August 3rd, 2024

New compound found to be effective against 'flesh-eating' bacteria

Researchers at Washington University developed GmPcide, a new antibiotic effective against gram-positive bacteria, including drug-resistant strains. It shows promise in treating severe infections and has low resistance potential.

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New compound found to be effective against 'flesh-eating' bacteria

Researchers at Washington University School of Medicine have developed a new compound, GmPcide, that shows effectiveness against gram-positive bacteria, including those responsible for severe infections like necrotizing fasciitis, commonly known as "flesh-eating" disease. This compound could represent a new class of antibiotics, addressing the growing issue of antibiotic resistance. The study, published in Science Advances, demonstrated that GmPcide effectively cleared bacterial infections in mice, significantly improving their health metrics compared to untreated subjects. The compound targets various pathogenic bacteria, including strains that cause drug-resistant staph infections and toxic shock syndrome.

The research team, led by Scott Hultgren, Michael Caparon, and Fredrik Almqvist, initially aimed to create a compound to prevent bacterial biofilms on catheters but discovered its broader antimicrobial properties. GmPcides were found to disrupt bacterial cell membranes, increasing their permeability and reducing their virulence, which aids in faster healing of infected tissues. Importantly, the compound appears to have a low potential for developing drug-resistant strains.

While the path to clinical application remains long, the researchers have patented GmPcide and licensed it to QureTech Bio for further development. This interdisciplinary collaboration highlights the need for innovative solutions to combat the rising threat of multi-drug-resistant bacterial infections, which pose significant health risks globally.

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By @kylehotchkiss - 5 months
“One of the jobs of a membrane is to exclude material from the outside," Caparon said. "We know that within five to ten minutes of treatment with GmPcide, the membranes start to become permeable and allow things that normally should be excluded to enter into the bacteria, which suggests that those membranes have been damaged."

I wonder if this is a mechanism that won’t easily be adapted around. It also sounds like a cool technique to deliver other molecules to kill pathogens more broadly.