The skeletal muscle fiber: a mechanically sensitive cell

Area of Science:

• Muscle physiology
• Cellular mechanobiology
• Exercise science

Background:

• Skeletal muscle plasticity is primarily influenced by physical activity.
• Past research focused on endocrine and paracrine signaling in muscle adaptation.
• Mechanotransduction, the cellular response to mechanical stimuli, is less understood in muscle.

Purpose of the Study:

• To review the biophysical and biochemical aspects of mechanotransduction in skeletal muscle.
• To explore how exercise influences mechanotransducing signaling pathways.
• To highlight the importance of mechanotransduction in muscle-related diseases.

Main Methods:

• Literature review of biophysical and biochemical mechanotransduction.
• Analysis of existing research on mechanical stimuli and cellular responses.
• Synthesis of findings on exercise's role in mechanotransduction.

Main Results:

• Mechanotransduction involves a continuous physical link from the extracellular matrix to the nuclear matrix, regulating gene expression.
• Mechanical stimuli directly impact cytoplasmic signaling, influencing oxidative adaptations, muscle size, and integrity.
• Limited research currently exists on exercise's specific role in muscle mechanotransduction.

Conclusions:

• Understanding mechanotransduction is vital for addressing muscle-related diseases.
• Exercise likely plays a significant role in modulating mechanotransduction pathways.
• Further research into exercise-mediated mechanotransduction is warranted for therapeutic strategies.