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Mouse gut metagenome

ABSTRACT: Bacterial 16S rRNA gene sequencing of mice fed normal diet (ND), high fat diet (HFD) or HFD supplemented with vancomycin in drinking water (HFD+VCM)

PROVIDER: PRJDB2724 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR006503_1.fastq.gz	Fastqsanger.gz
	DRR006503_2.fastq.gz	Fastqsanger.gz
	DRR006504_1.fastq.gz	Fastqsanger.gz
	DRR006504_2.fastq.gz	Fastqsanger.gz
	DRR006505_1.fastq.gz	Fastqsanger.gz

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Project description:Folic acid (FA) supplementation may protect from obesity and insulin resistance, the effects and mechanism of FA on chronic high-fat-diet-induced obesity-related metabolic disorders are not well elucidated. We adopted a genome-wide approach to directly examine whether FA supplementation affects the DNA methylation profile of mouse adipose tissue and identify the functional consequences of these changes. Mice were fed a high-fat diet (HFD), normal diet (ND) or an HFD supplemented with folic acid (20 μg/ml in drinking water) for 10 weeks, epididymal fat was harvested, and genome-wide DNA methylation analyses were performed using methylated DNA immunoprecipitation sequencing (MeDIP-seq). Mice exposed to the HFD expanded their adipose mass, which was accompanied by a significant increase in circulating glucose and insulin levels. FA supplementation reduced the fat mass and serum glucose levels and improved insulin resistance in HFD-fed mice. MeDIP-seq revealed distribution of differentially methylated regions (DMRs) throughout the adipocyte genome, with more hypermethylated regions in HFD mice. Methylome profiling identified DMRs associated with 3787 annotated genes from HFD mice in response to FA supplementation. Pathway analyses showed novel DNA methylation changes in adipose genes associated with insulin secretion, pancreatic secretion and type 2 diabetes. The differential DNA methylation corresponded to changes in the adipose tissue gene expression of Adcy3 and Rapgef4 in mice exposed to a diet containing FA. FA supplementation improved insulin resistance, decreased the fat mass, and induced DNA methylation and gene expression changes in genes associated with obesity and insulin secretion in obese mice fed a HFD.

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