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Hydrostatic pressure sensation in cells: integration into the tensegrity model
Kenneth A Myers1, Jerome B Rattner, Nigel G Shrive
1McCaig Centre For Joint Injury & Arthritis Research, 4th floor Heritage Medical Research Building, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.
Biochemistry and Cell Biology = Biochimie Et Biologie Cellulaire
|September 29, 2007
Summary
Hydrostatic pressure (HP) detection in cell biology is unclear. New models suggest HP alters cytoskeletal polymerization, releasing proteins to trigger cellular responses.
Area of Science:
- Cell Biology
- Mechanobiology
- Biophysics
Background:
- Hydrostatic pressure (HP) is a significant mechanical stimulus influencing cell behavior in various tissues.
- Existing mechanotransduction models, like tensegrity, lack detailed explanations for HP detection.
- HP sensitivity is relevant in clinical settings and extreme environments like microgravity.
Purpose of the Study:
- To explore the unclear mechanism of initial hydrostatic pressure (HP) sensation in cell biology.
- To propose a novel model for cellular HP detection.
- To integrate HP sensing with existing mechanotransduction frameworks.
Main Methods:
- Review of existing literature on hydrostatic pressure and cell biology.
- Analysis of in vitro evidence regarding HP effects on the cytoskeleton.
- Theoretical modeling integrating HP effects with tensegrity principles.
Main Results:
- Hydrostatic pressure (HP) directly affects cytoskeletal polymerization dynamics.
- Alterations in the balance of cytoskeletal monomers and polymers are induced by HP.
- This shift in polymerization can trigger cellular responses by releasing or activating associated proteins.
Conclusions:
- A new model proposes that hydrostatic pressure (HP) is sensed via changes in cytoskeletal polymerization.
- This mechanism explains how cells release and activate associated proteins in response to HP.
- The model aligns with tensegrity principles, allowing for tunable cellular HP sensitivity.
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