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Transcriptomic effect of high-fat diet and PCN treatment on the gonadal white adipose tissue of C57BL/6N mice.

ABSTRACT: C57BL/7N mice were fed high-fat diet (HFD) and treated with Pregnenolone-16alfa-carbonitrile (PCN), a selective murine PXR agonist, and duodenal effects of the high-fat diet feeding and PCN treatment were studied.

ORGANISM(S): Mus musculus

PROVIDER: GSE168197 | GEO | 2023/09/22

REPOSITORIES: GEO

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Transcriptomic effect of high-fat diet and PCN treatment on the duodenum of C57BL/6N mice.

Project description:C57BL/7N mice were fed high-fat diet (HFD) and treated with Pregnenolone-16alfa-carbonitrile (PCN), a selective murine PXR agonist, and duodenal effects of the high-fat diet feeding and PCN treatment were studied.

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Transcriptomic effect of high-fat diet and PCN treatment on the skeletal muscle of C57BL/6N mice.

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The effect of PCN on gene expression in mouse primary hepatocytes

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Effect of PCN on CAR and PXR regulated genes involved in circadian rhythm, drug metabolism and cholesterol homeostasis

Project description:The nuclear receptor PXR (Pregnane X rreceptor) mediates the effects of pregnenolone-16alpha-carbonitrile (PCN) on gene transcription. The relative role of PXR and also CAR to the induction response by PCN was studied on cDNA arrays containing 320 (Steroltalk V2) genes (genes involved in cyrcadian rhythm, drug metabolism, cholesterol biosynthesis, sterol synthesis/transport, heme synthesis). Samples from livers of wild type and CAR-/-, PXR-/- or CAR/PXR-/- knockout mice were tested after treatment with PCN for gene expression within the European Framework V program âSteroltalkâ (www.steroltalk.net). Results from these experiments show the complex role of PXR receptor in the expression of genes involved in cyrcadian rhythm, drug metabolism and cholesterol biosynthesis. Animals were injected i.p. 40mg/kg PCN or vehicle (5% DMSO in corn oil). After 12h they were sacrificed and total RNA was isolated from the livers. Pools of untreated samples were mixed in each genetic variant group (wild type and CAR-/-, PXR-/- or CAR/PXR-/-) with the PCN treated ones and hybridized to Steroltalk V2 arrays.

2010-05-16 | E-GEOD-12537 | biostudies-arrayexpress

Effect of PCN on CAR and PXR regulated genes involved in circadian rhythm, drug metabolism and cholesterol homeostasis

Project description:The nuclear receptor PXR (Pregnane X rreceptor) mediates the effects of pregnenolone-16alpha-carbonitrile (PCN) on gene transcription. The relative role of PXR and also CAR to the induction response by PCN was studied on cDNA arrays containing 320 (Steroltalk V2) genes (genes involved in cyrcadian rhythm, drug metabolism, cholesterol biosynthesis, sterol synthesis/transport, heme synthesis). Samples from livers of wild type and CAR-/-, PXR-/- or CAR/PXR-/- knockout mice were tested after treatment with PCN for gene expression within the European Framework V program “Steroltalk” (www.steroltalk.net). Results from these experiments show the complex role of PXR receptor in the expression of genes involved in cyrcadian rhythm, drug metabolism and cholesterol biosynthesis.

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Effect of TCPOBOP and PCN in combination with high-cholesterol diet on genes involved in cholesterol homeostasis

Project description:TCPOBOP (1,4-bis[2-(3,5-dichloropyridyloxy)]benzene) and PCN (pregnenolone 16Î±-carbonitrile) are inducers of drug metabolism through activation of nuclear receptors CAR (constitutive androstane receptor) and PXR (pregnane X receptor), respectively. Mouse experiment was designed to study the effect of CAR and PXR activation on cholesterol homeostasis genes and other genes, which are present on the Steroltalk v2 microarray. Treatments were combined with standard and high-cholesterol diet to observe the interference of high liver cholesterol on nuclear receptor transcription regulation. All experiments were done within the European sixth Framework program âSteroltalkâ (www.steroltalk.net). Results form these experiments give new knowledge about involvement of âxenosensorsâ CAR and PXR in regulation of endogenous liver metabolism. Animals were injected i.p. 3mg/kg TCPOBOP, 40 mg/kg PCN or vehicle (corn oil) in combination of one week of standard or 1% cholesterol diet prior tretament. After 24h they were sacrificed and total RNA was isolated from the livers. Each sample was hybridized with a reference sample to Steroltalk v2 microarrays.

2010-10-08 | E-GEOD-13688 | biostudies-arrayexpress

Effect of TCPOBOP and PCN in combination with high-cholesterol diet on genes involved in cholesterol homeostasis

Project description:TCPOBOP (1,4-bis[2-(3,5-dichloropyridyloxy)]benzene) and PCN (pregnenolone 16α-carbonitrile) are inducers of drug metabolism through activation of nuclear receptors CAR (constitutive androstane receptor) and PXR (pregnane X receptor), respectively. Mouse experiment was designed to study the effect of CAR and PXR activation on cholesterol homeostasis genes and other genes, which are present on the Steroltalk v2 microarray. Treatments were combined with standard and high-cholesterol diet to observe the interference of high liver cholesterol on nuclear receptor transcription regulation. All experiments were done within the European sixth Framework program “Steroltalk” (www.steroltalk.net). Results form these experiments give new knowledge about involvement of ‘xenosensors’ CAR and PXR in regulation of endogenous liver metabolism.

2009-11-20 | GSE13688 | GEO

Transcriptomic effect of high-fat diet and PCN treatment on the livers of of PXR deficient mice

Project description:PXR deficient mice were fed high-fat diet (HFD) and treated with PCN, a selective murine PXR agonist, and hepatic effects of the high-fat diet feeding and PCN treatment were studied.

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RNA-seq analysis of mouse liver transcriptome following exposure to TCPOBOP or PCN

Project description:Changes in gene expression were assayed in mouse liver nuclear RNA following a single injection of the CAR agonist TCPOBOP (1,4-Bis-[2-(3,5-dichloropyridyloxy)]benzene) or the PXR agonist PCN (pregnenolone 16α-carbonitrile) in 7-week old mice. This study is part of a larger study entitled Sex-Differential Responses of Tumor Promotion-Associated Genes and Dysregulation of Novel Long Noncoding RNAs in Constitutive Androstane Receptor-Activated Mouse Liver (PMID: 28903501).

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Project description:We performed a transcriptomic comparison of the Pxr-regulated genes in the liver and intestine (ileum and colon) using microarrays in adult wild-type (WT) vs Pxr-/- C57Bl6/J male mice treated with the rodent specific Pxr ligand pregnenolone 16α-carbonitrile (PCN) (100 mg/kg i.p. once daily for 4 days).

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