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Title

In-situ particles reorientation during magnetic hyperthermia application: Shape matters twice

AuthorsSimeonidis, Konstantinos; Morales, M. P. ; Marciello, Marzia ; Angelakeris, Makis; Presa, Patricia de la ; Lázaro-Carrillo, Ana; Tabero, Andrea; Villanueva, Ángeles; Chubykalo-Fesenko, O. ; Serantes, David
Issue Date2016
PublisherSpringer Nature
CitationScientific Reports 6: 38382 (2016)
AbstractPromising advances in nanomedicine such as magnetic hyperthermia rely on a precise control of the nanoparticle performance in the cellular environment. This constitutes a huge research challenge due to difficulties for achieving a remote control within the human body. Here we report on the significant double role of the shape of ellipsoidal magnetic nanoparticles (nanorods) subjected to an external AC magnetic field: first, the heat release is increased due to the additional shape anisotropy; second, the rods dynamically reorientate in the orthogonal direction to the AC field direction. Importantly, the heating performance and the directional orientation occur in synergy and can be easily controlled by changing the AC field treatment duration, thus opening the pathway to combined hyperthermic/mechanical nanoactuators for biomedicine. Preliminary studies demonstrate the high accumulation of nanorods into HeLa cells whereas viability analysis supports their low toxicity and the absence of apoptotic or necrotic cell death after 24 or 48 h of incubation.
Publisher version (URL)http://doi.org/10.1038/srep38382
URIhttp://hdl.handle.net/10261/156130
DOIhttp://dx.doi.org/10.1038/srep38382
ISSN2045-2322
Appears in Collections:(ICMM) Artículos
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