一个灵敏的探针用于通过时间解析的光检测Zn{\displaystyle \Zn}{\displaystyle \Zn}{\text{II}})
Maksim Royzen1, Alexander Durandin, Victor G Young
1Department of Chemistry, New York University, New York, New York 10003, USA.
Journal of the American Chemical Society
|March 23, 2006
概括
一个新的光传感器有效地检测(II) 离子使用时间解析的光. 这种方法准确地测量肺细胞中的 (II) 度,克服了传感器聚合问题.
科学领域:
- 分析化学 分析化学
- 生物物理化学 生物物理化学
- 材料科学 材料科学 材料科学
背景情况:
- ) 离子在生物系统中起着至关重要的作用.
- 开发用于检测的敏感和选择性传感器对于研究和诊断至关重要.
- 现有的基于光的方法可能受到传感器聚合和环境因素的限制.
研究的目的:
- 开发一种高度灵敏的光传感器,用于 (II) 检测.
- 描述传感器的结合特性和光衰变配置文件.
- 为了评估传感器在生物样本,特别是肺细胞中的实用性.
主要方法:
- 合成三二甲胺衍生物作为光传感器.
- 使用光谱技术 (UV-Vis,NMR) 和X射线晶体学对联体金属复合物的表征.
- 时间分辨率光 (TRF) 光谱分析度依赖的Zn(II) 衰变档案.
- 使用A549上皮肺细胞进行体外研究.
主要成果:
- 传感器对Zn (II) 离子具有强烈的结合亲和力.
- 观察到度依赖的Zn (II) 位比率TRF衰变档案,从而可以进行比值估计.
- 在没有Zn (II) 的情况下,传感器聚合被TRF识别出来,这种限制在稳定状态光中并不明显.
- 在使用TRF的A549细胞中成功监测细胞内Zn(II) 度.
结论:
- 开发的光传感器和TRF方法为量化Zn (II) 离子提供了可靠的方法.
- TRF光谱有效地区分了受限和不受限的传感器状态,减轻了聚合工件.
- 该传感器适用于肺上皮细胞中体外生物检测Zn (II).
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