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Updated: Dec 7, 2025
Author Spotlight: Advancing Therapeutic Strategies for Improving Pregnancy Rates by Analyzing Embryo-Endometrium Interactions
Published on: June 21, 2024
MiR-183 impeded embryo implantation by regulating Hbegf and Lamc1 in mouse uterus
Dingren Cao1, Jingjie Liang1, Fuqiang Feng2
1College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China.
Abstract:
Embryo implantation plays a decisive role in pregnancy. While in the process of implantation, microRNA (miRNA) is an important regulatory factor in the post transcriptional level. However, the role of many miRNAs in embryo implantation remained unknown. In this study, microRNA-183 (miR-183) was found differentially expressed in mouse uterus during implantation. In vivo treatment of miR-183 agomir in the uterine horn before implantation could eliminate the number of implantation site. The localization of miR-183 in mouse uteri gradually changed from epithelial to stromal layer in early pregnancy. Mice implantation models demonstrated that the decrease of miR-183 was mainly caused by maternal factors. Loss and gain function of miR-183 in endometrial cell lines showed that miR-183 could inhibit cell migration, invasion and apoptosis. MiR-183 could inhibit embryo implantation by binding Heparin-Binding EGF-like growth factor (Hbegf) and Laminin gamma one (Lamc1), which were key genes in embryo apposition and penetration. All these evidences indicate that miR-183 plays an important role during embryo implantation. This study provides new insights into the functions of miR-183 during embryo implantation and the development of contraceptive drugs in early pregnancy.
Insights
MicroRNA-183 (miR-183) inhibits embryo implantation by suppressing endometrial cell migration and invasion. This finding offers insights into early pregnancy regulation and potential contraceptive development.
Area of Science:
- Reproductive biology
- Molecular genetics
- Developmental biology
Background:
- Embryo implantation is critical for successful pregnancy.
- MicroRNAs (miRNAs) are key post-transcriptional regulators, but many roles in implantation remain unclear.
- microRNA-183 (miR-183) expression varies in the mouse uterus during implantation.
Purpose of the Study:
- To investigate the function of miR-183 in mouse embryo implantation.
- To elucidate the molecular mechanisms by which miR-183 affects uterine receptivity.
- To explore the potential of miR-183 as a target for early pregnancy interventions.
Main Methods:
- Differential expression analysis of miR-183 in mouse uteri during implantation.
- In vivo administration of miR-183 agomir to assess effects on implantation sites.
- Localization studies of miR-183 in the uterine tissue.
- In vitro gain and loss-of-function experiments in endometrial cell lines.
- Identification of miR-183 target genes (Hbegf, Lamc1) using molecular binding assays.
Main Results:
- miR-183 expression is altered in the uterus during embryo implantation.
- Uterine miR-183 upregulation significantly reduces implantation site numbers.
- miR-183 inhibits endometrial cell migration, invasion, and apoptosis in vitro.
- miR-183 directly targets Heparin-Binding EGF-like growth factor (Hbegf) and Laminin gamma one (Lamc1).
- Maternal factors primarily regulate the observed decrease in miR-183 during implantation.
Conclusions:
- miR-183 acts as an inhibitor of embryo implantation.
- The mechanism involves suppressing endometrial cell functions and targeting key implantation genes.
- miR-183 represents a novel target for developing early pregnancy contraceptives.
