生物活性 | |||
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靶点 |
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描述 | Cdc7 is an essential kinase that promotes DNA replication by activating origins of replication. PHA-767491 is an effective, ATP-competitive, dual Cdc7/CDK9 inhibitor with IC50s of 10 nM and 34 nM, respectively. Cell proliferation was inhibited in a panel of 61 human cell lines challenged with low micromolar concentrations of PHA-767491, with an average IC50 value of 3.17 mM and less than 10 mM in all cases. In a smaller panel of 17 different cell types, using sub-G1 DNA content as a parameter of apoptosis, 24 h of exposure to either 5 or 10 mM PHA-767491 was sufficient to cause cell death. Importantly, PHA-767491 is capable of preventing duplication, and it can kill both p53-positive and p53-negative tumor cells of different origins. Treatment with 5 mM PHA-767491 for 6 to 9 hours in HeLa cells was necessary to observe a marked decrease in the number of bromodeoxyuridine (BrdU)-positive cells. After intravenous administration at two dose levels of 20 and 30 mg/kg twice a day for five consecutive days in nude mice carrying subcutaneous implanted tumors, a dose-dependent reduction in tumor volume with respect to vehicle-treated animals was observed[3]. | ||
作用机制 | PHA-767491 competes with ATP for binding site, thus behaving as a pure ATP competitor. |
细胞研究 | |||||
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细胞系 | 浓度 | 检测类型 | 检测时间 | 活动说明 | 数据源 |
human A2780 cells | Proliferation assay | 72 h | Antiproliferative activity against human A2780 cells expressing p53 gene after 72 hrs by proliferative assay, IC50=1.07 μM | 18469809 | |
human COLO205 cells | Proliferation assay | 72 h | Antiproliferative activity against human COLO205 cells after 72 hrs by luciferase based assay, IC50=1.5 μM | 19115845 | |
human HCT116 cells | Proliferation assay | 72 h | Antiproliferative activity against human HCT116 cells expressing p53 gene after 72 hrs by proliferative assay, IC50=0.97 μM | 18469809 |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
4.00mL 0.80mL 0.40mL |
20.02mL 4.00mL 2.00mL |
40.05mL 8.01mL 4.00mL |
参考文献 |
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