Cited by 59Virus-based gene therapy researchRetinal Development and DisordersRetinal Diseases and Treatments

Helper-Dependent Adenovirus for the Gene Therapy of Proliferative Retinopathies: Stable Gene Transfer, Regulated Gene Expression and Therapeutic Efficacy

Lamartina, Stefania, Cimino, Monica, Roscilli, Giuseppe, Dammassa, Ernesta, Lazzaro, Domenico, Rota, Rossella, Ciliberto, Gennaro, Toniatti, Carlo·2007·The Journal of Gene Medicine

Abstract

Background: Ocular neovascular disorders, such as diabetic retinopathy and age‐related macular degeneration, are the principal causes of blindness in developed countries. Current treatments are of limited efficacy, whereas a therapy based on intraocular gene transfer of angiostatic factors represents a promising alternative. For the first time we have explored the potential of helper‐dependent adenovirus (HD‐Ad), the last generation of Ad vectors, in the therapy of retinal neovascularization. Methods: We first analyzed efficiency and stability of intraretinal gene transfer following intravitreous injection in mice. A HD‐Ad vector expressing green fluorescent protein (GFP) under the control of the cytomegalovirus (CMV) promoter (HD‐Ad/GFP) was compared with a first‐generation (E1/E3‐deleted) Ad vector carrying an identical GFP expression cassette (FG‐Ad/GFP). We also constructed HD‐Ad vectors expressing a soluble form of the VEGF receptor (sFlt‐1) in a constitutive (HD‐Ad/sFlt‐1) or doxycycline (dox)‐inducible (HD‐Ad/S‐M2/sFlt‐1) manner and tested their therapeutic efficacy upon intravitreous delivery in a rat model of oxygen‐induced retinopathy (OIR). Results: HD‐Ad/GFP promoted long‐lasting (up to 1 year) transgene expression in retinal Müller cells, in marked contrast with the short‐term expression observed with FG‐Ad/GFP. Intravitreous injection of HD‐Ad vectors expressing sFlt‐1 resulted in detectable levels of sFlt‐1 and inhibited retinal neovascularization by more than 60% in a rat model of OIR. Notably, the therapeutic efficacy of the inducible vector HD‐Ad/S‐M2/sFlt‐1 was strictly dox‐dependent. Conclusions: HD‐Ad vectors enable stable gene transfer and regulated expression of angiostatic factors following intravitreous injection and thus are attractive vehicles for the gene therapy of neovascular diseases of the retina. Copyright © 2007 John Wiley & Sons, Ltd.

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Crossref · 10.1002/jgm.1083

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  • HdAd promoted long-lasting (up to one year) transgene expression in the retina, whereas FGAd-mediated expression decreased after two months due to immune response-related clearance.

    “HdAd promoted a long-lasting (up to one year) transgene expression in the retina, whereas the FGAd-mediated expression decreased after two months due to immune response-related clearance [92].”

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Authors
Lamartina, S., Cimino, M., Roscilli, G., Dammassa, E., Lazzaro, D., Rota, R., Ciliberto, G., & Toniatti, C.
Affiliations
  • IRBM (IT)
  • CEINGE Biotecnologie Avanzate Franco Salvatore (Italy) (IT)
  • Bambino Gesù Children's Hospital (IT)
Corresponding author
Toniatti, Carlo
Venue
The Journal of Gene Medicine
Publisher
Wiley
Published
2007-08-09
Volume
9
Issue
10
Pages
862-874
ISSN
  • 1099-498X (ISSN-L)
  • 1521-2254
OpenAlex
W2132484398
Cited by
59
References
72
Citations by year
2026: 2 · 2025: 2 · 2023: 1 · 2022: 5 · 2021: 1 · 2020: 1 · 2019: 3 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 5 · 2014: 4 · 2013: 1 · 2012: 3
FWCI
3.05
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Gene Medicine (publishedVersion)
  • PubMed (publishedVersion)
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
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
Keywords
helper-dependent adenovirus, ocular gene therapy, retinal neovascularization, proliferative retinopathy, diabetic retinopathy, age-related macular degeneration, oxygen-induced retinopathy, intravitreal injection, doxycycline-inducible expression, Müller cells, angiostatic factors, stable gene transfer
MeSH terms
Adenoviridae, Animals, Hypoxia, Doxycycline, Gene Expression Regulation, Genetic Vectors, Helper Viruses, Humans, Retina, Genetic Therapy, Retinal Neovascularization, Rats, Sprague-Dawley, Gene Transfer Techniques, Models, Animal, Vascular Endothelial Growth Factor Receptor-1, Vascular Endothelial Growth Factor A, Green Fluorescent Proteins, Mice, Rats

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