Biological characteristics and superiority of rat bone marrow mesenchymal stem cells isolated and cultured using whole bone marrow adherence method / 中国组织工程研究

ABSTRACT

BACKGROUND:Bone marrow mesenchymal stem cells are rare in vivo. It is important to purify, proliferate and differentiate bone marrow mesenchymal stem cells in vitro for further research. OBJECTIVE:To evaluate the biological characteristics, phenotype and multiple differentiation potential cultivation of bone marrow mesenchymal stem cells that are isolated, cultured and purified using the whole bone marrow adherence method. METHODS:Bone marrow mesenchymal stem cells were isolated, purified and cultured by the whole bone marrow adherence method. Morphological observation and flow cytometry determination of cellsurface markers were performed. Osteogenic and adipogenic differentiation of bone marrow mesenchymal stem cells was induced. RESULTS AND CONCLUSION:We successful y purified and proliferated bone marrow mesenchymal stem cells with high cellviability and differentiation ability. Fibroblast-like cells were harvested, expressing CD29 and CD90, but not CD45. Fol owing osteogenic and adipogenic induction, cells were positive for oil red O staining and alizarin red staining. The whole bone marrow adherence method is easy to operate, has little impact on cellviability, and can be used to harvest high-purification bone marrow mesenchymal stem cells with high cellviability and differentiation ability.