Antibacterial sulfonimidamide-based oligopeptides as type I signal peptidase inhibitors: Synthesis and biological evaluation
作者:Andrea Benediktsdottir、Lu Lu、Sha Cao、Edouard Zamaratski、Anders Karlén、Sherry L. Mowbray、Diarmaid Hughes、Anja Sandström
DOI:10.1016/j.ejmech.2021.113699
日期:2021.11
for developing novel antibiotics. Antibacterial activity depends on these oligopeptides having a cationic modification to increase their permeation. Unfortunately, this modification is associated with cytotoxicity, motivating the need for novel approaches. The sulfonimidamide functionality has recently gained much interest in drug design and discovery, as a means of introducing chirality and an imine-handle
已知具有亲脂尾部的寡肽硼酸盐可抑制大肠杆菌中的 I 型信号肽酶,这是开发新型抗生素的有希望的药物靶点。抗菌活性取决于这些寡肽具有阳离子修饰以增加其渗透性。不幸的是,这种修饰与细胞毒性有关,激发了对新方法的需求。磺酰亚胺官能团最近在药物设计和发现中引起了极大的兴趣,作为引入手性和亚胺手柄的一种手段,从而允许掺入额外的取代基。这反过来又可以调整化学和生物特性,这是在这里探索的。我们表明,在一系列信号肽酶抑制剂中,在亲脂性尾部和肽之间引入磺胺会导致抗菌活性,而磺胺等排体和先前已知的非阳离子类似物则没有活性。此外,我们发现用磺胺替代磺胺会降低细胞毒性,并且通过在磺胺基序中添加阳离子侧链也可以看到类似的结果。这是将磺酰亚胺官能团掺入生物活性肽,更具体地说是掺入抗菌寡肽的第一份报告,并评估了其生物效应。