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Using fruit flies to understand sleep regulation and function

必威: 2019-02-27
必威登录2019年度春季学期学术系列讲座之四
题目:Using fruit flies to understand sleep regulation and function
演讲人:Jeffrey Donlea, Ph.D.
Assistant Professor
Neurobiology Department at UCLA
时间:2019年3月22日,13:00-14:30
地点:金光必威官网登录大楼邓祐才报告厅
主持人:罗冬根研究员
摘要:
Sleep-promoting neurons in the dorsal fan-shaped body (dFB) of Drosophila are vital for sleep homeostasis, but how these cells impose sleep on the organism is not well understood. We report that dFB neurons communicate via inhibitory transmitters, including allatostatin-A (AstA), with interneurons connecting the superior arch with the ellipsoid body of the central complex. Using a combination of behavioral genetics, electrophysiology, and optogenetics, we have begun to outline a homeostatic negative feedback circuit that regulates sleep and arousal in the fruit fly. By virtue of this autoregulatory loop, dFB-mediated inhibition interrupts processes that incur a sleep debt, allowing restorative sleep to rebalance the books.
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