Figure 5. Collective treatment with BMP4 and Wnt3a does not inhibit precursor differentiation greater than individual treatment with BMP4 or Wnt3a.
Rat OPCs were cultured and then placed in DM with 50 ng/ml BMP4, 10 ng/ml BMP4, 50 ng/ml Wnt3a or 50 ng/ml Wnt3a and 10 ng/ml BMP4. After 3 days, 50 ng/ml BMP4 decreased GalC+ cells by 92% relative to control conditions (P<0.05), 10 ng/ml BMP4 decreased OPC differentiation by 35% (P<0.05), 50 ng/ml Wnt3a decreased OPC differentiation by 38% (P<0.05) and 50 ng/ml Wnt3a combined with 10 ng/ml BMP4 decreased OPC differentiation by 44% (P<0.05). The difference between the combined addition of BMP4 and Wnt3a was not significantly different from the application of either treatment factor individually (n = 3).