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E-GEOD-68429

ABSTRACT: Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity [BAT]

OTHER RELATED OMICS DATASETS IN: PRJNA282719PRJNA282723PRJNA282744PRJNA289018

PROVIDER: E-GEOD-68429 | ExpressionAtlas | 2016-01-08

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-68429-analysis-methods.tsv	Tabular
	E-GEOD-68429-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-68429-configuration.xml	Xml
	E-GEOD-68429-percentile-ranks.tsv	Tabular
	E-GEOD-68429.condensed-sdrf.tsv	Tabular

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E-GEOD-68382

Project description:Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity [IWAT]

2016-01-08 | E-GEOD-68382 | ExpressionAtlas

Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity

Project description:Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity

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Project description:Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity [BAT]

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Mus musculus

Project description:Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity [IWAT]

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Ablation of TET proteins in adipocytes protects against adiposity and metabolic dysfunction by potentiating energy expenditure

Project description:Ten-eleven translocation (TET) proteins oxidize 5-methylcytosine in DNA to 5- hydroxymethylcytosine and further oxidized derivatives. Here we show that TET proteins are key epigenetic suppressors of adipocyte thermogenesis and energy expenditure in both white and brown adipose tissues in vivo. Tet expression in adipocytes decreases upon cold or adrenergic stimulation but increases following high-fat diet (HFD) consumption. Mice with triple deletion of all three Tet genes in adipocytes have higher energy expenditure due to enhanced fat browning and thermogenesis. They also show significantly enhanced lipolysis because of elevated expression of Adrb3 and key lipases including Atgl and Hsl. Consequently, the knockout mice display improved cold tolerance and are substantially resistant to obesity, inflammation, and associated metabolic complications including insulin resistance. Mechanistically, TET deficiency substantially prevents the HFD-induced transcriptional alterations in adipose tissues. TET proteins recruit histone deacetylases (HDACs) to the key thermogenic gene loci including Adrb3, Ppargc1a, and Ucp1, leading to transcriptional repression through histone deacetylation. Thus, the TET-HDAC axis may be therapeutically targeted to treat obesity and related metabolic diseases.

2021-11-01 | GSE178762 | GEO

Autotaxin and its product lysophosphatidic acid suppress brown adipose differentiation and promote diet-induced obesity in mice

Project description:Brown adipose tissue (BAT) is a thermogenic organ that dissipates stored energy as heat to maintain body temperature in infants and small mammals. This process may also provide protection from development of diet-induced obesity. We found that the bioactive lipid mediator lysophosphatidic acid (LPA) markedly decreases differentiation of cultured primary brown adipocyte precursors, while potent selective inhibitors of the LPA-generating enzyme autotaxin (ATX) promote differentiation. Transgenic mice overexpressing ATX exhibited reduced expression of BAT-related genes in peripheral white adipose tissue and accumulated significantly more fat than wild-type controls when fed a high fat diet. Our results indicate that ATX and its product LPA are physiologically relevant negative regulators of brown fat adipogenesis and suggest that a decrease in peripheral brown adipose tissue results in increased susceptibility to diet-induced obesity in mice.

2011-06-01 | GSE26442 | GEO

Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity [BAT]

Project description:Analysis of brown adipose tissue from Yin Yang 1 (YY1) brown fat specific knockout mice fed a high fat diet for 3 months. YY1 deficiency in brown adipose tissue leads to strong thermogenic deficiency. The goal was to identify the genes controlled by YY1 responsible of brown fat defective function. Control mice YY1flox/flox versus YY1flox/flox; Ucp1Cre were fed a high fat diet for 3 months

2015-11-10 | E-GEOD-68429 | biostudies-arrayexpress

Brown Adipose YY1 Deficiency Activates Expression of Secreted Proteins Linked to Energy Expenditure and Prevents Diet-Induced Obesity [BAT]

2015-11-10 | GSE68429 | GEO

Paternal cold exposure enhances brown adipose tissue sensitivity in offspring and ameliorates diet induced obesity

Project description:Research in recent years has focused on environmental effects that control tissue functionality and systemic metabolism. We show here in a retrospective analysis that presence of brown adipocytes and date of birth are correlated and linked to BMI. In a mouse model system, we demonstrate that pre-conception cold exposure leads to improved systemic metabolism and protects from diet induced obesity, through the sperm via the paternal lineage. Using a brown fat ablation model, we show that this effect is mediated by brown adipose tissue. Furthermore, through RNAseq and DNA methylation analysis we identify Adrb3 as a putative signaling mechanism which could mediate the effects of pre-conception cold exposure and could account for the heterogeneity of brown adipose tissue responsiveness. Taken together, our results identify paternal cold exposure as a stimulus which induces a hyper-active state in brown adipose tissue leading to improved adaptation to overnutrition and hypothermia in the offspring.

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STAT5 is required for lipid breakdown and beta-adrenergic responsiveness of brown adipose tissue

Project description:Increasing energy expenditure through activation of brown adipose tissue (BAT) thermogenesis is an attractive approach to counteract obesity. Thus, it is essential to understand molecular mechanisms that control BAT functions. Here, we describe signal transducer and activator of transcription (STAT) 5 as key regulator of BAT functionality. We found that STAT5 is necessary for acute cold-induced temperature maintenance and stimulated lipid breakdown in BAT using mice that harbour an adipocyte-specific deletion of Stat5a/b genes. In addition, the mitochondrial respiratory capacity of primary differentiated brown adipocytes from STAT5 deficient mice was diminished. We show that increased sensitivity to cold stress upon STAT5 deficiency was associated with reduced expression of thermogenic key player uncoupling protein 1, while decreased stimulated lipolysis of STAT5-deficient BAT explants was linked to decreased protein kinase A activity. In addition, brown remodeling of white fat was diminished following chronic β-adrenergic stimulation. This impairment was linked to a decrease in mitochondrial functionality. We conclude that STAT5 is essential for the β-adrenergic responsiveness of brown adipose tissue and the physiologic function of thermogenic adipose tissue.

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