1. GULP1/CED-6 ameliorates amyloid-β toxicity in a Drosophila model of Alzheimer’s disease
- Author
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Jacky Chi Ki Ngo, Ho Yin Edwin Chan, Wai Yin Vivien Chiu, Alex Chun Koon, and Kwok-Fai Lau
- Subjects
0301 basic medicine ,Retinal degeneration ,Transgene ,Disease ,Biology ,03 medical and health sciences ,0302 clinical medicine ,neurotoxicity ,mental disorders ,medicine ,Senile plaques ,CED-6 ,Drosophila ,Aβ ,Gerotarget ,Neurodegeneration ,neurodegeneration ,Neurotoxicity ,medicine.disease ,biology.organism_classification ,Research Paper: Gerotarget(Focus on Aging) ,Cell biology ,030104 developmental biology ,Oncology ,Toxicity ,APP ,030217 neurology & neurosurgery - Abstract
Amyloidogenic processing of APP by β- and γ-secretases leads to the generation of amyloid-β peptide (Aβ), and the accumulation of Aβ in senile plaques is a hallmark of Alzheimer’s disease (AD). Understanding the mechanisms of APP processing is therefore paramount. Increasing evidence suggests that APP intracellular domain (AICD) interacting proteins influence APP processing. In this study, we characterized the overexpression of AICD interactor GULP1 in a Drosophila AD model expressing human BACE and APP695. Transgenic GULP1 significantly lowered the levels of both Aβ1-40 and Aβ1-42 without decreasing the BACE and APP695 levels. Overexpression of GULP1 also reduced APP/BACE-mediated retinal degeneration, rescued motor dysfunction and extended longevity of the flies. Our results indicate that GULP1 regulate APP processing and reduce neurotoxicity in a Drosophila AD model.
- Published
- 2017