聚 (酸) 颗粒与胺醇修饰用于二硫化物压力介导抗瘤转移
1College of Biomedical Engineering and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
ACS applied materials & interfaces
|June 10, 2025
概括
我们开发了新的纳米粒子,诱导二硫化物应激,导致编程细胞死亡并抑制癌症转移. 这种方法在开发新的抗转移性疗法方面显示出显著的前景.
科学领域:
- 生物化学 生物化学
- 纳米技术 纳米技术
- 在瘤学瘤学.
背景情况:
- 失硫化解症是一种被硫化物压力诱导的编程细胞死亡途径.
- 脱硫位症通过引起细胞骨崩为抗转移策略提供了潜在的可能性.
- 没有任何应用研究探讨了抗转移的dissulfidptosis.
研究的目的:
- 开发一种新的二硫化压力诱导剂,用于对抗瘤转移.
- 为了研究在抑制癌症扩散中,化移植的聚酸纳米颗粒 (NI@PSL) 的有效性.
主要方法:
- 合成NI@PSL纳米颗粒用于向药物输送.
- 研究了纳米粒子吸收,降解和涉及谷氨 (GSH) 和缺氧激活的缩酶的细胞内机制.
- 评估了NI@PSL对细胞迁移和细胞入侵in vitro的影响.
- 在B16F10瘤携带小鼠模型中评估了抗转移疗效.
主要成果:
- NI@PSL纳米颗粒被细胞有效吸收并降解,释放二脂酸 (DHLA) 和胺 (NI).
- DHLA与细胞骨的半氨酸醇形成异常的二硫化键,而NI的尼古丁胺氨酸二核酸盐 (NADPH) 耗尽导致了氧化还原失衡.
- 这导致了不可逆转的细胞骨崩,显著减少了B16F10细胞迁移 (12.8%) 和入侵 (7.0%) 在体外.
- 在小鼠模型中,NI@PSL治疗几乎消除了肺部和肝脏转移的焦点.
结论:
- NI@PSL纳米颗粒有效诱导二硫化和抑制瘤转移.
- 这项研究为利用二硫化物应激作为治疗癌症转移的治疗策略提供了坚实的基础.
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