PMID- 10598582 OWN - NLM STAT- MEDLINE DCOM- 20000110 LR - 20131121 IS - 0888-8809 (Print) IS - 0888-8809 (Linking) VI - 13 IP - 12 DP - 1999 Dec TI - A C619Y mutation in the human androgen receptor causes inactivation and mislocalization of the receptor with concomitant sequestration of SRC-1 (steroid receptor coactivator 1) PG - 2065-75 AB - Androgen ablation therapy is a primary treatment for advanced prostate cancer, but tumors become refractive to therapy. Consequently, the role of the androgen receptors (ARs) and of mutations in the AR in prostate cancer has been a subject of much concern. In the course of analyzing tumors for mutations, we identified a somatic mutation that substitutes tyrosine for a cysteine at amino acid 619 (C619Y), which is near the cysteines that coordinate zinc in the DNA binding domain in the AR. The mutation was re-created in a wild-type expression vector and functional analyses carried out using transfection assays with androgen-responsive reporters. The mutant is transcriptionally inactive and unable to bind DNA. In response to ligand treatment, AR619Y localizes abnormally in numerous, well circumscribed predominantly nuclear aggregates in the nucleus and cytoplasm. Interestingly, these aggregates also contain the bulk of the coexpressed steroid receptor coactivator SRC-1, suggesting, in analogy to AR in spinal bulbar muscular atrophy, that this mutant may alter cellular physiology through sequestration of critical proteins. Although many inactivating mutations have been identified in androgen insensitivity syndrome patients, to our knowledge, this is the first characterization of an inactivating mutation identified in human prostate cancer. FAU - Nazareth, L V AU - Nazareth LV AD - Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA. FAU - Stenoien, D L AU - Stenoien DL FAU - Bingman, W E 3rd AU - Bingman WE 3rd FAU - James, A J AU - James AJ FAU - Wu, C AU - Wu C FAU - Zhang, Y AU - Zhang Y FAU - Edwards, D P AU - Edwards DP FAU - Mancini, M AU - Mancini M FAU - Marcelli, M AU - Marcelli M FAU - Lamb, D J AU - Lamb DJ FAU - Weigel, N L AU - Weigel NL LA - eng GR - CA-68615/CA/NCI NIH HHS/United States GR - HD-07165/HD/NICHD NIH HHS/United States GR - T32 DK-07696/DK/NIDDK NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Mol Endocrinol JT - Molecular endocrinology (Baltimore, Md.) JID - 8801431 RN - 0 (Receptors, Androgen) RN - 0 (Transcription Factors) RN - 42HK56048U (Tyrosine) RN - 9007-49-2 (DNA) 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 - K848JZ4886 (Cysteine) SB - IM EIN - Mol Endocrinol 2000 Apr;14(4):544 MH - Cell Nucleus/metabolism MH - Chromosome Mapping MH - Cysteine MH - Cytoplasm/metabolism MH - DNA/metabolism MH - HeLa Cells/metabolism/ultrastructure MH - Histone Acetyltransferases MH - Humans MH - Male MH - Middle Aged MH - *Mutation MH - Nuclear Receptor Coactivator 1 MH - Prostatic Neoplasms/*genetics MH - Receptors, Androgen/analysis/*genetics/metabolism MH - Response Elements MH - Transcription Factors/*metabolism MH - Transfection MH - Tyrosine MH - X Chromosome EDAT- 1999/12/22 09:00 MHDA- 2001/03/28 10:01 CRDT- 1999/12/22 09:00 PHST- 1999/12/22 09:00 [pubmed] PHST- 2001/03/28 10:01 [medline] PHST- 1999/12/22 09:00 [entrez] AID - 10.1210/mend.13.12.0382 [doi] PST - ppublish SO - Mol Endocrinol. 1999 Dec;13(12):2065-75. doi: 10.1210/mend.13.12.0382.