title: Comparison of the protective efficacy of naked DNA, DNA-based Sindbis replicon, and packaged Sindbis replicon vectors expressing Hantavirus structural genes in hamsters.
abstract: Seoul virus (SEOV) is a member of the Hantavirus genus (family Bunyaviridae) and an etiological agent of hemorrhagic fever with renal syndrome. The medium (M) and small (S) gene segments of SEOV encode the viral envelope glycoproteins and nucleocapsid protein, respectively. We compared the immunogenicity and protective efficacy of naked DNA (pWRG7077), DNA-based Sindbis replicon (pSIN2.5), and packaged Sindbis replicon vectors (pSINrep5), containing either the M or S gene segment of SEOV in Syrian hamsters. All of the vectors elicited an anti-SEOV immune response to the expressed SEOV gene products. Vaccinated hamsters were challenged with SEOV and monitored for evidence of infection. Protection from infection was strongly associated with M-gene vaccination. A small number of S-gene-vaccinated animals also were protected. Hamsters vaccinated with the pWRG7077 vector expressing the M gene demonstrated the most consistent protection from SEOV infection and also were protected from heterologous hantavirus (Hantaan virus) infection.
authors.affiliation: Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland 21702, USA. Kurt.Kamrud@det.amedd.army.mil
authors.forename: K I
authors.initials: KI
authors.lastname: Kamrud
authors.forename: J W
authors.initials: JW
authors.lastname: Hooper
authors.forename: F
authors.initials: F
authors.lastname: Elgh
authors.forename: C S
authors.initials: CS
authors.lastname: Schmaljohn
mesh_terms: D000818:Animals; D006224:Cricetinae; D004279:DNA, Viral / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay; D005822:Genetic Vectors; D006476:Orthohantavirus / Q000235:genetics / Q000276:immunology*; D018778:Hantavirus Infections / Q000276:immunology / Q000517:prevention & control*; D008647:Mesocricetus; D009500:Neutralization Tests; D019590:Nucleocapsid Proteins / Q000235:genetics; D011233:Precipitin Tests; D012093:Replicon / Q000276:immunology; D012845:Sindbis Virus / Q000276:immunology; D019444:Vaccines, DNA / Q000008:administration & dosage / Q000276:immunology*; D014759:Viral Envelope Proteins / Q000235:genetics; D015678:Viral Structural Proteins / Q000235:genetics / Q000276:immunology*; D014765:Viral Vaccines / Q000008:administration & dosage / Q000235:genetics / Q000276:immunology*
chemical_list: D004279:DNA, Viral; D019590:Nucleocapsid Proteins; D019444:Vaccines, DNA; D014759:Viral Envelope Proteins; D015678:Viral Structural Proteins; D014765:Viral Vaccines; C104008:glycoprotein G1, Hantavirus; C090197:glycoprotein G2, Hantavirus