生物活性 | |||
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描述 | The oncogenic tyrosine kinase Bcr-Abl plays a central role in the pathogenesis of chronic myelogenous leukemia, thus makes it as the therapy drug target. However, it is demonstrated that the mutations of Bcr-Abl kinase have been the most common mechanism of drug resistance, such as imatinib. Nilotinib is a potent and selective Bcr-Abl inhibitor with IC50 values of 15nM, as well as IC50 values ranging in 9-400nM for different Abl mutations except the T315l mutation (measured by in vitro kinase assays)[1]. Though Nilotinib was structured based on imatinib, in vitro study showed that Nilotinib showed differential sensitivity of Abl point mutations with imatinib[1][2]. Nilotinib inhibited proliferation of Ba/F3 cells expressing G250E, E255K(V), F317L, M351T, F486S, M244V, L248R, Q252H, Y253H, E255K, E279K, E282D, V289S, and L348M Bcr-Abl mutants at concentration<1μM, as well as tyrosine autophosphorylation of the E255K, E255V, F317L, M351T and F486S Bcr-Abl mutants with mean IC50 values of 150, 246, 41, 31 and 43 nM, respectively. Activity against PDGFR and c-Kit by Nilotinib also can be observed at concentration<200nM. Oral dose of 75mg/kg Nilotinib prolonged survival and decreased tumor burden in an imatinib-resistant Bcr-Abl mutant BMT model[2]. | ||
作用机制 | Nilotinib was found to bind to the inactive conformation of Abl as observed for imatinib, resulting differential sensitivity of Abl point mutations by Nilotinib.[2] |
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 |
697 | Growth Inhibition Assay | IC50=11.2101 μM | SANGER | ||
769-P | Growth Inhibition Assay | IC50=19.6335 μM | SANGER | ||
A101D | Growth Inhibition Assay | IC50=10.8923 μM | SANGER |
临床研究 | |||||
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NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT00785785 | - | Completed | - | - | |
NCT01220648 | Chronic Myeloid Leukemia | Phase 1 | Completed | - | Germany ... 展开 >> Novartis Investigative Site Leipzig, Germany, 04103 收起 << |
NCT01806571 | Untreated Adult Acute Myeloid ... 展开 >>Leukemia 收起 << | Phase 2 | Active, not recruiting | April 18, 2020 | United States, Arizona ... 展开 >> Mayo Clinic in Arizona Scottsdale, Arizona, United States, 85259 United States, Minnesota Mayo Clinic Rochester, Minnesota, United States, 55905 收起 << |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
1.89mL 0.38mL 0.19mL |
9.44mL 1.89mL 0.94mL |
18.89mL 3.78mL 1.89mL |
参考文献 |
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