Induction and evasion of innate antiviral responses by hepatitis C virus

J Biol Chem. 2010 Jul 23;285(30):22741-7. doi: 10.1074/jbc.R109.099556. Epub 2010 May 10.

Abstract

Persistent hepatitis C virus infection is associated with progressive hepatic fibrosis and liver cancer. Acute infection evokes several distinct innate immune responses, but these are partially or completely countered by the virus. Hepatitis C virus proteins serve dual functions in replication and immune evasion, acting to disrupt cellular signaling pathways leading to interferon synthesis, subvert Jak-STAT signaling to limit expression of interferon-stimulated genes, and block antiviral activities of interferon-stimulated genes. The net effect is a multilayered evasion of innate immunity, which negatively influences the subsequent development of antigen-specific adaptive immunity, thereby contributing to virus persistence and resistance to therapy.

Publication types

  • Research Support, N.I.H., Extramural
  • Review

MeSH terms

  • Animals
  • Hepacivirus / immunology*
  • Hepatitis C / immunology
  • Hepatitis C / metabolism
  • Hepatitis C / pathology
  • Humans
  • Immune Evasion*
  • Immunity, Innate*
  • Liver / immunology
  • Liver / metabolism
  • Liver / pathology
  • Liver / virology
  • Signal Transduction / immunology