合Pt单原子与无形LDH纳米薄片作为用于声动力免疫治疗的高效声敏化剂
Tao Wang1, Tingting Hu2, Shibo Wang1
1State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|February 10, 2026
概括
这项研究介绍了一种新的单原子催化剂在无形层双氧化物 (Pt/a-LDH) 上,用于增强的声动疗法 (SDT). Pt/a-LDH显著增强了反应性氧物种的产生和免疫疗法,提供了一个有前途的癌症治疗替代方案.
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:
- 声动力学疗法 (SDT) 对癌症治疗有希望,但由于低效的反应性氧物种 (ROS) 生产而受到限制.
- 无机声敏剂存在宽带间隙,快速充电重组和低氧激活,阻碍了它们的临床疗效.
研究的目的:
- 开发一种用于增强声动力免疫治疗的新型声敏剂.
- 研究缺陷工程和单原子修改对声敏器性能的影响.
主要方法:
- 在无形的CoMgMo层的双氧化物 (Pt/a-LDH) 上固定单原子.
- 描述Pt/a-LDH的带隙减小,缺陷密度和氧吸附/激活特性.
- 在试验室中评估声动力学性能和单点氧气生成.
- 评估体内治疗疗效,包括免疫细胞死亡,免疫细胞激活和瘤微环境调节.
主要成果:
- Pt/a-LDH表现出减少的带隙 (0.6 eV) 和抑制的电子孔重组 (89.8%的抑制).
- 观察到增强的氧气吸附/激活和加速的反应动力学.
- Pt/a-LDH产生了比CoMgMo-LDH更多的5.3倍的单一氧气,比TiO2产生了38.2倍的氧气.
- 在体内研究表明,Pt/a-LDH诱导了免疫细胞死亡,并重新编程了瘤微环境.
结论:
- Pt/a-LDH代表了用于声动力免疫治疗的高效的声敏化剂.
- 缺陷工程和单原子催化剂的结合为先进的癌症治疗提供了一个新的策略.
- 这种方法有可能克服当前声动力学剂的局限性.
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