结构同位素工程调节分子AIE行为和在可视化内源硫化中的应用
Yaxi Li1, Yong-Xiang Wang2, Dujuan Liu1
1Department of Radiology, Jiangnan University Medical Center (JUMC), Wuxi 214002, China.
Journal of materials chemistry. B
|October 4, 2024
概括
研究人员开发了一种基于库马林的新型光探针 (CMR-o-Py),用于敏感的实时检测硫化 (H2S). 这种探测器对生物应用有很大的希望,包括在活细胞中感知内源H2S.
科学领域:
- 化学生物学 化学生物学
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 硫化 (H2S) 是生理和病理过程中至关重要的信号分子.
- 精确检测H2S对于了解其在癌症和神经退行等疾病中的作用至关重要.
- 基于光的检测为实时,现场H2S传感提供了优势.
研究的目的:
- 开发一种基于库马林的光探针,用于敏感的H2S检测.
- 为了研究合成的光体的聚合诱导排放 (AIE) 特性.
- 评估探测器在生物环境中检测H2S的性能.
主要方法:
- 基于库马林的光体的合成与aminopyridine通过一种imino双键连接在一起.
- 结构异构工程优化AIE行为.
- 探测器性能的表征,包括检测极限,结合亲和力和反应动力学.
- 探针在活细胞和洋组织中检测内源H2S的应用.
主要成果:
- 开发了CMR-o-Py,一种表现出增强AIE特性的氨酸衍生物.
- 在水友环境中,H2S的低检测极限达到18.1μM.
- 证明了高的结合能量常数 (5.68 × 10^8 M^-1) 和快速的结合动力学.
- 确认了优良的生物相容性,并在生物样本中成功检测了内源H2S.
结论:
- CMR-o-Py纳米聚合物作为有效的光探针用于H2S检测.
- 探测器的设计允许对H2S进行敏感和选择性的探测.
- 在生物系统和疾病研究中,CMR-o-Py显示了实时监测H2S的巨大潜力.
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