Discovery of MFH290: A Potent and Highly Selective Covalent Inhibitor for Cyclin-Dependent Kinase 12/13
作者:Yao Liu、Mingfeng Hao、Alan L. Leggett、Yang Gao、Scott B. Ficarro、Jianwei Che、Zhixiang He、Calla M. Olson、Jarrod A. Marto、Nicholas P. Kwiatkowski、Tinghu Zhang、Nathanael S. Gray
DOI:10.1021/acs.jmedchem.9b01929
日期:2020.7.9
but selective inhibition of endogenous CDK12 is difficult. Here, we report the development of MFH290, a novel cysteine (Cys)-directed covalent inhibitor of CDK12/13. MFH290 forms a covalent bond with Cys-1039 of CDK12, exhibits excellent kinome selectivity, inhibits the phosphorylation of serine-2 in the C-terminal domain (CTD) of RNA-polymerase II (Pol II), and reduces the expression of key DNA damage
细胞周期蛋白依赖性激酶12(CDK12)的遗传耗竭或类似物敏感性CDK12的选择性抑制可降低DNA损伤修复基因的表达,但内源性CDK12的选择性抑制却很困难。在这里,我们报告MFH290,CDK12 / 13的新型半胱氨酸(Cys)定向共价抑制剂的发展。MFH290与CDK12的Cys-1039形成共价键,表现出优异的激酶组选择性,抑制RNA聚合酶II(Pol II)C端结构域(CTD)中丝氨酸2的磷酸化,并降低关键DNA的表达损伤修复基因。重要的是,这些作用被证明是依赖CDK12的,因为Cys-1039的突变使该激酶对MFH290无效,并恢复了Pol II CTD磷酸化和DNA损伤修复基因的表达。与其对DNA损伤修复基因表达的影响一致,