The protease Omi regulates mitochondrial biogenesis through the GSK3β/PGC-1α pathway.
The protease Omi regulates mitochondrial biogenesis through the GSK3β/PGC-1α pathway.
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蛋白酶 Omi 通过 GSK3 beta/PGC-1 alpha 途径调节线粒体生物合成
DOI:
10.1038/cddis.2014.328
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发表时间:
2014-08-14
影响因子:
9
通讯作者:
中科院分区:
文献类型:
--
作者:
Loss of the mitochondrial protease activity of Omi causes mitochondrial dysfunction, neurodegeneration with parkinsonian features and premature death in mnd2 (motor neuron degeneration 2) mice. However, the detailed mechanisms underlying this pathology remain largely unknown. Here, we report that Omi participates in the process of mitochondrial biogenesis, which has been linked to several neurodegenerative diseases. The mitochondrial biogenesis is deficit in mnd2 mice, evidenced by severe decreases of mitochondrial components, mitochondrial DNA and mitochondrial density. Omi cleaves glycogen synthase kinase 3β (GSK3β), a kinase promoting PPARγ coactivator-1α (PGC-1α) degradation, to regulate PGC-1α, a factor important for the mitochondrial biogenesis. In mnd2 mice, GSK3β abundance is increased and PGC-1α abundance is decreased significantly. Inhibition of GSK3β by SB216763 or overexpression of PGC-1α can restore mitochondrial biogenesis in mnd2 mice or Omi-knockdown N2a cells. Furthermore, there is a significant improvement of the movement ability of mnd2 mice after SB216763 treatment. Thus, our study identified Omi as a novel regulator of mitochondrial biogenesis, involving in Omi protease-deficient-induced neurodegeneration.
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影响因子:
3.9
作者:
Bogaerts, Veerle;Nuytemans, Karen;Van Broeckhoven, Christine
通讯作者:
Van Broeckhoven, Christine
影响因子:
64.5
作者:
Lin, JD;Wu, PH;Spiegelman, BM
通讯作者:
Spiegelman, BM
影响因子:
3.5
作者:
Kuroda, Y;Mitsui, T;Matsumoto, T
通讯作者:
Matsumoto, T
影响因子:
7.8
作者:
Anderson, Rozalyn M.;Barger, Jamie L.;Edwards, Michael G.;Braun, Kristina H.;O'Connor, Clare E.;Prolla, Tomas A.;Weindruch, Richard
通讯作者:
Weindruch, Richard
影响因子:
12.4
作者:
Li, B.;Hu, Q.;Wang, G.
通讯作者:
Wang, G.