Related Experiment Videos
Cellular adhesiveness, contractility, and traction: stick, grip, and slip control
1Department of Anatomy and Cell Biology, University of Toronto, Canada.
Summary
Cells control their movement on surfaces by regulating adhesion and contractility. This allows cells to fine-tune tractional forces for effective translocation across substrata.
Area of Science:
- Cell biology
- Biophysics
- Mechanobiology
Background:
- Cellular translocation over solid substrata is crucial for tissue development and function.
- This movement relies on motive force generated by intracellular actomyosin contractility.
- The cell's contractile machinery connects directly to the cell surface, influencing traction.
Purpose of the Study:
- To explore the local regulation of cell surface adhesiveness and intracellular contractility.
- To understand how cells modulate tractional forces for effective movement.
- To investigate how cells choose substrata and apply traction accordingly.
Main Methods:
- Discussion of local (subcellular) regulation mechanisms.
- Speculative analysis based on current understanding of cell mechanics.
- Review of factors influencing cell-substratum interactions.
Main Results:
- Cells actively regulate surface adhesiveness (stick), contractility (grip), and traction (slip).
- Adhesiveness is a key mechanism for fine-tuning tractional forces.
- Subcellular regulation allows cells to control force generation and application.
Conclusions:
- Cellular movement is a dynamic process involving coordinated regulation of adhesion and contractility.
- Cells possess sophisticated mechanisms to adapt their traction strategies based on substratum properties.
- Understanding these processes is vital for fields like tissue engineering and regenerative medicine.