Abstract
Production of microvesicles in culture of human umbilical cord multipotent mesenchymal stromal cells was studied and comparative analysis of the expression of some surface molecules (clusters of differentiation, CD) was performed. It was found that the mesenchymal stromal cells produce microvesicles in the amount sufficient for their detection by flow cytometry. Parallel analysis of the phenotypes of maternal mesenchymal stromal cells and secreted microvesicles revealed identical expression of surface molecules CD13, CD29, CD44, CD54, CD71, CD73, CD90, CD105, CD106, and HLA-I. The concentration of microvesicles in the conditioned medium was 17.9±4.6×106/ml; i.e. one cell produced ~40-50 (44.7±11.5) microvesicles over 2 days in culture.
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