GEO DataSets

(Submitter supplied) Many innovative techniques and scientific improvements are available to tackle societal concerns, like public health safety and confining the risk of cancerous exposure to chemicals, but have not been thoroughly tested and implicated yet. We investigated if microRNA and mRNA transcription profiles can be implemented in a short-term carcinogen classifier assay. Our study is additionally focusing on the drawbacks of present-day carcinogen screening strategies and also aims to contribute to a more ethical approach towards animal use and welfare within risk assessment. more...

Organism:

Homo sapiens; Mus musculus; Rattus norvegicus

Type:

Non-coding RNA profiling by array

Platform:

GPL16560

68 Samples

Download data: TXT

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

Organism:

Homo sapiens; Rattus norvegicus; Mus musculus

Type:

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

Platforms:

GPL18609 GPL18615

340 Samples

Download data: CEL, GPR, TXT

(Submitter supplied) The well-defined battery of in vitro systems applied within chemical cancer risk assessment is often characterised by a high false-positive rate, thus repeatedly failing to correctly predict the in vivo genotoxic and carcinogenic properties of test compounds. Toxicogenomics, i.e. mRNA-profiling, has been proven successful in improving the prediction of genotoxicity in vivo and the understanding of underlying mechanisms. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL18615

184 Samples

Download data: CEL

(Submitter supplied) The well-defined battery of in vitro systems applied within chemical cancer risk assessment is often characterised by a high false-positive rate, thus repeatedly failing to correctly predict the in vivo genotoxic and carcinogenic properties of test compounds. Toxicogenomics, i.e. mRNA-profiling, has been proven successful in improving the prediction of genotoxicity in vivo and the understanding of underlying mechanisms. more...

Organism:

Mus musculus; Rattus norvegicus; Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL18609

156 Samples

Download data: GPR, TXT

(Submitter supplied) At present, substantial efforts are focused on the development of in vitro assays coupled with ”omics” technologies for the identification of carcinogenic substances as an alternative to the classical 2-year rodent carcinogenicity bioassay. A prerequisite for the eventual regulatory acceptance of such assays, however, is the in vivo relevance of the observed in vitro findings.

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL1355

72 Samples

Download data: CEL

(Submitter supplied) The current test strategy for carcinogenicity is generally based on in vitro and in vivo genotoxicity assays. Non-genotoxic carcinogens (NGTXC) are negative for genotoxicity and go undetected. Therefore, alternative tests to detect these chemicals are urgently needed. NGTXC act through different modes of action, which complicates the development of such assays. We have demon­strated recently in primary mouse hepatocytes that some, but certainly not all, NGTXC can be categorized according to their mode of action based on feature detection at a gene expression level (Schaap et al. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL17198

88 Samples

Download data: CEL

(Submitter supplied) The current test strategy for carcinogenicity is generally based on in vitro and in vivo genotoxicity assays. Non-genotoxic carcinogens (NGTXC) are negative for genotoxicity and go undetected. Therefore, alternative tests to detect these chemicals are urgently needed. NGTXC act through different modes of action, which complicates the development of such assays. We have demonstrated recently in primary mouse hepatocytes that some, but certainly not all, NGTXC can be categorized according to their mode of action based on feature detection at a gene expression level (Schaap et al. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL15125

111 Samples

Download data: CEL, TXT

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

Organism:

Homo sapiens; Rattus norvegicus; Mus musculus

Type:

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

Platforms:

GPL18609 GPL18615

120 Samples

Download data: CEL, GPR, TXT

(Submitter supplied) The study investigated differential gene expression in primary mouse hepatocyte mRNA following 24 and 48 hours of exposure to aflatoxin B1, cisplatin, benzo(a)pyrene, 2,3,7,8-tetrachloordibenzo-p-dioxine, cyclosporin A or Wy-14,643 or their responsive solvent. Three (four for Wy-14,643) biological replicates per compound/solvent.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL18615

60 Samples

Download data: CEL

(Submitter supplied) The study investigated differential miRNA changes in primary mouse hepatocyte following 24 and 48 hours of exposure to aflatoxin B1, cisplatin, benzo(a)pyrene, 2,3,7,8-tetrachloordibenzo-p-dioxine, cyclosporin A or Wy-14,643 or their responsive solvent. Three (four for Wy-14,643) biological replicates per compound/solvent.

Organism:

Homo sapiens; Rattus norvegicus; Mus musculus

Type:

Non-coding RNA profiling by array

Platform:

GPL18609

60 Samples

Download data: GPR, TXT

(Submitter supplied) Background: Information on the carcinogenic potential of chemicals is only availably for High Production Volume products. There is however, a pressing need for alternative methods allowing for the chronic toxicity of substances, including carcinogenicity, to be detected earlier and more reliably. Here we applied advanced genomics to a cellular transformation assay to identify gene signatures useful for the prediction of risk for carcinogenicity. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

60 Samples

Download data: CEL, CHP

(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. Since the results of these 2-year bioassays are not known until quite late during development of new chemical entities, and since the short-term test battery to test for genotoxicity, a characteristic of genotoxic carcinogens, is hampered by low specificity, the identification of early biomarkers for carcinogenicity would be a big step forward. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL341

421 Samples

Download data: CEL

(Submitter supplied) Assessing the carcinogenic potential of drug candidates is a costly procedure which requires the life-long treatment of rodents at different dose levels. A promising approach, which may to a certain degree reduce the need for animal studies in the future is toxicogenomics. The idea is to employ microarray platforms for the genome-wide expression profiling of compounds, which may facilitate the discovery of biomarker genes and provide insights in molecular mechanisms. more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by array

Platform:

GPL13493

224 Samples

Download data: TXT

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

Organism:

Mus musculus; Rattus norvegicus

Type:

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

Platforms:

GPL14889 GPL17787 GPL341

189 Samples

Download data: CEL, CSV, TXT

(Submitter supplied) In this study we performed microarray-based molecular profiling of liver samples from Wistar rats exposed to genotoxic carcinogens (GC), nongenotoxic carcinogens (NGC) or non-hepatocarcinogens (NC) for up to 14 days. In contrast to previous toxicogenomics studies aimed at the inference of molecular signatures for assessing the potential and mode of compound carcinogenicity, we considered multi-level omics data. more...

Organism:

Mus musculus; Rattus norvegicus

Type:

Protein profiling by protein array

Platform:

GPL17787

63 Samples

Download data: CSV

(Submitter supplied) In this study we performed microarray-based molecular profiling of liver samples from Wistar rats exposed to genotoxic carcinogens (GC), nongenotoxic carcinogens (NGC) or non-hepatocarcinogens (NC) for up to 14 days. In contrast to previous toxicogenomics studies aimed at the inference of molecular signatures for assessing the potential and mode of compound carcinogenicity, we considered multi-level omics data. more...

Organism:

Rattus norvegicus

Type:

Non-coding RNA profiling by array

Platform:

GPL14889

63 Samples

Download data: TXT

(Submitter supplied) In this study we performed microarray-based molecular profiling of liver samples from Wistar rats exposed to genotoxic carcinogens (GC), nongenotoxic carcinogens (NGC) or non-hepatocarcinogens (NC) for up to 14 days. In contrast to previous toxicogenomics studies aimed at the inference of molecular signatures for assessing the potential and mode of compound carcinogenicity, we considered multi-level omics data. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL341

63 Samples

Download data: CEL

(Submitter supplied) Here, we examined the liver microRNA profile of male Fischer rats exposed through their diet to genotoxic (2-acetylaminofluorene) and epigenetic (phenobarbital, diethylhexylphthalate, methapyrilene HCL, monuron, and chlorendic acid) chemical hepatocarcinogens, as well as to non-hepatocarcinogenic treatments (benzophenone, and diethylthiourea) for three months. The aim of the study was to investigate how liver miRNA profiles relate to mode of action and carcinogenic potential of chemicals.

Organism:

Rattus norvegicus

Type:

Non-coding RNA profiling by array

Platform:

GPL14889

38 Samples

Download data: TXT

(Submitter supplied) Under REACH, the European Community Regulation on chemicals, the testing strategy for carcinogenicity is generally based on in vitro and in vivo genotoxicity assays. Given that non-genotoxic carcinogens are negative for genotoxicity, this class of carcinogens will not be detected. Therefore, alternative test are urgently needed. Non-genotoxic carcinogens, however, act through different modes of action, which complicates the development of such an assay. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL15125

71 Samples

Download data: CEL, TXT

(Submitter supplied) Acute effects caused by the non-genotoxic carcinogen and peroxisome proliferator (PP) diethylhexylphthalate (DEHP) in the mouse liver

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

24 Samples

Download data: CEL