Cited by 155Epigenetics and DNA MethylationTelomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model Organisms

Dynamic DNA methylation during aging: A "prophet" of age-related outcomes

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Xiao, Fu-Hui, Wang, Hao-Tian, Kong, Qing-Peng·2019·Frontiers in Genetics

Abstract

The biological markers of aging used to predict physical health status in older people are of great interest. Telomere shortening, which occurs during the process of cell replication, was initially considered a promising biomarker for the prediction of age and age-related outcomes (e.g., diseases, longevity). However, the high instability in detection and low correlation with age-related outcomes limit the extension of telomere length to the field of prediction. Currently, a growing number of studies have shown that dynamic DNA methylation throughout human lifetime exhibits strong correlation with age and age-related outcomes. Indeed, many researchers have built age prediction models with high accuracy based on age-dependent methylation changes in certain CpG loci. For now, DNA methylation based on epigenetic clocks, namely epigenetic or DNA methylation age, serves as a new standard to track chronological age and predict biological age. Measures of age acceleration (Δage, DNA methylation age - chronological age) have been developed to assess the health status of a person. In addition, there is evidence that an accelerated epigenetic age exists in patients with certain age-related diseases (e.g., Alzheimer's disease, cardiovascular disease). In this review, we provide an overview of the dynamic signatures of DNA methylation during aging and emphasize its practical utility in the prediction of various age-related outcomes.

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  • Biological confounders known to affect epigenetic patterns such as age, sex, ethnicity, body mass index, smoking behavior or nutritional aspects may introduce critical biases limiting the interpretation of epigenetic data.

    “Biological confounders known to affect epigenetic patterns such as age (Xiao, Wang, & Kong, 2019), sex (Yousefi et al., 2015), ethnicity (Fraser, Lam, Neumann, & Kobor, 2012), body mass index (Sayols-Baixeras et al., 2017), smoking behavior (Li et al., 2018) or nutritional aspects (Gadecka & Bielak-Zmijewska, 2019) may introduce critical biases limiting the interpretation of epigenetic data.”

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Authors
Xiao, F.-H., Wang, H.-T., & Kong, Q.-P.
Affiliations
Chinese University of Hong Kong (HK)
Corresponding author
Kong, Qing-Peng
Venue
Frontiers in Genetics
Published
2019-02-18
Volume
10
Pages
107-107
ISSN
1664-8021 (ISSN-L)
OpenAlex
W2917732063
Cited by
140
References
112
Citations by year
2026: 9 · 2025: 11 · 2024: 24 · 2023: 23 · 2022: 27 · 2021: 28 · 2020: 11 · 2019: 6 · 2013: 1
FWCI
1.66
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Genetics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
DNA methylation, aging, epigenetic clocks, DNA methylation age, biological age, accelerated aging, telomere shortening, age-related diseases, Alzheimer's disease, cardiovascular disease, age prediction model, CpG sites, aging biomarkers

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