The nose knows how to kill MRSA – Nature

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A new antibiotic was right under our noses—or rather, in them. Produced by a bacterium living in the human nose, the molecule kills the potentially deadly methicillin-resistant Staphylococcus aureus (MRSA) in mice and rats. When Andreas Peschel and his team stumbled upon lugdunin, they weren’t looking for a new antibiotic. They were studying S. aureus in its natural environment, the human nose. “If you want to keep the bacteria in check, you need to understand their lifestyle,” he says. “And to understand that, we also looked at its competitors.”