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April 13, 2022 02:02 am

Researchers Create Bacteria That Could Protect Your Gut From Antibiotics

In a new study published in the journal Nature Biomedical Engineering, researchers from Harvard and MIT detail work they've done on a "living cellular therapeutic device" that promises to protect humans from the harmful side effects antibiotics can have on our guts. Engadget reports: Per Science Daily, they modified a strain of bacteria that is frequently used in cheese production to deliver an enzyme that can break down beta-lactam antibiotics. Many of the most commonly prescribed antibiotics in the US, including penicillin, fall under that family. Using gene editing, they further modified how their bacterium synthesizes the enzyme to prevent it from transferring that capability to other bacteria. The result is a treatment that reduces the harmful effects of antibiotics while still allowing those drugs to do their work. In a study involving mice, the researchers found their bacteria "significantly" reduced the damage ampicillin did to the test subject's gut microbes and allowed those communities to recover fully after just three days. By contrast, in mice that only received the antibiotic, the researchers saw a much greater loss of microbial diversity. "We are now focusing on getting these living therapies to patients and are finalizing the design of an effective, short, and inexpensive clinical trial," said Andres Cubillos-Ruiz, the lead author of the study.

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