Journal
NEUROREPORT
Volume 20, Issue 6, Pages 569-573Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/WNR.0b013e32832986c4
Keywords
1-methyl-4-phenylpyridinium; autophagy; dynein; LC3-II; Parkinson's disease; alpha-synuclein
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Funding
- National Natural Science Foundation of China [30870869]
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Increasing evidence suggests that dynein has an important role in the clearance of misfolded proteins by autophagy. Here we show that treatment of cells with 1-methyl-4-phenylpyridinium (MPP+) cause alpha-synuclein overexpression and aggregation, leading to the accumulation of autophagic vacuoles and the recruitment of LC3-II to these vacuoles in the cytoplasm. After MPP+ treatment dynein expression decreased and was mainly aggregated at the periphery of cytoplasm and lost its colocalization with alpha-synuclein and lamp1, indicating that dynein lost its function in the aggresome formation and failed to return autophagosome and lysosomes to the center of the cell for degradation. We consider that dynein plays an important role in the autophagic clearance of aggregate-prone proteins. NeuroReport 20:569-573 (C) 2009 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins.
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