4.5 Article

Counteracting aged DNA methylation states to combat ageing and age-related diseases

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出版社

ELSEVIER IRELAND LTD
DOI: 10.1016/j.mad.2022.111695

关键词

Epigenetics; DNA methylation; Ageing; Disease; Epigenetic clock

资金

  1. European Commission, Belgium, under the Seventh Framework (FP7) Programme of the European Union [HEALTH-F4 - 2008 - 200880 MARK-AGE]
  2. Sapienza University of Rome, Italy [RM120172AC70973A]

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DNA methylation plays a crucial role in age-related processes and diseases. Epigenetic age can accurately estimate biological age and predict the risk of chronic diseases and mortality. Recent evidence suggests that the rate of epigenetic aging can be slowed down or even reversed.
DNA methylation (DNAm) overwrites information about multiple extrinsic factors on the genome. Age is one of these factors. Age causes characteristic DNAm changes that are thought to be not only major drivers of normal ageing but also precursors to diseases, cancer being one of these. Although there is still much to learn about the relationship between ageing, age-related diseases and DNAm, we now know how to interpret some of the effects caused by age in the form of changes in methylation marks at specific loci. In fact, these changes form the basis of the so called epigenetic clocks, which translate the genomic methylation profile into an epigenetic age. Epigenetic age does not only estimate chronological age but can also predict the risk of chronic diseases and mortality. Epigenetic age is believed to be one of the most accurate metrics of biological age. Initial evidence has recently been gathered pointing to the possibility that the rate of epigenetic ageing can be slowed down or even reversed. In this review, we discuss some of the most relevant advances in this field. Expected outcome is that this approach can provide insights into how to preserve health and reduce the impact of ageing diseases in humans.

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