Liver fibrogenesis: un update on established and emerging basic concepts

Area of Science:

• Hepatology and Gastroenterology
• Cell Biology
• Molecular Medicine

Background:

• Liver fibrogenesis is a complex process of extracellular matrix (ECM) deposition during chronic liver injury.
• This process, alongside inflammation, is central to the progression of chronic liver diseases (CLD) regardless of cause.

Purpose of the Study:

• To provide an updated overview of liver fibrogenesis and its role in CLD.
• To discuss established and emerging mechanisms promoting CLD progression.
• To highlight key factors including cholangiopathies, genetic/epigenetic influences, and hypoxia.

Main Methods:

• Review of existing literature on liver fibrogenesis and CLD.
• Synthesis of current understanding of cellular roles (myofibroblasts, macrophages).
• Analysis of emerging factors and mediators in disease progression.

Main Results:

• Identified myofibroblasts and macrophages as key hepatic cell populations in CLD.
• Highlighted the significant role of ECM deposition in liver fibrosis.
• Underscored emerging factors including cholangiopathies, genetic/epigenetic alterations, hypoxia, and hypoxia-inducible factors (HIFs).

Conclusions:

• Liver fibrogenesis is a critical determinant of CLD progression.
• Understanding cellular and molecular mechanisms is vital for therapeutic strategies.
• Emerging factors represent promising targets for future research and treatment of CLD.