Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.

The engineered AAV-PHP.B family of adeno-associated virus efficiently delivers genes throughout the mouse central nervous system. To guide their application across disease models, and to inspire the development of translational gene therapy vectors for targeting neurological diseases in humans, we s...

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Main Authors: Qin Huang, Ken Y Chan, Isabelle G Tobey, Yujia Alina Chan, Tim Poterba, Christine L Boutros, Alejandro B Balazs, Richard Daneman, Jonathan M Bloom, Cotton Seed, Benjamin E Deverman
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2019-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0225206
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author Qin Huang
Ken Y Chan
Isabelle G Tobey
Yujia Alina Chan
Tim Poterba
Christine L Boutros
Alejandro B Balazs
Richard Daneman
Jonathan M Bloom
Cotton Seed
Benjamin E Deverman
author_facet Qin Huang
Ken Y Chan
Isabelle G Tobey
Yujia Alina Chan
Tim Poterba
Christine L Boutros
Alejandro B Balazs
Richard Daneman
Jonathan M Bloom
Cotton Seed
Benjamin E Deverman
author_sort Qin Huang
collection DOAJ
description The engineered AAV-PHP.B family of adeno-associated virus efficiently delivers genes throughout the mouse central nervous system. To guide their application across disease models, and to inspire the development of translational gene therapy vectors for targeting neurological diseases in humans, we sought to elucidate the host factors responsible for the CNS tropism of the AAV-PHP.B vectors. Leveraging CNS tropism differences across 13 mouse strains, we systematically determined a set of genetic variants that segregate with the permissivity phenotype, and rapidly identified LY6A as an essential receptor for the AAV-PHP.B vectors. Interfering with LY6A by CRISPR/Cas9-mediated Ly6a disruption or with blocking antibodies reduced transduction of mouse brain endothelial cells by AAV-PHP.eB, while ectopic expression of Ly6a increased AAV-PHP.eB transduction of HEK293T and CHO cells by 30-fold or more. Importantly, we demonstrate that this newly discovered mode of AAV binding and transduction can occur independently of other known AAV receptors. These findings illuminate the previously reported species- and strain-specific tropism characteristics of the AAV-PHP.B vectors and inform ongoing efforts to develop next-generation AAV vehicles for human CNS gene therapy.
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spelling doaj.art-c8f3782bb38348a0822fd1454a18ee122022-12-22T02:12:19ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-011411e022520610.1371/journal.pone.0225206Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.Qin HuangKen Y ChanIsabelle G TobeyYujia Alina ChanTim PoterbaChristine L BoutrosAlejandro B BalazsRichard DanemanJonathan M BloomCotton SeedBenjamin E DevermanThe engineered AAV-PHP.B family of adeno-associated virus efficiently delivers genes throughout the mouse central nervous system. To guide their application across disease models, and to inspire the development of translational gene therapy vectors for targeting neurological diseases in humans, we sought to elucidate the host factors responsible for the CNS tropism of the AAV-PHP.B vectors. Leveraging CNS tropism differences across 13 mouse strains, we systematically determined a set of genetic variants that segregate with the permissivity phenotype, and rapidly identified LY6A as an essential receptor for the AAV-PHP.B vectors. Interfering with LY6A by CRISPR/Cas9-mediated Ly6a disruption or with blocking antibodies reduced transduction of mouse brain endothelial cells by AAV-PHP.eB, while ectopic expression of Ly6a increased AAV-PHP.eB transduction of HEK293T and CHO cells by 30-fold or more. Importantly, we demonstrate that this newly discovered mode of AAV binding and transduction can occur independently of other known AAV receptors. These findings illuminate the previously reported species- and strain-specific tropism characteristics of the AAV-PHP.B vectors and inform ongoing efforts to develop next-generation AAV vehicles for human CNS gene therapy.https://doi.org/10.1371/journal.pone.0225206
spellingShingle Qin Huang
Ken Y Chan
Isabelle G Tobey
Yujia Alina Chan
Tim Poterba
Christine L Boutros
Alejandro B Balazs
Richard Daneman
Jonathan M Bloom
Cotton Seed
Benjamin E Deverman
Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.
PLoS ONE
title Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.
title_full Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.
title_fullStr Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.
title_full_unstemmed Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.
title_short Delivering genes across the blood-brain barrier: LY6A, a novel cellular receptor for AAV-PHP.B capsids.
title_sort delivering genes across the blood brain barrier ly6a a novel cellular receptor for aav php b capsids
url https://doi.org/10.1371/journal.pone.0225206
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