title: Expression in recombinant vaccinia virus of the equine herpesvirus 1 gene encoding glycoprotein gp13 and protection of immunized animals.
abstract: The equine herpesvirus 1 (EHV-1) gene encoding glycoprotein 13 (gp13) was cloned into the hemagglutinin (HA) locus of vaccinia virus (Copenhagen strain). Expression of the gp13 gene was driven by the early/late vaccinia virus H6 promoter. Metabolically radiolabeled polypeptides of approximately 47 and 44 kilodaltons and 90 kilodaltons (glycosylated form) were precipitated with both polyclonal and gp13-specific monoclonal antibodies. Presentation of gp13 on the cytoplasmic membrane of cells infected with the recombinant gp13 vaccinia virus was demonstrated by immunofluorescence of unfixed cells. Inoculation of the recombinant gp13 vaccinia virus into guinea pigs induced neutralizing antibodies to both EHV-1 and vaccinia virus. Hamsters vaccinated with the recombinant gp13 vaccinia virus survived a lethal challenge with the hamster-adapted Kentucky strain of EHV-1. These results indicate that expression in vaccinia virus vectors of EHV-1 gp13, the glycoprotein homolog of herpes simplex virus gC-1 and gC-2, pseudorabies virus gIII, and the varicella-zoster virus gpV may provide useful vaccine candidates for equine herpesvirus infections.
authors.affiliation: Wadsworth Center for Laboratories and Research, New York State Department of Health, Albany 12201.
authors.forename: P X
authors.initials: PX
authors.lastname: Guo
authors.forename: S
authors.initials: S
authors.lastname: Goebel
authors.forename: S
authors.initials: S
authors.lastname: Davis
authors.forename: M E
authors.initials: ME
authors.lastname: Perkus
authors.forename: B
authors.initials: B
authors.lastname: Languet
authors.forename: P
authors.initials: P
authors.lastname: Desmettre
authors.forename: G
authors.initials: G
authors.lastname: Allen
authors.forename: E
authors.initials: E
authors.lastname: Paoletti
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D001483:Base Sequence; D003001:Cloning, Molecular; D006224:Cricetinae; D005814:Genes, Viral; D006023:Glycoproteins / Q000235:genetics* / Q000276:immunology; D006168:Guinea Pigs; D006564:Herpesviridae / Q000235:genetics*; D004861:Herpesvirus 1, Equid / Q000235:genetics*; D008647:Mesocricetus; D008969:Molecular Sequence Data; D011233:Precipitin Tests; D011995:Recombination, Genetic; D014611:Vaccination; D014616:Vaccinia virus / Q000235:genetics* / Q000276:immunology; D014764:Viral Proteins / Q000235:genetics*; D014765:Viral Vaccines / Q000096:biosynthesis
chemical_list: D000914:Antibodies, Viral; D006023:Glycoproteins; D014764:Viral Proteins; D014765:Viral Vaccines