ArticleReproductive biology and endocrinology : RB&E2025
The influence of menstrual cycle and endometriosis on endometrial expression of epithelial-to-mesenchymal transition (EMT)-related genes.
Article in Reproductive biology and endocrinology : RB&E, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Single-cell transcriptomic landscape of the mid-secretory eutopic endometrium reveals receptivity defects in adenomyosis.Journal of translational medicine · 2026Article
- Profiling miRNA in salivary samples from subjects with endometriosis: a pilot study.Frontiers in molecular biosciences · 2026Article
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11 authors.
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Abstract
backgroundEndometriosis is a common chronic gynaecological disorder related to the presence of ectopic foci of endometrial-like tissue, mostly in the pelvic cavity. Pathogenesis of this disease may be associated with epithelial-to-mesenchymal transition (EMT), a phenomenon defined by morphological and functional changes from epithelial to mesenchymal cell phenotype. The role of EMT in the development of endometriotic lesions remains poorly understood. There is also little known about the role of EMT in the eutopic endometrium in course of the menstrual cycle. Therefore, the present study was aimed at investigating the expression of major EMT-related genes of TGF-β, ZEB, SNAIL, CDH, and miR200 families in eutopic endometrium of women with and without endometriosis in the proliferative and secretory phase of the menstrual cycle.
methodsThe study included 46 women with endometriosis and 30 control women without symptoms of the disease. Eutopic endometrial tissue samples were collected during the mid-proliferative and mid-secretory phases. Tissue localization of the tested factors was detected by immunohistochemical staining. Expression of specific RNAs was evaluated by quantitative RT-PCR. Differences between groups were determined using the Student’s t-test, Wilcoxon matched-pairs signed rank test or Mann–Whitney U-test.
resultsAll investigated factors were expressed in the eutopic endometrium, both at the protein and mRNA levels. Comparison of mRNA expression during different cycle phases has revealed a significant upregulation of SNAI2 mRNA in the secretory phase in both the endometriosis and control groups. The secretory phase was also associated with a decreased expression of CDH2 mRNA in the control group. However, a similar difference was not revealed in the endometriosis patients. There were no differences in mRNA levels of the other tested EMT-related factors between the endometriosis and control groups, regardless of the cycle phase.
conclusionsThe present study shows that SNAI2 expression is upregulated during the secretory phase of the menstrual cycle, thus suggesting its role in the physiology of the cyclic endometrial changes. However, our data argue for a limited role of EMT in eutopic endometrium in the pathogenesis of endometriosis. These findings put new light on the physiology of the endometrium and the role of EMT in the pathogenesis of endometriosis.
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