Syndecan-4 Mediates the Cellular Entry of Adeno-Associated Virus 9

Due to their low pathogenicity, immunogenicity, and long-term gene expression, adeno-associated virus (AAV) vectors emerged as safe and efficient gene delivery tools, over-coming setbacks experienced with other viral gene delivery systems in early gene therapy trials. Among AAVs, AAV9 can translocat...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: Hudák Anett
Roach Matthew
Pusztai Dávid
Pettkó-Szandtner Aladár
Letoha Annamária
Szilák László
Azzouz Mimoun
Letoha Tamás
Dokumentumtípus: Cikk
Megjelent: 2023
Sorozat:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 24 No. 4
Tárgyszavak:
doi:10.3390/ijms24043141

mtmt:33630992
Online Access:http://publicatio.bibl.u-szeged.hu/26461
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520 3 |a Due to their low pathogenicity, immunogenicity, and long-term gene expression, adeno-associated virus (AAV) vectors emerged as safe and efficient gene delivery tools, over-coming setbacks experienced with other viral gene delivery systems in early gene therapy trials. Among AAVs, AAV9 can translocate through the blood-brain barrier (BBB), making it a promising gene delivery tool for transducing the central nervous system (CNS) via systemic administration. Recent reports on the shortcomings of AAV9-mediated gene delivery into the CNS require reviewing the molecular base of AAV9 cellular biology. A more detailed understanding of AAV9’s cellular entry would eradicate current hurdles and enable more efficient AAV9-based gene therapy approaches. Syndecans, the transmembrane family of heparan-sulfate proteoglycans, facilitate the cellular uptake of various viruses and drug delivery systems. Utilizing human cell lines and syndecan-specific cellular assays, we assessed the involvement of syndecans in AAV9’s cellular entry. The ubiquitously expressed isoform, syndecan-4 proved its superiority in facilitating AAV9 internalization among syndecans. Introducing syndecan-4 into poorly transducible cell lines enabled robust AAV9-dependent gene transduction, while its knockdown reduced AAV9’s cellular entry. Attachment of AAV9 to syndecan-4 is mediated not just by the polyanionic heparan-sulfate chains but also by the cell-binding domain of the extracellular syndecan-4 core protein. Co-immunoprecipitation assays and affinity proteomics also confirmed the role of syndecan-4 in the cellular entry of AAV9. Overall, our findings highlight the universally expressed syndecan-4 as a significant contributor to the cellular internalization of AAV9 and provide a molecular-based, rational explanation for the low gene delivery potential of AAV9 into the CNS. 
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700 0 1 |a Pusztai Dávid  |e aut 
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700 0 2 |a Letoha Annamária  |e aut 
700 0 2 |a Szilák László  |e aut 
700 0 2 |a Azzouz Mimoun  |e aut 
700 0 2 |a Letoha Tamás  |e aut 
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