A potato plant virus becomes a superbug-killing weapon
Ghouneimy A, Chaudhary S, Tehseen M, Saleh A, Serag M
Plant Signaling
The virus that stunts potato plants in your vegetable patch turns out to be a near-perfect delivery scaffold for fighting the antibiotic-resistant infections doctors are running out of options for.
Researchers took Potato virus X, a rod-shaped virus that normally just infects potato plants, and used its shape to hold many copies of bacteria-killing peptides at once. Packed onto this plant virus scaffold, the peptides became over 9,700 times more powerful and could destroy dangerous drug-resistant bacteria in as little as 10 minutes, while barely harming human cells.
Key Findings
Displaying antimicrobial peptides on the Potato virus X scaffold boosted their killing power more than 9,700-fold compared to free peptides.
The engineered virus particles (RPG) eradicated multidrug-resistant pathogens within 10-30 minutes, outperforming vancomycin, tigecycline, and cefiderocol.
RPG remained stable and active in serum, resisted protease breakdown, and stayed effective under physiological salt conditions while showing low toxicity to mammalian cells.
chevron_right Technical Summary
Scientists turned Potato virus X, a harmless plant virus, into a scaffold that displays antibiotic-killing peptides thousands of times more effectively than the peptides alone, wiping out drug-resistant bacteria faster than last-resort antibiotics.
Abstract Preview
Original paper
Multivalent Display of Antimicrobial Peptides on Plant Virus Scaffolds Enhances Killing of Drug-Resistant Bacteria.
Multidrug-resistant (MDR) bacteria pose a significant challenge to global health. Antimicrobial peptides (AMPs) have emerged as promising candidates against MDR bacteria due to their rapid and broa...
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The potato is a starchy tuberous vegetable native to the Americas that is consumed as a staple food in many parts of the world. Potatoes are underground stem tubers of the plant Solanum tuberosum, a perennial in the nightshade family Solanaceae.