Chaperone-mediated autophagy regulates T cell responses through targeted degradation of negative regulators of T cell activation.
Chaperone-mediated autophagy regulates T cell responses through targeted degradation of negative regulators of T cell activation.
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DOI:
10.1038/ni.3003
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发表时间:
2014-11
影响因子:
30.5
通讯作者:
Macian, Fernando
中科院分区:
文献类型:
--
作者:
Valdor, Rut;Mocholi, Enric;Botbol, Yair;Guerrero-Ros, Ignacio;Chandra, Dinesh;Koga, Hiroshi;Gravekamp, Claudia;Cuervo, Ana Maria;Macian, Fernando
Chaperone mediated autophagy (CMA) targets soluble proteins for lysosomal degradation. Here we show that CMA is activated in T cells in response to T cell receptor (TCR) engagement, which induces the expression of the lysosomal CMA receptor, LAMP-2A. In activated T cells, CMA targets the ubiquitin ligase Itch and the calcineurin inhibitor Rcan-1 for degradation to maintain activation-induced responses. Consequently, deletion of Lamp2a in T cells causes deficient in vivo responses to immunization or Listeria infection. Impaired CMA activity also occurs in T cells with age, which negatively impacts their function. Restoration of LAMP-2A in aged T cells results in enhancement of activation-induced responses. Our findings define a role for CMA in the regulation of T cell activation through the targeted degradation of negative regulators of T cell activation.
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影响因子:
16.6
作者:
通讯作者:
--
DOI:
10.1083/jcb.137.4.825
发表时间:
1997-05-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Agarraberes FA;Terlecky SR;Dice JF
通讯作者:
Dice JF
影响因子:
56.9
作者:
CHIANG, HL;TERLECKY, SR;DICE, JF
通讯作者:
DICE, JF
影响因子:
3.3
作者:
Cuervo, AM;Hu, W;Dice, JF
通讯作者:
Dice, JF
影响因子:
11.4
作者:
Kaushik, Susmita;Massey, Ashish C.;Cuervo, Ana Maria
通讯作者:
Cuervo, Ana Maria