期刊
BIOSENSORS & BIOELECTRONICS
卷 201, 期 -, 页码 -出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2022.113962
关键词
Potential resolution; Electrochemiluminescence; Molecularly imprinting; Dual detection; Acute myocardial infarction
类别
资金
- National Natural Science Foundation of China [21373138]
- 111 Innovation and Talent Recruitment Base on Photochemical and Energy Materials [D18020]
- Shanghai Frontiers Science Center of Bio-mimetic Catalysis, Shanghai Engineering Research Center of Green Energy Chemical Engineering [18DZ2254200]
A novel potential-resolved molecularly imprinted electrochemical luminescence immunosensor has been developed for the sensitive detection of markers of acute myocardial infarction. The sensor utilizes a cost-effective and robust molecularly imprinted polymer to specifically capture the biomarkers and generate distinct electrochemical luminescence signals. The sensor exhibits a wide linear range, low detection limit, and excellent performance.
A novel potential-resolved molecularly imprinted electrochemical luminescence (ECL) immunosensor has been developed for the first time for the dual sensitive detection of markers of acute myocardial infarction (AMI): cardiac troponin I (cTnI) and myoglobin (Mb). In this work, cost-effective and robust molecularly imprinted polymer (MIP) as biomimetic antibody was used to construct the immunosensors through electropolymerization and elution to form polydopamine (PDA)-MIP modified electrode. In the presence of AMI biomarkers, two ECL probes including Ru(bpy)(3)(2+)@ MOCs and MoS2 QDs functionalized by cTnI antibody and Mb aptamer could be specifically captured respectively. And two potential distinct ECL signals will be generated in one potential scan. The intensity of ECL reflects the concentrations of cTnI and Mb. The two ECL probes were characterized with field emission scanning electron microscopy, X-ray diffraction, FT-IR spectrum and UV-Vis diffuse reflectance spectroscopy. The prepared sensor exhibited a wide linear range (0.05-104 ng/mL) and a low detection limit (0.0184 ng/mL for cTnI and 0.0492 ng/mL for Mb). Additionally, the MIP-ECL sensor displayed excellent anti interference, sensitivity and stability to detect cTnI and Mb. Therefore, it will be conducive to accelerate more precise and credible early diagnosis for AMI.
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