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. 2009 Oct 20;101(10):1717–1723. doi: 10.1038/sj.bjc.6605366

Figure 1.

Figure 1

Inhibition of receptor autophosphorylation by various tyrosine kinase inhibitors. To compare the activities of pazopanib, sunitinib, and sorafenib, we evaluated their inhibitory effects against wild-type VEGFR-2, c-Kit, PDGFR-β, and Flt-3 receptors in HUVEC (for VEGFR-2), NCI-H526 (c-Kit), HFF (PDGFR-β), and RS4;11 (Flt-3). Cells were serum-starved overnight and then treated with DMSO or different concentrations of pazopanib, sunitinib, or sorafenib for 2 h. Cells were then stimulated with respective ligands as described in the cellular autophosphorylation section under Materials and Methods. Total receptor was immunoprecipitated using antireceptor antibodies and phosphorylation was detected using anti-pTyr antibody following western blot analysis.