Please note that we have stopped the regular imports of Gene Expression Omnibus (GEO) data into ArrayExpress. This may not be the latest version of this experiment.
E-GEOD-8087 - RNAi profiling of human MDA-MB-231 cells knocked down for RhoGDIbeta
Submitted on 12 June 2007, released on 15 June 2008, last updated on 10 June 2011
RhoGDIbeta (ARHGDIB) is often expressed in tumor cells. It negatively regulates Rho-GTPases, but may have other functions as well. To analyze its effect on gene expression, RhoGDIbeta was suppressed by RNA interference in MDA-MB-231 breast cancer cells and changes in gene expression monitored by cDNA microarrays. Experiment Overall Design: MDA-MB-231 cells were either transfected with a RhoGDIbeta-specific siRNA or a control siRNA (siLuc), grown for three days, harvested and lysed for total RNA isolation. RNA was subjected to cDNA microarray analysis by using Affymetrix chip HG-U133A. A total of three independent transfection experiments were performed. The samples obtained from experiments 1, 2 and 3 were designated as siLuc_rep1, siLuc_rep2, siLuc_rep3 (siLuc transfected) and siARH_rep1, siARH_rep2, siARH_rep3 (siRhoGDIbeta transfected), respectively.
RNAi profiling by array, unknown experiment type