基于CeO2的缺陷丰富的声敏化剂与Schottky异质连接,以促进声动力学/化学动力学协同治疗
Haiyang Zheng1,2, Na Yin1,2, Kehong Lv1,2
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China. yinna@ciac.ac.cn.
Journal of materials chemistry. B
|April 15, 2024
概括
一种新型的声敏化剂,Pt/CeO2-S,通过促进用于声动疗 (SDT) 的反应性氧物种 (ROS) 生成和减少用于协同治疗的谷氨来增强癌症治疗.
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:
- 声动力疗法 (SDT) 显示出癌症治疗的前景,因为其非侵入性和深层组织透性.
- 当前的声敏化剂的有限反应性氧物种 (ROS) 生产限制了SDT的有效性.
- 开发高效的声敏剂对于在瘤学中推进SDT至关重要.
研究的目的:
- 开发一种新型,高效的声敏化剂,用于增强癌症治疗.
- 研究ROS生成机制和协同治疗效应的机制.
- 探索Pt/CeO2-S在联合声动力学和化学动力学治疗中的潜力.
主要方法:
- 一种新的Pt/CeO2-S声敏剂通过硫剂和*in situ*加载进行合成.
- 氧缺陷的特征及其在抑制电子孔重组中的作用.
- 评估ROS生成,谷氨耗尽和POD模仿活性.
- 评估SDT和化学动力学疗法 (CDT) 的协同治疗效应 *in vitro*和 *in vivo*.
主要成果:
- 开发的 Pt/CeO2-S 呈现出丰富的氧缺陷,显著增强了 ROS 生产.
- 纳米颗粒促进 *in situ* 氧气生成,并形成 Schottky 异质连接,进一步抑制重组.
- Pt/CeO2-S有效消耗谷氨酸 (GSH),并表现出强大的POD模仿活性.
- 该材料通过结合SDT和CDT,实现高效的协同疗法,放大瘤氧化应激.
结论:
- Pt/CeO2-S是一种新且高效的声敏化剂,在癌症治疗中具有显著的潜力.
- 构建氧缺陷和利用协同疗法的策略为开发先进的声敏化器提供了一个有希望的方向.
- 这项工作为改进非侵入性癌症治疗方式铺平了道路.
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