Related Experiment Video

Updated: Apr 6, 2026

A Competent Hepatocyte Model Examining Hepatitis B Virus Entry through Sodium Taurocholate Cotransporting Polypeptide as a Therapeutic Target
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A Competent Hepatocyte Model Examining Hepatitis B Virus Entry through Sodium Taurocholate Cotransporting Polypeptide as a Therapeutic Target

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A targeted functional RNA interference screen uncovers glypican 5 as an entry factor for hepatitis B and D viruses

Eloi R Verrier1,2, Che C Colpitts1,2, Charlotte Bach1,2

  • 1Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France.

Hepatology (Baltimore, Md.)
|July 31, 2015
PubMed
Abstract

Insights

Researchers identified glypican 5 as a key factor for hepatitis B and D virus entry into liver cells. This discovery advances understanding of viral infections and may lead to new hepatitis therapies.

Area of Science:

  • Hepatology
  • Virology
  • Molecular Biology

Background:

  • Chronic hepatitis B and D infections are significant global causes of liver disease and hepatocellular carcinoma.
  • Current therapeutic strategies lack curative approaches for these viral infections.
  • Hepatitis B and D viruses share envelope proteins and utilize the sodium/taurocholate cotransporting polypeptide as a hepatocyte receptor, but entry mechanisms remain unclear.

Purpose of the Study:

  • To elucidate the mechanisms of hepatitis delta virus entry and infection.
  • To identify host cell factors involved in hepatitis B and D virus entry.

Main Methods:

  • Establishment of a high-throughput infectious cell culture model for hepatitis delta virus.
  • Implementation of a targeted RNA interference screen to identify viral entry factors.

Main Results:

  • Identification of glypican 5 as a common host cell entry factor for both hepatitis B and delta viruses.
  • Demonstration of glypican 5's crucial role in the viral entry process.

Conclusions:

  • The findings enhance comprehension of virus-host interactions during cell entry.
  • Glypican 5 represents a potential therapeutic target for hepatitis B and D infections.
  • Virus-glypican 5 interactions may contribute to the pathogenesis of virus-induced liver disease and cancer.

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