Effect of rhBMP-2 and Osteogenic Revulsants on Proliferation and Differentiation of Bone Marrow Stromal Cells in Rats / 华中科技大学学报（医学）（英德文版）

ABSTRACT

The effects of recombinant human bone morphogenetic protein-2 (rhBMP-2) and osteo- genic revulsants alone or in combination at different time points and in different dosages on prolifera- tion and osteogenesis of bone marrow stromal cells (BMSCs) in SD rats were investigated. Rat BMSCs were cultured in vitro and induced by rhBMP-2 in different dosages (10, 50, 100 and 2013μg/L) alone or in combination with osteogenic revulsants. MTT colorimetric assay was used to evaluate The proliferation, activity of alkaline phosphoric (ALP) and osteocalcin were measured at 3rd, 6th, 9th, 12th day respectively. The results showed that rhBMP-2 and osteogenic revulsants could promote the differentiation of BMSCs towards osteoblast phenotype. The proliferation of BMSCs could be enhanced by rhBMP-2 in a dose-dependent manner. The expression of osteoblast phenotype was significantly higher by using both of them than by using them alone, which was veri- fied by the activity of ALP and osteocalcin. It was suggested that the combined use of rhBMP-2 and osteogenic revulsants could promote the proliferation and simultaneously induce and maintain the expression of osteoblast phenotype of BMSCs in rats.