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Pink1, Parkin, DJ-1 and mitochondrial dysfunction in Parkinson's disease

Mark W Dodson, Ming Guo
Current Opinion in Neurobiology 2007, 17 (3): 331-7
17499497
Mutations in PARKIN, PTEN-induced kinase 1 (PINK1) and DJ-1 are found in autosomal recessive forms and some sporadic cases of Parkinson's disease. Recent work on these genes underscores the central importance of mitochondrial dysfunction and oxidative stress in Parkinson's disease. In particular, pink1 and parkin loss-of-function mutants in Drosophila show similar phenotypes, and pink1 acts upstream of parkin in a common genetic pathway to regulate mitochondrial function. DJ-1 has a role in oxidative stress protection, but a direct role of DJ-1 in mitochondrial function has not been fully established. Importantly, defects in mitochondrial function have also been identified in patients who carry both PINK1 and PARKIN mutations, and in those who have sporadic Parkinson's disease. Future studies of the biochemical interactions between Pink1 and Parkin, and identification of other components in this pathway, are likely to provide insight into Parkinson's disease pathogenesis, and might identify new therapeutic targets.

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