自动触发的热电纳米异构连接用于癌症催化和免疫治疗
Xue Yuan1, Yong Kang1, Jinrui Dong1
1Academy of Medical Engineering and Translational Medicine, Medical College, Tianjin University, 300072, Tianjin, China.
Nature communications
|August 23, 2023
概括
这项研究引入了一种新型的纳米 heterojunction 在瘤微环境 (TME) 中自我激活,以产生活性氧物种并提高水平. 这种方法有效地通过结合催化,离子干扰和免疫治疗策略来对抗瘤.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 催化疗法由于外源刺激需求和电子孔重组而面临局限性.
- 开发克服这些局限性的自我触发治疗剂对于有效的癌症治疗至关重要.
研究的目的:
- 为增强癌症治疗制造瘤微环境 (TME) 特定的自触发热电纳米 heterojunction (BST/CaO2 NSs).
- 研究热电,反应性氧物种 (ROS) 生成,离子干扰和免疫疗法的协同效应.
主要方法:
- 制造具有内置电场用于电荷分离的Bi0.5Sb1.5Te3/CaO2纳米片 (BST/CaO2 NSs).
- 研究TME触发的CaO2涂层的水解,释放Ca2+,H2O2和热量.
- 利用 BST NSs 的热电效应用于 ROS 生产和过载介导疗法.
主要成果:
- 纳米异质连接证明了TME特定的自我激活,产生ROS和热量.
- CaO2水解释放出Ca2+和H2O2,增强ROS产量并诱导过载.
- Ca2+促进了树突细胞成熟和抗原呈现,促进了免疫治疗.
- 该系统在雌性小鼠中表现出色的抗瘤性能,在正常细胞中具有最小的不良影响.
结论:
- 开发的TME特异性自触发热电纳米异构连接为联合癌症治疗提供了一个有前途的平台.
- 这种方法有效地整合了催化疗法,离子干扰疗法和免疫疗法,以获得卓越的抗瘤疗效.
- 自动触发机制和TME特异性最大限度地降低了非目标效应,提高了治疗安全性.
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