Influence of AAV vector tropism on long-term expression and Fc-γ receptor binding of an antibody targeting SARS-CoV-2
Long-acting passive immunization strategies are needed to protect immunosuppressed vulnerable groups from infectious diseases. To further explore this concept for COVID-19, we constructed Adeno-associated viral (AAV) vectors encoding the human variable regions of the SARS-CoV-2 neutralizing antibody...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2024
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| In: |
Communications biology
Year: 2024, Jahrgang: 7, Pages: 1-15 |
| ISSN: | 2399-3642 |
| DOI: | 10.1038/s42003-024-06529-3 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1038/s42003-024-06529-3 Verlag, kostenfrei, Volltext: https://www.nature.com/articles/s42003-024-06529-3 
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| Verfasserangaben: | Jannik T. Wagner, Sandra M. Müller-Schmucker, Wenjun Wang, Philipp Arnold, Nadja Uhlig, Leila Issmail, Valentina Eberlein, Dominik Damm, Kaveh Roshanbinfar, Armin Ensser, Friederike Oltmanns, Antonia Sophia Peter, Vladimir Temchura, Silke Schrödel, Felix B. Engel, Christian Thirion, Thomas Grunwald, Manfred Wuhrer, Dirk Grimm & Klaus Überla |
MARC
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| 245 | 1 | 0 | |a Influence of AAV vector tropism on long-term expression and Fc-γ receptor binding of an antibody targeting SARS-CoV-2 |c Jannik T. Wagner, Sandra M. Müller-Schmucker, Wenjun Wang, Philipp Arnold, Nadja Uhlig, Leila Issmail, Valentina Eberlein, Dominik Damm, Kaveh Roshanbinfar, Armin Ensser, Friederike Oltmanns, Antonia Sophia Peter, Vladimir Temchura, Silke Schrödel, Felix B. Engel, Christian Thirion, Thomas Grunwald, Manfred Wuhrer, Dirk Grimm & Klaus Überla |
| 246 | 3 | 3 | |a Influence of AAV vector tropism on long-term expression and Fc- gamma receptor binding of an antibody targeting SARS-CoV-2 |
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| 520 | |a Long-acting passive immunization strategies are needed to protect immunosuppressed vulnerable groups from infectious diseases. To further explore this concept for COVID-19, we constructed Adeno-associated viral (AAV) vectors encoding the human variable regions of the SARS-CoV-2 neutralizing antibody, TRES6, fused to murine constant regions. An optimized vector construct was packaged in hepatotropic (AAV8) or myotropic (AAVMYO) AAV capsids and injected intravenously into syngeneic TRIANNI-mice. The highest TRES6 serum concentrations (511 µg/ml) were detected 24 weeks after injection of the myotropic vector particles and mean TRES6 serum concentrations remained above 100 µg/ml for at least one year. Anti-drug antibodies or TRES6-specific T cells were not detectable. After injection of the AAV8 particles, vector mRNA was detected in the liver, while the AAVMYO particles led to high vector mRNA levels in the heart and skeletal muscle. The analysis of the Fc-glycosylation pattern of the TRES6 serum antibodies revealed critical differences between the capsids that coincided with different binding activities to murine Fc-γ-receptors. Concomitantly, the vector-based immune prophylaxis led to protection against SARS-CoV-2 infection in K18-hACE2 mice. High and long-lasting expression levels, absence of anti-drug antibodies and favourable Fc-γ-receptor binding activities warrant further exploration of myotropic AAV vector-based delivery of antibodies and other biologicals. | ||
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