A novel pathway down-modulating T cell activation involves HPK-1-dependent recruitment of 14-3-3 proteins on SLP-76.
A novel pathway down-modulating T cell activation involves HPK-1-dependent recruitment of 14-3-3 proteins on SLP-76.
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下调 T 细胞激活的新途径涉及 HPK-1 依赖性在 SLP-76 上招募 14-3-3 蛋白。
DOI:
10.1084/jem.20062066
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发表时间:
2007-03-19
影响因子:
15.3
通讯作者:
Acuto, Oreste
中科院分区:
文献类型:
--
作者:
Di Bartolo, Vincenzo;Montagne, Benjamin;Salek, Mogjiborahman;Jungwirth, Britta;Carrette, Florent;Fourtane, Julien;Sol-Foulon, Nathalie;Michel, Frederique;Schwartz, Olivier;Lehmann, Wolf D.;Acuto, Oreste
The SH2 domain–containing leukocyte protein of 76 kD (SLP-76) is a pivotal element of the signaling machinery controlling T cell receptor (TCR)-mediated activation. Here, we identify 14-3-3ɛ and ζ proteins as SLP-76 binding partners. This interaction was induced by TCR ligation and required phosphorylation of SLP-76 at serine 376. Ribonucleic acid interference and in vitro phosphorylation experiments showed that serine 376 is the target of the hematopoietic progenitor kinase 1 (HPK-1). Interestingly, either S376A mutation or HPK-1 knockdown resulted in increased TCR-induced tyrosine phosphorylation of SLP-76 and phospholipase C-γ1. Moreover, an SLP-76–S376A mutant induced higher interleukin 2 gene transcription than wild-type SLP-76. These data reveal a novel negative feedback loop involving HPK-1–dependent serine phosphorylation of SLP-76 and 14-3-3 protein recruitment, which tunes T cell activation.
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影响因子:
4.4
作者:
Houtman, JCD;Houghtling, RA;Samelson, LE
通讯作者:
Samelson, LE
影响因子:
11.4
作者:
Kiefer, F;Tibbles, LA;Iscove, NN
通讯作者:
Iscove, NN
影响因子:
32.4
作者:
Liou, J;Kiefer, F;Weiss, A
通讯作者:
Weiss, A
影响因子:
4.4
作者:
Marquez, ME;Ellmeier, W;Di Bartolo, V
通讯作者:
Di Bartolo, V
DOI:
10.1073/pnas.92.22.10142
发表时间:
1995-10-24
影响因子:
11.1
作者:
BONNEFOYBERARD, N;LIU, YC;ALTMAN, A
通讯作者:
ALTMAN, A