Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA172441 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Expression data from human hepatocellular carcinoma cell line HepG2
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Project description:We compared miRNA expression profiles among 5 groups of HepG2 cells treated with various concentrations (0,100,200 nM) of triptolide for 12 h or 24 h. Two-condition experiment, triptolide intervention vs. without intervention. Biological replicates: 3 control, 3 treated, independently grown and harvested. One replicate per array.
2014-05-01 | E-GEOD-40037 | biostudies-arrayexpress
Project description:We have sequenced miRNA libraries from human embryonic, neural and foetal mesenchymal stem cells. We report that the majority of miRNA genes encode mature isomers that vary in size by one or more bases at the 3’ and/or 5’ end of the miRNA. Northern blotting for individual miRNAs showed that the proportions of isomiRs expressed by a single miRNA gene often differ between cell and tissue types. IsomiRs were readily co-immunoprecipitated with Argonaute proteins in vivo and were active in luciferase assays, indicating that they are functional. Bioinformatics analysis predicts substantial differences in targeting between miRNAs with minor 5’ differences and in support of this we report that a 5’ isomiR-9-1 gained the ability to inhibit the expression of DNMT3B and NCAM2 but lost the ability to inhibit CDH1 in vitro. This result was confirmed by the use of isomiR-specific sponges. Our analysis of the miRGator database indicates that a small percentage of human miRNA genes express isomiRs as the dominant transcript in certain cell types and analysis of miRBase shows that 5’ isomiRs have replaced canonical miRNAs many times during evolution. This strongly indicates that isomiRs are of functional importance and have contributed to the evolution of miRNA genes
2014-08-06 | GSE58734 | GEO
Project description:We compared miRNA expression profiles among 5 groups of HepG2 cells treated with various concentrations (0,100,200 nM) of triptolide for 12 h or 24 h.
2014-05-01 | GSE40037 | GEO
Project description:Temporal gene regulation of human hepatocellular carcinoma HepG2 cells treated with obacunone
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Project description:Gene expression profiles of human hepatocellular carcinoma (validation set)
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Project description:Genome-wide DNA methylation profiles of human hepatocellular carcinoma
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Project description:To gain deeper insight into the mechanism of toxicity, it is important to identify and characterize miRNAs profiles involved in responses to specific classes of toxicants in conjunction with their impact on gene expression levels. However, few reports have described the effects of toxicants on miRNA expression profiles. Taking into account the prominent role of miRNAs in cancer development, progression, cell cycle control, and proliferation-related processes, it is likely that miRNAs are involved in the toxic response induced by carcinogens. Polycyclic aromatic hydrocarbons (PAHs) are a well-characterized class of human carcinogens. In the present study, we documented the different expression profiles of miRNAs in environmental carcinogen-exposed HepG2 cells by miRNA microarray analysis. To evaluate the change in miRNA expression levels, human hepatocellular carcinoma (HepG2) cells were exposed to two PAHs (benzo[a]anthracene, benzo[k]fluoranthene) for 48 h. miRNA expression analysis was conducted using a 8x16k human miRNA microarray (Agilent Technologies, USA).
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Project description:Gene expression profiles of human hepatocellular carcinoma (training set 2)
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Project description:Gene expression profiles of human hepatocellular carcinoma (training set 1)
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