Unveiling Pseudomonas aeruginosa's Survival Strategy in Lung Infections

Pseudomonas aeruginosa is a bacterium notorious for causing antibiotic-resistant lung infections, particularly in patients with conditions like cystic fibrosis or COPD. Using advanced tissue models, researchers at EPFL's Global Health Institute have unveiled how this pathogen manages the trade-off between forming protective biofilms and spreading to access nutrients. **Biofilms**, although they provide antibiotic protection, limit the bacterium's ability to move and spread. By mimicking lung environments, the study shows that P. aeruginosa switches between a static, protective biofilm state and a mobile, 'planktonic' state based on nutrient availability and environmental challenges._This insight into the bacterium's metabolic cost of biofilm formation explains how it balances growth and antibiotic tolerance._ The findings point towards new treatment strategies that could disrupt biofilm formation, making the bacterium more susceptible to existing antibiotics and targeting metabolic pathways to weaken infections._The research offers a promising avenue for combating antibiotic resistance by potentially uncovering new therapeutic targets.