Cited by 142Virus-based gene therapy researchRNA Interference and Gene DeliveryBarrier Structure and Function Studies

A systematic capsid evolution approach performed in vivo for the design of AAV vectors with tailored properties and tropism

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Davidsson, Marcus, Wang, Gang, Aldrin-Kirk, Patrick, Cardoso, Tiago, Nolbrant, Sara, Hartnor, Morgan, Mudannayake, Janitha, Parmar, Malin +1 more·2019·Proceedings of the National Academy of Sciences

Published version of a preprint

Abstract

Adeno-associated virus (AAV) capsid modification enables the generation of recombinant vectors with tailored properties and tropism. Most approaches to date depend on random screening, enrichment, and serendipity. The approach explored here, called BRAVE (barcoded rational AAV vector evolution), enables efficient selection of engineered capsid structures on a large scale using only a single screening round in vivo. The approach stands in contrast to previous methods that require multiple generations of enrichment. With the BRAVE approach, each virus particle displays a peptide, derived from a protein, of known function on the AAV capsid surface, and a unique molecular barcode in the packaged genome. The sequencing of RNA-expressed barcodes from a single-generation in vivo screen allows the mapping of putative binding sequences from hundreds of proteins simultaneously. Using the BRAVE approach and hidden Markov model-based clustering, we present 25 synthetic capsid variants with refined properties, such as retrograde axonal transport in specific subtypes of neurons, as shown for both rodent and human dopaminergic neurons.

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Crossref · 10.1073/pnas.1910061116

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  • The capsid-cell surface interaction is the primary determinant of AAV tropism.

    “Although it is possible to utilize promoter elements that limit transgene expression to specific cellular lineages, the capsid-cell surface interaction is the primary determinant of AAV tropism.”

    From Preclinical biodistribution, tropism, and efficacy of oligotropic AAV/Olig001 in a mouse model of congenital white matter disease (2021) · cites this paper as [2]

    In Results, ‘Validation of the BRAVE Screening Principle’ (page unavailable), removing a capsid motif that binds a cell-surface proteoglycan eliminated HEK293T-cell tropism, and a modified capsid restored it. This supports a role for capsid–cell-surface interactions, but the paper does not establish that they are the primary determinant of AAV tropism relative to other factors. (LLM, conf=0.82)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 1

  1. [40]Davidsson M., BRAVE AAV library for in vivo screening of retrograde transport in the CNS. National Center for Biotechnology Information (NCBI) Sequence Read Archive (SRA). https://www.ncbi.nlm.nih.gov/bioproject/PRJNA473475. Deposited 29 May 2018.

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Authors
Davidsson, M., Wang, G., Aldrin-Kirk, P., Cardoso, T., Nolbrant, S., Hartnor, M., Mudannayake, J., Parmar, M., & Björklund, T.
Affiliations
Lund University (SE)
Corresponding author
Björklund, Tomas
Venue
Proceedings of the National Academy of Sciences
Published
2019-12-09
Volume
116
Issue
52
Pages
27053-27062
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2992974653
Cited by
142
References
72
Citations by year
2026: 15 · 2025: 7 · 2024: 16 · 2023: 20 · 2022: 23 · 2021: 32 · 2020: 24 · 2019: 2 · 2018: 1 · 2013: 1
FWCI
12.16
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion, cc-by-nc-nd)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion, other-oa)
Funders
  • Parkinson's Disease Foundation (PDF-IRG-1303)
  • Åke Wiberg Stiftelse
  • Tore Nilsons Stiftelse för Medicinsk Forskning
  • Vetenskapsrådet (ÄR-MH-2016-01997, K2014-79X-22510-01-1)
  • Åhlén-stiftelsen
  • Magnus Bergvalls Stiftelse
  • Science for Life Laboratory
  • Parkinsonfonden
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
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
Keywords
adeno-associated virus, AAV capsid engineering, Brave, in vivo selection, DNA barcoding, peptide display, retrograde axonal transport, dopaminergic neurons, viral tropism, gene therapy vectors

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