The powerful antimicrobial teixobactin was discovered using a new technique that could speed up the discovery of new antibiotics to tackle resistance
Scientists have discovered a new class of antibiotic using a revolutionary procedure hailed as a game changer in the hunt for medicines to fight drug-resistant infections. The antibiotic, called teixobactin, kills a wide range of drug-resistant bacteria, including MRSA and bugs that cause TB and a host of other life-threatening infections.
It could become a powerful weapon in the battle against antimicrobial resistance, because it kills microbes by blocking their capacity to build their cell walls, making it extremely difficult for bacteria to evolve resistance.
“Teixobactin kills exceptionally well. It has the ability to rapidly clear infections,” said research leader Kim Lewis, director of the Antimicrobial Discovery Center at Northeastern University in Boston, US.
The public health threat of resistance was highlighted last year in a World Health Organisation report that warned the world was entering a “post-antibiotic era”. The UK’s chief medical officer, Sally Davies, has put antibiotic resistance on the government’s national risk register, alongside terrorist attacks and pandemic flu, and warned that without new antibiotics, more people will die after routine operations in the next 20 years. In December, a report commissioned by David Cameron warned that failure to tackle drug-resistant infections will cost the global economy up to £64tn ($100tn) by 2050.
In studies on mice, the new antibiotic wiped out infections of Staphylococcus aureus and Streptococcus pneumoniae, which can cause life-threatening blood and lung infections. It was also effective against Enterococcus, which can infect the heart, prostate, urinary tract and abdomen.
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