Abstract
Resveratrol(RES),a natural polyphenolic phyto-chemical,has been suggested as a putative anti-aging mole-cule for the prevention and treatment of Alzheimer's disease(AD)by the activation of sirtuin 1(Sirt1/Sir2).In this study,we tested the effects of RES and Sirt1/Sir2 on sleep and courtship memory in a Drosophila model by overexpression of amyloid precursor protein(APP),whose duplications and mutations cause familial AD.We found a mild but signifi-cant transcriptional increase of Drosophila Sir2(dSir2)by RES supplementation for up to 17 days in APP flies,but not for 7 days.RES and dSir2 almost completely reversed the sleep and memory deficits in APP flies.We further dem-onstrated that dSir2 acts as a sleep promotor in Drosophila neurons.Interestingly,RES increased sleep in the absence of dSir2 in dSir2-null mutants,and RES further enhanced sleep when dSir2 was either overexpressed or knocked down in APP flies.Finally,we showed that Aβ aggregates in APP flies were reduced by RES and dSir2,probably via inhibiting Drosophila β-secretase(dBACE).Our data suggest that RES rescues the APP-induced behavioral deficits and Aβ burden largely,but not exclusively,via dSir2.
基金项目
Bloomington Stock Center for the fly stocks used in this study()
National Natural Science Foundation of China(81970999)
Shanghai Rising-Star Program(19QA1404900)
Innovation Program of the Shanghai Municipal Education Commission(2019-01-07-00-02-E00037)
维普
万方数据