iCRT14 suppresses the transcriptional activity of canonical Wnt signaling, downregulates Wnt/β-catenin-induced target genes, and inhibits the growth of colorectal cancer cells in vitro. iCRT14 shows a modest reduction in the amount of Dvl but has no effect on Dvl phosphorylation itself. iCRT14 inhibits the Wnt responsive STF16-luc reporter in mammalian HEK293 cells with an IC50 of 40.3 nM. iCRT14 can also interfere with TCF binding to DNA in addition to its ability to influence TCF-β-catenin interaction.
