1. Neuroscience

Salt-inducible kinase 3 regulates the mammalian circadian clock by destabilizing PER2 protein

  1. Naoto Hayasaka  Is a corresponding author
  2. Arisa Hirano
  3. Yuka Miyoshi
  4. Isao T Tokuda
  5. Hikari Yoshitane
  6. Junichiro Matsuda
  7. Yoshitaka Fukada
  1. Nagoya University, Japan
  2. The University of Tokyo, Japan
  3. Kindai University, Japan
  4. Ritsumeikan University, Japan
  5. National Institutes of Biomedical Innovation, Health and Nutrition, Japan
https://doi.org/10.7554/eLife.24779
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  1. Naoto Hayasaka
  2. Arisa Hirano
  3. Yuka Miyoshi
  4. Isao T Tokuda
  5. Hikari Yoshitane
  6. Junichiro Matsuda
  7. Yoshitaka Fukada
(2017)
Salt-inducible kinase 3 regulates the mammalian circadian clock by destabilizing PER2 protein
eLife 6:e24779.
https://doi.org/10.7554/eLife.24779
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Abstract

Salt-inducible kinase 3 (SIK3) plays a crucial role in various aspects of metabolism. In the course of investigating metabolic defects in Sik3-deficient mice (Sik3-/-), we observed that circadian rhythmicity of the metabolisms was phase-delayed. Sik3-/- mice also exhibited other circadian abnormalities, including lengthening of the period, impaired entrainment to the light-dark cycle, phase variation in locomotor activities, and aberrant physiological rhythms. Ex vivosuprachiasmatic nucleus slices from Sik3-/- mice exhibited destabilized and desynchronized molecular rhythms among individual neurons. In cultured cells, Sik3-knockdown resulted in abnormal bioluminescence rhythms. Expression levels of PER2, a clock protein, were elevated in Sik3-knockdown cells but down-regulated in Sik3-overexpressing cells, which could be attributed to a phosphorylation-dependent decrease in PER2 protein stability. This was further confirmed by PER2 accumulation in the Sik3-/- fibroblasts and liver. Collectively, SIK3 plays key roles in circadian rhythms by facilitating phosphorylation-dependent PER2 destabilization, either directly or indirectly.

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Author details

  1. Naoto Hayasaka

    Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
    For correspondence
    naotohayasaka@yahoo.co.jp
    Competing interests
    The authors declare that no competing interests exist.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0003-2844-524X

  2. Arisa Hirano

    Department of Biological Sciences, The University of Tokyo, Tokyo, Japan
    Competing interests
    The authors declare that no competing interests exist.

  3. Yuka Miyoshi

    Department of Anatomy and Neurobiology, Kindai University, Osaka, Japan
    Competing interests
    The authors declare that no competing interests exist.

  4. Isao T Tokuda

    Department of Mechanical Engineering, Ritsumeikan University, Kusatsu, Japan
    Competing interests
    The authors declare that no competing interests exist.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0001-6212-0022

  5. Hikari Yoshitane

    Department of Biological Sciences, The University of Tokyo, Tokyo, Japan
    Competing interests
    The authors declare that no competing interests exist.

  6. Junichiro Matsuda

    Laboratory of Animal Models for Human Diseases, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
    Competing interests
    The authors declare that no competing interests exist.

  7. Yoshitaka Fukada

    Department of Biological Sciences, The University of Tokyo, Tokyo, Japan
    Competing interests
    The authors declare that no competing interests exist.

Funding

Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research 25293053)

  • Naoto Hayasaka

Japan Science and Technology Agency (PRESTO)

  • Naoto Hayasaka

Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research 24227001)

  • Yoshitaka Fukada

Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research 17H06096)

  • Yoshitaka Fukada

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Ethics

Animal experimentation: This study was performed in strict accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of the Japan Society for Promotion of Sciences. All of the animals were handled according to approved institutional animal care and use committees of Kindai University (KAME- 19-051) and Nagoya University (17239).

Copyright

© 2017, Hayasaka et al.

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

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  1. Naoto Hayasaka
  2. Arisa Hirano
  3. Yuka Miyoshi
  4. Isao T Tokuda
  5. Hikari Yoshitane
  6. Junichiro Matsuda
  7. Yoshitaka Fukada
(2017)
Salt-inducible kinase 3 regulates the mammalian circadian clock by destabilizing PER2 protein
eLife 6:e24779.
https://doi.org/10.7554/eLife.24779

Share this article

https://doi.org/10.7554/eLife.24779

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