Discovery of <i>N</i><sup>2</sup>-(4-Amino-cyclohexyl)-9-cyclopentyl-<i>N</i><sup>6</sup>-(4-morpholin-4-ylmethyl-phenyl)-<i>9H</i>-purine-2,6-diamine as a Potent FLT3 Kinase Inhibitor for Acute Myeloid Leukemia with FLT3 Mutations
作者:Tomáš Gucký、Eva Řezníčková、Tereza Radošová Muchová、Radek Jorda、Zuzana Klejová、Veronika Malínková、Karel Berka、Václav Bazgier、Haresh Ajani、Martin Lepšík、Vladimír Divoký、Vladimír Kryštof
DOI:10.1021/acs.jmedchem.7b01529
日期:2018.5.10
FLT3 tyrosine kinase is a potential drug target in acute myeloid leukemia (AML) because patients with FLT3-ITD mutations respond poorly to standard cytotoxic agents and there is a clear link between the disease and the oncogenic properties of FLT3. We present novel 2,6,9-trisubstituted purine derivatives with potent FLT3 inhibitory activity. The lead compound 7d displays nanomolar activity in biochemical
FLT3酪氨酸激酶是急性髓细胞性白血病(AML)的潜在药物靶标,因为具有FLT3-ITD突变的患者对标准细胞毒剂的反应较差,并且该疾病与FLT3的致癌特性之间存在明确的联系。我们目前具有有效的FLT3抑制活性的新型2,6,9-三取代嘌呤衍生物。铅化合物7d在生化分析中显示纳摩尔活性,并选择性阻断具有FLT3-ITD突变的AML细胞系的增殖,而其他转化的和正常的人类细胞的敏感性降低了几个数量级。经过7d处理的MV4-11细胞抑制了FLT3的磷酸化及其下游信号通路,随后抑制了G1细胞的周期和凋亡。此外,单剂皮下注射了MV4-11异种移植物的小鼠在7d内持续48小时对FLT3和STAT5磷酸化产生了持续抑制作用,这与给予参考FLT3抑制剂Quizartinib后观察到的较短作用相反。