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Identification of dynamic glucocorticoid-induced methylation changes at the FKBP5 locus.
Clin. Epigenet. 11:83 (2019)
BackgroundEpigenetic mechanisms may play a major role in the biological embedding of early-life stress (ELS). One proposed mechanism is that glucocorticoid (GC) release following ELS exposure induces long-lasting alterations in DNA methylation (DNAm) of important regulatory genes of the stress response. Here, we investigate the dynamics of GC-dependent methylation changes in key regulatory regions of the FKBP5 locus in which ELS-associated DNAm changes have been reported.ResultsWe repeatedly measured DNAm in human peripheral blood samples from 2 independent cohorts exposed to the GC agonist dexamethasone (DEX) using a targeted bisulfite sequencing approach, complemented by data from Illumina 450K arrays. We detected differentially methylated CpGs in enhancers co-localizing with GC receptor binding sites after acute DEX treatment (1h, 3h, 6h), which returned to baseline levels within 23h. These changes withstood correction for immune cell count differences. While we observed main effects of sex, age, body mass index, smoking, and depression symptoms on FKBP5 methylation levels, only the functional FKBP5 SNP (rs1360780) moderated the dynamic changes following DEX. This genotype effect was observed in both cohorts and included sites previously shown to be associated with ELS.ConclusionOur study highlights that DNAm levels within regulatory regions of the FKBP5 locus show dynamic changes following a GC challenge and suggest that factors influencing the dynamics of this regulation may contribute to the previously reported alterations in DNAm associated with current and past ELS exposure.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Dna Methylation ; Fkbp5 ; Glucocorticoid Receptor ; Early-life Stress ; Targeted Bisulfite Sequencing ; Dexamethasone; Dna Methylation; Childhood Adversity; Life Events; Gene; Ctcf; Stress; Dexamethasone; Expression; Receptor; Binding
Language
Publication Year
2019
HGF-reported in Year
2019
ISSN (print) / ISBN
1868-7075
e-ISSN
1868-7083
Journal
Clinical Epigenetics
Quellenangaben
Volume: 11,
Issue: 1,
Article Number: 83
Publisher
Springer
Publishing Place
Berlin : Heidelberg
Reviewing status
Peer reviewed
Institute(s)
Institute of Computational Biology (ICB)
POF-Topic(s)
30205 - Bioengineering and Digital Health
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-503800-001
WOS ID
WOS:000468938900001
Scopus ID
85066400615
PubMed ID
31122292
Erfassungsdatum
2019-05-29