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2015 ; 9
(ä): 340
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Golgi fragmentation in Alzheimer s disease
#MMPMID26441511
Joshi G
; Bekier ME 2nd
; Wang Y
Front Neurosci
2015[]; 9
(ä): 340
PMID26441511
show ga
The Golgi apparatus is an essential cellular organelle for post-translational
modifications, sorting, and trafficking of membrane and secretory proteins.
Proper functionality of the Golgi requires the formation of its unique
cisternal-stacking morphology. The Golgi structure is disrupted in a variety of
neurodegenerative diseases, suggesting a common mechanism and contribution of
Golgi defects in neurodegenerative disorders. A recent study on Alzheimer's
disease (AD) revealed that phosphorylation of the Golgi stacking protein GRASP65
disrupts its function in Golgi structure formation, resulting in Golgi
fragmentation. Inhibiting GRASP65 phosphorylation restores the Golgi morphology
from A?-induced fragmentation and reduces A? production. Perturbing Golgi
structure and function in neurons may directly impact trafficking, processing,
and sorting of a variety of proteins essential for synaptic and dendritic
integrity. Therefore, Golgi defects may ultimately promote the development of AD.
In the current review, we focus on the cellular impact of impaired Golgi
morphology and its potential relationship to AD disease development.