MPP+ impairs autophagic clearance of alpha-synuclein by impairing the activity of dynein.

Abstract:

: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.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Cai ZL,Shi JJ,Yang YP,Cao BY,Wang F,Huang JZ,Yang F,Zhang P,Liu CF

doi

10.1097/WNR.0b013e32832986c4

subject

Has Abstract

pub_date

2009-04-22 00:00:00

pages

569-73

issue

6

eissn

0959-4965

issn

1473-558X

journal_volume

20

pub_type

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