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新規アダプタータンパク質STAP-2の免疫シグナルにおける機能

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タイトル: 新規アダプタータンパク質STAP-2の免疫シグナルにおける機能
著者: Sekine, Yuichi 著作を一覧する
キーワード: signal-transducing adaptor protein-2 (STAP-2)
adaptor protein
cytokine
signal transduction
immune system
発行日: 2010年
誌名: Yakugaku Zasshi
巻: 130
号: 6
開始ページ: 769
終了ページ: 775
出版社 DOI: 10.1248/yakushi.130.769
抄録: Signal-transducing adaptor protein-2 (STAP-2) was recently identified as a novel adaptor protein and is a family of STAP adaptor protein and has a variety of functions in cellular signal transductions. Especially STAP-2 has a crucial role in immune systems by controlling cytokine signal transduction. STAP-2 functionally interacts with STAT3 through its YXXQ motif and enhances STAT3 transcriptional activation. In contrast, STAP-2 interacts with STAT5 through its PH and SH2-like domains and decreases STAT5 activity. Importantly, STAP-2 also binds to MyD88 and IKK-α/β and regulates LPS/TLR4 signaling. Moreover, STAP-2 interacts with Epstein-Barr virus-derived LMP1 and modulates LMP1-mediated NF-κB signaling. More importantly, experiments using STAP-2 deficient mice showed that STAP-2 modulated several T-cell functions. T-cells from STAP-2 deficient mice showed enhanced integrin-mediated cell adhesion to fibronectin. Furthermore STAP-2-deficient T-cells show reduced chemotaxis toward SDF-1α. These accumulated evidences indicate that novel adaptor protein STAP-2 plays an important modulator role in both of innate and adaptive immune systems.
資料タイプ: article
URI: http://hdl.handle.net/2115/44421
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 関根 勇一

 

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