Hepatitis C virus core and envelope proteins do not suppress the host's ability to clear a hepatic viral infection

J. Sun, F. Bodola, X. Fan, H. Irshad, L. Soong, S. M. Lemon, T. S. Chan

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Several hepatitis C virus (HCV) proteins have been shown in vitro to interact with host cellular components that are involved in immune regulation. However, there is a paucity of data supporting the relevance of these observations to the in vivo situation. To test the hypothesis that such an interaction suppresses immune responses, we studied a line of transgenic C57BL/6 mice that express the HCV core and envelope proteins in the liver. The potential effects of these proteins on the hepatic immune response were evaluated by challenging these mice with a hepatotropic adenovirus. Both transgenic and nontransgenic mice developed similar courses of infection and cleared the virus from the liver by 28 days postinfection. Both groups of mice mounted similar immunoglobulin G (IgG), IgG2a, interleukin-2, and tumor necrosis factor alpha responses against the virus. Additionally, BALB/c mice were able to clear infection with recombinant adenovirus that does or does not express the HCV core and envelope 1 proteins in the same manner. These data suggest that HCV core and envelope proteins do not inhibit the hepatic antiviral mechanisms in these murine experimental systems and thus favor a model in which HCV circumvents host responses through a mechanism that does not involve general suppression of intrahepatic immune responses.

Original languageEnglish (US)
Pages (from-to)11992-11998
Number of pages7
JournalJournal of virology
Volume75
Issue number24
DOIs
StatePublished - Dec 17 2001

ASJC Scopus subject areas

  • Microbiology
  • Immunology
  • Insect Science
  • Virology

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