Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China.
ACS Appl Bio Mater. 2021 May 17;4(5):4413-4421. doi: 10.1021/acsabm.1c00174. Epub 2021 Apr 15.
The antitumor efficacy of photodynamic therapy (PDT) is greatly impeded by the nonspecific targeting of photosensitizers and limited oxygen supply in hypoxic tumors. Aiming to overcome the problem, a dual-locked porphyrin/enzyme-loading zeolitic imidazolate framework (ZIF) nanoplatform was constructed for starvation therapy and O self-sufficient PDT. The fluorescence recovery and PDT of photosensitizers could be cooperatively triggered by dual pathological parameters, the low pH and overexpressed GSH in tumor tissues, which makes the PDT process conduct precisely in a tumor microenvironment. The cascade catalysis of glucose oxidase and catalase promotes the nanoplatform dissociation, inhibits the energy supply of tumors (starvation therapy), and provides enough O to ameliorate the hypoxia and enhance PDT efficacy. and studies were performed to confirm the high antitumor efficacy of the porphyrin/enzyme-loading ZIF nanoplatform. Thus, this work offers a path for precise and efficient PDT-based combination therapy against a hypoxia tumor.
光动力疗法(PDT)的抗肿瘤疗效受到光敏剂的非特异性靶向和缺氧肿瘤中氧气供应有限的极大阻碍。为了克服这个问题,构建了一种双锁载卟啉/酶沸石咪唑骨架(ZIF)纳米平台,用于饥饿治疗和 O 自足 PDT。荧光恢复和 PDT 可以通过两个病理参数共同触发,即肿瘤组织中的低 pH 值和过表达的 GSH,这使得 PDT 过程能够在肿瘤微环境中精确进行。葡萄糖氧化酶和过氧化氢酶的级联催化促进纳米平台的解离,抑制肿瘤的能量供应(饥饿治疗),并提供足够的 O 来改善缺氧并增强 PDT 疗效。 和 研究证实了载卟啉/酶 ZIF 纳米平台的高效抗肿瘤作用。因此,这项工作为针对缺氧肿瘤的精确高效 PDT 联合治疗提供了一条途径。
J Mater Chem B. 2021-7-28
ACS Appl Mater Interfaces. 2024-9-25
J Mater Chem B. 2021-9-7
Cancer Metastasis Rev. 2025-5-10
Cell Death Dis. 2022-2-26