The effect of the concentration of cobalt ferrite (CoFe2O4) nanoparticles (NPs) on their intracellular location and distribution has been explored by synchrotron radiation X-ray and fluorescence microscopy (SR-XRF) monitoring the evolution of NPs elemental composition as well. In cells exposed to low concentrations of CoFe2O4 NPs, the NPs preferentially segregate in the perinuclear region preserving their
initial chemical content. At concentrations exceeding 500 μM the XRF spectra indicate the presence of Co and Fe also in the nuclear region, accompanied by sensible changes in the cellular morphology. The increase of the Co/Fe ratio measured in the nuclear compartment indicates that above certain concentrations the CoFe2O4 NPs intracellular distribution could be accompanied by biodegradation resulting in
Co accumulation in the nucleus.
MARMORATO Patrick;
CECCONE Giacomo;
GIANONCELLI Alessandra;
PASCOLO Lorella;
PONTI Jessica;
ROSSI Francois;
SALOME Murielle;
KAULICH Burkhard;
KISKINOVA Maya;
2011-11-15
ELSEVIER IRELAND LTD
JRC63266
0378-4274,
http://www.sciencedirect.com/science/article/pii/S037842741101513X,
https://publications.jrc.ec.europa.eu/repository/handle/JRC63266,
10.1016/j.toxlet.2011.08.026,
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