Nanoparticles that deliver triplex-forming peptide nucleic acid molecules correct F508del CFTR in airway epithelium

Cystic fibrosis is a lethal genetic disorder commonly caused by the F508del mutation which is not amenable to gene therapy. Here, the authors use triplex-forming PNA molecules and donor DNA in biodegradable polymer nanoparticles to correct F508del and achieve clinically relevant levels of gene editing.