Cited by 131Mitochondrial Function and PathologyCardiovascular and exercise physiologyAdipose Tissue and Metabolism

The impact of exercise on mitochondrial dynamics and the role of Drp1 in exercise performance and training adaptations in skeletal muscle

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Moore, Timothy M., Zhou, Zhenqi, Cohn, Whitaker, Norheim, Frode, Lin, Amanda J., Kalajian, Nareg, Strumwasser, Alexander R., Cory, Kevin +15 more·2019·Molecular Metabolism

Abstract

Objective Mitochondria are organelles primarily responsible for energy production, and recent evidence indicates that alterations in size, shape, location, and quantity occur in response to fluctuations in energy supply and demand. We tested the impact of acute and chronic exercise on mitochondrial dynamics signaling and determined the impact of the mitochondrial fission regulator Dynamin related protein (Drp)1 on exercise performance and muscle adaptations to training. Methods Wildtype and muscle-specific Drp1 heterozygote (mDrp1 +/− ) mice, as well as dysglycemic (DG) and healthy normoglycemic men (control) performed acute and chronic exercise. The Hybrid Mouse Diversity Panel, including 100 murine strains of recombinant inbred mice , was used to identify muscle Dnm1L (encodes Drp1)-gene relationships. Results Endurance exercise impacted all aspects of the mitochondrial life cycle , i.e. fission-fusion, biogenesis, and mitophagy . Dnm1L gene expression and Drp1 Ser616 phosphorylation were markedly increased by acute exercise and declined to baseline during post-exercise recovery. Dnm1L expression was strongly associated with transcripts known to regulate mitochondrial metabolism and adaptations to exercise. Exercise increased the expression of DNM1L in skeletal muscle of healthy control and DG subjects, despite a 15% ↓( P = 0.01) in muscle DNM1L expression in DG at baseline. To interrogate the role of Dnm1L further, we exercise trained male mDrp1 +/− mice and found that Drp1 deficiency reduced muscle endurance and running performance, and altered muscle adaptations in response to exercise training. Conclusion Our findings highlight the importance of mitochondrial dynamics, specifically Drp1 signaling, in the regulation of exercise performance and adaptations to endurance exercise training.

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Crossref · 10.1016/j.molmet.2018.11.012

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Authors
Moore, T. M., Zhou, Z., Cohn, W., Norheim, F., Lin, A. J., Kalajian, N., Strumwasser, A. R., Cory, K., Whitney, K., Ho, T., Ho, T., Lee, J. L., Rucker, D. H., Shirihai, O., van der Bliek, A. M., Whitelegge, J. P., Seldin, M. M., Lusis, A. J., Lee, S., Drevon, C. A., Mahata, S. K., Turcotte, L. P., & Hevener, A. L.
Affiliations
  • University of Southern California (US)
  • University of California, Los Angeles (US)
  • University of Oslo (NO)
  • University of California San Diego (US)
Corresponding author
Hevener, Andrea L.
Venue
Molecular Metabolism
Publisher
Elsevier BV
Published
2019-03
Volume
21
Pages
51-67
ISSN
2212-8778 (ISSN-L)
OpenAlex
W2902937014
Cited by
131
References
79
Citations by year
2026: 16 · 2025: 20 · 2024: 14 · 2023: 17 · 2022: 17 · 2021: 16 · 2020: 22 · 2019: 9
FWCI
4.18
Type
journal article
Language
en
Open access
Locations
  • Molecular Metabolism (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • NORA - Norwegian Open Research Archives (submittedVersion, cc-by-nc-nd)
Funders
  • Institute of Basic Medical Sciences
  • National Institute on Aging (5P30AG028748)
  • National Aeronautics and Space Administration
  • Norges Forskningsråd
  • American College of Sports Medicine
  • National Institutes of Health (P30DK063491, U24DK097748, F31DK108657, DK109724, 5T32HD007228)
  • U.S. Department of Veterans Affairs (NCT01803568, I01BX000323, HL28481, HL30568)
  • Seventh Framework Programme (289511)
  • Clinical and Translational Science Institute, University of California, Los Angeles (ULTR000124)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
mitochondrial dynamics, Drp1, mitochondrial fission, mitochondrial fusion, mitophagy, mitochondrial biogenesis, exercise training, endurance exercise, skeletal muscle, exercise performance, dysglycemia, Hybrid Mouse Diversity Panel, mitochondrial metabolism
MeSH terms
Physical Functional Performance, Adaptation, Physiological, Adult, Aged, Animals, Blood Glucose, Female, Humans, Male, Mice, Inbred BALB C, Mice, Inbred C3H, Mice, Inbred C57BL, Microtubule-Associated Proteins, Middle Aged, Mitochondria, Phosphorylation, Physical Conditioning, Animal, Physical Endurance, Gene Deletion, Muscle, Skeletal, GTP Phosphohydrolases, Mitochondrial Proteins, Dynamins, Mice, Mitochondrial Dynamics

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