Synthesis and Biological Investigation of Phenothiazine-Based Benzhydroxamic Acids as Selective Histone Deacetylase 6 Inhibitors
作者:Katharina Vögerl、Nghia Ong、Johanna Senger、Daniel Herp、Karin Schmidtkunz、Martin Marek、Martin Müller、Karin Bartel、Tajith B. Shaik、Nicholas J. Porter、Dina Robaa、David W. Christianson、Christophe Romier、Wolfgang Sippl、Manfred Jung、Franz Bracher
DOI:10.1021/acs.jmedchem.8b01090
日期:2019.2.14
lines. Structure-activity relationship studies revealed that incorporation of a nitrogen atom into the phenothiazine framework results in increased potency and selectivity for HDAC6 (more than 500-fold selectivity relative to the inhibition of HDAC1, HDAC4, and HDAC8), as rationalized by molecular modeling and docking studies. The binding mode was confirmed by co-crystallization of the potent azaphenothiazine
吩噻嗪系统被确定为有效和选择性组蛋白脱乙酰基酶6(HDAC6)抑制剂的有利封端基团。在这里,我们报告吩噻嗪及其类似物的制备和系统变化,其中吩噻嗪及其类似物含有苯氧肟酸部分作为锌结合基团。我们通过重组HDAC酶分析,通过蛋白质印迹确定细胞中蛋白质的乙酰化水平(微管蛋白与组蛋白乙酰化)以及评估它们对各种癌细胞系的作用,评估了它们选择性抑制HDAC6的能力。构效关系研究表明,将氮原子掺入吩噻嗪骨架中会提高HDAC6的效力和选择性(相对于HDAC1,HDAC4和HDAC8的抑制作用,选择性高500倍以上),通过分子建模和对接研究合理化。通过有效的氮杂吩噻嗪抑制剂与来自Danio rerio HDAC6的催化结构域2的共结晶来确认结合模式。