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Clinical and genomic crosstalk between glucocorticoid receptor and estrogen receptor α in endometrial cancer [RNA-seq]

ABSTRACT: Steroid hormone receptors are simultaneously active in many tissues and capable of altering each other's function. Estrogen receptor ɑ (ER) and glucocorticoid receptor (GR) are expressed in the uterus and their ligands have opposing effects on uterine growth. In endometrial tumors expressing high levels of ER, we surprisingly found that expression of GR is associated with poor prognosis. Dexamethasone reduced normal uterine growth in vivo; however, this growth inhibition was abolished in estrogen-induced endometrial hyperplasia. We observed low genomic binding site overlap when ER and GR are induced with their respective ligands; however, upon simultaneous induction they co-occupy more sites. GR binding is significantly altered by estradiol with GR recruited to ER bound loci that become more accessible upon estradiol induction. Gene expression responses to co-treatment were more similar to estradiol, but with novel regulated genes. Our results suggest phenotypic and molecular interplay between ER and GR in endometrial cancer.

ORGANISM(S): Homo sapiens

PROVIDER: GSE109892 | GEO | 2018/03/13

REPOSITORIES: GEO

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Clinical and genomic crosstalk between glucocorticoid receptor and estrogen receptor α in endometrial cancer [ChIP-seq]

Project description:Steroid hormone receptors are simultaneously active in many tissues and capable of altering each other's function. Estrogen receptor ɑ (ER) and glucocorticoid receptor (GR) are expressed in the uterus and their ligands have opposing effects on uterine growth. In endometrial tumors expressing high levels of ER, we surprisingly found that expression of GR is associated with poor prognosis. Dexamethasone reduced normal uterine growth in vivo; however, this growth inhibition was abolished in estrogen-induced endometrial hyperplasia. We observed low genomic binding site overlap when ER and GR are induced with their respective ligands; however, upon simultaneous induction they co-occupy more sites. GR binding is significantly altered by estradiol with GR recruited to ER bound loci that become more accessible upon estradiol induction. Gene expression responses to co-treatment were more similar to estradiol, but with novel regulated genes. Our results suggest phenotypic and molecular interplay between ER and GR in endometrial cancer.

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Clinical and genomic crosstalk between glucocorticoid receptor and estrogen receptor α in endometrial cancer [ATAC-seq]

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ETV4 is necessary for estrogen signaling and growth in endometrial cancer cells [ChIP-seq]

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Project description:Analysis of the genome-wide response of the ER:PRL-HeLa cell line to treatment with estrogen receptor ligands estradiol, 4H-tamoxifen and bisphenol-A.

2011-07-14 | GSE22941 | GEO

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Characterization of a novel hormone-responsive endometrial cancer cell line: HCI-EC-23 [RNA-seq]

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