WB-308

WB-308 is a novel small molecule that was identified as an inhibitor of EGFR by an in vitro EGFR kinase activity system. WB-308 was able to reduce the proliferation and clonogenicity of NSCLC cells, causing G2/M phase arrest and apoptosis. In addition, WB-308 inhibited tumor growth in two in vivo animal models (lung orthotopic transplantation model and patient-derived clonal mouse model) . WB-308 impaired the phosphorylation of EGFR, AKT, and ERK1/2 proteins. Compared with Gefitinib, WB-308 had lower cytotoxicity. This study showed that WB-308 is a new EGFR-TKI that may be considered as an alternative to Gefitinib in the clinical treatment of NSCLC.