Micron-sized iron oxide particles for both MRI cell tracking and magnetic fluid hyperthermia treatment - Archive ouverte HAL Access content directly
Journal Articles Scientific Reports Year : 2021

Micron-sized iron oxide particles for both MRI cell tracking and magnetic fluid hyperthermia treatment

Abstract

Abstract Iron oxide particles (IOP) are commonly used for Cellular Magnetic Resonance Imaging (MRI) and in combination with several treatments, like Magnetic Fluid Hyperthermia (MFH), due to the rise in temperature they provoke under an Alternating Magnetic Field (AMF). Micrometric IOP have a high sensitivity of detection. Nevertheless, little is known about their internalization processes or their potential heat power. Two micrometric commercial IOP (from Bangs Laboratories and Chemicell) were characterized by Transmission Electron Microscopy (TEM) and their endocytic pathways into glioma cells were analyzed. Their Specific Absorption Rate (SAR) and cytotoxicity were evaluated using a commercial AMF inductor. T2-weighted imaging was used to monitor tumor growth in vivo after MFH treatment in mice. The two micron-sized IOP had similar structures and r 2 relaxivities (100 mM −1 s −1 ) but involved different endocytic pathways. Only ScreenMAG particles generated a significant rise in temperature following AMF (SAR = 113 W g −1 Fe). After 1 h of AMF exposure, 60% of ScreenMAG-labeled cells died. Translated to a glioma model, 89% of mice responded to the treatment with smaller tumor volume 42 days post-implantation. Micrometric particles were investigated from their characterization to their intracellular internalization pathways and applied in one in vivo cancer treatment, i.e. MFH.
Fichier principal
Vignette du fichier
Dallet et al. - 2021 - Micron-sized iron oxide particles for both MRI cel.pdf (4.19 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03366108 , version 1 (05-10-2021)

Identifiers

Cite

Laurence Dallet, Dimitri Stanicki, Pierre Voisin, Sylvain Miraux, Emeline Ribot. Micron-sized iron oxide particles for both MRI cell tracking and magnetic fluid hyperthermia treatment. Scientific Reports, 2021, 11, pp.3286. ⟨10.1038/s41598-021-82095-6⟩. ⟨hal-03366108⟩

Collections

CNRS CRMSB
10 View
20 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More