Multigenotype HCV-NS3 recombinant vaccinia viruses as a model for evaluation of cross-genotype immunity induced by HCV vaccines in the mouse

Vaccine. 2006 Jun 12;24(24):5140-8. doi: 10.1016/j.vaccine.2006.04.013. Epub 2006 May 2.

Abstract

Surrogate infections with HCV-recombinant vaccinia viruses (HCV-rVV) are a standard method to test the efficacy of hepatitis C virus (HCV) vaccine candidates in the mouse model. We established a panel of 16 HCV-rVV expressing the nonstructural protein 3 (NS3) of HCV genotypes 1a, 1b, 2, 3 and 4. Mice immunized with recombinant NS3 protein derived from HCV genotype 1b were challenged with the rVV. rVV-titers decreased up to 54-fold after subtype 1b challenge and up to 8.5-fold after subtype 1a challenge. No change was detected for genotype 2, 3, or 4. Our model is a convenient and reliable tool to analyze the induction of cross-genotype immunity by experimental vaccination of mice.

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Female
  • Genotype
  • Hepacivirus / immunology*
  • Immunization
  • Mice
  • Mice, Inbred BALB C
  • Molecular Sequence Data
  • Recombinant Proteins / immunology
  • Vaccines, Synthetic / immunology*
  • Vaccinia virus / genetics*
  • Viral Hepatitis Vaccines / immunology*
  • Viral Nonstructural Proteins / chemistry
  • Viral Nonstructural Proteins / genetics
  • Viral Nonstructural Proteins / immunology*

Substances

  • NS3 protein, hepatitis C virus
  • Recombinant Proteins
  • Vaccines, Synthetic
  • Viral Hepatitis Vaccines
  • Viral Nonstructural Proteins