Journal Article DKFZ-2017-01611

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Environment-induced epigenetic reprogramming in genomic regulatory elements in smoking mothers and their children.

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2016
EMBO Press Heidelberg

Molecular systems biology 12(3), 861 ()
 GO

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Abstract: Epigenetic mechanisms have emerged as links between prenatal environmental exposure and disease risk later in life. Here, we studied epigenetic changes associated with maternal smoking at base pair resolution by mapping DNA methylation, histone modifications, and transcription in expectant mothers and their newborn children. We found extensive global differential methylation and carefully evaluated these changes to separate environment associated from genotype-related DNA methylation changes. Differential methylation is enriched in enhancer elements and targets in particular 'commuting' enhancers having multiple, regulatory interactions with distal genes. Longitudinal whole-genome bisulfite sequencing revealed that DNA methylation changes associated with maternal smoking persist over years of life. Particularly in children prenatal environmental exposure leads to chromatin transitions into a hyperactive state. Combined DNA methylation, histone modification, and gene expression analyses indicate that differential methylation in enhancer regions is more often functionally translated than methylation changes in promoters or non-regulatory elements. Finally, we show that epigenetic deregulation of a commuting enhancer targeting c-Jun N-terminal kinase 2 (JNK2) is linked to impaired lung function in early childhood.

Keyword(s): Chromatin ; Histones ; Mitogen-Activated Protein Kinase 9

Classification:

Contributing Institute(s):
  1. Theoretische Bioinformatik (B080)
  2. Epigenomik und Krebsrisikofaktoren (C010)
  3. Hochdurchsatz-Sequenzierung (W190)
  4. Microarray Unit (W110)
  5. Molekulare Genomanalyse (B050)
  6. Genomorganisation und Funktion (B066)
Research Program(s):
  1. 312 - Functional and structural genomics (POF3-312) (POF3-312)

Appears in the scientific report 2016
Database coverage:
Medline ; Creative Commons Attribution CC BY (No Version) ; DOAJ ; BIOSIS Previews ; Current Contents - Life Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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 Record created 2017-08-23, last modified 2024-02-28


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