ArticleFrontiers in reproductive health2025
The role and underlying mechanisms of Qi Gong Wan in enhancing the endometrial receptivity of a rat model with polycystic ovary syndrome.
Article in Frontiers in reproductive health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.
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Abstract
Background: Qi Gong Wan (QGW) is a herbal formula which is used for treating infertility associated with polycystic ovary syndrome (PCOS). However, the mechanism of action remains unclear. This study aimed to investigate whether QGW enhances endometrial receptivity in a PCOS with insulin resistance (PCOS-IR) rat model and to explore the underlying molecular mechanisms and primary active constituents. Materials and methods: A PCOS with insulin resistance (IR) rat model was established using dehydroepiandrosterone (DHEA) and a high-fat diet. Rats were treated with QGW or metformin as a positive control. Network pharmacology and molecular docking were used to identify potential drug-disease targets and active components. Endometrial receptivity was evaluated by assessing key markers-including HOXA10, HOXA11, ITGβ3, LIF, GLUT4, and IGFBP1-using histological examination, scanning electron microscopy (to observe pinopode formation), quantitative real-time PCR, Western blot, and immunohistochemistry. SiRNA-mediated knockdown of Hoxa11 was employed to validate its functional role. Network pharmacology and molecular docking techniques were applied to identify potential drug-disease targets and active constituents. Results: QGW significantly restored regular estrous cycles, reduced testosterone, fasting insulin, and HOMA-IR levels, and improved ovarian morphology in PCOS-IR rats. Network pharmacological analysis identifies HOXA10, HOXA11, and IGFBP1 as core targets. Molecular docking studies demonstrate that wogonin exhibits strong binding affinity with these targets. QGW upregulates the expression of endometrial receptivity markers (HOXA10, HOXA11, ITGβ3, LIF, GLUT4, IGF1) while downregulating IGFBP1 and IL-6 levels. Additionally, Qigui Wenjing Formula promotes pinopode formation and normalizes estrogen/progesterone receptor expression. When Hoxa11 gene expression is suppressed, this formula can reverse the consequent decline in receptivity-related gene expression. Conclusions: QGW is capable of enhancing the expression of genes related to endometrial receptivity in PCOS model rats and increasing the number of pinopodes, thereby improving the endometrial receptivity in PCOS rats. The results suggest that QGW may improve endometrial receptivity potentially through upregulation of Hoxa11 accompanied by increased Itgβ3 and decreased Igfbp1. However, whether Hoxa11 directly binds to the promoter regions of relevant genes requires further validation. Network pharmacology and molecular docking suggest that wogonin may be an active constituent with considerable potential, though its specific contribution requires further validation through in vivo and in vitro functional experiments.
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