LL-37 peptide Antimicrobial cyclic peptides are emerging as a significant force in the fight against increasingly prevalent bacterial infections, offering a novel class of compounds with potent antibacterial and antifungal activities. These molecules, characterized by their unique ring-like structure, are gaining attention as potential alternatives to conventional antibiotics, particularly in light of rising antibiotic resistance. Their inherent stability, often enhanced by the cyclization process, coupled with reduced toxicity and increased efficacy, positions them as promising candidates for therapeutic applications, including wound healing and the treatment of complex infections like those caused by Borrelia.作者：S Mitra·2025·被引用次数：7—Cyclization of peptides can confer several advantages, includingenhanced stability to proteolysis, decreased toxicity and increased bactericidal efficacy. This ...
The defining feature of antimicrobial cyclic peptides is their closed-loop amino acid sequence. This structural characteristic confers several critical advantages over their linear counterparts.Antimicrobial peptides (AMP)represent ancient defense molecules widespread in all life forms, from multicellular organisms to bacterial cells, that play a ... Cyclization significantly enhances stability against proteolysis, meaning these peptides are less likely to be degraded by enzymes in the body, thus prolonging their duration of action.Interaction of the Cyclic Antimicrobial Cationic Peptide ... Furthermore, this structural rigidity can lead to decreased toxicity to host cells while simultaneously boosting their bactericidal efficacy. This improved profile makes them attractive for drug development, aiming to overcome the limitations of existing antimicrobial agents.2025年9月10日—A powerful database search engine for natural, synthetic, and predicted AMPs: You can search forpeptideinfo using APD ID,peptidename, source ...
Antimicrobial cyclic peptides are found in nature, often produced as secondary metabolites by various organisms, including marine life. These natural sources have provided a rich wellspring of inspiration and discovery for novel antimicrobial compounds作者：M Wu·1999·被引用次数：462—Thus we conclude thatcyclic bactenecin kills cells in a completely different wayto the other antimicrobial peptides, which have been proposed to act on the .... Alongside natural discovery, significant advancements have been made in the synthetic chemistry of cyclic antimicrobial peptides. Researchers are actively developing sophisticated strategies to synthesize these complex molecules, allowing for precise control over their structure and function. This synthetic approach is crucial for optimizing their therapeutic properties, tailoring them for specific applications, and overcoming challenges in natural sourcingCyclic Peptides as Novel Therapeutic Microbicides.
The mechanisms by which antimicrobial cyclic peptides exert their effects are varied and continue to be an active area of research. Many operate by disrupting bacterial cell membranes, a mode of action that is generally less prone to the development of resistance compared to traditional antibiotics. Some cyclic peptides, like cyclic bactenecin, exhibit unique killing mechanisms that differ from other antimicrobial peptides. Their ability to form complex macromolecular assemblies and interact with membranes, often facilitated by an amphipathic structure and positively charged residues, contributes to their potent antimicrobial activity.
The therapeutic applications for these peptides are broad and expanding.作者：Z Pei·2025·被引用次数：5—The cyclic peptide C-LR18 hashigher antibacterial activity and stabilityand a longer half-life than LR18 in rats in vitro and in vivo. Beyond their direct use in treating pathogenic bacterial infections, their role in wound healing is being explored. Their effectiveness against specific pathogens, such as *Staphylococcus aureus* and *Borrelia* species, highlights their potential in combating difficult-to-treat diseasesAntimicrobial Cyclic Peptidomimetics - Luo. Moreover, their use in combination with existing antibiotics is being investigated as a strategy to combat multidrug-resistant pathogens, offering a synergistic approach to infection control.
The field of antimicrobial cyclic peptides is dynamic, with ongoing research focusing on improving their properties and expanding their therapeutic reach.2025年9月10日—A powerful database search engine for natural, synthetic, and predicted AMPs: You can search forpeptideinfo using APD ID,peptidename, source ... Efforts are directed towards developing novel synthetic cyclic peptides and peptidomimetics with enhanced specificity, stability, and reduced toxicity.DBAASP: Antimicrobial Peptide Database The potential for these molecules to serve as a new generation of antibiotics is significant, offering hope against the growing threat of antimicrobial resistance. However, challenges remain in their large-scale synthesis, formulation, and clinical translation. Continued research into their mechanisms of action, pharmacokinetic profiles, and potential long-term effects will be crucial for their successful integration into clinical practice. As our understanding deepens, antimicrobial cyclic peptides are poised to play an increasingly vital role in safeguarding human and animal health against microbial threats.
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