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Old antibiotics are being revived to fight new threats

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BacteriaAntibiotic resista…Antimicrobial pept…
Old antibiotics are being revived to fight new threats

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Scientists are revisiting antimicrobial peptides, a class of antibiotics that has not seen new drug development in several decades. The rise of drug-resistant bacteria has prompted renewed interest in these compounds as potential therapeutic agents. Researchers are re-examining their mechanisms and clinical viability in the context of the current antimicrobial resistance crisis.


Antimicrobial resistance is a growing global health threat responsible for millions of deaths annually, and identifying viable drug candidates from previously overlooked compound classes could expand the treatment arsenal. Reviving and optimizing older antimicrobial peptides may offer a faster development pathway compared to discovering entirely novel antibiotic classes.


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Antibiotic resistance 13 articles Explore Concept → Bacteria Concept coming soon Antimicrobial peptides Concept coming soon

Nature, Published online: 13 May 2026; doi:10.1038/d41586-026-01379-x

The last antimicrobial peptide was developed decades ago. Now, drug-resistant bacteria are forcing scientists to take a fresh look at this class of antibiotic.

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