阿托瓦昆协调的铜聚纳米平台为协同性缩和缩协调了双重代谢干扰
Yuxin Qin1, Huiying Lu1, Yang Shu1
1Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China.
ACS applied materials & interfaces
|March 27, 2025
概括
这项研究引入了一种新的双重代谢干扰策略,以克服瘤抵抗力并增强依赖铜的细胞死亡 (亡). 这种方法通过向铁硫聚蛋白和氧化酸化,有效地抑制瘤生长.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 铜,一种依赖铜的细胞死亡,通过谷氨 (GSH) 和缺氧,面临来自瘤微环境 (TME) 的抵抗.
- 瘤抵抗机制包括GSH介导的铜解毒和缺氧诱导的代谢适应.
研究的目的:
- 开发一种"双重代谢干扰"的策略,以放大cuproptosis.
- 在癌症治疗中克服TME驱动的耐药性.
- 为了协同准铁硫 (Fe-S) 集群蛋白,并抑制氧化酸化 (OXPHOS).
主要方法:
- 使用铜-石康宁协调网络 (CuSK),阿托瓦昆 (ATO) 和氨酸 (HA) 构建了一个对TME有反应的纳米平台 (ACH NPs).
- 研究了铜离子 (Cu+/Cu2+),ATO和希可宁 (SK) 对GSH/酸触发释放的协同作用.
- 评估了对二利胺转化酶 (DLAT),线粒体复合体,ATP合成,活性氧物种 (ROS) 生成和亡的影响.
主要成果:
- 通过过载铜和抑制OXPHOS,ACH NPs证明了不可逆转损害的协同诱导.
- 铜过载导致DLAT聚合和Fe-S集群损失,破坏了线粒体功能.
- ATO抑制了复合III活性,加剧了代谢危机,而Cu+/SK产生了基,激活了Caspase-3依赖的亡.
- 在体内研究显示显著的瘤生长抑制 (86.8%).
结论:
- 双重代谢干扰策略有效地放大了cuproptosis,并克服了TME驱动的抵抗.
- 这种方法为癌症治疗提供了一个有希望的范式,通过准金属稳态和代谢脆弱性来治疗癌症.
- 这些发现扩大了对cuproptosis及其治疗潜力的理解.
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