2009 Fiscal Year Final Research Report
Single-molecule imaging analysis of cell structural reorganization processes downstream of G protein signaling
Project/Area Number |
17079004
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Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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Allocation Type | Single-year Grants |
Review Section |
Biological Sciences
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Research Institution | Kyoto University |
Principal Investigator |
WATANABE Naoki Kyoto University, 医学研究科, 准教授 (80303816)
|
Project Period (FY) |
2005 – 2009
|
Keywords | 細胞・組織 / 一分子計測 / G蛋白質 / フォルミンファミリー / Rhoファミリー |
Research Abstract |
Using fluorescence single-molecule imaging which directly visualizes remodeling processes of the actin cytoskeleton, this research project has revealed a novel actin polymer regeneration mechanism by which an increase in the cellular monomeric actin concentration provokes rapid actin nucleation by Formin homology proteins. This project has also quantitatively proved the frequent actin filament disruption in the cell. In addition, through various types of cell imaging analysis, the roles of Rho family GTPases in cell migration and inhibitor-induced conformational regulation of a protein kinase, Abl, have been elucidated.
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[Journal Article] Cdc42 and Rac family GTPases regulate mode and speed but not direction of primary fibroblast migration during PDGF-dependent chemotaxis.2009
Author(s)
Monypenny, J., Zicha, D., Higashida, C., Oceguera-Yanez, F., Narumiya, S., Watanabe, N.
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Journal Title
Mol. Cell. Biol. 29
Pages: 2730-2747
Peer Reviewed
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[Journal Article] Imatinib mesylate (STI571)-induced cell edge translocation of kinase-active and kinase-defective Abelson kinase: requirements of myristoylation and src homology 3 domain.2009
Author(s)
Fujita, A., Shishido, T., Yuan, Y., Inamoto, E., Narumiya, S., Watanabe, N.
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Journal Title
Mol. Pharmacol 75
Pages: 75-84
Peer Reviewed
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[Journal Article] G-actin regulates rapid induction of actin nucleation by mDia1 to restore cellular actin polymers.2008
Author(s)
Higashida, C., Suetsugu, S., Tsuji, T., Monypenny, J., Narumiya, S., Watanabe, N.
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Journal Title
J. Cell Sci. 121
Pages: 3403-3412
Peer Reviewed
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[Journal Article] Shootin1 interacts with actin retrograde flow and L1-CAM to promote axon outgrowth.2008
Author(s)
Shimada, T., Toriyama, M., Uemura, K., Kamiguchi, H., Sugiura, T., Watanabe, N., Inagaki, N.
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Journal Title
J. Cell Biol. 181
Pages: 817-829
Peer Reviewed
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[Journal Article] mDia2 induces the actin scaffold for the contractile ring and stabilizes its position during cytokinesis in NIH 3T3 cells.2008
Author(s)
Watanabe, S., Ando, Y., Yasuda, S., Hosoya, H., Watanabe, N., Ishizaki, T., Narumiya, S.
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Journal Title
Mol. Biol. Cell 19
Pages: 2328-2338
Peer Reviewed
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[Journal Article] Actin turnover-dependent fast dissociation of capping protein in the dendritic nucleation actin network: evidence of frequent filament severing.2006
Author(s)
Miyoshi, T., Tsuji, T., Higashida, C., Hertzog, M., Fujita, A., Narumiya, S., Scita, G., Watanabe, N.
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Journal Title
J. Cell Biol. 175
Pages: 947-955
Peer Reviewed
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