Structure–Activity Relationship Study of Antimicrobial Peptide PE2 Delivered Novel Linear Derivatives with Potential of Eradicating Biofilms and Low Incidence of Drug Resistance
作者:Jingying Zhang、Xu Ouyang、Fangyan Zhang、Beibei Li、Linlin Chang、Ping Yang、Wenbo Mao、Sanhu Gou、Yun Zhang、Hui Liu、Jia Yao、Jingman Ni
DOI:10.1021/acs.jmedchem.3c00181
日期:2023.7.13
Tyr residue at the 9th position had superior potency compared to the cyclic analogues and showed equivalent antimicrobial activity compared with PE2. Notably, 26 and 27 exhibited significant ability against multidrug-resistant bacteria, favorable resistance to protease, excellent performance against biofilm, low drug resistance, and high effectiveness against the mice pneumonia model. The antibacterial
抗生素耐药性病原体的不断出现极大地刺激并加速了对新药的需求。 PE2是一种具有广谱抗菌活性的环状脂肽。在此,首次采用4个环状类似物和23个线性类似物对其构效关系进行了系统研究。筛选出的N端具有不同脂肪酰基且第9位具有Tyr残基的线性类似物26和27与环状类似物相比具有更优异的效力,并且与PE2相比显示出相同的抗菌活性。值得注意的是, 26和27表现出显着的抗多重耐药菌能力,对蛋白酶具有良好的抗性,抗生物膜性能优异,耐药性低,对小鼠肺炎模型具有较高的有效性。本研究还初步探讨了PE2及其线性衍生物26和27的抗菌机制。如上所述, 26和27是用于治疗与耐药细菌相关的感染的有希望的候选抗菌药物。