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铜离子体-自干扰纳米调节器用于瘤自我防御重编程以放大囊性压力和抗瘤免疫力
Enze Li1, Liewei Wen2, Caiyun Yin1
1State Key Laboratory of Mechanism and Quality Research of Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China.
概括
这项研究引入了一种新型的纳米调节器,通过将癌细胞过载铜并阻断自,从而增强铜亡 (依赖铜的细胞死亡). 这种双重方法可以提高抗瘤免疫力,从而改善癌症治疗.
科学领域:
- 生物化学和分子生物学
- 纳米医学是一种纳米医学.
- 癌症治疗方法 癌症治疗方法
背景情况:
- cuproptosis 是一种依赖铜的细胞死亡,对癌症治疗有希望,但受到癌症的防御机制 (如低铜水平和自) 的阻碍.
- 开发克服这些内在癌症防御的策略对于有效的基于cuproptosis的疗法至关重要.
研究的目的:
- 为了开发一个自我放大的cuproptosis纳米调节器 (SC/TpA@HA) 用于向的癌症治疗.
- 通过克服细胞抵抗机制并同时触发抗瘤免疫反应来增强cuproptosis.
主要方法:
- 设计了一种纳米调节器,集成了shikonin-copper复合体和CRISPR/Cas9针对ATG5进行CD44介导的传递.
- 利用石康宁-铜释放用于铜过载,诱导DLAT寡合化,FeS集群不稳定和TCA循环崩.
- 采用CRISPR/Cas9来淘汰ATG5,抑制自并为受损的线粒体创建自流陷.
主要成果:
- 该纳米调节器通过铜过载成功诱导了cuproptosis,并通过自阻塞损害了细胞损伤清除.
- 自抑制放大了cuproptosis和潜在的免疫细胞死亡,由calreticulin暴露和HMGB1释放证明.
- 由于ATG5删除介导的ULK1/2信号封锁,观察到增强的抗瘤免疫反应,包括增加的细胞毒性T淋巴细胞透.
结论:
- 开发的纳米调节器通过双重干预策略有效地增强了cuproptosis和抗瘤免疫力.
- 这种方法通过克服抵抗机制和刺激免疫反应,为癌症治疗提供了一种创新的治疗途径.
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