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Signal-On Detection of Dopamine and Tyrosinase Using Tris(hydroxypropyl)phosphine as a New Lucigenin Chemiluminescence Coreactant
Analytical Chemistry ( IF 6.7 ) Pub Date : 2024-09-05 , DOI: 10.1021/acs.analchem.4c00748
Islam M Mostafa 1, 2 , Abubakar Abdussalam 1, 3 , Hongzhan Liu 1, 4 , Zhiyong Dong 1, 4 , Shiyu Xia 1, 4 , Ala'a Mhmoued Abdllh Alboull 1, 4 , Baohua Lou 1, 4 , Guobao Xu 1, 4
Affiliation  

Dopamine (DA) is a very imperative neurotransmitter in our body, since it contributes to several physiological processes in our body, for example, memory, feeling, cognition, cardiovascular diseases, and hormone secretion. Meanwhile, tyrosinase is a critical biomarker for several dangerous skin diseases, including vitiligo and melanoma cancer. Most of the reported chemiluminescent (CL) methods for monitoring DA and tyrosinase are signal-off biosensors. Herein, we introduce a new chemiluminescent “signal-on” system, lucigenin-tris(hydroxypropyl)phosphine (THPP), for the selective determination of DA and tyrosinase. THPP is well known as a versatile and highly water–soluble sulfhydryl-reducing compound that is more highly stable against air oxidation than common disulfide reductants. By employing THPP for the first time as an efficient lucigenin coreactant, the lucigenin-THPP system has shown a high CL response (approximately 16-fold) compared to the lucigenin-H2O2 classical CL system. Surprisingly, DA can remarkably boost the CL intensity of the lucigenin-THPP CL system. Additionally, tyrosinase can efficiently catalyze the conversion of tyramine to DA. Therefore, lucigenin-THPP was employed as an ultrasensitive and selective signal-on CL system for the quantification of DA, tyrosinase, and THPP. The linear ranges for the quantification of DA, tyrosinase, and THPP were 50–1000 nM, 0.2–50 μg/mL, and 0.1–800 μM, respectively. LODs for DA and tyrosinase were estimated to be 24 nM and 0.18 μg/mL, respectively. Additionally, the CL system has been successfully employed for the detection of tyrosinase in human serum samples and the assay of DA in human serum samples as well as in dopamine injection ampules with excellent obtained recoveries.

中文翻译:


使用三(羟丙基)膦作为新型光泽精化学发光共反应剂对多巴胺和酪氨酸酶进行信号检测



多巴胺(DA)是我们体内非常重要的神经递质,因为它有助于我们体内的多种生理过程,例如记忆、感觉、认知、心血管疾病和激素分泌。与此同时,酪氨酸酶是多种危险皮肤病的关键生物标志物,包括白癜风和黑色素瘤。大多数报道的用于监测 DA 和酪氨酸酶的化学发光 (CL) 方法都是信号关闭生物传感器。在此,我们介绍了一种新的化学发光“信号开启”系统,光泽精-三(羟丙基)膦(THPP),用于选择性测定 DA 和酪氨酸酶。 THPP 是众所周知的一种多功能且高度水溶性的硫氢基还原化合物,它比常见的二硫化物还原剂对空气氧化具有更高的稳定性。通过首次采用THPP作为有效的光泽素共反应剂,光泽素-THPP系统​​与光泽素-H 2 O 2经典CL系统相比表现出高CL响应(约16倍)。令人惊讶的是,DA 可以显着提高光泽精-THPP CL 系统的 CL 强度。此外,酪氨酸酶可以有效催化酪胺转化为DA。因此,光泽精-THPP 被用作超灵敏、选择性的 CL 信号系统,用于定量 DA、酪氨酸酶和 THPP。 DA、酪氨酸酶和 THPP 定量的线性范围分别为 50–1000 nM、0.2–50 μg/mL 和 0.1–800 μM。 DA 和酪氨酸酶的 LOD 估计分别为 24 nM 和 0.18 μg/mL。此外,CL系统已成功用于人血清样品中酪氨酸酶的检测、人血清样品以及多巴胺注射安瓿中DA的测定,并获得了良好的回收率。
更新日期:2024-09-05
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