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- W4220717441 abstract "Adeno-associated virus (AAV) vectors are proving to be clinically transformative tools in the treatment of monogenic genetic disease. Rapid ongoing development of this technology promises to not only increase the number of monogenic disorders amenable to this approach but also to bring diseases with complex multigenic and nongenetic etiologies within therapeutic reach. In this study, we explore the broader paradigm of converting the liver into a biofactory for systemic output of therapeutic molecules using AAV-mediated delivery of the endonuclease DNaseI as an exemplar. DNaseI can clear neutrophil extracellular traps (NETs), which are nuclear-protein structures possessing antimicrobial action, also involved in the pathophysiology of clinically troubling immune-mediated diseases. However, a translational challenge is short half-life of the enzyme in vivo (<5 h). This study demonstrates that AAV-mediated liver-targeted gene transfer stably induces serum DNaseI activity to >190-fold above physiological levels. In lupus-prone mice (NZBWF1), the activity was maintained for longer than 6 months, the latest time point tested, and resulted in a clear functional effect with reduced renal presence of neutrophils, NETs, IgG, and complement C3. However, treatment in this complex disease model did not extend lifespan, improve serological endpoints, or preserve renal function, indicating there are elements of pathophysiology not accessible to DNaseI in the NZBWF1 model. We conclude that a translational solution to the challenge of short half-life of DNaseI is AAV-mediated gene delivery and that this may be efficacious in treating disease where NETs are a dominant pathological mechanism." @default.
- W4220717441 created "2022-04-03" @default.
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- W4220717441 date "2022-05-01" @default.
- W4220717441 modified "2023-10-02" @default.
- W4220717441 title "Conversion of the liver into a biofactory for DNaseI using adeno-associated virus vector gene transfer reduces neutrophil extracellular traps in a model of Systemic Lupus Erythematosus
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- W4220717441 doi "https://doi.org/10.1089/hum.2021.264" @default.
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