PtMo-Au金属酶调节瘤微环境,用于增强的声动力学/化学动力学/饥饿协同疗法
Jiawei Zhu1, Chenxi Wang1, Qinglin Wei1
1Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Physical and Mathematical Sciences, Nanjing Tech University (NanjingTech), Nanjing, 211816, China.
Small (Weinheim an der Bergstrasse, Germany)
|July 11, 2023
概括
这项研究介绍了一种新的PtMo-Au金属酶声敏化剂,通过改善反应性氧物种 (ROS) 生产和克服瘤微环境 (TME) 挑战来增强声动疗法 (SDT),以有效治疗癌症.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 声动力学治疗 (SDT) 的有效性受到低声敏化剂量子产量和免疫抑制瘤微环境 (TME) 的限制.
- 在TME中,低氧和谷氨 (GSH) 阻碍了对SDT至关重要的反应性氧物种 (ROS) 生成.
- 现有的声敏剂在克服TME相关的局限性以改善临床结果方面面临挑战.
研究的目的:
- 开发一种新的PtMo-Au金属酶声敏化剂,以提高SDT的疗效.
- 通过优化 ROS 量子产量和调节 TME 来解决传统声敏化器的局限性.
- 创建一个多式疗法策略,结合SDT,化学动力学疗法 (CDT) 和铁灭症诱导.
主要方法:
- 用Au纳米粒子调节PtMo能量带结构,合成PtMo-Au金属酶声敏化剂.
- 利用AU纳米粒子表面沉积来改善电荷分离,减少载体重组.
- 利用PtMo-Au的类似触酶的活性来缓解TME缺氧和GSH介导干扰.
- 采用Au的葡萄糖氧化酶模仿活性来抑制ATP和产生H2O2.
主要成果:
- 在超声波 (美国) 下,由于电荷载体动态的改进,提高了ROS量子产量.
- 缓解TME缺氧和GSH枯竭,导致增强SDT诱导的ROS生成.
- 通过结合的SDT和CDT产生的协同治疗效果,通过脂质过氧化物积累诱导铁.
- 通过葡萄糖氧化酶模仿活性抑制瘤细胞的ATP产生和诱导饥饿.
结论:
- 该PtMo-Au金属酶声敏化剂有效地克服了传统声敏化剂的局限性.
- 纳米颗粒的表面沉积增强了ROS的产生,并调节了TME.
- 这种新的方法为美国的癌症治疗提供了一个有前途的多式联络策略.
- 开发的金属酶为优化SDT和相关癌症治疗提供了新的视角.
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