Maternal educational attainment in pregnancy and epigenome-wide DNA methylation changes in the offspring from birth until adolescence
- PMID: 38052982
- PMCID: PMC11116099
- DOI: 10.1038/s41380-023-02331-5
Maternal educational attainment in pregnancy and epigenome-wide DNA methylation changes in the offspring from birth until adolescence
Abstract
Maternal educational attainment (MEA) shapes offspring health through multiple potential pathways. Differential DNA methylation may provide a mechanistic understanding of these long-term associations. We aimed to quantify the associations of MEA with offspring DNA methylation levels at birth, in childhood and in adolescence. Using 37 studies from high-income countries, we performed meta-analysis of epigenome-wide association studies (EWAS) to quantify the associations of completed years of MEA at the time of pregnancy with offspring DNA methylation levels at birth (n = 9 881), in childhood (n = 2 017), and adolescence (n = 2 740), adjusting for relevant covariates. MEA was found to be associated with DNA methylation at 473 cytosine-phosphate-guanine sites at birth, one in childhood, and four in adolescence. We observed enrichment for findings from previous EWAS on maternal folate, vitamin-B12 concentrations, maternal smoking, and pre-pregnancy BMI. The associations were directionally consistent with MEA being inversely associated with behaviours including smoking and BMI. Our findings form a bridge between socio-economic factors and biology and highlight potential pathways underlying effects of maternal education. The results broaden our understanding of bio-social associations linked to differential DNA methylation in multiple early stages of life. The data generated also offers an important resource to help a more precise understanding of the social determinants of health.
© 2023. The Author(s).
Conflict of interest statement
The authors declare no competing interests.
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References
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- Alfano R, Guida F, Galobardes B, Chadeau-Hyam M, Delpierre C, Ghantous A, et al. Socioeconomic position during pregnancy and DNA methylation signatures at three stages across early life: epigenome-wide association studies in the ALSPAC birth cohort. Int J Epidemiol. 2019;48:30–44. doi: 10.1093/ije/dyy259. - DOI - PMC - PubMed
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- P30 ES025128/ES/NIEHS NIH HHS/United States
- R00 ES030400/ES/NIEHS NIH HHS/United States
- U24 ES028533/ES/NIEHS NIH HHS/United States
- T32 ES021432/ES/NIEHS NIH HHS/United States
- MC_PC_15018/MRC_/Medical Research Council/United Kingdom
- 873749/EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020)
- 733206/EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020)
- R24 ES028531/ES/NIEHS NIH HHS/United States
- 848158/EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020)
- G9815508/MRC_/Medical Research Council/United Kingdom
- P30 ES010126/ES/NIEHS NIH HHS/United States
- MC_PC_19009/MRC_/Medical Research Council/United Kingdom
- R01 ES025531/ES/NIEHS NIH HHS/United States
- 001/WHO_/World Health Organization/International