The differentiation of hematopoietic stem cells was reprogrammed in advanced tumor-bearing mice

Abstract

Background: Hematopoiesis and the differentiation of HSCs have been proved to not only play important roles in cancer progression but also be changed or reprogrammed by the tumor microenvironment itself. In this study, we investigated the changes of HSCs differentiation in advanced tumor-bearing mice. Methods:The tumor-bearing mice model was established by subcutaneously inoculating with xenografts of B16-F10 mouse melanoma cells into the right back of male wild-type C57BL/6 mice. Hematopoietic stem cells and multilineage differentiation were evaluated using blood routine, HE-staining, flow cytometry assay and HSCs culture techniques. Results: The multilineage differentiation of hematopoietic stem cells was reprogrammed in vivo. Especially, the differentiations of megakaryocyte and erythrocyte were blocked, while myeloid cell and lymphoid cell differentiation was encouraged in advanced tumor-bearing mice. Conclusion: In this study we showed the potential mechanism of hematopoietic disorder in tumor condition from a respective of hematopoietic stem cell and multilineage differentiation, which provided new knowledge regarding cachexia.