Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of human U87 wild type, neo-resistant and PDGF-A dominant negative U87 gliobastoma cells to identify PDGF-dependent patterns of gene expression


ABSTRACT: Overall study: Identification of PDGF-dependent patterns of gene expression in U87 glioblastoma cells. RNA was obtained from triplicate dishes of 5 different groups of U87 cells, each (total 15) analyzed with one U95 microarray chip.,Three different comparisons were made:,1) Clone 3.1 (34580-34582) vs. clone 3.3 (34583-34585) vs. parent U87 (34592-34594).,Purpose: demonstrate that the gene expression profiles between these 3 cell lines are not different, so they could be pooled as a single untreated group.,2) Pooled control group (34580-34585, 34592-34594) vs. clone 8.1 (34586-34588).,Purpose: identify genes specifically controlled by autocrine PDGF activity.,3) Clone 8.1 (34586-34588),vs. clone 8.1 treated with PDGF (34589-34591),Purpose: Identify genes specifically induced by exogenous PDGF.

ORGANISM(S): Homo sapiens

SUBMITTER: David Murray Kaetzel 

PROVIDER: E-GEOD-1923 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Autocrine platelet-derived growth factor-dependent gene expression in glioblastoma cells is mediated largely by activation of the transcription factor sterol regulatory element binding protein and is associated with altered genotype and patient survival in human brain tumors.

Ma Deqin D   Nutt Catherine L CL   Shanehsaz Piam P   Peng Xuejun X   Louis David N DN   Kaetzel David M DM  

Cancer research 20050701 13


A complex profile of gene expression elicited by autocrine platelet-derived growth factor (PDGF) signaling was identified in U87 MG glioblastoma cells by microarray analysis. The most striking pattern observed was a PDGF-dependent activation of at least 25 genes involved with biosynthesis and/or uptake of cholesterol and isoprenoids, including mevalonate pyrophosphate decarboxylase, 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) synthase, HMG-CoA reductase, and low-density lipoprotein receptor.  ...[more]

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