Analysis of Expression of Genes Involved in Immune Response Modulation in Silent Multipotent Mesenchymal Stromal Cells

The expression of some genes modulating the immune response was studied in multipotent mesenchymal stromal cells (MMSC) from the bone marrow of a healthy donor. Non-activated MMSC expressed IL-6 and IL-10, complement H factor, macrophage growth factor, prostaglandin E2 synthase, and indoleamine-2,3-dioxygenase. The expression of all these genes was higher in female MMSC. A close inverse relationship between IL-6 expression in MMSC and male donor age, close relationship between body weight index and fibroblast CFU concentration in female donor bone marrow and between indoleamine-2,3-dioxygenase and macrophage growth factor in MMSC from these donors were detected. The expression of the analyzed genes was higher in MMSC of donors who had no antibodies to cytomegalovirus, herpes simplex virus, and Epstein-Barr virus in the blood. The results demonstrate the MMSC regulation of immune reactions by MMSC at the cell and organism levels.