Peptides Reduce Bacterial Growth in Cystic Fibrosis Airway Models

Scientists at the University of Geneva (UNIGE) have identified a key mechanism behind the chronic bacterial infections that afflict patients with cystic fibrosis (CF), one of Switzerland’s most common genetic disorders. The research shows that the disease’s hallmark airway barrier dysfunction is driven by the abnormal activation of the protein connexin 43. When over‑expressed, connexin 43 disrupts cellular organization within the airway epithelium, weakening tight junctions and compromising the protective barrier that normally prevents bacterial invasion.

The study, published in a peer‑reviewed journal, demonstrates that targeting connexin 43 activity could restore epithelial integrity and reduce infection rates in CF patients. By clarifying how this protein contributes to airway vulnerability, the findings open a new avenue for therapeutic intervention and may improve long‑term outcomes for those suffering from this debilitating disease.