Format

Send to

Choose Destination
Int J Epidemiol. 2015 Aug;44(4):1211-23. doi: 10.1093/ije/dyv043. Epub 2015 May 5.

Early gestation as the critical time-window for changes in the prenatal environment to affect the adult human blood methylome.

Author information

1
Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands.
2
Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, Georgia USA.
3
Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands and.
4
Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands, Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York USA lumey@columbia.edu.

Abstract

BACKGROUND:

The manipulation of pregnancy diets in animals can lead to changes in DNA methylation with phenotypic consequences in the offspring. Human studies have concentrated on the effects of nutrition during early gestation. Lacking in humans is an epigenome-wide association study of DNA methylation in relation to perturbations in nutrition across all gestation periods.

METHODS:

We used the quasi-experimental setting of the Dutch famine of 1944-45 to evaluate the impact of famine exposure during specific 10-week gestation periods, or during any time in gestation, on genome-wide DNA methylation levels at age ∼ 59 years. In addition, we evaluated the impact of exposure during a shorter pre- and post-conception period. DNA methylation was assessed using the Illumina 450k array in whole blood among 422 individuals with prenatal famine exposure and 463 time- or sibling-controls without prenatal famine exposure.

RESULTS:

Famine exposure during gestation weeks 1-10, but not weeks 11-20, 21-30 or 31-delivery, was associated with an increase in DNA methylation of CpG dinucleotides cg20823026 (FAM150B), cg10354880 (SLC38A2) and cg27370573 (PPAP2C) and a decrease of cg11496778 (OSBPL5/MRGPRG) (P < 5.9 × 10(-7), PFDR < 0.031). There was an increase in methylation of TACC1 and ZNF385A after exposure during any time in gestation (P < 2.0 × 10(-7), PFDR = 0.034) and a decrease of cg23989336 (TMEM105) after exposure around conception. These changes represent a shift of 0.3-0.6 standard deviations and are linked to genes involved in growth, development and metabolism.

CONCLUSION:

Early gestation, and not mid or late gestation, is identified as a critical time-period for adult DNA methylation changes in whole blood after prenatal exposure to famine.

KEYWORDS:

DNA methylation, prenatal, Dutch Famine, Hunger Winter, exposure, nutrition

PMID:
25944819
PMCID:
PMC4588866
DOI:
10.1093/ije/dyv043
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Silverchair Information Systems Icon for PubMed Central
Loading ...
Support Center