Improvement of the novel inhibitor for Mycobacterium enoyl-acyl carrier protein reductase (InhA): a structure–activity relationship study of KES4 assisted by in silico structure-based drug screening
作者:Junichi Taira、Tomohiro Umei、Keitaro Inoue、Mitsuru Kitamura、Francois Berenger、James C. Sacchettini、Hiroshi Sakamoto、Shunsuke Aoki
DOI:10.1038/s41429-020-0293-6
日期:2020.6
InhA or enoyl-acyl carrier protein reductase of Mycobacterium tuberculosis (mtInhA), which controls mycobacterial cell wall construction, has been targeted in the development of antituberculosis drugs. Previously, our in silico structure-based drug screening study identified a novel class of compounds (designated KES4), which is capable of inhibiting the enzymatic activity of mtInhA, as well as mycobacterial
控制结核分枝杆菌细胞壁结构的结核分枝杆菌的InhA或烯酰基酰基载体蛋白还原酶(mtInhA)已成为抗结核药物的开发目标。以前,我们基于计算机模拟的药物筛选研究确定了一种新型化合物(称为KES4),该化合物能够抑制mtInhA的酶促活性以及分枝杆菌的生长。这些化合物由四个环结构(AD)组成,MD模拟预测与D环的mtInhA和B环与C环之间的亚甲基的特定相互作用;但是,A环结构仍有改进的空间。在这项研究中,在计算机对接模拟的帮助下,尝试了A环的结构-活性关系研究。简单来说,构建了A环修饰的KES4的虚拟化学文库,并使用GOLD程序对mtInhA进行了计算机对接模拟。在选定的候选化合物中,我们实现了7种化合物的合成,并评估了合成分子的生物活性(对InhA活性以及分枝杆菌生长和细胞毒性的影响)。在测试的化合物中,两种候选化合物(化合物3d和3f)作为针对分枝杆菌的mtInhA靶向抗感染剂表现出比先