Cited by 103Virus-based gene therapy researchRetinal Development and DisordersRNA Interference and Gene Delivery

Efficient gene delivery to the cone-enriched pig retina by dual AAV vectors

Colella, P, Trapani, I, Cesi, G, Sommella, A, Manfredi, A, Puppo, A, Iodice, C, Rossi, S +4 more·2014·Gene Therapy

Abstract

Gene therapy with adeno-associated viral (AAV) vectors is limited by AAV cargo capacity that prevents their application to the inherited retinal diseases (IRDs), such as Stargardt disease (STGD) or Usher syndrome type IB (USH1B), which are due to mutations in genes larger than 5 kb. Trans-splicing or hybrid dual AAV vectors have been successfully exploited to reconstitute large gene expression in the mouse retina. Here, we tested them in the large cone-enriched pig retina that closely mimics the human retina. We found that dual AAV trans-splicing and hybrid vectors transduce pig photoreceptors, the major cell targets for treatment of IRDs, to levels that were about two- to threefold lower than those obtained with a single AAV vector of normal size. This efficiency is significantly higher than that in mice, and is potentially due to the high levels of dual AAV co-transduction we observe in pigs. We also show that subretinal delivery in pigs of dual AAV trans-splicing and hybrid vectors successfully reconstitute, albeit at variable levels, the expression of the large genes ABCA4 and MYO7A mutated in STGD and USH1B, respectively. Our data support the potential of dual AAV vectors for large gene reconstitution in the cone-enriched pig retina that is a relevant preclinical model.

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Crossref · 10.1038/gt.2014.8

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  • Subretinal administration of AAV2/8 using transsplicing and hybrid vector strategies has shown efficient retinal pigment epithelium and photoreceptor transduction.

    “Subretinal administration of AAV2/8 using transsplicing and hybrid vector strategies has shown efficient retinal pigment epithelium and photoreceptor transduction [29,30,101].”

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Authors
Colella, P., Trapani, I., Cesi, G., Sommella, A., Manfredi, A., Puppo, A., Iodice, C., Rossi, S., Simonelli, F., Giunti, M., Bacci, M. L., & Auricchio, A.
Affiliations
  • Telethon Institute Of Genetics And Medicine (IT)
  • University of Campania "Luigi Vanvitelli" (IT)
  • University of Bologna (IT)
  • Federico II University Hospital (IT)
Corresponding author
Auricchio, A
Venue
Gene Therapy
Published
2014-02-27
Volume
21
Issue
4
Pages
450-456
ISSN
  • 0969-7128 (ISSN-L)
  • 1476-5462
OpenAlex
W1974191021
Cited by
103
References
55
Citations by year
2026: 5 · 2025: 4 · 2024: 4 · 2023: 11 · 2022: 8 · 2021: 9 · 2020: 12 · 2019: 11 · 2018: 8 · 2017: 13 · 2016: 4 · 2015: 7 · 2014: 7
FWCI
6.79
Type
journal article
Language
en
Open access
closed
Locations
  • Gene Therapy (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • Archivio Istituzionale della Ricerca - Università degli Studi della Campania "Luigi Vanvitelli" (submittedVersion)
Funders
  • U.S. Public Health Service (R24 RY019861-01A)
  • National Eye Institute (R24EY019861)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
trans-splicing, gene delivery, pig retina, inherited retinal disease, Stargardt disease, ABCA4, MYO7A, subretinal delivery, photoreceptors, preclinical models
MeSH terms
Stargardt Disease, Myosin VIIa, Dependovirus, Animals, Gene Expression Regulation, Genetic Vectors, Humans, Macular Degeneration, Myosins, Photoreceptor Cells, Genetic Therapy, Gene Transfer Techniques, ATP-Binding Cassette Transporters, Sus scrofa, Mice, Usher Syndromes

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