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Hepatitis C virus entry and the tetraspanin CD81

Michelle J Farquhar1, Helen J Harris, Jane A McKeating

  • 1HCV Research Group, Institute for Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK. m.j.farquhar@bham.ac.uk

Biochemical Society Transactions
|March 25, 2011
PubMed

Insights

CD81 is a key receptor for hepatitis C virus (HCV) entry. This review details CD81

Area of Science:

  • Virology
  • Cell Biology
  • Immunology

Background:

  • CD81, a tetraspanin protein, is crucial for hepatitis C virus (HCV) infection.
  • Understanding CD81's function is vital for developing antiviral strategies.

Purpose of the Study:

  • To review recent findings on CD81's role in HCV entry and viral lifecycle.
  • To discuss CD81's involvement in HCV-associated B-cell and central nervous system (CNS) abnormalities.

Main Methods:

  • Literature review of published data on CD81 and HCV interactions.
  • Analysis of studies focusing on cellular mechanisms of viral entry.

Main Results:

  • CD81 facilitates HCV internalization through actin-dependent lateral diffusion and endocytosis.
  • The CD81-Claudin-1 complex is essential for HCV entry into host cells.
  • CD81 interactions influence viral replication and pathogenesis.

Conclusions:

  • CD81 is a critical mediator of HCV entry and plays multifaceted roles in the viral life cycle.
  • Targeting CD81-HCV interactions may offer therapeutic potential for hepatitis C.
  • Further research into CD81's role in HCV-induced pathologies is warranted.

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