Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Expression data from human ovarian cancer cells induced by IL-6 and CNTO328

ABSTRACT: The SKOV-3 and Caov-3 ovarian cancer cell lines where seeded onto the 100mm cell culture plate for overnight. The cells were then incubated with IL-6 (30ng/ml) alone for one hour or pre-treated with siltuximab for four hours and then treated with IL-6 for one hour. Total RNA was collected from these cells using TRIzolÂ® Reagent (GIBCO Grand Island, NY) according to the manufacturerâ??s instructions. To account for and eliminate biologic noise, RNA was isolated from three distinct flasks of each cell line and pooled together. RNA quality was determined via ethidium bromide staining following agarose/formaldehyde gel electrophoresis. Total RNA was processed and hybridized to Affymetrix Genechip HG-U95Av2 arrays (Affymetrix, Santa Clara, CA) by the Gene Array Technology Center at Harvard Medical School (http://genome.med.harvard.edu). Affymetrix Gene Chip U133 Plus 2.0 in the first and most comprehensive whole human genome expression array. This array completes coverage of the whole human Genome with over 47,000 transcripts. The expression level of each mRNA is quantified by measuring its hybridization to these 23-mers in comparison to its hybridization to a one-base mismatch oligonucleotide. GeneSifter was used to analyze the microarray data (http://www.genesifter.net/web/). Fold change in expression between sensitive and resistant cell lines was evaluated using the Mann-Whitney test. A tenfold or greater change in intensity combined with a Mann-Whitney associated P value less than 0.05 was used as the criterion for inclusion in our filtered data set. Evalutate the effect of CNTO328 on IL-6 induced gene expression in ovarian cancer cells

ORGANISM(S): Homo sapiens

SUBMITTER: Zhenfeng Duan

PROVIDER: E-GEOD-20272 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Understanding congenital liver disease requires elucidation of the signaling pathways and transcriptional events in the developing liver. Comprehensive assessment of gene expression between 10.5 and 16.5 dpc in the developing mouse liver and comparison with adult liver and non-hepatic embryonic tissue was validated with real-time PCR and in situ hybridization. The broad nature of the analysis provides insights into patterns of genetic control of hepatogenesis. Pathways implicated in human disease are highly regulated at the transcriptional level. Rather than activating or inhibiting a pathway or biological process by altering the expression of a single signaling molecule, transcriptional changes in large numbers of genes in a pathway or process are regulated in a coordinated manner. For example, both TGF-beta and Notch signaling is inhibited during hepatogenesis not just by decreasing transcription of multiple pathway members, but also with a complementary increase in the transcription of a pathway inhibitor. Similarly, genes related to specific biological processes exhibit strong temporal synchronization in which multiple members of the pathway have similar transcriptional regulation over time. Global coordination of signaling or functional families at the transcriptional level may be a mechanism to produce robustness of the desired outcomes. In addition, this comprehensive analysis provides a database for the further study of transcriptional events during liver development by identifying liver-specific, highly regulated genes. Experiment Overall Design: In order to provide transcriptional profile of the developing liver compared both to normal adult liver and non-hepatic embryonic tissueswe performed high-density microarray analysis using Affymetrix MG 430 2.0 chips for embryonic liver samples at 10.5, 11.5, 12.5, 13.5, 14.5, and 16.5 days post conception (dpc), embryo-minus liver tissues at 10.5, 11.5, 12.5, and 14.5 dpc, and normal 10-week-old adult mouse liver. Each sample consisted of at least five embryos.

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Expression data from human ovarian cancer cells induced by IL-6 and CNTO328

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