Journal article

Publication year: 2009

Pages: 47-54

Journal: Journal of Controlled Release

Volume number: 140

Issue number: 1

ISSN: 0168-3659

eISSN: 1873-4995

DOI Link: https://doi.org/10.1016/j.jconrel.2009.07.017

Publisher: Elsevier

Abstract: 
The objective of this study was to develop highly efficient ternary nanocomposites for aerosol gene therapy consisting of a biodegradable polymer core, poly[vinyl-3-(diethylamino)propylcarbamate-co-vinyl acetate-co-vinyl alcohol]-graft-POIY(D,L-lactide-co-glycolide). pDNA and a third component to alter surface properties, physicochemical characteristics and biological activity. The effects of the surface altering components lung surfactant, carboxymethyl cellulose (CMC) or poloxamer on nanocomposites were characterized with regard to size, zeta potential, cytotoxicity, biological activity and surface properties. With increasing concentrations of lung surfactant, CIVIC or poloxamer, sizes of nanocomposites increased. AFM nanoindentation measurements showed a significant increase in adhesion forces of nanocomposites compared to pure nanoparticles. Zeta potential values, cytotoxicity and intracellular uptake demonstrated a strong dependency on the surface altering component. While an excess of CIVIC led to a decreased uptake into cells due to the negative zeta potential, nanocomposites with lung surfactant displayed enhanced intracellular uptake. Transfection efficiency of nanocomposites with lung surfactant was 12-fold higher compared to pure nanoparticles and 30-fold higher compared to polyethylenimine in lung cells and could also be maintained after nebulization. Ternary nanocomposites prepared with lung surfactant proved to be a potent pulmonary gene delivery vector due to its high stability during aerosolization with a vibrating mesh nebulizer and favourable biological activity. (C) 2009 Elsevier B.V. All rights reserved.

Harvard Citation style: Nguyen, J., Reul, R., Betz, T., Dayyoub, E., Schmehl, T., Gessler, T., et al. (2009) Nanocomposites of lung surfactant and biodegradable cationic nanoparticles improve transfection efficiency to lung cells, Journal of Controlled Release, 140(1), pp. 47-54. https://doi.org/10.1016/j.jconrel.2009.07.017

APA Citation style: Nguyen, J., Reul, R., Betz, T., Dayyoub, E., Schmehl, T., Gessler, T., Bakowsky, U., Seeger, W., & Kissel, T. (2009). Nanocomposites of lung surfactant and biodegradable cationic nanoparticles improve transfection efficiency to lung cells. Journal of Controlled Release. 140(1), 47-54. https://doi.org/10.1016/j.jconrel.2009.07.017