Cited by 321Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsSirtuins and Resveratrol in Medicine

The DOI matches its Crossref record; 120 of the 122 references it cites were found in a registry or an index; none of the 43 sources its claims cite is checked for support yet.

Stress, cell senescence and organismal ageing

Open access
de Magalhães, João Pedro, Passos, João F.·2018·Mechanisms of Ageing and Development

Abstract

Cellular senescence was first described by Hayflick and Moorhead in the 1960s as the irreversible arrest of cells following prolonged cultivation. Telomere shortening is the key mechanism driving replicative senescence in human fibroblasts. Later, pioneering work by Olivier Toussaint and others showed that stress plays a major role in the induction of senescence in vitro, a phenomenon known as stress-induced premature senescence or SIPS. It is also now widely accepted that senescence plays a role in vivo. An emerging body of evidence from animal models, and particularly mice, has demonstrated an important role for senescence in several processes such as embryonic development, wound healing, tumour suppression and ageing. However, mostly due to a lack of availability of tissues and specific markers, less is known about the importance of cell senescence in humans. In this review, we summarize some of the key findings in the field of senescence, stress-induced senescence and telomeres. We focus particularly on the role of telomere dysfunction and senescence during the ageing process as well as potential interventions, including pharmacological approaches like telomerase activators and senolytics, to counteract their detrimental effects in ageing and disease.

Overview

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TL;DR

This review summarizes cellular senescence, stress-induced premature senescence (SIPS), and telomere dysfunction, arguing that senescence may contribute to organismal ageing while human evidence remains limited. It discusses senolytics and SASP-suppressing drugs as potential interventions and highlights unresolved questions about causality and senescent-cell burden in human tissues.

Key findings

  • Replicative senescence in human fibroblasts is primarily driven by telomere shortening, and ectopic telomerase expression bypasses the senescence-induced arrest. SIPS can be induced by sublethal stress in 3–10 days with no or modest telomere shortening, but persistent telomeric DNA damage can occur independently of telomere length and telomerase, so some SIPS is telomere-dependent.
  • In vivo, telomere shortening occurs in some tissues and shows weak correlations with donor age; comparative data across over 60 mammalian species indicate that smaller, short-lived species tend to have long telomeres and high telomerase, and telomere length is not a limiting factor for lifespan. A human study of over 4000 people over 10 years found no association between telomere length changes and mortality or morbidity.
  • Senescent cells can be beneficial (tumour suppression, wound healing, embryonic development, insulin secretion) or detrimental via the SASP. Genetic clearance of senescent cells in mice delays age-related disorders, protects from cancer, and extends median but not maximum lifespan; senolytics such as dasatinib plus quercetin, ABT-263/ABT-737, and a FOXO4 peptide improve healthspan in mouse models.
  • A major challenge is the absence of a universal senescence marker; SA-β-gal has false positives, and the exact frequency of senescent cells in older tissues and healthy humans remains unknown.

Methods

  • Narrative review; no primary experiments or new data are reported.
  • Synthesizes published literature on cellular senescence, telomeres, SIPS, in vivo mouse models, comparative biology, and pharmacological interventions.
  • Main analysis is qualitative synthesis; no systematic search strategy, inclusion criteria, or meta-analysis is described.

Limitations

  • Stated in paper: lack of human tissues and specific markers limits knowledge of senescence in humans; most in vivo evidence comes from laboratory mice, which have known limitations; the exact frequency of senescent cells in older tissues and healthy humans is unknown; causality of senescence in ageing remains debated; and in vivo rates of occurrence and turnover of senescent cells are poorly understood.
  • Evident from text: as a narrative review, it does not systematically assess bias or quantify effect sizes, and many cited findings are from mouse models with uncertain translation to humans.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1016/j.mad.2017.07.001

Cites

120 of 120 references verified0 citation errors · 0 not checkable

Statistics

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Claims the paper makes

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  • It may state two separate claims as one. 14
  • Probably not a substantial claim. 5
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  • The paper relies on this without support.

    Findings from mouse models of senescence and ageing are informative about human ageing.

    “In this review, we summarize some of the key findings in the field of senescence, stress-induced senescence and telomeres.We focus particularly on the role of telomere dysfunction and senescence during the ageing process as well as potential interventions, including pharmacological approaches like telomerase activators and senolytics, to counteract their detrimental effects in ageing and disease.”
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Each contradiction between two passages listed here was confirmed by an independent check.

  • Conflicting conclusions about telomere length and species longevity

    Minor

    The paper first says there is no connection between mean telomere length and mammalian species longevity, but later concludes that longevity is strongly associated with the evolution of short telomeres.

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Metadata

Authors
de Magalhães, J. P., & Passos, J. F.
Affiliations
Newcastle University (GB)
Venue
Mechanisms of Ageing and Development
Publisher
Elsevier BV
Published
2018-03
Volume
170
Pages
2-9
ISSN
0047-6374 (ISSN-L)
OpenAlex
W2733273049
Cited by
316
References
122
Citations by year
2026: 17 · 2025: 37 · 2024: 28 · 2023: 31 · 2022: 43 · 2021: 44 · 2020: 55 · 2019: 40 · 2018: 17
FWCI
3.86
Type
journal article
Language
en
Open access
Locations
  • Mechanisms of Ageing and Development (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Newcastle University ePrints (Newcastle Univesity) (cc-by)
Funders
  • Wellcome Trust (104978, 104978/Z/14/Z, RPG-2016-015)
  • Methuselah Foundation
  • Leverhulme Trust (RPG‐2016‐015)
  • Medical Research Council (MR/L016354/1)
  • Biotechnology and Biological Sciences Research Council (BB/K017314/1, BB/H022384/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
Keywords
cellular senescence, stress-induced premature senescence, telomere shortening, telomere dysfunction, replicative senescence, senolytics, telomerase activators, tumor suppression, wound healing, embryonic development
MeSH terms
Aging, Humans, Neoplasms, Stress, Physiological, Wound Healing, Cellular Senescence, Embryonic Development, Telomere Homeostasis

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