The Translational Bridge between Inflammation and Hepatocarcinogenesis

Area of Science:

• Hepatology and molecular biology
• Cancer research
• Immunology

Background:

• Hepatitis, driven by viral infections, alcohol, or autoimmune factors, can lead to liver cirrhosis and hepatocellular carcinoma (HCC).
• Understanding the mechanisms driving inflammatory liver diseases is crucial for effective treatment strategies.
• Aberrant expression of eukaryotic translation initiation factors (eIFs) is observed in HCC, suggesting their involvement in disease progression.

Purpose of the Study:

• To review inflammatory liver diseases and their driving mechanisms.
• To highlight the role of the translational machinery, particularly eIFs, in hepatitis and HCC.
• To identify knowledge gaps regarding specific eIF functions in liver disease.

Main Methods:

• Literature review of inflammatory liver diseases (acute liver failure, viral hepatitis, alcoholic/non-alcoholic steatohepatitis, autoimmune hepatitis).
• Analysis of external factors (alcohol, viruses, nutrition) and intrinsic factors (genetics, immune tolerance).
• Examination of the translational machinery, focusing on eIFs and mTOR pathway proteins in precancerous lesions and HCC.

Main Results:

• Identified key drivers of inflammatory liver diseases, including viral infections, alcohol abuse, and genetic predisposition.
• Highlighted alterations in the translational machinery, specifically eIFs and mTOR pathway proteins, in precancerous lesions and HCC.
• Noted specific eIFs with distinct roles and aberrant expression patterns in HCC.

Conclusions:

• The translational machinery, especially eIFs, plays a significant role in the pathogenesis of inflammatory liver diseases and HCC.
• Alterations in eIFs are present early in precancerous lesions, indicating potential as biomarkers or therapeutic targets.
• Further research into the specific functions of individual eIF proteins is needed for improved understanding and treatment of HCC and antecedent liver diseases.