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发表于 2015-11-18 09:34:55
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Tespa1 is involved in late thymocyte development through the regulation of TCR-mediated signaling7 u' v: x+ U- u7 T, Q. V ~8 g5 W
" h( T- g' N, v8 G Di Wang, Mingzhu Zheng, Lei Lei, Jian Ji, Yunliang Yao, Yuanjun Qiu, Lie Ma, Jun Lou, Chuan Ouyang, Xue Zhang, Yuewei He, Jun Chi, Lie Wang, Ying Kuang, Jianli Wang, Xuetao Cao & Linrong Lu
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" c# }% M5 X7 s' ?Signaling via the T cell antigen receptor (TCR) during the CD4+CD8+ double-positive developmental stage determines thymocyte selection and lineage commitment. Here we describe a previously uncharacterized T cell–expressed protein, Tespa1, with critical functions during the positive selection of thymocytes. Tespa1−/− mice had fewer mature thymic CD4+ and CD8+ T cells, which reflected impaired thymocyte development. Tespa1 associated with the TCR signaling components PLC-γ1 and Grb2, and Tespa1 deficiency resulted in attenuated TCR signaling, as reflected by defective activation of the Erk–AP-1 and Ca2+-NFAT pathways. Our findings demonstrate that Tespa1 is a component of the TCR signalosome and is essential for T cell selection and maturation through the regulation of TCR signaling during T cell development.& i+ O5 F: ^8 Z& \
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鲁教授又出好文章了。 |
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发表于 2015-11-18 11:04:50
