过氧亚硝酸盐
药物输送
癌症研究
化学
顺铂
坏死性下垂
化疗
医学
药理学
细胞凋亡
材料科学
生物化学
程序性细胞死亡
纳米技术
酶
外科
超氧化物
作者
Ying Chen,Duo Li,Pei Pan,Run‐Yao Zeng,Xian‐Zheng Zhang
出处
期刊:ACS Nano
[American Chemical Society]
日期:2021-07-18
卷期号:15 (7): 11514-11525
被引量:27
标识
DOI:10.1021/acsnano.1c01312
摘要
Multiple biological barriers in solid tumors severely restrict the penetration of nanomedicines, which is a main cause for therapeutic failure in traditional tumor treatment. Here, a tumor-specific nanogenerator of peroxynitrite (ONOO-), prepared by loading cisplatin and sodium nitroprusside into poly(d,l-lactide-co-glycolide) polymersomes, was designed to improve drug delivery and enhance tumor chemotherapy. After a cascade of nicotinamide adenine dinucleotide phosphate oxidases catalysis and glutathione reduction, the nanogenerator, namely, PMCS, could selectively induce the generation of ONOO- in tumor. The generated ONOO- could not only strengthen vascular permeability significantly but also improve the accumulation and penetration of PMCS in tumor by activating matrix metalloproteinases-mediated degradation of extracellular matrix. Along with endocytosis, PMCS released cisplatin to induce tumor cell apoptosis. Moreover, free cisplatin liberated from dead cells infected neighboring tumor cells quickly via ONOO--mediated up-regulated copper transporter 1, further amplifying chemotherapeutic efficacy. This study advances ONOO- as a potent modality to address the main issues of therapeutic delivery, including but not limited to chemotherapy.
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