[Hepatocellular carcinoma: molecular biology aspects]

Area of Science:

• Hepatology and Oncology
• Molecular Biology
• Viral Hepatitis Research

Context:

• Chronic liver diseases, including Hepatitis B (HBV) and Hepatitis C (HCV) infections, are major precursors to liver cirrhosis and hepatocellular carcinoma (HCC).
• The precise molecular mechanisms driving hepatocarcinogenesis remain incompletely understood.
• Hepatocellular carcinoma is a significant global health concern, particularly in regions with high prevalence of chronic liver disease.

Purpose:

• To elucidate the molecular events underlying hepatocarcinogenesis in the context of chronic liver diseases.
• To identify key genetic and molecular alterations contributing to the development of liver cancer.
• To inform clinical strategies for preventing and treating hepatocellular carcinoma.

Summary:

• Hepatocellular carcinoma (HCC) appears to develop through a stepwise process initiated by chronic liver disease.
• This process involves liver cell necrosis, inflammation, and regeneration, leading to a high rate of cell division.
• During this regenerative phase, chromosomal DNA rearrangements can activate oncogenes or inactivate tumor suppressor genes, promoting cancer development.
• Viral factors (HBV, HCV), cofactors like alcohol, and aflatoxins may play specific roles in these molecular alterations.

Impact:

• A clearer understanding of hepatocarcinogenesis molecular pathways can guide the development of targeted therapies for liver cancer.
• Implementing preventive and therapeutic measures for chronic liver diseases is essential to reduce the incidence of HCC.
• This research highlights the importance of addressing viral hepatitis and other risk factors to mitigate liver cancer burden worldwide.