高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (1): 20240334.doi: 10.7503/cjcu20240334

• 研究论文 • 上一篇    下一篇

阳离子聚氨基酸的合成及抗菌性能

段雨秀1,2, 万朋奇2, 高郭文猎2, 张文龙2, 邓明虓1(), 肖春生2()   

  1. 1.东北师范大学化学学院, 长春 130024
    2.中国科学院长春应用化学研究所生态环境高分子材料重点实验室, 长春 130022
  • 收稿日期:2024-07-03 出版日期:2025-01-10 发布日期:2024-08-19
  • 通讯作者: 邓明虓,肖春生 E-mail:dengmx330@nenu.edu.cn;xiaocs@ciac.ac.cn
  • 基金资助:
    国家优秀青年科学基金(52222307);吉林省科技厅青年成长科技项目(20230508153RC)

Synthesis and Antibacterial Efficacy of Cationic Polypeptides

DUAN Yuxiu1,2, WAN Pengqi2, GAOGUO Wenlie2, ZHANG Wenlong2, DENG Mingxiao1(), XIAO Chunsheng2()   

  1. 1.Faculty of Chemistry,Northeast Normal University,Changchun 130024,China
    2.Key Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2024-07-03 Online:2025-01-10 Published:2024-08-19
  • Contact: DENG Mingxiao, XIAO Chunsheng E-mail:dengmx330@nenu.edu.cn;xiaocs@ciac.ac.cn
  • Supported by:
    the National Science Fund for Excellent Young Scholars of China(52222307);the Youth Growth Technology Project of Jilin Provincial Department of Science and Technology, China(20230508153RC)

摘要:

制备了一系列具有不同侧基结构的阳离子聚氨基酸(PALG n )材料. 这种阳离子聚氨基酸在体外均显示出一定的抗菌活性. 其中, 疏水基团比例为10%, 疏水基团为正丁基结构的PALG20-Bu1表现出最佳的抗菌性能, 对金黄色葡萄球菌(S. aureus)和大肠杆菌(E. coli)的最小抑菌浓度(MIC)为12.5 μg/mL. 进一步的机理研究表明, PALG20-Bu1能够有效破坏细菌细胞膜的完整性, 导致细菌死亡. 由于这种独特的抗菌机制, PALG20-Bu1表现出快速的杀菌动力学. 本文工作为治疗临床细菌感染提供了一种新策略.

关键词: 细菌感染, 细菌耐药性, 聚氨基酸, 抗菌高分子

Abstract:

A series of cationic poly(α-amino acid)s(PALGn) materials with different side group structures was synthesized. The synthesized cationic poly(α-amino acid)s exhibited certain antibacterial activity in vitro. Among them, poly(γ-allyl-L-glutamate)20-butyl1(PALG20-Bu1) with the optimal ratio of cationic/hydrophobic group ratio showed the best antibacterial ability, with a minimum inhibitory concentration(MIC) of 12.5 μg/mL against Staphylococcus aureusS. aureus) and Escherichia coliE. coli.). Further mechanistic studies indicated that PALG20-Bu1 could effectively disrupt the integrity of bacterial cell membranes, leading to bacterial death. Due to this unique antibacte-rial mechanism, PALG20-Bu1 exhibited rapid bactericidal kinetics. In summary, this work proposes a promising strategy for the treatment of clinical bacterial infections.

Key words: Bacterial infection, Bacterial resistance, Poly(α-amino acid)s, Antibacterial polymer

中图分类号: 

TrendMD: