Metal–organic framework-based pH/NIR dual-responsive nanoparticles for combined photothermal/photodynamic therapy and chemotherapy of cancer.

Autor: Huang, Lihua, Luo, Ying, Cong, Yiyang, Liu, Jia, Xu, Caiyan, Zeng, Zhaoxiang, Yin, Yihua, Hong, Hao, Xu, Wenjin
Předmět:
Zdroj: New Journal of Chemistry; 5/21/2024, Vol. 48 Issue 19, p8773-8788, 16p
Abstrakt: Metal–organic frameworks (MOFs) are unique coordination polymers that have emerged as important candidates for drug delivery in recent years. Herein, we designed a drug delivery system for multi-modal combination therapy (IR-820/DOX@MIL-101-PDA-PEG-F3, simplified as ID@MIL-PPF3). In this study, pH-sensitive nanocarriers MIL-101(Fe) were prepared and loaded with the effective chemotherapy agent doxorubicin (DOX) and the phototherapeutic reagent new indocyanine green (IR-820) using a physical adsorption method. Dopamine was spontaneously polymerized in alkaline solutions to form a hybrid coating on MIL-101(Fe) (denoted as ID@MIL-101-PDA). The surface of ID@MIL-101-PDA was functionalized by the synthesized polymer NH2-PEG-OCH3/F3 to obtain ID@MIL-PPF3. Characterization results show that ID@MIL-PPF3 has a good drug loading rate (27.7%) and photothermal conversion efficiency (28.89%). In addition, Fe3+ released from MIL-101(Fe) can engage in a Fenton-like reaction to generate hydroxyl radicals (˙OH) to realize chemodynamic therapy (CDT). ID@MIL-PPF3 not only demonstrates the ability to intelligently release drugs, but also realizes chemotherapy combined with PDT/PTT/CDT therapy for tumor cells, which was proved by in vitro evaluation. In conclusion, ID@MIL-PPF3 provides a new idea and method for building a multi-modal combination therapy targeted drug delivery platform. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index