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- W2109133691 abstract "Abstract FSH is produced by the pituitary gonadotrope to regulate gametogenesis. Steroid hormones, including androgens, progestins, and glucocorticoids, have all been shown to stimulate expression of the FSHβ subunit in primary pituitary cells and rodent models. Understanding the molecular mechanisms of steroid induction of FSHβ has been difficult due to the heterogeneity of the anterior pituitary. Immortalized LβT2 cells are a model of a mature gonadotrope cell and express the endogenous steroid receptor for each of the three hormones. Transient transfection of each receptor, along with ligand treatment, stimulates the mouse FSHβ promoter, but induction is severely diminished using receptors that lack the ability to bind DNA, indicating that induction is likely through direct DNA binding. All three steroid hormones act within the first 500 bp of the FSHβ promoter where six putative hormone response elements exist. The −381 site is critical for FSHβ induction by all three steroid hormones, whereas the −197 and −139 sites contribute to maximal induction. Interestingly, the −273 and −230 sites are also necessary for androgen and progestin induction of FSHβ, but not for glucocorticoid induction. Additionally, we find that all three receptors bind the endogenous FSHβ promoter, in vivo, and specifically bind the −381 site in vitro, suggesting that the binding of the receptors to this element is critical for the induction of FSHβ by these 3-keto steroid hormones. Our data indicate that androgens, glucocorticoids, and progestins act via their receptors to directly activate FSHβ gene expression in the pituitary gonadotrope." @default.
- W2109133691 created "2016-06-24" @default.
- W2109133691 creator A5014316757 @default.
- W2109133691 creator A5042178162 @default.
- W2109133691 creator A5050968979 @default.
- W2109133691 date "2006-09-01" @default.
- W2109133691 modified "2023-10-13" @default.
- W2109133691 title "Androgens, Progestins, and Glucocorticoids Induce Follicle-Stimulating Hormone β-Subunit Gene Expression at the Level of the Gonadotrope" @default.
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- W2109133691 doi "https://doi.org/10.1210/me.2005-0316" @default.
- W2109133691 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2941439" @default.
- W2109133691 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16675544" @default.
- W2109133691 hasPublicationYear "2006" @default.