Figure 3.
Time- and dose-dependent changes in tumor volume and plasma VEGF produced by tumor and host. (a) Tumor volume changes over time after two weeks of treatment with vehicle or sunitinib at 20, 40, and 80 mg/kg/day in A431 xenograft mice. Treatment began on day 23. (b) Simulated time profile of plasma VEGF produced by tumor after administration of vehicle, 20, 40, and 80 mg/kg/day dose of sunitinib. Corresponding tumor volume changes are shown in a. (c) Comparison of VEGF produced by host and tumor cells, after treatment with sunitinib at 40 and 80 mg/kg/day for two weeks starting at day 23. (d) Total VEGF concentrations and contribution of VEGF produced by host and tumor at the end of the study on day 36.