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Updated: Jan 20, 2026
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Synthesis of Zeolites Using the ADOR Assembly-Disassembly-Organization-Reassembly Route
Published on: April 3, 2016
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Forces and constraints controlling podosome assembly and disassembly
Nisha Bte Mohd Rafiq1,2, Gianluca Grenci1,3, Cheng Kai Lim1
1Mechanobiology Institute, National University of Singapore, Singapore 117411, Republic of Singapore.
Summary
Podosomes, crucial for cell migration and invasion, are sensitive to mechanical forces. Myosin-II filaments and membrane tension independently regulate podosome dynamics, revealing their versatile response to cellular cues.
Area of Science:
- Cell Biology
- Mechanobiology
- Cancer Research
Background:
- Podosomes are integrin-mediated adhesions vital for cell migration, matrix degradation, and cancer invasion.
- The influence of mechanical forces on podosome integrity and dynamics remains poorly understood.
- Understanding these mechanical effects is crucial for deciphering cancer cell behavior.
Purpose of the Study:
- To investigate the impact of physical factors on podosome integrity and dynamics.
- To elucidate the roles of myosin-II filaments and membrane tension in podosome regulation.
- To explore how mechanical forces modulate podosome formation and behavior.
Main Methods:
- Studied podosome disassembly induced by myosin-IIA filament assembly.
- Investigated effects of membrane tension using osmotic swelling and deoxycholate treatment.
- Examined podosome response to substrate stretching and microtopographic cues.
- Assessed the role of dynamin-II and clathrin in podosome regulation.
Main Results:
- Podosomes are highly sensitive to myosin-IIA filament assembly and membrane tension.
- Osmotic swelling and substrate stretching reversibly disrupt podosomes.
- Dynamin-II inhibition affects podosomes independently of myosin-II filaments.
- Podosome array formation can occur independently of myosin-II reorganization.
Conclusions:
- Mechanical factors, including myosin-II filaments and membrane tension/sculpting, independently modulate podosome formation and dynamics.
- Podosomes exhibit versatile responses to both intracellular and extracellular mechanical cues.
- This study provides new insights into the mechanobiology of cancer cell invasion.
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