Diaryl-substituted thiosemicarbazone: A potent scaffold for the development of New Delhi metallo-β-lactamase-1 inhibitors
作者:Jia-Qi Li、Le-Yun Sun、Zhihui Jiang、Cheng Chen、Han Gao、Jia-Zhu Chigan、Huan-Huan Ding、Ke-Wu Yang
DOI:10.1016/j.bioorg.2020.104576
日期:2021.2
superbug infection caused by New Delhi metallo-β-lactamase (NDM-1) has become an emerging public health threat. Inhibition of NDM-1 has proven challenging due to its shuttling between pathogenic bacteria. A potent scaffold, diaryl-substituted thiosemicarbazone, was constructed and assayed with metallo-β-lactamases (MβLs). The obtained twenty-six molecules specifically inhibited NDM-1 with IC50 0.038–34.7 µM
由新德里金属-β-内酰胺酶(NDM-1)引起的超级细菌感染已成为一种新兴的公共卫生威胁。由于 NDM-1 在病原菌之间穿梭,因此抑制 NDM-1 已被证明具有挑战性。构建了一种有效的支架,二芳基取代的缩氨基硫脲,并用金属-β-内酰胺酶 (MβLs) 进行了测定。获得的 26 个分子特异性抑制 NDM-1,IC 50 0.038–34.7 µM 范围(1e、2e和3d除外),1c是最有效的抑制剂(IC 50 = 0.038 µM)。合成缩氨基硫脲的构效关系表明,二芳基取代物,特别是 2-吡啶和 2-羟基苯提高了抑制剂的抑制活性。缩氨基硫脲对大肠杆菌-NDM-1表现出协同抗分枝杆菌作用,导致美罗培南的 MIC 降低 2-512 倍,而1c恢复抗生素对临床分离株的 16-256-、16- 和 2 倍的活性ECs、肺炎克雷伯菌和铜绿假单胞菌分别含有 NDM-1。此外,小鼠实验表明,1c与美罗培南具