Cardiac mechanotransduction from development to disease

Area of Science:

• Cardiovascular Biology
• Mechanobiology
• Cellular Physiology

Background:

• Mechanical forces, including stress and matrix stiffness, are vital for cardiac development and function.
• Mechanotransduction pathways link mechanical stimuli to cellular responses in the heart.

Purpose of the Study:

• To review how cardiac cells sense and respond to mechanical cues.
• To outline signaling pathways involved in cardiac mechanotransduction and disease.
• To highlight the role of mechanosensitive microRNAs in cardiac regulation.

Main Methods:

• Review of existing literature on cardiac mechanobiology.
• Analysis of signaling pathways (RhoA/ROCK, YAP, Ca2+) and their role in mechanical load.
• Discussion of mechanosensors like integrins and ion channels.

Main Results:

• Mechanical cues regulate cardiomyocyte, endothelial cell, and fibroblast functions.
• Pathways like RhoA/ROCK, calcium, and YAP translate mechanical force into cellular phenotypes.
• Hypertension-induced mechanical load promotes cardiac hypertrophy and fibrosis via TGF-β, YAP, and calcineurin signaling.
• Mechanosensitive microRNAs play emerging roles in cardiac processes.

Conclusions:

• Understanding cardiac mechanotransduction is essential for comprehending heart development, homeostasis, and disease.
• Further research mapping mechanical environments and cell-specific responses is needed.
• Insights into mechanobiology can guide novel therapeutic strategies for cardiovascular diseases.