PMID- 11923541 OWN - NLM STAT- MEDLINE DCOM- 20020422 LR - 20220812 IS - 1095-9203 (Electronic) IS - 0036-8075 (Linking) VI - 295 IP - 5564 DP - 2002 Mar 29 TI - Molecular determinants for the tissue specificity of SERMs. PG - 2465-8 AB - Selective estrogen receptor modulators (SERMs) mimic estrogen action in certain tissues while opposing it in others. The therapeutic effectiveness of SERMs such as tamoxifen and raloxifene in breast cancer depends on their antiestrogenic activity. In the uterus, however, tamoxifen is estrogenic. Here, we show that both tamoxifen and raloxifene induce the recruitment of corepressors to target gene promoters in mammary cells. In endometrial cells, tamoxifen, but not raloxifene, acts like estrogen by stimulating the recruitment of coactivators to a subset of genes. The estrogen-like activity of tamoxifen in the uterus requires a high level of steroid receptor coactivator 1 (SRC-1) expression. Thus cell type- and promoter-specific differences in coregulator recruitment determine the cellular response to SERMs. FAU - Shang, Yongfeng AU - Shang Y AD - Department of Adult Oncology, Dana-Farber Cancer Institute, 44 Binney Street, and Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA. FAU - Brown, Myles AU - Brown M LA - eng GR - CA57374/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Science JT - Science (New York, N.Y.) JID - 0404511 RN - 0 (DNA-Binding Proteins) RN - 0 (Receptors, Estrogen) RN - 0 (Repressor Proteins) RN - 0 (Selective Estrogen Receptor Modulators) RN - 0 (Transcription Factors) RN - 094ZI81Y45 (Tamoxifen) RN - 4F86W47BR6 (Raloxifene Hydrochloride) RN - 4TI98Z838E (Estradiol) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - EC 2.3.1.48 (Histone Acetyltransferases) RN - EC 2.3.1.48 (NCOA1 protein, human) RN - EC 2.3.1.48 (Nuclear Receptor Coactivator 1) RN - EC 3.5.1.98 (Histone Deacetylases) SB - IM CIN - Science. 2002 Mar 29;295(5564):2380-1. PMID: 11923515 MH - Breast/*drug effects/metabolism MH - Breast Neoplasms/genetics/metabolism MH - Cell Cycle MH - DNA-Binding Proteins/metabolism MH - Endometrial Neoplasms/genetics/metabolism MH - Endometrium/*drug effects/metabolism MH - Estradiol/pharmacology MH - Female MH - Gene Expression Regulation/drug effects MH - Gene Silencing MH - Genes, myc MH - Histone Acetyltransferases MH - Histone Deacetylases/metabolism MH - Humans MH - Insulin-Like Growth Factor I/genetics MH - Nuclear Receptor Coactivator 1 MH - Organ Specificity MH - Promoter Regions, Genetic MH - Raloxifene Hydrochloride/metabolism/*pharmacology MH - Receptors, Estrogen/chemistry/metabolism MH - Repressor Proteins/metabolism MH - Response Elements MH - Selective Estrogen Receptor Modulators/metabolism/*pharmacology MH - Tamoxifen/metabolism/*pharmacology MH - Transcription Factors/genetics/*metabolism MH - Transcription, Genetic MH - Tumor Cells, Cultured EDAT- 2002/03/30 10:00 MHDA- 2002/04/23 10:01 CRDT- 2002/03/30 10:00 PHST- 2002/03/30 10:00 [pubmed] PHST- 2002/04/23 10:01 [medline] PHST- 2002/03/30 10:00 [entrez] AID - 295/5564/2465 [pii] AID - 10.1126/science.1068537 [doi] PST - ppublish SO - Science. 2002 Mar 29;295(5564):2465-8. doi: 10.1126/science.1068537.