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Updated: Jun 25, 2025

Generation of a Mouse Artificial Decidualization Model with Ovariectomy for Endometrial Decidualization Research
Published on: July 27, 2022
NEK2 promotes the development of ovarian endometriosis and impairs decidualization by phosphorylating FOXO1
Mengxue Wang1,2, Fangyuan Sun1,2, Shucai Zhang3
1Department of Reproductive Medicine, Affiliated Hospital of Shandong Second Medical University, Weifang, Shandong Province, P.R. China.
Abstract:
Ovarian endometriosis is a common gynecological disease, and one of its most significant symptoms is infertility. In patients with endometriosis, defects in endometrial decidualization lead to impaired endometrial receptivity and embryo implantation, thus affecting early pregnancy and women's desire to have children. However, the mechanisms underlying the development of endometriosis and its associated defective decidualization are unclear. We find that NEK2 expression is increased in the ectopic and eutopic endometrium of patients with endometriosis. Meanwhile, NEK2 interacts with FOXO1 and phosphorylates FOXO1 at Ser184, inhibiting the stability of the FOXO1 protein. Importantly, NEK2-mediated phosphorylation of FOXO1 at Ser184 promotes cell proliferation, migration, invasion and impairs decidualization. Furthermore, INH1, an inhibitor of NEK2, inhibits the growth of ectopic lesions in mouse models of endometriosis and promotes endometrial decidualization in mouse models of artificially induced decidualization. Taken together, these findings indicate that NEK2 regulates the development of endometriosis and associated disorders of decidualization through the phosphorylation of FOXO1, providing a new therapeutic target for its treatment.
Insights
This study reveals NEK2 kinase promotes endometriosis by impairing decidualization via FOXO1 phosphorylation. Inhibiting NEK2 offers a potential therapeutic strategy for endometriosis and infertility.
Area of Science:
- Gynecology
- Cell Biology
- Reproductive Medicine
Background:
- Ovarian endometriosis is a common condition linked to infertility.
- Defective endometrial decidualization in endometriosis impairs embryo implantation and early pregnancy.
- The precise mechanisms driving endometriosis and its associated decidual defects remain largely unknown.
Purpose of the Study:
- To elucidate the molecular mechanisms underlying endometriosis development and defective decidualization.
- To investigate the role of NEK2 in endometriosis and its impact on endometrial receptivity.
- To identify potential therapeutic targets for endometriosis-associated infertility.
Main Methods:
- Assessed NEK2 expression in endometrial tissues from endometriosis patients.
- Investigated the interaction between NEK2 and FOXO1, including phosphorylation at Ser184.
- Utilized mouse models to evaluate the effects of NEK2 inhibition (using INH1) on endometriosis lesions and decidualization.
Main Results:
- NEK2 expression is elevated in both ectopic and eutopic endometrium of endometriosis patients.
- NEK2 phosphorylates FOXO1 at Ser184, reducing its stability and promoting cell proliferation, migration, and invasion.
- NEK2 inhibition by INH1 suppressed ectopic lesion growth and enhanced decidualization in mouse models.
Conclusions:
- NEK2 plays a critical role in endometriosis pathogenesis and impaired decidualization through FOXO1 phosphorylation.
- Targeting NEK2 represents a promising therapeutic avenue for treating endometriosis and improving fertility outcomes.
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