Long noncoding RNA H19 in liver development and disease

Area of Science:

• Molecular Biology
• Hepatology
• Genetics

Background:

• Liver disease causes over 2 million deaths annually, with MASLD and ALD being major contributors.
• Diet and alcohol drive liver pathologies like steatosis, fibrosis, cirrhosis, and hepatocellular carcinoma.
• Novel therapies are urgently needed due to limited treatment options for liver damage.

Purpose of the Study:

• To review the multifaceted roles of the H19 gene in liver development.
• To summarize H19's involvement in liver diseases, including fatty liver, fibrosis, and hepatocellular carcinoma.
• To explore H19's regulatory functions in metabolism, fibrosis, cell cycle, and chromatin.

Main Methods:

• Literature review of studies on H19 gene function in liver development and disease.
• Analysis of H19's interactions with proteins, coding RNAs, and non-coding RNAs.
• Summary of H19's epigenetic regulation and impact on liver pathologies.

Main Results:

• H19 is essential for embryonic development and neonatal liver maturation.
• H19 re-expression in adult livers drives lipogenesis, fibrosis, and maintains tumor cell proliferation.
• H19 interacts with numerous molecules regulating metabolism, fibrosis, cell cycle, and chromatin.

Conclusions:

• H19 plays a dual role, critical for liver development but pathogenic in adult liver disease.
• Understanding H19's complex functions is key to developing new therapeutic strategies for liver diseases.
• Targeting H19 may offer a novel approach to treat metabolic dysfunction-associated steatotic liver disease and hepatocellular carcinoma.