一个化学发光传感器用于成像内源性聚硫化物在生物系统中的成像
Hanqing Zhao1, Fenghui Qi1, Yanian Xiong1
1School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China. jzlu@shmu.edu.cn.
The Analyst
|June 26, 2023
概括
研究人员开发了新的化学发光探针,用于检测硫化 (H2S) 和相关的硫物种. 该CL-HP2探头显示出优越的灵敏度,并且有效用于细胞和动物模型的体内成像.
科学领域:
- 化学生物学 化学生物学
- 分析化学 分析化学
- 生物医学成像技术 生物医学成像技术
背景情况:
- 硫化 (H2S) 是一个关键的信号分子,参与各种生理和病理过程.
- 区分H2S与其他反应硫物种 (RSS) 是具有挑战性的,但对于理解其生物作用至关重要.
- 对于H2S检测和成像,需要开发敏感和选择性探测器.
研究的目的:
- 设计和合成用于选择性H2S检测的新型化学发光探针.
- 评估合成探针的性能,特别是它们的灵敏度和选择性.
- 展示优化探头在生物系统和疾病模型中可视化内源H2S的应用.
主要方法:
- 合成基于阿达曼蒂利丁二氧化的化学发光探针,其中包括2-基酸和2--4-基酸部分.
- 探测器性能的表征,包括发光强度,选择性和线性响应范围.
- 使用标准解决方案评估探头灵敏度并确定检测极限 (LOD).
- 该探头用于内源H2S的活细胞成像和在小鼠模型中的体内成像.
主要成果:
- 两个新的化学发光探头,CL-HP1和CL-HP2,已经成功合成.
- 与CL-HP1相比,CL-HP2的发光强度显著提高 (150倍),表明性能提高.
- 在低度 (0-100μM) 中,CL-HP2表现出广泛的线性检测范围 (0.025-10μM) 和高灵敏度,LOD为0.23μM.
- 该探测器有效地可视化了活细胞中的内源H2S,并应用于细菌感染和铁亡的体内成像.
结论:
- 开发的CL-HP2探头是H2S检测的高度敏感和有效的化学发光工具.
- CL-HP2可视化活细胞内源的H2S,并促进疾病模型中的体内成像.
- 这种探测器具有很大的潜力,可以促进与H2S相关的生物过程和疾病诊断的研究.
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