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Published on: July 16, 2012
Modulation of programmed cell death pathways by the hepatitis C virus
Jude Juventus Aweya1, Yee-Joo Tan
1Collaborative Anti-Viral Research Group, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore.
Insights
Hepatitis C virus (HCV) proteins modulate programmed cell death pathways. Research using cell culture systems reveals how HCV replication impacts apoptosis and other cell death mechanisms.
Area of Science:
- Virology
- Cell Biology
- Hepatology
Background:
- Hepatitis C virus (HCV) is a major cause of non-A, non-B hepatitis globally.
- The HCV genome encodes a polyprotein processed into viral proteins that can affect host cell death.
- Understanding HCV's impact on cell death is crucial for developing antiviral strategies.
Purpose of the Study:
- To summarize current knowledge on how Hepatitis C virus modulates programmed cell death pathways.
- To review findings from replicon and recombinant HCV cell culture systems regarding cell death modulation.
Main Methods:
- Review of existing literature on HCV and programmed cell death.
- Analysis of studies utilizing HCV replicon systems.
- Examination of research employing recombinant HCV cell culture models.
Main Results:
- HCV viral proteins are implicated in modulating various cell death mechanisms.
- HCV replication within cell culture systems significantly influences programmed cell death pathways.
- Specific viral proteins and their roles in apoptosis modulation have been identified.
Conclusions:
- Hepatitis C virus actively manipulates host cell death pathways.
- Cell culture systems provide valuable insights into HCV-induced cell death modulation.
- Further research into these mechanisms may reveal novel therapeutic targets.
Abstract:
Hepatitis C virus (HCV), a positive stranded RNA virus of the family Flaviviridae, is the major cause of non-A, non-B hepatitis worldwide. The HCV genome encodes a precursor polyprotein of ~ 3,000 amino acids that is processed co-translationally and post-translationally to give rise to viral structural and non-structural proteins. Nearly all of these viral proteins have been shown to modulate cell death via various mechanisms. In addition, studies using the replicon and recombinant HCV cell culture systems have yield important insights into the modulation of programmed cell death by HCV replication. Here, we summarize current knowledge on the modulation of apoptosis and other programmed cell death pathways by the HCV in these cell culture systems.
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