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Transcriptional Profiling of Responses to Estrogen and Progesterone in Mammary Gland

ABSTRACT: Epidemiological studies have shown that a full-term pregnancy at early age can decrease the breast cancer risk up to one-half. Pregnancy has been shown to prevent carcinogen-induced mammary tumors in rodents as well. The protective effect of pregnancy can be mimicked by administration of estrogen and progesterone to nulliparous rodents in amounts that are similar to those during pregnancy and alters responsiveness of p53 to DNA damage. Ovariectomized mice were treated with estrogen (E), progesterone (P), both estrogen and progesterone (E + P), or vehicle (V) alone and global expression profiles was analyzed to identify the mechanisms by which estrogen and progesterone combine to sensitize p53 function. Keywords: comparative hormone treatment

ORGANISM(S): Mus musculus

PROVIDER: GSE5483 | GEO | 2008/07/31

SECONDARY ACCESSION(S): PRJNA96001

REPOSITORIES: GEO

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Transcription profiling of mouse mammary gland responses to estrogen and progesterone

Project description:Epidemiological studies have shown that a full-term pregnancy at early age can decrease the breast cancer risk up to one-half. Pregnancy has been shown to prevent carcinogen-induced mammary tumors in rodents as well. The protective effect of pregnancy can be mimicked by administration of estrogen and progesterone to nulliparous rodents in amounts that are similar to those during pregnancy and alters responsiveness of p53 to DNA damage. Ovariectomized mice were treated with estrogen (E), progesterone (P), both estrogen and progesterone (E + P), or vehicle (V) alone and global expression profiles was analyzed to identify the mechanisms by which estrogen and progesterone combine to sensitize p53 function. Experiment Overall Design: Twenty ovariectomized animals were used for examine transcriptional effects of hormones by microarray. The hormones were administered by daily i.p. injection for 4 days.Treatment groups included: 4 animals receiving 2ug 17-beta-estrogen (E), 4 animals receiving 1mg progesterone (P), 5 animals receiving both estrogen and progesterone (E+P) and 4 animals receiving 100ul sesame oil (V). Epithelial-free fat pads from 3 animals receiving E+P were also analyzed to distinguish responses to E+P in the stroma (E+P CFP). Lymph nodes were removed from mammary glands at the time of collection.

2008-10-18 | E-GEOD-5483 | biostudies-arrayexpress

Progesterone receptor-dependent gene signatures in the mouse mammary gland after acute progesterone treatment

Project description:Progesterone (P) acting through its cognate nuclear receptors (PRs) plays an essential role in driving pregnancy-associated branching morphogenesis of the mammary gland. However, the fundamental mechanisms, including global cistromic and acute genomic transcriptional responses that are required to elicit active branching morphogenesis in response to P, have not been elucidated. We used microarray analysis to identify global gene expression signatures that are acutely regulated by PRs in the mouse mammary gland after acute P treatment. Mammary gland gene expression data from 10-week-old ovariectomized wildtype and progesterone receptor null mice treated subcutaneously with 17β-Estradiol for 24 hours and then 17β-Estradiol plus Progesterone for 8 or 24 hours. Three replicate pools were tested with three mice per pool.

2013-08-27 | E-GEOD-42858 | biostudies-arrayexpress

Progesterone Regulation of Extracellular Vesicles in the Uterine Luminal Fluid of Sheep (miRNA-Seq)

Project description:Progesterone (P4) acts via the endometrium to modify the uterine environment and promotes conceptus growth for elongation and pregnancy establishment. Ewes were ovariectomized and treated with P4 for 14 days or P4 for 14 days and RU486, a progesterone receptor antagonist, from days 8 to 14. Small RNA sequencing of endometrium and EVs from the uterine lumen detected expression of 768 miRNAs and P4 regulation of 9 endometrial and 7 extracellular vesicle miRNAs.

2017-09-08 | GSE103595 | GEO

Progesterone Regulation of Extracellular Vesicles in the Uterine Luminal Fluid of Sheep (RNA-Seq)

Project description:Progesterone (P4) acts via the endometrium to modify the uterine environment and promotes conceptus growth for elongation and pregnancy establishment. Ewes were ovariectomized and treated with P4 for 14 days or P4 for 14 days and RU486, a progesterone receptor antagonist, from days 8 to 14. Interrogation of the endometrial transcriptome resulted in 1,611 differentially abundant transcripts with 931 increased and 680 decreased in P4 as compared to P4+RU treated ewes.

2017-09-08 | GSE103593 | GEO

Effect of Ovarian Hormone on Gene Expression in Rhesus Dorsal Raphe Nucleus with Human U95A Affymetrix Chip

Project description:Small blocks of the midbrain containing the dorsal raphe nucleus was obtained from ovariectomized monkeys treated with placebo, estrogen, progesterone or estrogen plus progesterone for one month. The RNA was extracted and hybridized to the human U95A Affymetrix chip.

2009-05-21 | GSE16171 | GEO

Effect of Ovarian Hormone on Gene Expression in Rhesus Dorsal Raphe Nucleus with Rhesus Affymetrix Chip

Project description:A small block of the midbrain containing the dorsal raphe nucleus was obtained from ovariectomized monkeys treated with placebo, estrogen, progesterone or estrogen plus progesterone for one month. The RNA was extracted and hybridized to the Rhesus Affymetrix chip. The results were analyzed with GCOS 1.0

2009-05-21 | GSE16172 | GEO

Effects of estrogen and progesterone on glycosyltransferase expression in mice

Project description:This laboratory studies the structural basis of carbohydrate function in terms of adhesion and other biological processes. The Fisher lab is testing the hypothesis that the mucin-coated oral and uterine cavities present similar carbohydrate receptors that specify the bacterial ecology of both regions and the repertoire of these oligosaccharide species is hormonally regulated. This theory also suggests that certain individuals express carbohydrate receptors that make them susceptible to both periodontal disease and preterm labor. Experimental procedure: 40 mature female mice were ovariectomize . The mice were allowed to rest for two weeks to eliminate any remaining endogenous estrogen (E2) and progesterone (P4). Then the mice were separated into four groups (10 each) that received the treatment indicated. Group 1: ovariectomized mice with no supplement, only sesame oil vehicle. Group 2: ovariectomized mice with only P4 supplement (2 mg/day/mouse). Group 3: ovariectomized mice with E2 supplement (100 ng/day/mouse). Group 4: ovariectomized mice with both P4 (2 mg/day/mouse) and E2 (100 ng/day/mouse) supplement. The treatment lasted for 4 days; the steroids were dissolved in sesame oil and injected subcutaneously. After treatment, salivary glands (parotid, submandibular, and sublingual gland), submandibular lymph nodes and uterine horns with cervix were collected. Total RNA was extracted from these samples using Trizol.

2011-03-02 | E-GEOD-27598 | biostudies-arrayexpress

Attenuation of progesterone driven mammary stem cells population by telapristone acetate

Project description:ovariectomized mice treated with E2+Progesterone, E2+Progesterone+TPA, E2+Progesterone+RU486 and sham for 14 days, followed by isolation of luminal mature, luminal progenitor and mammary stem cells through FACS and RNASeq performed for each cell lineage population. TPA and RU486 treated mice show significant decline in mammary stem cell pool pulation comapared to EP treated mice

2020-02-26 | GSE127197 | GEO

Effect of Ovarian Hormone on Gene Expression in Rhesus Dorsal Raphe Nucleus with Human U95A Affymetrix Chip

2009-05-21 | E-GEOD-16171 | biostudies-arrayexpress

Progesterone Receptor A Isoform Specific ChIP-Seq

Project description:Chromatin immunoprecipitation for the progesterone receptor (PGR) and sequencing was performed on Pgrcre/-mPRALsL/+ mice. These mice exhibit no endogenous PGR expression, yet exhibit constitutive expression of the PGR-A isoform in PGR positive tissues due to the presence of a conditional expression allele. Mice were ovariectomized, rested for two weeks, and treated with progesterone for 1 hour before harvesting and freezing whole uterine tissue.

2019-08-29 | GSE86314 | GEO

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