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Pd(0) 中介脱化学:对其在传感CO的应用进行重新评估

Dongning Liu¹, Xiaoxiao Yang¹, Shivanagababu Challa¹

¹Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States.

The Journal of organic chemistry

|November 4, 2025

概括

这项研究表明,一氧化碳 (CO) 的光探针受到CO独立因素和生物分子的影响. 由于维生素C和硫醇的干扰,在体内不太可能准确检测CO.

科学领域:

化学生物学化学生物学
分析化学分析化学
生物化学生化学

背景情况:

(Pd) 催化反应被用来开发用于检测一氧化碳 (CO) 的光探针.
现有的探测器通常依赖于将CO降低Pd(II) 到Pd(0),使用基于的CO释放分子 (CORM),如CORM-2和CORM-3.
这些CORM已知有反应性问题和不一致的CO释放,可能会影响探测器的准确性.

研究的目的:

为了评估广泛使用的光探针FL-CO-1.的性能.
评估它对各种CO源和Pd0的反应.
调查生物系统中的潜在干扰.

主要方法:

使用不同的CO源测试FL-CO-1探头,包括CORM-2,CORM-3和Pd(0).
在各种条件下分析探针的光反应.
评估生物分子,如维生素C和氨酸的影响.

主要成果:

通过CORM-2/-3激活FL-CO-1,显示了CO-独立的组件.
维生素C和氨酸干扰了探测器的性能.
单独Pd(0) 引起了适度的光增加,而Pd(0) 加上CO产生了显著的反应.

结论:

在这些探测器中,CO的作用超出了简单的Pd (II) 减少.
使用这种探针进行体内CO检测是不可靠的,因为内源维生素C和硫醇的干扰.
使用反应性CORM获得的结果可能需要重新解释;未来的研究应该使用较少反应性的CO来源,以确保实验的严谨性.

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