[180971] |
Title: Development of long circulating magnetic particle imaging tracers: use of novel magnetic nanoparticles and entrapment into human erythrocytesDevelopment of long circulating magnetic particle imaging tracers: use of novel magnetic nanoparticles and entrapm. |
Written by: A. Antonelli, P. Szwargulski, E. S. Scarpa, F. Thieben, C. Grüttner, G. Ambrosi, L. Guidi, P. Ludewig, T. Knopp and M. Magnani |
in: <em>Nanomedicine</em>. April (2020). |
Volume: <strong>15</strong>. Number: (8), |
on pages: 739-753 |
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Publisher: Future Medicine Ltd: |
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URL: https://doi.org/10.2217/nnm-2019-0449 |
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Abstract: Aim: Magnetic particle imaging (MPI) is highly promising for biomedical applications, but optimal tracers for MPI, namely superparamagnetic iron oxide-based contrast agents, are still lacking. Materials & methods: The encapsulation of commercially available nanoparticles, specifically synomag®-D and perimag®, into human red blood cells (RBCs) was performed by a hypotonic dialysis and isotonic resealing procedure. The amounts of superparamagnetic iron oxide incorporated into RBCs were determined by Fe quantification using nuclear magnetic resonance and magnetic particle spectroscopy. Results: Perimag-COOH nanoparticles were identified as the best nanomaterial for encapsulation in RBCs. Perimag-COOH-loaded RBCs proved to be viable cells showing a good magnetic particle spectroscopy performance, while the magnetic signal of synomag-D-COOH-loaded RBCs dropped sharply. Conclusion: Perimag-COOH-loaded RBCs could be a potential tool for MPI diagnostic applications.