End-binding protein 1 controls signal propagation from the T cell receptor

End-binding protein 1 controls signal propagation from the T cell receptor
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DOI:
10.1038/emboj.2012.242
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发表时间:
2012-11-05
期刊:
影响因子:
11.4
通讯作者:
Sanchez-Madrid, Francisco
Sanchez-Madrid, Francisco
中科院分区:
生物学1区
文献类型:
--
作者:
Martin-Cofreces, Noa B.;Baixauli, Francesc;Sanchez-Madrid, Francisco

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微管(MT)在免疫突触(IS)的控制和动力学中的作用仍未解决。在这里,我们表明 T 细胞激活需要由正端特异性蛋白末端结合 1 (EB1) 介导的 MT 生长。 T 细胞受体 (TCR) 复合物与 EB1 的直接相互作用为 EB1 活性促进 TCR 与 IS 处的信号小泡相遇提供了分子基础。 EB1 敲低改变了 IS 处的 TCR 动力学,并阻止 TCR 激活信号传播到 LAT,从而抑制 PLC gamma 1 的激活及其向 IS 的定位。这些结果确定了 EB1 与 TCR 相互作用在控制 TCR 排序中的作用及其与 LAT/PLC gamma 1 信号体的连接。 EMBO 杂志 (2012) 31, 4140-4152。 doi:10.1038/emboj.2012.242; 2012 年 8 月 24 日在线发布
The role of microtubules (MTs) in the control and dynamics of the immune synapse (IS) remains unresolved. Here, we show that T cell activation requires the growth of MTs mediated by the plus-end specific protein end-binding 1 (EB1). A direct interaction of the T cell receptor (TCR) complex with EB1 provides the molecular basis for EB1 activity promoting TCR encounter with signalling vesicles at the IS. EB1 knockdown alters TCR dynamics at the IS and prevents propagation of the TCR activation signal to LAT, thus inhibiting activation of PLC gamma 1 and its localization to the IS. These results identify a role for EB1 interaction with the TCR in controlling TCR sorting and its connection with the LAT/PLC gamma 1 signalosome. The EMBO Journal (2012) 31, 4140-4152. doi: 10.1038/emboj.2012.242; Published online 24 August 2012