生物活性 | |||
---|---|---|---|
靶点 |
|
||
描述 | The deregulation of phosphatidylinositol 3-kinase (PI3K)/Akt pathway is commonly seen in various human cancers. CH5132799 is a PI3K inhibitor that inhibits PI3Kα, β, δ, γ with IC50 values of 14 nM, 0.12 mM, 0.5 mM and 36 nM, respectively. In breast cancer KPL-4 cells harboring PIK3CA mutation, treatment of 0.001 – 10 mM CH5132799 for 2h suppressed the phosphorylation of Akt and its downstream factors, S6K, S6 and 4E-BP1. When KPL-4 cells were treated with 1 mM CH5132799 for 48h, the G1 arrest and Caspase 3/7 activity were induced. CH5132799 also demonstrated anti-proliferative effect in 60 breast, ovarian, prostate, and endometrial cancer cell lines with 75% of lines having an IC50 value less than 1mM and 38% of lines having an IC50 under 0.3 mM. In the xenograft model of KPL-4 cells harboring the PIK3CA H1047R mutation, daily oral administration of CH5132799 (0.39 – 25 mg/kg/day) showed anti-tumor effect since day 21 post tumor implantation. The inhibition of the PI3K pathway and Akt phosphorylation were also observed in this xenografts model treated by CH5132799. Oral administration of CH5132799 (12.5 mg/kg/day, 12 consecutive days) in mice bearing trastuzumab-insensitive KPL-4 tumors induced remarkable reduction in the tumor volume, and eventually the disappearance of the tumors[3]. | ||
作用机制 | CH5132799 is a selective, ATP-competitive inhibitor of class I PI3K that interacts with the ATP-binding site of PI3K[3]. |
实验方案 | |||
---|---|---|---|
1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.65mL 0.53mL 0.26mL |
13.25mL 2.65mL 1.32mL |
26.50mL 5.30mL 2.65mL |
参考文献 |
---|