Gut bacteria create immune-boosting compounds when exposed to tetracyclines

Gut bacteria produce immune-boosting compounds when exposed to tetracycline antibiotics. Researchers found that Bacteroides dorei, a common gut bacterium, secretes new compounds called doreamides and N-acyladenosines in response to low doses of tetracyclines. These compounds stimulate human immune cells and inhibit the growth of pathogenic bacteria. This discovery reveals a secondary effect of antibiotics, suggesting they can also positively influence the host's immune system and gut microbiome composition. Further studies are planned to explore the therapeutic potential of doreamides.