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Rescuing the Golgi Puts Brakes on Alzheimer's Progression

by Dr. Trupti Shirole on December 7, 2014 at 5:01 AM
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 Rescuing the Golgi Puts Brakes on Alzheimer's Progression

The progression of Alzheimer's disease (AD) can be arrested by rescuing the Golgi apparatus, the part of the cell involved in packaging and sorting protein cargo.

The study was carried out by researchers Yanzhuang Wang, Gunjan Joshi, and colleagues at the University of Michigan, Ann Arbor. In order to uncover the mechanism damaging the Golgi, they used a transgenic mouse and tissue culture models of AD to look at what was happening inside the brain.

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AD progresses in a rising storm of cellular activity inside the brain, as deposits of the toxic protein, amyloid-beta, overwhelm neurons. An apparent side effect of accumulating amyloid-beta is the Golgi fragmentation by activating a cell cycle kinase, cdk5. This Golgi function can be rescued by blocking cdk5 or shielding its downstream target protein in the Golgi, GRASP65. Rescuing the Golgi reduced amyloid beta accumulation significantly, apparently by re-opening a normal protein degradation pathway for the amyloid precursor protein (APP).

The study has paved a way for drugs hoping to slow AD progression.

Source: Medindia
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