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Effect of 5a-dihydrotestosterone on breast cancer cell line MDA-MB-453

ABSTRACT: Analysis of MDA-MB-453 breast cancer cells treated with the androgen 5a-dihydrotestosterone (DHT) for 6h, 16h and 48h to define the genes that are differentially regulated in response to DHT.

ORGANISM(S): Homo sapiens

PROVIDER: GSE28305 | GEO | 2011/07/11

SECONDARY ACCESSION(S): PRJNA143193

REPOSITORIES: GEO

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Effect of 5a-dihydrotestosterone on breast cancer cell line MDA-MB-453

Project description:Analysis of MDA-MB-453 breast cancer cells treated with the androgen 5a-dihydrotestosterone (DHT) for 6h, 16h and 48h to define the genes that are differentially regulated in response to DHT. MDA-MB-453 breast cancer cells were treated with 5a-dihydrotestosterone (DHT) for time course, followed by RNA extraction and hybridization on Affymetrix microarrays, in order to obtain the gene expression profiles at three time points. The vehicle treated samples are used as control.

2011-07-11 | E-GEOD-28305 | biostudies-arrayexpress

Androgen receptor cistrome in breast cancer cell line MDA-MB-453 with 5a-dihydrotestosterone (DHT) stimulation

Project description:Androgen receptor (AR) is expressed in 60-70% of breast cancers independent of estrogen receptor (ER) expression, however its function in breast cancer is largely unknown. Our study identified the high level of AR in ERâ??/HER2+ breast tumors and andorgen and AR greatly stimulated growth of MDA-MB-453 breast cancer cells. To define the genome-wide AR binding sites, we performed AR ChIP-seq using MDA-MB-453 breast cancer cells followig stimulation of DHT. We also identified FOXA1 is a crucial AR cofactor in MDA-MB-453 cells and the FOXA cistrome showed signaficant overlap with AR at both early and late time points of DHT stimulation. AR ChIP was performed in MDA-MB-453 breast cancer cells following 5a-dihydrotestosterone (DHT) stimulation for 4h and 16h respectively. FOXA1 ChIP-seq was performed after 4h DHT stimulation in MDA-MB-453 cells.

2011-07-11 | E-GEOD-28788 | biostudies-arrayexpress

Breast cancer cell line MDA-MB-453 response to DHT

Project description:This SuperSeries is composed of the following subset Series: GSE28305: Effect of 5a-dihydrotestosterone on breast cancer cell line MDA-MB-453 GSE28788: Androgen receptor cistrome in breast cancer cell line MDA-MB-453 with 5a-dihydrotestosterone (DHT) stimulation Refer to individual Series

2011-07-10 | E-GEOD-28789 | biostudies-arrayexpress

Androgen receptor cistrome in breast cancer cell line MDA-MB-453 with 5a-dihydrotestosterone (DHT) stimulation

Project description:Androgen receptor (AR) is expressed in 60-70% of breast cancers independent of estrogen receptor (ER) expression, however its function in breast cancer is largely unknown. Our study identified the high level of AR in ERâ/HER2+ breast tumors and andorgen and AR greatly stimulated growth of MDA-MB-453 breast cancer cells. To define the genome-wide AR binding sites, we performed AR ChIP-seq using MDA-MB-453 breast cancer cells followig stimulation of DHT. We also identified FOXA1 is a crucial AR cofactor in MDA-MB-453 cells and the FOXA cistrome showed signaficant overlap with AR at both early and late time points of DHT stimulation.

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Amplitude modulation of androgen signaling by c-MYC [ChIP-Seq]

Project description:Androgen-stimulated growth of the molecular apocrine breast cancer is mediated by an androgen receptor (AR)-regulated transcriptional program. Through profiling the genomic licalizations of AR and its co-regulators FOXA1 and TCF7L2 in MDA-MB-453 breast cancer cells, we revealed the molecular details of the AR-centered regulatory network. We further identified that c-MYC is a key downstream target co-regulated by AR, FOXA1 and TCF7L2, and reinforces the transctiopnal activation of androgen-responsive genes in this subtype of breast cancers. AR and FOXA1 ChIP-seq were performed in MDA-MB-453 breast cancer cells with treatment of 5a-dihydrotestosterone (DHT) for 16 h. TCF7L2 ChIP-seq was performed in MDA-MB-453 cells treated with vehicle or DHT for 16 h, respectively. MYC ChIP-seq was performed in MDA-MB-453 cells following 6 h DHT stimulation.

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Adipose tissue of gonadectomized mice injected with dihydrotestosterone

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Homo sapiens

Project description:Androgen receptor cistrome in breast cancer cell line MDA-MB-453 with 5a-dihydrotestosterone (DHT) stimulation

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Dihydrotestosterone induced changes in gene expression in immortalized human conjunctival epithelial cells

Project description:Genome-wide analysis of dihydrotestosterone (DHT) induced changes in gene expression in immortalized human conjunctival epithelial cells. Analysis of regulation of immortalized human conjunctival epithelial cells by dihydrotestosterone at gene expression level. The hypothesis tested in the present study was that the androgen-eye interaction in ocular surface epithelial cells like conjunctival cells is influenced by androgens through regulation of the expression of multiple genes. Results provide important information of the differential regulation of numerous genes in response to dihydrotestosterone incubation of immortalized human conjunctival epithelial cells.

2011-03-31 | GSE18094 | GEO

FoxA1 specifies unique androgen and glucocorticoid receptor binding events in prostate cancer cells (mRNA)

Project description:We report the androgen receptor recruitment to the chromatin of androgen responsive prostate cancer cell lines, LNCaP-1F5 and VCaP in response to physiological androgen 5a-dihydrotestosterone (DHT) using ChIP-sequencing. We compare the AR recruitment by DHT to that by partial agonist/antagonist cyproterone acetate and mifepristone (RU486) in LNCaP-1F5 cells. We also report the role of glucocorticoid receptor recruitment in presence of dexamethasone (Dex) in androgen responsive prostate cancer cells. The AR and GR cistrome analysis is subsequently compared with gene expression data and RNA Pol II analysis. The ChIP-seq has been performed using AR, GR, RNA Pol II antibodies. Expression profiling by microarray of LNCaP-1F5 cells treated with vehicle, 100 nM 5a-dihydrotestosterone (DHT), 100 nM dexamethasone (Dex), 1000 nM cyproterone acetate (CPA), 100 nM mifepristone (RU486) and combination of 100 nM DHT,100 nM Dex for 24 hours.

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