应用化学 ›› 2025, Vol. 42 ›› Issue (10): 1375-1385.DOI: 10.19894/j.issn.1000-0518.250083

• 研究论文 • 上一篇    下一篇

基于仿生金属有机框架纳米酶介导的超灵敏心肌标志物光电化学传感器的构建及应用

雷玲钰1(), 苏靖昕2, 周亚1, 王耀1   

  1. 1.晋中职业技术学院,晋中 030600
    2.朝阳师范学院生化工程系,朝阳 122000
  • 收稿日期:2025-02-28 接受日期:2025-08-14 出版日期:2025-10-01 发布日期:2025-10-29
  • 通讯作者: 雷玲钰

Construction and Application Research of a Biomimetic MOF Nanozyme-Mediated Ultrasensitive Photoelectrochemical Sensor for Cardiac Biomarkers

Ling-Yu LEI1(), Jing-Xin SU2, Ya ZHOU1, Yao WANG1   

  1. 1.Jinzhong Vocational and Technical College,Taiyuan 030600,China
    2.Department of Biochemical Engineering,Chaoyang Normal University,Chaoyang 122000,China
  • Received:2025-02-28 Accepted:2025-08-14 Published:2025-10-01 Online:2025-10-29
  • Contact: Ling-Yu LEI
  • About author:Llingyu868@163.com

摘要:

心肌肌钙蛋白I(cTnI)是一种敏感性和特异性较强的心肌损伤标志物,在急性心肌梗死(AMI)等心血管疾病的早期诊断中具有较高的临床价值。 然而,在AMI发病初期,血清中的cTnI浓度较低,且受其他因素(如生理变化、其他疾病等)干扰。 为提高早期诊断的准确性和可靠性,开发灵敏度更高、抗干扰性更强的生物传感器迫在眉睫。 基于此,本文构建一种新型、简便的光电化学(PEC)生物传感器,基于仿生金属有机框架(MOF)纳米酶催化沉淀策略,实现人体血清中cTnI的高灵敏检测。 实验结果表明,cTnI的检测范围为0.1 pg/mL~100 ng/mL,检出限为11.9 fg/mL。 基于仿生MOF纳米酶介导的心肌标志物光电化学传感器具有灵敏度高、低检测限、宽线性响应范围和较好的选择性及高稳定性,可用于急性心肌梗死标志物cTnI的早期检测,有望实现对急性心肌梗死的早期诊断和治疗检测。

关键词: 金属有机框架纳米酶, 光电化学免疫分析, 生物催化沉淀, 心肌肌钙蛋白

Abstract:

Cardiac troponin I (cTnI) is a highly sensitive and specific biomarker of myocardial injury, with high clinical value in the early diagnosis of cardiovascular diseases such as acute myocardial infarction (AMI). However, in the early stages of AMI, the concentration of cTnI in the serum is low and is influenced by other factors such as physiological changes and other diseases. It is urgent to develop biosensors with higher sensitivity and stronger anti-interference ability to improve the accuracy and reliability of early diagnosis. Based on this, this article constructs a novel and simple photoelectrochemical (PEC) biosensor, which utilizes a biomimetic metal organic framework (MOF) nanoenzyme catalyzed precipitation strategy to achieve highly sensitive detection of cTnI in human serum. The experimental results indicate that the detection range of cTnI is 0.1 pg/mL to 100 ng/mL, with a detection limit of 11.9 fg/mL. The myocardial biomarker photoelectrochemical sensor based on biomimetic MOF nanoenzyme has high sensitivity, low detection limit, wide linear response range, good selectivity and high stability. It can be used for early detection of cTnI, a marker of acute myocardial infarction, and is expected to achieve early diagnosis and treatment detection of acute myocardial infarction.

Key words: Metal organic frameworks nanozyme, Photoelectrochemical immunoassay, Biocatalytic precipitation, Cardiac troponin I

中图分类号: