Abstract
Photodynamic therapy (PDT) and photothermal therapy (PTT) combined treatment guided by imaging diagnosis has brought the cancer treatment into a new stage. But simple nanoplatforms with multifunctional therapeutic performance are rarely designed. Herein, we adopt ball-milling method to fabricate spherical BiAgOS nanoparticles as photosensitizer to apply for 808 nm near-infrared (NIR) light triggered PDT and PTT co-therapy. The polyethylene glycol (PEG) modified BiAgOS NPs show a great absorption in the range of visible light to near-infrared region. Under 808 nm laser irradiation, BiAgOS-PEG NPs have obvious photothermal and photosensitive effects together with excellent X-ray computed tomography (CT) imaging function. The in vitro and in vivo experiments exhibit that the BiAgOS-PEG NPs have good biocompatibility, excellent tumor cells inhibition effects simultaneously. Our finding described the first use of BiAgOS-PEG NPs as a semiconductor photosensitizer for anti-cancer treatment, providing a promising strategy to fabricate this kind of material for imaging guided NIR light induced combined tumor treatment.
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