Impaired Mitochondrial Dynamics and Mitophagy in Neuronal Models of Tuberous Sclerosis Complex.
Impaired Mitochondrial Dynamics and Mitophagy in Neuronal Models of Tuberous Sclerosis Complex.
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结节性硬化症复合物神经元模型中的线粒体动力学和线粒体受损。
DOI:
10.1016/j.celrep.2016.09.054
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发表时间:
2016-10-18
期刊:
影响因子:
8.8
通讯作者:
Sahin M
中科院分区:
文献类型:
--
作者:
Ebrahimi-Fakhari D;Saffari A;Wahlster L;Di Nardo A;Turner D;Lewis TL Jr;Conrad C;Rothberg JM;Lipton JO;Kölker S;Hoffmann GF;Han MJ;Polleux F;Sahin M
Tuberous Sclerosis Complex (TSC) is a neurodevelopmental disease caused by TSC1 or TSC2 mutations and subsequent activation of the mTORC1 kinase. Upon mTORC1 activation, anabolic metabolism, which requires mitochondria, is induced, yet at the same time the principal pathway for mitochondrial turnover, autophagy, is compromised. How mTORC1 activation impacts mitochondrial turnover in neurons remains unknown. Here we demonstrate impaired mitochondrial homeostasis in neuronal in vitro and in vivo models of TSC. We find that Tsc1/2-deficient neurons accumulate mitochondria in cell bodies but are depleted of axonal mitochondria, including those supporting presynaptic sites. Axonal and global mitophagy of damaged mitochondria is impaired, suggesting that decreased turnover may act upstream of impaired mitochondrial metabolism. Importantly, blocking mTORC1 or inducing mTOR-independent autophagy restores mitochondrial homeostasis. Our study clarifies the complex relationship between the TSC-mTORC1 pathway, autophagy and mitophagy, and defines mitochondrial homeostasis as a therapeutic target for TSC and related diseases.
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影响因子:
3.7
作者:
Koyanagi M;Asahara S;Matsuda T;Hashimoto N;Shigeyama Y;Shibutani Y;Kanno A;Fuchita M;Mikami T;Hosooka T;Inoue H;Matsumoto M;Koike M;Uchiyama Y;Noda T;Seino S;Kasuga M;Kido Y
通讯作者:
Kido Y
DOI:
10.1083/jcb.201401070
发表时间:
2014-09-01
期刊:
The Journal of cell biology
影响因子:
--
作者:
Ashrafi G;Schlehe JS;LaVoie MJ;Schwarz TL
通讯作者:
Schwarz TL
影响因子:
64.8
作者:
Cunningham, John T.;Rodgers, Joseph T.;Puigserver, Pere
通讯作者:
Puigserver, Pere
影响因子:
13.3
作者:
Mauro-Lizcano, Marta;Esteban-Martinez, Lorena;Boya, Patricia
通讯作者:
Boya, Patricia
影响因子:
5.9
作者:
Maetzel, Dorothea;Sarkar, Sovan;Wang, Haoyi;Abi-Mosleh, Lina;Xu, Ping;Cheng, Albert W.;Gao, Qing;Mitalipova, Maisam;Jaenisch, Rudolf
通讯作者:
Jaenisch, Rudolf