Emerging Biomarker Potential of Extracellular Vesicle-Enclosed MicroRNAs for Liver Fibrosis Detection

Area of Science:

• Biochemistry
• Molecular Biology
• Hepatology

Background:

• Liver fibrosis results from sustained liver damage, progressing to cirrhosis, liver failure, or cancer.
• Hepatocellular and cholestatic injuries trigger fibrosis through conserved pathways like inflammation and extracellular matrix deposition.
• Non-invasive biomarkers are crucial for early detection and management of liver fibrosis.

Purpose of the Study:

• To review the role of extracellular vesicle (EV)-associated microRNAs (miRNAs) in liver fibrosis.
• To highlight key miRNA candidates in hepatocellular and cholestatic liver injury.
• To discuss the clinical potential of EV-miRNAs as diagnostic and prognostic biomarkers.

Main Methods:

• Literature review focusing on extracellular vesicles and microRNAs in liver fibrosis.
• Analysis of conserved biological processes in liver fibrosis progression.
• Examination of specific liver conditions including MAFLD/MASH, PSC, PBC, and biliary atresia.

Main Results:

• Extracellular vesicles (EVs) contain stable, disease-specific microRNAs (miRNAs) implicated in fibrogenic signaling.
• EV-miRNAs are involved in pathways common to both hepatocellular and cholestatic liver injury.
• Specific miRNAs show potential as biomarkers for various liver fibrotic conditions.

Conclusions:

• EV-associated miRNAs represent a promising avenue for non-invasive biomarker development in liver fibrosis.
• These biomarkers could aid in early diagnosis, prognosis, and monitoring of liver diseases.
• Further research is warranted to validate EV-miRNAs for clinical application in liver fibrosis.