%0 Journal Article
%T Enhanced sleep reverses memory deficits and underlying pathology in drosophila models of Alzheimer's disease
%A Bruno van Swinderen
%A Denis English
%A Jeff Donlea
%A Lijuan Cao
%A Markus Klose
%A Paul J. Shaw
%A Raphaelle Winsky-Sommerer
%A Stephane Dissel
%J Archive of "Neurobiology of Sleep and Circadian Rhythms".
%D 2017
%R 10.1016/j.nbscr.2016.09.001
%X To test the hypothesis that sleep can reverse cognitive impairment during Alzheimer's disease, we enhanced sleep in flies either co-expressing human amyloid precursor protein and Beta-secretase (APP:BACE), or in flies expressing human tau. The ubiquitous expression of APP:BACE or human tau disrupted sleep. The sleep deficits could be reversed and sleep could be enhanced when flies were administered the GABA-A agonist 4,5,6,7-tetrahydroisoxazolo-[5,4-c]pyridine-3-ol (THIP). Expressing APP:BACE disrupted both Short-term memory (STM) and Long-term memory (LTM) as assessed using Aversive Phototaxic Suppression (APS) and courtship conditioning. Flies expressing APP:BACE also showed reduced levels of the synaptic protein discs large (DLG). Enhancing sleep in memory-impaired APP:BACE flies fully restored both STM and LTM and restored DLG levels. Sleep also restored STM to flies expressing human tau. Using live-brain imaging of individual clock neurons expressing both tau and the cAMP sensor Epac1-camps, we found that tau disrupted cAMP signaling. Importantly, enhancing sleep in flies expressing human tau restored proper cAMP signaling. Thus, we demonstrate that sleep can be used as a therapeutic to reverse deficits that accrue during the expression of toxic peptides associated with Alzheimer's disease
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5662006/