光动力疗法
吲哚青绿
肿瘤微环境
化学
单线态氧
癌症研究
过氧化氢
光敏剂
活性氧
癌细胞
肿瘤缺氧
缺氧(环境)
细胞凋亡
癌症
光化学
肿瘤细胞
医学
氧气
放射治疗
生物化学
病理
内科学
有机化学
作者
Fan Jiang,Yajie Zhao,Chunzheng Yang,Ziyong Cheng,Min Liu,Bengang Xing,Binbin Ding,Ping’an Ma,Jun Lin
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:51 (7): 2798-2804
被引量:17
摘要
Hypoxia and the overexpression of hydrogen peroxide (H2O2) in the tumor microenvironment (TME) are conducive to cancer cell proliferation, which greatly hinders cancer treatment. Here, we design a novel TME-responsive therapeutic nanoplatform Co/ZIF-8/ICG/Pt (CZIP) to achieve chemodynamic therapy (CDT) and enhanced photodynamic therapy (PDT). In this nanoplatform, under near-infrared light (NIR) irradiation, the photosensitizer indocyanine green (ICG) can generate singlet oxygen (1O2) for cancer cell apoptosis. Meanwhile, overexpressed H2O2 in the TME could be catalyzed to generate O2 by the loaded Pt to relieve tumor hypoxia and promote the PDT-induced 1O2 production. In addition, the doped Co2+ could react with H2O2 to produce hydroxyl radicals (˙OH) for CDT. The multifunctional nanoplatform CZIP showed high biosafety and a good antitumor effect, which would provide a new route for cancer therapy.
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