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Wang A, Li Y, You X, Zhang S, Zhou J, Liu H, Ding P, Chen Y, Qi Y, Liu Y, Liang C, Zhu X, Zhang Y, Liu E, Zhang G. Electrochemical immunosensor nanoarchitectonics with the Ag-rGO nanocomposites for the detection of receptor-binding domain of SARS-CoV-2 spike protein. J Solid State Electrochem 2023; 27:489-499. [PMID: 36466035 PMCID: PMC9707143 DOI: 10.1007/s10008-022-05330-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/27/2022] [Accepted: 11/01/2022] [Indexed: 11/30/2022]
Abstract
As the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses a grave threat to human life and health, it is essential to develop an efficient and sensitive detection method to identify infected individuals. This study described an electrode platform immunosensor to detect SARS-CoV-2-specific spike receptor-binding domain (RBD) protein based on a bare gold electrode modified with Ag-rGO nanocomposites and the biotin-streptavidin interaction system. The Ag-rGO nanocomposites was obtained by chemical synthesis and characterized by electrochemistry and scanning electron microscope (SEM). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to record the electrochemical signals in the electrode modification. The differential pulse voltammetry (DPV) results showed that the limit of detection (LOD) of the immunosensor was 7.2 fg mL-1 and the linear dynamic detection range was 0.015 ~ 158.5 pg mL-1. Furthermore, this sensitive immunosensor accurately detected RBD in artificial saliva with favorable stability, specificity, and reproducibility, indicating that it has the potential to be used as a practical method for the detection of SARS-CoV-2.
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Affiliation(s)
- Aiping Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Yuya Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Xiaojuan You
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Shoutao Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Jingming Zhou
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Hongliang Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Peiyang Ding
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Yumei Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Yanhua Qi
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Yankai Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Chao Liang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Xifang Zhu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Ying Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Enping Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Gaiping Zhang
- School of Advanced Agricultural Sciences, Peking University, Beijing, 100871 China
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002 Henan China
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Wang M, Jiang M, Liao X, Wang X, Lai W, Li P, Li J, Hong C, Qi Y. Preparation of an electrochemical immunosensor based on a Cu/Cu 2O-rGO@Au signal synergistic amplification strategy and efficient and sensitive detection of alpha-fetoprotein. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2703-2713. [PMID: 35770823 DOI: 10.1039/d2ay00734g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The effective amplification of the signal is the prerequisite for the ultrasensitive detection of electrochemical immunosensors. To quantitatively detect alpha-fetoprotein (AFP), we prepared a sandwich-type electrochemical immunosensor. Using a gold nanoparticles (Au NPs) modified glassy carbon electrode (GCE) as the sensing platform and Cu/Cu2O-rGO@Au as the signal label, differential pulse voltammetry (DPV) was used to achieve sensitive detection of AFP. We found that the nanomaterials can undergo electro-oxidation and electro-reduction reactions between Cu(I) and Cu(II) in a buffer solution of pH = 6.0. It is worth mentioning that the incorporation of metals into metal oxide substrates is a new strategy to combine the catalytic activity of metal oxides with the electrical conductivity of metals. Reduced graphene oxide (rGO), which is rich in oxygen-containing groups, can load more Cu/Cu2O and Au NPs and increase the conductivity. The modification of Au NPs makes them have better biocompatibility and conductivity. Under the best detection conditions, the prepared immunosensor realizes the specific and ultrasensitive detection of AFP. The detection range is 0.01-50 ng mL-1 and the limit of detection (LOD) was as low as 0.589 pg mL-1 (S/N = 3); meanwhile it also has good practical application ability. Therefore, this immunosensor provides an important means for the early screening and detection of AFP.
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Affiliation(s)
- Min Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Mingzhe Jiang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Xiaochen Liao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Xiao Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Wenjing Lai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Pengli Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Jiajia Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Chenglin Hong
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
| | - Yu Qi
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China.
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Tan Z, Cao L, Yang Y, Yan Q, Liu Q, Zhang W, Zhao P, Li Y, Zhang D. Amperometric immunoassay for the carcinoembryonic antigen by using a peroxidase mimic consisting of palladium nanospheres functionalized with glutathione-capped gold nanoparticles on graphene oxide. Mikrochim Acta 2019; 186:693. [DOI: 10.1007/s00604-019-3799-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 09/07/2019] [Indexed: 12/17/2022]
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Lu W, Guo X, Yang B, Wang S, Liu Y, Yao H, Liu C, Pang H. Synthesis and Applications of Graphene/Iron(III) Oxide Composites. ChemElectroChem 2019. [DOI: 10.1002/celc.201901006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Wenjie Lu
- Guangling College, School of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225009, Jiangsu P. R. China
| | - Xiaotian Guo
- Guangling College, School of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225009, Jiangsu P. R. China
| | - Biao Yang
- Guangling College, School of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225009, Jiangsu P. R. China
| | - Sibo Wang
- Guangling College, School of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225009, Jiangsu P. R. China
| | - Yong Liu
- Collaborative Innovation Center of Nonferrous Metals of Henan Province Henan Key Laboratory of High-Temperature Structural and Functional Materials School of Materials Science and EngineeringHenan University of Science and Technology Luoyang China
| | - Hang Yao
- Guangling College, School of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225009, Jiangsu P. R. China
| | - Chun‐Sen Liu
- Henan Provincial Key Laboratory of Surface & Interface ScienceZhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Huan Pang
- Guangling College, School of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225009, Jiangsu P. R. China
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