Abstract
Layer-by-layer (LbL) films are assembled with poly(amido amine)s (PAAs), a type of polycations containing bioreducible disulfide bond, and DNA plasmids to enable LbL film degradation in physiologic conditions by reacting with glutathione or redox-active membrane proteins. The interior layer structure of the LbL films during assembly and disassembly is studied by atomic force microscopy (AFM), ellipsometry, dynamic light scattering (DLS), and fluorescence spectroscopy. Insertion of barrier layers in bioreducible LbL films is necessary to stabilize the interior layer structure and slow down the film degradation rate to achieve sequential gene delivery. Localized gene delivery from the LbL films is demonstrated using human embryonic kidney 293 (HEK 293) cells.
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Xie, L., Zou, Y., Carroll, S., Muniz, M., Mao, G. (2019). Layer-By-Layer Film Engineering for Sequential Gene Delivery. In: Ogris, M., Sami, H. (eds) Nanotechnology for Nucleic Acid Delivery. Methods in Molecular Biology, vol 1943. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-9092-4_11
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DOI: https://doi.org/10.1007/978-1-4939-9092-4_11
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