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Liver DNA methylation of FADS2 associates with FADS2 genotype.


ABSTRACT: BACKGROUND:Non-alcoholic fatty liver disease has been associated with increased mRNA expression of FADS2 in the liver and estimated activity of delta-6 desaturase in serum, encoded by the FADS2 gene. Since DNA methylation in the FADS1/2/3 gene cluster has been previously linked with genetic variants and desaturase activities, we now aimed to discover factors regulating DNA methylation of the CpG sites annotated to FADS1/2 genes. METHODS:DNA methylation levels in the CpG sites annotated to FADS2 and FADS1 were analyzed from liver samples of 95 obese participants of the Kuopio Obesity Surgery Study (34 men and 61 women, age 49.5?±?7.7 years, BMI 43.0?±?5.7 kg/m2) using the Infinium HumanMethylation450 BeadChip (Illumina). Associations between DNA methylation levels and estimated delta-6 and delta-5 desaturase enzyme activities, liver histology, hepatic mRNA expression, FADS1/2 genotypes, and erythrocyte folate levels were analyzed. RESULTS:We found a negative correlation between DNA methylation levels of cg06781209 and cg07999042 and hepatic FADS2 mRNA expression (both p?

SUBMITTER: Walle P 

PROVIDER: S-EPMC6337806 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Liver DNA methylation of FADS2 associates with FADS2 genotype.

Walle Paula P   Männistö Ville V   de Mello Vanessa Derenji VD   Vaittinen Maija M   Perfilyev Alexander A   Hanhineva Kati K   Ling Charlotte C   Pihlajamäki Jussi J  

Clinical epigenetics 20190117 1


<h4>Background</h4>Non-alcoholic fatty liver disease has been associated with increased mRNA expression of FADS2 in the liver and estimated activity of delta-6 desaturase in serum, encoded by the FADS2 gene. Since DNA methylation in the FADS1/2/3 gene cluster has been previously linked with genetic variants and desaturase activities, we now aimed to discover factors regulating DNA methylation of the CpG sites annotated to FADS1/2 genes.<h4>Methods</h4>DNA methylation levels in the CpG sites anno  ...[more]

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