Abstract：
:Recently, a genome-wide analysis identified DNA methylation of the HIF3A (hypoxia-inducible factor 3A) as strongest correlate of BMI. Here we tested the hypothesis that HIF3A mRNA expression and CpG-sites methylation in adipose tissue (AT) and genetic variants in HIF3A are related to parameters of AT distribution and function. In paired samples of subcutaneous AT (SAT) and visceral AT (VAT) from 603 individuals, we measured HIF3A mRNA expression and analyzed its correlation with obesity and related traits. In subgroups of individuals, we investigated the effects on HIF3A genetic variants on its AT expression (N = 603) and methylation of CpG-sites (N = 87). HIF3A expression was significantly higher in SAT compared to VAT and correlated with obesity and parameters of AT dysfunction (including CRP and leucocytes count). HIF3A methylation at cg22891070 was significantly higher in VAT compared to SAT and correlated with BMI, abdominal SAT and VAT area. Rs8102595 showed a nominal significant association with AT HIF3A methylation levels as well as with obesity and fat distribution. HIF3A expression and methylation in AT are fat depot specific, related to obesity and AT dysfunction. Our data support the hypothesis that HIF pathways may play an important role in the development of AT dysfunction in obesity.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Pfeiffer S,Krüger J,Maierhofer A,Böttcher Y,Klöting N,El Hajj N,Schleinitz D,Schön MR,Dietrich A,Fasshauer M,Lohmann T,Dreßler M,Stumvoll M,Haaf T,Blüher M,Kovacs Pdoi
10.1038/srep27969subject
Has Abstractpub_date
2016-06-27 00:00:00pages
27969issn
2045-2322pii
srep27969journal_volume
6pub_type
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