Cited by 81Telomeres, Telomerase, and SenescenceMuscle Physiology and DisordersCardiomyopathy and Myosin Studies

Telomere shortening and metabolic compromise underlie dystrophic cardiomyopathy

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Chang, Alex Chia Yu, Ong, Sang-Ging, LaGory, Edward L., Kraft, Peggy E., Giaccia, Amato J., Wu, Joseph C., Blau, Helen M.·2016·Proceedings of the National Academy of Sciences

Abstract

Significance: We have found that long telomeres protect mice from genetic cardiac diseases analogous to those found in humans, such as Duchenne muscular dystrophy (DMD). Mice lacking dystrophin, similar to patients with DMD, exhibit only mild disease. In contrast, mice that lack dystrophin and have “humanized” telomere lengths ( mdx 4cv /mTR G2 ) fully manifest both the severe human skeletal muscle wasting and cardiac failure typical of DMD. Remarkably, telomere shortening accompanies cardiac development even after cardiomyocyte division has ceased. This chronic proliferation-independent shortening in dystrophin-deficient cardiomyocytes is associated with induction of a DNA damage response, mitochondrial dysfunction, increased oxidative stress, and metabolic failure. Our findings highlight an interplay between telomere length and mitochondrial homeostasis in the etiology of dystrophic heart failure.

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Crossref · 10.1073/pnas.1615340113

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36 of 36 references verified0 citation errors · 0 not checkable

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  • In mouse models of accelerated telomere shortening, critically short telomeres repress PGC1-α- and β-mediated mitochondrial biogenesis.

    “In mouse models of accelerated telomere shortening, critically short telomeres have been shown to repress PGC1‐α‐ and β‐mediated mitochondrial biogenesis (Sahin et al, 2011; Chang et al, 2016).”

    From Length-independent telomere damage drives post-mitotic cardiomyocyte senescence (2019) · cites this paper as Chang et al, 2016

  • Mouse models of accelerated telomere shortening exhibit cardiac dysfunction.

    “Short telomeres have been observed in aged murine CMs (Rota et al, 2007) and in cardiomyocytes from individuals with end‐stage hypertrophic or dilated cardiomyopathy (Chang et al, 2018) and mouse models of accelerated telomere shortening exhibit cardiac dysfunction (Chang et al, 2016).”

    From Length-independent telomere damage drives post-mitotic cardiomyocyte senescence (2019) · cites this paper as Chang et al, 2016

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Authors
Chang, A. C. Y., Ong, S.-G., LaGory, E. L., Kraft, P. E., Giaccia, A. J., Wu, J. C., & Blau, H. M.
Affiliations
Stanford Medicine (US)
Venue
Proceedings of the National Academy of Sciences
Published
2016-10-31
Volume
113
Issue
46
Pages
13120-13125
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2543485777
Cited by
81
References
36
Citations by year
2026: 7 · 2025: 6 · 2024: 10 · 2023: 9 · 2022: 8 · 2021: 10 · 2020: 8 · 2019: 9 · 2018: 8 · 2017: 6
FWCI
6.17
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • California Institute for Regenerative Medicine (TT3-05501, RB5-07469)
  • HHS | National Institutes of Health (AG044815, AG009521, NS089533, AR063963, AG020961)
  • Gouvernement du Canada | Canadian Institutes of Health Research (201411MFE-338745-169197)
  • American Heart Association (13POST14480004, 15POST22940013)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiomyopathy and Myosin Studies
Keywords
dystrophic cardiomyopathy, dilated cardiomyopathy, Duchenne muscular dystrophy, telomere shortening, DNA damage response, p53, p21, mitochondrial biogenesis, oxidative stress, mitochondrial membrane potential, heart failure
MeSH terms
Animals, Cardiomyopathy, Dilated, Cell Cycle, DNA Damage, Male, Mice, Inbred C57BL, Mitochondria, Heart, Mitosis, Muscular Dystrophy, Animal, Reactive Oxygen Species, Mice, Knockout, Muscular Dystrophy, Duchenne, Myocytes, Cardiac, Cell Proliferation, Membrane Potential, Mitochondrial, Telomere Shortening

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