Cytosine methylation dysregulation in neonates following intrauterine growth restriction.

PloS One
Francine H EinsteinJohn M Greally

Abstract

Perturbations of the intrauterine environment can affect fetal development during critical periods of plasticity, and can increase susceptibility to a number of age-related diseases (e.g., type 2 diabetes mellitus; T2DM), manifesting as late as decades later. We hypothesized that this biological memory is mediated by permanent alterations of the epigenome in stem cell populations, and focused our studies specifically on DNA methylation in CD34+ hematopoietic stem and progenitor cells from cord blood from neonates with intrauterine growth restriction (IUGR) and control subjects. Our epigenomic assays utilized a two-stage design involving genome-wide discovery followed by quantitative, single-locus validation. We found that changes in cytosine methylation occur in response to IUGR of moderate degree and involving a restricted number of loci. We also identify specific loci that are targeted for dysregulation of DNA methylation, in particular the hepatocyte nuclear factor 4alpha (HNF4A) gene, a well-known diabetes candidate gene not previously associated with growth restriction in utero, and other loci encoding HNF4A-interacting proteins. Our results give insights into the potential contribution of epigenomic dysregulation in media...Continue Reading

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Datasets Mentioned

BETA
GSE17727

Methods Mentioned

BETA
restriction digest
PCR
in vitro transcription

Software Mentioned

Ingenuity Pathway Analysis ( IPA
EpiTYPER
Ingenuity
Ingenuity Pathway Analysis ( IPA ) âCore Analysisâ
MassArray
Ingenuity Pathway Analysis ( IPA )
R package
IPA
UCSC Genome Browser
Ingenuity Pathway Analysis

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