可生物降解的基于Cu的sonozymes用于通过激活cGAS-STING通路并使免疫检查点阻塞敏感,增强瘤特异性的cuproptosis增强的sono-immunotherapy
Yue Wu1,2, Shangwei Xu1,2, Jinming Cai3
1Department of Thoracic Surgery, Huadong Hospital, Fudan University, Shanghai, 200040, China.
Materials today. Bio
|October 27, 2025
概括
这项研究引入了一种新的生物降解的铜基索诺酶,通过结合活性氧物种 (ROS) 介导的细胞死亡,免疫检查点阻塞,cuproptosis和cGAS-STING通路激活来触发抗瘤免疫反应,以加强癌症治疗.
科学领域:
- 生物医学工程 生物医学工程
- 免疫学 免疫学 免疫学
- 材料科学 材料科学 材料科学
背景情况:
- 树突细胞 (DC) 成熟对适应性免疫至关重要,但被瘤微环境 (TME) 抑制.
- 现有的癌症免疫疗法因免疫抑制性TME和有限的向药物输送而面临挑战.
- 开发克服TME诱导免疫抑制的策略对于有效的癌症治疗至关重要.
研究的目的:
- 为增强抗瘤免疫反应开发一种对TME有反应的,可生物降解的基于铜的sonozyme.
- 整合多种治疗方式,包括ROS介导的免疫细胞死亡 (ICD),免疫检查点阻塞 (ICB),cuproptosis和cGAS-STING激活.
- 为了实现瘤特异性药物释放,并提高声免疫疗法的疗效.
主要方法:
- 从Cu2O纳米立方体中合成对TME敏感的Cu3P共酶,通过in-situ化.
- 在Cu3P纳米立方体上加载抗瘤三烯酸 (Cel) 以释放瘤特异性药物.
- 评估Cu3P声酶的声动力学和化学动力学活动,cuproptosis诱导,ICD,PD-L1表达调制和cGAS-STING通路激活.
主要成果:
- Cu3P纳米立方体显示TME响应性降解,使瘤特异性药物释放.
- 观察到Cu3P声酶的增强的声动力学和化学动力学活动.
- 该策略成功地通过ROS生成和瘤特异性cuproptosis逆转了TME免疫抑制,诱导ICD和敏感化ICB治疗.
- 对cGAS-STING通路的cuproptosis激活导致扩大了抗瘤免疫反应.
结论:
- 开发的可生物降解Cu3P Sonozyme为声免疫疗法提供了一个有前途的平台.
- 这种方法通过级放大策略有效地克服了TME诱导的免疫抑制.
- 结合cuproptosis,ICD,ICB和cGAS-STING激活,为增强癌症治疗提供了一个新的策略.
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