Human tissues share some age-linked patterns in DNA tags
A computational meta-analysis of more than 15,000 human methylation profiles across 17 tissues found both common and tissue-specific associations with age.
Limit: Differences in study age ranges affected how many age-linked DNA sites were detected
Stake: An author founded Altos Labs and holds patents with it. An author works for Novo Nordisk.
Edited by Boris Djordjevic · AgingResearch.News
Researchers analyzed 15,995 human samples from 17 tissues in a computational meta-analysis of 131 datasets. They examined DNA methylation, chemical tags attached to DNA that can influence gene activity.
Age was associated with both shared patterns and patterns specific to individual tissues. The analysis linked older age to shifts in methylation levels, greater variability and increasing disorder in methylation patterns across tissues. Researchers identified 37 DNA sites with age-associated methylation in at least 13 tissues. Most sites shared between tissue pairs had age associations in the same direction, although the extent of overlap varied.
Why it matters
Mapping DNA methylation across organs may help researchers investigate the molecular basis of human aging and identify potential biomarkers, as the authors propose.
Caveats
This cross-sectional analysis could not establish whether methylation changes caused aging. Differences in study design, including age ranges, partly affected how many age-linked sites researchers detected.
- Beneficial interventions
- Resources: datasets, atlases and tools
- DNA methylation
- NAD+ metabolism
- Conserved age-associated methylation hub across tissues
- Humans
The paper
Meta-analysis of DNA methylation aging signatures in 17 human tissues
Australian Regenerative Medicine Institute
Nature Aging, Jun 26, 2026, Open access
