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Updated: Feb 23, 2026

Perspectives on Neuroscience
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It's not all in the brain.

Lauren J Francey1, John B Hogenesch1

  • 1Divisions of Human Genetics and Immunobiology, Cincinnati Children's Hospital Medical Cente, Cincinnati, United States.

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|August 30, 2017
PubMed
Summary
This summary is machine-generated.

A skeletal muscle clock gene significantly influences sleep regulation, demonstrating a greater impact than its role in the brain. This finding highlights peripheral clocks in controlling circadian rhythms and sleep.

Keywords:
arntlbmal1homeostasismouseneurosciencephysiologyskeletal musclesleep

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Area of Science:

  • Chronobiology
  • Sleep Science
  • Molecular Biology

Background:

  • Circadian rhythms govern physiological processes, including sleep.
  • Clock genes are crucial for maintaining circadian rhythms.
  • The role of peripheral clocks, like those in skeletal muscle, in sleep regulation is not fully understood.

Purpose of the Study:

  • To investigate the role of a specific clock gene in skeletal muscle in regulating sleep.
  • To compare the influence of skeletal muscle clock gene expression on sleep with that of the brain.

Main Methods:

  • Utilized mouse models with genetically modified clock gene expression in skeletal muscle.
  • Monitored sleep patterns and circadian behavior.
  • Analyzed gene expression levels in skeletal muscle and brain tissue.

Main Results:

  • Disruption of the clock gene in skeletal muscle led to significant alterations in sleep architecture.
  • Skeletal muscle clock gene's effect on sleep was more pronounced than its effect when manipulated in the brain.
  • Identified specific molecular pathways affected by skeletal muscle clock gene activity.

Conclusions:

  • Clock genes expressed in skeletal muscle play a critical role in regulating sleep.
  • Peripheral clocks in skeletal muscle have a dominant influence on sleep compared to central brain clocks.
  • Targeting skeletal muscle clock genes may offer novel therapeutic strategies for sleep disorders.