Longevity briefs provides a short summary of a novel research, medicine, or technology that caught the attention of our researchers in Oxford, due to its potential to improve our health, wellbeing, and longevity.
Why is this research important: We know that epigenetic changes such asmethylation play an important role in ageing and the development of age-related diseases. However, the factors affecting stability and changes in methylation have rarely been examined over an extended period. To what extent do environmental factors contribute compared with genetic factors, and does this change over time?
What did the researchers do: In this study, researchers measured DNA methylation in the white blood cells of 53 pairs of ageing twins over a period of 10 years.
Key takeaway(s) from this research: Results suggested that genetic differences contribute relatively little tomethylation, and decreased across the decade. However, genetics made a large contribution to the stability of methylation – that is, the ability of environmental factors to cause methylation changes. The methylation sites most affected by genetics were those involved in inflammation and the immune system, while regions involved in stress response pathways were most responsive to environmental change.
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