Cited by 24Virus-based gene therapy researchLysosomal Storage Disorders ResearchRNA Interference and Gene Delivery

rAAV Gene Therapy in a Canavan’s Disease Mouse Model Reveals Immune Impairments and an Extended Pathology Beyond the Central Nervous System

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Ahmed, Seemin Seher, Schattgen, Stefan A, Frakes, Ashley E, Sikoglu, Elif M, Su, Qin, Li, Jia, Hampton, Thomas G, Denninger, Andrew R +4 more·2016·Molecular Therapy

Abstract

Aspartoacylase (AspA) gene mutations cause the pediatric lethal neurodegenerative Canavan disease (CD). There is emerging promise of successful gene therapy for CD using recombinant adeno-associated viruses (rAAVs). Here, we report an intracerebroventricularly delivered AspA gene therapy regime using three serotypes of rAAVs at a 20-fold reduced dose than previously described in AspA(-/-) mice, a bona-fide mouse model of CD. Interestingly, central nervous system (CNS)-restricted therapy prolonged survival over systemic therapy in CD mice but failed to sustain motor functions seen in systemically treated mice. Importantly, we reveal through histological and functional examination of untreated CD mice that AspA deficiency in peripheral tissues causes morphological and functional abnormalities in this heretofore CNS-defined disorder. We demonstrate for the first time that AspA deficiency, possibly through excessive N-acetyl aspartic acid accumulation, elicits both a peripheral and CNS immune response in CD mice. Our data establish a role for peripheral tissues in CD pathology and serve to aid the development of more efficacious and sustained gene therapy for this disease.

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Crossref · 10.1038/mt.2016.68

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Authors
Ahmed, S. S., Schattgen, S. A., Frakes, A. E., Sikoglu, E. M., Su, Q., Li, J., Hampton, T. G., Denninger, A. R., Kirschner, D. A., Kaspar, B., Matalon, R., & Gao, G.
Affiliations
  • University of Massachusetts Chan Medical School (US)
  • Nationwide Children's Hospital (US)
  • Mouse Specifics (United States) (US)
  • Boston College (US)
  • The University of Texas Medical Branch at Galveston (US)
Corresponding author
Gao, Guangping
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2016-06
Volume
24
Issue
6
Pages
1030-1041
ISSN
1525-0016 (ISSN-L)
OpenAlex
W2339223156
Cited by
24
References
45
Citations by year
2026: 1 · 2025: 2 · 2024: 5 · 2022: 3 · 2021: 3 · 2020: 1 · 2019: 2 · 2018: 3 · 2017: 3 · 2016: 1
FWCI
2.42
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@UMassChan (submittedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (T32NS077984, R01NS076991)
  • National Center for Research Resources (S10RR027897)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
Canavan disease, aspartoacylase deficiency, intracerebroventricular administration, peripheral immune response, neurodegeneration, motor function
MeSH terms
Dependovirus, Amidohydrolases, Animals, Central Nervous System, Disease Models, Animal, Genetic Vectors, Humans, Organ Specificity, Genetic Therapy, Survival Analysis, Treatment Outcome, Canavan Disease, Mice

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