Linked Life Data

21262209

Source:http://linkedlifedata.com/resource/pubmed/id/21262209

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pubmed-article:21262209pubmed:abstractTextAccumulation of dysfunctional Mitochondria has been implicated in the pathogenesis of Parkinson's disease (PD). Mutations in PTEN-induced kinase 1 (PINK1), which encodes a putative mitochondrial serine/threonine kinase, have been identified in early-onset forms of PD. Recent data showed that the loss of PINK1 function led to oxidative stress, mitochondrial damage and autophagic elimination of damaged mitochondria. But the precise mechanism of autophagy induced by loss of PINK1 is unclear. In this study, we found that in mouse dopaminergic MN9D cells, down-regulation of PINK1 by RNA interference resulted in induction of mitochondrial autophagy (mitophagy), abnormal mitochondrial morphology, partial loss of mitochondrial membrane potential and increased production of reactive oxygen species (ROS). Mitophagy in these cells was associated with the up-regulation of autophagy activator Beclin 1 and opening of mitochondrial permeability transition (MPT) pore. These findings suggest that PINK1 may regulate mitophagy through controlling MPT pore opening and general autophagy regulators.lld:pubmed
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pubmed-article:21262209pubmed:authorpubmed-author:FanChunxiangClld:pubmed
pubmed-article:21262209pubmed:copyrightInfoCopyright © 2010. Published by Elsevier B.V.lld:pubmed
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pubmed-article:21262209pubmed:year2011lld:pubmed
pubmed-article:21262209pubmed:articleTitleSilencing of PINK1 induces mitophagy via mitochondrial permeability transition in dopaminergic MN9D cells.lld:pubmed
pubmed-article:21262209pubmed:affiliationBeijing Institute for Neuroscience, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing 100069, China.lld:pubmed
pubmed-article:21262209pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:21262209pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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