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Thermochemotherapy Mediated by Novel Solar-Planet Structured Magnetic Nanocomposites for Glioma Treatment

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Cancer comprehensive treatment has been fully recognized as it can provide an effective multimodality approach for fighting cancers. This work evaluates the effects of a kind of novel solar-planet structured magnetic nanocomposites (MNCs) for magnetic thermochemotherapy. Amino silane coated magnetic nanoparticles (MNPs) as agent of magnetic mediated hyperthermia (MMH) for cancer treatment were prepared by the chemical precipitation method. Docetaxel (an anticancer drug) loaded polymeric nanoparticles (DNPs) composed of carboxylic-terminated poly (D,L-lactic-co-glycolic acid) (PLGA) with Vitamin E TPGS as emulsifier for sustained drug release were prepared by a modified solvent extraction/evaporation technique. Furthermore, the MNPs modified with amino groups could be covalently attached to the surface of carboxylic terminated DNPs to form the so-called solar-planet structured MNCs by 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide (EDC) and N-hydroxysuccinimide (NHS) crosslinking. The prepared solar-planet structure has been confirmed by fluorescent observation. Inductive heating property of the nanocomposite was evaluation by monitoring the temperature increase of the MNCs suspension under alternative magnetic field (AMF). Drug encapsulation efficacy and drug release of the magnetic nanocomposite were conducted by high performance liquid chromatography (HPLC). In vitro evaluation of the novel nanocomposite as mediator for thermochemotherapy was conducted on the U251 human glioma cells and the synergistic effect between MMH and docetaxel chemotherapy was confirmed. All the observation supports that solar-planet structured MNC is a novel and effective mediator for magnetic thermochemotherapy. The MNCs can realize cancer comprehensive treatment thus has great potential in clinical application.
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Keywords: CANCER COMPREHENSIVE TREATMENT; DOCETAXEL; MAGNETIC HYPERTHERMIA; MAGNETIC NANOCOMPOSITES; THERMOCHEMOTHERAPY

Document Type: Research Article

Publication date: 2012-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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