Fig. 6. PTGDS regulated MYH9 and then Wnt–β-catenin–STAT3 signaling through influencing the ubiquitination of GSK3-β in DLBCL.
A and B AT56 inhibited the expression of MYH9 and the activation of Wnt–β-catenin–STAT3 signaling in vitro and in vivo. C Confocal immunofluorescent images indicated the colocalization of MYH9 and GSK3-β protein in LY1 and LY3 cells. Bar = 40 μm. D CoIP assay showed the bindings between MYH9 protein and GSK3-β protein in LY1 and LY3 cells. E and F PTGDS and MYH9 inhibition decreased the ubiquitination of GSK3-β and prolonged its half-life in DLBCL. G The role of PTGDS and MYH9 inhibition on the expression of STAT3 mRNA in LY1 and LY3 cells. H ChIP assay showed the binding of TCF4 and STAT3 promoter in LY1 and LY3 cells. Data are shown as the mean ± SD. *p < 0.05; **p < 0.01; ***p < 0.001.