Cited by 113Virus-based gene therapy researchRNA Interference and Gene DeliveryLysosomal Storage Disorders Research

A novel adeno-associated virus capsid with enhanced neurotropism corrects a lysosomal transmembrane enzyme deficiency

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Tordo, Julie, O’Leary, Claire, Antunes, André S L M, Palomar, Nuria, Aldrin-Kirk, Patrick, Basche, Mark, Bennett, Antonette, D’Souza, Zelpha +23 more·2018·Brain

Abstract

Recombinant adeno-associated viruses (AAVs) are popular in vivo gene transfer vehicles. However, vector doses needed to achieve therapeutic effect are high and some target tissues in the central nervous system remain difficult to transduce. Gene therapy trials using AAV for the treatment of neurological disorders have seldom led to demonstrated clinical efficacy. Important contributing factors are low transduction rates and inefficient distribution of the vector. To overcome these hurdles, a variety of capsid engineering methods have been utilized to generate capsids with improved transduction properties. Here we describe an alternative approach to capsid engineering, which draws on the natural evolution of the virus and aims to yield capsids that are better suited to infect human tissues. We generated an AAV capsid to include amino acids that are conserved among natural AAV2 isolates and tested its biodistribution properties in mice and rats. Intriguingly, this novel variant, AAV-TT, demonstrates strong neurotropism in rodents and displays significantly improved distribution throughout the central nervous system as compared to AAV2. Additionally, sub-retinal injections in mice revealed markedly enhanced transduction of photoreceptor cells when compared to AAV2. Importantly, AAV-TT exceeds the distribution abilities of benchmark neurotropic serotypes AAV9 and AAVrh10 in the central nervous system of mice, and is the only virus, when administered at low dose, that is able to correct the neurological phenotype in a mouse model of mucopolysaccharidosis IIIC, a transmembrane enzyme lysosomal storage disease, which requires delivery to every cell for biochemical correction. These data represent unprecedented correction of a lysosomal transmembrane enzyme deficiency in mice and suggest that AAV-TT-based gene therapies may be suitable for treatment of human neurological diseases such as mucopolysaccharidosis IIIC, which is characterized by global neuropathology.

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  • A novel variant AAV-TT derived from AAV2 revealed strong neurotropism and exceeded transduction of AAV9 and AAVrh10 in mice, even correcting neurological deficits in the mouse model of MPSIIIC.

    “It is noted a novel variant AAV-TT derived from AAV2 revealed strong neurotropism and exceeded transduction of AAV9 and AAVrh10 in mice, even correcting neurological deficits in the mouse model of MPSIIIC [61].”

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  1. Sparks Therapeutics. Spark Therapeutics presents updated preliminary data from hemophilia B phase 1/2 trial suggesting consistent and sustained levels of factor IX activity at the Hemostasis and Thrombosis Research Society (HTRS) 2017 Scientific Symposium. Press Release, 2017.

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Authors
Tordo, J., O’Leary, C., Antunes, A. S. L. M., Palomar, N., Aldrin-Kirk, P., Basche, M., Bennett, A., D’Souza, Z., Gleitz, H., Godwin, A., Holley, R. J., Parker, H., Liao, A. Y., Rouse, P., Youshani, A. S., Dridi, L., Martins, C., Levade, T., Stacey, K. B., Davis, D. M., Dyer, A., Clément, N., Björklund, T., Ali, R. R., Agbandje-McKenna, M., Rahim, A. A., Pshezhetsky, A., Waddington, S. N., Linden, R. M., Bigger, B. W., & Henckaerts, E.
Affiliations
  • King's College London (GB)
  • University of Manchester (GB)
  • Lund University (SE)
  • University College London (GB)
  • University of Florida (US)
  • Centre Hospitalier Universitaire Sainte-Justine (CA)
  • Inserm (FR)
  • Department of Biochemistry and Molecular Biology, Center for Structural Biology, McKnight Brain Institute, College of Medicine, University of Florida, Gainesville, FL, USA
  • UCL School of Pharmacy (GB)
  • South African Medical Research Council (ZA)
Corresponding author
  • Bigger, Brian W
  • Henckaerts, Els
Venue
Brain
Published
2018-05-16
Volume
141
Issue
7
Pages
2014-2031
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2800131432
Cited by
113
References
81
Citations by year
2026: 6 · 2025: 7 · 2024: 22 · 2023: 13 · 2022: 7 · 2021: 14 · 2020: 24 · 2019: 14 · 2018: 5
FWCI
8.72
Type
journal article
Language
en
Open access
Locations
  • Brain (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Lirias (submittedVersion, other-oa)
  • UCL Discovery (University College London) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion, cc-by-nc)
  • Lund University Publications (Lund University) (submittedVersion)
  • Research Explorer (The University of Manchester) (submittedVersion, cc-by-nc)
Funders
  • Action Medical Research (GN2485)
  • Swedish Research Council (ÄR-MH-2016-01997)
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 › Physiology › Lysosomal Storage Disorders Research
Keywords
neurotropism, lysosomal storage disease, central nervous system gene delivery, phototransduction, AAV9, AAVrh10, vector biodistribution
MeSH terms
Dependovirus, Animals, Capsid, Female, Genetic Vectors, Male, Mice, Inbred C57BL, Mucopolysaccharidosis III, Photoreceptor Cells, Retina, Tissue Distribution, Transduction, Genetic, Protein Engineering, Genetic Therapy, Rats, Sprague-Dawley, Mice, Rats

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