The role of post-translational modifications in cardiac hypertrophy

Area of Science:

• Cardiovascular Biology
• Molecular Biology
• Biochemistry

Background:

• Pathological cardiac hypertrophy is characterized by excessive protein synthesis and cardiomyocyte enlargement, significantly increasing the risk of heart failure and mortality.
• This condition is a major contributor to cardiovascular diseases globally.
• Understanding the molecular mechanisms driving cardiac hypertrophy is critical for developing effective treatments.

Purpose of the Study:

• To review the critical roles of various post-translational modifications (PTMs) in the development of pathological cardiac hypertrophy.
• To explore the potential of PTMs as therapeutic targets for preventing or treating cardiac hypertrophy and related cardiovascular conditions.

Main Methods:

• This review synthesizes current research on PTMs in cardiac hypertrophy.
• It examines how PTMs like phosphorylation, ubiquitination, SUMOylation, O-GlcNAcylation, methylation, and acetylation influence myocardial responses.
• The review discusses the impact of PTMs on protein interactions, stability, degradation, cellular localization, and signaling pathways.

Main Results:

• Post-translational modifications (PTMs) are key regulators of pathological cardiac hypertrophy.
• These modifications modulate crucial cellular processes including protein interactions, stability, and signal transduction in response to hypertrophic stimuli.
• Specific PTMs identified include phosphorylation, ubiquitination, SUMOylation, O-GlcNAcylation, methylation, and acetylation.

Conclusions:

• PTMs play a pivotal role in mediating the complex pathways of pathological cardiac hypertrophy.
• Targeting specific PTMs presents a promising avenue for novel therapeutic interventions against cardiac hypertrophy and heart failure.