4.7 Article

Mapping DNA methylation across development, genotype and schizophrenia in the human frontal cortex

Journal

NATURE NEUROSCIENCE
Volume 19, Issue 1, Pages 40-+

Publisher

NATURE PUBLISHING GROUP
DOI: 10.1038/nn.4181

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Funding

  1. Lieber Institute for Brain Development
  2. [1R21MH102791]
  3. NATIONAL INSTITUTE OF MENTAL HEALTH [R21MH102791] Funding Source: NIH RePORTER

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DNA methylation (DNAm) is important in brain development and is potentially important in schizophrenia. We characterized DNAm in prefrontal cortex from 335 non-psychiatric controls across the lifespan and 191 patients with schizophrenia and identified widespread changes in the transition from prenatal to postnatal life. These DNAm changes manifest in the transcriptome, correlate strongly with a shifting cellular landscape and overlap regions of genetic risk for schizophrenia. A quarter of published genome-wide association studies (GWAS)-suggestive loci (4,208 of 15,930, P < 10(-100)) manifest as significant methylation quantitative trait loci (meQTLs), including 59.6% of GWAS-positive schizophrenia loci. We identified 2,104 CpGs that differ between schizophrenia patients and controls that were enriched for genes related to development and neurodifferentiation. The schizophrenia-associated CpGs strongly correlate with changes related to the prenatal-postnatal transition and show slight enrichment for GWAS risk loci while not corresponding to CpGs differentiating adolescence from later adult life. These data implicate an epigenetic component to the developmental origins of this disorder.

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