Development and characterization of a recombinant cDNA-based hepatitis C virus system

Biochem Biophys Res Commun. 2007 Jul 20;359(1):57-62. doi: 10.1016/j.bbrc.2007.05.073. Epub 2007 May 21.

Abstract

Invention of subgenomic HCV replicon a few years ago and recent success of in vitro production of infectious HCV have improved our knowledge of the HCV life cycle, replication, pathogenesis, and screening of anti-HCV therapeutics. However, the highly genotype-dependent nature of the in vitro HCV production system has limited its potential for HCV research. In this study, we constructed a recombinant DNA-based HCV system that contained EF-1alpha promoter-driven HCV genotype 1b with HCV E1/E2 deleted and replaced by GFP. We co-transfected this recombinant cDNA with HCV E1/E2 or VSV-G expression plasmid into 293T cells, and we showed HCV protein expression and processing and demonstrated production of HCV-like particles in culture supernatant of co-transfected cells. These results support potential use of this system for studies on expression and processing of the HCV polyprotein and assembly and release of HCV-like particles.

MeSH terms

  • Cell Line
  • DNA, Complementary / genetics*
  • Genetic Vectors / genetics
  • Hepacivirus / physiology*
  • Humans
  • Kidney / metabolism*
  • Kidney / virology*
  • Protein Engineering / methods*
  • Recombinant Proteins / biosynthesis*
  • Virion / genetics
  • Virion / metabolism*

Substances

  • DNA, Complementary
  • Recombinant Proteins