Project description:Analysis of expression changes of cultured HepG2 hepatoma, U87 glioma, and MDA-MB231 breast cancer cells subjected to hypoxia (0.5% O2) for 0, 4, 8, 12 hours . Results provide insight to cell type-specific response to hypoxia. HepG2 hepatoma, U87 glioma, and MDA-MB231 breast cancer cells were collected under normoxic conditions (~19% O2, 0 hours) and after 4, 8 and 12 hours of hypoxia treatment (0.5% O2). For each cell line, three replicates of total RNA at each time point were prepared using Trizol and submitted to the DFCI Microarray Core for labeling, hybridization to Affymetrix HG-U133Plus2 oligonucleotide arrays and image scanning.
Project description:Analysis of expression changes of cultured HepG2 hepatoma, U87 glioma, and MDA-MB231 breast cancer cells subjected to hypoxia (0.5% O2) for 0, 4, 8, 12 hours . Results provide insight to cell type-specific response to hypoxia.
Project description:Hypoxia-Inducible Factor 1 (HIF-1) plays a key role in cellular adaptation to hypoxia. To better understand the determinants of HIF-1 binding and transactivation, we used ChIP-chip and gene expression profiling to define the relationship between the epigenetic landscape, sites of HIF-1 binding, and genes transactivated by hypoxia in two cell lines, HepG2 hepatoma cell line and U87 glioma cell line.
Project description:An experimental lung metastasis assay was used to derive an invasive subline of U87 that is metastatic in mice. We used microarray analyses to find out over-represented gene ontologies that can explain the observed enhanced invasiveness of U87-2M1 cells. Early passage U87-2M1 cells and parental U87 glioma cells from ATCC were selected for RNA extraction and hybridization on microarray
Project description:As a first step towards identifying the target genes of EGFR activity in glioma cells, genome-wide expression analyses were performed using the Affymetrix GeneChip Human Genome U133A array. To accomplish this, mRNA expression levels of these genes were measured in the glioblastoma cell lines, U87 and U178, engineered with EGFR by retrovirus transduction (termed U87-EGFR and U178-EGFR respectively), with or without 20 ng/mL EGF treatment for 3 h. U87 and U178 cells engineered to express EGFR were stimulated with or without EGF. The experiment was replicated twice for each U87 and U178 cells.
Project description:This SuperSeries is composed of the following subset Series: GSE34454: Expression data from transfection of SW1783 glioma cells with microRNA-376a* for 24 hours GSE34455: Expression data from transfection of U87 glioma cells with miR-376a* for 24 hours GSE34456: Expression data from transfection of U87 glioma cells with miR-376a* for 72 hours Refer to individual Series
Project description:MicroRNA-10b may target numerous genes in gliomagenesis. The target genes of miR-10b may differ according to the cellular context. We used microarray analyses to determine the phenotypic effects and gene targets of miR-10b by silencing miR-10b in invasive U87-2M1 glioma cells. Early passage U87-2M1 cells treated with the baculoviral control decoy vector or miR-10b decoy vector were selected for RNA extraction and hybridization on microarray
Project description:In order to confirm that L3 (G. lucidum triterpenoids fraction) could influence circRNA expression in glioma, U87 and L3-treated U87 cells were sequenced using an Illumina HiSeq 4000 sequencing system. There were 131 circRNAs identified as down-regulated and 131 circRNAs identified as up-regulated after the U87 cells were co-incubated with L3.