Regulation by mitophagy - PubMed

Review

Regulation by mitophagy

Nobutaka Hattori et al. Int J Biochem Cell Biol. 2014 Aug.

Abstract

Eukaryotes employ elaborate mitochondrial quality control to maintain the function of the power-generating organelle. Mitochondrial quality control is particularly important for the maintenance of neural and muscular tissues. Mitophagy is specialized version of the autophagy pathway. Mitophagy delivers damaged mitochondria to lysosomes for degradation. Recently, a series of elegant studies have demonstrated that two Parkinson's disease-associated genes PINK1 and parkin are involved in the maintenance of healthy mitochondria as mitophagy. Parkin in co-operation with PINK1 specifically recognizes damaged mitochondria with reduced mitochondrial membrane potential (Δψm), rapidly isolates them from the mitochondrial network and eliminates them through the ubiquitin-proteasome and autophagy pathways. Here we introduce and review recent studies that contribute to understanding the molecular mechanisms of mitophagy such as PINK1 and Parkin-mediated mitochondrial regulation. We also discuss how defects in the PINK1-Parkin pathway may cause neurodegeneration in Parkinson's disease.

Keywords: Mitochondrial dysfunction; Mitophagy; PINK1; Parkin; Parkinson’ disease.

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