期刊
NANO LETTERS
卷 8, 期 8, 页码 2432-2436出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl801379y
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资金
- Agence Nationale de la Recherche [ANR06-BLAN-0197-01/CartilSpray]
- Fondation Avenir
- Ligue contre le Cancer, du haut Rhin, Region Alsace
- Canceropole du Grand Est
- Faculte de Chirurgie Dentaire of Strasbourg
Considerable efforts have been devoted to the design of structured materials with functional properties. Polyelectrolyte multilayer films are now a well-established nanostructured concept with numerous potential applications, in particular as biomaterial coatings. This technique allows the preparation of nanostructured architectures exhibiting specific properties for cell-activation control and local drug delivery. In this study, we used a multilayered system made of poly-(L-lysine)/hyaluronic acid (PLL/HA) as a reservoir for active DNA complexes with nonviral gene-delivery vectors, PLL, beta-cyclodextrin (CD), and PLL-CD. When embedded into the multilayered films, the transfection efficiencies of the DNA complexes and the cell viability were improved. The highest transfection efficiency was obtained with the PLL-CD/plasmid DNA (pDNA) complexes. We found that this high transfection efficiency was related to an efficient internalization of the complexes in the cell cytoplasm and selected nuclei domains through a nonendocytotic pathway. For the first time, we report the intracellular pathway of the pDNA in complexes incorporated into the multilayered system.
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