DW0254

DW0254 (DW-0254,DW 0254) is a small molecules capable of inhibiting RAS-related C3 botulinum toxin substrate (RAC) small GTPase activation in ALL cell lines, directly binds to the hydrophobic pocket of PDE6D (Kd=436 nM, ITC), a RAS chaperone protein.DW0254 demonstrated dose-dependent RAC inhibition, arrest of proliferation and induced apoptosis in human leukemic cell lines (RS4;11 IC50=1.5-1.8 uM), also showed promising anti-leukemic activity in RAS-mutated cells (CCRF-CEM NRAS G12D, IC50=3.3-4.2 uM).DW0254 disrupted the interaction between PDE6D and RAS, disturbing RAS subcellular localization.DW0254 demonstrated anti-leukemic activity, decreased tumor progression in a murine xenograft model.