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A Competent Hepatocyte Model Examining Hepatitis B Virus Entry through Sodium Taurocholate Cotransporting Polypeptide as a Therapeutic Target
Published on: May 10, 2022
Bile acids increase hepatitis B virus gene expression and inhibit interferon-alpha activity
Hye Young Kim1, Hyun Kook Cho, Yung Hyun Choi
1Department of Molecular Biology, College of Natural Sciences, Pusan National University, Pusan, South Korea.
The FEBS Journal
|May 25, 2010
Summary
Bile acids boost Hepatitis B virus (HBV) gene expression in liver cells by activating specific signaling pathways. This finding reveals a new mechanism that counteracts antiviral treatments like interferon-alpha.
Area of Science:
- Hepatology
- Virology
- Molecular Biology
Background:
- Hepatitis B virus (HBV) replication is regulated by transcription factors, but the role of metabolic events is unclear.
- Elevated bile acid levels in the liver can occur in choleostatic liver diseases and with high dietary cholesterol.
Purpose of the Study:
- To investigate the impact of bile acid metabolism on Hepatitis B virus (HBV) gene expression.
- To elucidate the molecular mechanisms underlying bile acid-mediated regulation of HBV.
Main Methods:
- Experiments were conducted using hepatic cell lines.
- Key signaling pathways and nuclear receptors involved in bile acid regulation were assessed.
Main Results:
- Bile acids were found to significantly promote HBV transcription and gene expression.
- The farnesoid X receptor alpha and JNK/c-Jun pathway were identified as mediators of this effect.
- The orphan nuclear receptor small heterodimer partner protein also plays a role.
Conclusions:
- Bile acids enhance HBV gene expression in liver cells.
- This promotion of HBV replication by bile acids can interfere with the efficacy of interferon-alpha therapy.
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