基于罗多尔高度选择性地识别H2S的光探针的合成及其在细胞中的应用
Jiefeng Tang1, Xiangjun Chen1, Zhenzhen Wang1
1College of Chemical Engineering, Sichuan University of Science & Engineering, Zigong 643000, China. wangjuan2022@suse.edu.cn.
Analytical methods : advancing methods and applications
|November 22, 2024
概括
研究人员开发了一种新的光探针,用于检测硫化 (H2S). 这种高度敏感和光稳定的探头能够在生物样本和活细胞中快速,选择性地检测H2S.
科学领域:
- 化学生物学 化学生物学
- 分析化学 分析化学
- 生物化学 生物化学
背景情况:
- 硫化 (H2S) 是生物系统中至关重要的信号分子.
- 精确检测H2S对于理解其生理作用至关重要.
- 现有的检测方法往往缺乏灵敏度,选择性或实时监控能力.
研究的目的:
- 开发一种新的,高度灵敏的,选择性的光探针来检测H2S.
- 描述探测器的光学特性和反应机制.
- 评估探测器在生物成像中对活细胞中的H2S的适用性.
主要方法:
- 一个新的光探针的合成通过二-1,4-纳夫托金与Rhodol的硫化反应.
- 用光谱分析 (光和UV-Vis) 来确定探头的性能.
- 使用1H-NMR,HR-MS和DFT计算来阐明机制.
- 细胞毒性测定和生物相容性评估.
- 活细胞中H2S的光生物成像.
主要成果:
- 开发的探头在与H2S反应时表现出"启动"光反应,伴随着可见的颜色变化.
- 探测器显示出对H2S的高选择性,快速检测 (<1分钟),以及出色的光稳定性.
- 实现了非常低的检测极限 (LOD = 44.3 nM),适合生理学相关性.
- 机制研究证实了探测器与H2S的反应途径.
- 探测器显示细胞毒性低,生物相容性高,可在活细胞中进行有效的光生物成像.
结论:
- 一个新的,高效的光探针用于H2S检测已经成功开发.
- 探测器在灵敏度,选择性,速度和光稳定性方面提供了显著的优势.
- 该探测器是生物和细胞环境中H2S检测和成像的宝贵工具.
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