Hepatitis B Virus-Hepatocyte Interactions and Innate Immune Responses: Experimental Models and Molecular Mechanisms

Emmanuel Thomas, Thomas F. Baumert

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Chronic hepatitis B virus (HBV) infection is a major cause of liver disease and cancer worldwide. While current therapeutic approaches can efficiently control viral infection, efficient curative antivirals are absent. The understanding of virus-hepatocyte interactions and sensing of viral infection is an important prerequisite for the development of novel antiviral therapies for cure. Hepatocyte intrinsic innate immunity provides a rapid first line of defense to combat viral infection through the upregulation of antiviral and inflammatory genes. However, the functional relevance of many of these antiviral signaling pathways in the liver and their role in HBV pathogenesis is still only partially understood. The recent identification of intracellular RNA and DNA sensing pathways and their involvement in disease biology, including viral pathogenesis and carcinogenesis, is currently transforming our understanding of virus-host interactions. Here the authors review the current knowledge on intrinsic antiviral innate immune responses including the role of viral nucleic acid sensing pathways in the liver. Since HBV has been designated as a stealth virus, the study of the impact of HBV on signaling pathways in the hepatocyte is of significant interest to understand viral pathogenesis. Characterizing the mechanism underlying these HBV-host interactions and targeting related pathways to enhance antiviral innate responses may open new strategies to trigger noncytopathic clearance of covalently closed circular DNA to ultimately cure patients with chronic HBV infection.

Original languageEnglish (US)
Pages (from-to)301-314
Number of pages14
JournalSeminars in liver disease
Volume39
Issue number3
DOIs
StatePublished - 2019

Keywords

  • IRF3
  • antiviral immune responses
  • chemokines
  • cytokines
  • hepatitis b virus
  • host defense
  • intrinsic innate responses
  • nuclear factor-kappaB
  • pattern recognition receptor

ASJC Scopus subject areas

  • Hepatology

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