N2810/6072, A61K2039/53, A61K39/12, C12N2760/14143,G01N2333/08, G01N33/56983, C12N7/00EuropeanClassification C07K16/10, C12N7/00, G01N33/569K, A61K39/12LEGAL EVENTSDate Code Event Description10/2/2014 Patent CA2741523A1 - Human ebola virus species and compositions and methods thereof - Google Patentshttp://www.google.com/patents/CA2741523A1 33/33Jul 21, 2014 EEER Examination request Effective date: 20140714Google Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google

The U.S. Invented Ebola and the Cure for the Ebola   Virus They Invented and Patented it.

These Recordings and Files found on this site prove that the US Invented Ebola and the Cure For the Ebola they Invented

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Ebola is a Manufactured Disease Invented firstly in Germany. The United Sates then invented several strains of the Ebola Virus as a weapon of Biological Warfare. They also invented the Cure for the disease. The patent recordings found on this site prove that the U.S. Invented Ebola and the Cure for the Ebola virus they invented. Please feel free to listen to the recording and to download the PDF file evidence of ebola. You can also click on the Patent Office file.

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