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luciferase (Gluc), in the airways and serum after nose-only and intravenous administration of rSIV.F/HN-Gluc (2e8 TU/mouse). Gluc expression in the nose and lungs was higher following nose-only versus intravenous administration. Serum levels were similar after either route of administration. Finally, nose-only delivery of rSIV.F/HN encoding granulocyte-macrophage colony-stimulating factor (GM-CSF) led to sufficient lung levels of this therapeutic protein to correct disease biomarkers in a mouse model of pulmonary alveolar proteinosis. We conclude that non-invasive administration of a lentiviral vector to the nasal epithelium provides a safe and convenient route for secreted protein production and is readily translatable into humans.
Sinadinos et al. (Mon,) studied this question.
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