Glucocorticoid regulation of prolactin receptors on mammary cells in culture.
Mouse mammary epithelial cultures were examined for the ability to specifically bind [125I]PRL after cultivation on floating collagen gels. Corticosterone, particularly hydrocortisone, were effective in increasing the ability of mouse mammary cells to bind [125I]PRL. The absence of a glucocorticoid in the medium resulted in a loss of PRL binding during the 3 days in culture. 17 beta-Estradiol, progesterone, and aldosterone at equal molar concentration had no or only a small effect in increasing [125I]PRL binding.
D000450:Aldosterone / Q000494:pharmacology; D000818:Animals; D002478:Cells, Cultured; D003345:Corticosterone / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D006854:Hydrocortisone / Q000494:pharmacology*; D051379:Mice; D008815:Mice, Inbred Strains; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology; D011388:Prolactin / Q000378:metabolism*; D011956:Receptors, Cell Surface / Q000378:metabolism*
D011956:Receptors, Cell Surface; D000450:Aldosterone; D011374:Progesterone; D004958:Estradiol; D011388:Prolactin; D003345:Corticosterone; D006854:Hydrocortisone