Zhang Qiongyu, Liu Gang, Ou Lingbin
School of Fundamental Sciences, Yongzhou Vocational Technical College, Yongzhou 425100, Hunan, People's Republic of China.
College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, Henan, People's Republic of China.
Int J Electrochem Sci. 2022 Apr;17(4):220421. doi: 10.20964/2022.04.19. Epub 2023 Jun 17.
This work reported an electrochemical method for the detection of SARS-CoV-2 major protease (Mpro). Specifically, ferrocene (Fc)-labeled peptide substrates were immobilized on the gold nanoparticles (AuNPs)-modified electrode. Cleavage of the peptides by Mpro led to the release of Fc tags and the decrease of the electrochemical signals. The analytical performance of the biosensor for analysis of Mpro was investigated. Inhibiting the activity of Mpro prevented the cleavage of the peptide substrates. The method was successfully used to evaluate the inhibition efficiency of a well-known inhibitor.
这项工作报道了一种检测新型冠状病毒主要蛋白酶(Mpro)的电化学方法。具体而言,将二茂铁(Fc)标记的肽底物固定在金纳米颗粒(AuNPs)修饰的电极上。Mpro对肽的切割导致Fc标签的释放和电化学信号的降低。研究了该生物传感器分析Mpro的分析性能。抑制Mpro的活性可防止肽底物的切割。该方法成功用于评估一种知名抑制剂的抑制效率。