Abstract
Prussian blue (PB) as a clinically adapted agent recently has drawn much attention in cancer theranostics for potential applications in magnetic resonance (MR) imaging as well as photothermal cancer treatment. In this work, we take a closer look at the imaging and therapy performance of PB agents once they are doped with Mn2+. It is found that Mn2+-doped PB nanocubes exhibit increased longitudinal relaxivity along with enhanced optical absorption red-shifted to the near-infrared (NIR) region. Those properties make PB:Mn nanocubes with appropriate surface coatings rather attractive agents for biomedical imaging and cancer therapy, which have been successfully demonstrated in our in vivo experiments for effectively tumor ablation.
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