活性氧
单线态氧
过氧化氢酶
卟啉
氧气
催化作用
激进的
光化学
氧化应激
化学
生物物理学
生物
生物化学
有机化学
作者
Jing Zhu,Tao Ding,Kaifei Jin,Yuxin Xing,Jixi Zhang,Daqing Xia,Kaiyong Cai,Jixi Zhang
出处
期刊:View
[Wiley]
日期:2022-11-23
卷期号:3 (6)
被引量:10
摘要
Abstract Reactive oxygen species (ROS) driven endoplasmic reticulum (ER) stress is highly promising for tumor therapy but restrained by the nondurable introduction and limited lifetime of oxidative species. Here, a therapeutic nanosystem with sustainable ROS generation ability was developed by accommodating luminol derivatives (L012) in hyaluronic acid‐modified metal‐organic frameworks of Fe 3+ and porphyrin ligand (TCPP). After particle accumulation in the tumor, ∙OH radicals from Fe 3+ sites catalyzed conversion of H 2 O 2 can react with confined L012 transducers to generate chemiluminescence (CL). Because of the distance constraints, the CL energy was significantly extracted (96%) by adjacent TCPP and further activate oxygen to long‐lifetime singlet oxygen ( 1 O 2 ), whose yield can be further boosted by the catalase‐like activity of the frameworks. By regulating the substrate consumption through energy conversion, the cascade process resulted in increased ROS levels (2.4‐fold) and sustainable oxidation (24 h), which induced continuously accumulated ER stress, high autophagic levels, and amplified lethality against the tumor. This work opens a new avenue to explore reticular nanostructures with complementarily arranged and synergistically spaced conversion units in advancing ROS therapy.
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