PMID- 28637297 OWN - NLM STAT- MEDLINE DCOM- 20171012 LR - 20181113 IS - 1945-7197 (Electronic) IS - 0021-972X (Print) IS - 0021-972X (Linking) VI - 102 IP - 9 DP - 2017 Sep 1 TI - A Role for Progesterone-Regulated sFRP4 Expression in Uterine Leiomyomas. PG - 3316-3326 LID - 10.1210/jc.2016-4014 [doi] AB - CONTEXT: Despite progesterone's key role in uterine smooth muscle tumorigenesis, the mechanisms by which it promotes the growth of uterine leiomyomas remain poorly understood. OBJECTIVE: The aim of this study was to identify gene products mediating the effects of progesterone in uterine leiomyomas. DESIGN: Gene expression profiling was used to identify putative progesterone-regulated genes differentially expressed in uterine leiomyomas, which were then studied in vitro. METHODS: Gene expression was comprehensively profiled with the Illumina WG BeadChip (version 2.6) and analyzed with a bioinformatic algorithm that integrates known protein-protein interactions. Genomic binding sites for progesterone receptor (PR) were interrogated by chromatin immunoprecipitation-quantitative polymerase chain reaction (ChIP-qPCR). Small interfering RNA was used to study gene function in primary cell lines. RESULTS: Our analyses identified secreted Frizzled-related protein 4 (sFRP4) as a key gene product functionally linked to PR activation whose expression was 2.6 times higher in leiomyomas than myometrium (n = 26, P < 0.01) and 2.5 times higher during the proliferative phase of the menstrual cycle (n = 26, P < 0.01). Direct binding between PR and sFRP4 promoter was observed by ChIP-qPCR. Robust overexpression of sFRP4 was also observed in primary cultures derived from leiomyoma. Progesterone preferentially inhibited sFRP4 expression and secretion in leiomyoma cultures in a dose-dependent manner sensitized by estradiol. Knockdown of sFRP4 inhibited proliferation and apoptosis in primary cultures of both myometrium and leiomyoma. CONCLUSIONS: Overexpression of sFRP4 is a robust, progesterone-regulated feature of leiomyomas that increases smooth muscle proliferation. More work is needed to elucidate how progesterone's ability to modulate sFRP4 expression contributes to uterine smooth muscle tumorigenesis. CI - Copyright (c) 2017 Endocrine Society FAU - Delaney, Meaghan A AU - Delaney MA AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. FAU - Wan, Ying-Wooi AU - Wan YW AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. AD - Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030. FAU - Kim, Gyoung-Eun AU - Kim GE AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. FAU - Creighton, Chad J AU - Creighton CJ AD - Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030. FAU - Taylor, Margaret G AU - Taylor MG AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. FAU - Masand, Ramya AU - Masand R AD - Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas 77030. FAU - Park, Andrew AU - Park A AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. FAU - Valdes, Cecilia AU - Valdes C AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. FAU - Gibbons, William AU - Gibbons W AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. FAU - Liu, Zhandong AU - Liu Z AD - Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030. AD - Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030. FAU - Anderson, Matthew L AU - Anderson ML AD - Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas 77030. AD - Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030. AD - Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas 77030. LA - eng GR - R01 GM120033/GM/NIGMS 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. PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 RN - 0 (Proto-Oncogene Proteins) RN - 0 (RNA, Messenger) RN - 0 (SFRP4 protein, human) RN - 4G7DS2Q64Y (Progesterone) SB - IM MH - Biopsy, Needle MH - Blotting, Western MH - Cell Proliferation/genetics MH - Disease Progression MH - Female MH - Gene Expression Profiling MH - *Gene Expression Regulation, Neoplastic MH - Humans MH - Immunohistochemistry MH - Leiomyoma/*genetics/pathology MH - Myocytes, Smooth Muscle/physiology MH - Progesterone/*metabolism MH - Promoter Regions, Genetic/genetics MH - Proto-Oncogene Proteins/*genetics MH - RNA, Messenger/metabolism MH - Real-Time Polymerase Chain Reaction/methods MH - Role MH - Uterine Neoplasms/*genetics/pathology PMC - PMC5587057 EDAT- 2017/06/24 06:00 MHDA- 2017/10/13 06:00 PMCR- 2018/09/01 CRDT- 2017/06/23 06:00 PHST- 2016/12/22 00:00 [received] PHST- 2017/06/09 00:00 [accepted] PHST- 2017/06/24 06:00 [pubmed] PHST- 2017/10/13 06:00 [medline] PHST- 2017/06/23 06:00 [entrez] PHST- 2018/09/01 00:00 [pmc-release] AID - 3868126 [pii] AID - jcem_20164014 [pii] AID - 10.1210/jc.2016-4014 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 2017 Sep 1;102(9):3316-3326. doi: 10.1210/jc.2016-4014.