生物活性 | |||
---|---|---|---|
描述 | Hepatocyte growth factor (HGF) receptor, c-Met, is the prototypic member of a family of receptor tyrosine kinases unique to deuterostomes and has emerged as an important target for the development of novel cancer therapeutics. SGX523 is a novel, ATP-competitive and selective c-Met inhibitor with an IC50 of 4 nM and a Ki of 2.7 nM. In the gastric cancer cell line GTL16, c-Met gene amplification led to constitutive signaling, which was abolished by SGX523 with an IC50 of 0.04 μM. SGX523 also abrogated HGF induced signaling in A549 lung cancer cells with an IC50 of 0.012 μM for the inhibition of c-Met autophosphorylation. Further, SGX523 inhibited the growth of gastric and lung cancer cell lines with amplification of the c-Met gene. In vivo, SGX523 significantly retarded the growth of preestablished GTL16 tumors when administered orally at doses of ≥10 mg/kg twice daily. Moreover, SGX523 (10 mg/kg; twice daily) potently inhibited U87MG tumor growth; SGX523 (30 mg/kg; twice daily) led to clear regression of U87MG tumors[3]. | ||
作用机制 | SGX-523 binds to the ATP site of an inactive conformation[3]. |
实验方案 | |||
---|---|---|---|
1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.78mL 0.56mL 0.28mL |
13.91mL 2.78mL 1.39mL |
27.82mL 5.56mL 2.78mL |
参考文献 |
---|