title: Prime-boost immunization with DNA and modified vaccinia virus ankara vectors expressing herpes simplex virus-2 glycoprotein D elicits greater specific antibody and cytokine responses than DNA vaccine alone.
abstract: Several reports have indicated that prime-boost strategies of vaccination can enhance the level of specific immunity induced by nucleic acid vaccines. The present report describes such a strategy with herpes simplex virus (HSV)-2 glycoprotein D (gD), using combinations of plasmid vector that expresses gD (pgD2) and a recombinant modified vaccinia virus Ankara vector that expresses gD (MVA-gD2). The IgG antibody response to gD and the HSV-2 neutralizing antibody response were greatest when the MVA-gD2 vector was used as the priming immunization and then was boosted with either pgD2 or MVA-gD2. Determination of the isotype profile of MVA-gD2-primed mice revealed a much broader distribution of isotypes than that seen after DNA vaccination. In addition, antigen-stimulated spleen cells from mice primed with MVA-gD2 and boosted with either MVA-gD2 or pgD2 produced higher levels of interleukin-2 and interferon-gamma than did those from pgD2-primed mice, indicating that a prime-boost immunization strategy that uses the MVA and plasmid DNA vector dramatically enhances and diversifies the humoral and cellular immune response to HSV-2 gD.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000096:biosynthesis / Q000276:immunology; D000918:Antibody Specificity; D015153:Blotting, Western; D016207:Cytokines / Q000096:biosynthesis / Q000276:immunology*; D004195:Disease Models, Animal; D015967:Gene Expression Regulation, Viral; D006561:Herpes Simplex / Q000276:immunology* / Q000517:prevention & control; D018258:Herpesvirus 2, Human / Q000235:genetics / Q000276:immunology; D007074:Immunoglobulin G / Q000096:biosynthesis / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D010957:Plasmids / Q000235:genetics; D014611:Vaccination; D019444:Vaccines, DNA / Q000235:genetics / Q000276:immunology*; D014616:Vaccinia virus / Q000235:genetics*; D014759:Viral Envelope Proteins / Q000235:genetics / Q000276:immunology*
chemical_list: D000914:Antibodies, Viral; D016207:Cytokines; D007074:Immunoglobulin G; D019444:Vaccines, DNA; D014759:Viral Envelope Proteins; C040570:glycoprotein D-herpes simplex virus type 2