Hepatitis C virus (HCV) is a major cause of chronic hepatitis worldwide. Scavenger receptor class B type I (SR-BI) has been shown to bind HCV envelope glycoprotein E2, participate in entry of HCV pseudotype particles, and modulate HCV infection. However, the functional role of SR-BI for productive H
Is CD81 the key to hepatitis C virus entry?
β Scribed by Charles M. Rice
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 34 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0270-9139
No coin nor oath required. For personal study only.
β¦ Synopsis
Chronic hepatitis C virus (HCV) infection occurs in
about 3 percent of the world's population and is a major cause of liver disease. HCV infection is also associated with cryoglobulinemia, a B lymphocyte proliferative disorder. Virus tropism is controversial, and the mechanisms of cell entry remain unknown. The HCV envelope protein E2 binds human CD81, a tetraspanin expressed on various cell types including hepatocytes and B lymphocytes. Binding of E2 was mapped to the major extracellular loop of CD81. Recombinant molecules containing this loop bound HCV and antibodies that neutralize HCV infection in vivo inhibited virus binding to CD81 in vitro. COMMENTS
π SIMILAR VOLUMES
## Abstract Binding of the hepatitis C virus (HCV) envelope protein E2 to CD81 provides a costimulatory signal for human T cells. This phenomenon may play a role in liver damage and autoimmune manifestations associated with HCV infection. Here we show that crossβlinking of CD81 by HCV E2 induced a
The study of hepatitis C virus (HCV), a major cause of chronic liver disease, has been hampered by the lack of a cell culture system