Cited by 69Virus-based gene therapy researchRNA Interference and Gene DeliveryNeurogenetic and Muscular Disorders Research

Viral serotype and the transgene sequence influence overlapping adeno‐associated viral (AAV) vector‐mediated gene transfer in skeletal muscle

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Ghosh, Arkasubhra, Yue, Yongping, Duan, Dongsheng·2006·The Journal of Gene Medicine

Abstract

Background: The overlapping approach was developed recently to expand the adeno‐associated viral (AAV) packaging capacity. In this approach, a gene is split into two partially overlapping fragments and separately packaged into an upstream and a downstream vector, respectively. Transgene expression is achieved in co‐infected cells after homologous recombination. Despite the promising proof‐of‐principle results in the lung, the efficiency has been very disappointing in skeletal muscle. Here we examined two potential rate‐limiting factors including AAV serotype and the transgene sequence. Methods: To study serotype effect, we delivered AAV‐2, ‐5 and ‐6 overlapping vectors (5 × 10 8 vg particles of the upstream and the downstream vectors, respectively) and 5 × 10 8 vg particles of the intact gene vector to the tibialis anterior muscles of 7‐week‐old C57Bl/6 mice, respectively. To determine the effect of transgene sequence, we compared LacZ and alkaline phosphatase (AP) overlapping vectors. Transduction efficiency was quantified 6 weeks later by scoring the percentage of transgene‐positive myofibers. Results: AAV‐2 overlapping vectors barely resulted in detectable transduction. Transduction efficiency was significantly improved in AAV‐5 and AAV‐6. The highest level was achieved in AAV‐6 that reached 42% and 96% of that of the intact gene vector for the LacZ gene and the AP gene, respectively. Surprisingly, AAV‐6 overlapping vector resulted in higher transduction than did AAV‐2 and AAV‐5 intact gene vectors. Conclusions: Our findings suggest that AAV serotype and the transgene sequence play critical roles in the overlapping approach. AAV‐6 holds great promise for overlapping vector‐mediated muscle gene therapy. Copyright © 2005 John Wiley & Sons, Ltd.

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Crossref · 10.1002/jgm.835

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Authors
Ghosh, A., Yue, Y., & Duan, D.
Affiliations
University of Missouri (US)
Corresponding author
Duan, Dongsheng
Venue
The Journal of Gene Medicine
Publisher
Wiley
Published
2005-12-29
Volume
8
Issue
3
Pages
298-305
ISSN
  • 1099-498X (ISSN-L)
  • 1521-2254
OpenAlex
W2084129972
Cited by
69
References
47
Citations by year
2026: 1 · 2025: 4 · 2024: 1 · 2023: 2 · 2021: 2 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 1 · 2016: 1 · 2015: 5 · 2014: 7 · 2013: 6 · 2012: 2
FWCI
2.70
Type
journal article
Language
en
Open access
Locations
  • The Journal of Gene Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR49419, R01AR049419)
Topics
  • 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
  • Health Sciences › Medicine › Genetics › Neurogenetic and Muscular Disorders Research
Keywords
adeno-associated virus, AAV2, skeletal muscle gene transfer, homologous recombination, transduction efficiency, tibialis anterior, alkaline phosphatase, lacZ reporter
MeSH terms
Adenoviridae, Alkaline Phosphatase, Animals, Genes, Overlapping, Genetic Vectors, Lac Operon, Male, Mice, Inbred C57BL, Plasmids, Serotyping, Transduction, Genetic, Gene Transfer Techniques, Muscle, Skeletal, Transgenes, Muscular Dystrophy, Duchenne, Mice, In Vitro Techniques

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