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pubmed-article:18258746pubmed:abstractTextMutations in the leucine-rich repeat kinase (LRRK2) gene cause late-onset autosomal dominant Parkinson's disease (PD) with pleiomorphic pathology. Previously, we and others found that expression of mutant LRRK2 causes neuronal degeneration in cell culture. Here we used the GAL4/UAS system to generate transgenic Drosophila expressing either wild-type human LRRK2 or LRRK2-G2019S, the most common mutation associated with PD. Expression of either wild-type human LRRK2 or LRRK2-G2019S in the photoreceptor cells caused retinal degeneration. Expression of LRRK2 or LRRK2-G2019S in neurons produced adult-onset selective loss of dopaminergic neurons, locomotor dysfunction, and early mortality. Expression of mutant G2019S-LRRK2 caused a more severe parkinsonism-like phenotype than expression of equivalent levels of wild-type LRRK2. Treatment with l-DOPA improved mutant LRRK2-induced locomotor impairment but did not prevent the loss of tyrosine hydroxylase-positive neurons. To our knowledge, this is the first in vivo"gain-of-function" model which recapitulates several key features of LRRK2-linked human parkinsonism. These flies may provide a useful model for studying LRRK2-linked pathogenesis and for future therapeutic screens for PD intervention.lld:pubmed
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pubmed-article:18258746pubmed:authorpubmed-author:WangTaoTlld:pubmed
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pubmed-article:18258746pubmed:authorpubmed-author:SawaAkiraAlld:pubmed
pubmed-article:18258746pubmed:authorpubmed-author:LiuZhaohuiZlld:pubmed
pubmed-article:18258746pubmed:authorpubmed-author:JiangHaibingHlld:pubmed
pubmed-article:18258746pubmed:authorpubmed-author:WangXiaoyueXlld:pubmed
pubmed-article:18258746pubmed:authorpubmed-author:MoranTimothyTlld:pubmed
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pubmed-article:18258746pubmed:authorpubmed-author:LiXuepingXlld:pubmed
pubmed-article:18258746pubmed:authorpubmed-author:RenQiutingQlld:pubmed
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pubmed-article:18258746pubmed:articleTitleA Drosophila model for LRRK2-linked parkinsonism.lld:pubmed
pubmed-article:18258746pubmed:affiliationDepartment of Psychiatry, Division of Neurobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.lld:pubmed
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