Fig. 4
Effect of Wnt2 on osteogenic differentiation of hASCs under cyclic strain. (*p < 0.05, there were significant differences between these two groups) a The results of real-time PCR showed that the Wnt2b expression in EX-Wnt2b group increased compared to the EX-Ctrl group; Wnt2 expression in the siWnt2 group significantly decreased, compared to the siR-Ctrl group. b Protein blots were listed in the left column. The results of western blot showed that Wnt2 expression in the EX-Wnt2 group increased, compared to the EX-Ctrl group; Wnt2 expression in the siWnt2 group significantly decreased, compared to the siR-Ctrl group. c After EX-Wnt2 transfection, the results of real-time PCR showed that RUNX2, ALP, SPARC, Wnt7b, and β-catenin significantly enhanced, compared to the EX-Ctrl group. d After siWnt2 transfection, the results of real-time PCR showed that RUNX2, ALP, SPARC, Wnt7b, and β-catenin significantly decreased, compared to the siR-Ctrl group. e Comparing to the EX-Ctrl group, both the ALP activity and the content of Ca2+ were significantly increased when EX-Wnt2 transfected. f Comparing to the siR-Ctrl group, both the ALP activity and the content of Ca2+ were significantly decreased when siWnt2 transfected