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Relative sensitivity of hepatitis B virus and other hepatotropic viruses to the antiviral effects of cytokines

Academic Article
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Overview

authors

  • McClary, H.
  • Koch, R.
  • Chisari, Francis
  • Guidotti, Luca

publication date

  • March 2000

journal

  • Journal of Virology  Journal

abstract

  • We have previously shown that hepatitis B virus (HBV) replication is inhibited noncytopathically in the livers of transgenic mice following injection of HBV-specific cytotoxic T lymphocytes (CTLs) or infection with unrelated hepatotropic viruses, including lymphocytic choriomeningitis virus (LCMV) and adenovirus. These effects are mediated by gamma interferon (IFNgamma), tumor necrosis factor alpha (TNFalpha), and IFNalpha/beta. In the present study, we crossed HBV transgenic mice with mice genetically deficient for IFNgamma (IFNgammaKO), the TNFalpha receptor (TNFalphaRKO), or the IFNalpha/beta receptor (IFNalpha/betaRKO) in order to determine the relative contribution of each cytokine to the antiviral effects observed in each of these systems. Interestingly, we showed that HBV replicates in unmanipulated IFNgammaKO and IFNalpha/betaRKO mice at levels higher than those observed in control mice, implying that baseline levels of these cytokines control HBV replication in the absence of inflammation. We also showed that IFNgamma mediates most of the antiviral effect of the CTLs while IFNalpha/beta is primarily responsible for the early inhibitory effect of LCMV and adenovirus on HBV replication. In addition, we showed that the hepatic induction of IFNalpha/beta observed after injection of poly(I. C) is sufficient to inhibit HBV replication and that a similar antiviral effect is achieved by systemic administration of very high doses of IFNalpha. We also compared the relative sensitivity of LCMV and adenovirus to control by IFNgamma, TNFalpha, or IFNalpha/beta in these animals. Importantly, IFNalpha/betaRKO mice, and to a lesser extent IFNgammaKO mice, showed higher hepatic levels of LCMV RNA and adenovirus DNA and RNA than control mice, underscoring the importance of both interferons in controlling these other viral infections as well.

subject areas

  • Adenoviridae
  • Animals
  • Cytokines
  • Hepatitis B
  • Hepatitis B virus
  • Interferon Inducers
  • Interferon-gamma
  • Lymphocyte Transfusion
  • Lymphocytic choriomeningitis virus
  • Mice
  • Mice, Knockout
  • Mice, Transgenic
  • Poly I-C
  • Receptors, Tumor Necrosis Factor
  • T-Lymphocytes, Cytotoxic
  • Tumor Necrosis Factor-alpha
  • Virus Replication
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Identity

International Standard Serial Number (ISSN)

  • 0022-538X

Digital Object Identifier (DOI)

  • 10.1128/jvi.74.5.2255-2264.2000

PubMed ID

  • 10666256
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Additional Document Info

start page

  • 2255

end page

  • 2264

volume

  • 74

issue

  • 5

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