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双锁系统用于高灵敏度和选择性在氧化酶激活和成像中

So Jin Hong¹, Eunsol Jeon², Min Jung Kim²

¹Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea.

Analytical chemistry

|January 9, 2025

概括

我们开发了一种新型的双锁光探针,用于通过同时监测NTR和hNQO1.1两个减少酶来检测癌症缺氧. 这种先进的系统提供了改进的体外和体内低氧检测和监测能力.

科学领域:

生物医学工程生物医学工程
分子成像学分子成像学
化学生物学化学生物学

背景情况:

降解酶表达是细胞病理的一个关键指标,在缺氧条件下经常发生变化.
现有的减少酶单检测系统是有限的,在同时检测双减少酶时留下了一个空白.
癌症缺氧是瘤进展和治疗耐药性的关键因素,需要先进的检测方法.

研究的目的:

合理设计和开发一种双锁光探针,用于同时检测两个特定的减少酶,NTR和hNQO1.
评估探针在检测缺氧方面的性能,特别是在癌症相关的环境中.
为了证明探头对生物系统中低氧的非侵入性实时监测的实用性.

主要方法:

双锁光探针的设计,采用纳夫他胺光体与PET和ICT双锁控制.
结合了对hNQO1敏感的三甲基锁定子组和对NTR敏感的基酸盐组.
在低氧模型中应用探针,使用HeLa细胞和斑马鱼胚胎进行验证.

主要成果:

开发的双锁探头表现出高的信号噪声比,具有独特的Off-On光反应,对NTR和hNQO1.0的同时活动.
该探测器在HeLa细胞中显示出优异的低氧检测,与单一检测系统相比.
在斑马鱼胚胎中成功实现了低氧的非侵入性实时监测.

结论:

双锁光探测器提供了一个新的和有效的平台来检测缺氧,通过专门响应NTR和hNQO1.1的并发活动.
该系统为体外和体内应用提供了显著的优势,使先进的诊断能力成为可能.
该探头可监测各种病态状态,以缺氧为特征.

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