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Semaxinib

CAS No. : 204005-46-9

MCE 国际站：Semaxinib

产品活性：Semaxinib (SU5416) 是有效，选择性的 VEGFR (Flk-1/KDR) 抑制剂，IC₅₀ 为 1.23 μM。

研究领域：Protein Tyrosine Kinase/RTK

作用靶点：VEGFR

In Vitro: Semaxinib (SU5416) inhibits VEGF-driven mitogenesis in a dose-dependent manner with an IC₅₀ of 0.04±0.02 μM (n=3). In contrast, Semaxinib (SU5416) blocks FGF-dependent mitogenesis of HUVECs with an IC₅₀ of 50 μM (n=10). An IC₅₀ of 20.26±5.2 μM, which is about 20-fold less in potency on PDGF-dependent autophosphorylation, is observed when SU5416 is tested in NIH 3T3 cells overexpressing the human PDGF receptor β.

In Vivo: Daily administration of Semaxinib (SU5416) (i.p., 3 mg/kg/day) inhibits the local growth of C6 tumors in the colon. A comparable level of growth inhibition (62% by day 16; P=0.001) is observed for tumors growing in the colon in comparison with ones growing in the hindflank region (54% by day 18; P=0.001). These results indicate that Semaxinib (SU5416) could inhibit tumor growth at a site other than the subcutaneous implantation site, where the preexisting vasculature may be different. Daily treatment with Semaxinib (SU5416) (25 mg/kg) results in a significantly lower tumor growth rate with tumor masses of up to 8% of that present in control animals by day 22 after implantation. Inhibition of tumor growth is clearly preceded by a marked reduction of the tissue area covered by the newly formed glioma microvasculature in the Semaxinib-treated group, indicating a reduced initial tumor vascularization.

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