Multilayer coating of gold nanoparticles with drug-polymer coadsorbates
The aim of our present study was the development of a drug multilayer-based carrier system for delivery of water-insoluble drugs. As drug, we applied the anticancer drug 5,10,15,20-tetrakis(3-hydroxyphenyl)porphyrin, mTHPP, which is a model photosensitizer for photodynamic therapy. Gold nanoparticle...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 26(2010), 22 vom: 16. Nov., Seite 16901-8 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2010
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Antineoplastic Agents Drug Carriers Polyamines Polystyrenes Porphyrins tetra(3-hydroxyphenyl)porphine polyallylamine 30551-89-4 mehr... |
| Zusammenfassung: | The aim of our present study was the development of a drug multilayer-based carrier system for delivery of water-insoluble drugs. As drug, we applied the anticancer drug 5,10,15,20-tetrakis(3-hydroxyphenyl)porphyrin, mTHPP, which is a model photosensitizer for photodynamic therapy. Gold nanoparticles (AuNP) with a diameter of 14.5 ± 0.9 nm were prepared and used as template for the layer-by-layer approach. The drug and the negatively charged polyelectrolyte (PE) poly(styrene sulfonate) sodium salt (PSS) were complexed with a new developed method using freeze-drying. The complexation efficiency was determined to be ∼11-12 monomers PSS per mTHPP molecule by CHNS analysis and UV/vis measurement. Molecular docking simulations revealed π-π interactions and H-bonding to be the responsible mechanisms. A drug multilayer system based on the layer-by-layer (LbL) technique utilized the water-soluble complex as anionic layer material and poly(allylamine hydrochloride) (PAH) as cationic layer. The modified AuNP were characterized by different physicochemical techniques such as UV/vis, ζ-potential, ICP-OES, and TEM. To the best of our knowledge, we could demonstrate for the first time the adsorption of three drug layers to a nanoparticulate system. Furthermore, the adaptation of the LbL-technique resulted in drastically increased drug deposition efficiency (factor of 100). Furthermore, we developed a new and comfortable way to solubilize water-insoluble drugs in water |
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| Beschreibung: | Date Completed 04.03.2011 Date Revised 19.11.2015 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la103109b |