Discovery and preliminary structure–activity relationship of 1H-indazoles with promising indoleamine-2,3-dioxygenase 1 (IDO1) inhibition properties
作者:Shan Qian、Tao He、Wei Wang、Yanying He、Man Zhang、Lingling Yang、Guobo Li、Zhouyu Wang
DOI:10.1016/j.bmc.2016.10.003
日期:2016.12
necessary for IDO1 inhibition, and the substituent groups at the both 4-position and 6-position largely affect inhibitory activity. The docking model exhibited that the effective interactions of 1H-indazoles with ferrous ion of heme and key residues of hydrophobic Pocket A and B ensured the IDO1 inhibitory activities. The study suggested that the 1H-indazole was a novel interesting scaffold for IDO
吲哚胺2,3-双加氧酶1(IDO1)介导的色氨酸降解的犬尿氨酸途径被确定为逃避潜在有效免疫应答的肿瘤细胞中重要的免疫效应子途径。IDO1是抗癌治疗的一个有吸引力的靶标,并且IDO1抑制剂的发现在学术研究实验室和制药组织中都在紧锣密鼓地进行中。我们的研究发现1H-吲唑是一种具有重要IDO1抑制活性的新型关键药效团。合成了一系列新的1H-吲唑衍生物并确定了酶抑制活性,化合物2g表现出最高的活性,IC50值为5.3μM。1H-吲唑衍生物作为新型IDO1抑制剂的结构活性关系(SARs)分析表明1H-吲唑支架对于IDO1抑制是必需的,并且4位和6位的取代基都对抑制活性有很大影响。 。对接模型显示1H-吲唑与血红素亚铁离子以及疏水性口袋A和B的关键残基的有效相互作用确保了IDO1抑制活性。研究表明1H-吲唑是抑制IDO进一步发展的一种新颖有趣的支架。对接模型显示1H-吲唑与血红素亚铁离子以及疏水性口袋