Biomaterial Database

Anti-glucocorticoids block the enhancement of mouse mammary tumor virus production by 12-O-tetradecanoylphorbol-13-acetate. 1983

R Chan, and G C Buehring

Four anti-glucocorticoids, 11-deoxycortisol, deoxycorticosterone, 17 alpha-methyltestosterone and progesterone were demonstrated to antagonize the stimulation of mouse mammary tumor virus (MMTV) production by the glucocorticoid hormone dexamethasone in the cell line Mm5mt. These same anti-glucocorticoids were also able to suppress the enhancement of MMTV production by the tumor promoting phorbol ester, 12-O-tetradecanoylphorbol-13-acetate (TPA), whereas estradiol, the anti-tumor promoter trans-retinoic acid, and the calmodulin inhibitor, chlorpromazine did not. Binding competition studies indicate that TPA can compete with dexamethasone in binding to the cellular glucocorticoid receptor. These results suggest that TPA stimulates the expression of MMTV by mimicking a glucocorticoid hormone.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008324	Mammary Tumor Virus, Mouse	The type species of BETARETROVIRUS commonly latent in mice. It causes mammary adenocarcinoma in a genetically susceptible strain of mice when the appropriate hormonal influences operate.	Bittner Virus,Mammary Cancer Virus,Mouse mammary tumor virus,Mammary Tumor Viruses, Mouse
D008325	Mammary Neoplasms, Experimental	Experimentally induced mammary neoplasms in animals to provide a model for studying human BREAST NEOPLASMS.	Experimental Mammary Neoplasms,Neoplasms, Experimental Mammary,Experimental Mammary Neoplasm,Mammary Neoplasm, Experimental,Neoplasm, Experimental Mammary
D008777	Methyltestosterone	A synthetic hormone used for androgen replacement therapy and as an hormonal antineoplastic agent (ANTINEOPLASTIC AGENTS, HORMONAL).	17 beta Methyltestosterone,17 beta-Hydroxy-17-methyl-4-androsten-3-one,17 beta-Methyltestosterone,17-Epimethyltestosterone,17-alpha-Methyltestosterone,17alpha-Methyl-Testosterone,17alpha-Methyltestosterone,17beta-Hydroxy-17-methyl-4-androsten-3-one,17beta-Methyltestosterone,Android (Methyltestoterone),Android-10,Android-25,Android-5,Mesteron,Mesterone,Metandren,Methitest,Oreton,Testoviron,Testred,Virilon,17 Epimethyltestosterone,17 alpha Methyltestosterone,17 beta Hydroxy 17 methyl 4 androsten 3 one,17alpha Methyl Testosterone,17alpha Methyltestosterone,17beta Hydroxy 17 methyl 4 androsten 3 one,17beta Methyltestosterone,Android 10,Android 25,Android 5
D008809	Mice, Inbred C3H	An inbred strain of mouse that is used as a general purpose strain in a wide variety of RESEARCH areas including CANCER; INFECTIOUS DISEASES; sensorineural, and cardiovascular biology research.	Mice, C3H,Mouse, C3H,Mouse, Inbred C3H,C3H Mice,C3H Mice, Inbred,C3H Mouse,C3H Mouse, Inbred,Inbred C3H Mice,Inbred C3H Mouse
D010704	Phorbols	The parent alcohol of the tumor promoting compounds from CROTON OIL (Croton tiglium).	Tigliane,Tiglianes
D011374	Progesterone	The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the UTERUS, the MAMMARY GLANDS and the BRAIN. It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. Progesterone, converted from PREGNENOLONE, also serves as an intermediate in the biosynthesis of GONADAL STEROID HORMONES and adrenal CORTICOSTEROIDS.	Pregnenedione,Progesterone, (13 alpha,17 alpha)-(+-)-Isomer,Progesterone, (17 alpha)-Isomer,Progesterone, (9 beta,10 alpha)-Isomer
D011965	Receptors, Glucocorticoid	Cytoplasmic proteins that specifically bind glucocorticoids and mediate their cellular effects. The glucocorticoid receptor-glucocorticoid complex acts in the nucleus to induce transcription of DNA. Glucocorticoids were named for their actions on blood glucose concentration, but they have equally important effects on protein and fat metabolism. Cortisol is the most important example.	Corticoid Type II Receptor,Glucocorticoid Receptors,Glucocorticoids Receptor,Corticoid II Receptor,Corticoid Type II Receptors,Glucocorticoid Receptor,Receptors, Corticoid II,Receptors, Corticoid Type II,Receptors, Glucocorticoids,Corticoid II Receptors,Glucocorticoids Receptors,Receptor, Corticoid II,Receptor, Glucocorticoid,Receptor, Glucocorticoids
D002273	Carcinogens	Substances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included.	Carcinogen,Oncogen,Oncogens,Tumor Initiator,Tumor Initiators,Tumor Promoter,Tumor Promoters,Initiator, Tumor,Initiators, Tumor,Promoter, Tumor,Promoters, Tumor
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, Cell