在类风湿性关节炎中剖析线粒体二氧化硫生成机制,使用NIR光源性基探头 (NIR Luminogenic Iridium)
Yameng Wang1, Guantong Shen2, Daniel Shiu-Hin Chan3
1School of Life Science and Technology, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi 710072, China.
Analytical chemistry
|February 11, 2026
概括
研究人员开发了一种新的近红外探测器,用于检测线粒体中的二氧化硫 (SO2),这对于了解类风湿性关节炎 (RA) 和帮助诊断至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 分析化学 分析化学
- 线粒体生物学 线粒体生物学
背景情况:
- 二氧化硫 (SO2) 是一个重要的线粒体抗氧化剂,调节氧化还原稳定.
- 不调节的线粒体SO2涉及类风湿性关节炎 (RA) 病变发生.
- 现有的SO2探针缺乏稳定性,灵敏性和线粒体向性,用于RA研究.
研究的目的:
- 开发近红外 (NIR) 发光探针,用于敏感和实时检测线粒体SO2.
- 使用开发的探针,研究SO2在RA病变的作用.
- 在RA模型中探索SO2生成机制.
主要方法:
- 使用迈克尔加法机制合成一种基于 (III) 复合物的NIR探针.
- 在水溶液中检测SO2,并在细胞RA模型中对内源性线粒体SO2进行成像.
- 视觉化阿斯巴酸氨基转移酶1 (AAT1) 介导的SO2生成和评估探针透在3D瘤球体中的情况.
主要成果:
- 探测器展示了灵敏的SO2检测,其检测极限低 (2.12μM).
- 在细胞RA模型中成功成像了线粒体SO2水平.
- 可视化了AAT1介导的SO2生成,并显示出优异的透率 (约. 103微米) 在3D瘤球形中.
结论:
- 开发的NIR探测器是RA中成像亚细胞SO2的强大工具.
- 这种探测器增强了对RA病理机制的理解.
- 它促进了对RA的先进诊断工具的开发.
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