Phosphorylation of LAMP2A by p38 MAPK couples ER stress to chaperone-mediated autophagy.
Phosphorylation of LAMP2A by p38 MAPK couples ER stress to chaperone-mediated autophagy.
复制标题
p38 MAPK 磷酸化 LAMP2A 将 ER 应激与分子伴侣介导的自噬结合起来
DOI:
10.1038/s41467-017-01609-x
复制
发表时间:
2017-11-24
影响因子:
16.6
通讯作者:
Mao Z
中科院分区:
文献类型:
--
作者:
Li W;Zhu J;Dou J;She H;Tao K;Xu H;Yang Q;Mao Z
Endoplasmic reticulum (ER) and lysosomes coordinate a network of key cellular processes including unfolded protein response (UPR) and autophagy in response to stress. How ER stress is signaled to lysosomes remains elusive. Here we find that ER disturbance activates chaperone-mediated autophagy (CMA). ER stressors lead to a PERK-dependent activation and recruitment of MKK4 to lysosomes, activating p38 MAPK at lysosomes. Lysosomal p38 MAPK directly phosphorylates the CMA receptor LAMP2A at T211 and T213, which causes its membrane accumulation and active conformational change, activating CMA. Loss of ER stress-induced CMA activation sensitizes cells to ER stress-induced death. Neurotoxins associated with Parkinson’s disease fully engages ER-p38 MAPK–CMA pathway in the mouse brain and uncoupling it results in a greater loss of SNc dopaminergic neurons. This work identifies the coupling of ER and CMA as a critical regulatory axis fundamental for physiological and pathological stress response.
登录
查看更多内容
影响因子:
5.3
作者:
Bandyopadhyay, Urmi;Kaushik, Susmita;Cuervo, Ana Maria
通讯作者:
Cuervo, Ana Maria
影响因子:
16
作者:
Kroemer G;Mariño G;Levine B
通讯作者:
Levine B
影响因子:
--
作者:
Alvarez-Erviti, Lydia;Rodriguez-Oroz, Maria C.;Schapira, Anthony H. V.
通讯作者:
Schapira, Anthony H. V.
影响因子:
3.4
作者:
Johnston, CJ;Williams, JP;Finkelstein, JN
通讯作者:
Finkelstein, JN
影响因子:
64.8
作者:
Calfon, M;Zeng, HQ;Ron, D
通讯作者:
Ron, D