2011 Fiscal Year Final Research Report
Spatiotemporal regulation of antigen recognition and activation of T cells
Project/Area Number |
19109005
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Research Category |
Grant-in-Aid for Scientific Research (S)
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Allocation Type | Single-year Grants |
Research Field |
Immunology
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Research Institution | The Institute of Physical and Chemical Research |
Principal Investigator |
SAITO Takashi 独立行政法人理化学研究所, 免疫シグナル研究グループ, グループディレクター (50205655)
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Co-Investigator(Kenkyū-buntansha) |
YOKOSUKA Tadashi 独立行政法人理化学研究所, 免疫シグナル研究グループ, 上級研究員 (10359599)
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Project Period (FY) |
2007 – 2011
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Keywords | 免疫シナプス / ミクロクラスター / シグナル伝達 / 抗原認識 / T細胞 / 細胞活性化 / 副刺激 |
Research Abstract |
T cell activation is induced by TCR-microcluster(MC). We clarified the molecules accumulated within MCs, and the relationship with costimulation signals and lipid raft. Lipid raft does not function as the platform and protein interaction within MCs induce activation. CD28-mediated costimulation recruits PKCθ-Carma1 to cSMAC, whereas the inhibitory costimulation receptor CTLA-4 inhibits by accumulating in cSMAC and kicking off CD28-PKCθfrom the cSMAC. TCR-MCs associate with the dynein complex and translocate along microtubules to form cSMAC.
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Research Products
(55 results)
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[Journal Article] CRTAM confers late-stage activation of CD8+T cells to regulate retention within lymph node2009
Author(s)
Takeuchi A, Itoh Y, Takumi A, Ishihara C, Arase N, Yokosuka T, Koseki H, Yamasaki S, Takai Y, Miyoshi J, Ogasawara K, and Saito T.
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Journal Title
J. Immunol
Volume: 183
Pages: 4220-4228
Peer Reviewed
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[Journal Article] C-type lectin Mincle is an activating receptor for pathogenic fungus, Malassezia2009
Author(s)
Yamasaki S, Matsumoto M, Takeuchi O, Matsuzawa T, Ishikawa E, Sakuma M, Tateno H, Uno J, Hirabayashi J, Mikami Y, Takeda K, Akira S, Saito T.
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Journal Title
Proc. Natl. Acad. Sci. USA
Volume: 10
Pages: 1897-1902
Peer Reviewed
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[Presentation] Visualising the dynamics of immune synapse by TIRF2011
Author(s)
Saito, T., Yokosuka, T., Tane-Hashimoto, A., Sakata-Sogawa, K., Tokunaga, M.
Organizer
XXVI Congress of the International Society for Advancement of Cytometry(CYTO2011)
Place of Presentation
Baltimore, MD, USA
Year and Date
2011-05-24
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[Presentation] Mincle is an ITAM-coupled activating receptor that senses damaged cells2008
Author(s)
Yamasaki, S., Ishikawa, E., Sakuma, M., Hara, H., Ogata, K. and Saito, T.
Organizer
The 10th International Symposium on Dendritic Cells
Place of Presentation
神戸
Year and Date
2008-10-03
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