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埃莱斯克洛莫尔装载的氧化铜纳米平台触发了cuproptosis,以增强抗瘤免疫疗法
Xufeng Lu1,2, Xiaodong Chen3,4, Chengyin Lin3
1Department of Gastrointestinal Surgery, Zhejiang International Scientific and Technological Cooperation Base of Translational Cancer Research, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 2, 2024
概括
这项研究引入了一种用于癌症治疗的新型纳米系统. 该系统有效诱导铜 (依赖铜的细胞死亡) 并增强免疫疗法,显示出抗瘤治疗的重大前景.
科学领域:
- 生物医学工程 生物医学工程
- 癌症研究 癌症研究
- 免疫治疗是一种免疫疗法.
背景情况:
- 铜,一种依赖铜的细胞死亡途径,为癌症治疗提供了一条新的途径.
- cuproptosis 的有效诱导需要足够的细胞内铜离子 (Cu2+) 在瘤细胞中的积累.
研究的目的:
- 开发一种智能纳米系统,用于有针对性的铜输送和 cuproptosis 诱导.
- 评估单独纳米系统和与免疫治疗结合的协同抗瘤效应.
主要方法:
- 通过将氧化铜 (CuO) 纳米粒子与 elesclomol (ES) 封装,构建一个纳米系统 (ES@CuO).
- 在实验室和体内评估ES@CuO在小鼠B16黑色素瘤模型中诱导cuproptosis和抑制瘤生长的能力.
- 评估ES@CuO对瘤免疫微环境的影响及其与PD-1免疫疗法的联合疗效.
主要成果:
- 该ES@CuO纳米系统成功地将铜离子和elasclomol输入瘤细胞,触发协同性cuproptosis并抑制瘤生长.
- ES@CuO治疗增强了抗瘤免疫反应,增加了瘤透的淋巴细胞和炎症性细胞因子,从而重新编程了免疫抑制瘤微环境.
- ES@CuO与PD-1免疫疗法的联合治疗显著改善了小鼠黑色素瘤的抗瘤疗效.
结论:
- 开发的ES@CuO纳米系统代表了 cuproptosis介导的抗瘤治疗的有希望的策略.
- 这种新的方法有可能提高免疫检查点抑制剂疗法的疗效,为癌症治疗提供新的方向.
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