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Updated: Apr 28, 2026

Production and Testing of Antimicrobial Peptides and Their Mimics
Published on: April 10, 2026
Tuning the antimicrobial pharmacophore to enable discovery of short lipopeptides with multiple modes of action
Yuxin Fang1, Wenjing Zhong1, Yue Wang1
1School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, PR China.
Abstract:
Tryptophan and arginine rich antimicrobial peptides (AMPs) possess high potencies against both gram positive and gram negative bacteria, while lipopeptides represent another family of promising antimicrobial agents to combat invading pathogens. In the present study, we have synthesized a series of very short arginine, lysine and tryptophan containing lipopeptides and evaluated their antimicrobial activities against a panel of pathogenic microorganisms including Staphylococcus aureus, Escherichia coli, and Candida albicans. The results showed that most of these peptides were effective against tested strains with MIC values ranging from 3.9 to 62.5 μg/mL. In addition to the small size, potent bactericidal activity, low to moderate hemolytic toxicity and membrane disruption ability, several peptides such as C10-RIKWWK and C10-RKWWK apparently retarded the migration of DNA on agarose gel in the DNA-binding assay, which implied the multiple modes of action in their bacteria-killing mechanism. These peptides revealed a promising therapeutic potential to develop as new antimicrobial agents.
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