通过重组协调来调节位电子结构,以实现有效的非依赖氧的声触媒疗法,用于对抗正位素乳腺癌
Guotao Yuan1,2, Bowen Yang1, Pin Chen3
1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China.
ACS nano
|September 27, 2024
概括
这项研究引入了一种新的单原子催化剂 (MnN5 SA/CNF) 用于声催化疗法 (SCT). 这种先进的催化剂有效地产生反应性氧物种 (ROS),以加强瘤治疗,即使在低氧环境中也是如此.
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:
- 声催化疗法 (SCT) 显示出对非侵入性瘤治疗的前景.
- 目前的SCT方法受到不足的活性氧物种 (ROS) 生成和缺氧瘤微环境的限制.
研究的目的:
- 开发一种新的单原子催化剂,以增强声催化活性.
- 在SCT中克服ROS生成和瘤缺氧的局限性.
- 为了研究开发的催化剂的抗瘤功效.
主要方法:
- 制造一个碳纳米框架限制的N-协调单原子催化剂 (MnN5 SA/CNF) 通过酸介导的热解.
- 使用同步龙X射线吸收细结构 (XAFS) 分析,对催化剂的协调结构进行表征.
- 对声触媒活性,氧依赖性和密度函数理论 (DFT) 研究的评估.
- 在一个正位素乳腺癌小鼠模型中评估抗瘤效应.
主要成果:
- MnN5 SA/CNF催化剂表现出优异的,不依赖氧气的声催化活性.
- DFT研究证实了五个协调结构优化了Mn d频段中心,并增强了含氧中间溶解.
- 催化剂通过线粒体亡 in vivo显著抑制瘤生长.
结论:
- 开发的MnN5 SA/CNF催化剂有效地解决了SCT中的ROS生成和缺氧挑战.
- 这项工作突出了单原子 (SA) 酶模拟 (SAzyme) 催化剂在生物医学应用中的潜力.
- 这些发现为先进的SAzyme支持的治疗策略铺平了道路.
相关概念视频
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Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
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