The abstract is read at the publisher; the summary is JClub's.
CHCha-10, an amino acid-derived ionizable lipid, enables inhaled mRNA base editing in the lung, restoring CFTR expression and chloride channel function in cystic fibrosis mice.
- Why it matters: Pulmonary delivery has limited CRISPR-based editing for lung disorders, so a biocompatible, efficient delivery system for RNA editors is needed.
- What they did: The team synthesized 960 ionizable lipids from diverse α-amino acid backbones, screened them, and selected CHCha-10 for biodegradable nanoparticle delivery of adenine base editor mRNA and CFTR G542X guide RNA.
- The result: After intratracheal administration, CHCha-10 nanoparticles improved mucus penetration and epithelial transfection in mice and ferrets, and inhalation achieved in vivo base editing that restored CFTR expression and chloride channel function in G542X human airway epithelial cells, mouse-derived intestinal organoids, and cystic fibrosis mouse lungs.
The findingWhy it mattersWhat they didThe result
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