Recombinant MVA expressing secreted glycoprotein D of BoHV-1 induces systemic and mucosal immunity in animal models

Viral Immunol. 2011 Aug;24(4):331-9. doi: 10.1089/vim.2011.0018.

Abstract

Bovine herpesvirus-1 (BoHV-1) infection is distributed worldwide and the development of new tools to fight against this pathogen has become extremely important. In this work a recombinant modified vaccinia virus Ankara (MVA) vector expressing the secreted version of glycoprotein D, MVA-gDs, was obtained and evaluated as a candidate vaccine. First, the correct expression, antigenicity, and N-glycosylation of glycoprotein D were confirmed by molecular techniques. Then MVA-gDs was used as parenteral immunogen in BALB/C mice in which a specific anti-gD humoral immune response was induced and maintained for 7 mo. Two doses of MVA-gDs supplemented with cholera toxin delivered by intranasal immunization induced IgA anti-gD humoral immune responses in nasal and bronchopulmonary washes, as well as IgG anti-gD antibodies in serum samples. In order to evaluate the protection conferred by MVA-gDs immunization, a rabbit BoHV-1 challenge assay was performed. A shorter viral excretion period and a reduction in the number of animals shedding BoHV-1 was observed in the group immunized with recombinant MVA-gDs. In conclusion our data encourage further studies to evaluate MVA-gDs, alone or combined with other immunogens, as a candidate vaccine for BoHV-1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adjuvants, Immunologic / administration & dosage
  • Adjuvants, Immunologic / genetics
  • Administration, Intranasal
  • Animals
  • Antibodies, Viral / analysis
  • Antibodies, Viral / blood
  • Bronchoalveolar Lavage Fluid / immunology
  • Cholera Toxin / administration & dosage
  • Cholera Toxin / genetics
  • Disease Models, Animal
  • Drug Carriers*
  • Female
  • Genetic Vectors
  • Herpesviridae Infections / immunology
  • Herpesviridae Infections / prevention & control
  • Herpesvirus Vaccines / administration & dosage
  • Herpesvirus Vaccines / genetics
  • Herpesvirus Vaccines / immunology*
  • Immunoglobulin A / analysis
  • Immunoglobulin G / blood
  • Male
  • Mice
  • Mice, Inbred BALB C
  • Nasal Mucosa / immunology
  • Rodent Diseases / immunology
  • Rodent Diseases / prevention & control
  • Time Factors
  • Vaccines, Synthetic / administration & dosage
  • Vaccines, Synthetic / genetics
  • Vaccines, Synthetic / immunology
  • Vaccinia virus / genetics*
  • Viral Proteins / genetics
  • Viral Proteins / immunology*
  • Virus Shedding

Substances

  • Adjuvants, Immunologic
  • Antibodies, Viral
  • Drug Carriers
  • Herpesvirus Vaccines
  • Immunoglobulin A
  • Immunoglobulin G
  • Vaccines, Synthetic
  • Viral Proteins
  • bovine herpesvirus type-1 glycoproteins
  • Cholera Toxin