Cited by 54Muscle Physiology and DisordersMitochondrial Function and PathologyNutrition and Health in Aging

Transient systemic mtDNA damage leads to muscle wasting by reducing the satellite cell pool

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Wang, Xiao, Pickrell, Alicia M., Rossi, Susana G., Pinto, Milena, Dillon, Lloye M., Hida, Aline, Rotundo, Richard L., Moraes, Carlos T.·2013·Human Molecular Genetics

Abstract

With age, muscle mass and integrity are progressively lost leaving the elderly frail, weak and unable to independently care for themselves. Defined as sarcopenia, this age-related muscle atrophy appears to be multifactorial but its definite cause is still unknown. Mitochondrial dysfunction has been implicated in this process. Using a novel transgenic mouse model of mitochondrial DNA (mtDNA) double-strand breaks (DSBs) that presents a premature aging-like phenotype, we studied the role of mtDNA damage in muscle wasting. We caused DSBs in mtDNA of adult mice using a ubiquitously expressed mitochondrial-targeted endonuclease, mito-PstI. We found that a short, transient systemic mtDNA damage led to muscle wasting and a decline in locomotor activity later in life. We found a significant decline in muscle satellite cells, which decreases the muscle's capacity to regenerate and repair during aging. This phenotype was associated with impairment in acetylcholinesterase (AChE) activity and assembly at the neuromuscular junction (NMJ), also associated with muscle aging. Our data suggests that systemic mitochondrial dysfunction plays important roles in age-related muscle wasting by preferentially affecting the myosatellite cell pool.

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  • Stress-induced damage to mitochondrial membranes contributes to sensitization of the mPTP.

    “Stress-induced damage to mitochondrial membranes (40, 108, 144, 147) contributes to sensitization of the mitochondrial permeability transition pore (mPTP) (44).”

    From Mitochondria initiate and regulate sarcopenia (2017) · cites this paper as [144]

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Authors
Wang, X., Pickrell, A. M., Rossi, S. G., Pinto, M., Dillon, L. M., Hida, A., Rotundo, R. L., & Moraes, C. T.
Affiliations
University of Miami (US)
Corresponding author
Moraes, Carlos T.
Venue
Human Molecular Genetics
Published
2013-06-10
Volume
22
Issue
19
Pages
3976-3986
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2155426150
Cited by
54
References
58
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 3 · 2017: 5 · 2016: 6 · 2015: 7 · 2014: 4 · 2013: 2
FWCI
2.83
Type
journal article
Language
en
Open access
Locations
  • Human Molecular Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association (11Pre7610007)
  • Muscular Dystrophy Association
  • National Institutes of Health
  • National Institute on Aging (AG036871, R01AG036871)
  • National Eye Institute (EY010804, R01EY010804)
  • National Institute of Neurological Disorders and Stroke (NS079965, U01NS057994, R01NS079965, NS057994)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
Keywords
sarcopenia, muscle atrophy, mitochondrial DNA damage, satellite cells, muscle regeneration, mitochondrial dysfunction, premature aging, acetylcholinesterase, neuromuscular junction, locomotor activity, aging
MeSH terms
Acetylcholinesterase, Animals, DNA Damage, DNA, Mitochondrial, Female, Male, Mice, Transgenic, Mitochondria, Muscle, Motor Activity, Neuromuscular Junction, Deoxyribonucleases, Type II Site-Specific, Oxidative Stress, Muscle, Skeletal, Molecular Chaperones, Satellite Cells, Skeletal Muscle, Mice, DNA Breaks, Double-Stranded, Sarcopenia

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