氧化应激
金属
细胞凋亡
材料科学
磷酸酶
兴奋剂
Atom(片上系统)
化学
酶
癌症研究
生物化学
光电子学
生物
冶金
计算机科学
嵌入式系统
作者
Yinjun Tang,Xupeng Liu,Pengcheng Qi,Yan Zhang,Li Wang,Ying Qin,Wenling Gu,Canglong Wang,Yao Sun,Chengzhou Zhu
出处
期刊:ACS Nano
[American Chemical Society]
日期:2024-09-02
标识
DOI:10.1021/acsnano.4c07851
摘要
Phosphates within tumors function as key biomolecules, playing a significant role in sustaining the viability of tumors. To disturb the homeostasis of cancer cells, regulating phosphate within the organism proves to be an effective strategy. Herein, we report single-atom Ce-doped Pt hydrides (Ce/Pt–H) with high phosphatase-like activity for phosphate hydrolysis. The resultant Ce/Pt–H exhibits a 26.90- and 6.25-fold increase in phosphatase-like activity in comparison to Ce/Pt and Pt–H, respectively. Mechanism investigations elucidate that the Ce Lewis acid site facilitates the coordination with phosphate groups, while the surface hydrides enhance the electron density of Pt for promoting catalytic ability in H2O cleavage and subsequent nucleophilic attack of hydroxyl groups. Finally, by leveraging its phosphatase-like activity, Ce/Pt–H can effectively regulate intracellular phosphates to disrupt redox homeostasis and amplify oxidative stress within cancer cells, ultimately leading to tumor apoptosis. This work provides fresh insights into noble-metal-based phosphatase mimics for inducing tumor apoptosis.
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