Discovery of secondary sulphonamides as IDO1 inhibitors with potent antitumour effects <i>in vivo</i>
作者:Shushan Ge、Haiqing Zhong、Xuewei Ma、Yingbo Zheng、Yi Zou、Fang Wang、Yan Wang、Yue Hu、Yuezhen Li、Wen Liu、Wenjie Guo、Qiang Xu、Yisheng Lai
DOI:10.1080/14756366.2020.1765165
日期:2020.1.1
Indoleamine 2,3-dioxygenase 1 (IDO1) as a key rate-limiting enzyme in the kynurenine pathway of tryptophan metabolism plays an important role in tumour immune escape. Herein, a variety of secondary sulphonamides were synthesised and evaluated in the HeLa cell-based IDO1/kynurenine assay, leading to the identification of new IDO1 inhibitors. Among them, compounds 5d, 5l and 8g exhibited the strongest
吲哚胺2,3-二加氧酶1(IDO1)是色氨酸代谢的犬尿氨酸途径中的关键限速酶,在肿瘤免疫逃逸中起重要作用。本文中,合成了多种仲磺酰胺,并在基于HeLa细胞的IDO1 /犬尿氨酸测定中进行了评估,从而鉴定了新的IDO1抑制剂。其中,化合物5d,5l和8g显示出最强的抑制作用,并且与命中的化合物BS-1相比具有显着改善的活性。体外结果表明,这些化合物可恢复T细胞增殖并抑制幼稚CD4 + T细胞分化为高度免疫抑制的FoxP3 +调节性T(Treg)细胞,而不会影响HeLa细胞的活力和IDO1蛋白的表达。重要的,药效学分析表明,化合物5d在携带免疫功能小鼠的CT26和B16F1肿瘤中均具有有效的抗肿瘤作用,而在免疫缺陷小鼠中则没有。从功能上讲,后续实验表明化合物5d可有效抑制肿瘤细胞增殖,诱导细胞凋亡,上调IFN-γ和颗粒酶B的表达并抑制FoxP3 + Treg细胞分化,从而激活免疫系统。因此,化