The c-SMAC: sorting it all out (or in).

The c-SMAC: sorting it all out (or in).
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DOI:
10.1083/jcb.200503032
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发表时间:
2005-07-18
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Shaw AS
Shaw AS
中科院分区:
其他
文献类型:
--
作者:
Lin J;Miller MJ;Shaw AS

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T细胞整合和转导必要的关键信号,以建立适当的免疫反应。要做到这一点,它们既依赖于分泌因子,也依赖于细胞间的物理接触。很多注意力都集中在T细胞和抗原呈递细胞之间接触区域的蛋白质组织上,即免疫突触。体外实验表明,蛋白质在这个接触区域内分成两个不同的区域,一个被称为c-SMAC的中心区域,T细胞受体和相关信号分子在那里富集,另一个被称为p-SMAC的外围区域包含LFA-1和支架蛋白talin。这些结构是否在体内形成以及它们如何在T细胞活化中起作用仍然是人们非常感兴趣的问题。在此,我们回顾了最近发表的研究成果,并提出了c-SMAC在T细胞激活中的几种可能功能。
T cells integrate and transduce the key signals necessary to mount an appropriate immune response. To do this, they rely on both secreted factors as well as physical cell–cell contact. Much attention has focused on the organization of proteins at the contact area between a T cell and an antigen-presenting cell, known as the immunological synapse. It has been shown in vitro that proteins segregate into two distinct regions within this contact area, a central area referred to as the c-SMAC, where the T cell receptor and associated signaling molecules are enriched, and a peripheral region called the p-SMAC containing LFA-1 and the scaffolding protein talin. Whether or not these structures form in vivo and how they function in T cell activation remain issues of great interest. Here, we review recently published work and propose several possible functions for the role of the c-SMAC in T cell activation.
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