Cited by 99Virus-based gene therapy researchNeurogenetic and Muscular Disorders ResearchMuscle Physiology and Disorders

AAV.Dysferlin Overlap Vectors Restore Function in Dysferlinopathy Animal Models

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Sondergaard, Patricia C., Griffin, Danielle A., Pozsgai, Eric R., Johnson, Ryan W., Grose, William E., Heller, Kristin N., Shontz, Kim M., Montgomery, Chrystal L. +5 more·2015·Annals of Clinical and Translational Neurology

Abstract

OBJECTIVE: Dysferlinopathies are a family of untreatable muscle disorders caused by mutations in the dysferlin gene. Lack of dysferlin protein results in progressive dystrophy with chronic muscle fiber loss, inflammation, fat replacement, and fibrosis; leading to deteriorating muscle weakness. The objective of this work is to demonstrate efficient and safe restoration of dysferlin expression following gene therapy treatment. METHODS: Traditional gene therapy is restricted by the packaging capacity limit of adeno-associated virus (AAV), however, use of a dual vector strategy allows for delivery of over-sized genes, including dysferlin. The two vector system (AAV.DYSF.DV) packages the dysferlin cDNA utilizing AAV serotype rh.74 through the use of two discrete vectors defined by a 1 kb region of homology. Delivery of AAV.DYSF.DV via intramuscular and vascular delivery routes in dysferlin deficient mice and nonhuman primates was compared for efficiency and safety. RESULTS: Treated muscles were tested for dysferlin expression, overall muscle histology, and ability to repair following injury. High levels of dysferlin overexpression was shown for all muscle groups treated as well as restoration of functional outcome measures (membrane repair ability and diaphragm specific force) to wild-type levels. In primates, strong dysferlin expression was demonstrated with no safety concerns. INTERPRETATION: Treated muscles showed high levels of dysferlin expression with functional restoration with no evidence of toxicity or immune response providing proof of principle for translation to dysferlinopathy patients.

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  • Overlapping vectors work particularly well in muscle tissue, ameliorating phenotypes linked to Duchenne muscular dystrophy and dysferlinopathies.

    “This strategy was shown to work particularly well in muscle tissue, ameliorating phenotypes linked to Duchenne muscular dystrophy (DMD) [43][44][45] and dysferlinopathies [46][47][48].”
  • Two overlapping AAV vectors encoding a dysferlin expression cassette produced high levels of muscle transduction.

    “the authors found high levels of muscle transduction with two overlapping AAV vectors encoding a dysferlin expression cassette ( dysferlin has a cDNA size of 6.5 kb and the overlap between the two vectors was * 1kb). 44”

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  1. Illa I Serrano-Munuera C Gallardo E Distal anterior compartment myopathy: a dysferlin mutation causing a new muscular dystrophy phenotype Ann Neurol 2001 49 130 134 11198284

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Authors
Sondergaard, P. C., Griffin, D. A., Pozsgai, E. R., Johnson, R. W., Grose, W. E., Heller, K. N., Shontz, K. M., Montgomery, C. L., Liu, J., Clark, K. R., Sahenk, Z., Mendell, J. R., & Rodino‐Klapac, L. R.
Affiliations
Nationwide Children's Hospital (US)
Corresponding author
Rodino‐Klapac, Louise R.
Venue
Annals of Clinical and Translational Neurology
Publisher
Wiley
Published
2015-01-20
Volume
2
Issue
3
Pages
256-270
ISSN
2328-9503 (ISSN-L)
OpenAlex
W2091504719
Cited by
99
References
57
Citations by year
2026: 6 · 2025: 8 · 2024: 8 · 2023: 11 · 2022: 5 · 2021: 10 · 2020: 7 · 2019: 9 · 2018: 5 · 2017: 18 · 2016: 7 · 2015: 4
FWCI
7.79
Type
journal article
Language
en
Open access
Locations
  • Annals of Clinical and Translational Neurology (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • Jain Foundation (932013)
  • Nationwide Children's Hospital
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Health Sciences › Medicine › Genetics › Neurogenetic and Muscular Disorders Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
dysferlinopathy, dysferlin, adeno-associated virus vectors, muscular dystrophy, muscle regeneration, membrane repair, non-human primates, gene therapy safety, muscle fiber loss

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