Production and Testing of Antimicrobial Peptides and Their Mimics

Antimicrobial peptides (AMPs) and their synthetic mimics are emerging as promising alternatives to conventional antibiotics, particularly in response to the growing threat of antimicrobial resistance. Naturally occurring AMPs are essential components of the innate immune system and display broad-spectrum activity against diverse microbial pathogens, while their synthetic mimics, including peptidomimetics and polymer-based analogs, are designed to enhance stability, reduce toxicity, and improve pharmacokinetics. This study aims to demonstrate the production, characterization, and biological evaluation of AMPs and small-molecule peptide mimics. AMPs are generated using recombinant expression systems or solid-phase peptide synthesis, enabling precise control over amino acid sequence and structural properties. Small-molecule peptide mimics are synthesized using chemical strategies, including an anthranilic acid (2-aminobenzoic acid) scaffold to enhance structural stability and pharmacological performance. Following synthesis, compounds are purified and chemically characterized prior to biological testing. Antimicrobial activity is evaluated using in vitro minimum inhibitory concentration (MIC) assays, and cytotoxicity is assessed against mammalian cell lines to determine selectivity. Representative results demonstrate that both AMPs and their mimics exhibit potent activity against Klebsiella pneumoniae and Escherichia coli, highlighting their broad-spectrum antibacterial potential. Overall, this protocol provides a comprehensive and reproducible framework for the development and systematic evaluation of antimicrobial peptides and their mimics as next-generation anti-infective agents.