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- W2092601575 abstract "The human endometrium undergoes extensive monthly regeneration in response to fluctuating levels of circulating estrogen and progesterone in premenopausal (Pre-M) women. In contrast, postmenopausal (Post-M) endometrium is thin and quiescent with low mitotic activity, similar to the Pre-M endometrial basalis layer. Clonogenic epithelial stem/progenitor (ESP) cells, likely responsible for regenerating endometrial epithelium, have been identified in Pre-M and Post-M endometrium, but their location is unknown. We undertook transcriptional profiling of highly purified epithelial cells from full-thickness Pre-M and Post-M endometrium to identify differentially regulated genes that may indicate a putative ESP cell population resides in the basalis of Pre-M and basalis-like Post-M endometrium. Of 1077 differentially expressed genes identified, the Wnt signaling pathway, important in endometrial development and stem cell regulation, was one of the main gene families detected, including 22 Wnt-associated genes. Twelve genes were validated using quantitative RT-PCR, and all were concordant with microarray data. Immunostaining showed glandular epithelial location of Wnt-regulated genes, Axin-related protein 2 and β-catenin. Axin2 localized to the nucleus of basalis Pre-M and Post-M and cytoplasm of functionalis Pre-M endometrium, suggesting that it regulates β-catenin. Comparison of our Post-M gene profile with published gene microarray datasets revealed similarities to Pre-M basalis epithelial profiles. This differential expression of multiple Wnt-associated genes in human Pre-M and Post-M endometrial epithelial cells and the similar gene profile of Post-M and Pre-M basalis epithelium suggests that a population of putative endometrial ESP may reside in the basalis of Pre-M endometrium, which may be responsible for regenerating glandular epithelium each month." @default.
- W2092601575 created "2016-06-24" @default.
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- W2092601575 date "2012-04-02" @default.
- W2092601575 modified "2023-10-18" @default.
- W2092601575 title "Differential Expression of Wnt Signaling Molecules Between Pre- and Postmenopausal Endometrial Epithelial Cells Suggests a Population of Putative Epithelial Stem/Progenitor Cells Reside in the Basalis Layer" @default.
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- W2092601575 doi "https://doi.org/10.1210/en.2011-1839" @default.
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