Dependence of PINK1 accumulation on mitochondrial redox system.

Dependence of PINK1 accumulation on mitochondrial redox system.
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PINK1 积累对线粒体氧化还原系统的依赖性

DOI:
10.1111/acel.13211
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发表时间:
2020-09
期刊:
影响因子:
7.8
通讯作者:
Wang G
Wang G
中科院分区:
生物学1区
文献类型:
--
作者:
Gao F;Zhang Y;Hou X;Tao Z;Ren H;Wang G

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PINK 1在线粒体外膜(OMM)上的积累对于PINK介导的线粒体自噬是必需的。质子离子载体,如羰基氰间氯苯腙(CCCP)和羰基氰-4-(三氟甲氧基)苯腙(FCCP),抑制PINK 1输入线粒体基质并诱导PINK 1 OMM积累。在这里,我们表明,在线粒体膜间空间(IMS)的CHCHD 4/GFER二硫键中继系统是需要PINK 1稳定时,线粒体膜电位丢失。通过线粒体氧化应激激活CHCHD 4/GFER系统或用抗氧化剂抑制CHCHD 4/GFER系统可分别促进或抑制PINK 1积累。因此,数据表明CHCHD 4/GFER系统在PINK 1积累中起关键作用。肌萎缩侧索硬化症相关的超氧化物歧化酶1突变体在IMS中的氧化还原状态和CHCHD 4/GFER系统失调,导致PINK 1积累和线粒体自噬的抑制。因此,IMS中的氧化还原系统参与PINK 1积累和受损的线粒体清除,这可能在线粒体功能障碍相关的神经退行性疾病中发挥作用。 PINK 1依赖于IMS中的二硫键中继系统在去极化的线粒体上积累。未折叠的PINK 1通过TOM进入IMS,并与氧化的CHCHD 4相互作用,以避免从膜电位丧失的线粒体释放到胞质溶胶中。 TOM复合物中的PINK 1通过TOM中的一些蛋白质进一步转运到OMM中。
Accumulation of PINK1 on the outer mitochondrial membrane (OMM) is necessary for PINK‐mediated mitophagy. The proton ionophores, like carbonyl cyanide m‐chlorophenylhydrazone (CCCP) and carbonyl cyanide‐4‐(trifluoromethoxy)phenylhydrazone (FCCP), inhibit PINK1 import into mitochondrial matrix and induce PINK1 OMM accumulation. Here, we show that the CHCHD4/GFER disulfide relay system in the mitochondrial intermembrane space (IMS) is required for PINK1 stabilization when mitochondrial membrane potential is lost. Activation of CHCHD4/GFER system by mitochondrial oxidative stress or inhibition of CHCHD4/GFER system with antioxidants can promote or suppress PINK1 accumulation, respectively. Thus data suggest a pivotal role of CHCHD4/GFER system in PINK1 accumulation. The amyotrophic lateral sclerosis‐related superoxide dismutase 1 mutants dysregulated redox state and CHCHD4/GFER system in the IMS, leading to inhibitions of PINK1 accumulation and mitophagy. Thus, the redox system in the IMS is involved in PINK1 accumulation and damaged mitochondrial clearance, which may play roles in mitochondrial dysfunction‐related neurodegenerative diseases. PINK1 is accumulated on the depolarized mitochondria dependent on the disulfide relay system in the IMS. Unfolded PINK1 enters the IMS through the TOM and interacts with oxidized CHCHD4 to avoid releasing to cytosol from the membrane potential lost mitochondria. The PINK1 in the TOM complex is further transported into the OMM through some proteins in the TOM.
DOI: 10.1186/1471-2121-11-90
发表时间: 2010-11-22
期刊: BMC cell biology
影响因子: --
作者:
Lin W;Kang UJ
通讯作者: Kang UJ
DOI: 10.1083/jcb.201008084
发表时间: 2010-11-29
期刊: The Journal of cell biology
影响因子: --
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发表时间: 2015-05-26
影响因子: 11.1
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发表时间: 2013-11-01
期刊: AUTOPHAGY
影响因子: 13.3
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AIF 和 CHCHD4 之间的相互作用调节呼吸链生物发生。
DOI: 10.1016/j.molcel.2015.04.020
发表时间: 2015-06-18
期刊: MOLECULAR CELL
影响因子: 16
作者:
Hangen, Emilie;Feraud, Olivier;Modjtahedi, Nazanine
通讯作者: Modjtahedi, Nazanine