Cited by 168Virus-based gene therapy researchBarrier Structure and Function StudiesRNA Interference and Gene Delivery

Rapid evolution of blood-brain-barrier-penetrating AAV capsids by RNA-driven biopanning

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Nonnenmacher, Mathieu, Wang, Wei, Child, Matthew A., Ren, Xiao-Qin, Huang, Carol, Ren, Amy Zhen, Tocci, Jenna, Chen, Qingmin +6 more·2021·Molecular Therapy - Methods & Clinical Development

Abstract

Therapeutic payload delivery to the central nervous system (CNS) remains a major challenge in gene therapy. Recent studies using function-driven evolution of adeno-associated virus (AAV) vectors have successfully identified engineered capsids with improved blood-brain barrier (BBB) penetration and CNS tropism in mouse. However, these strategies require transgenic animals and thus are limited to rodents. To address this issue, we developed a directed evolution approach based on recovery of capsid library RNA transcribed from CNS-restricted promoters. This RNA-driven screen platform, termed TRACER (Tropism Redirection of AAV by Cell-type-specific Expression of RNA), was tested in the mouse with AAV9 peptide display libraries and showed rapid emergence of dominant sequences. Ten individual variants were characterized and showed up to 400-fold higher brain transduction over AAV9 following systemic administration. Our results demonstrate that the TRACER platform allows rapid selection of AAV capsids with robust BBB penetration and CNS tropism in non-transgenic animals.

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  1. [39]Hordeaux J. Wang Q. Katz N. Buza E.L. Bell P. Wilson J.M. The Neurotropic Properties of AAV-PHP.B Are Limited to C57BL/6J Mice Mol. Ther. 26 2018 664 668 29428298 PMC5911151
  2. [42]Hordeaux J. Yuan Y. Clark P.M. Wang Q. Martino R.A. Sims J.J. Bell P. Raymond A. Stanford W.L. Wilson J.M. The GPI-Linked Protein LY6A Drives AAV-PHP.B Transport across the Blood-Brain Barrier Mol. Ther. 27 2019 912 921 30819613 PMC6520463

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Authors
Nonnenmacher, M., Wang, W., Child, M. A., Ren, X.-Q., Huang, C., Ren, A. Z., Tocci, J., Chen, Q., Bittner, K., Tyson, K., Pande, N., Chung, C. H.-Y., Paul, S. M., & Hou, J.
Affiliations
Voyager Therapeutics (United States) (US)
Corresponding author
  • Nonnenmacher, Mathieu
  • Hou, Jay
Venue
Molecular Therapy - Methods & Clinical Development
Publisher
Elsevier BV
Published
2021-03
Volume
20
Pages
366-378
ISSN
2329-0501 (ISSN-L)
OpenAlex
W3115131581
Cited by
168
References
49
Citations by year
2026: 25 · 2025: 46 · 2024: 32 · 2023: 27 · 2022: 28 · 2021: 9
FWCI
9.38
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy — Methods & Clinical Development (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
adeno-associated virus vectors, blood-brain barrier penetration

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