弹性电力增强的核心外纳米颗粒具有自我放大的芬顿式活性,用于瘤焦催化免疫疗法
Peiran Chen1, Chao Qi1, Ke Zhang1
1Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
Biomaterials
|November 19, 2025
概括
研究人员开发了增强型压电材料 (Cu-BTO) 用于压催化疗法. 这些材料显著促进了反应性氧物种的产生,从而改善了瘤抑制和转移的预防.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 生物医学工程 生物医学工程
背景情况:
- 压触媒疗法使用超声波激活的压电材料来产生用于治疗应用的活性氧物种 (ROS).
- 当前压电材料的有效性受到其ROS产生能力的限制.
- 开发具有增强性能的新型压电材料对于推进压催化疗法的发展至关重要.
研究的目的:
- 为了工程 Cu$_{x}$Ba$_{1-x}$TiO_{3}$-shell结构的 BaTiO_{3}$ (Cu-BTO) 压电纳米材料.
- 诱导柔电性质并增强压电和压催化性能.
- 在瘤模型中研究Cu-BTO的治疗疗效.
主要方法:
- 使用渐变离子替代策略来合成Cu-BTO材料.
- 在BTO表面上诱导了从晶体转变为无形和再结晶的相变.
- 在超声波刺激下评估了Cu-BTO的压电和压触媒特性.
- 抗瘤免疫反应和治疗效果在体内进行了评估.
主要成果:
- 立方BTO表现出显著增强的压电特性,其d$_{33}$值增加了345.93%至129.91 pm/V.
- -BTO表现出增强的焦催化活性,产生ROS (OH和H2O) 和促进芬顿式催化.
- 在体内研究显示,瘤抑制率为83.7%,有效预防肺转移.
- Cu-BTO诱导免疫细胞死亡,树突细胞成熟和T细胞激活.
结论:
- 开发的Cu-BTO材料由于诱导的柔电性和增强的格子不对称性,显示出优越的压电和压触媒性能.
- Cu-BTO有效触发抗瘤免疫反应,并实现显著的瘤抑制.
- 这项研究提供了一种新的方法来诱导压电纳米材料的柔电性,并提供了优化其设计用于生物医学应用的见解.
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