Therapeutic doses of doxorubicin induce premature senescence of human mesenchymal stem cells derived from menstrual blood, bone marrow and adipose tissue.

Therapeutic doses of doxorubicin induce premature senescence of human mesenchymal stem cells derived from menstrual blood, bone marrow and adipose tissue. Int J Hematol. 2017 Oct 11;: Authors: Kozhukharova I, Zemelko V, Kovaleva Z, Alekseenko L, Lyublinskaya O, Nikolsky N Abstract Doxorubicin (Dox) is an effective anticancer drug with known activity against a wide spectrum of malignancies, hematologic malignancies in particular. Despite extensive clinical use, the mechanisms of its side effects and negative action on normal cells remain under study. The aim of this study was to investigate the effect of Dox on cultured human mesenchymal stem cells (MSCs) derived from menstrual blood (eMSCs), bone marrow (BMSCs) and adipose tissue (AMSCs). Dox treatment in high doses decreased the survival of MSCs in a dose-dependent manner. Clinically relevant low doses of Dox induced premature senescence of eMSCs, BMSCs and AMSCs, but did not kill the cells. Dox caused cell cycle arrest and formation of γ-H2AX foci, and increased the number of SA-β-gal-positive cells. BMSCs entered premature senescence earlier than other MSCs. It has been reported that neural-like cells differentiated from MSCs of various origins are more sensitive to Dox than their parent cells. Dox-treated differentiated MSCs exhibited lower viability and earlier generation of γ-H2AX foci. Dox administration inhibited secretory activity in neural-like cells. These findings sugg...
Source: International Journal of Hematology - Category: Hematology Authors: Tags: Int J Hematol Source Type: research