PMID- 27341831 OWN - NLM STAT- MEDLINE DCOM- 20170927 LR - 20240326 IS - 1557-3125 (Electronic) IS - 1541-7786 (Print) IS - 1541-7786 (Linking) VI - 14 IP - 9 DP - 2016 Sep TI - Cholesterol Sulfonation Enzyme, SULT2B1b, Modulates AR and Cell Growth Properties in Prostate Cancer. PG - 776-86 LID - 10.1158/1541-7786.MCR-16-0137 [doi] AB - Cholesterol accumulates in prostate lesions and has been linked to prostate cancer incidence and progression. However, how accumulated cholesterol contributes to prostate cancer development and progression is not completely understood. Cholesterol sulfate (CS), the primary sulfonation product of cholesterol sulfotransferase (SULT2B1b), accumulates in human prostate adenocarcinoma and precancerous prostatic intraepithelial neoplasia (PIN) lesions compared with normal regions of the same tissue sample. Given the enhanced accumulation of CS in these lesions, it was hypothesized that SULT2B1b-mediated production of CS provides a growth advantage to these cells. To address this, prostate cancer cells with RNAi-mediated knockdown (KD) of SULT2B1b were used to assess the impact on cell growth and survival. SULT2B1b is expressed and functional in a variety of prostate cells, and the data demonstrate that SULT2B1b KD, in LNCaP and other androgen-responsive (VCaP and C4-2) cells, results in decreased cell growth/viability and induces cell death. SULT2B1b KD also decreases androgen receptor (AR) activity and expression at mRNA and protein levels. While AR overexpression has no impact on SULT2B1b KD-mediated cell death, the addition of exogenous androgen is able to partially rescue the growth inhibition induced by SULT2B1b KD in LNCaP cells. These results suggest that SULT2B1b positively regulates the AR either through alterations in ligand availability or by interaction with critical coregulators that influence AR activity. IMPLICATIONS: These findings provide evidence that SULT2B1b is a novel regulator of AR activity and cell growth in prostate cancer and should be further investigated for therapeutic potential. Mol Cancer Res; 14(9); 776-86. (c)2016 AACR. CI - (c)2016 American Association for Cancer Research. FAU - Vickman, Renee E AU - Vickman RE AD - Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana. FAU - Crist, Scott A AU - Crist SA AD - Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana. FAU - Kerian, Kevin AU - Kerian K AD - Department of Chemistry, Purdue University, West Lafayette, Indiana. FAU - Eberlin, Livia AU - Eberlin L AD - Department of Chemistry, University of Texas at Austin, Austin, Texas. FAU - Cooks, R Graham AU - Cooks RG AD - Department of Chemistry, Purdue University, West Lafayette, Indiana. FAU - Burcham, Grant N AU - Burcham GN AD - Heeke Animal Disease Diagnostic Laboratory, Southern Indiana Purdue Agricultural Center, Dubois, Indiana. FAU - Buhman, Kimberly K AU - Buhman KK AD - Department of Nutrition Science, Purdue University, West Lafayette, Indiana. FAU - Hu, Chang-Deng AU - Hu CD AD - Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana. FAU - Mesecar, Andrew D AU - Mesecar AD AD - Department of Biological Sciences, Purdue University, West Lafayette, Indiana. FAU - Cheng, Liang AU - Cheng L AD - Department of Pathology, Indiana University School of Medicine, Indianapolis, Indiana. FAU - Ratliff, Timothy L AU - Ratliff TL AD - Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana. Purdue University Center for Cancer Research, West Lafayette, Indiana. tlratliff@purdue.edu. LA - eng GR - P30 CA023168/CA/NCI NIH HHS/United States GR - R01 CA089062/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20160624 PL - United States TA - Mol Cancer Res JT - Molecular cancer research : MCR JID - 101150042 RN - 0 (AR protein, human) RN - 0 (Cholesterol Esters) RN - 0 (Receptors, Androgen) RN - EC 2.8.2.- (Sulfotransferases) RN - EC 2.8.2.2 (SULT2B1 protein, human) RN - KU576NT9O9 (cholesteryl sulfate) SB - IM MH - Cell Death/physiology MH - Cell Line, Tumor MH - Cell Proliferation/physiology MH - Cholesterol Esters/metabolism MH - Humans MH - Male MH - Prostatic Neoplasms/enzymology/genetics/*metabolism/*pathology MH - Receptors, Androgen/*metabolism MH - Sulfotransferases/*metabolism PMC - PMC5111871 MID - NIHMS798253 COIS- There are no conflicts of interest to disclose by the authors of this manuscript. EDAT- 2016/06/28 06:00 MHDA- 2017/09/28 06:00 PMCR- 2017/09/01 CRDT- 2016/06/26 06:00 PHST- 2016/04/21 00:00 [received] PHST- 2016/06/11 00:00 [accepted] PHST- 2016/06/26 06:00 [entrez] PHST- 2016/06/28 06:00 [pubmed] PHST- 2017/09/28 06:00 [medline] PHST- 2017/09/01 00:00 [pmc-release] AID - 1541-7786.MCR-16-0137 [pii] AID - 10.1158/1541-7786.MCR-16-0137 [doi] PST - ppublish SO - Mol Cancer Res. 2016 Sep;14(9):776-86. doi: 10.1158/1541-7786.MCR-16-0137. Epub 2016 Jun 24.