Epigenome-wide association study of leukocyte telomere length.

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ID: 21250
2019
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Abstract
Telomere length is associated with age-related diseases and is highly heritable. It is unclear, however, to what extent epigenetic modifications are associated with leukocyte telomere length (LTL). In this study, we conducted a large-scale epigenome-wide association study (EWAS) of LTL using seven large cohorts (n=5,713) - the Framingham Heart Study, the Jackson Heart Study, the Women's Health Initiative, the Bogalusa Heart Study, the Lothian Birth Cohorts of 1921 and 1936, and the Longitudinal Study of Aging Danish Twins. Our stratified analysis suggests that EWAS findings for women of African ancestry may be distinct from those of three other groups: males of African ancestry, and males and females of European ancestry. Using a meta-analysis framework, we identified DNA methylation (DNAm) levels at 823 CpG sites to be significantly associated (P<1E-7) with LTL after adjusting for age, sex, ethnicity, and imputed white blood cell counts. Functional enrichment analyses revealed that these CpG sites are near genes that play a role in circadian rhythm, blood coagulation, and wound healing. Weighted correlation network analysis identified four co-methylation modules associated with LTL, age, and blood cell counts. Overall, this study reveals highly significant relationships between two hallmarks of aging: telomere biology and epigenetic changes.
Reference Key
lee2019epigenomewideaging Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lee, Yunsung;Sun, Dianjianyi;Ori, Anil P S;Lu, Ake T;Seeboth, Anne;Harris, Sarah E;Deary, Ian J;Marioni, Riccardo E;Soerensen, Mette;Mengel-From, Jonas;Hjelmborg, Jacob;Christensen, Kaare;Wilson, James G;Levy, Daniel;Reiner, Alex P;Chen, Wei;Li, Shengxu;Harris, Jennifer R;Magnus, Per;Aviv, Abraham;Jugessur, Astanand;Horvath, Steve;
Journal Aging
Year 2019
DOI
10.18632/aging.102230
URL
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