ArticleMolecular therapy. Methods & clinical development2022
The engineered AAV2-HBKO promotes non-invasive gene delivery to large brain regions beyond ultrasound targeted sites.
Article in Molecular therapy. Methods & clinical development, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 14 citations in OpenAlex.
- Focused ultrasound expands intra-CSF AAV delivery to deep brain regions in rats and non-human primates.Molecular therapy : the journal of the American Society of Gene Therapy · 2026Article
- Antibody-guided AAV vectors for antigen-specific delivery of suicide genes.Gene therapy · 2026Article
- Adeno-associated virus vector delivery to the brain: Technology advancements and clinical applications.Advanced drug delivery reviews · 2024Review
- Focused Ultrasound-Mediated Disruption of the Blood-Brain Barrier for AAV9 Delivery in a Mouse Model of Huntington's Disease.Pharmaceutics · 2024Article
- Sonoselective delivery using ultrasound and microbubbles combined with intravenous rAAV9 CLDN5-GFP does not increase endothelial gene expression.Gene therapy · 2023Article
- rAAV2-Mediated Restoration of GALC in Neural Stem Cells from Krabbe Patient-Derived iPSCs.Pharmaceuticals (Basel, Switzerland) · 2023Article
- PET imaging of focused-ultrasound enhanced delivery of AAVs into the murine brain.Theranostics · 2023Article
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
Abstract
Magnetic resonance imaging-guided focused ultrasound combined with microbubbles injected in the bloodstream (MRIgFUS) temporarily increases the permeability of the blood-brain barrier (BBB), which facilitates the entry of intravenously administered adeno-associated viruses (AAVs) from the blood to targeted brain areas. To date, the properties of the AAVs used for MRIgFUS delivery resulted in cell transduction limited to MRIgFUS-targeted sites. Considering future clinical applications, strategies are needed to deliver genes to multiple locations and large brain volumes while creating minimal BBB modulation. Here we combine MRIgFUS with a vector that has enhanced biodistribution following brain entry, AAV2-HBKO, to mediate broad gene delivery to targeted brain regions at levels with potential therapeutic relevance. Expression of a reporter gene was achieved in 13% and 21% of all neurons present in the striatum and thalamus, respectively, while targeting only 28% of the brain regions with MRIgFUS. Compared with AAV9, MRIgFUS-mediated delivery of AAV2-HBKO showed greater diffusion in the brain and a higher percentage of the neurons expressing the transgene. MRIgFUS AAV2-HBKO gene delivery to the brain has the potential to reach levels that are functionally and clinically relevant, and this even when using relatively low intravenous AAV dosages, compared with what is currently used in clinical trials.
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Registered trials
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