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Wang X, Wang H, Sun Y, Liu Z, Wang N. Liquid crystal biosensor based on AuNPs signal amplification for detection of human chorionic gonadotropin. Talanta 2024; 266:125025. [PMID: 37586282 DOI: 10.1016/j.talanta.2023.125025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023]
Abstract
The detection of human chorionic gonadotropin (HCG) allows for the determination of pregnancy and is thus crucial during early pregnancy testing. This study introduces a novel liquid crystal (LC) biosensor that employs Au nanoparticles (AuNPs) for signal amplification, thus enabling the detection of the HCG antigen in a micro, efficient, and cost-effective manner. The sensor design capitalizes on the unique properties of LC to facilitate the detection of HCG. In this research, the surface of the base substrate was first modified with material from DMOAP and APTES, and EDC/sulfo-NHS was used to couple AuNPs and β-hCG to form an AuNP-β-hCG conjugate that improves the coupling rate. The carboxyl group of the antibody was reacted with the aldehyde group of glutaraldehyde, which helps to fix the β-hCG antibody to the surface of the substrate. The HCG sample is immobilized on the surface of the substrate via antigen-antibody immunobinding. As signal amplifiers, the AuNPs can have a significant effect on the topology of the interface and the vertical order of the LC molecules, thus reducing the limit of detection. Finally, the limit of detection was calculated using the SPSS system, and the relationship between grey values and concentrations was also obtained. The detection limit for HCG can be as low as 1.916 × 10-3 mIU·mL-1 under ideal conditions. Compared to other detection methods for HCG, this structure provides a detection pathway with excellent sensitivity, low detection limits, and better specificity, thus offering a new idea for HCG or any other target requiring trace detection.
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Affiliation(s)
- Xue Wang
- Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710075, China; Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710021, China; The Key Laboratory of Degeneration and Unutilized Land Improvement of the Ministry of Land and Resources, Xi'an, Shaanxi, 710075, China; Shaanxi Engineering Research Center of Land Consolidation, Xi'an, Shaanxi, 710075, China; Land Engineering Technology Innovation Center, Ministry of Natural Resources, Xi'an, Shaanxi, 710075, China.
| | - Huanyuan Wang
- Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710075, China; Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710021, China; The Key Laboratory of Degeneration and Unutilized Land Improvement of the Ministry of Land and Resources, Xi'an, Shaanxi, 710075, China; Shaanxi Engineering Research Center of Land Consolidation, Xi'an, Shaanxi, 710075, China; Land Engineering Technology Innovation Center, Ministry of Natural Resources, Xi'an, Shaanxi, 710075, China.
| | - Yingying Sun
- Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710075, China; Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710021, China; The Key Laboratory of Degeneration and Unutilized Land Improvement of the Ministry of Land and Resources, Xi'an, Shaanxi, 710075, China; Shaanxi Engineering Research Center of Land Consolidation, Xi'an, Shaanxi, 710075, China; Land Engineering Technology Innovation Center, Ministry of Natural Resources, Xi'an, Shaanxi, 710075, China
| | - Zhe Liu
- Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710075, China; Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710021, China; The Key Laboratory of Degeneration and Unutilized Land Improvement of the Ministry of Land and Resources, Xi'an, Shaanxi, 710075, China; Shaanxi Engineering Research Center of Land Consolidation, Xi'an, Shaanxi, 710075, China; Land Engineering Technology Innovation Center, Ministry of Natural Resources, Xi'an, Shaanxi, 710075, China
| | - Na Wang
- Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710075, China; Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi, 710021, China; The Key Laboratory of Degeneration and Unutilized Land Improvement of the Ministry of Land and Resources, Xi'an, Shaanxi, 710075, China; Shaanxi Engineering Research Center of Land Consolidation, Xi'an, Shaanxi, 710075, China; Land Engineering Technology Innovation Center, Ministry of Natural Resources, Xi'an, Shaanxi, 710075, China
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Shan Y, Lu W, Xi J, Qian Y. Biomedical applications of iron sulfide-based nanozymes. Front Chem 2022; 10:1000709. [PMID: 36105309 PMCID: PMC9465017 DOI: 10.3389/fchem.2022.1000709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/04/2022] [Indexed: 11/30/2022] Open
Abstract
Nanozymes have attracted great interest owing to their marvelous advantages, such as high stability, facile preparation, and high tunability. In particular, iron sulfide-based nanozymes (termed as ISNs), as one of the most researched nanomaterials with versatile enzyme-mimicking properties, have proved their potential in biomedical applications. In this review, we briefly summarize the classification, catalytic mechanisms of ISNs and then principally introduce ISNs’ biomedical applications in biosensors, tumor therapy, antibacterial therapy, and others, demonstrating that ISNs have promising potential for alleviating human health.
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Affiliation(s)
- Yunyi Shan
- Department of Pharmacology, School of Medicine, Institute of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Wenjie Lu
- Department of Pharmacology, School of Medicine, Institute of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Juqun Xi
- Department of Pharmacology, School of Medicine, Institute of Translational Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, China
| | - Yayun Qian
- Department of Pharmacology, School of Medicine, Institute of Translational Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, China
- *Correspondence: Yayun Qian,
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Campuzano S, Pedrero M, Yáñez-Sedeño P, Pingarrón JM. Nanozymes in electrochemical affinity biosensing. Mikrochim Acta 2020; 187:423. [PMID: 32621150 DOI: 10.1007/s00604-020-04390-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/13/2020] [Indexed: 01/13/2023]
Abstract
Over the past decade, artificial nanomaterials that exhibit properties similar to those of enzymes are gaining attraction in electrochemical biosensing as highly stable and low-cost alternatives to enzymes. This review article discusses the main features of the various nanomaterials (metal oxide, metal, and carbon-based materials) explored so far to mimic different kinds of enzymes. The unprecedented opportunities imparted by these functional nanomaterials or their nanohybrids, mostly providing peroxidase-like activity, in electrochemical affinity biosensing are critically discussed mainly in connection with their use as catalytic labels or electrode surface modifiers by highlighting representative strategies reported in the past 5 years with application in the food, environmental, and biomedical fields. Apart from outlining the pros and cons of nanomaterial-based enzyme mimetics arising from the impressive development they have experienced over the last few years, current challenges and future directions for achieving their widespread use and exploiting their full potential in the development of electrochemical biosensors are discussed. Graphical abstract.
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Affiliation(s)
- Susana Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040, Madrid, Spain.
| | - María Pedrero
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040, Madrid, Spain
| | - Paloma Yáñez-Sedeño
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040, Madrid, Spain
| | - José M Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040, Madrid, Spain
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Mahmudunnabi RG, Farhana FZ, Kashaninejad N, Firoz SH, Shim YB, Shiddiky MJA. Nanozyme-based electrochemical biosensors for disease biomarker detection. Analyst 2020; 145:4398-4420. [PMID: 32436931 DOI: 10.1039/d0an00558d] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In recent years, a new group of nanomaterials named nanozymes that exhibit enzyme-mimicking catalytic activity has emerged as a promising alternative to natural enzymes. Nanozymes can address some of the intrinsic limitations of natural enzymes such as high cost, low stability, difficulty in storage, and specific working conditions (i.e., narrow substrate, temperature and pH ranges). Thus, synthesis and applications of hybrid and stimuli-responsive advanced nanozymes could revolutionize the current practice in life sciences and biosensor applications. On the other hand, electrochemical biosensors have long been used as an efficient way for quantitative detection of analytes (biomarkers) of interest. As such, the use of nanozymes in electrochemical biosensors is particularly important to achieve low cost and stable biosensors for prognostics, diagnostics, and therapeutic monitoring of diseases. Herein, we summarize the recent advances in the synthesis and classification of common nanozymes and their application in electrochemical biosensor development. After briefly overviewing the applications of nanozymes in non-electrochemical-based biomolecular sensing systems, we thoroughly discuss the state-of-the-art advances in nanozyme-based electrochemical biosensors, including genosensors, immunosensors, cytosensors and aptasensors. The applications of nanozymes in microfluidic-based assays are also discussed separately. We also highlight the challenges of nanozyme-based electrochemical biosensors and provide some possible strategies to address these limitations. Finally, future perspectives on the development of nanozyme-based electrochemical biosensors for disease biomarker detection are presented. We envisage that standardization of nanozymes and their fabrication process may bring a paradigm shift in biomolecular sensing by fabricating highly specific, multi-enzyme mimicking nanozymes for highly sensitive, selective, and low-biofouling electrochemical biosensors.
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Affiliation(s)
- Rabbee G Mahmudunnabi
- Institute of BioPhysio-Sensor Technology, Pusan National University, Busan 46241, South Korea
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Tan Z, Dong H, Liu Q, Liu H, Zhao P, Wang P, Li Y, Zhang D, Zhao Z, Dong Y. A label-free immunosensor based on PtPd NCs@MoS 2 nanoenzymes for hepatitis B surface antigen detection. Biosens Bioelectron 2019; 142:111556. [PMID: 31377574 DOI: 10.1016/j.bios.2019.111556] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/26/2019] [Accepted: 07/29/2019] [Indexed: 12/11/2022]
Abstract
Nowadays, nanomaterials with enzymatic properties have aroused wide interest because of their special advantages, such as catalytic activity, simple preparation method and high stability. We introduced new nanoenzymes to a label-free electrochemical immunosensor for Hepatitis B surface antigen (HBs Ag) detection. In this study, PtPd nanocubes@MoS2 nanoenzymes (PtPd NCs@MoS2) were prepared by loading PtPd nanocubes (PtPd NCs) on molybdenum disulfide nano-sheet (MoS2) through in situ redox polymerization. The prepared nanoenzymes exhibited enhanced peroxidase-like activity than separate MoS2 and PtPd NCs. The catalytic process of PtPd NCs@MoS2 is in agreement with the Michaelis-Menten kinetic equation. PtPd NCs@MoS2 were used for sensitive detection of HBs Ag, which is ascribed to their superior peroxidase activity, good conductivity and high specific surface area and synergistic amplification for current signals. Compared with the detection limit of colorimetric method (3.3 pg/mL), the electrochemical method (10.2 fg/mL) shows a lower detection limit and a wider linear range from 32 fg/mL to 100 ng/mL, so it is more suitable for quantitative analysis of Hepatitis B. In summary, the prepared immunosensor provides a better opportunity for early diagnosis of Hepatitis B and also has further applications in biosensing and medical diagnostics.
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Affiliation(s)
- Zhaoling Tan
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
| | - Hui Dong
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
| | - Qing Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China.
| | - Hui Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
| | - Pingping Zhao
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, PR China
| | - Ping Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
| | - Yueyun Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
| | - Daopeng Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
| | - Zengdian Zhao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
| | - Yunhui Dong
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China
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