Journal
NATURE REVIEWS ENDOCRINOLOGY
Volume 16, Issue 9, Pages 519-533Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41574-020-0370-8
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Funding
- BBSRC/ESRC [ES/N000471/1]
- Israel Science Foundation [1850/17, 1782/17]
- ESRC [ES/N000471/1] Funding Source: UKRI
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Reproductive function adjusts in response to environmental conditions in order to optimize success. In humans, this plasticity includes age of pubertal onset, hormone levels and age at menopause. These reproductive characteristics vary across populations with distinct lifestyles and following specific childhood events, and point to a role for the early-life environment in shaping adult reproductive trajectories. Epigenetic mechanisms respond to external signals, exert long-term effects on gene expression and have been shown in animal and cellular studies to regulate normal reproductive function, strongly implicating their role in these adaptations. Moreover, human cohort data have revealed differential DNA methylation signatures in proxy tissues that are associated with reproductive phenotypic variation, although the cause-effect relationships are difficult to discern, calling for additional complementary approaches to establish functionality. In this Review, we summarize how adult reproductive function can be shaped by childhood events. We discuss why the influence of the childhood environment on adult reproductive function is an important consideration in understanding how reproduction is regulated and necessitates consideration by clinicians treating women with diverse life histories. The resolution of the molecular mechanisms responsible for human reproductive plasticity could also lead to new approaches for intervention by targeting these epigenetic modifications. This Review discusses the ways in which adult reproductive function can be shaped by childhood events and examines the evidence for the epigenetic regulation of key regulatory genes that govern the central control of reproduction.
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