Variation of matrix metalloproteinase 2 levels during Kartogenin-induced directional differentiation of human bone marrow mesenchymal stem cells / 中国组织工程研究

ABSTRACT

BACKGROUND:Kartogenin can induce chondrogenic differentiation of mesenchymal stem cel s as reported in in vitro experiments. The discovery of Kartogenin finds a novel path to cartilage repair, and it is expected to develop into a new drug to treat osteoarthritis. OBJECTIVE:To observe the inductive role of Kartogenin in the process of human bone marrow mesenchymal stem cel s differentiating into chondrocytes in vitro. METHODS:In vitro cultured human bone marrow mesenchymal stem cel s were grown to the logarithmic phase, and then divided into control group (0μmol/L Kartogenin), 1μmol/L Kartogenin group, and 10μmol/L Kartogenin group. After 72 hours of culture, cel proliferation and differentiation were observed microscopical y. Matrix metal oproteinase 2 and type II col agen levels in the cel supernatant were detected by enzyme linked immunosorbent assay and immunofluorescence staining, respectively. RESULTS AND CONCLUSION:Under the microscope, Kartogenin was shown to significantly promote the proliferation and differentiation of human bone marrow mesenchymal stem cel s. With the increase of Kartogenin concentrations, the level of type II col agen was increased, while the level of matrix metal oproteinase 2 was decreased. These findings indicate that Kartogenin can induce human bone marrow mesenchymal stem cel s to differentiate into chondrocytes, and with the increase of Kartogenin concentration, destruction of the cartilage extracel ular matrix may be inhibited.