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Leak potassium channels regulate sleep duration.


ABSTRACT: A primary goal of sleep research is to understand the molecular basis of sleep. Although some sleep/wake-promoting circuits and secreted substances have been identified, the detailed molecular mechanisms underlying the regulation of sleep duration have been elusive. Here, to address these mechanisms, we developed a simple computational model of a cortical neuron with five channels and a pump, which recapitulates the cortical electrophysiological characteristics of slow-wave sleep (SWS) and wakefulness. Comprehensive bifurcation and detailed mathematical analyses predicted that leak K+ channels play a role in generating the electrophysiological characteristics of SWS, leading to a hypothesis that leak K+ channels play a role in the regulation of sleep duration. To test this hypothesis experimentally, we comprehensively generated and analyzed 14 KO mice, and found that impairment of the leak K+ channel (Kcnk9) decreased sleep duration. Based on these results, we hypothesize that leak K+ channels regulate sleep duration in mammals.

SUBMITTER: Yoshida K 

PROVIDER: S-EPMC6176580 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Leak potassium channels regulate sleep duration.

Yoshida Kensuke K   Shi Shoi S   Ukai-Tadenuma Maki M   Fujishima Hiroshi H   Ohno Rei-Ichiro RI   Ueda Hiroki R HR  

Proceedings of the National Academy of Sciences of the United States of America 20180917 40


A primary goal of sleep research is to understand the molecular basis of sleep. Although some sleep/wake-promoting circuits and secreted substances have been identified, the detailed molecular mechanisms underlying the regulation of sleep duration have been elusive. Here, to address these mechanisms, we developed a simple computational model of a cortical neuron with five channels and a pump, which recapitulates the cortical electrophysiological characteristics of slow-wave sleep (SWS) and wakef  ...[more]

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