期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 311, 期 1, 页码 234-237出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2006.11.203
关键词
magnetic nanoparticle; MNP; iron oxide particle; magnetoliposome; cell tracking
A challenge for future applications in nanotechnology is the functional integration of nano-sized materials into cellular structures. Here we investigated superparamagnetic Fe3O4 iron oxide nanoparticles coated with a lipid bilayer for uptake into cells and for targeting subcellular compartments. It was found that magnetic nanoparticles (MNPs) are effectively taken up into cells and make cells acquire magnetic activity. Biotin-conjugated MNPs were further functionalized by binding of the fluorescent tag streptavidin-fluorescein isothiocyanate (FITC) and, following uptake into cells, shown to confer magnetic activity and fluorescence labeling. Such FITC-MNPs were localized in the lysosomal compartment of cells which suggests a receptor-mediated uptake mechanism. (C) 2006 Elsevier B.V. All rights reserved.
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