Cited by 24Retinal Development and DisordersVirus-based gene therapy researchRNA Interference and Gene Delivery

Rod Outer Segment Development Influences AAV-Mediated Photoreceptor Transduction After Subretinal Injection

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Petit, Lolita, Ma, Shan, Cheng, Shun-Yun, Gao, Guangping, Punzo, Claudio·2017·Human Gene Therapy

Abstract

Vectors based on the adeno-associated virus (AAV) are currently the preferred tools for delivering genes to photoreceptors (PR) in small and large animals. AAVs have been applied successfully in various models of PR dystrophies. However, unknown barriers still limit AAV's efficient application in several forms of severe PR degenerations due to insufficient transgene expression and/or treated cells at the time of injection. Optimizations of PR gene therapy strategies will likely benefit from the identification of the cellular factors that influence PR transduction. Interestingly, recent studies have shown that the AAV transduction profile of PRs differs significantly between neonatal and adult mouse retinas after subretinal injection. This phenomenon may provide clues to identify host factors that influence the efficiency of AAV-mediated PR transduction. This study demonstrates that rod outer segments are critical modulators of efficient AAV-mediated rod transduction. During retinal development, rod transduction correlated temporally and spatially with the differentiation order of PRs when vectors were introduced subretinally but not when introduced intravitreally. All subretinally injected vectors had an initial preference to transduce cones in the absence of formed rod outer segments and then displayed a preference for rods as the cells matured, independently of the expression cassette or AAV serotype. Consistent with this observation, altered development of rod outer segments was associated with a strong reduction of rod transduction and an increase in the percentage of transduced cones by 2- to 2.8-fold. A similar increase of cone transduction was observed in the adult retinal degeneration 1 ( rd1 ) retina compared to wild-type mice. These results suggest that the loss of rod outer segments in diseased retinas could markedly affect gene transfer efficiency of AAV vectors by limiting the ability of AAVs to infect dying rods efficiently. This information could be exploited for the development of more efficient AAV-based PR gene delivery procedures.

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  • Access to and quality of donor human fetal material limits the application for many researchers.

    “However, the access to and quality of the donor human fetal material limits the application for many researchers [62,299,300].”

    From Recombinant Adeno-Associated Viral Vectors (rAAV)-Vector Elements in Ocular Gene Therapy Clinical Trials and Transgene Expression and Bioactivity Assays (2020) · cites this paper as [299]

    The Materials and Methods passages describe mouse retinal explants and other experimental materials, while the Discussion addresses factors affecting photoreceptor transduction. Neither addresses access to or quality of donor human fetal material (searched: human fetal material, donor access and quality, fetal human retina). (LLM, conf=0.74)

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Authors
Petit, L., Ma, S., Cheng, S.-Y., Gao, G., & Punzo, C.
Affiliations
University of Massachusetts Chan Medical School (US)
Corresponding author
Punzo, Claudio
Venue
Human Gene Therapy
Published
2017-06
Volume
28
Issue
6
Pages
464-481
ISSN
  • 1043-0342 (ISSN-L)
  • 1557-7422
OpenAlex
W2616731639
Cited by
24
References
90
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2022: 1 · 2021: 4 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 3
FWCI
1.34
Type
journal article
Language
en
Open access
Locations
  • Human Gene Therapy (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@UMassChan (submittedVersion, cc-by)
Funders
  • University of Massachusetts
  • Fondation de France
  • National Institutes of Health
  • University of Massachusetts Medical School
  • National Heart, Lung, and Blood Institute (P01HL131471)
  • National Eye Institute (R21EY030166, R01EY023570)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
adeno-associated virus vectors, phototransduction, rod outer segments, subretinal injection, retinal development, rod photoreceptors, cone photoreceptors, rd1 mouse, AAV serotypes, intravitreal injection, photoreceptor degeneration
MeSH terms
Dependovirus, Animals, Cell Differentiation, Cricetulus, Cytomegalovirus, Disease Models, Animal, Genetic Engineering, Genetic Vectors, Mice, Transgenic, Organ Specificity, Promoter Regions, Genetic, Retinal Degeneration, Rod Cell Outer Segment, Transduction, Genetic, CHO Cells, Genes, Reporter, Retinal Cone Photoreceptor Cells, Green Fluorescent Proteins, Mice, Injections, Intraocular, Intravitreal Injections

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