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Living long and ageing well: is epigenomics the missing link between nature and nurture?

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Abstract

Human longevity is a complex trait and increasingly we understand that both genes and lifestyle interact in the longevity phenotype. Non-genetic factors, including diet, physical activity, health habits, and psychosocial factors contribute approximately 50 % of the variability in human lifespan with another 25 % explained by genetic differences. Family clusters of nonagenarian and centenarian siblings, who show both exceptional age-span and health-span, are likely to have inherited facilitatory gene groups, but also have nine decades of life experiences and behaviours which have interacted with their genetic profiles. Identification of their shared genes is just one small step in the link from genes to their physical and psychological profiles. Behavioural genomics is beginning to demonstrate links to biological mechanisms through regulation of gene expression, which directs the proteome and influences the personal phenotype. Epigenetics has been considered the missing link between nature and nurture. Although there is much that remains to be discovered, this article will discuss some of genetic and environmental factors which appear important in good quality longevity and link known epigenetic mechanisms to themes identified by nonagenarians themselves related to their longevity. Here we suggest that exceptional 90-year old siblings have adopted a range of behaviours and life-styles which have contributed to their ageing-well-phenotype and which link with important public health messages.

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Acknowledgments

The Super Vivere-ACUME2 project group include: Claudio Franceschi, University of Bologna, Italy, Vita Fortunati University of Bologna, Italy, Laura Celani, University of Bologna, Elisa Cevenni, University of Bologna, Antii Hervonen, Tampere School of Public Health, Finland, Anna Numminen, Tampere School of Public Health, Finland, Oskar Virras, Tampere School of Public Health, Finland, Ewa Sikora, Nencki Institute of Experimental Biology, Warsaw, Poland, Karsa Broczek, Nencki Institute of Experimental Biology, Warsaw, Poland, Irene Maeve Rea, Queens University Belfast and University of Ulster.

The authors thank Research Officer Ms Anne Murphy, and the BELFAST nonagenarian subjects who willingly participated in this study.

Funding

The study was funded in part by EU Socrates Erasmus Programme for Thematic Network, Interfacing Science, Literature and Humanities ACUME2 (227942-CP-1-2006-1-IT-ERASMUS-TN2006-2371/001 SO2-23RETH), Atlantic Philanthropies, Changing Ageing Partnership Grant, Queens Foundation Trust (R9158PHM) (IMR), Wellcome Trust Project Grant (045519/Z/95/Z) (IMR), Eastern Health and Social Care Board Research Fellowship Grant (IMR) and Belfast Trust Fund (Research and Education into Ageing (0-132) (IMR).

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Correspondence to Irene Maeve Rea.

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Rea, I.M., Dellet, M., Mills, K.I. et al. Living long and ageing well: is epigenomics the missing link between nature and nurture?. Biogerontology 17, 33–54 (2016). https://doi.org/10.1007/s10522-015-9589-5

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  • DOI: https://doi.org/10.1007/s10522-015-9589-5

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