Cited by 108Virus-based gene therapy researchLysosomal Storage Disorders ResearchRNA Interference and Gene Delivery

Mannitol-facilitated CNS entry of rAAV2 vector significantly delayed the neurological disease progression in MPS IIIB mice

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McCarty, D M, DiRosario, J, Gulaid, K, Muenzer, J, Fu, H·2009·Gene Therapy

Abstract

The presence of the blood-brain barrier (BBB) presents the most critical challenge in therapeutic development for mucopolysaccharidosis (MPS) IIIB, a lysosomal storage disease with severe neurological manifestation, because of alpha-N-acetylglucosaminidase (NaGlu) deficiency. Earlier, we showed a global central nervous system (CNS) transduction in mice by mannitol-facilitated entry of intravenous (IV)-delivered recombinant adeno-associated viral serotype 2 (rAAV2) vector. In this study, we optimized the approach and showed that the maximal transduction in the CNS occurred when the rAAV2 vector was IV injected at 8 min after mannitol administration, and was approximately 10-fold more efficient than IV delivery of the vector at 5 or 10 min after mannitol infusion. Using this optimal (8 min) regimen, a single IV infusion of rAAV2-CMV-hNaGlu vector is therapeutically beneficial for treating the CNS disease of MPS IIIB in adult mice, with significantly extended survival, improved behavioral performance, and reduction of brain lysosomal storage pathology. The therapeutic benefit correlated with maximal delivery to the CNS, but not peripheral tissues. This milestone data shows the first effective gene delivery across the BBB to treat CNS disease. The critical timing of vector delivery and mannitol infusion highlights the important contribution of this pretreatment to successful intervention, and the long history of safe use of mannitol in patients bodes well for its application in CNS gene therapy.

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Crossref · 10.1038/gt.2009.85

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  • Optimal transduction of AAV2 vectors in the brain was achieved by IV injection of AAV 8 min after mannitol administration; delivery less than 5 min or 10 min after mannitol infusion was ten times less efficient.

    “a study showed that the optimal transduction of AAV2 vectors in the brain was achieved by IV injection of AAV 8 min after mannitol administration; delivery of the vector less than 5 min or 10 min after mannitol infusion was ten times less efficient.”

    From Designing and optimizing AAV-mediated gene therapy for neurodegenerative diseases: from bench to bedside (2024) · cites this paper as [133]

    Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • Mannitol-mediated BBB disruption allows broad CNS distribution of AAV vectors depending on mannitol dose, infusion route, and virus injection timing.

    “Considering above, mannitol-mediated BBB disruption allows broad CNS distribution of AAV vectors depending on the mannitol dose, infusion route as well as virus injection timing [133].”

    From Designing and optimizing AAV-mediated gene therapy for neurodegenerative diseases: from bench to bedside (2024) · cites this paper as [133]

    The Results section reports diffuse CNS transgene expression after IV mannitol and rAAV2 delivery in mice, and shows that vector-injection timing strongly affected CNS entry. The Introduction and Discussion distinguish IV from intra-arterial delivery, but the paper does not establish how changing the mannitol dose or infusion route affects broad AAV distribution. Page numbers are unavailable in our copy. (LLM, conf=0.86)

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Research works printed but not linked: 2

  1. [1]Neufeld EF Muenzer J The mucopolysaccharidoses Scriver CR Beaudet AL Sly WS Valle D The metabolic & molecular basis of inherited disease 8 McGraw-Hill New York, St Louis; San Francisco 2001 3421 3452
  2. [15]Doolittle ND Miner ME Hall WA Siegal T Jerome E Osztie E Safety and efficacy of a multicenter study using intraarterial chemotherapy in conjunction with osmotic opening of the blood-brain barrier for the treatment of patients with malignant brain tumors Cancer 2000 88 637 647 10649259

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Authors
McCarty, D. M., DiRosario, J., Gulaid, K., Muenzer, J., & Fu, H.
Affiliations
  • Nationwide Children's Hospital (US)
  • Abigail Wexner Research Institute (US)
  • University of North Carolina at Chapel Hill (US)
Venue
Gene Therapy
Published
2009-07-09
Volume
16
Issue
11
Pages
1340-1352
ISSN
  • 0969-7128 (ISSN-L)
  • 1476-5462
OpenAlex
W1978350886
Cited by
105
References
65
Citations by year
2025: 4 · 2024: 9 · 2023: 2 · 2022: 4 · 2021: 4 · 2020: 7 · 2019: 10 · 2018: 6 · 2017: 1 · 2016: 7 · 2015: 4 · 2014: 10 · 2013: 7 · 2012: 6
FWCI
5.23
Type
journal article
Language
en
Open access
Locations
  • Gene Therapy (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • UNC Libraries
Funders
  • Sanfilippo Research Foundation
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK063972)
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
mannitol, blood-brain barrier, central nervous system gene delivery, mucopolysaccharidosis type IIIB, alpha-N-acetylglucosaminidase, lysosomal storage disease, behavioral performance, survival
MeSH terms
Acetylglucosaminidase, Dependovirus, Animals, Blood-Brain Barrier, Genetic Vectors, Mannitol, Mice, Inbred C57BL, Mucopolysaccharidosis III, Recombinant Proteins, Tissue Distribution, Transduction, Genetic, Survival Analysis, Mice, Knockout, Disease Progression, Maze Learning, Mice

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