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Parkin and -Synuclein: Opponent Actions in The Pathogenesis of Parkinson’S Disease

Laboratory of Neurogenetics, National Institute on Aging

Mark R. Cookson

Laboratory of Neurogenetics, National Institute on AgingCookson{at}mail.nih.gov

David W. Miller

Laboratory of Neurogenetics, National Institute on Aging

Dominant mutations in the gene for •-synuclein, a small presynaptic protein, can cause Parkinson’s disease. Although there is still substantial debate about the precise mechanisms, •-synuclein is toxic to vulnerable neurons, probably as a result of its tendency to aggregate. Opposing this is another gene product that, when mutated, causes a recessive form of parkinsonism, parkin. Parkin has been recently shown to protect cells against •-synuclein toxicity. However, the precise details of the mechanism are unclear. This review will discuss the concept that there are multiple neuronal functions that are targeted by mutant •-synuclein, and in many cases, there is evidence that parkin can protect cells against damage to the same systems. The authors will also discuss ways in which to test some of these ideas, by using newly identified genes such as DJ-1 that cause similar phenotypes.

Key Words: Lewy bodies • Mitochondria • Parkin • Proteasome • Synapses • Synuclein

The Neuroscientist, Vol. 10, No. 1, 63-72 (2004)
DOI: 10.1177/1073858403260392


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