Disruption of Atg7-dependent autophagy causes electromotility disturbances, outer hair cell loss, and deafness in mice.
Disruption of Atg7-dependent autophagy causes electromotility disturbances, outer hair cell loss, and deafness in mice.
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Atg7 依赖性自噬的破坏会导致小鼠电动性紊乱、外毛细胞丢失和耳聋。
DOI:
10.1038/s41419-020-03110-8
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发表时间:
2020-10-24
影响因子:
9
通讯作者:
Gao X
中科院分区:
文献类型:
--
作者:
Zhou H;Qian X;Xu N;Zhang S;Zhu G;Zhang Y;Liu D;Cheng C;Zhu X;Liu Y;Lu L;Tang J;Chai R;Gao X
Atg7 is an indispensable factor that plays a role in canonical nonselective autophagy. Here we show that genetic ablation of Atg7 in outer hair cells (OHCs) in mice caused stereocilium damage, somatic electromotility disturbances, and presynaptic ribbon degeneration over time, which led to the gradual wholesale loss of OHCs and subsequent early-onset profound hearing loss. Impaired autophagy disrupted OHC mitochondrial function and triggered the accumulation of dysfunctional mitochondria that would otherwise be eliminated in a timely manner. Atg7-independent autophagy/mitophagy processes could not compensate for Atg7 deficiency and failed to rescue the terminally differentiated, non-proliferating OHCs. Our results show that OHCs orchestrate intricate nonselective and selective autophagic/mitophagy pathways working in concert to maintain cellular homeostasis. Overall, our results demonstrate that Atg7-dependent autophagy plays a pivotal cytoprotective role in preserving OHCs and maintaining hearing function.
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影响因子:
5.3
作者:
Dumont, RA;Lins, U;Gillespie, PG
通讯作者:
Gillespie, PG
影响因子:
5.6
作者:
Huang, Chih-Yang;Kuo, Wei-Wen;Huang, Chih-Yang
通讯作者:
Huang, Chih-Yang
影响因子:
9.2
作者:
Gale, JE;Piazza, V;Mammano, F
通讯作者:
Mammano, F
影响因子:
2.4
作者:
Liberman, MC;Zuo, J;Guinan, JJ
通讯作者:
Guinan, JJ
DOI:
10.1083/jcb.200412022
发表时间:
2005-05-09
期刊:
The Journal of cell biology
影响因子:
--
作者:
Komatsu M;Waguri S;Ueno T;Iwata J;Murata S;Tanida I;Ezaki J;Mizushima N;Ohsumi Y;Uchiyama Y;Kominami E;Tanaka K;Chiba T
通讯作者:
Chiba T