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Dynamin II involves in cell migration and actin formation of NIH3T3 cells
Do-Seon Lim1, Sang-Ryul Kim, Baik-Dong Choi
1Department of Oral Histology & Developmental Biology, School of Dentistry, Chosun University, Gwangju 501-759, Korea.
Journal of Nanoscience and Nanotechnology
|April 25, 2012
Summary
Dynamin II is crucial for NIH3T3 cell migration, associating with myosin II and actin filaments via the Ras/PI3K pathway. This suggests dynamin II
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Dynamin II's role in Ras-mediated signaling and cell migration was previously suggested but lacked definitive evidence.
- Understanding the molecular mechanisms of cell migration is vital for tissue engineering and regenerative medicine.
Purpose of the Study:
- To elucidate the precise role and molecular interactions of dynamin II in NIH3T3 cell migration.
- To investigate the involvement of dynamin II in the Ras/PI3K signaling pathway during cell movement.
Main Methods:
- Utilized Ras-transformed NIH3T3 cells and stimulated with Platelet-Derived Growth Factor (PDGF).
- Employed confocal microscopy and immunofluorescence to assess protein co-localization (dynamin II, myosin II, paxillin, actin).
- Investigated the effect of actin inhibition (Cytochalasin D) on dynamin II-myosin II-actin interactions.
Main Results:
- Dynamin II associates with myosin II, acting as a signaling molecule in NIH3T3 cell migration.
- Dynamin II interacts with the p85 subunit of Phosphatidylinositol 3-kinase (PI3K) within the Ras/PI3K pathway.
- Co-localization of dynamin II with paxillin and actin filaments was observed upon PDGF stimulation.
- Dynamin II-myosin II complex binding to actin was inhibited by Cytochalasin D, indicating actin dependence.
Conclusions:
- Dynamin II is localized in focal adhesions during cell migration and binds to actin filaments.
- Dynamin II plays a significant role in regulating cell attachment and migration.
- Dynamin II is a potential nanomolecule for modulating cell interactions with biomaterials, relevant for implants.
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