Targeting mitochondrial dysfunction: role for PINK1 and Parkin in mitochondrial quality control.

TitleTargeting mitochondrial dysfunction: role for PINK1 and Parkin in mitochondrial quality control.
Publication TypeJournal Article
Year of Publication2011
AuthorsNarendra, DP, Youle, RJ
JournalAntioxid Redox Signal
Date Published2011 May 15
KeywordsAnimals, Autophagy, Humans, Membrane Potential, Mitochondrial, Mitochondria, Mitochondrial Proteins, Protein Kinases, Ubiquitin-Protein Ligases, Ubiquitination

Mitochondria, which convert energy for the cell, accumulate damage with age, and the resulting mitochondrial dysfunction has been linked to the development of degenerative diseases and aging. To curb the accumulation of damaged mitochondria, the cell has elaborated a number of mitochondrial quality control processes. We describe recent work suggesting that Parkin and PTEN-induced putative kinase 1 (PINK1), two gene products linked to familial forms of parkinsonism, may constitute one of the cell's mitochondrial quality control pathways-identifying impaired mitochondria and selectively trimming them from the mitochondrial network by mitophagy. In particular, we discuss the regulation of PINK1 protein expression and Parkin localization by the bioenergetic status of individual mitochondria; the mechanism by which PINK1 recruits Parkin to the outer mitochondrial membrane; and Parkin's promotion of mitophagy through its ubiquitination of outer mitochondrial membrane proteins. This recent work suggests that Parkin and PINK1 may be among the first mammalian proteins identified with a direct role in regulating mitophagy, and implicate a failure of mitophagy in the pathogenesis of Parkinson's disease.

Alternate JournalAntioxid. Redox Signal.
Citation Key10.1089/ars.2010.3799
PubMed ID21194381
PubMed Central IDPMC3078490
Grant List / / Intramural NIH HHS / United States