Cut-and-run sequencing of adipose Treg cells with anti-HIF-1α and anti-PPAR-γ antibodies
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE164256 | GEO | 2021/07/15
REPOSITORIES: GEO
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Project description:The goal of this study is to study mechanisms underlying how HIF-1α regulates adipose Treg function. Therefore, mRNA profiles of adipose Tregs (from 4-month old Foxp3Cre and Hif1afl/fl;Foxp3Cre mice) were generated by deep sequencing, single experiment, using Illumina HiSeq TEN. We compared gene expression profiles of adipose Tregs from Hif1afl/fl;Foxp3Cre and Foxp3Cre mice. Using unbiased comparative gene expression analyses, we found adipose HIF-1α-ΔTreg cells showed higher expression of Nt5e gene and simultaneously down-regulated canonical adipose Treg genes (including Pparg, Il1rl1, Klrg1, Areg). Therefore, these data suggested a dependency of HIF-1α on PPAR-γ expression in adipose Tregs.
2021-07-15 | GSE152082 | GEO
Project description:Cut-and-run sequencing of adipose Treg cells with anti-HIF-1α and anti-PPAR-γ antibodies
| PRJNA689723 | ENA
Project description:Obesity is a major risk factor for the development of insulin resistance and type II diabetes. The nuclear receptors PPAR delta and PPAR gamma play a central role in regulating metabolism in adipose tissue, as well as being targets for the treatment of insulin resistance. The metabolic effects of PPAR delta and PPAR gamma activation have been examined both in vivo in white adipose tissue from ob/ob mice and in vitro in cultured 3T3-L1 adipocytes using a combined 1H NMR spectroscopy and mass spectrometry metabolomic methodology to understand the contrasting roles of these receptors. These steady state measurements were supplemented with 13C-stable isotope substrate labeling to assess fluxes, respirometry and transcriptomic microarray analysis. The metabolic effects of the two receptors were readily distinguished, with PPAR gamma ?activation characterised by increased fat storage and fat synthesis/elongation, while activation of PPAR delta caused increased fatty acid beta-oxidation, TCA cycle rate and oxidation of extracellular branch chain amino acids. Stimulated glycolysis and increased desaturation of fatty acids were the only common pathways. PPAR delta has a role as an anti-obesity target as well as an anti-diabetic. Total RNA obtained from cultured 3T3-L1 cells treated for 48 hours with either DMSO control, GW610742 PPARd agonist or GW347845 PPARg agonist and compared.
2011-07-13 | E-GEOD-26207 | biostudies-arrayexpress
Project description:Obesity is a major risk factor for the development of insulin resistance and type II diabetes. The nuclear receptors PPAR-delta and PPAR-gamma play a central role in regulating metabolism in adipose tissue, as well as being targets for the treatment of insulin resistance. The metabolic effects of PPAR-delta and PPAR-gamma activation have been examined both in vivo in white adipose tissue from ob/ob mice and in vitro in cultured 3T3-L1 adipocytes using a combined 1H NMR spectroscopy and mass spectrometry metabolomic methodology to understand the contrasting roles of these receptors. These steady state measurements were supplemented with 13C-stable isotope substrate labeling to assess fluxes, respirometry and transcriptomic microarray analysis. The metabolic effects of the two receptors were readily distinguished, with PPAR-gamma activation characterised by increased fat storage and fat synthesis/elongation, while activation of PPAR-delta caused increased fatty acid beta-oxidation, TCA cycle rate and oxidation of extracellular branch chain amino acids. Stimulated glycolysis and increased desaturation of fatty acids were the only common pathways. PPAR-delta has a role as an anti-obesity target as well as an anti-diabetic.
2011-07-14 | GSE26207 | GEO
Project description:The nuclear receptor PPAR gamma is required for adipocyte differentiation, but its role in mature adipocytes is less clear. Here we report that knockdown of PPAR gamma expression in 3T3-L1 adipocytes returned the expression of most adipocyte genes towards preadipocyte levels. Consistently, down regulated but not up regulated genes showed strong enrichment of PPAR gamma binding. Surprisingly, not all adipocyte genes were reversed and the adipocyte morphology was maintained for an extended period after PPAR gamma depletion. To explain this, we focused on transcriptional regulators whose adipogenic regulation was not reversed upon PPAR gamma depletion. We identified GATA2, a transcription factor whose down-regulation early in adipogenesis is required for preadipocyte differentiation, remaining low after PPAR gamma knockdown. Forced expression of GATA2 in mature adipocytes complemented PPAR gamma depletion and impaired adipocyte functionality with a more preadipocyte- like gene expression profile. Ectopic expression of GATA2 in adipose tissue in vivo had similar effect on adipogenic gene expression. These results suggest that PPAR gamma-independent down regulation of GATA2 prevents reversion of mature adipocytes after PPAR gamma depletion. Keywords: cell type comparison, Gata2, PPAR gamma, adipocyte, preadipocytes, differentiation
2009-01-14 | GSE14004 | GEO
Project description:The nuclear receptor PPAR gamma is required for adipocyte differentiation, but its role in mature adipocytes is less clear. Here we report that knockdown of PPAR gamma expression in 3T3-L1 adipocytes returned the expression of most adipocyte genes towards preadipocyte levels. Consistently, down regulated but not up regulated genes showed strong enrichment of PPAR gamma binding. Surprisingly, not all adipocyte genes were reversed and the adipocyte morphology was maintained for an extended period after PPAR gamma depletion. To explain this, we focused on transcriptional regulators whose adipogenic regulation was not reversed upon PPAR gamma depletion. We identified GATA2, a transcription factor whose down-regulation early in adipogenesis is required for preadipocyte differentiation, remaining low after PPAR gamma knockdown. Forced expression of GATA2 in mature adipocytes complemented PPAR gamma depletion and impaired adipocyte functionality with a more preadipocyte- like gene expression profile. Ectopic expression of GATA2 in adipose tissue in vivo had similar effect on adipogenic gene expression. These results suggest that PPAR gamma-independent down regulation of GATA2 prevents reversion of mature adipocytes after PPAR gamma depletion. Experiment Overall Design: This dataset consists of three sample groups: preadipocytes, control siRNA treated adipocytes, and PPAR gamma siRNA treated adipocytes. Each sample group consists of three replicates samples. Each sample was hybridized to a separate array for a total of nine arrays. Experiment Overall Design: Technical replicates: Pread 1, Pread 2, Pread 3 Experiment Overall Design: Technical replicates: Cont siRNA 1, Cont siRNA 2, Cont siRNA 3 Experiment Overall Design: Technical replicates: PPAR gamma siRNA 1, PPAR gamma siRNA 2, PPAR gamma siRNA 3
2009-01-29 | E-GEOD-14004 | biostudies-arrayexpress
Project description:The rising prevalence of obesity and its associated metabolic abnormalities have become global diseases that carry considerable morbidity and mortality. While there is certainly an important genetic component, extensive human epidemiologic and animal model data suggest an epigenetic component to obesity. Nevertheless, the cellular and molecular underpinnings of these pathways and how they contribute to the development of obesity remain to be elucidated. Suv420h1 and h2 are histone methyltransferases responsible for chromatin compaction and gene repression. Through in vivo, ex-vivo and in vitro studies, we found that Suv420h1 and h2 respond to environmental stimuli and regulate metabolism by downregulating PPAR-γ, a master transcriptional regulator of lipid storage and glucose metabolism. Accordingly, mice lacking Suv420h proteins activate PPAR-γ target genes in brown adipose tissue to increase mitochondria respiration, improve glucose tolerance and reduce adipose tissue to fight obesity. We conclude that Suv420h proteins are key epigenetic regulator of PPAR-γ and the pathways controlling metabolism and weight balance in response to environmental stimuli.
2019-04-23 | GSE117482 | GEO
Project description:Pharmacological activation of the transcription factor PPAR gamma lowers blood pressure and improves glucose tolerance in humans. In contrast, naturally occurring mutations (e.g., P467L, V290M) in the ligand binding domain of PPAR gamma in humans leads to severe insulin resistance and early-onset hypertension. Experimental evidence, including whole genome expression profiling, suggests that these mutant versions of PPAR gamma act in a dominant negative manner. Because PPAR gamma is expressed in a variety of cell types and tissues, we generated a transgenic mouse model (SP467L) specifically targeting dominant negative PPAR gamma to the vascular smooth muscle cells in order to determine the action of PPAR gamma in the blood vessel independent of its systemic metabolic actions. In the data set provided herein, we examined the gene expression profile in mesenteric vessels from SP467L mice and their control littermates using the Affymetrix mouse exon 1.0 ST array.
2012-09-24 | GSE36482 | GEO
Project description:We herein found the strong expression of hypoxia-inducible factor-1α (HIF-1α) in tuberculosis granulomas and more rapid death of HIF-1α-conditional knockout mice than wild-type mice after M. tuberculosis infection. These results prompted us to investigate the role of HIF-1α in host defenses against infection. Bone-marrow derived macrophages from Wild-type (WT) mice and HIF-1α-conditional knockout (HIF-1 CKO) mice were infected with M tuberculosis H37Rv (multiplicity of infection = 0.5) for 12 h, and extracellular bacilli were removed from the macrophage culture medium. Cells were cultured for 4 days in the presence of 500 U/ml IFN-γ. In microarray analysis using Gene Chip Mouse Gene 1.0 ST Array, the expression of 757 and 1190 genes was ≥1.3-fold stronger and ≥0.77-fold weaker, respectively, in HIF-1 CKO than in WT.
2018-09-30 | E-MTAB-7244 | biostudies-arrayexpress
Project description:The nuclear receptor PPAR[gamma] is a master regulator controlling energy metabolism and cell fate in the prostate. One advanced human prostate cancer cell line PC3 was used to examine the effects of restoration of PPAR[gamma]2 action. Restoration of PPAR[gamma]2 action in PC3 cells inhibited cell proliferation and migration. PC3-PPAR[gamma]2 cDNA recombinants showed necrosis in cancer region and lymphocyte infiltration in surrounding stroma by H&E staining. They expressed low microtubules associated protein 1 light chain 3 (LC3), and high mixed lineage kinase domain-like (MLKL), CD4 and CD8 protein expression levels compare to the control by IHC staining. Gain-of-function of PPAR[gamma]2 in PC3 cells resulted in reprogramming of lipid and energy metabolism-associated signaling pathways by microarray analysis. These data are consistent with the idea that PPAR[gamma] action specific to PPAR[gamma]2, exerts a crucial tumor suppressive role on triggering autophagy and necroptosis in human prostate cancer initiation and progression.
2020-12-10 | GSE108309 | GEO