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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Promoter methylation data: OHT/ICI-sensitive vs. -resistant cell lines

ABSTRACT: MCF7 breast cancer cell lines: drug-resistant (OHT and ICI) cell lines vs. drug-sensitive (wild type) cell lines. Assessment of association between gene expression and methylation. Two comparisons: OHT-resistant vs. wild type, and ICI-resistant vs. wild type. OHT: 4-hydroxytamoxifen ICI: fulvestrant ((ICI 182780) This submission represents the methylation component of the study.

ORGANISM(S): Homo sapiens

SUBMITTER: Jaesik Jeong

PROVIDER: E-GEOD-25519 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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An empirical Bayes model for gene expression and methylation profiles in antiestrogen resistant breast cancer.

Jeong Jaesik J Li Lang L Liu Yunlong Y Nephew Kenneth P KP Huang Tim Hui-Ming TH Shen Changyu C

BMC medical genomics 20101125

<h4>Background</h4>The nuclear transcription factor estrogen receptor alpha (ER-alpha) is the target of several antiestrogen therapeutic agents for breast cancer. However, many ER-alpha positive patients do not respond to these treatments from the beginning, or stop responding after being treated for a period of time. Because of the association of gene transcription alteration and drug resistance and the emerging evidence on the role of DNA methylation on transcription regulation, understanding ...[more]

PMID: 21108837

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Promoter methylation data: OHT/ICI-sensitive vs. -resistant cell lines

Project description:MCF7 breast cancer cell lines: drug-resistant (OHT and ICI) cell lines vs. drug-sensitive (wild type) cell lines. Assessment of association between gene expression and methylation.

2011-10-05 | GSE25519 | GEO

The expression patterns of 17b-estradiol responsive genes in wt MCF7, OHT resistant MCF7 and ICI resistant MCF7

Project description:Compare the expression pattern of 17b-estradiol responsive genes in parent, OHT-resistant and ICI-resistant breast cancer cells. Keywords: 17b-estradiol responsive genes, OHT resistance, Fulvestrand resistance

2007-09-14 | GSE5840 | GEO

Transcription profiling of human wild type MCF7, OHT resistant MCF7 and ICI resistant MCF7 17b-estradiol responsive genes

Project description:Compare the expression pattern of 17b-estradiol responsive genes in parent, OHT-resistant and ICI-resistant breast cancer cells. Experiment Overall Design: Data for 4 replicate experiments performed with biologically independent samples. Experiment Overall Design: KN01M001v0 DMSO (control) wt MCF7 -> GSM136152 Experiment Overall Design: KN01H002v0 DMSO (control) wt MCF7 -> GSM136148 Experiment Overall Design: KN01H003v0 DMSO (control) wt MCF7 -> GSM136150 Experiment Overall Design: KN01H004v0 DMSO (control) wt MCF7 -> GSM136152 Experiment Overall Design: KN01M005v0 17b-estradiol (10nM 4h) wt MCF7 -> GSM136153 Experiment Overall Design: KN01H006v0 17b-estradiol (10nM 4h) wt MCF7 -> GSM136154 Experiment Overall Design: KN01H007v0 17b-estradiol (10nM 4h) wt MCF7 -> GSM136155 Experiment Overall Design: KN01H008v0 17b-estradiol (10nM 4h) wt MCF7 -> GSM136156

2008-06-14 | E-GEOD-5840 | biostudies-arrayexpress

Homo sapiens

Project description:Promoter methylation data: OHT/ICI-sensitive vs. -resistant cell lines

| PRJNA133775 | ENA

ER-dependent gene expression in LY2 cell line

Project description:ER-dependent gene expression was investigated in the LY2 endocrine resistant cell line by treatment with ICI 182780. Cells were steroid depleted for 3 days prior to treatment with ICI for 6 hours. Four biological replicates were processed and analysed.

2014-09-18 | E-MTAB-1870 | biostudies-arrayexpress

Mouse iPS cells-derived 3D-retinas: Vehicle control- vs. 4-hydroxytamoxifen (4-OHT)-treated 3D-retinas w/o supplements

Project description:Transcriptional profiling of 3D-retinas differentiated from mouse iPS cells comparing vehicle control with 4-OHT-treated w/o supplements. 4-OHT is an inverse agonist of estrogen-related receptor beta (ERRÎ²), a rod-enriched transcription factor responsible for maintenance of rod photoreceptor cells and the treatment induces photoreceptor specific cell death in the 3D-retinas. Goal was to understand the mechanism of protective effects of representative ophthalmic supplements for treating the photoreceptor degeneration. 4-OHT w/o supplements-induced gene expression in the 3D-retinas was measured at DD 25 when the photoreceptor cells started to be degenerated. Four-condition experiment, vehicle control- vs. 5 ÂµM 4-OHT- vs. 5 ÂµM 4-OHT with 400 ÂµM vitamin E- vs. 5 ÂµM 4-OHT with 200 nM lutein-treated 3D-retinas. Biological replicates: each sample has 24 3D-retinas and 1replicate.

2016-07-05 | E-GEOD-83984 | biostudies-arrayexpress

Mouse iPS cells-derived 3D-retinas: Vehicle control- vs. 4-hydroxytamoxifen (4-OHT)-treated 3D-retinas

Project description:Transcriptional profiling of 3D-retinas differentiated from mouse iPS cells comparing vehicle control- with 4-OHT-treated. 4-OHT is an inverse agonist of estrogen-related receptor beta (ERRÎ²), a rod-enriched transcription factor responsible for maintenance of rod photoreceptor cells and the treatment induces photoreceptor specific cell death in the 3D-retinas. Goal was to understand the mechanism of 4-OHT-induced degeneration of photoreceptor cells in the 3D-retinas. 4-OHT-induced gene expression in the 3D-retinas was measured at DD 26 when the photoreceptor cells were degenerated. Two-condition experiment, vehicle control- vs. 5 ÂµM 4-OHT-treated 3D-retinas. Biological replicates: each sample has 24 3D-retinas and 1 replicate.

2016-07-05 | E-GEOD-83985 | biostudies-arrayexpress

Transcription profiling of human MCF-7 breast cancer cells treated with E2, ICI 182,789 (ICI), Raloxifene (Ral), and/or trans-hydroxytamoxifen (TOT)

Project description:MCF-7 breast cancer cells were treated with E2, ICI 182,789 (ICI), Raloxifene (Ral), and/or trans-hydroxytamoxifen (TOT) for 8 or 48 h. Duplicate samples are labeled set A or set B.

2007-09-27 | E-GEOD-848 | biostudies-arrayexpress

RNA-sequencing in mouse mastocytoma cell line P815

Project description:We report the transcriptome sequencing results of the mouse mastocytoma cell line P815. After ESR1-specific shRNA vectors (SH) or the negative control vectors (NC) were transfected, the transcriptome in P815 after estrogen stimulation. We also detected the transcriptome of P815 cells after estrogen stimulation with the administration of estrogen receptor inhibitors Tamoxifen and ICI-182780.

2021-09-14 | GSE181773 | GEO

Estradiol and ICI 182,780 infusions induce similar transcriptomic response in late gestation fetal hypothalamus

Project description:Estradiol plays a critical role stimulating the fetal hypothalamus-pituitary-adrenal axis at the end of gestation. Estradiol action is mediated through nuclear and membrane receptors that can be modulated by ICI 182,780, a pure anti-estrogen compound. The objective of this study was to evaluate the transcriptomics of estradiol and ICI 182,780, testing the hypothesis that ICI 182,780 blocks the action of estradiol in the fetal hypothalamus. However, we found that a short term (48 hrs) infusion with ICI 182,780 induces a similar transcriptomic response than estradiol infusion in the late gestation ovine fetal hypothalamus, being more evident with higher doses of ICI 182,780. These results suggest that ICI 182,780 is primarily an agonist of estradiol in the developing brain.

2018-01-31 | GSE99497 | GEO

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