Silencing of Forkhead Box M1 Reverses Transforming Growth Factor-β1-Induced Invasion and Epithelial-Mesenchymal Transition of Endometriotic Epithelial Cells

Jingjing Zhang, Zhiming Xu, Hongying Dai, Jing Zhao, Tingting Liu, Guiping Zhang
Gynecologic and obstetric investigation · 2019 · vol. 84(5) , pp. 485–494 · doi:10.1159/000499625 · PMID:31039568 · W2943129311
article OA: closed CC0 RETRACTED ⤵ 5 in-corpus citations
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⚙ AI-generated summary by claude@2026-06, 2026-06-07 ⓘ

This study found that increased Forkhead box M1 expression in endometriotic tissues correlates with invasion and epithelial-mesenchymal transition, and silencing FoxM1 partially reversed these effects induced by TGF-β1.

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Abstract

AIM: The aim of this study was to investigate the expression of Forkhead box M1 (FoxM1) in endometriosis and determine FoxM1's possible effects on endometriotic epithelial cells (EECs) invasion and epithelial-mesenchymal transition (EMT). METHODS: The expression of FoxM1 and E-cadherin in endometrium and ectopic tissues was analyzed by immunohistochemistry. The transforming growth factor-β1 (TGF-β1) was added to induce EMT of EECs, which were purified from ectopic tissues. The Short hairpin RNA (ShRNA) intervention technique was used to silence FoxM1. The morphological changes of EECs were observed by microscope. The invasion ability of EECs was determined by transwell invasion assay. The expression of FoxM1 and EMT-related gene (E-cadherin, N-cadherin, vimentin, and Snail) in EECs was detected by quantitative reverse transcription-polymerase chain reaction and western blot. RESULTS: FoxM1 expression was significantly increased, while E-cadherin expression was significantly decreased in ectopic tissues than that in endometrium tissues. After TGF-β1 treatment, EECs showed a transformation from an epithelial sheet-like structure to a mesenchymal fibroblastic spindle shape; EECs invasion ability was enhanced; the level changes of EMT-related molecule also indicated an EMT phenotype of EECs. After FoxM1-shRNA intervention, TGF-β1-induced changes of EECs in morphology, invasion ability and EMT-related molecule expressions were partially reversed. CONCLUSIONS: Silencing of FoxM1 could reverse TGF-β1-induced invasion and EMT of EECs.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Epithelial-Mesenchymal Transition Forkhead Box Protein M1 Gene Silencing Transforming Growth Factor beta1 Antigens, CD Antigens, CD Cadherins Cadherins Cell Line, Tumor Endometriosis Endometrium Endometrium Epithelial Cells Epithelial Cells Epithelial-Mesenchymal Transition Female Forkhead Box Protein M1 Gene Silencing Humans

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References (33)

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