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Biocompatible hypocrellin A-Fe(iii) nanoparticles exhibiting efficient photo-activated CDT in vitro and in vivo

DALTON TRANSACTIONS(2022)

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Abstract
Chemodynamic therapy (CDT) is novel and promising for cancer treatment, however, the potential systematic toxicity of the used nanoparticles is still a big concern. In this work the biocompatible hypocrellin A-Fe(iii) nanoparticles (HA-Fe(iii) NPs) were synthesized and studied. The CDT effect of HA-Fe(iii) NPs in the dark is negligible but can be photo-activated upon red light irradiation, which is meaningful to realize precise CDT treatment by selective light irradiation. Moreover, HA-Fe(iii) NPs can also generate O-2(-), which may be converted into H2O2 to further enhance the CDT effect. As a result, HA-Fe(iii) NPs had little cytotoxicity in the dark at the concentration up to 200 mu g ml(-1), but exhibited efficient CDT activity upon red light irradiation under both normoxic and hypoxic conditions. The in vivo results also showed that HA-Fe(iii) NPs can efficiently inhibit tumor growth upon 628 nm light irradiation.
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Key words
Biomimetic Nanoparticles,Photodynamic Therapy
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