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XL184 is an inhibitor of VEGFR2 (IC50 = 0.035 nM).1 It is selective for VEGFR2 over Ron, EGFR, IGF-1R, and EphA4/B4, but also inhibits c-Met, RET, c-Kit, Axl, FLT3, and Tie2 (IC50s = 1.3, 5.2, 4.6, 7, 11.3, and 14.3 nM, respectively). XL184 (4.6 nM) inhibits VEGF-induced tubule formation in human microvascular endothelial cells (HMVECs). It reduces migration and invasion of B16/F10 melanoma cells induced by hepatocyte growth factor (HGF) when used at a concentration of 123 nM. XL184 (60 mg/kg) induces tumor regression in an MDA-MB-231 breast cancer mouse xenograft model. Unlike sunitinib (Item No. 13159), XL184 does not increase the number of pulmonary tumor foci in an MDA-MB-231 mouse metastasis model. It also protects primary placental fibroblasts from Zika virus infection.2 Formulations containing XL184 have been used in the treatment of renal cell and hepatocellular carcinomas.
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1. Cabozantinib (XL184), a novel MET and VEGFR2 inhibitor, simultaneously suppresses metastasis, angiogenesis, and tumor growth. Mol. Cancer Ther. 10(12), 2298-2308 (2011).
2. Screening bioactives reveals nanchangmycin as a broad spectrum antiviral active against Zika virus. Cell Rep. 18(3), 804-815 (2017).