E3 ubiquitin ligase Cbl-b suppresses proallergic T cell development and allergic airway inflammation.
E3 ubiquitin ligase Cbl-b suppresses proallergic T cell development and allergic airway inflammation.
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DOI:
10.1016/j.celrep.2014.01.012
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发表时间:
2014-02-27
期刊:
影响因子:
8.8
通讯作者:
Zhang J
中科院分区:
文献类型:
--
作者:
Qiao G;Ying H;Zhao Y;Liang Y;Guo H;Shen H;Li Z;Solway J;Tao E;Chiang YJ;Lipkowitz S;Penninger JM;Langdon WY;Zhang J
E3 ubiquitin ligase Cbl-b has emerged as a gatekeeper that controls the activation threshold of the T cell antigen receptor and maintains the balance between tolerance and autoimmunity. Here, we report that the loss of Cbl-b facilitates T helper 2 (Th2) and Th9 cell differentiation in vitro. In a mouse model of asthma, the absence of Cbl-b results in severe airway inflammation and stronger Th2 and Th9 responses. Mechanistically, Cbl-b selectively associates with Stat6 upon IL-4 ligation and targets Stat6 for ubiquitination and degradation. These processes are heightened in the presence of T cell receptor (TCR)/ CD28 costimulation. Furthermore, we identify K108 and K398 as Stat6 ubiquitination sites. Intriguingly, introducing Stat6 deficiency into Cblb−/− mice abrogates hyper-Th2 responses but only partially attenuates Th9 responses. Therefore, our data reveal a function for Cbl-b in the regulation of Th2 and Th9 cell differentiation.
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影响因子:
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通讯作者:
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