Protection of IFNAR (-/-) mice against bluetongue virus serotype 8, by heterologous (DNA/rMVA) and homologous (rMVA/rMVA) vaccination, expressing outer-capsid protein VP2

PLoS One. 2013 Apr 12;8(4):e60574. doi: 10.1371/journal.pone.0060574. Print 2013.

Abstract

The protective efficacy of recombinant vaccines expressing serotype 8 bluetongue virus (BTV-8) capsid proteins was tested in a mouse model. The recombinant vaccines comprised plasmid DNA or Modified Vaccinia Ankara viruses encoding BTV VP2, VP5 or VP7 proteins. These constructs were administered alone or in combination using either a homologous prime boost vaccination regime (rMVA/rMVA) or a heterologous vaccination regime (DNA/rMVA). The DNA/rMVA or rMVA/rMVA prime-boost were administered at a three week interval and all of the animals that received VP2 generated neutralising antibodies. The vaccinated and non-vaccinated-control mice were subsequently challenged with a lethal dose of BTV-8. Mice vaccinated with VP7 alone were not protected. However, mice vaccinated with DNA/rMVA or rMVA/rMVA expressing VP2, VP5 and VP7 or VP2 alone were all protected.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antibodies, Neutralizing / blood
  • Bluetongue / blood
  • Bluetongue / immunology*
  • Bluetongue / prevention & control*
  • Bluetongue / virology
  • Bluetongue virus / immunology*
  • Capsid Proteins / immunology*
  • Chickens
  • Chlorocebus aethiops
  • Mice
  • Plasmids / immunology
  • RNA, Viral / blood
  • Receptor, Interferon alpha-beta / deficiency*
  • Receptor, Interferon alpha-beta / metabolism
  • Vaccination
  • Vaccines, DNA / immunology*
  • Vaccines, Synthetic / immunology*
  • Vero Cells
  • Viremia / immunology
  • Viremia / prevention & control
  • Viremia / virology

Substances

  • Antibodies, Neutralizing
  • Capsid Proteins
  • RNA, Viral
  • Vaccines, DNA
  • Vaccines, Synthetic
  • Receptor, Interferon alpha-beta