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Geng T, Sun Y, Cheng L, Cao Y, Zhang M, Hong Z, Ma L, Zhang Y. Downregulation of LHCGR Attenuates COX-2 Expression and Induces Luteinized Unruptured Follicle Syndrome in Endometriosis. Front Endocrinol (Lausanne) 2022; 13:853563. [PMID: 35600595 PMCID: PMC9114297 DOI: 10.3389/fendo.2022.853563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
An association between endometriosis and luteinized unruptured follicle syndrome (LUFs) has long been identified. Although inactivating mutation of luteinizing hormone/choriogonadotropin receptor (LHGCR) results in LUFs, whether LHCGR contributes to promoting LUFs in endometriosis remains elusive. To investigate the effect of LHCGR signaling in the development of endometriosis-associated LUFs and dissect the underlying mechanism in vivo mouse endometriosis model was established to measure the effect on ovarian folliculogenesis. In vitro cultures of primary human GCs collected from patients undergoing in vitro fertilization were performed and treated with human chorionic gonadotropin (hCG), dibutyryl cyclic-AMP (db-cAMP), LHCGR or CCAAT/enhancer binding protein-α (C/EBPα) small interfering RNA to identify the potential mechanisms. KGN cell line was used to investigate the mechanistic features of transcriptional regulation. Results showed an increased incidence of LUFs was observed in mice with endometriosis. The expression of LHCGR was decreased in the GCs of endometriosis mice. In in vitro cell models, LHCGR signaling increased the expression of C/EBPα and cyclooxygenase-2(COX-2), while inhibiting C/EBPα mitigated the induced COX-2 expression. Mechanically, C/EBPα bounded to the promoter region of COX-2 and increased the transcriptional activity under the stimulation of hCG or db-cAMP. Taken together, this study demonstrated that the LHCGR signaling was reduced in GCs of endometriosis and resulted in a decrease in gonadotropin-induced COX-2 expression. Our study might provide new insights into the dysfunction of GCs in endometriosis.
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Affiliation(s)
- Ting Geng
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yifan Sun
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Lin Cheng
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yuming Cao
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ming Zhang
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
| | - Zhidan Hong
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
| | - Ling Ma
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
| | - Yuanzhen Zhang
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
- *Correspondence: Yuanzhen Zhang,
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Oxidative stress and oocyte quality: ethiopathogenic mechanisms of minimal/mild endometriosis-related infertility. Cell Tissue Res 2015; 364:1-7. [DOI: 10.1007/s00441-015-2339-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 11/23/2015] [Indexed: 11/29/2022]
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