GEO DataSets

(Submitter supplied) The nuclear receptors CAR (constitutive androstane receptor) and PXR (pregnane X receptor) mediate the effects of phenobarbital (PB) on gene transcription. To investigate the relative role of CAR and PXR in the induction response, cDNA arrays were generated containing 120 genes which are known to be regulated with these or related nuclear receptors (genes involved in drug metabolism, cholesterol biosynthesis, sterol synthesis/transport, heme synthesis). more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL7138

24 Samples

Download data: TXT

(Submitter supplied) 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). more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL7190

24 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL7138

44 Samples

Download data: TXT

(Submitter supplied) The nuclear receptor CAR (constitutive androstane receptor) mediates the effects of 1,4-bis[2-(3,5-dichloropyridyloxy)]benzene (TCPOBOP) on gene transcription. To investigate the relative role of CAR and also PXR in the induction response, cDNA arrays were generated containing 120 (Sterolgene V1) genes which are known to be regulated with these or related nuclear receptors (genes involved in drug metabolism, cholesterol biosynthesis, sterol synthesis/transport, heme synthesis). more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL7138

20 Samples

Download data: TXT

(Submitter supplied) To identify the CAR-, PXR- and PPARα-specific genome-wide expression changes, hepatocyte cultures from six individual donors were treated with the prototypical ligands for CAR (CITCO), PXR (rifampicin) and PPARα (WY14,643) as well as DMSO (vehicle control). Afterwards, the mRNA expression in these samples was determined utilizing Affymetrix® microarrays.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

24 Samples

Download data: CEL

(Submitter supplied) Signaling through the Wnt/b-catenin pathway is a crucial determinant of hepatic zonal gene expression, liver development, regeneration, and tumorigenesis. The gene encoding b-catenin is called Ctnnb1. We have previously shown that liver tumour promotion mediated by the model tumour promoter phenobarbital (PB) is completely lost in mice, where Ctnnb1 has been conditionally knocked out in hepatocytes (CTNNB1KO mice; Rignall et al., Carcinogenesis 32, 52-57, 2010). more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by array

Platform:

GPL13493

16 Samples

Download data: TXT

(Submitter supplied) Signaling through the Wnt/b-catenin pathway is a crucial determinant of hepatic zonal gene expression, liver development, regeneration, and tumorigenesis. The gene encoding b-catenin is called Ctnnb1. We have previously shown, that liver tumour promotion mediated by the model tumour promoter phenobarbital (PB) is completely lost in mice, where Ctnnb1 has been conditionally knocked out in hepatocytes (CTNNB1KO mice; Rignall et al., Carcinogenesis 32, 52-57, 2010). more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

23 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus; Homo sapiens; Rattus norvegicus; synthetic construct

Type:

Expression profiling by array; Non-coding RNA profiling by array; Methylation profiling by genome tiling array

14 related Platforms

2666 Samples

Download data: CEL, CSV, PAIR, TXT

(Submitter supplied) The carcinogenic potential of chemicals is currently evaluated with rodent life-time bioassays, which are time consuming, and expensive with respect to cost, number of animals and amount of compound required. For insight into early mechanisms of non-genotoxoc carcinogenesis and for identification of potential early biomarkers of non-genotoxic carcinogenesis, groups of rats were treated with a range of known non-genotoxic carcinogens for a period of 14, 28, or 90 days, and liver tissue was harvested for expression profiling. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL20091

123 Samples

Download data: CEL

(Submitter supplied) Here we investigate the difference in global gene expression in different tumor types found in the liver of rats after NNM-initiation/PB-promotion of tumor growth. We aim to identify tumor characteristic expression in nodules, focii, adenomas and carcinomas.

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL1355

47 Samples

Download data: CEL

(Submitter supplied) Conventional notion regards the action of non-genotoxic carcinogens (NGC) an autonomous process largely confined to parenchymal cells. Here we aim to elucidate the role of the hepatic mesenchyme for the action of two prototypical NGC, phenobarbital (PB), an anti-epileptic drug, and cyproterone acetate (CPA) a gestagen used in contraceptive pills.

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL1355

60 Samples

Download data: CEL

(Submitter supplied) Conventional notion regards the action of non-genotoxic carcinogens (NGC) an autonomous process largely confined to parenchymal cells. Here we aim to elucidate the role of the hepatic mesenchyme for the action of a prototypical NGC, phenobarbital (PB), an anti-epileptic drug.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL8321

12 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

synthetic construct; Mus musculus

Type:

Expression profiling by array; Non-coding RNA profiling by array

Platforms:

GPL14613 GPL1261

345 Samples

Download data: CEL

(Submitter supplied) The constitutive androstane receptor (CAR) and the pregnane X receptor (PXR) are closely related nuclear receptors involved in drug metabolism and play important roles in the mechanism of phenobarbital (PB)-induced rodent nongenotoxic hepatocarcino- genesis. Here, we have used a humanized CAR/PXR mouse model to examine potential species differences in receptor-dependent mechanisms underlying liver tissue molecular responses to PB. more...

Organism:

Mus musculus; synthetic construct

Type:

Non-coding RNA profiling by array

Platform:

GPL14613

178 Samples

Download data: CEL

(Submitter supplied) The constitutive androstane receptor (CAR) and the pregnane X receptor (PXR) are closely related nuclear receptors involved in drug metabolism and play important roles in the mechanism of phenobarbital (PB)-induced rodent nongenotoxic hepatocarcino- genesis. Here, we have used a humanized CAR/PXR mouse model to examine potential species differences in receptor-dependent mechanisms underlying liver tissue molecular responses to PB. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

167 Samples

Download data: CEL

(Submitter supplied) Fipronil (CAS #: 120068-37-3), a widely used insecticide, has been described as a thyroid disruptor in rat inducing a marked increase in thyroxine (T4) clearance resulting in a decrease in T4 plasma concentration. These effects seem to require the bioactivation of fipronil via its biotransformation into fipronil sulfone by cytochromes P450 (CYP). Here, we hypothesized that fipronil-induced thyroid disruption may, at least in part, result from the induction of hepatic enzymes involved in the metabolism of thyroid hormones. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL7294

15 Samples

Download data: TXT

(Submitter supplied) This study aimed to quantify and compare the mRNA abundance of major xenobiotic processing genes in liver following activation of PXR and CAR using RNA-Seq

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

9 Samples

Download data: ZIP

(Submitter supplied) Characterization of Peroxisome Proliferator-Activated Receptor alpha (PPAR(alpha)) - Independent Effects of PPAR(alpha) Activators in the Rodent Liver: Di-(2-ethylhexyl) phthalate Activates the Constitutive Activated Receptor data files in this series indicate the involvement of PPAR(alpha) and CAR regulatory pathway after DEHP treatment. Keywords: gene expression/microarray

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS3748

Platform:

GPL6246

15 Samples

Download data: CEL

Analysis of livers from peroxisome proliferator-activated receptor (PPAR) α-null animals exposed to the plasticizer di-(2-ethylhexyl) phthalate (DEHP). DEHP increases liver tumors in the absence of PPARα. Results provide insight into DEHP-induced transcriptional changes independent of PPARα.

Organism:

Mus musculus

Type:

Expression profiling by array, count, 2 agent, 2 genotype/variation sets

Platform:

GPL6246

Series:

GSE18564

15 Samples

Download data: CEL

(Submitter supplied) Unfiltered coffee markedly increases serum lipid levels in humans and mice. The responsible compounds are the fat-soluble diterpenes cafestol and kahweol. Cafestol is responsible for more than 80% of the effect on serum lipids and is the most potent cholesterol-elevating compound known in the human diet. Aim of these microarray studies was to identify novel genes and regulatory pathways determining the cholesterol raising effect of cafestol by genome-wide expression studies. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL3239

16 Samples

Download data