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Mech Ageing Dev. 2018 Mar;170:2-9. doi: 10.1016/j.mad.2017.07.001. Epub 2017 Jul 5.

Stress, cell senescence and organismal ageing.

Author information

1
Integrative Genomics of Ageing Group, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool L7 8TX, United Kingdom. Electronic address: jp@senescence.info.
2
Institute for Cell and Molecular Biosciences & Newcastle University Institute for Ageing, Newcastle upon Tyne NE4 5PL, United Kingdom. Electronic address: joao.passos@newcastle.ac.uk.

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.

KEYWORDS:

Biogerontology; Drugs; Lifespan; Longevity; Telomeres

PMID:
28688962
DOI:
10.1016/j.mad.2017.07.001
[Indexed for MEDLINE]
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