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Journal Article

Systemic Age-Associated DNA Hypermethylation of ELOVL2 Gene: In Vivo and In Vitro Evidences of a Cell Replication Process

MPS-Authors

Bacalini, M. G.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Deelen, J.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Pirazzini, C.
Max Planck Institute for Biology of Ageing, Max Planck Society;

De Cecco, M.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Giuliani, C.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Lanzarini, C.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Ravaioli, F.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Marasco, E.
Max Planck Institute for Biology of Ageing, Max Planck Society;

van Heemst, D.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Suchiman, H. E.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Slieker, R.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Giampieri, E.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Recchioni, R.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Mercheselli, F.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Salvioli, S.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Vitale, G.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Olivieri, F.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Spijkerman, A. M.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Dolle, M. E.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Sedivy, J. M.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Castellani, G.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Franceschi, C.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Slagboom, P. E.
Max Planck Institute for Biology of Ageing, Max Planck Society;

Garagnani, P.
Max Planck Institute for Biology of Ageing, Max Planck Society;

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Citation

Bacalini, M. G., Deelen, J., Pirazzini, C., De Cecco, M., Giuliani, C., Lanzarini, C., et al. (2016). Systemic Age-Associated DNA Hypermethylation of ELOVL2 Gene: In Vivo and In Vitro Evidences of a Cell Replication Process. J Gerontol A Biol Sci Med Sci. doi:10.1093/gerona/glw185.

Abstract

Epigenetic remodeling is one of the major features of the aging process. We recently demonstrated that DNA methylation of ELOVL2 and FHL2 CpG islands is highly correlated with age in whole blood. Here we investigated several aspects of age-associated hypermethylation of ELOVL2 and FHL2 We showed that ELOVL2 methylation is significantly different in primary dermal fibroblast cultures from donors of different ages. Using epigenomic data from public resources, we demonstrated that most of the tissues show ELOVL2 and FHL2 hypermethylation with age. Interestingly, ELOVL2 hypermethylation was not found in tissues with very low replication rate. We demonstrated that ELOVL2 hypermethylation is associated with in vitro cell replication rather than with senescence. We confirmed intra-individual hypermethylation of ELOVL2 and FHL2 in longitudinally assessed participants from the Doetinchem Cohort Study. Finally we showed that, although the methylation of the two loci is not associated with longevity/mortality in the Leiden Longevity Study, ELOVL2 methylation is associated with cytomegalovirus status in nonagenarians, which could be informative of a higher number of replication events in a fraction of whole-blood cells. Collectively, these results indicate that ELOVL2 methylation is a marker of cell divisions occurring during human aging.