SKLB1002 shows strikingly lower cytotoxicity on normal human cells L-02. SKLB1002 significantly inhibits HUVEC proliferation, migration, invasion, and tube formation, by inhibiting VEGF-induced phosphorylation of VEGFR2 kinase and the downstream protein kinases including ERK, FAK, and Src.
In vivo
In the zebrafish embryos, SKLB1002 remarkably blocks the formation of embryonic and tumor-induced angiogenesis with no or least impact on normal cell proliferation. In athymic mice bearing SW620 or HepG2 xenografts, SKLB1002 (100 mg/kg daily, i.p.) causes significant inhibition of tumor growth, inhibits tumor angiogenesis and induces tumor apoptosis. In 4T1 and CT26 tumor model, SKLB1002 and local hyperthermia produce a synergistic antiangiogenesis, anticancer and promotion of apoptosis efficacy.