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Identification of a natural beige adipose depot in mice

ABSTRACT: Identification of a natural beige adipose depot in mice

PROVIDER: PRJNA508971 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8308700.fastq.gz	Fastqsanger.gz
	SRR8308710.fastq.gz	Fastqsanger.gz
	SRR8308701.fastq.gz	Fastqsanger.gz
	SRR8308711.fastq.gz	Fastqsanger.gz
	SRR8308702.fastq.gz	Fastqsanger.gz

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Identification of a natural beige adipose depot in mice.

Project description:Beige fat is a potential therapeutic target for obesity and other metabolic diseases due to its inducible brown fat-like functions. Inguinal white adipose tissue (iWAT) can undergo robust brown remodeling with appropriate stimuli and is therefore widely considered as a representative beige fat depot. However, adipose tissues residing in different anatomic depots exhibit a broad range of plasticity, raising the possibility that better beige fat depots with greater plasticity may exist. Here we identified and characterized a novel, naturally-existing beige fat depot, thigh adipose tissue (tAT). Unlike classic WATs, tAT maintains beige fat morphology at room temperature, whereas high-fat diet (HFD) feeding or aging promotes the development of typical WAT features, namely unilocular adipocytes. The brown adipocyte gene expression in tAT is consistently higher than in iWAT under cold exposure, HFD feeding, and rosiglitazone treatment conditions. Our molecular profiling by RNA-Seq revealed up-regulation of energy expenditure pathways and repressed inflammation in tAT relative to eWAT and iWAT. Furthermore, we demonstrated that the master fatty acid oxidation regulator peroxisome proliferator-activated receptor α is dispensable for maintaining and activating the beige character of tAT. Therefore, we have identified tAT as a natural beige adipose depot in mice with a unique molecular profile that does not require peroxisome proliferator-activated receptor α.

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Project description:We isolated fat depots from mice, and compared their transcriptome. Hoang, Anh C., Haidong Yu, and Tamás Röszer. 2021. "Transcriptional Landscaping Identifies a Beige Adipocyte Depot in the Newborn Mouse" Cells 10, no. 9: 2368.

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EBF2 promotes the recruitment of beige adipocytes in white adipose tissue

Project description:The induction of beige/brite adipose cells in white adipose tissue (WAT) is associated with protection against high fat diet-induced obesity and insulin resistance in animals. The helix-loop-helix transcription factor Early B-Cell Factor-2 (EBF2) regulates brown adipose tissue development. We examined the role of EBF2 in beige fat cell biogenesis by comparing transcriptome in wildtype and EBF2-overexpressing mice in the adipose tissue. Four control replicates (wildtype) and four experimental replicates (Fabp4-Ebf2) mice were analyzed

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Project description:Case story. A patient with massive infiltration of the visceral adipose tissue depot by BAT in a patient with a catecholamine secreting paraganglioma. BAT tissue was identified by protein expression of UCP1 (western blotting and immunostaining) The goal of the study is to identify patterns of gene expression in BAT containing visceral fat compared to the patient's own subcutanous fat which did not express BAT. For comparison a pool of mRNA isolated from visceral fat from obese subjects was used. Patient Case, Gene expression array from a biopsy from the patient's visceral fat and a biopsy from the subcutaneous fat compared to one array of mRNA from the visceral depot pooled from a group of obese subjects

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Project description:Since brown adipose tissue (BAT) dissipates energy through UCP1, BAT has garnered attention as a therapeutic intervention for obesity and metabolic diseases including type 2 diabetes. As we better understand the roles of classical brown and beige adipocytes, increased beige fat mass in response to a variety of external/internal cues is associated with significant improvements in glucose and lipid homeostasis that may not be entirely mediated by UCP1. We aim to analyze transcriptome of wild type and UCP1-null beige adipocyte to identify the UCP1-independent function.

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