Tropism of AAV.CPP.16 in the respiratory tract and its application for a CRISPR-based gene therapy against SARS-CoV-2
Yang, Z.; Yao, Y.; Chen, X.; Madigan, V.; Fan, X.; Pu, J.; Bei, F.
Show abstract
Efficient gene delivery vectors are essential for developing gene therapies for respiratory diseases. Here, we report that AAV.CPP.16, a novel AAV9-derived adeno-associated virus vector, can efficiently transduce airway epithelium systems and lung parenchyma cells in both mice and non-human primates after intranasal administration. AAV.CPP.16 outperforms AAV6 and AAV9, two wild-type AAVs with demonstrated tropism to respiratory tract tissues, and can target major cell types in the respiratory tract and the lung. We also report an "all-in-one", CRISPR-Cas13d-based AAV gene therapy vector that targets the highly conserved RNA-dependent RNA polymerase (Rdrp) gene in SARS-CoV-2, and show the potential of such gene therapy against a broad range of circulating and emergent SARS-CoV-2 variants. Thus, AAV.CPP.16 could be a useful gene delivery vector for treating genetic respiratory diseases and airborne infections including for developing a potential prophilaxis to SARS-CoV-2.
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