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@ARTICLE{Thrmann:212549,
author = {L. Thürmann and M. Klös and S. D. Mackowiak and M. Bieg
and T. Bauer$^*$ and N. Ishaque and M. Messingschlager and
C. Herrmann and S. Röder and M. Bauer and S. Schäuble and
E. Faessler and U. Hahn and D. Weichenhan$^*$ and O.
Mücke$^*$ and C. Plass$^*$ and M. Borte and E. von Mutius
and G. I. Stangl and R. Lauener and A. M. Karvonen and A.
Divaret-Chauveau and J. Riedler and J. Heinrich and M.
Standl and A. von Berg and B. Schaaf and G. Herberth and M.
Kabesch and R. Eils and S. Trump and I. Lehmann},
title = {{G}lobal hypomethylation in childhood asthma identified by
genome-wide {DNA}-methylation sequencing preferentially
affects enhancer regions.},
journal = {Allergy},
volume = {78},
number = {6},
issn = {0105-4538},
address = {Oxford},
publisher = {Wiley},
reportid = {DKFZ-2023-00234},
pages = {1489-1506},
year = {2023},
note = {2023 Jun;78(6):1489-1506},
abstract = {Childhood asthma is a result of a complex interaction of
genetic and environmental components causing epigenetic and
immune dysregulation, airway inflammation and impaired lung
function. Although different microarray based EWAS studies
have been conducted, the impact of epigenetic regulation in
asthma development is still widely unknown. We have
therefore applied unbiased whole genome bisulfite sequencing
(WGBS) to characterize global DNA-methylation profiles of
asthmatic children compared to healthy controls.Peripheral
blood samples of 40 asthmatic and 42 control children aged
5-15 years from three birth cohorts were sequenced together
with paired cord blood samples. Identified differentially
methylated regions (DMRs) were categorized in
genotype-associated, cell-type-dependent, or
prenatally-primed. Network analysis and subsequent natural
language processing of DMR-associated genes was complemented
by targeted analysis of functional translation of epigenetic
regulation on the transcriptional and protein level.In
total, 158 DMRs were identified in asthmatic children
compared to controls of which $37\%$ were related to the
eosinophil content. A global hypomethylation was identified
affecting predominantly enhancer regions and regulating key
immune genes such as IL4, IL5RA, and EPX. These DMRs were
confirmed in n=267 samples and could be linked to aberrant
gene expression. Out of the 158 DMRs identified in the
established phenotype, 56 were perturbed already at birth
and linked, at least in part, to prenatal influences such as
tobacco smoke exposure or phthalate exposure.This is the
first epigenetic study based on whole genome sequencing to
identify marked dysregulation of enhancer regions as a
hallmark of childhood asthma.},
keywords = {DNA-methylation (Other) / asthma (Other) / cord blood
(Other) / prenatal exposure (Other)},
cin = {B080 / B370},
ddc = {610},
cid = {I:(DE-He78)B080-20160331 / I:(DE-He78)B370-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36704932},
doi = {10.1111/all.15658},
url = {https://inrepo02.dkfz.de/record/212549},
}