Decoding Cardiac Maturation Program: Insights from RNA Splicing Regulation.

Area of Science:

• Cardiovascular Biology
• Molecular Cardiology
• Developmental Biology

Background:

• Postnatal cardiomyocyte maturation is crucial for mammalian heart development, involving complex phenotypic changes.
• While maturation hallmarks are known, the underlying molecular mechanisms remain incompletely understood.

Purpose of the Study:

• To review recent findings on post-transcriptional regulation in fetal-to-adult cardiomyocyte transition.
• To explore the clinical implications for cardiac diseases and regenerative medicine.

Main Methods:

• Literature review of recent research on cardiomyocyte maturation.
• Analysis of post-transcriptional regulatory mechanisms, including RNA alternative splicing and RNA-binding proteins.

Main Results:

• Cardiac maturation involves distinct molecular regulations compared to embryonic development.
• RNA alternative splicing and isoform switching are key post-transcriptional events during maturation.
• These processes refine cardiomyocyte structure, physiology, metabolism, and proliferation.

Conclusions:

• Post-transcriptional regulation, especially RNA splicing, is vital for fetal-to-adult cardiomyocyte transition.
• Understanding these mechanisms provides a framework for cardiac development, disease, and regeneration.
• Key molecular players in this transition are critical for future therapeutic strategies.