Recent advances and perspectives in the design and development of polymyxins

Area of Science:

• Microbiology
• Pharmacology
• Drug Discovery

Background:

• Antibiotic resistance in bacterial pathogens is a growing global health crisis.
• Polymyxins, once sidelined due to toxicity, are now crucial last-resort antibiotics for multidrug-resistant Gram-negative infections.
• Understanding polymyxin properties is vital for developing safer and more effective treatments.

Purpose of the Study:

• To review advancements in polymyxin research, covering structure, activity, and toxicity.
• To explore new strategies for developing next-generation polymyxin drugs.
• To highlight novel approaches for reducing polymyxin-induced nephrotoxicity.

Main Methods:

• Literature review of polymyxin research from 1947 to early 2017, with emphasis on 2005-2017.
• Analysis of studies on polymyxin chemistry, antibacterial mechanisms, and toxicity.
• Examination of research on drug synergy, antibiofilm properties, and novel drug design.

Main Results:

• Significant progress has been made in understanding polymyxin mechanisms and properties.
• New generations of polymyxin drugs are under development.
• Modifying polymyxin scaffolds offers a promising strategy to mitigate kidney toxicity.

Conclusions:

• Polymyxins remain essential for treating challenging Gram-negative bacterial infections.
• Ongoing research focuses on optimizing polymyxin therapy by enhancing efficacy and minimizing adverse effects.
• Innovative drug design integrating metabolism and detoxification pathways holds potential for safer polymyxin analogs.