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

ABSTRACT: 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).

ORGANISM(S): Mus musculus Arabidopsis thaliana Rattus norvegicus Homo sapiens

PROVIDER: GSE19540 | GEO | 2009/12/21

SECONDARY ACCESSION(S): PRJNA122317

REPOSITORIES: GEO

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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). Adult male Sprague-Dawley rats (Harlan Italy, Correzzana, Milan, Italy), weighing 315-320 g, were divided into 16 groups, each composed of 8 animals. Half of them were exposed to ECS for 28 consecutive days, as previously described (Izzotti et al., 2005), while the remaining rats (Sham-exposed) were kept for the same period of time in filtered air. The rats belonging to 14 groups were treated with chemopreventive agents, starting 3 days before exposure to ECS.

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

microRNA expression in lung tumors of viny-carbamate treated and viny-carbamate and indole-3-carbinol treated mice

Project description:We examined the differential expression of miRNAs in vinyl carbamate (VC)-induced lung tumors in A/J mice and assessed if the chemopreventive agent indole-3-carbinol (I3C) reversed the effects of the carcinogen. Microarray studies revealed some up-regulated microRNAs, but down-regulation of several microRNAs in carcinogen-treated mice relative to vehicle-treated mice. Keywords: Expression micro and control RNA from control treated (3 replicates), vinyl carbamate treated (4 replicates) and vinyl carbamate and indole-3-carbinol treated mice was hybridized versus synthetic human DNA to a custom multi-organism oligonucleotide array.

2010-05-18 | E-GEOD-16490 | biostudies-arrayexpress

microRNA expression in lung tumors of viny-carbamate treated and viny-carbamate and indole-3-carbinol treated mice

2009-12-06 | GSE16490 | GEO

The Chronic Gavage Toxicity/Carcinogenicity Study of Indole-3-Carbinol (I3C) in Harlan Sprague-Dawley Rats (G823524-B), CAS No 700-06-1

Project description:Indole-3-carbinol is used as a dietary supplement and has potential use as a therapeutic agent for the prevention of various types of cancer. While substantial evidence exists that indole-3-carbinol can reduce the risk of cancers induced by several known carcinogens when administered to animals, indole-3-carbinol can also function as an initiator and tumor promoter in certain models. The carcinogenic potential of indole-3-carbinol has not been studied in a 2-year bioassay. The objective of the microarray study was to evaluate the transcriptional changes in liver from rats exposed to 0 or 300 mg/kg indole-3-carbinol. At 3 months, livers were analyzed from female Harlan Sprague Dawley rats in the 2-year gavage study of indole-3-carbinol. Female rats were administered 300 mg indole-3-carbinol/kg body weight in corn oil by gavage, 5 days per week in a 2 year toxicology study of indole-3-carbinol. Gene expression studies were performed on rat liver with samples hybridized to whole rat genome RG230_2.0 rat GeneChip arrays (Affymetrix, CA).

2014-07-17 | E-GEOD-59287 | biostudies-arrayexpress

The Chronic Gavage Toxicity/Carcinogenicity Study of Indole-3-Carbinol (I3C) in Harlan Sprague-Dawley Rats (G823524-B), CAS No 700-06-1

2014-07-17 | GSE59287 | GEO

Transcriptomic response of Sclerotinia sclerotiorum after exposure to allyl-isothiocyanate and indol-3 carbinol

Project description:We performed a transcriptomic analysis of the necrorophic fungus Sclerotinia sclerotiorum exposed to two different isothiocyanates (allyl-isothiocyanate and indol-3-carbinol), searching for mechanisms of adaptation and detoxification of these chemicals.

2020-12-29 | GSE144344 | GEO

Transcriptomic response of Xanthomonas campestris pv. campestris after exposure to allyl-isothiocyanate and indol-3 carbinol

Project description:We performed a transcriptomic analysis of the necrotrophic bacteria Xanthomonas campestris pv. campestris exposed to two different isothiocyanates (allyl-isothiocyanate and indol-3-carbinol), searching for mechanisms of adaptation and detoxification of these chemicals.

2021-09-08 | GSE167555 | GEO

Interaction between diabetes and hypertension in a rat model of diabetic nephropathy

Project description:Fisher male Cyp1a1mRen2 rats were allocated into four groups of four biological replicates each: control; streptozotocin-induced diabetes alone; indole-3-carbinol induced hypertension alone; combined induced diabetes and hypertension. <br>Kidneys were harvested for microarray analysis.analysis.

2011-12-31 | E-MEXP-3165 | biostudies-arrayexpress

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

RNA-seq analysis of epidermal cells from mice fed with a diet deprived or not in AHR ligands

Project description:Mice were fed with a synthetic diet enriched or not in Indole-3-carbinol (I3C). Papain or vehicle (PBS) was injected in the footpad. After 6h, epidermal cells were extracted and subjected to RNA-seq analysis.

2023-04-18 | GSE198368 | GEO

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