Transient assembly of F-actin on the outer mitochondrial membrane contributes to mitochondrial fission.
Transient assembly of F-actin on the outer mitochondrial membrane contributes to mitochondrial fission.
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DOI:
10.1083/jcb.201404050
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发表时间:
2015-01-05
期刊:
影响因子:
--
通讯作者:
Karbowski M
中科院分区:
文献类型:
--
作者:
Li S;Xu S;Roelofs BA;Boyman L;Lederer WJ;Sesaki H;Karbowski M
Dynamic assembly and disassembly of F-actin on mitochondria participate in Drp1-mediated mitochondrial fission. In addition to established membrane remodeling roles in various cellular locations, actin has recently emerged as a participant in mitochondrial fission. However, the underlying mechanisms of its participation remain largely unknown. We report that transient de novo F-actin assembly on the mitochondria occurs upon induction of mitochondrial fission and F-actin accumulates on the mitochondria without forming detectable submitochondrial foci. Impairing mitochondrial division through Drp1 knockout or inhibition prolonged the time of mitochondrial accumulation of F-actin and also led to abnormal mitochondrial accumulation of the actin regulatory factors cortactin, cofilin, and Arp2/3 complexes, suggesting that disassembly of mitochondrial F-actin depends on Drp1 activity. Furthermore, down-regulation of actin regulatory proteins led to elongation of mitochondria, associated with mitochondrial accumulation of Drp1. In addition, depletion of cortactin inhibited Mfn2 down-regulation– or FCCP-induced mitochondrial fragmentation. These data indicate that the dynamic assembly and disassembly of F-actin on the mitochondria participates in Drp1-mediated mitochondrial fission.
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DOI:
10.1073/pnas.1208141109
发表时间:
2012-09-18
影响因子:
11.1
作者:
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通讯作者:
Knoell, Bernd
影响因子:
9.2
作者:
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DOI:
10.1083/jcb.200211046
发表时间:
2003-01-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Chen H;Detmer SA;Ewald AJ;Griffin EE;Fraser SE;Chan DC
通讯作者:
Chan DC
影响因子:
16.2
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通讯作者:
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