Transcription profiling array of human glioblastoma cell line U87 comparing control cells with U87-shLIN7a knockdown cells and rescue cells which have the same Lin7a knockdown but re-express Lin7a lentivirally (U87-shLin7a+Lin7A)
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ABSTRACT: After performing an in-vivo screening with U87 glioblastoma cells transduced with a knockdown library several genes could be identified. Lin7a which was one of the candidates was further evaluated. Single knockdown of Lin7a in U87 conferred a pro-invasive phenotype in-vitro and in-vivo. Overexpression of Lin7a in the Primary glioblastoma cell line T269 reduced its invasive phenotype. To decipher the underlying pathways U87 control, U87-shLIN7a and U87-shLin7a+Lin7A (rescue cells after re-expression of Lin7A) were analyzed after in-vitro culture by a transcription profiling Array.
Project description:After performing an in-vivo screening with U87 glioblastoma cells transduced with a knockdown library several genes could be identified. LAPTM5 which was one of the candidates was further evaluated. Single knockdown of LAPTM5 in U87MG conferred a pro-invasive phenotype in-vitro and in-vivo. To decipher the underlying pathways U87MG control cells (U87RNAi) and U87shLAPTM5 were analyzed after in-vitro culture by a transcription profiling Array.
Project description:The formation of U87 tumor spheres was associated with expression changes of many genes which was reverted by the treatment with ITE(2-(1'H-indole-3'-carbonyl)-thiazole-4-carboxylic acid methyl ester). We used DNA microarrays to profile gene expression in U87 tumor spheres treated with ITE and identified distinct classes of up-regulated and down-regulated genes during this process. U87 cells were selected for RNA extraction and hybridization on Affymetrix microarrays. We compared the expression profiles of parental U87 cells, U87 tumor sphere cells treated with vehicle (DMSO) and U87 tumor sphere cells treated with ITE.
Project description:Transcriptome analysis was performed from human U87 glioblastoma cell clones: U87 IRE1.NCK DN (U87dn, IRE1 dominant negative) and U87 control (U87ctrl, empty plasmid). Cells were grown in DMEM supplemented with 10% FBS and glutamine for 16 hours in culture prior mRNA isolation and analyses U87dn cells expressing a dominant negative transgene of IRE1alpha were compared to U87ctrl cells transfected with the corresponding empty plamid to identify genes associated to tumor invasion and angiogenesis.
Project description:U87 cell lines were stable transfected with C19ORF63 (Human hematopoietic peptide secreted-1 - HSS1). HSS1 is a truly novel protein defining a new class of secreted factors. U87 cell line overexpressing HSS1 greatly reduced their proliferation rate compared to mock-transfected cells. Microarray analysis was used to detail gene expression underlying the anti-proliferative and anti-tumorigenic effect of HSS1 in U87 cells. Exponentially growing U87 cells at growth curve day 5 were harvested for total RNA extraction and hybridization on Affimetrix microarrays. Three groups of samples were evaluated in triplicates: U87 wild-type, U87 -pcDNA3.1 mock-transfected, U87-pcDNA-HSS1. Cells were stable transfected with pcDNA3.1 empty vector or hHSS1. hHSS1-expressing cells and control cells were at confluence 40-80% when harvested. Trypan blue analysis of the number of viable cells showed a significant anti-proliferative effect in U87 cells expressing hHSS1 as compared to the control cells.
Project description:We analyzed the expression profiles of hsa-miR-145-5p or hsa-miR-31-5p-targeting genes relating to invasion or migration after co-overexpression of hsa-miR-145-5p and 31-5p Gene expression profiles of U87 cells after co-transfection with hsa-miR-145-5p and 31-5p mimics, and U87 cells after transfection miR mimic negative control
Project description:G72 is a susceptible gene for schizophrenia. No matter genetic variation or serum levels, G72 has been recognized as a biomarker for schizophrenia. In some reports, G72 genetic variation also related with bipolar disorder. Although G72 has been studied for 15 years, the protein function is still unclear. This study aims for predicting the biological function of G72 and hope to elucidate its biological role. two independent control (U87 cells transfected with empty vector) and two experiements (U87 cells transfected with G72 overexpression plasmid).
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:U87 cell spheroids were harvested from collagen on day 0 (no migration), or day 3 (extensive migration). The RNA extracted from these cells was used to identify microRNA alterations that occur during glioma cell line migration.
Project description:To test the hypothesis that circRNAs might encode functional peptides in mammalian cells, we studied the long intergenic non-protein coding RNA, p53 induced transcript (LINC-PINT), which was previously reported as a tumor suppressor and connected p53 activation with polycomb repressive complex 2 (PRC2). We selected this long noncoding RNA (lncRNA) for further analysis because LINC-PINT has a long exon 2 which in accordance with the bioinformatical analyzed circular RNA standard.The following immunoblotting showed 87aa peptide level also decreased, indicating that this peptide is encoded by circPINTexon2. We name this circRNA encoded peptide PINT87aa. To investigate the possible regulatory role of PINT87aa, we did the expression micro array in PINT87aa stably transfect U251 or U87 glioblastoma cells and their control cells. The array analysis reveals that PINT87aa may involve in the cell cycle regulation, anti-apoptosis effects and multiple oncogenic signaling pathway activation.