Journal
DALTON TRANSACTIONS
Volume 51, Issue 8, Pages 3225-3233Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt03608d
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Funding
- National Key R&D Program of China [2018YFC1602204]
- NSFC [21571181, 21773277]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB17000000]
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Chemodynamic therapy using biocompatible hypocrellin A-Fe(iii) nanoparticles (HA-Fe(iii) NPs) shows promise for cancer treatment. These nanoparticles can be photo-activated by red light and generate reactive oxygen species (ROS), enhancing the effectiveness of CDT. In vivo experiments also demonstrate that HA-Fe(iii) NPs efficiently inhibit tumor growth upon red light irradiation at 628 nm.
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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