Antimicrobial peptides (AMPs), also known as host defense peptides, are short and generally positively charged peptides found in a wide variety of life forms from microorganisms to humans. Most AMPs have the ability to kill microbial pathogens directly, whereas others act indirectly by modulating the host defense systems. Against a background of rapidly increasing resistance development to conventional antibiotics all over the world, efforts to bring AMPs into clinical use are accelerating. Several AMPs are currently being evaluated in clinical trials as novel anti-infectives, but also as new pharmacological agents to modulate the immune response, promote wound healing, and prevent post-surgical adhesions. In this review, we provide an overview of the biological role, classification, and mode of action of AMPs, discuss the opportunities and challenges to develop these peptides for clinical applications, and review the innovative formulation strategies for application of AMPs.
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http://dx.doi.org/10.3389/fcimb.2016.00194 | DOI Listing |
Ital J Food Saf
November 2024
Mountain Research Center, Campus of Santa Apolónia, Polytechnic Institute of Bragança, Portugal.
Fresh meat is highly perishable, presenting challenges in spoilage mitigation and waste reduction globally. Despite the efforts, foodborne outbreaks from meat consumption persist. Biopreservation offers a natural solution to extend shelf life by managing microbial communities.
View Article and Find Full Text PDFFront Fungal Biol
December 2024
Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States.
The antimicrobial peptide (AMP) circularized bacteriocin enterocin AS-48 produced by sp. exhibits broad-spectrum antibacterial activity via dimer insertion into the plasma membrane to form membrane pore structures, compromising membrane integrity and leading to bactericidal activity. A specific alpha-helical region of enterocin AS-48 has been shown to be responsible for the membrane-penetrating activity of the peptide.
View Article and Find Full Text PDFHeliyon
November 2024
Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Antimicrobial peptides (AMPs) present promising alternatives for addressing bacterial and viral multidrug resistance due to their distinctive properties. Understanding the mechanisms of these compounds is essential for achieving this objective. Therefore, this comprehensive review aims to highlight primary natural sources of AMPs and elucidate various aspects of the modes of action of antiviral and antibacterial peptides (ABPs).
View Article and Find Full Text PDFArch Microbiol
January 2025
SLIIT, Malabe, Sri Lanka.
The development of new medicines with unique methods of antimicrobial action is desperately needed due to the emerging multidrug-resistant bacteria, such as methicillin-resistant Staphylococcus aureus. Therefore, antimicrobial peptoids have emerged as potential new antimicrobials. Thirteen peptoid analogues have been designed and synthesized via solid phase synthesis.
View Article and Find Full Text PDFAppl Environ Microbiol
December 2024
School of Microbiology, University College Cork, Cork, County Cork, Ireland.
Unlabelled: APC 4099, isolated from bees' gut, has been identified as a promising candidate for food biopreservation. Antimicrobial activity screening revealed a broad-spectrum inhibition potential, ranging from gram-positive pathogenic bacteria to fungi responsible for food spoilage. Genomic analysis identified biosynthetic gene clusters coding for several antimicrobial peptides and secondary metabolites.
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