Influence of DNMT genotype on global and site specific DNA methylation patterns in neonates and pregnant women

PLoS One. 2013 Oct 1;8(10):e76506. doi: 10.1371/journal.pone.0076506. eCollection 2013.

Abstract

This study examines the relationship between common genetic variation within DNA methyltransferase genes and inter-individual variation in DNA methylation. Eleven polymorphisms spanning DNMT1 and DNMT3B were genotyped. Global and gene specific (IGF2, IGFBP3, ZNT5) DNA methylation was quantified by LUMA and bisulfite Pyrosequencing assays, respectively, in neonatal cord blood and in maternal peripheral blood. Associations between maternal genotype and maternal methylation (n (≈) 333), neonatal genotype and neonatal methylation (n (≈) 454), and maternal genotype and neonatal methylation (n (≈) 137) were assessed. The findings of this study provide some support to the hypothesis that genetic variation in DNA methylating enzymes influence DNA methylation at global and gene-specific levels; however observations were not robust to correction for multiple testing. More comprehensive analysis of the influence of genetic variation on global and site specific DNA methylation is warranted.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Cation Transport Proteins / genetics
  • CpG Islands
  • DNA (Cytosine-5-)-Methyltransferase 1
  • DNA (Cytosine-5-)-Methyltransferases / genetics*
  • DNA Methylation*
  • DNA Methyltransferase 3B
  • Female
  • Genetic Loci
  • Genotype*
  • Humans
  • Infant, Newborn
  • Insulin-Like Growth Factor Binding Protein 3 / genetics
  • Insulin-Like Growth Factor II / genetics
  • Linkage Disequilibrium
  • Polymorphism, Single Nucleotide
  • Pregnancy

Substances

  • Cation Transport Proteins
  • IGF2 protein, human
  • IGFBP3 protein, human
  • Insulin-Like Growth Factor Binding Protein 3
  • SLC30A5 protein, human
  • Insulin-Like Growth Factor II
  • DNA (Cytosine-5-)-Methyltransferase 1
  • DNA (Cytosine-5-)-Methyltransferases
  • DNMT1 protein, human