Cited by 759Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsMitochondrial Function and Pathology

Linking functional decline of telomeres, mitochondria and stem cells during ageing

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Sahin, Ergün, DePinho, Ronald A.·2010·Nature

Abstract

The study of human genetic disorders and mutant mouse models has provided evidence that genome maintenance mechanisms, DNA damage signalling and metabolic regulation cooperate to drive the ageing process. In particular, age-associated telomere damage, diminution of telomere 'capping' function and associated p53 activation have emerged as prime instigators of a functional decline of tissue stem cells and of mitochondrial dysfunction that adversely affect renewal and bioenergetic support in diverse tissues. Constructing a model of how telomeres, stem cells and mitochondria interact with key molecules governing genome integrity, 'stemness' and metabolism provides a framework for how diverse factors contribute to ageing and age-related disorders.

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  • Telomerase activity and recombination-based processes that maintain telomere length are critical for tissue homeostasis.

    “telomerase activity and recombination‐based processes that maintain telomere length are critical for tissue homeostasis (Sahin & Depinho, 2010).”

    From P66SHC deletion improves fertility and progeric phenotype of late-generation TERC-deficient mice but not their short lifespan (2016) · cites this paper as Sahin & Depinho, 2010

    The ‘Telomeres and ageing’ section says telomerase maintains telomeres and links adequate telomerase activity and telomere length to ageing; it also describes organ dysfunction associated with telomere-maintenance defects. But the paper does not identify recombination-based telomere-length maintenance as critical for tissue homeostasis. Its References annotation instead describes telomerase as preventing end-to-end recombination. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Age-progressive loss of telomere function in mice provokes widespread p53 activation resulting in activation of cellular checkpoints of apoptosis, impaired proliferation and senescence, compromised tissue stem cell and progenitor function, marked tissue atrophy and physiological impairment in many organ systems.

    “Of particular relevance to this study, age-progressive loss of telomere function in mice has been shown to provoke widespread p53 activation resulting in activation of cellular checkpoints of apoptosis, impaired proliferation and senescence, compromised tissue stem cell and progenitor function, marked tissue atrophy and physiological impairment in many organ systems 1 , 6 .”
  • Telomere loss and uncapping provokes progressive tissue atrophy, stem cell depletion, organ system failure, and impaired tissue injury responses.

    “Telomere loss and uncapping provokes progressive tissue atrophy, stem cell depletion, organ system failure, and impaired tissue injury responses 1 .”
  • Immune ageing involves fewer stem cells, changed T-cell production, weaker B-cell antibody responses, and less phagocytosis by neutrophils, macrophages and natural killer cells.

    “The ageing immune system is characterised by a decline in stem cells, alterations in T-lymphocyte production, blunting of the B-cell led antibody response and reduced phagocytic activity of neutrophils, macrophages and natural killer cells (50, 51).”

    From Frailty in elderly people (2013) · cites this paper as [50]

  • An aged immune system may work well at rest but respond poorly to acute inflammatory stress.

    “This senescent immune system may function adequately in the quiescent state but fail to respond appropriately to the stress of acute inflammation (50).”

    From Frailty in elderly people (2013) · cites this paper as [50]

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Authors
Sahin, E., & DePinho, R. A.
Affiliations
Harvard University (US)
Venue
Nature
Published
2010-03
Volume
464
Issue
7288
Pages
520-528
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1988354925
Cited by
759
References
100
Citations by year
2026: 15 · 2025: 31 · 2024: 43 · 2023: 38 · 2022: 34 · 2021: 41 · 2020: 34 · 2019: 38 · 2018: 39 · 2017: 42 · 2016: 48 · 2015: 54 · 2014: 53 · 2013: 55 · 2012: 83
FWCI
7.97
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
National Cancer Institute (U01CA84313, U01CA084313, R01CA84628, R01CA084628)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
aging, telomeres, telomere dysfunction, telomere capping, p53 activation, DNA damage signaling, genome maintenance, mitochondrial dysfunction, tissue stem cells, stemness, bioenergetics, metabolic regulation, age-related diseases
MeSH terms
Aging, Animals, Hematopoietic System, Homeostasis, Humans, Mitochondria, Phenotype, Stem Cells, Tumor Suppressor Protein p53, Telomere, Genome, Telomerase

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