Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA363069 | ENA |
REPOSITORIES: ENA
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Project description:Timecourse of estradiol (10nM) exposure in MCF7 breast cancer cells.
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Project description:We profiled global PBX1 binding in MCF7 cells. The hypothesis tested was that PBX1 binds regions that recruit ERa following estradiol stimulation. Profiling of PBX1 cistrome in MCF7 breast cancer cells
2011-09-29 | E-GEOD-28007 | biostudies-arrayexpress
Project description:To establish a data-driven learning model of the temporal dynamics and 3D chromatin reorganization, we conducted tethered chromatin conformation (TCC) sequencing to examine 3D structure dynamics in estradiol (E2)-induced breast cancer MCF7 cells and Tamoxifen resistant breast cancer MCF7 cells.
2019-04-09 | GSE108787 | GEO
Project description:Gene expression response to high radiation treatment in MCF7 breast cancer cell line
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Project description:Progesterone and estrogen are important drivers of breast cancer proliferation. Herein, we probed estrogen receptor-α (ER) and progesterone receptor (PR) cross-talk in breast cancer models. Stable expression of PR-B in PR-low/ER+ MCF7 cells increased cellular sensitivity to estradiol and insulin-like growth factor 1 (IGF1), as measured in growth assays performed in the absence of exogenous progestin; similar results were obtained in PR-null/ER+ T47D cells stably expressing PR-B. Genome-wide microarray analyses revealed that unliganded PR-B induced robust expression of a subset of estradiol-responsive ER target genes, including cathepsin-D (CTSD). Estradiol-treated MCF7 cells stably expressing PR-B exhibited enhanced ER Ser167 phosphorylation and recruitment of ER, PR and the proline-, glutamate- and leucine-rich protein 1 (PELP1) to an estrogen response element in the CTSD distal promoter; this complex co-immunoprecipitated with IGF1 receptor (IGFR1) in whole-cell lysates. Importantly, ER/PR/PELP1 complexes were also detected in human breast cancer samples. Inhibition of IGF1R or phosphoinositide 3-kinase blocked PR-B-dependent CTSD mRNA upregulation in response to estradiol. Similarly, inhibition of IGF1R or PR significantly reduced ER recruitment to the CTSD promoter. Stable knockdown of endogenous PR or onapristone treatment of multiple unmodified breast cancer cell lines blocked estradiol-mediated CTSD induction, inhibited growth in soft agar and partially restored tamoxifen sensitivity of resistant cells. Further, combination treatment of breast cancer cells with both onapristone and IGF1R tyrosine kinase inhibitor AEW541 was more effective than either agent alone. In summary, unliganded PR-B enhanced proliferative responses to estradiol and IGF1 via scaffolding of ER-α/PELP1/IGF1R-containing complexes. Our data provide a strong rationale for targeting PR in combination with ER and IGF1R in patients with luminal breast cancer.
2015-03-15 | GSE45643 | GEO
Project description:Translatome and transcriptome profiling of estradiol response in MCF7 cells
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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
Project description:The Estrogen Receptor cofactors SRC1 (NCOA1, KAT13A), SRC2 (NCOA2, GRIP1, TIF2, KAT13C) , SRC3 (NCOA3, AIB1, KAT13B, Rac3) , CBP and p300 are assessed for their genome-wide chromatin binding capacities in the breast cancer cell line MCF7. To determine the Estrogen Receptor dependency of interactions, experiments were performed in the absence of hormone and after Estradiol treatment. In addition, the data were compared with Estrogen Receptor ChIP-seq data from the same timepoint of Estradiol treatment.
2011-10-25 | E-MTAB-785 | biostudies-arrayexpress
Project description:Wild type (wt) MCF7 cells, modelling breast cancer at primary diagnosis, were cultured in phenol red-free RPMI supplemented with 10% FBS and 1nM estradiol (E2). Long-term oestrogen deprived (LTED) cell lines, which model resistance to endocrine therapy, were cultured in phenol red-free RPMI in the absence of exogenous E2 and supplemented with 10% dextran charcoal-stripped bovine serum (DCC). Samples were harvested at baseline and at the point of resistance (LTED). To reveal differential protein abundances between wt-MCF7 and MCF7 LTED, the peptides were labelled with chemical labelling and underwent fractionation using OFFGEL electrophoresis.
2016-06-01 | PXD004085 | Pride
Project description:Wild type (wt) MCF7 cells, modelling breast cancer at primary diagnosis, were cultured in phenol red-free RPMI supplemented with 10% FBS and 1nM estradiol (E2). Long-term oestrogen deprived (LTED) cell lines, which model resistance to endocrine therapy, were cultured in phenol red-free RPMI in the absence of exogenous E2 and supplemented with 10% dextran charcoal-stripped bovine serum (DCC). Samples were harvested at baseline and at the point of resistance (LTED). In order to do comparative analysis in the ER-interactome of wt-MCF7 and MCF7-LTED cells, ER-RIME (rapid immunoprecipitation mass spectrometry of endogenous proteins) was conducted in these cells.
2020-07-13 | PXD004648 | Pride