Multifunctional Near-Infrared Dye–Magnetic Nanoparticles for Bioimaging and Cancer Therapy

Theranostics based on nanoparticles have developed rapidly in the past decade and have been widely used in the diagnosis and treatment of liver cancer, breast cancer, and other tumors. However, for skin cancers, there are limited studies. In the present study, we successfully synthesized a theranostic nanoparticle by grating IR820 onto the surface of chitosan-coated magnetic iron oxide, IR820-CS-Fe3O4, showing an excellent magnetic resonance imaging (MRI) capability and cytotoxic effects against melanoma under irradiation with a near-infrared (NIR) laser (808 nm) in vitro.

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