Downregulated circular RNA hsa_circ_0067301 regulates epithelial-mesenchymal transition in endometriosis via the miR-141/Notch signaling pathway

Mengmeng Zhang, Sixue Wang, Lu Tang, Xi Wang, Tingting Zhang, Xiaomeng Xia, Xiaoling Fang
Biochemical and biophysical research communications · 2019 · vol. 514(1) , pp. 71–77 · doi:10.1016/j.bbrc.2019.04.109 · PMID:31023528 · W2942176295
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Reduced hsa_circ_0067301 expression promotes endometriosis epithelial-mesenchymal transition via the miR-141/Notch signaling pathway.

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Abstract

Endometriosis is a common gynecologic disorder with enigmatic etiopathogenesis and is characterized by tumor-like biological behaviors. Epithelial-mesenchymal transition (EMT) has been recognized as a core mechanism of endometriosis. Recently, circular RNAs (circRNAs) have attracted considerable attention because they play an important role in the progression of cancer. However, little is known about the function of circRNAs in endometriosis. This study is intended to investigate the involvement of circRNAs and microRNAs in the process of EMT in ovarian endometriosis in vitro. We found that relative RNA levels of hsa_circ_0067301 and miR-141-5p were significantly reduced in ectopic endometrium when compared to control endometrium. Hsa_circ_0067301 knockdown could promote the proliferation and migration in Ishikawa and End1/E6E7 cells, concomitant with increased the relative protein expression against Notch-1, Hes-1, N-cadherin, and vimentin but reduced expression of E-cadherin. After co-transfection with the miR-141-5p inhibitor, the miR-141-5p that competes for binding to hsa_circ_0067301 was reduced, reversed EMT and partially restored the expression of Notch-1 and Hes-1. Results demonstrate the hsa_circ_0067301/miR-141-5p/Notch-1 axis plays an important regulatory role in the process of EMT in endometriosis. The study highlighted the importance of circRNAs in ovarian endometriosis and provided unique insights into the molecular basis concerning the pathogenesis of endometriosis.

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Condition tags

mesh:D004715endometriosis

MeSH descriptors

Endometriosis Epithelial-Mesenchymal Transition MicroRNAs Receptors, Notch RNA, Circular Adult Cell Line Down-Regulation Endometriosis Endometriosis Endometriosis Female Gene Expression Regulation Humans MicroRNAs Receptors, Notch Receptors, Notch RNA, Circular Signal Transduction

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