Transcription profiling of mouse C3H10T1/2 cells stimulated to differentiate using IDMB to investigate adipogenesis
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ABSTRACT: Confluent C3H10T1/2 cells stimulated to differentiate using IDMB (1uM BRL49653, 1uM Dexamethasone, 0.5uM IBMX, 10ug/mL Insulin). Expression was examined 24 hours after IDMB treatment. Additionally, the effects of addition of TCDD 48 hours prior to IDMB treatment, and EGF addition concurrent with IDMB treatment were examined.
Project description:The objective of the study was to investigate the effect of proteasome inhibition on glucocorticoid and estrogen receptor regulated gene expression. Experiment Overall Design: MCF-7 cells were treated with proteasome inhibitor (MG132), dexamethasone, 17b-estradiol or MG132 plus dexamethasone or MG132 plus 7b-estardiol. Control cells were not treated. RNA was collected from 2 biological experiments.
Project description:To assess the global impact of TGF-beta on alternative splicing, we conducted RNA-seq of total RNAs isolated from various lines of HeLa cells that were generated for this study and treated without or with TGF-beta and EGF. Using rMAT tool from the RNA-Seq data and annotation of transcripts in GTF format, we identified differential alternative splicing events between untreated and treated cell lines. Our study shows that the TGF-beta-mediated alternative splicing affects the protein products of a large number of genes enriched in pathways critical for EMT, cykeskeleton organization, and adherens junction signaling. PCBP1 was required for the most, if not all, alternative splicing events detected. SRA accession number: SRP061634, BioProject ID PRJNA290799. RNAs from Hela cells were treated with TGF-β and EGF, in triplicates and sequenced on HiSeq2000 with 2 samples pooled into one lane with Illumina TruSeq v3 chemistry.
Project description:AtGenExpress: A multinational coordinated effort to uncover the transcriptome of the multicellular model organism Arabidopsis thaliana; The activity of genes and their encoded products can be regulated in several ways, but transcription is the primary level, since all other modes of regulation (RNA splicing, RNA and protein stability, etc.) are dependent on a gene being transcribed in the first place. The importance of transcriptional regulation has been underscored by the recent flood of global expression analyses, which have confirmed that transcriptional co-regulation of genes that act together is the norm, not the exception. Moreover, many studies suggest that evolutionary change is driven in large part by modifications of transcriptional programs. An essential first step toward deciphering the transcriptional code is to determine the expression pattern of all genes. With this goal in mind, an international effort to develop a gene expression atlas of Arabidopsis has been underway since fall 2003. This project, dubbed AtGenExpress, is funded by the DFG, and will provide the Arabidopsis community with access to a large set of Affymetrix microarray data. As part of this collaboration, we have generated expression data from 80 biologicaly different samples in triplicate. det2 mutant seedlings were treated with several brassinosteroid compounds. Experimenter name = Hideki Goda , Yukihisa Shimada; Experimenter institute = AtGenExpress Experiment Overall Design: 26 samples were used in this experiment
Project description:Results of blocking the kinase function of the activated HER-2 oncogene in MCF-10HER-2 cells by treatment with CP724,714 and measuring gene expression as a function of time provides information as to what genes are regulated by HER-2 in these breast epithelial cells that express transformed phenotypes. MCF-10HER-2 cells were treated with the HER-2-specific small molecule kinase inhibitor CP724,714 for 45 hours. Total RNA was collected every 3 hours from parallel cultures throughout the 45 hour duration of treatment and genome-wide analysis of expression was performed on RNA from each time point (total 16 time points, starting at 0 hours treatment).
Project description:Results of blocking HER-2 kinase activity in MCF-10A cells by treatment with CP724,714 and measuring gene expression as a function of time provides information as to what genes are regulated by HER-2 in these nontransformed breast epithelial cells. MCF-10A cells were treated with the HER-2-specific small molecule kinase inhibitor CP724,714 for 45 hours. Total RNA was collected every 3 hours from parallel cultures throughout the 45 hour duration of treatment and genome-wide analysis of expression was performed on RNA from each time point (total 16 time points, starting at 0 hours treatment).
Project description:The transcriptome of murine LC after 24 hours in vivo exposure to a moderate dose of 10 microgram 2,3,7,8-tetrachlorodibenzo-p-dioxin was studied. It was found that mice, although they express the arylhydrocarbon receptor abundantly in LC, are inert to its activation. Target genes are not inducible, in contrast to many other cell types. Experiment Overall Design: i.p. injection, isolation of cells after 24 hours, 95% sorting purity of LC.
Project description:This SuperSeries is composed of the following subset Series: GSE23135: Genome-wide analysis of time-dependent gene expression in MCF-10A cells treated with the EGFR-specific inhibitor gefitinib for 45 hours GSE23136: Genome-wide analysis of time-dependent gene expression in MCF-10HER-2 cells treated with the EGFR-specific inhibitor gefitinib for 45 hours GSE23139: Genome-wide analysis of time-dependent gene expression in MCF-10HER-2/E7 cells treated with the HER-2-specific inhibitor CP724,714 for 45 hours Refer to individual Series
Project description:The bacterial type III secretion system (TTSS) is dedicated to directly effect host cell pathways by pathogens. In order to identify the key host responses of the various parts of the TTSS, we utilized expression profiling of a lung pneumocytes cell line, A549, exposed to various isogenic mutant strains of Pseudomonas aeruginosa PAK. We have devised a novel filtering method to isolate the key responses to the effector proteins as well as the translocation machinery. Individually, the effector proteins elicited host responses that were consistent with the known function of each, many of which either regulated, or are regulated by the cell cycle. However, our analysis has shown that the effector proteins elicit a distinct host expression pattern when present in combination, suggesting that these proteins function in synergy. Furthermore, the host transcriptional response to the translocation complex involved genes that are involved in remodeling of the plasma membrane, suggesting that the host cell is able to sense the protrusion of the TTSS machinery. This study shows that the individual components of the TTSS define an integrated system and that a systems biology approach is required to fully understand the complex interplay between pathogen and host.
Project description:Effect of an immunosupressive dose of TCDD, a ligand for the aryl hydrocarbon receptor, on the gene expression profile of fetal DN thymocytes and thymic emigrants C57BL6 mice were mated and the pregnant dams sacrifice at day 15 of gestation. Fetal thymic lobes were prepared and cultured for 6 days on culture inserts (5-6 lobes/culture insert). Medium, containing either 10 nM TCDD or solvent control was exchanged every 48 hours. At day six (gestation day 21, corresponding to birth), single cell suspensions of the thymocytes were prepared and CD4-CD8- cells isolated by MACS sorting. Purity of the population was checked FACS analysis, to be greater 95%. RNA was purified (TRIZOL), amplified (Ambion Kit) and processed (Affymetrix standard protocol) according to manufacturers instructions. Raw cell files were processed with the bioconductor affy package