GPR108 Is a Highly Conserved AAV Entry Factor.
Amino Acid Motifs
Animals
CRISPR-Cas Systems
Capsid Proteins
/ chemistry
Conserved Sequence
Dependovirus
/ classification
Evolution, Molecular
Gene Transfer Techniques
Genetic Engineering
Genetic Therapy
Genetic Vectors
/ genetics
Genome, Viral
Golgi Apparatus
/ metabolism
Humans
Phylogeny
Protein Interaction Domains and Motifs
AAV
CRISPR screen
GPR108
adeno-associated virus
endosomal escape
entry
in vivo
receptor
Journal
Molecular therapy : the journal of the American Society of Gene Therapy
ISSN: 1525-0024
Titre abrégé: Mol Ther
Pays: United States
ID NLM: 100890581
Informations de publication
Date de publication:
05 02 2020
05 02 2020
Historique:
received:
04
04
2019
revised:
26
10
2019
accepted:
05
11
2019
pubmed:
1
12
2019
medline:
29
12
2020
entrez:
1
12
2019
Statut:
ppublish
Résumé
Adeno-associated virus (AAV) is a highly promising gene transfer vector, yet major cellular requirements for AAV entry are poorly understood. Using a genome-wide CRISPR screen for entry of evolutionarily divergent serotype AAVrh32.33, we identified GPR108, a member of the G protein-coupled receptor superfamily, as an AAV entry factor. Of greater than 20 divergent AAVs across all AAV clades tested in human cell lines, only AAV5 transduction was unaffected in the GPR108 knockout (KO). GPR108 dependency was further shown in murine and primary cells in vitro. These findings are further validated in vivo, as the Gpr108 KO mouse demonstrates 10- to 100-fold reduced expression for AAV8 and rh32.33 but not AAV5. Mechanistically, both GPR108 N- and C-terminal domains are required for transduction, and on the capsid, a VP1 unique domain that is not conserved on AAV5 can be transferred to confer GPR108 independence onto AAV2 chimeras. In vitro binding and fractionation studies indicate reduced nuclear import and cytosolic accumulation in the absence of GPR108. We thus have identified the second of two AAV entry factors that is conserved between mice and humans relevant both in vitro and in vivo, further providing a mechanistic understanding to the tropism of AAV gene therapy vectors.
Identifiants
pubmed: 31784416
pii: S1525-0016(19)30501-5
doi: 10.1016/j.ymthe.2019.11.005
pmc: PMC7000996
pii:
doi:
Substances chimiques
Capsid Proteins
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
367-381Subventions
Organisme : NIAID NIH HHS
ID : R01 AI130123
Pays : United States
Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2019 The American Society of Gene and Cell Therapy. Published by Elsevier Inc. All rights reserved.
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