T Cell Receptor-Regulated TGF-β Type I Receptor Expression Determines T Cell Quiescence and Activation.
T Cell Receptor-Regulated TGF-β Type I Receptor Expression Determines T Cell Quiescence and Activation.
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DOI:
10.1016/j.immuni.2018.03.025
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发表时间:
2018-04-17
期刊:
影响因子:
32.4
通讯作者:
Chen W
中科院分区:
文献类型:
--
作者:
Tu E;Chia CPZ;Chen W;Zhang D;Park SA;Jin W;Wang D;Alegre ML;Zhang YE;Sun L;Chen W
It is unclear how quiescence is enforced in naïve T cells, but activation by foreign antigens and self-antigens is allowed, despite the presence of inhibitory signals. We showed that active transforming growth factor-beta (TGFβ) signaling was present in naïve T cells and T cell receptor (TCR) engagement reduced TGFβ signaling during T cell activation by downregulating TGFβ type 1 receptor (TβRI) through activation of caspase recruitment domain-containing protein 11 (CARD11) and nuclear factor kappa-light-chain-enhancer of activated B cells (NFκB). TGFβ prevented TCR-mediated TβRI downregulation but this was abrogated by interleukin-6 (IL-6). Mitigation of TCR-mediated TβRI downregulation through overexpression of TβRI in naïve and activated T cells rendered T cells less responsive and suppressed autoimmunity. Naïve T cells in autoimmune patients exhibited reduced TβRI expression and increased TCR-driven proliferation compared to healthy subjects. Thus, TCR-mediated regulation of TβRI-TGFβ signaling acts as a crucial criterion to determine T cell quiescence and activation. It is unclear how quiescence is enforced in naïve T cells. Tu et al. show that TGFβ signaling maintains T cell quiescence, preventing aberrant responses to self-antigens. Strong TCR stimuli reduce TβRI expression and consequently abolish TGFβ signaling in T cells. TCR-mediated TβRI downregulation acts as a “third criterion” to fully activate T cells in addition to the “two-signal” model.
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影响因子:
17.1
作者:
Kasagi, Shimpei;Zhang, Pin;Chen, WanJun
通讯作者:
Chen, WanJun
影响因子:
30.5
作者:
Cortez VS;Ulland TK;Cervantes-Barragan L;Bando JK;Robinette ML;Wang Q;White AJ;Gilfillan S;Cella M;Colonna M
通讯作者:
Colonna M
影响因子:
15.3
作者:
Fahlén, L;Read, S;Gorelik, L;Hurst, SD;Coffman, RL;Flavell, RA;Powrie, F
通讯作者:
Powrie, F
DOI:
10.1084/jem.185.11.1897
发表时间:
1997-06-02
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Boothby MR;Mora AL;Scherer DC;Brockman JA;Ballard DW
通讯作者:
Ballard DW
影响因子:
64.8
作者:
Daniels, Mark A.;Teixeiro, Emma;Palmer, Ed
通讯作者:
Palmer, Ed