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Future Neurol. 2012 Mar;7(2):145-153.

α-synuclein, LRRK2 and their interplay in Parkinson's disease.

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  • 1Transgenics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD 20892, USA.

Abstract

Of the various genetic factors contributing to the pathogenesis of Parkinson's disease (PD), only mutations in α-synuclein (α-syn) and LRRK2 genes cause clinical and neuropathological phenotypes closely resembling the sporadic cases. Therefore, studying the pathophysiological functions of these two PD-related genes is particularly informative in understanding the underlying molecular pathogenic mechanism of the disease. PD-related missense and multiplication mutations in α-syn may cause both early- and late-onset PD, whereas various PD-related LRRK2 missense mutations may contribute to the more common late-onset PD. While intensive studies have been carried out to elucidate the pathogenic properties of PD-related mutant α-syn and LRRK2, our knowledge of their normal functions and their potential genetic interplay remains rudimental. In this review, we summarize the progress made regarding the pathophysiological functions of α-syn, LRRK2 and their interaction in PD, based on the available literature and our unpublished observations.

PMID:
22563296
[PubMed]
PMCID:
PMC3343692
Free PMC Article

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