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Global gene expression profiles in primary human hepatocytes exposed to phytochemicals

ABSTRACT: Primary human hepatocytes were treated with 2 non-cytotoxic concentrations of sulforaphane (SFN; 10 and 50 uM) phenethyl isothiocyante (PEITC; 10 and 25 uM), 3,3'-diindolylmethane (DIM; 10 and 50 uM), or one concentration of oltipraz (OPZ; 30 uM) for 48 hours. Given the considerable heterogeneity of the human population, it was essential that each experiment was performed with hepatocytes from the same liver, i.e. each liver served as its own control. Each treatment was performed on three batches of human hepatocytes, each derived from a separate liver.

ORGANISM(S): Homo sapiens

PROVIDER: GSE20479 | GEO | 2010/07/19

SECONDARY ACCESSION(S): PRJNA125165

REPOSITORIES: GEO

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global gene expression profiles in primary human hepatocytes exposed to phytochemicals

Project description:Primary human hepatocytes were treated with 2 non-cytotoxic concentrations of sulforaphane (SFN; 10 and 50 uM) phenethyl isothiocyante (PEITC; 10 and 25 uM), 3,3'-diindolylmethane (DIM; 10 and 50 uM), or one concentration of oltipraz (OPZ; 30 uM) for 48 hours. Given the considerable heterogeneity of the human population, it was essential that each experiment was performed with hepatocytes from the same liver, i.e. each liver served as its own control. Each treatment was performed on three batches of human hepatocytes, each derived from a separate liver. 32 arrays, 8 experimental groups.

2010-07-19 | E-GEOD-20479 | biostudies-arrayexpress

microRNA expression in rat lung receiving chemopreventive agents and attenuation of cigarette smoke-induced alterations

Project description:We previously showed that exposure of rats to environmental cigarette smoke (ECS) causes extensive downregulation of microRNA expression in the lung, resulting in overexpression of multiple genes and proteins. In the present study, we evaluated by microarray the expression of 484 microRNAs in the lung of rats receiving orally chemopreventive agents, including N-acetylcysteine, oltipraz, indole-3-carbinol, 5,6-benzoflavone and phenethyl isothiocyanate, or combinations thereof. Scatterplot, hierarchical cluster, and principal component analyses showed that none of the above chemopreventive regimens appreciably affected the baseline microRNA expression, while all of them attenuated ECS-induced alterations but to a variable extent. Thus, mirnome analysis provides a new tool for predicting both safety and efficacy of cancer chemopreventive agents at early carcinogenesis stages. Keywords: cancer chemoprevention, microRNA, environmental cigarete smoke (ECS), 5,6-benzoflavone (BF), Indole 3-carbinol (I3C),N-acetylcysteine (NAC), oltipraz (OPZ), Phenethyl isothiocyanate (PEITC).

2009-12-21 | GSE19540 | GEO

microRNA expression in rat lung receiving chemopreventive agents and attenuation of cigarette smoke-induced alterations

2010-05-16 | E-GEOD-19540 | biostudies-arrayexpress

Cancer prevention by phenethyl isothiocyanate (PEITC) in transgenic adenocarcinoma of the mouse prostate (TRAMP) mice [methyl-Seq]

Project description:The glucosinolate-derived phenethyl isothiocyanate (PEITC) has been widely reported to reduce the risk of prostate cancer by modulating multiple biologically relevant activities. Emerging evidence suggests that PEITC may exert its anti-cancer effects through epigenetic mechanisms including alterations of DNA methylation. The purpose of this study was to examine the effects of PEITC on prostate carcinogenesis in a murine prostate cancer model (TRAMP). 8 weeks old TRAMP males were fed AIN-93M control diet or diet containing 0.05% PEITC for 8 or16 weeks. We observed reduced tumor incidence in PEITC group (0/5) at 24 weeks of age as compared to control diet group (6/7). We also performed Next-generation sequencing (RNA-seq and SureSelect Methyl-seq) with non-tumor and tumor prostate tissue collected from the above-mentioned TRAMP groups and time matching wildtype (not TRAMP) control diet groups at the same time points. Our bioinformatic analyses reveal that several carcinogenesis pathways as well as pathways of inflammation and cell proliferation were activated in TRAMP group as compared to wildtype group. Surprisingly, these pathways were inhibited by PEITC diet administration. We also identified a number of genes with inverse regulation relationship between their RNA expression and their CpG methylation during prostate carcinogenesis and cancer prevention by PEITC in TRAMP mice. Our study demonstrated that PEITC administration can suppress prostate cancer by epigenetic regulation of key genes. [This GEO/dataset is the bisulfite methyl-seq part of the study.]

2023-01-01 | GSE140311 | GEO

Cancer prevention by phenethyl isothiocyanate (PEITC) in transgenic adenocarcinoma of the mouse prostate (TRAMP) mice [RNA-Seq]

2023-01-01 | GSE140310 | GEO

Effect of Sodium Valproate on Rat Primary Hepatocytes.

Project description:This study provides an evaluation of changes in gene expression associated with sodium valproate treatment of rat hepatocytes in vitro. Primary rat hepatocytes were treated for 24 and 48 hours with two doses (500 uM and 10 mM) of sodium valproate and water vehicle control. Five replicates of each treatment were performed. Cells were then extracted and RNA processed for microarray analysis.

2012-08-28 | GSE40338 | GEO

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Project description:50 uM AFB_time course

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Effect of Methapyrilene on Rat Primary Hepatocytes.

Project description:This study provides an evaluation of changes in gene expression associated with methapyrilene treatment of rat hepatocytes in vitro. Primary rat hepatocytes were treated for 24 and 48 hours with two doses (3 uM and 100 uM) of methaphyriline and 1% DMSO vehicle control. Five replicates of each treatment were performed. Cells were then extracted and RNA processed for microarray analysis.

2012-08-28 | GSE40347 | GEO

Effect of WY-14643 on Rat Primary Hepatocytes.

Project description:This study provides an evaluation of changes in gene expression associated with WY-14643 treatment of rat hepatocytes in vitro. Primary rat hepatocytes were treated for 24 and 48 hours with two doses 8 uM and 200 uM) of WY-14643 and 1% DMSO vehicle control. Five replicates of each treatment were performed. Cells were then extracted and RNA processed for microarray analysis.

2012-08-28 | GSE40346 | GEO

Effect of Chlorpromazine HCl on Rat Primary Hepatocytes.

Project description:This study provides an evaluation of changes in gene expression associated with chlorpromazine HCl treatment of rat hepatocytes in vitro. Primary rat hepatocytes were treated for 24 and 48 hours with two doses (0.8 uM and 20 uM) of chlorpromazine HCl and 1% DMSO vehicle control. Five replicates of each treatment were performed. Cells were then extracted and RNA processed for microarray analysis.

2012-08-28 | GSE40341 | GEO

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