Longitudinal tracking of neuronal mitochondria delineates PINK1/Parkin-dependent mechanisms of mitochondrial recycling and degradation.
Longitudinal tracking of neuronal mitochondria delineates PINK1/Parkin-dependent mechanisms of mitochondrial recycling and degradation.
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DOI:
10.1126/sciadv.abf6580
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发表时间:
2021-08
期刊:
影响因子:
13.6
通讯作者:
Nakamura K
中科院分区:
文献类型:
--
作者:
Li H;Doric Z;Berthet A;Jorgens DM;Nguyen MK;Hsieh I;Margulis J;Fang R;Debnath J;Sesaki H;Finkbeiner S;Huang E;Nakamura K
Time-lapse imaging delineates the mitochondrial life cycle in neurons regulated by PINK1 and Parkin. Altered mitochondrial quality control and dynamics may contribute to neurodegenerative diseases, including Parkinson’s disease, but we understand little about these processes in neurons. We combined time-lapse microscopy and correlative light and electron microscopy to track individual mitochondria in neurons lacking the fission-promoting protein dynamin-related protein 1 (Drp1) and delineate the kinetics of PINK1-dependent pathways of mitochondrial quality control. Depolarized mitochondria recruit Parkin to the outer mitochondrial membrane, triggering autophagosome formation, rapid lysosomal fusion, and Parkin redistribution. Unexpectedly, these mitolysosomes are dynamic and persist for hours. Some are engulfed by healthy mitochondria, and others are deacidified before bursting. In other cases, Parkin is directly recruited to the matrix of polarized mitochondria. Loss of PINK1 blocks Parkin recruitment, causes LC3 accumulation within mitochondria, and exacerbates Drp1KO toxicity to dopamine neurons. These results define a distinct neuronal mitochondrial life cycle, revealing potential mechanisms of mitochondrial recycling and signaling relevant to neurodegeneration.
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影响因子:
14.8
作者:
Barmada, Sami J.;Serio, Andrea;Arjun, Arpana;Bilican, Bilada;Daub, Aaron;Ando, D. Michael;Tsvetkov, Andrey;Pleiss, Michael;Li, Xingli;Peisach, Daniel;Shaw, Christopher;Chandran, Siddharthan;Finkbeiner, Steven
通讯作者:
Finkbeiner, Steven
影响因子:
13.3
作者:
Jin, Seok Min;Youle, Richard J.
通讯作者:
Youle, Richard J.
DOI:
10.1083/jcb.201507112
发表时间:
2016-03-14
期刊:
The Journal of cell biology
影响因子:
--
作者:
Johnson DE;Ostrowski P;Jaumouillé V;Grinstein S
通讯作者:
Grinstein S
影响因子:
5.3
作者:
Chen, Linan;Xie, Zhiguo;Zhuang, Xiaoxi
通讯作者:
Zhuang, Xiaoxi
影响因子:
13.3
作者:
Itakura, Eisuke;Mizushima, Noboru
通讯作者:
Mizushima, Noboru