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An endogenous oxygen self-supplied nanoplatform with GSH-depleted and NIR-II triggered electron–hole separation for enhanced photocatalytic anti-tumor therapy
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2024-08-30 , DOI: 10.1039/d4cp02554g
Yao Huang 1, 2 , Hanlin Wei 2 , Hui Feng 3 , Fengyu Tian 2 , Qi Zheng 4 , Zhiming Deng 2
Affiliation  

The use of artificial enzymes and light energy in photocatalytic therapy, a developing drug-free therapeutic approach, can treat malignant tumors in vivo. However, the relatively deficient oxygen concentration in the tumor microenvironment (TME) restrains their further tumor treatment capability. Herein, a novel nanoplatform with Cu7S4@Au nanocatalyst coated by MnO2 was successfully designed. After 1064 nm light irradiation, the designed nanocatalyst can promote the separation of light generated electron–hole pairs, resulting in ROS generation and tumor cell apoptosis. The MnO2 shelled nanoplatform can function as a TME-responsive oxygen self-supplied producer to improve photocatalyst treatment and GSH depletion. In summary, the designed novel nanoplatform shows efficient inhibition of tumor growth via GSH depletion and synergistic photocatalytic therapy, which is of great significance for improving the clinical tumor treatment effect.

中文翻译:


内源性氧自供纳米平台,具有耗尽谷胱甘肽和近红外-II触发的电子空穴分离,用于增强光催化抗肿瘤治疗



光催化疗法中使用人工酶和光能是一种正在发展的无药物治疗方法,可以治疗体内恶性肿瘤。然而,肿瘤微环境(TME)中相对缺乏的氧气浓度限制了它们进一步的肿瘤治疗能力。在此,成功设计了一种具有MnO 2涂层的Cu 7 S 4 @Au纳米催化剂的新型纳米平台。在1064 nm光照射后,设计的纳米催化剂可以促进光产生的电子空穴对的分离,从而导致ROS的产生和肿瘤细胞凋亡。 MnO 2壳纳米平台可以作为TME响应的自供氧发生器,以改善光催化剂处理和GSH消耗。综上所述,所设计的新型纳米平台通过消耗GSH和协同光催化疗法有效抑制肿瘤生长,这对于提高临床肿瘤治疗效果具有重要意义。
更新日期:2024-08-30
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