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Related Experiment Videos

Host cell responses induced by hepatitis C virus binding.

Xinhua Fang1, Mirjam B Zeisel, Jochen Wilpert

  • 1Department of Medicine II, University of Freiburg, Freiburg, Germany.

Hepatology (Baltimore, Md.)
|May 27, 2006
PubMed
Summary
This summary is machine-generated.

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Hepatitis C virus (HCV) binding to liver cells triggers significant changes in host gene expression, impacting immune responses and lipid metabolism. These cellular reprogramming events are crucial for viral entry, replication, and evasion of host defenses.

Area of Science:

  • Virology
  • Molecular Biology
  • Genomics

Background:

  • Hepatitis C virus (HCV) infection initiates when viral envelopes bind to hepatocyte cell surfaces.
  • Understanding host cell responses to HCV binding is crucial for elucidating viral pathogenesis.

Purpose of the Study:

  • To investigate the impact of HCV binding on host cell biology through genomic analysis.
  • To identify host genes and pathways modulated by HCV-host cell surface interactions.

Main Methods:

  • Gene expression profiling of HepG2 hepatoma cells and human liver tissues using cDNA microarrays.
  • Utilized recombinant HCV envelope glycoproteins and HCV-like particles (HCV-LPs) for cell binding studies.
  • Compared transcriptional changes in vitro with gene expression profiles from HCV-infected patients.

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Main Results:

  • HCV-LP binding to hepatoma cells altered the expression of 565 out of 7,419 host genes.
  • Significant modulation of genes involved in innate immune responses and lipid metabolism was observed.
  • 27 genes showed similar expression alterations in hepatoma cells post-HCV-LP binding and in vivo during HCV infection.

Conclusions:

  • HCV binding induces a complex transcriptional program that modulates host gene expression.
  • This reprogramming of cellular gene expression is vital for viral entry, replication, and immune evasion.
  • HCV-induced cellular signaling contributes to host cell responses during infection.