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Li W, Zhou X, Liu S, Zhou J, Ding H, Gai S, Li R, Zhong L, Jiang H, Yang P. Biodegradable Nanocatalyst with Self-Supplying Fenton-like Ions and H 2O 2 for Catalytic Cascade-Amplified Tumor Therapy. ACS Appl Mater Interfaces 2021; 13:50760-50773. [PMID: 34672620 DOI: 10.1021/acsami.1c14598] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Therapeutic nanosystems triggered by a specific tumor microenvironment (TME) offer excellent safety and selectivity in the treatment of cancer by in situ conversion of a less toxic substance into effective anticarcinogens. However, the inherent antioxidant systems, hypoxic environment, and insufficient hydrogen peroxide (H2O2) in tumor cells severely limit their efficacy. Herein, a new strategy has been developed by loading the chemotherapy prodrug disulfiram (DSF) and coating glucose oxidase (GOD) on the surface of Cu/ZIF-8 nanospheres and finally encapsulating manganese dioxide (MnO2) nanoshells to achieve efficient DSF-based cancer chemotherapy and dual-enhanced chemodynamic therapy (CDT). In an acidic TME, the nanocatalyst can biodegrade rapidly and accelerate the release of internal active substances. The outer layer of MnO2 depletes glutathione (GSH) to destroy the reactive oxygen defensive mechanisms and achieves continuous oxygen generation, thus enhancing the catalytic efficiency of GOD to burst H2O2. Benefiting from the chelation reaction between the released Cu2+ and DSF, a large amount of cytotoxic CuET products is generated, and the Cu+ are concurrently released, thereby achieving efficient chemotherapy and satisfactory CDT efficacy. Furthermore, the release of Mn2+ can initiate magnetic resonance imaging signals for the tracking of the nanocatalyst.
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Affiliation(s)
- Wenting Li
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Xinglu Zhou
- Department of PET/CT Center, Harbin Medical University Cancer Hospital, Harbin 150081, China
- Department of Radiology, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Shikai Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Jialing Zhou
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - He Ding
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Shili Gai
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Rumin Li
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
| | - Lei Zhong
- Department of Breast Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, PR China
| | - Huijie Jiang
- Department of Radiology, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Piaoping Yang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
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