PMID- 8240982 OWN - NLM STAT- MEDLINE DCOM- 19940106 LR - 20190830 IS - 0960-0760 (Print) IS - 0960-0760 (Linking) VI - 46 IP - 5 DP - 1993 Nov TI - Estrogen and androgen receptor mediated stimulation and inhibition of proliferation by androst-5-ene-3 beta,17 beta-diol in human mammary cancer cells. PG - 597-603 AB - Androst-5-ene-3 beta,17 beta-diol (ADIOL) and 5 alpha-androstane-3 beta,17 beta-diol (5 alpha A), which are metabolites of dehydroepiandrosterone and dihydrotestosterone, are known to have estrogenic properties. This study reevaluates the estrogenic effects of ADIOL and 5 alpha A in MCF-7 cells and demonstrates additionally androgen-like inhibitory properties of these compounds in human hormone-dependent mammary cancer cells. ADIOL and 5 alpha A (10-100 nM) stimulate the proliferation of estrogen-sensitive MCF-7 cells. Binding assays with the estrogen receptor and inhibition of stimulation with the antiestrogen tamoxifen support the involvement of the estrogen receptor. On the other hand, the mammary cancer cell line MFM-223 is strongly inhibited by ADIOL and 5 alpha A in the same concentration range. This cell line is androgen receptor positive and is inhibited by androgens, but unresponsive to estrogens and progestins. The inhibitory effects of ADIOL and 5 alpha A in MFM-223 cells are mediated by the androgen receptor as demonstrated by receptor studies and competition experiments with hormone antagonists. ADIOL and 5 alpha A thus possess estrogen- and androgen-like properties and can stimulate or inhibit proliferation of human mammary cancer cells. The reactions of mammary cancer cells to these steroids depend on the receptor content and the growth properties of the individual cell line. FAU - Hackenberg, R AU - Hackenberg R AD - Zentrum fur Frauenheilkunde und Geburtshilfe, Philipps Universitat, Marburg, Germany. FAU - Turgetto, I AU - Turgetto I FAU - Filmer, A AU - Filmer A FAU - Schulz, K D AU - Schulz KD LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Steroid Biochem Mol Biol JT - The Journal of steroid biochemistry and molecular biology JID - 9015483 RN - 0 (Receptors, Androgen) RN - 0 (Receptors, Estrogen) RN - 25126-76-5 (Androstane-3,17-diol) RN - 2C323EGI97 (Metribolone) RN - 95PS51EMXY (Androstenediol) SB - IM MH - Androstane-3,17-diol/pharmacology MH - Androstenediol/*pharmacology MH - Binding, Competitive MH - Breast Neoplasms/*metabolism MH - Cell Division/drug effects MH - Female MH - Humans MH - Metribolone/metabolism MH - Receptors, Androgen/*metabolism MH - Receptors, Estrogen/*metabolism MH - Tumor Cells, Cultured EDAT- 1993/11/01 00:00 MHDA- 1993/11/01 00:01 CRDT- 1993/11/01 00:00 PHST- 1993/11/01 00:00 [pubmed] PHST- 1993/11/01 00:01 [medline] PHST- 1993/11/01 00:00 [entrez] AID - 10.1016/0960-0760(93)90187-2 [doi] PST - ppublish SO - J Steroid Biochem Mol Biol. 1993 Nov;46(5):597-603. doi: 10.1016/0960-0760(93)90187-2.