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Li L, Wang T, Zhong Y, Li R, Deng W, Xiao X, Xu Y, Zhang J, Hu X, Wang Y. A review of nanomaterials for biosensing applications. J Mater Chem B 2024; 12:1168-1193. [PMID: 38193143 DOI: 10.1039/d3tb02648e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
A biosensor is a device that reacts with the analyte to be analyzed, detects its concentration, and generates readable information, which plays an important role in medical diagnosis, detection of physiological indicators, and disease prevention. Nanomaterials have received increasing attention in the fabrication and improvement of biosensors due to their unique physicochemical and optical properties. In this paper, the properties of nanomaterials such as the size effect, optical and electrical properties, and their advantages in the field of biosensing are briefly summarized, and the application of nanomaterials can effectively improve the sensitivity and reduce the detection limit of biosensors. The advantages of commonly used nanomaterials such as gold nanoparticles (AuNPs), carbon nanotubes (CNTs), quantum dots (QDs), graphene, and magnetic nanobeads for biosensor applications are also reviewed. Besides, the two main types of biosensors using nanomaterials involved in their construction and their working principles are described, and the toxicity and biocompatibility of nanomaterials and the future direction of nanomaterial biosensors are discussed.
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Affiliation(s)
- Lei Li
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
| | - Tianshu Wang
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
| | - Yuting Zhong
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
| | - Ruyi Li
- Rotex Co., Ltd, Chengdu, Sichuan, 610043, China
| | - Wei Deng
- Department of Orthopedics, Pidu District People's Hospital, the Third Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, 611730, China
| | - Xuanyu Xiao
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
| | - Yuanyuan Xu
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
| | - Jieyu Zhang
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
| | - Xuefeng Hu
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
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Domínguez-Aragón A, Zaragoza-Contreras EA, Figueroa-Miranda G, Offenhäusser A, Mayer D. Electrochemical Immunosensor Using Electroactive Carbon Nanohorns for Signal Amplification for the Rapid Detection of Carcinoembryonic Antigen. BIOSENSORS 2022; 13:bios13010063. [PMID: 36671898 PMCID: PMC9855668 DOI: 10.3390/bios13010063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/15/2022] [Accepted: 12/22/2022] [Indexed: 05/31/2023]
Abstract
In this work, a novel sandwich-type electrochemical immunosensor was developed for the quantitative detection of the carcinoembryonic antigen, an important tumor marker in clinical tests. The capture antibodies were immobilized on the surface of a gold disk electrode, while detection antibodies were attached to redox-tagged single-walled carbon nanohorns/thionine/AuNPs. Both types of antibody immobilization were carried out through Au-S bonds using the novel photochemical immobilization technique that ensures control over the orientation of the antibodies. The electroactive SWCNH/Thi/AuNPs nanocomposite worked as a signal tag to carry out both the detection of carcinoembryonic antigen and the amplification of the detection signal. The current response was monitored by differential pulse voltammetry. A clear dependence of the thionine redox peak was observed as a function of the carcinoembryonic antigen concentration. A linear detection range from 0.001-200 ng/mL and a low detection limit of 0.1385 pg/mL were obtained for this immunoassay. The results showed that carbon nanohorns represent a promising matrix for signal amplification in sandwich-type electrochemical immune assays working as a conductive and binding matrix with easy and versatile modification routes to antibody and redox tag immobilization, which possesses great potential for clinical diagnostics of CEA and other biomarkers.
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Affiliation(s)
- Angélica Domínguez-Aragón
- Institute of Biological Information Processing, Bioelectronics (IBI-3), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
- Centro de Investigación en Materiales Avanzados, S.C. Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Mexico
| | - Erasto Armando Zaragoza-Contreras
- Centro de Investigación en Materiales Avanzados, S.C. Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Mexico
| | - Gabriela Figueroa-Miranda
- Institute of Biological Information Processing, Bioelectronics (IBI-3), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
| | - Andreas Offenhäusser
- Institute of Biological Information Processing, Bioelectronics (IBI-3), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
| | - Dirk Mayer
- Institute of Biological Information Processing, Bioelectronics (IBI-3), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
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Li J, Yang H, Cai R, Tan W. Ultrahighly Sensitive Sandwich-Type Electrochemical Immunosensor for Selective Detection of Tumor Biomarkers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:44222-44227. [PMID: 36150034 DOI: 10.1021/acsami.2c13891] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Herein, a novel sandwich-type immunosensor was designed using Pt nanoparticle-decorated SnS2 nanoplates (Pt@SnS2) as a matrix and N,B-doped Eu MOF (N,B-Eu MOF) nanospheres as a signal amplifier. In Pt@SnS2, Pt nanoparticles (NPs) enhance the surface electron transport capability and electrochemiluminescence (ECL) performance of SnS2 nanoplates. The dual "antenna" effect of 5-boronoisophthalic acid (5-bop) and 5-nitroisophthalic acid (5-nop) enables the N,B-Eu MOFs to show very good ECL performance at the cathode. In the presence of the target carcinoembryonic antigen (CEA), the sandwich-type immunosensor provides specific immune responses, and the ECL signal of the immunosensor is greatly amplified by the signal probe N,B-Eu MOFs. In view of the above, the immunosensor was successfully applied for highly sensitive and selective detection of CEA with a detection limit of 0.06 pg·mL-1. This sensor exhibits high sensitivity and specificity, excellent stability, good reproducibility, and good practicability in real human serum.
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Affiliation(s)
- Jingxian Li
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha 410082, China
| | - Hongfen Yang
- University of Texas at Austin, Austin, Texas 78712, United States
| | - Ren Cai
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha 410082, China
| | - Weihong Tan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha 410082, China
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, and College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Zhou H, Huang R, Su T, Li B, Zhou H, Ren J, Li Z. A c-MWCNTs/AuNPs-based electrochemical cytosensor to evaluate the anticancer activity of pinoresinol from Cinnamomum camphora against HeLa cells. Bioelectrochemistry 2022; 146:108133. [DOI: 10.1016/j.bioelechem.2022.108133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 02/23/2022] [Accepted: 04/07/2022] [Indexed: 11/26/2022]
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Guo Y, Feng L. Highly Sensitive Detection of Carcinoembryonic Antigen via an Electrochemical Platform Fabricated by AuNPs/Streptavidin/Reduced Graphene Oxide. Front Chem 2022; 10:898924. [PMID: 35646828 PMCID: PMC9133321 DOI: 10.3389/fchem.2022.898924] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 04/11/2022] [Indexed: 01/21/2023] Open
Abstract
Tumor markers are one of the important indicators for early cancer diagnosis. As a new analytical method, electrochemical immunosensing analysis has the advantages of high sensitivity, good selectivity, and rapid detection, which is of great significance for the detection of tumor markers. In this work, an AuNP/reduced graphene oxide (AuNP/rGO) composite was synthesized. We used it for electrochemical sensor fabrication with the assistance of the biotin–streptavidin protein (SA) system to further amplify the signal to achieve sensitive detection of carcinoembryonic antigen (CEA). In addition, AuNPs have been incorporated due to their good electrical conductivity and biocompatibility, which can accelerate electron transfer at the electrode interface and improve the loading capacity to capture antibodies. The fabricated AuNPs/SA/rGO has a large working surface area and high material utilization ratio, which improves the catalytic capacity of H2O2 reduction and effectively amplifies the current signal. The linear range of the response current signal of the sensor toward the CEA concentration is 20 fg/ml to 200 ng/ml, and the limit of detection can achieve 6.2 fg/ml. In addition, the fabricated immunosensor has good reproducibility, selectivity, and stability.
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Nanotechnology-based approaches for effective detection of tumor markers: A comprehensive state-of-the-art review. Int J Biol Macromol 2022; 195:356-383. [PMID: 34920057 DOI: 10.1016/j.ijbiomac.2021.12.052] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 02/08/2023]
Abstract
As well-appreciated biomarkers, tumor markers have been spotlighted as reliable tools for predicting the behavior of different tumors and helping clinicians ascertain the type of molecular mechanism of tumorigenesis. The sensitivity and specificity of these markers have made them an object of even broader interest for sensitive detection and staging of various cancers. Enzyme-linked immunosorbent assay (ELISA), fluorescence-based, mass-based, and electrochemical-based detections are current techniques for sensing tumor markers. Although some of these techniques provide good selectivity, certain obstacles, including a low sample concentration or difficulty carrying out the measurement, limit their application. With the advent of nanotechnology, many studies have been carried out to synthesize and employ nanomaterials (NMs) in sensing techniques to determine these tumor markers at low concentrations. The fabrication, sensitivity, design, and multiplexing of sensing techniques have been uplifted due to the attractive features of NMs. Various NMs, such as magnetic and metal nanoparticles, up-conversion NPs, carbon nanotubes (CNTs), carbon-based NMs, quantum dots (QDs), and graphene-based nanosensors, hyperbranched polymers, optical nanosensors, piezoelectric biosensors, paper-based biosensors, microfluidic-based lab-on-chip sensors, and hybrid NMs have proven effective in detecting tumor markers with great sensitivity and selectivity. This review summarizes various categories of NMs for detecting these valuable markers, such as prostate-specific antigen (PSA), human carcinoembryonic antigen (CEA), alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), human epidermal growth factor receptor-2 (HER2), cancer antigen 125 (CA125), cancer antigen 15-3 (CA15-3, MUC1), and cancer antigen 19-9 (CA19-9), and highlights recent nanotechnology-based advancements in detection of these prognostic biomarkers.
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Xiong H, Huang Z, Lin Q, Yang B, Yan F, Liu B, Chen H, Kong J. Surface Plasmon Coupling Electrochemiluminescence Immunosensor Based on Polymer Dots and AuNPs for Ultrasensitive Detection of Pancreatic Cancer Exosomes. Anal Chem 2021; 94:837-846. [PMID: 34914878 DOI: 10.1021/acs.analchem.1c03535] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Polymer dots (Pdots) have become attractive electrochemiluminescence (ECL) luminophores due to their facile synthesis, easy modification, and stable electrochemical and optical properties. However, their ECL efficiency is not high enough for practical applications. In this work, we proposed an ECL immunosensor based on localized surface plasmon resonance (LSPR) between AuNPs and Pdots for the determination of pancreatic cancer exosomes. Based on the finite-difference time-domain simulations and the band energy of Pdots and AuNPs, we proposed the possible LSPR mechanism. The hot electrons of plasmonic AuNPs were photoexcited to surface plasmon states by ECL emission of Pdots, and then the excited hot electrons were transferred to the conduction band of Pdots, which significantly improved the ECL efficiency of Pdots. The ECL immunosensor displayed a wide calibration range of 1.0 × 103 to 1.0 × 106 particles/mL with a detection limit of 400 particles/mL. Cancer-related protein profiling revealed high selectivity toward different expressions of exosomal surface proteins from PANC-01, HeLa, MCF-7, and HPDE6-C7 cell lines. The proposed ECL system exhibits a promising prospect for protein biomarker profiling and early cancer-related diagnosis.
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Affiliation(s)
- Huiwen Xiong
- Department of Chemistry, Shanghai Stomatological Hospital, Fudan University, Shanghai 200438, China
| | - Zhipeng Huang
- Department of Chemistry, Shanghai Stomatological Hospital, Fudan University, Shanghai 200438, China
| | - Qiuyuan Lin
- Department of Chemistry, Shanghai Stomatological Hospital, Fudan University, Shanghai 200438, China
| | - Bin Yang
- Department of Chemistry, Shanghai Stomatological Hospital, Fudan University, Shanghai 200438, China
| | - Feng Yan
- Department of Clinical Laboratory, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, 42 Baiziting Road, Nanjing 210009, P. R. China
| | - Baohong Liu
- Department of Chemistry, Shanghai Stomatological Hospital, Fudan University, Shanghai 200438, China
| | - Hui Chen
- Department of Chemistry, Shanghai Stomatological Hospital, Fudan University, Shanghai 200438, China
| | - Jilie Kong
- Department of Chemistry, Shanghai Stomatological Hospital, Fudan University, Shanghai 200438, China
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Liu J, Shang Y, Xu J, Chen Y, Jia Y, Zheng J. A novel electrochemical immunosensor for carcinoembryonic antigen based on Cu-MOFs-TB/polydopamine nanocarrier. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114563] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Song H, Ma C, Wang L, Zhu Z. Platinum nanoparticle-deposited multi-walled carbon nanotubes as a NADH oxidase mimic: characterization and applications. NANOSCALE 2020; 12:19284-19292. [PMID: 32935692 DOI: 10.1039/d0nr04060f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The effective regeneration of bioactive NAD+ plays an important role in numerous dehydrogenase-dependent applications including biocatalysis and biosensing. However, this process usually suffers from high thermodynamic barrier, instability and high cost associated with natural enzymes. The emergence of nanomaterials with enzyme mimic characteristics has offered a potential alternative to many enzyme-catalyzed processes. Platinum nanoparticles (PtNPs), for example, have been extensively studied for their peroxidase- and oxidase-like activities. However, their behavior as a NADH oxidase mimic has barely been characterized in detail. Herein, we report a facile approach for preparing PtNP-deposited multi-walled carbon nanotubes (PtNPs@MWCNTs) as the nanozyme for NADH oxidation. Its enzymatic activity was investigated in depth, revealing that it is a NADH oxidase instead of a peroxidase and the catalytic process generates O2˙-, rather than OH˙ or 1O2, from dissolved O2. The recovery yield of bioactive NAD+ regeneration by the nanozyme could reach ∼100% with a total turnover number of ∼6000. Besides, it exhibited terrific electrochemical performance for NADH oxidation and sensing by greatly boosting the response and lowering the oxidation overpotential. It could also work on biomimetic cofactors with even higher activity. Finally, xylose dehydrogenase was immobilized with the nanozyme to constitute a hybrid bioelectrode for xylose sensing. The biosensor had a xylose detecting range of 5-400 μM with the limit of detection as low as 1 μM and can retain its performance after being reused several times. Our results suggest that the PtNPs@MWCNTs characterized as a NADH oxidase nanozyme hold great promise in the applications of biocatalysis and biosensing, which intensively deal with dehydrogenases and natural or biomimetic cofactors.
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Affiliation(s)
- Haiyan Song
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin Airport Economic Area, Tianjin, 300308, P. R. China.
| | - Chunling Ma
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin Airport Economic Area, Tianjin, 300308, P. R. China.
| | - Lei Wang
- National Human Genetic Resource Center, 12 Dahuisi Road, Haidian District, Beijing 100081, P.R. China
| | - Zhiguang Zhu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin Airport Economic Area, Tianjin, 300308, P. R. China. and School of Chemical Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
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Wang ZY, Li P, Cui L, Qiu JG, Jiang B, Zhang CY. Integration of nanomaterials with nucleic acid amplification approaches for biosensing. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115959] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Mounasamy V, Mani GK, Ponnusamy D, Tsuchiya K, Reshma PR, Prasad AK, Madanagurusamy S. Investigation on CH 4 sensing characteristics of hierarchical V 2O 5 nanoflowers operated at relatively low temperature using chemiresistive approach. Anal Chim Acta 2020; 1106:148-160. [PMID: 32145843 DOI: 10.1016/j.aca.2020.01.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/17/2020] [Accepted: 01/26/2020] [Indexed: 02/04/2023]
Abstract
Methane (CH4) gas, the second most potent greenhouse gas share a substantial role in contributing to the global warming and it is a necessary pre-requisite to detect the release of CH4 into the environment at its early stage to combat climate change. In that front, this work is focussed to develop an effective CH4 gas sensor using vanadium pentoxide (V2O5) thin films that works at an operating temperature of ∼100 °C. To understand the effect of sputtering power towards the structural characteristics of V2O5 films, X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HR-TEM) analysis were performed from which the orthorhombic polycrystalline structure of V2O5 thin films was confirmed with varied texture co-efficient. Further, the surface elemental studies using X-ray photoelectron spectroscopy (XPS) confirmed the prominence of V+5 oxidation state from the binding energy of V2p3/2 and O1s peak. The effect of sputtering power on the growth of different nanostructures were observed using field-emission scanning electron microscopy (FE-SEM). The critical role of adsorption and desorption kinetics of the deposited nanostructures were explained through first order kinetics based on Elovich model and the phase stability of different nanostructures were evaluated using Raman spectral analysis. This work achieved the sensor response of about ∼8% towards CH4 at an operating temperature of 100 °C towards 50 ppm concentration.
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Affiliation(s)
- Veena Mounasamy
- Functional Nanomaterials & Devices Lab, Centre for Nanotechnology & Advanced Biomaterials, School of Electrical & Electronics Engineering, SASTRA Deemed to be University, Thanjavur, 613 401, India
| | - Ganesh Kumar Mani
- Micro/Nano Technology Centre (MNTC), Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan
| | - Dhivya Ponnusamy
- Micro/Nano Technology Centre (MNTC), Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan
| | - Kazuyoshi Tsuchiya
- Micro/Nano Technology Centre (MNTC), Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan; Department of Precision Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan
| | - P R Reshma
- Nanomaterials Characterization and Sensors Section, Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam, 603102, India
| | - Arun K Prasad
- Nanomaterials Characterization and Sensors Section, Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam, 603102, India
| | - Sridharan Madanagurusamy
- Functional Nanomaterials & Devices Lab, Centre for Nanotechnology & Advanced Biomaterials, School of Electrical & Electronics Engineering, SASTRA Deemed to be University, Thanjavur, 613 401, India.
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Mounasamy V, Mani GK, Madanagurusamy S. Vanadium oxide nanostructures for chemiresistive gas and vapour sensing: a review on state of the art. Mikrochim Acta 2020; 187:253. [DOI: 10.1007/s00604-020-4182-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 02/24/2020] [Indexed: 02/02/2023]
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Khan MS, Ameer H, Ali A, Manzoor R, Yang L, Feng R, Jiang N, Wei Q. Electrochemiluminescence behaviour of silver/silver orthophosphate/graphene oxide quenched by Pd@Au core-shell nanoflowers for ultrasensitive detection of insulin. Biosens Bioelectron 2020; 147:111767. [DOI: 10.1016/j.bios.2019.111767] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/24/2019] [Accepted: 10/07/2019] [Indexed: 12/21/2022]
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14
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Wang H, Rao H, Luo M, Xue X, Xue Z, Lu X. Noble metal nanoparticles growth-based colorimetric strategies: From monocolorimetric to multicolorimetric sensors. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.06.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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15
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Cancer diagnosis using nanomaterials based electrochemical nanobiosensors. Biosens Bioelectron 2019; 126:773-784. [DOI: 10.1016/j.bios.2018.11.026] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 11/15/2018] [Accepted: 11/16/2018] [Indexed: 12/11/2022]
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16
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Dong S, Wang S, Gyimah E, Zhu N, Wang K, Wu X, Zhang Z. A novel electrochemical immunosensor based on catalase functionalized AuNPs-loaded self-assembled polymer nanospheres for ultrasensitive detection of tetrabromobisphenol A bis(2-hydroxyethyl) ether. Anal Chim Acta 2019; 1048:50-57. [DOI: 10.1016/j.aca.2018.10.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/26/2018] [Accepted: 10/09/2018] [Indexed: 12/12/2022]
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17
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Gao Z, Li Y, Zhang C, Zhang S, Li F, Wang P, Wang H, Wei Q. Label-free electrochemical immunosensor for insulin detection by high-efficiency synergy strategy of Pd NPs@3D MoSx towards H2O2. Biosens Bioelectron 2019; 126:108-114. [DOI: 10.1016/j.bios.2018.10.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 09/27/2018] [Accepted: 10/08/2018] [Indexed: 12/29/2022]
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18
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Pei F, Wang P, Ma E, Yang Q, Yu H, Gao C, Li Y, Liu Q, Dong Y. A sandwich-type electrochemical immunosensor based on RhPt NDs/NH 2-GS and Au NPs/PPy NS for quantitative detection hepatitis B surface antigen. Bioelectrochemistry 2018; 126:92-98. [PMID: 30530260 DOI: 10.1016/j.bioelechem.2018.11.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/11/2018] [Accepted: 11/16/2018] [Indexed: 12/11/2022]
Abstract
In this work, a sandwich-type electrochemical immunosensor was fabricated to quantitatively detect hepatitis B surface antigen (HBsAg). The immunosensor was based on Rh core and Pt shell nanodendrites loaded onto amino group functionalized graphene nanosheet (RhPt NDs/NH2-GS) as label and gold nanoparticles loaded onto polypyrrole nanosheet (Au NPs/PPy NS) as platform. RhPt NDs with abundant catalytic active sites because of the branched core-shell structure, RhPt NDs/NH2-GS as the label displayed high catalytic activity, amplifying the current signal of the immunosensor. Additionally, Au NPs/PPy NS enhanced the electron transfer and provided a good microenvironment to immobilize antibodies effectively, thus improving the sensitivity of the immunosensor. Based on above advantages, the immunosensor emerged a linear concentration ranging from 0.0005 to 10 ng/mL, a low detection limit of 166 fg/mL for HBsAg (S/N = 3) and good stability, selectivity, reproducibility. Furthermore, the satisfactory accuracy in analysis of actual serum samples implied the immunosensor had promising prospect in clinical analysis applications.
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Affiliation(s)
- Fubin Pei
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Ping Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China.
| | - Enhui Ma
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Qingshan Yang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Haoxuan Yu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Chunxiao Gao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Yueyun Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Qing Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Yunhui Dong
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China.
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Zhu F, Zhao G, Dou W. A non-enzymatic electrochemical immunoassay for quantitative detection of Escherichia coli O157:H7 using Au@Pt and graphene. Anal Biochem 2018; 559:34-43. [PMID: 30144412 DOI: 10.1016/j.ab.2018.08.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/17/2018] [Accepted: 08/18/2018] [Indexed: 10/28/2022]
Abstract
Herein, a non-enzymatic sandwich-type electrochemical immunoassay was fabricated for quantitative monitoring of Escherichia coli O157:H7 (E. coli O157:H7). Silica coated Fe3O4 magnetic nanoparticles (Fe3O4@SiO2) were modified with mouse anti-E. coli O157:H7 monoclonal antibody (Ab1) to act as capture probes to reduce detection time and increase the sensitivity of the immunoassay. The Au@Pt nanoparticles were loaded on neutral red (NR) functionalized graphene to form composite complex rGO-NR-Au@Pt. rGO-NR-Au@Pt has high specific surface area and good biocompatibility. rGO-NR-Au@Pt was used as the carriers of detection antibodies (Ab2). Au@Pt catalyzed the reduction of hydrogen peroxide (H2O2) to detection of E. coli O157:H7 with the thionine (TH) as electron mediator to effectually amply the current signal. Under the optimized conditions, a linear relationship between the reduction peak current change (ΔIpc) and the logarithm of the E. coli O157:H7 concentration is obtained in the range from 4.0 × 103 to 4.0 × 108 CFU mL-1 and the limit of detection (LOD) is 4.5 × 102 CFU mL-1 at a signal-to-noise ratio of 3. The immunoassay exhibits acceptable specificity, reproducibility and stability on the detection of E. coli O157:H7. Furthermore, the immunoassay showed good performance in pork and milk samples. The results suggest that this immunoassay will be promising in the food safety area.
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Affiliation(s)
- Fanjun Zhu
- Food Safety Key Laboratory of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Guangying Zhao
- Food Safety Key Laboratory of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Wenchao Dou
- Food Safety Key Laboratory of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China.
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20
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Wang Y, Zhao G, Wang H, Cao W, Du B, Wei Q. Sandwich-type electrochemical immunoassay based on Co3O4@MnO2-thionine and pseudo-ELISA method toward sensitive detection of alpha fetoprotein. Biosens Bioelectron 2018; 106:179-185. [DOI: 10.1016/j.bios.2018.02.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 01/10/2018] [Accepted: 02/01/2018] [Indexed: 12/29/2022]
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21
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Gu X, She Z, Ma T, Tian S, Kraatz HB. Electrochemical detection of carcinoembryonic antigen. Biosens Bioelectron 2018; 102:610-616. [DOI: 10.1016/j.bios.2017.12.014] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 11/28/2017] [Accepted: 12/07/2017] [Indexed: 12/26/2022]
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22
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Recent advances in design of electrochemical affinity biosensors for low level detection of cancer protein biomarkers using nanomaterial-assisted signal enhancement strategies. J Pharm Biomed Anal 2018; 147:185-210. [DOI: 10.1016/j.jpba.2017.07.042] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 12/12/2022]
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23
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Non-Invasive Breast Cancer Diagnosis through Electrochemical Biosensing at Different Molecular Levels. SENSORS 2017; 17:s17091993. [PMID: 28858236 PMCID: PMC5620508 DOI: 10.3390/s17091993] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 08/15/2017] [Accepted: 08/29/2017] [Indexed: 01/06/2023]
Abstract
The rapid and accurate determination of specific circulating biomarkers at different molecular levels with non- or minimally invasive methods constitutes a major challenge to improve the breast cancer outcomes and life quality of patients. In this field, electrochemical biosensors have demonstrated to be promising alternatives against more complex conventional strategies to perform fast, accurate and on-site determination of circulating biomarkers at low concentrations in minimally treated body fluids. In this article, after discussing briefly the relevance and current challenges associated with the determination of breast cancer circulating biomarkers, an updated overview of the electrochemical affinity biosensing strategies emerged in the last 5 years for this purpose is provided highlighting the great potentiality of these methodologies. After critically discussing the most interesting features of the electrochemical strategies reported so far for the single or multiplexed determination of such biomarkers with demonstrated applicability in liquid biopsy analysis, existing challenges still to be addressed and future directions in this field will be pointed out.
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24
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Ultrasensitive electrochemical sensing platform based on graphene wrapping SnO 2 nanocorals and autonomous cascade DNA duplication strategy. Talanta 2017; 175:168-176. [PMID: 28841974 DOI: 10.1016/j.talanta.2017.07.042] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/12/2017] [Accepted: 07/13/2017] [Indexed: 11/23/2022]
Abstract
In this work, a sensitive, universal and reusable electrochemical biosensor based on stannic oxide nanocorals-graphene hybrids (SnO2 NCs-Gr) is developed for target DNA detection by using two kinds of DNA enzymes for signal amplification through an autonomous cascade DNA duplication strategy. A hairpin probe is designed composing of a projecting part at the 3'-end as identification sequence for target, a recognition site for nicking endonuclease, and an 18-carbon shim to stop polymerization process. The designed DNA duplication-incision-replacement process is handled by KF polymerase and endonuclease, then combining with gold nanoparticles as signal carrier for further signal amplification. In the detection system, the electrochemical-chemical-chemical procedure, which uses ferrocene methanol, tris(2-carboxyethyl)phosphine and l-ascorbic acid 2-phosphate as oxidoreduction neurogen, deoxidizer and zymolyte, separately, is applied to amplify detection signal. Benefiting from the multiple signal amplification mechanism, the proposed sensor reveals a good linear connection between the peak current and logarithm of analyte concentration in range of 0.0001-1 × 10-11molL-1 with a detection limit of 1.25 × 10-17molL-1 (S/N=3). This assay also opens one promising strategy for ultrasensitive determination of other biological molecules for bioanalysis and biomedicine diagnostics.
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25
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Sandwich-type amperometric immunosensor using functionalized magnetic graphene loaded gold and silver core-shell nanocomposites for the detection of Carcinoembryonic antigen. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.04.042] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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26
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Hasanzadeh M, Shadjou N, de la Guardia M. Early stage screening of breast cancer using electrochemical biomarker detection. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.04.006] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Feng J, Li Y, Li M, Li F, Han J, Dong Y, Chen Z, Wang P, Liu H, Wei Q. A novel sandwich-type electrochemical immunosensor for PSA detection based on PtCu bimetallic hybrid (2D/2D) rGO/g-C3N4. Biosens Bioelectron 2017; 91:441-448. [DOI: 10.1016/j.bios.2016.12.070] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/23/2016] [Accepted: 12/30/2016] [Indexed: 12/01/2022]
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28
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Recent Advances in Electrochemical Immunosensors. SENSORS 2017; 17:s17040794. [PMID: 28387718 PMCID: PMC5422067 DOI: 10.3390/s17040794] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 02/08/2023]
Abstract
Immunosensors have experienced a very significant growth in recent years, driven by the need for fast, sensitive, portable and easy-to-use devices to detect biomarkers for clinical diagnosis or to monitor organic pollutants in natural or industrial environments. Advances in the field of signal amplification using enzymatic reactions, nanomaterials such as carbon nanotubes, graphene and graphene derivatives, metallic nanoparticles (gold, silver, various oxides or metal complexes), or magnetic beads show how it is possible to improve collection, binding or transduction performances and reach the requirements for realistic clinical diagnostic or environmental control. This review presents these most recent advances; it focuses first on classical electrode substrates, then moves to carbon-based nanostructured ones including carbon nanotubes, graphene and other carbon materials, metal or metal-oxide nanoparticles, magnetic nanoparticles, dendrimers and, to finish, explore the use of ionic liquids. Analytical performances are systematically covered and compared, depending on the detection principle, but also from a chronological perspective, from 2012 to 2016 and early 2017.
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Yang Y, Liu Q, Liu Y, Cui J, Liu H, Wang P, Li Y, Chen L, Zhao Z, Dong Y. A novel label-free electrochemical immunosensor based on functionalized nitrogen-doped graphene quantum dots for carcinoembryonic antigen detection. Biosens Bioelectron 2017; 90:31-38. [DOI: 10.1016/j.bios.2016.11.029] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 10/12/2016] [Accepted: 11/02/2016] [Indexed: 01/08/2023]
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30
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A novel sandwich-type immunosensor for detection of carcino-embryonic antigen using silver hybrid multiwalled carbon nanotubes/manganese dioxide. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.01.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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31
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Carbon Nanostructures for Tagging in Electrochemical Biosensing: A Review. C — JOURNAL OF CARBON RESEARCH 2017. [DOI: 10.3390/c3010003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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32
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A universal multicolor immunosensor for semiquantitative visual detection of biomarkers with the naked eyes. Biosens Bioelectron 2017; 87:122-128. [DOI: 10.1016/j.bios.2016.08.021] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 08/07/2016] [Accepted: 08/08/2016] [Indexed: 01/01/2023]
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33
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An ultrasensitive sandwich-type electrochemical immunosensor based on the signal amplification strategy of mesoporous core–shell Pd@Pt nanoparticles/amino group functionalized graphene nanocomposite. Biosens Bioelectron 2017; 87:752-759. [DOI: 10.1016/j.bios.2016.08.076] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/15/2016] [Accepted: 08/23/2016] [Indexed: 02/04/2023]
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34
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Kumar S, Rani R, Dilbaghi N, Tankeshwar K, Kim KH. Carbon nanotubes: a novel material for multifaceted applications in human healthcare. Chem Soc Rev 2017; 46:158-196. [DOI: 10.1039/c6cs00517a] [Citation(s) in RCA: 263] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Remarkable advances achieved in modern material technology, especially in device fabrication, have facilitated diverse materials to expand the list of their application fields.
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Affiliation(s)
- Sandeep Kumar
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science and Technology
- Hisar
- India
| | - Ruma Rani
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science and Technology
- Hisar
- India
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science and Technology
- Hisar
- India
| | - K. Tankeshwar
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science and Technology
- Hisar
- India
- Department of Physics
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering
- Hanyang University
- Seoul 04763
- Republic of Korea
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35
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Hasanzadeh M, Shadjou N, Lin Y, de la Guardia M. Nanomaterials for use in immunosensing of carcinoembryonic antigen (CEA): Recent advances. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2016.11.003] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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An ultrasensitive sandwich-type electrochemical immunosensor based on the signal amplification system of double-deck gold film and thionine unite with platinum nanowire inlaid globular SBA-15 microsphere. Biosens Bioelectron 2016; 91:424-430. [PMID: 28064127 DOI: 10.1016/j.bios.2016.12.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 12/28/2016] [Accepted: 12/28/2016] [Indexed: 12/24/2022]
Abstract
A novel thionine unites with platinum nanowire inlaid globular SBA-15 (Pt NWs@g-SBA-15/Thi) not only utilizes as an efficient electrical signal probe but also constitutes an amplifying system with double-deck gold film (D-Au film) have been applied to the fabrication of sandwich-type immunosensor for detecting hepatitis B surface antigen (HBs Ag). The D-Au film can accelerate the electron transfer on the electrode interface due to the tunneling effect between the two Au films and can improve the load capacity of primary antibodies (Ab1) because of the good biocompatibility. The Pt NWs@g-SBA-15/Thi with uniform globular morphology not only can effectively reduce the spatial limitation for loading the secondary antibodies (Ab2) but also can provide outstanding pore accessibility of guest species from outside and offer catalytically active sites in a large scale. Besides, the presence of Thi can well enhance the electrical conductivity of Pt NWs@g-SBA-15/Thi. With the good cooperation between D-Au film and Pt NWs@g-SBA-15/Thi, a linear relationship between current signals and the concentrations of HBs Ag was obtained in the wide range from 10 fg/mL to 100ng/mL and the detection limit of HBs Ag was 3.3 fg/mL (signal-to-noise ratio of 3). Furthermore, the designed immunosensor with excellent selectivity, reproducibility and stability shows excellent performance in detection of human serum samples and provides a promising capacity for detecting a wide range of other tumor markers in clinical application.
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37
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Cheng H, Xu L, Zhang H, Yu A, Lai G. Enzymatically catalytic signal tracing by a glucose oxidase and ferrocene dually functionalized nanoporous gold nanoprobe for ultrasensitive electrochemical measurement of a tumor biomarker. Analyst 2016; 141:4381-7. [PMID: 27186605 DOI: 10.1039/c6an00651e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A nanoporous gold nanosphere (pAu NS) was synthesized to load high-content glucose oxidase (GOx) and ferrocene (Fc) for the successful preparation of a new gold nanoprobe. After the specific recognition of the tumor biomarker of carcinoembryonic antigen (CEA) at a gold electrode based aptasensor, this GOx and Fc dually functionalized pAu NS nanoprobe was further used for sandwich immunoreaction and signal tracing. Based on the Fc-mediated GOx-catalytic reaction, the gold nanoprobes quantitatively captured onto the electrode surface produced a sensitive electrochemical signal corresponding to the protein recognition events, which led to the development of a new biosensing method for CEA measurement. Both the high loading of GOx and Fc on the pAu NS nanocarrier and the enzymatically catalytic reaction of the nanoprobe greatly amplify the electrochemical signal; meanwhile, the immobilization of the Fc mediator on this enzyme nanoprobe and the highly specific aptamer recognition drastically decrease the background current, resulting in the achievement of ultrahigh sensitivity of the method. Under optimum conditions, this method shows an excellent analytical performance including a wide linear relationship of five-order of magnitude and a low detection limit down to 0.45 pg mL(-1). Thus this pAu NS based gold nanoprobe and the proposed immunoassay method provide great potential for practical applications.
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Affiliation(s)
- Hui Cheng
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Department of Chemistry, Hubei Normal University, Huangshi 435002, PR China.
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38
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Chu Y, Wang H, Ma H, Wu D, Du B, Wei Q. Sandwich-type electrochemical immunosensor for ultrasensitive detection of prostate-specific antigen using palladium-doped cuprous oxide nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra13841a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new and facile sandwich-type electrochemical immunosensor is proposed for the ultrasensitive detection of prostate-specific antigen (PSA) based on Au nanoparticles (Au NPs) and palladium-doped cuprous oxide nanoparticles (Pd@Cu2O NPs).
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Affiliation(s)
- Yanguang Chu
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Huan Wang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Hongmin Ma
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Dan Wu
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Bin Du
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Qin Wei
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
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