Resveratrol and Sir2 Reverse Sleep and Memory Defects Induced by Amyloid Precursor Protein
Yuping Hao1 · Lingzhan Shao1 · Jianan Hou1 · Yan Zhang1 · Yuqian Ma1 · Jinhao Liu1 · Chuan Xu1 · Fujun Chen1 · Li‑Hui Cao2 · Yong Ping11 Bio‑X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
2 School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
Abstract
Resveratrol (RES), a natural polyphenolic phytochemical, has been suggested as a putative anti-aging molecule 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 significant 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 demonstrated 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.
Keywords
Resveratrol; Sir2; Sleep; Amyloid precursor protein; β-Secretase; Drosophila
