Hepatitis B and C virus hepatocarcinogenesis: lessons learned and future challenges

Area of Science:

• Hepatology and Oncology
• Viral Hepatitis Pathogenesis

Background:

• Hepatocellular carcinoma (HCC) is a leading global cancer, with 80% of cases associated with chronic hepatitis B (HBV) or hepatitis C (HCV) infections.
• Chronic HBV and HCV infections induce similar alterations in hepatocyte physiology, suggesting shared mechanisms in HCC development.

Purpose of the Study:

• To review current understanding of molecular mechanisms linking HBV and HCV infections to HCC.
• To discuss challenges in defining these mechanisms and identify areas for future research.

Main Methods:

• Literature review of studies on HBV, HCV, and HCC molecular biology.
• Analysis of cellular signal transduction pathways altered by HBV and HCV.
• Examination of evidence linking inflammatory responses, hepatocyte turnover, and viral proteins to hepatocyte transformation.

Main Results:

• Significant progress has been made in understanding HBV and HCV molecular biology and associated signaling pathways.
• Evidence suggests that inflammation, hepatocyte destruction/regeneration, and viral protein activity contribute to HCC development.
• Precise molecular links between HBV/HCV and HCC remain incompletely understood.

Conclusions:

• HBV and HCV infections are strongly implicated in HCC development through complex molecular pathways.
• Further research is needed to fully elucidate the mechanisms underlying HBV- and HCV-associated HCC.
• Understanding these mechanisms is crucial for developing targeted therapies and prevention strategies.