Article (Scientific journals)
Glucose-, pH- and thermo-responsive nanogels crosslinked by functional superparamagnetic maghemite nanoparticles as innovative drug delivery systems
Liu, Ji; Detrembleur, Christophe; Debuigne, Antoine et al.
2014In Journal of Materials Chemistry B, 2 (8), p. 1009-1023
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Keywords :
biomaterial; nanomedicine
Abstract :
[en] Reversibly crosslinked (RCL) nanogels made of thermo-responsive poly(vinyl alcohol)-b-poly(Nvinylcaprolactam) copolymers were combined with maghemite nanoparticles and developed as new drug delivery systems (DDS). The crosslinking was formed via boronate/diol bonding from the surfacefunctionalized superparamagnetic maghemite nanoparticles, endowing the DDS with thermo-, pH- and glucose-responsiveness. The capability to load a hydrophobic drug model Nile red (NR) within the RCL nanogels was evaluated, and stimuli-triggered drug release behaviours under different conditions were tested. Zero premature release behaviour was detected at physiological pH in the absence of glucose, whereas triggered release was observed upon exposure to acidic pH (5.0) and/or in the presence of glucose. In light of the superparamagnetic properties of the maghemite nanoparticles and RCL nanogels, magnetically-induced heating, MR imaging performance, as well as remotely magnetically-triggered drug release under alternating magnetic field (AMF), were investigated. Cytotoxicity against fibroblast-like L929 and human melanoma MEL-5 cell lines was assessed via the MTS assay. In vitro stimuli-triggered release of tamoxifen, a chemotherapeutic drug, was also studied within MEL-5 cell cultures under different conditions. These innovative RCL nanogels, integrating different stimuli-responsive components, hydrophobic chemotherapeutic moieties and also diagnostic agents together via reversible crosslinking, are promising new theranostic platforms.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Liu, Ji ;  Université de Liège - ULiège and University of Bordeaux > Department of Chemistry (Liège), ICMCB (Bordeaux) > Center for Education and Research on Macromolecules (CERM, LIège)
Detrembleur, Christophe ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Debuigne, Antoine  ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
De Pauw-Gillet, Marie-Claire ;  Université de Liège - ULiège > Laboratory of Mammalian Cell Culture (GIGA-R)
Mornet, Stéphane;  University of Bordeaux > ICMCB
Vander Elst, Luce;  University of Mons-Hainaut (UMH) > Department of General, Organic & Biomedical Chemistry > NMR & Molecular Imaging Laboratory
Laurent, Sophie;  University of Mons-Hainaut (UMH) > Department of General, Organic & Biomedical Chemistry > NMR & Molecular Imaging Laboratory
Duguet, Etienne;  University of Bordeaux > ICMCB
Jérôme, Christine  ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Glucose-, pH- and thermo-responsive nanogels crosslinked by functional superparamagnetic maghemite nanoparticles as innovative drug delivery systems
Publication date :
28 February 2014
Journal title :
Journal of Materials Chemistry B
ISSN :
2050-750X
eISSN :
2050-7518
Publisher :
Royal Society of Chemistry, United Kingdom
Volume :
2
Issue :
8
Pages :
1009-1023
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
The Erasmus Mundus International doctoral school IDS-FunMat
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Available on ORBi :
since 21 January 2014

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