T cell receptor internalization from the immunological synapse is mediated by TC21 and RhoG GTPase-dependent phagocytosis.
T cell receptor internalization from the immunological synapse is mediated by TC21 and RhoG GTPase-dependent phagocytosis.
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TC21和RHOG GTPase依赖性吞噬作用介导了免疫突触的T细胞受体内在化。
DOI:
10.1016/j.immuni.2011.06.003
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发表时间:
2011-08-26
期刊:
影响因子:
32.4
通讯作者:
Alarcón B
中科院分区:
文献类型:
--
作者:
Martínez-Martín N;Fernández-Arenas E;Cemerski S;Delgado P;Turner M;Heuser J;Irvine DJ;Huang B;Bustelo XR;Shaw A;Alarcón B
The immunological synapse (IS) serves a dual role for sustained T cell receptor (TCR) signaling and for TCR downregulation. TC21 (Rras2) is a RRas subfamily GTPase that constitutively associates with the TCR and is implicated in tonic TCR signaling by activating phosphatidylinositol 3-kinase. In this study, we demonstrate that TC21 both co-translocates with the TCR to the IS and is necessary for TCR internalization from the IS through a mechanism dependent on RhoG, a small GTPase previously been associated with phagocytosis. Indeed, we found that the TCR triggers T cells to phagocytose 1-6 μm beads through a TC21- and RhoG-dependent pathway. We further show that TC21 and RhoG are necessary for the TCR-promoted uptake of major histocompatibility complex (MHC) from antigen presenting cells. Therefore, TC21- and RhoG-dependence underlie the existence of a common phagocytic mechanism that drives TCR internalization from the IS together with its peptide-MHC ligand.
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DOI:
10.1084/jem.191.7.1137
发表时间:
2000-04-03
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Hwang I;Huang JF;Kishimoto H;Brunmark A;Peterson PA;Jackson MR;Surh CD;Cai Z;Sprent J
通讯作者:
Sprent J
DOI:
10.1073/pnas.96.4.1547
发表时间:
1999-02-16
影响因子:
11.1
作者:
Fernández-Miguel, G;Alarcón, B;de la Hera, A
通讯作者:
de la Hera, A
影响因子:
32.4
作者:
Cemerski, Saso;Das, Jayajit;Shaw, Andrey S.
通讯作者:
Shaw, Andrey S.
影响因子:
21.3
作者:
Glebov, OO;Nichols, BJ
通讯作者:
Nichols, BJ
影响因子:
32.4
作者:
Das, V;Nal, B;Alcover, A
通讯作者:
Alcover, A