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Liu Z, Huang S, Yan Y, Pang W, Zhong F, Huang Q, Caddeo F, Zhang M, Jin M, Shui L. Multiplex signal amplification for ultrasensitive CRP assay via integrated electrochemical biosensor array using MOF-derived carbon material and aptamers. Talanta 2024; 272:125735. [PMID: 38364556 DOI: 10.1016/j.talanta.2024.125735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/16/2024] [Accepted: 01/29/2024] [Indexed: 02/18/2024]
Abstract
Accurate and precise detection of disease-associated proteins, such as C-reactive protein (CRP), remains a challenge in biosensor development. Herein, we present a novel approach-an integrated disposable aptasensor array-designed for precise, ultra-sensitive, and parallel detection of CRP in plasma samples. This integrated biosensing array platform enables multiplex parallel testing, ensuring the accuracy and reliability in sample analysis. The ultra-sensitivity of this biosensor is achieved through multiplex signal amplification. Leveraging the superior conductivity and extensive surface area of MOF-derived nanoporous carbon material (CMOF), the biosensor enhances recognition elements (aptamers) by catalyzing the horseradish peroxidase (HRP) label enzyme reaction to multiply the number of probe molecules. Optimized conditions yielded exceptional performance, exhibiting high accuracy (relative standard deviation, RSD≤10.0 %), a low detection limit (0.3 pg/mL, S/N = 3), ultra-sensitivity (0.16 μA/ng mL-1 mm-2), and a rapid response (seven parallel tests within 60 min). Importantly, this multi-unit integrated disposable aptasensor array accurately quantified CRP in human serum, demonstrating comparable results to commercial enzyme-linked immunosorbent assay (ELISA). This technology showcases promise for detecting various biomarkers using a unified approach, presenting an appealing strategy for early disease diagnosis and biological analysis.
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Affiliation(s)
- Zhenping Liu
- Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, PR China; University of Hamburg, Institute for Nanostructure and Solid-State Physics, Center for Hybrid Nanostructures, Hamburg, Germany.
| | - Shuqing Huang
- Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, PR China
| | - Yu Yan
- Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, PR China
| | - Wenbin Pang
- Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, PR China
| | - Fenqing Zhong
- Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, PR China
| | - Qiuju Huang
- Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, College of Pharmacy, Guangxi Medical University, Nanning, 530021, PR China.
| | - Francesco Caddeo
- University of Hamburg, Institute for Nanostructure and Solid-State Physics, Center for Hybrid Nanostructures, Hamburg, Germany
| | - Minmin Zhang
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006, PR China
| | - Mingliang Jin
- Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, PR China; International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, 526238, PR China.
| | - Lingling Shui
- Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, PR China; Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006, PR China
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