A combined bovine herpesvirus 1 gB-gD DNA vaccine induces immune response in mice.
Although DNA vaccines have several advantages over conventional vaccines, antibody production and protection are often not adequate, particularly in single plasmid vaccine formulations. Here we assessed the potential for a combined vaccine based on plasmids encoding the membrane-anchored or secreted forms of bovine herpesvirus type 1 (BHV-1) glycoprotein B and D (gB and gD) to induce neutralizing and cell mediated immune responses in mice. Animals were injected by intramuscular, subcutaneous and intranasal routes. Mice immunized with the combined vaccine containing the secreted forms of BHV-1 glycoproteins developed higher titers of anti-BHV-1 neutralizing antibodies, compared to wild type gB/gD combined plasmids and to single plasmid injected groups. Cellular immunity was also developed in mice immunized with combined vaccines, whereas low or no response were observed in single plasmid injected animals. The data suggest the potential use of this combined vaccine in in vivo trials of calves, in order to evaluate its protective efficacy.
Caselli
E
E
Department of Experimental and Diagnostic Medicine, Section of Microbiology, University of Ferrara, Via Borsari 46, 44100 Ferrara, Italy. css@unife.it
Boni
M
M
Di Luca
D
D
Salvatori
D
D
Vita
A
A
Cassai
E
E
D000281:Administration, Intranasal; D000818:Animals; D000914:Antibodies, Viral / Q000097:blood; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology* / Q000517:prevention & control / Q000821:virology*; D004279:DNA, Viral / Q000737:chemistry / Q000235:genetics; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006566:Herpesviridae Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary* / Q000821:virology; D007242:Herpesvirus 1, Bovine / Q000235:genetics / Q000276:immunology*; D022283:Herpesvirus Vaccines / Q000008:administration & dosage / Q000235:genetics / Q000276:immunology*; D007114:Immunization; D051379:Mice; D008807:Mice, Inbred BALB C; D009500:Neutralization Tests; D010957:Plasmids; D016133:Polymerase Chain Reaction; D017778:Vaccines, Combined / Q000008:administration & dosage / Q000235:genetics / Q000276:immunology; D019444:Vaccines, DNA / Q000008:administration & dosage / Q000235:genetics / Q000276:immunology; D014759:Viral Envelope Proteins / Q000235:genetics / Q000276:immunology*; D014764:Viral Proteins / Q000235:genetics / Q000276:immunology*
D000914:Antibodies, Viral; D004279:DNA, Viral; D022283:Herpesvirus Vaccines; D017778:Vaccines, Combined; D019444:Vaccines, DNA; D014759:Viral Envelope Proteins; D014764:Viral Proteins; C046998:bovine herpesvirus type-1 glycoproteins