Dual AAV-mediated gene therapy restores hearing in a DFNB9 mouse model.
Omar AkilFrank DykaCharlotte CalvetAlice EmptozGhizlene LahlouSylvie NouailleJacques Boutet de MonvelJean-Pierre HardelinWilliam W HauswirthPaul AvanChristine PetitSaaid SafieddineLawrence R LustigPublished in: Proceedings of the National Academy of Sciences of the United States of America (2019)
Autosomal recessive genetic forms (DFNB) account for most cases of profound congenital deafness. Adeno-associated virus (AAV)-based gene therapy is a promising therapeutic option, but is limited by a potentially short therapeutic window and the constrained packaging capacity of the vector. We focus here on the otoferlin gene underlying DFNB9, one of the most frequent genetic forms of congenital deafness. We adopted a dual AAV approach using two different recombinant vectors, one containing the 5' and the other the 3' portions of otoferlin cDNA, which exceed the packaging capacity of the AAV when combined. A single delivery of the vector pair into the mature cochlea of Otof -/- mutant mice reconstituted the otoferlin cDNA coding sequence through recombination of the 5' and 3' cDNAs, leading to the durable restoration of otoferlin expression in transduced cells and a reversal of the deafness phenotype, raising hopes for future gene therapy trials in DFNB9 patients.
Keyphrases
- gene therapy
- mouse model
- end stage renal disease
- genome wide
- copy number
- ejection fraction
- intellectual disability
- newly diagnosed
- induced apoptosis
- chronic kidney disease
- peritoneal dialysis
- dna damage
- type diabetes
- dna repair
- autism spectrum disorder
- binding protein
- cell proliferation
- patient reported outcomes
- metabolic syndrome
- wild type
- high fat diet induced
- skeletal muscle