Antibacterial Activity of Cysteine-Derived Cationic Dipeptides

Yu Cheng Tsai, Chen Chi Tang, Hsu Heng Wu, Yu Shiang Wang, Yu Fon Chen

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)


Antibiotic resistance is a growing problem, especially in the treating of life-threatening diseases like sepsis. One way to address such an issue is with the use of antimicrobial peptides, which can kill many types of bacteria by disrupting cellular targets (such as membranes) through electrostatic interaction. In this report, cysteine-derived cationic dipeptides lysine–cysteine (KC), arginine–cysteine (RC) and histidine–cysteine (HC) were used to evaluate antibacterial activity against Gram-negative and positive bacteria. The dipeptides exhibited bacterial membrane rupture capabilities under SEM observation after treatment with IC50 conditions, as well as low cytotoxicity and hemolytic activity toward normal cell lines and human red blood cells (RBCs) at IC50. Furthermore, the dipeptides significantly ameliorated Enterohaemorrhagic E. coli (EHEC)-induced lethality in Caenorhabditis elegans in a dose-dependent manner. These cysteine-derived cationic dipeptides may provide a novel alternative therapy in combating bacterial infection.

頁(從 - 到)1107-1114
期刊International Journal of Peptide Research and Therapeutics
出版狀態Published - 2020 六月 1

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Bioengineering
  • Biochemistry
  • Molecular Medicine
  • Drug Discovery

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