ZD-4190 is a submicromolar inhibitor of VEGF RTK activity in vitro with IC50 values of 29 ± 4 nM and 708 ± 63 nM for KDR and Flt-1, respectively.
ZD-4190 is a submicromolar inhibitor of VEGF RTK activity in vitro with IC50 values of 29 ± 4 nM and 708 ± 63 nM for KDR and Flt-1, respectively.
ZD4190 is a submicromolar inhibitor of VEGF RTK activity in vitro with greatest effect against KDR. Selectivity versus FGFR1 tyrosine kinase activity is demonstrated, with at least a 30-fold difference in the IC50 required to inhibit HUVEC proliferation stimulated by VEGF or bFGF, respectively. No effects on basal HUVEC growth are observed, even at the maximum ZD4190 concentration examined in these assays (10 μM)[1].
Chronic once-daily oral dosing of ZD4190 to young rats produces a dose-dependent increase in the femoral epiphyseal growth plate area. Once-daily oral dosing of ZD4190 to mice bearing established (?0.5 cm3) human tumor xenografts (breast, lung, prostate, and ovarian) elicits significant antitumor activity and at doses that would not be expected to have any direct antiproliferative effect on tumor cells. In a PC-3 xenograft model, 10 weeks of ZD4190 dosing prolongs tumor cytostasis and upon withdrawal of therapy, tumor growth resumed after a short delay[1].
[1] Wedge SR, et al. Cancer Res. 2000, 60(4):970-5.
Cell experiment: | The cytotoxicity of ZD4190 for PDVC57B cells is established when 104 cells are exposed to 1-10?μM ZD4190 for 96?h before MTS solution is added and the optical density measured at 490?nm. Cells are also grown to 40% confluence and treated with 1-100?μM ZD4190 for 7 days and the cytopathic effect examined by staining with crystal violet. |
Animal experiment: | ZD4190 is suspended in a 1% (v/v) solution of polyoxyethylene sorbitan mono-oleate in deionized water and administered by oral gavage (0.1 mL/10 g body weight). In each experiment, mice are randomized to receive either vehicle or ZD4190, administered once daily using a 1 day (at 0 and 22 h) or 7 day (at 0, 24, 48, 72, 96, 120, 144, and 166 h) treatment regimen (i.e., daily administration of compound for 1 or 7 days with an additional dose given 2 h prior to the end of the treatment period) followed by DCEMRI under terminal anesthesia. |
参考文献: [1]. Yang M, et al. PET imaging of early response to the tyrosine kinase inhibitor ZD4190. Eur J Nucl Med Mol Imaging. 2011 Jul;38(7):1237-47. doi: 10.1007/s00259-011-1742-z. Epub 2011 Mar 1. | |
动态评分
0.0