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Control of REM and Non-REM Sleep in Mice and New Sleep Regulation Mechanisms Revealed by C. elegans Research Ryunosuke CHIBA 1 , Naoko HAYASHI 1 , Yu HAYASHI 1,2 1Department of Biological Sciences, Graduate School of Science, The University of Tokyo 2International Institute for Integrative Sleep Medicine(WPI-IIIS), University of Tsukuba Keyword: REM sleep , NREM sleep , CRL , ER stress , proteostasis pp.10-18
Published Date 2025/1/10
DOI https://doi.org/10.18916/masui.2025010006
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 Sleep is a behavior observed across the animal kingdom, and the results of animal and human research indicate that sleep is essential for survival. However, a clear answer to the fundamental question of “why do animals sleep” remains to be found. We investigated the brain stem neurons derived from neuroepithelium called the cerebellar rhombic lip(CRL), which appears temporarily during the embryonic stage in mice. We identified neurons that are involved in the switch between rapid eye movement(REM)and non-REM(NREM)sleep and the switch between wakefulness and sleep. We then succeeded in creating transgenic mice that exhibit a selective inhibition of REM sleep, which suggests that REM sleep may play a role in enhancing the quality of NREM sleep. In addition, research using the nematode Caenorhabditis elegans has revealed that endoplasmic reticulum(ER)stress in peripheral tissues induces sleep. That research identified a strong relationship between peripheral proteostasis and sleep homeostasis, providing clues to the mechanism by which fatigue induces sleep. The further accumulation of knowledge from such research conducted worldwide can be expected to increase the understanding of the roles of sleep.


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電子版ISSN 印刷版ISSN 0021-4892 克誠堂出版

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