alexa Telomere dysfunction and stem cell ageing.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Thyroid Disorders & Therapy

Author(s): Ju Z, Lenhard Rudolph K, Ju Z, Lenhard Rudolph K

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Abstract Ageing is characterized by a decline in organ maintenance and repair. Adult stem cells contribute to tissue repair and organ maintenance. Thus it is conceivable that ageing is partly due to a decline of stem cell function. At molecular level, ageing is associated with an accumulation of damage affecting DNA, proteins, membranes, and organelles, as well as the formation of insoluble protein aggregates. Telomere shortening represents a cell intrinsic mechanism, which contributes to the accumulation of DNA damage during cellular ageing. Telomere dysfunction in response to critical telomere shortening induces DNA damage checkpoints that lead to cell cycle arrest and/or cell death. Checkpoint responses induced by telomere dysfunction have mostly been studied in somatic cells but there are emerging data on cell intrinsic checkpoints that impair the maintenance and function of adult stem cell in response to telomere dysfunction. Moreover, telomere dysfunction induces alterations in the stem cell environment that limit the function of adult stem cells. In this review we summarize our current knowledge on the role of telomere dysfunction in adult stem cell ageing. This article was published in Biochimie and referenced in Journal of Thyroid Disorders & Therapy

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