Cited by 459Circadian rhythm and melatoninMetabolism, Diabetes, and CancerAdipose Tissue and Metabolism

Muscle insulin sensitivity and glucose metabolism are controlled by the intrinsic muscle clock

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Dyar, Kenneth A., Ciciliot, Stefano, Wright, Lauren E., Biensø, Rasmus S., Tagliazucchi, Guidantonio M., Patel, Vishal R., Forcato, Mattia, Paz, Marcia I.P. +12 more·2014·Molecular Metabolism

Abstract

Circadian rhythms control metabolism and energy homeostasis, but the role of the skeletal muscle clock has never been explored. We generated conditional and inducible mouse lines with muscle-specific ablation of the core clock gene Bmal1. Skeletal muscles from these mice showed impaired insulin-stimulated glucose uptake with reduced protein levels of GLUT4, the insulin-dependent glucose transporter, and TBC1D1, a Rab-GTPase involved in GLUT4 translocation. Pyruvate dehydrogenase (PDH) activity was also reduced due to altered expression of circadian genes Pdk4 and Pdp1, coding for PDH kinase and phosphatase, respectively. PDH inhibition leads to reduced glucose oxidation and diversion of glycolytic intermediates to alternative metabolic pathways, as revealed by metabolome analysis. The impaired glucose metabolism induced by muscle-specific Bmal1 knockout suggests that a major physiological role of the muscle clock is to prepare for the transition from the rest/fasting phase to the active/feeding phase, when glucose becomes the predominant fuel for skeletal muscle.

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Authors
Dyar, K. A., Ciciliot, S., Wright, L. E., Biensø, R. S., Tagliazucchi, G. M., Patel, V. R., Forcato, M., Paz, M. I. P., Gudiksen, A., Solagna, F., Albiero, M., Moretti, I., Eckel-Mahan, K. L., Baldi, P., Sassone-Corsi, P., Rizzuto, R., Bicciato, S., Pilegaard, H., Blaauw, B., & Schiaffino, S.
Affiliations
  • Veneto Institute of Molecular Medicine (IT)
  • University of Padua (IT)
  • University of Copenhagen (DK)
  • University of Modena and Reggio Emilia (IT)
  • University of California, Irvine (US)
Corresponding author
  • Dyar, Kenneth A.
  • Schiaffino, Stefano
Venue
Molecular Metabolism
Publisher
Elsevier BV
Published
2014-02
Volume
3
Issue
1
Pages
29-41
ISSN
2212-8778 (ISSN-L)
OpenAlex
W1964634897
Cited by
454
References
73
Citations by year
2026: 34 · 2025: 37 · 2024: 40 · 2023: 46 · 2022: 42 · 2021: 33 · 2020: 53 · 2019: 34 · 2018: 36 · 2017: 28 · 2016: 42 · 2015: 19 · 2014: 9 · 2013: 1
FWCI
12.78
Type
journal article
Language
en
Update notices
erratum (2014-12-01)
Open access
Locations
  • Molecular Metabolism (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, other-oa)
  • eScholarship (California Digital Library) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-sa)
  • IRIS UNIMORE (University of Modena and Reggio Emilia) (submittedVersion, cc-by-nc-sa)
  • Padua Research Archive (University of Padova) (submittedVersion)
Funders
  • European Commission (223576, 294777)
  • Italian Space Agency (ASI, project OSMA)
  • Italian Ministries of Health (Ricerca Finalizzata) and of Education, University and Research (PRIN, FIRB), NIA (2P01AG025532-06A1)
  • Cariparo Foundation (Padua)
  • Italian Association for Cancer Research (AIRC) and Telethon–Italy (GPP1005A, GGP11082)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
circadian rhythm, Bmal1, insulin sensitivity, glucose uptake, GLUT4, TBC1D1, pyruvate dehydrogenase, PDK4, PDP1, glucose oxidation, glycolysis, metabolome, conditional knockout mice

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