Abstract
Objective: To study the potential of differentiation of menstrual blood-derived mesenchymal stem cells (MenSC) into endometrial epithelial cells (EEC) in vitro. Methods: Endometrial stromal cells (ESC) and MenSC were cultured and identified by certain methods.MenSC were co-cultured with ESC, added 10 ng/ml TGF-β1, 10 ng/ml EGF, 10 ng/ml PDGF-BB and 1×10(-7) mol/L 17-β-estradiol.The expression of cytokeratin, which was marker of EEC, was tested by immunofluorescence in differentiated MenSC. Results: MenSC proliferated quickly in vitro, and showed fusiform shape and clear structure within 10 generations.The expression rate of superficial markers of MenSC, CD44, CD90, CD73, and CD29, were 98.4%, 90.77%, 94.75% and 97.01% respectively.The expression of vimentin, which was stromal marker, was positive in cultured ESC (P3). After co-cultured with ESC for 3 weeks, MenSC morphology changed from fibroblast-like cells into epithelial-like cells.Immunofluorescence assay showed that the differentiated MenSC expressed cytokeratin. Conclusion: Under the condition of co-culture with ESC, MenSC has the ability to differentiate into endometrial epithelial cells. Cell growth factor and estrogen play the important roles in this process.
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