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2015 ; 16
(1
): 194
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The senescent methylome and its relationship with cancer, ageing and germline
genetic variation in humans
#MMPMID26381124
Genome Biol
2015[Sep]; 16
(1
): 194
PMID26381124
show ga
BACKGROUND: Cellular senescence is a stable arrest of proliferation and is
considered a key component of processes associated with carcinogenesis and other
ageing-related phenotypes. Here, we perform methylome analysis of actively
dividing and deeply senescent normal human epithelial cells. RESULTS: We identify
senescence-associated differentially methylated positions (senDMPs) from multiple
experiments using cells from one donor. We find that human senDMP epigenetic
signatures are positively and significantly correlated with both cancer and
ageing-associated methylation dynamics. We also identify germline genetic
variants, including those associated with the p16INK4A locus, which are
associated with the presence of in vivo senDMP signatures. Importantly, we also
demonstrate that a single senDMP signature can be effectively reversed in a
newly-developed protocol of transient senescence reversal. CONCLUSIONS: The
senDMP signature has significant potential for understanding some of the key
(epi)genetic etiological factors that may lead to cancer and age-related diseases
in humans.