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Gene expression profile in MCF7 breast cancer cells after 78 functionallly important molecules were knocked down using siRNA.

ABSTRACT: Affymetrix microarray data was generated from MCF7 breast cancer cells treated in vitro with siRNAs against 78 transcription factors and signalling molecules.

ORGANISM(S): Homo sapiens

PROVIDER: GSE31912 | GEO | 2012/03/15

SECONDARY ACCESSION(S): PRJNA145053

REPOSITORIES: GEO

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Gene expression profile in MCF7 breast cancer cells after 78 functionallly important molecules were knocked down using siRNA.

Project description:Affymetrix microarray data was generated from MCF7 breast cancer cells treated in vitro with siRNAs against 78 transcription factors and signalling molecules. Gene expresion of 78 functionally important molecules were knocked down in MCF7 breast cancer cells using siRNA. Then the gene expression profiles of these MCF7 cells, along with untreated cells and non-targetting control (SICONTROL) treated cells were analysed using microarrays.

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Project description:The goal of this study is to identify ERalpha-target genes affected by knocking down of the histone arginine methyltransferase CARM1 in MCF7 breast cancer cells. The roles of CARM1 in ERalpha+ breast cancer was not well characterized. Therefore, we created a Dox inducible CARM1 knockingdown MCF7 cell line where CARM1 is decreased to 20% of endogeneous level to determine the created a Dox-inducible CARM1shRNA overexpressing MCF7 cells for evaluation of the global effects of CARM1 on ERalpha-target gene expression. MCF7-tet-on-CARM1shRNA clone 1 were treated under 4 conditions: DMSO; Dox; E2 (10nM); Dox+E2. In Dox+E2 condition, cells were pre-treated with Dox for 5 days before treating with E2 for 4 hours. 3 biological replicates were included and total of 12 samples were analyzed.

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