PMID- 31753699 OWN - NLM STAT- MEDLINE DCOM- 20210122 LR - 20210122 IS - 1464-3405 (Electronic) IS - 0960-894X (Linking) VI - 30 IP - 2 DP - 2020 Jan 15 TI - Formation of 5alpha-dihydrotestosterone from 5alpha-androstane-3alpha,17beta-diol in prostate cancer LAPC-4 cells - Identifying inhibitors of non-classical pathways producing the most potent androgen. PG - 126783 LID - S0960-894X(19)30748-6 [pii] LID - 10.1016/j.bmcl.2019.126783 [doi] AB - 5alpha-Dihydrotestosterone (5alpha-DHT) possesses a great affinity for the androgen receptor (AR), and its binding to AR promotes the proliferation of prostate cancer (PC) cells in androgen-dependent PC. Primarily synthesized from testosterone (T) in testis, 5alpha-DHT could also be produced from 5alpha-androstane-3alpha,17beta-diol (3alpha-diol), an almost inactive androgen, following non-classical pathways. We reported the chemical synthesis of non-commercially available [4-(14)C]-3alpha-diol from [4-(14)C]-T, and the development of a biological assay to identify inhibitors of the 5alpha-DHT formation from radiolabeled 3alpha-diol in LAPC-4 cell PC model. We measured the inhibitory potency of 5alpha-androstane derivatives against the formation of 5alpha-DHT, and inhibition curves were obtained for the most potent compounds (IC(50) = 1.2-14.1 muM). The most potent inhibitor 25 (IC(50) = 1.2 muM) possesses a 4-(4-CF(3)-3-CH(3)O-benzyl)piperazinyl methyl side chain at C3beta and 17beta-OH/17alpha-CCH functionalities at C17 of a 5alpha-androstane core. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Boutin, Sophie AU - Boutin S AD - Laboratory of Medicinal Chemistry, Endocrinology and Nephrology Unit, CHU de Quebec - Research Center, Quebec, QC, Canada; Department of Molecular Medicine, Faculty of Medicine, Universite Laval, Quebec, QC, Canada. FAU - Roy, Jenny AU - Roy J AD - Laboratory of Medicinal Chemistry, Endocrinology and Nephrology Unit, CHU de Quebec - Research Center, Quebec, QC, Canada. FAU - Maltais, Rene AU - Maltais R AD - Laboratory of Medicinal Chemistry, Endocrinology and Nephrology Unit, CHU de Quebec - Research Center, Quebec, QC, Canada. FAU - Poirier, Donald AU - Poirier D AD - Laboratory of Medicinal Chemistry, Endocrinology and Nephrology Unit, CHU de Quebec - Research Center, Quebec, QC, Canada; Department of Molecular Medicine, Faculty of Medicine, Universite Laval, Quebec, QC, Canada. Electronic address: Donald.poirier@crchul.ulaval.ca. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191109 PL - England TA - Bioorg Med Chem Lett JT - Bioorganic & medicinal chemistry letters JID - 9107377 RN - 0 (Androgens) RN - 0 (Receptors, Androgen) RN - 08J2K08A3Y (Dihydrotestosterone) RN - 25126-76-5 (Androstane-3,17-diol) SB - IM MH - Androgens/*metabolism MH - Androstane-3,17-diol/chemistry/*metabolism MH - Cell Line, Tumor MH - Dihydrotestosterone/chemistry/*metabolism MH - Humans MH - Male MH - Prostatic Neoplasms/metabolism/pathology MH - Receptors, Androgen/chemistry/metabolism MH - Structure-Activity Relationship OTO - NOTNLM OT - Androgen OT - Androstane derivative OT - LAPC-4 cells OT - Prostate cancer OT - Steroid EDAT- 2019/11/23 06:00 MHDA- 2021/01/23 06:00 CRDT- 2019/11/23 06:00 PHST- 2019/09/11 00:00 [received] PHST- 2019/10/21 00:00 [revised] PHST- 2019/10/24 00:00 [accepted] PHST- 2019/11/23 06:00 [pubmed] PHST- 2021/01/23 06:00 [medline] PHST- 2019/11/23 06:00 [entrez] AID - S0960-894X(19)30748-6 [pii] AID - 10.1016/j.bmcl.2019.126783 [doi] PST - ppublish SO - Bioorg Med Chem Lett. 2020 Jan 15;30(2):126783. doi: 10.1016/j.bmcl.2019.126783. Epub 2019 Nov 9.