癌细胞
化学
铜
癌症
癌症研究
癌症干细胞
鞣花酸
纳米技术
组合化学
生物化学
材料科学
抗氧化剂
生物
有机化学
遗传学
多酚
作者
Shuaijun Lu,Hailong Tian,Bowen Li,Lei Li,Hao Jiang,Yuxi Gao,Lin Zheng,Canhua Huang,Yuping Zhou,Zhongyan Du,Jia Xu
出处
期刊:Small
[Wiley]
日期:2023-12-03
被引量:2
标识
DOI:10.1002/smll.202309215
摘要
Drug resistance is one of the leading causes of treatment failure in current cancer chemotherapy. In addition to the classical drug efflux transporter-mediated chemoresistance, cancer cells with stemness features play a crucial role in escaping the maximum impact of chemotherapy. To sensitize cancer chemotherapy, in a novel approach, the hedgehog pathway inhibitor ellagic acid (EA) is coordinated with Cu2+ to develop nanoscale metal-organic frameworks (EA-Cu), which are then loaded with doxorubicin (DOX) and modified with targeted chondroitin sulfate (CS) to form the CS/E-C@DOX nanoplatform (CS/NPs). Notably, EA inhibits stemness maintenance by suppressing the hedgehog pathway, while Cu2+ further decreases stemness features of tumor cells by disrupting mitochondrial metabolism, effectively enhancing DOX-mediated chemotherapy. Meanwhile, EA can act synergistically with Cu2+ to cause mitochondrial dysfunction and cuproptosis, which effectively decreases ATP levels and subsequently suppresses the activity of P-glycoprotein (P-gp), thus reducing drug efflux and sensitizing DOX-mediated chemotherapy. Additionally, the attached CS endows CS/NPs with specific tumor targeting properties, whereas EA-Cu endows this nanoplatform with pH/glutathione (GSH) dual-responsive release behavior. Taken together, CS/NPs exhibited excellent antitumor effects by inducing cuproptosis and significantly inhibiting cancer cell stemness, which has great potential for overcoming cancer chemoresistance.
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