FIGURE 6.
BMP does not alter Axin expression or Wnt/β-catenin signaling. Primary chondrocyte cells from Axin2LacZ/+ knockin mice were treated with BMP-2 (100 ng/mL) and cell extracts harvested between 0 and 72 h. β-galactosidase reporter activity was measured (A). C5.18 cells were transfected with the Wnt Topflash reporter and treated with BMP-2 (100 ng/mL) in the presence or absence of Wnt3a. Cell extracts were harvested after 24 h and luciferase activity was measured. The luciferase activity was normalized to renilla luciferase (B).
