CD274 and cancer: We next assessed the effects of the selective inhibitors of Wnt/β-catenin signaling, including XAV-939 (a potent tankyrase inhibitor that targets Wnt/β-catenin signaling) and Wnt-C59 (a potent porcupine inhibitor), on the upregulation of PD-L1 in BMFs induced by CMT167 or MC38 cancer cells.