Achiral Derivatives of Hydroxamate AR-42 Potently Inhibit Class I HDAC Enzymes and Cancer Cell Proliferation
作者:Jiahui Tng、Junxian Lim、Kai-Chen Wu、Andrew J. Lucke、Weijun Xu、Robert C. Reid、David P. Fairlie
DOI:10.1021/acs.jmedchem.0c00230
日期:2020.6.11
active inhibitor of histone deacetylases (HDACs) in clinical trials for multiple myeloma, leukemia, and lymphoma. It has few hydrogen bond donors and acceptors but is a chiral 2-arylbutyrate and potentially prone to racemization. We report achiral AR-42 analogues incorporating a cycloalkyl group linked via a quaternary carbon atom, with up to 40-fold increased potency against human class I HDACs (e
在多发性骨髓瘤,白血病和淋巴瘤的临床试验中,AR-42是组蛋白脱乙酰基酶(HDAC)的口服活性抑制剂。它几乎没有氢键供体和受体,但是是手性的2-芳基丁酸酯,可能易于消旋。我们报道了非手性AR-42类似物,其包含通过季碳原子连接的环烷基,对人类I类HDAC的效力提高了40倍(例如,JT86,IC 500.7 nM,HDAC1),对五种人类癌细胞系的细胞毒性增加了25倍,而对正常人类细胞的毒性降低了多达70倍。JT86在促进MM96L黑色素瘤细胞中乙酰化组蛋白H4积累方面比racAR-42强9倍。分子模型和结构-活性之间的关系支持四氢吡喃与HDAC1的结合,而四氢吡喃则是对酶表面水的疏水屏蔽。这种有效的I类HDAC抑制剂可在AR-42活跃的疾病(癌症,寄生虫感染,炎性疾病)中显示出益处。