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Wang S, Chen X, Guo S, Zhou F, Zhang X, Lu C, Yang X, Wang Q, He B, Wang J, Wang H, Xu X. CXCR4, regulated by HIF1A, promotes endometrial breakdown via CD45 + leukocyte recruitment in a mouse model of menstruation. Reprod Biol 2023; 23:100785. [PMID: 37392490 DOI: 10.1016/j.repbio.2023.100785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 05/31/2023] [Accepted: 06/13/2023] [Indexed: 07/03/2023]
Abstract
Menstruation is a specific physiological phenomenon in female humans that is regulated by complex molecular mechanisms. However, the molecular network involved in menstruation remains incompletely understood. Previous studies have suggested that C-X-C chemokine receptor 4 (CXCR4) is involved; however, how CXCR4 participates in endometrial breakdown remains unclear, as do its regulatory mechanisms. This study aimed to clarify the role of CXCR4 in endometrial breakdown and its regulation by hypoxia-inducible factor-1 alpha (HIF1A). We first confirmed that CXCR4 and HIF1A protein levels were significantly increased during the menstrual phase compared with the late secretory phase using immunohistochemistry. In our mouse model of menstruation, real-time PCR, western blotting, and immunohistochemistry showed that CXCR4 mRNA and protein expression levels gradually increased from 0 to 24 h after progesterone withdrawal during endometrial breakdown. HIF1A mRNA and HIF1A nuclear protein levels significantly increased and peaked at 12 h after progesterone withdrawal. Endometrial breakdown was significantly suppressed by the CXCR4 inhibitor AMD3100 and the HIF1A inhibitor 2-methoxyestradiol in our mouse model, and HIF1A inhibition also suppressed CXCR4 mRNA and protein expression. In vitro studies using human decidual stromal cells showed that CXCR4 and HIF1A mRNA expression levels were increased by progesterone withdrawal and that HIF1A knockdown significantly suppressed the elevation in CXCR4 mRNA expression. CD45+ leukocyte recruitment during endometrial breakdown was suppressed by both AMD3100 and 2-methoxyestradiol in our mouse model. Taken together, our preliminary findings suggest that endometrial CXCR4 expression is regulated by HIF1A during menstruation and may promote endometrial breakdown, potentially via leukocyte recruitment.
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Affiliation(s)
- Shufang Wang
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province 453003, People's Republic of China
| | - Xihua Chen
- Reproductive Physiology Laboratory, National Research Institute for Family Planning, Beijing 100081, People's Republic of China
| | - Shige Guo
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province 453003, People's Republic of China; Graduate School of Peking Union Medical College, Beijing 100730, People's Republic of China
| | - Fang Zhou
- Male Clinical Laboratory, National Research Institute for Family Planning, Beijing 100081, People's Republic of China
| | - Xin Zhang
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province 453003, People's Republic of China; Graduate School of Peking Union Medical College, Beijing 100730, People's Republic of China
| | - Cong Lu
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province 453003, People's Republic of China; Graduate School of Peking Union Medical College, Beijing 100730, People's Republic of China
| | - Xuqing Yang
- Department of Cell Biology, Zunyi Medical University, Zunyi 563099, People's Republic of China
| | - Qianxing Wang
- Department of Cell Biology, Zunyi Medical University, Zunyi 563099, People's Republic of China
| | - Bin He
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province 453003, People's Republic of China
| | - Jiedong Wang
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province 453003, People's Republic of China
| | - Hanbi Wang
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, People's Republic of China.
| | - Xiangbo Xu
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province 453003, People's Republic of China.
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