期刊
SCIENCE
卷 294, 期 5545, 页码 1346-1349出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1063522
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资金
- NINDS NIH HHS [NS38375] Funding Source: Medline
The substantia nigra in Parkinson's disease (PD) is depleted of dopaminergic neurons and contains fibrillar Lewy bodies comprising primarily alpha -synuclein. We screened a library to identify drug-like molecules to probe the relation between neurodegeneration and alpha -synuctein fibrilization. All but one of 15 fibril inhibitors were catecholamines related to dopamine. The inhibitory activity of dopamine depended on its oxidative ligation to alpha -synuctein and was selective for the protofibril-to-fibril conversion, causing accumulation of the alpha -synuctein protofibril. Adduct formation provides an explanation for the dopaminergic selectivity of alpha -synuctein-associated neurotoxicity in PD and has implications for current and future PD therapeutic and diagnostic strategies.
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