Cited by 389Circadian rhythm and melatoninMuscle Physiology and DisordersAdipose Tissue and Metabolism

CLOCK and BMAL1 regulate MyoD and are necessary for maintenance of skeletal muscle phenotype and function

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Andrews, Jessica L., Zhang, Xiping, McCarthy, John J., McDearmon, Erin L., Hornberger, Troy A., Russell, Brenda, Campbell, Kenneth S., Arbogast, Sandrine +5 more·2010·Proceedings of the National Academy of Sciences

Abstract

MyoD , a master regulator of myogenesis, exhibits a circadian rhythm in its mRNA and protein levels, suggesting a possible role in the daily maintenance of muscle phenotype and function. We report that MyoD is a direct target of the circadian transcriptional activators CLOCK and BMAL1, which bind in a rhythmic manner to the core enhancer of the MyoD promoter. Skeletal muscle of Clock Δ19 and Bmal1 −/− mutant mice exhibited ∼30% reductions in normalized maximal force. A similar reduction in force was observed at the single-fiber level. Electron microscopy (EM) showed that the myofilament architecture was disrupted in skeletal muscle of Clock Δ19 , Bmal1 −/− , and MyoD −/− mice. The alteration in myofilament organization was associated with decreased expression of actin, myosins, titin, and several MyoD target genes. EM analysis also demonstrated that muscle from both Clock Δ19 and Bmal1 −/− mice had a 40% reduction in mitochondrial volume. The remaining mitochondria in these mutant mice displayed aberrant morphology and increased uncoupling of respiration. This mitochondrial pathology was not seen in muscle of MyoD −/− mice. We suggest that altered expression of both Pgc-1α and Pgc-1β in Clock Δ19 and Bmal1 −/− mice may underlie this pathology. Taken together, our results demonstrate that disruption of CLOCK or BMAL1 leads to structural and functional alterations at the cellular level in skeletal muscle. The identification of MyoD as a clock-controlled gene provides a mechanism by which the circadian clock may generate a muscle-specific circadian transcriptome in an adaptive role for the daily maintenance of adult skeletal muscle.

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Authors
Andrews, J. L., Zhang, X., McCarthy, J. J., McDearmon, E. L., Hornberger, T. A., Russell, B., Campbell, K. S., Arbogast, S., Reid, M. B., Walker, J. R., Hogenesch, J. B., Takahashi, J. S., & Esser, K. A.
Affiliations
  • University of Illinois Chicago (US)
  • University of Kentucky (US)
  • Northwestern University (US)
  • Genomics Institute of the Novartis Research Foundation (US)
  • University of Pennsylvania (US)
Venue
Proceedings of the National Academy of Sciences
Published
2010-10-18
Volume
107
Issue
44
Pages
19090-19095
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2053866174
Cited by
389
References
49
Citations by year
2026: 30 · 2025: 29 · 2024: 31 · 2023: 28 · 2022: 36 · 2021: 26 · 2020: 25 · 2019: 19 · 2018: 27 · 2017: 23 · 2016: 32 · 2015: 20 · 2014: 19 · 2013: 17 · 2012: 15
FWCI
6.39
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health (5p50mh074924-05)
  • National Heart, Lung, and Blood Institute (HL45721, R01HL045721)
  • National Institute of Mental Health (U01MH061915, P50 MH-074924, U01 MH 61915)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R03AR053641, R21AR050717, AR050717, R01AR055246, AR-053641)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
circadian clock, clocks, Bmal1, MyoD, skeletal muscle, myogenesis, clock-controlled genes, mitochondrial dysfunction, uncoupled respiration, PGC-1α, PGC-1β, muscle force, muscle phenotype
MeSH terms
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, Animals, Gene Expression Regulation, Mice, Inbred BALB C, Mitochondria, Muscle, Transcription Factors, Trans-Activators, MyoD Protein, Mice, Knockout, Muscle, Skeletal, Gene Expression Profiling, Muscle Development, Mice, Electron Microscope Tomography, CLOCK Proteins, ARNTL Transcription Factors, Circadian Clocks

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