Unveiling the Function of Antimicrobial Peptides in Relation to Source and Structure

Area of Science:

• Biochemistry
• Infectious Diseases
• Drug Discovery

Background:

• Antimicrobial peptides (AMPs) are vital for innate immunity, offering broad bioactivities against multi-drug-resistant (MDR) bacteria.
• Existing AMP databases categorize them by source, function, and structure, but the source-function relationship is often unclear.
• AMPs face challenges like poor stability, toxicity, and high production costs, hindering clinical translation.

Purpose of the Study:

• To clarify the relationship between AMP source and function for improved drug candidate identification.
• To establish a system for distinguishing the primary function of AMPs.
• To propose key elements for an AMP research and development pipeline.

Main Methods:

• Review and analysis of existing AMP databases and literature.
• Proposal of strategies for enhancing AMPs, including heterologous expression, modification, encapsulation, and coadministration.
• Focus on improving yield, stability, and safety of AMPs.

Main Results:

• Insufficient evidence currently supports the direct utilization of the source-function relationship in AMP development.
• Key challenges hindering AMP clinical application identified as unclear primary function, weak stability, toxicity, and production costs.
• A framework for AMP R&D pipeline focusing on yield, stability, and safety was proposed.

Conclusions:

• Clarifying the AMP source-function relationship and establishing a primary function identification system are crucial for advancing AMP drug development.
• Strategies like heterologous expression, modification, encapsulation, and coadministration are essential for overcoming AMP limitations.
• The proposed R&D pipeline elements aim to accelerate the clinical application of novel AMP-based antimicrobial agents.