Regulated expression of cadherin-6 and cadherin-11 in the glandular epithelial and stromal cells of the human endometrium

Spiro Getsios, George T.C. Chen, Mary D. Stephenson, Pierre Leclerc, Orest W. Blaschuk, Colin D. MacCalman
In: Developmental Dynamics · 1998 · vol. 211(3) , pp. 238–247 · doi:10.1002/(sici)1097-0177(199803)211:3<238::aid-aja5>3.0.co;2-i · PMID:9520111 · W1990323563
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Cadherin-6 and cadherin-11 expression levels vary in human endometrial glandular epithelial and stromal cells throughout the menstrual cycle, with progesterone differentially regulating their expression in stromal cells.

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Abstract

The cadherins are key morphoregulators. A switch in the cadherin subtype(s) expressed by a population of cells has been associated with the differentiation and formation of tissues during embryonic development. To date, the role(s) of the cadherins in the highly regulated remodeling processes which occur in the human endometrium in preparation for the implanting embryo remain poorly characterized. Here we report that two atypical cadherins, known as cadherin-6 and cadherin-11, are spatiotemporally expressed in the human endometrium during the menstrual cycle. Cadherin-6 levels are high in both the glandular epithelium and stroma of the endometrium during the follicular phase and decline as the cycle enters the luteal phase. The down-regulation of cadherin-6 in the glandular epithelium during the luteal phase does not effect the levels of cadherin-11 in this cell type. In contrast, the loss of cadherin-6 expression in endometrial stroma cells is concomitant with an increase in the levels of cadherin-11. Collectively, these observations suggest that multiple factors regulate the expression of these two endometrial cadherins. As a first step in identifying these factors, we examined the effects of progesterone on cadherin-6 and cadherin-11 expression in isolated endometrial stromal cells. Progesterone was capable of differentially regulating the expression of these two stromal cell adhesion molecules. These findings lend further support to our hypothesis that steroids are key regulators of cadherin expression in mammalian tissues.

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