Tensegrity and mechanoregulation: from skeleton to cytoskeleton.

Area of Science:

• Biomechanics
• Cellular Mechanotransduction
• Structural Biology

Background:

• Mechanical stresses on an organism are transmitted to cells.
• Understanding this transmission is key to cellular response.
• The musculoskeletal system's stability principles offer insights.

Purpose of the Study:

• To explain how whole-body mechanical stresses reach individual cells.
• To elucidate the biochemical response triggered by these stresses.
• To explore the role of tensegrity in this process.

Main Methods:

• Describing fundamental design principles for musculoskeletal system stabilization.
• Identifying tensegrity as a key architectural form embodying these principles.
• Analyzing the role of continuous tension, local compression, prestress, and triangulation.

Main Results:

• Tensegrity structures utilize continuous tension and local compression for stability.
• A hierarchy of tensegrity networks in organisms optimizes efficiency and couples parts to the whole.
• Macroscale stresses induce structural changes at cellular and molecular levels.

Conclusions:

• Tensegrity architecture concentrates stress on signal-transducing molecules linked to cell surface and cytoskeleton.
• Mechanochemical transduction occurs via stress-induced changes in molecular mechanics, thermodynamics, and kinetics.
• Cellular stress response is regulated by altering cellular prestress, akin to muscular tone influencing musculoskeletal coordination.