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Zhang S, Wu C, Zhao Z, Xu K. An Electrochemical Immunosensor Based on Chitosan-Graphene Nanosheets for Aflatoxin B1 Detection in Corn. Molecules 2024; 29:1461. [PMID: 38611741 PMCID: PMC11013039 DOI: 10.3390/molecules29071461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/17/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
We reported a highly efficient electrochemical immunosensor utilizing chitosan-graphene nanosheets (CS-GNs) nanocomposites for the detection of aflatoxin B1 (AFB1) in corn samples. The CS-GNs nanocomposites, serving as a modifying layer, provide a significant specific surface area and biocompatibility, thereby enhancing both the electron transfer rate and the efficiency of antibody immobilization. The electrochemical characterization was conducted utilizing both differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). Moreover, the antibody concentration, pH, antibody immobilization time, and immunoreaction time, were optimized. The results showed that the current change (ΔI) before and after the immunoreaction demonstrated a strong linear relationship (R2=0.990) with the AFB1 concentration, as well as good specificity and stability. The linear range extended from 0.05 to 25 ng/mL, with a detection limit of 0.021 ng/mL (S/N=3). The immunosensor exhibited a recovery rate ranging from 97.3% to 101.4% in corn samples, showing a promising performance using an efficient method, and indicating a remarkable prospect for the detection of fungal toxins in grains.
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Affiliation(s)
- Shuai Zhang
- Key Laboratory of Grain Information Processing and Control (Henan University of Technology), Ministry of Education, Zhengzhou 450001, China;
- Henan Key Laboratory of Grain Photoelectric Detection and Control, Henan University of Technology, Zhengzhou 450001, China
- College of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, China;
| | - Caizhang Wu
- College of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, China;
| | - Zhike Zhao
- College of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, China;
| | - Kun Xu
- Key Laboratory of Grain Information Processing and Control (Henan University of Technology), Ministry of Education, Zhengzhou 450001, China;
- Henan Key Laboratory of Grain Photoelectric Detection and Control, Henan University of Technology, Zhengzhou 450001, China
- College of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, China;
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2
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Huang H, Chen Y, Zuo J, Deng C, Fan J, Bai L, Guo S. MXene-incorporated C 60NPs and Au@Pt with dual-electric signal outputs for accurate detection of Mycobacterium tuberculosis ESAT-6 antigen. Biosens Bioelectron 2023; 242:115734. [PMID: 37832350 DOI: 10.1016/j.bios.2023.115734] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023]
Abstract
Rapid and effective detection of Mycobacterium tuberculosis (MTB) is the crux of minimizing tuberculosis (TB) spread. Consequently, a new electrochemical aptasensor based on dual-signal output for ultrasensitive detection of MTB early secreted antigenic target 6 (ESAT-6) antigen was developed. Especially, a new nanocomposite MXene/C60NPs/Au@Pt was synthesized for signal generation and amplification. In this biosensing architecture, dual independent signal outputs were achieved by coupling the electrochemical redox activity of fullerene nanoparticles (C60NPs) with the effective electrocatalytic activity of Au@Pt nanoparticles. MXene possesses a large specific surface area, allowing densely loaded of these two electroactive materials, further improved sensing capability. In addition, specific ESAT-6 antigen binding aptamers were attached to Au@Pt to create the tracer label. With a typical sandwich format along with the introduction of the gold nanoparticle-loaded molybdenum disulfide (MoS2-Au) as the sensing interface, the limit of detection (LOD) of the proposed aptasensor was 2.88 fg mL-1 (DPV measurement) and 13.50 fg mL-1 (IT measurement), respectively, with a broad linear range of 100 fg mL-1 to 50 ng mL-1. Significantly, it exhibited better specificity and accuracy with a sensitivity of 97.5% and a specificity of 96.7% to distinguish healthy donors, other lung diseases and TB patients compared to commercial ELISA assay, holding a promising prospect in clinical diagnosis.
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Affiliation(s)
- He Huang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Yuhan Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Jianli Zuo
- Chongqing Research Center for Pharmaceutical Engineering, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China
| | - Can Deng
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Junling Fan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Lijuan Bai
- Chongqing Research Center for Pharmaceutical Engineering, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China.
| | - Shuliang Guo
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China.
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3
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Wang L, Ma P, Chen H, Chang M, Lu P, Chen N, Zhang X, Li Y, Sui M. Rapid and ultrasensitive detection of acute kidney injury biomarkers CH3L1 and L-FABP using surface-enhanced Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 295:122604. [PMID: 36947940 DOI: 10.1016/j.saa.2023.122604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Chitinase 3-like 1 (CH3L1) and liver fatty acid binding protein (L-FABP) are promising biomarkers for the early diagnosis of acute kidney injury (AKI). Here, a highly sensitive method for the quantitative detection of CH3L1 and L-FABP by surface-enhanced Raman spectroscopy (SERS) based on graphene oxide/gold and silver core-shell nanoparticles (GO/Au@Ag NPs) was proposed. The results showed that such GO/Au@Ag substrate can achieve rapid sensing of CH3L1 and L-FABP with a wide response range (2 × 10-1 to 2 × 10-8 mg/mL and 1.2 × 10-1 to 1.2 × 10-8 mg/mL, respectively) and high sensitivity. The detection limits of CH3L1 and L-FABP were 1.21 × 10-8 mg/mL and 0.62 × 10-8 mg/mL, respectively. In addition, the simultaneous detection of the two biomarkers in serum was demonstrated, showing the feasibility of this method in the complex biological environment. The detection of CH3L1 and L-FABP will greatly improve the early diagnosis and intervention of AKI.
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Affiliation(s)
- Luyao Wang
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, College of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Pei Ma
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, College of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Hui Chen
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, College of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Min Chang
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, College of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ping Lu
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, College of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Nan Chen
- School of Electrical Engineering, Nantong University, Nantong 226019, China
| | - Xuedian Zhang
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, College of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai Institute of Intelligent Science and Technology, Tongji University, Shanghai 200092, China
| | - Yanhua Li
- Department of Organ Transplantation, Shanghai Changhai Hospital, Shanghai 200433, China
| | - Mingxing Sui
- Department of Organ Transplantation, Shanghai Changhai Hospital, Shanghai 200433, China.
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4
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Wang WB, Li JJ, Weng GJ, Zhu J, Guo YB, Zhao JW. An anisotropic nanobox based core-shell-satellite nanoassembly of multiple SERS enhancement with heterogeneous interface for stroke marker determination. J Colloid Interface Sci 2023; 647:81-92. [PMID: 37245272 DOI: 10.1016/j.jcis.2023.05.137] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/05/2023] [Accepted: 05/20/2023] [Indexed: 05/30/2023]
Abstract
Herein, A novel gold-silver alloy nanobox (AuAgNB)@SiO2-gold nanosphere (AuNP) nanoassembly based on core-shell-satellite structure is fabricated and applied to the surface-enhanced Raman scattering (SERS) detection of S100 calcium-binding protein B protein (S100B). It contains an anisotropic hollow porous AuAgNB core with rough surface, an ultrathin silica interlayer labeled with reporter molecules, and AuNP satellites. The nanoassemblies were systematically optimized by tuning the reporter molecules concentration, silica layer thickness, AuAgNB size, and the size and number of AuNP satellite size. Remarkably, AuNP satellites are adjacent to AuAgNB@SiO2, developing AuAg-SiO2-Au heterogeneous interface. With the strong plasmon coupling between AuAgNB and AuNP satellites, chemical enhancement from heterogeneous interface, and the tip "hot spots" of AuAgNB, the SERS activity of the nanoassemblies was multiply enhanced. Additionally, the stability of nanostructure and Raman signal was significantly improved by the silica interlayer and AuNP satellites. Eventually, the nanoassemblies were applied for S100B detection. It demonstrated satisfactory sensitivity and reproducibility with a wide detection range of 10 fg/mL-10 ng/mL and a limit of detection (LOD) of 1.7 fg/mL. This work based on the AuAgNB@SiO2-AuNP nanoassemblies with multiple SERS enhancements and favorable stability demonstrates the promising application in stroke diagnosis.
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Affiliation(s)
- Wei-Bin Wang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Jun Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Guo-Jun Weng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yu-Bo Guo
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jun-Wu Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
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5
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Zhang M, Guo X. Gold/platinum bimetallic nanomaterials for immunoassay and immunosensing. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214578] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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6
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Zhao X, Zhu A, Wang Y, Zhang Y, Zhang X. Sunflower-Like Nanostructure with Built-In Hotspots for Alpha-Fetoprotein Detection. Molecules 2021; 26:molecules26041197. [PMID: 33672380 PMCID: PMC7926938 DOI: 10.3390/molecules26041197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/08/2021] [Accepted: 02/16/2021] [Indexed: 11/16/2022] Open
Abstract
In the present study, a sunflower-like nanostructure array composed of a series of synaptic nanoparticles and nanospheres was manufactured through an efficient and low-cost colloidal lithography technique. The primary electromagnetic field contribution generated by the synaptic nanoparticles of the surface array structures was also determined by a finite-difference time-domain software to simulate the hotspots. This structure exhibited high repeatability and excellent sensitivity; hence, it was used as a surface-enhanced Raman spectroscopy (SERS) active substrate to achieve a rapid detection of ultra-low concentrations of Alpha-fetoprotein (AFP). This study demonstrates the design of a plasmonic structure with strong electromagnetic coupling, which can be used for the rapid detection of AFP concentration in clinical medicine.
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Affiliation(s)
- Xiaoyu Zhao
- School of Material and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; (X.Z.); (Y.W.)
| | - Aonan Zhu
- College of Chemistry, Nankai University, Tianjin 300071, China;
| | - Yaxin Wang
- School of Material and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; (X.Z.); (Y.W.)
| | - Yongjun Zhang
- School of Material and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; (X.Z.); (Y.W.)
- Correspondence: or
| | - Xiaolong Zhang
- College of Physics, Jilin Normal University, Changchun 130103, China;
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7
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An efficient label-free immunosensor based on ce-MoS2/AgNR composites and screen-printed electrodes for PSA detection. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04872-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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8
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Cao L, Xiao H, Fang C, Zhao F, Chen Z. Electrochemical immunosensor based on binary nanoparticles decorated rGO-TEPA as magnetic capture and Au@PtNPs as probe for CEA detection. Mikrochim Acta 2020; 187:584. [PMID: 32990786 DOI: 10.1007/s00604-020-04559-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 09/13/2020] [Indexed: 10/23/2022]
Abstract
Using gold and magnetic nanoparticles co-decorated reduced graphene oxide-tetraethylenepentamine (rGO-TEPA/Au-MNPs) as the magnetic platform for capturing the primary antibody (Ab1), separation and preconcentration of immunocomplex, a novel homogeneous electrochemical immunosensor was successfully developed. The newly prepared magnetic rGO-TEPA/Au-MNPs, compared with MNPs, exhibited better stability and enhanced electrical conductivity attributed to rGO-TEPA, and showed higher biorecognition efficiency due to AuNPs. In addition, Au@PtNPs were prepared and modified with secondary antibody (Ab2) as an efficient signal probe for signal readout. Using carcinoembryonic antigen (CEA) as a model analyte, the prepared immunosensor demonstrated satisfactory properties like high stability, good repeatability and selectivity, wide linear range (5.0 pg mL-1~200.0 ng mL-1) as well as low detection limit (1.42 pg mL-1). The homogenous electrochemical immunosensor was applied to the detection of CEA in human serum and was found to exhibit good correlation with the reference method. Thus, the proposed rGO-TEPA/Au-MNPs-based homogenous immunoassay platform might open up a new way for biomarker diagnosis. Graphical Abstract.
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Affiliation(s)
- Liangli Cao
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, 541004, China.,School of Information and Communication, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Haolin Xiao
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, 541004, China.,School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Cheng Fang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Feijun Zhao
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, 541004, China.,School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Zhencheng Chen
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, 541004, China. .,School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin, 541004, China.
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9
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Zhu A, Zhao X, Cheng M, Chen L, Wang Y, Zhang X, Zhang Y, Zhang X. Nanohoneycomb Surface-Enhanced Raman Spectroscopy-Active Chip for the Determination of Biomarkers of Hepatocellular Carcinoma. ACS APPLIED MATERIALS & INTERFACES 2019; 11:44617-44623. [PMID: 31689073 DOI: 10.1021/acsami.9b16288] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Overexpression of the Lens culinaris agglutinin-reactive fraction of alpha-fetoprotein (AFP-L3) is an essential biomarker for early diagnosis of hepatocellular carcinoma (HCC). In this study, we designed a new surface-enhanced Raman spectroscopy active chip for the detection of AFP with high sensitivity and excellent repeatability. This chip was composed of a honeycomb gold nanostructure array with strong electromagnetic field coupling due to the special cavity geometric characteristics of the honeycomb structure. The honeycomb structure exhibited extraordinary performance for the specific detection of AFP in the range of 0.003-3 ng/mL and also determined the proportion of AFP-L3 with a high degree of accuracy, which has shown great potential for application in the clinical diagnosis of HCC.
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Affiliation(s)
- Aonan Zhu
- Key Laboratory of Functional Materials Physics and Chemistry, Ministry of Education, College of Physics , Jilin Normal University , Changchun 130103 , P.R. China
| | - Xiaoyu Zhao
- School of Material and Environmental Engineering , Hangzhou Dianzi University , Hangzhou 310018 , P.R. China
| | - Mingyu Cheng
- Key Laboratory of Functional Materials Physics and Chemistry, Ministry of Education, College of Physics , Jilin Normal University , Changchun 130103 , P.R. China
| | - Lei Chen
- College of Chemistry , Jilin Normal University , Siping 136000 , P.R. China
| | - Yaxin Wang
- Key Laboratory of Functional Materials Physics and Chemistry, Ministry of Education, College of Physics , Jilin Normal University , Changchun 130103 , P.R. China
| | - Xiaolong Zhang
- Key Laboratory of Functional Materials Physics and Chemistry, Ministry of Education, College of Physics , Jilin Normal University , Changchun 130103 , P.R. China
| | - Yongjun Zhang
- School of Material and Environmental Engineering , Hangzhou Dianzi University , Hangzhou 310018 , P.R. China
| | - Xuefeng Zhang
- School of Material and Environmental Engineering , Hangzhou Dianzi University , Hangzhou 310018 , P.R. China
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10
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Lima D, Inaba J, Clarindo Lopes L, Calaça GN, Los Weinert P, Lenzi Fogaça R, Ferreira de Moura J, Magalhães Alvarenga L, Cavalcante de Figueiredo B, Wohnrath K, Andrade Pessôa C. Label-free impedimetric immunosensor based on arginine-functionalized gold nanoparticles for detection of DHEAS, a biomarker of pediatric adrenocortical carcinoma. Biosens Bioelectron 2019; 133:86-93. [PMID: 30909017 DOI: 10.1016/j.bios.2019.02.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 02/23/2019] [Indexed: 12/17/2022]
Abstract
Pediatric adrenocortical carcinoma (pACC) is a rare and aggressive malignancy of high occurrence in Southern Brazil. pACC is characterized by the usual overproduction of dehydroepiandrosterone sulfate (DHEAS), whose detection in serum or plasma can be effective to the early diagnosis of the disease. Therefore, the present paper reports, for the first time, the construction and application of a label-free impedimetric immunosensor to detect DHEAS, which was based on the modification of an oxidized glassy carbon electrode with arginine-functionalized gold nanoparticles (AuNPs-ARG) and anti-DHEA IgM antibodies (ox-GCE/AuNPs-ARG/IgM). AuNPs-ARG was synthesized by a green route, and characterized by UV-VIS spectroscopy, FTIR, TEM, DLS, and XRD. The construction of ox-GCE/AuNPs-ARG/IgM was optimized through factorial design and response surface methodology. Cyclic voltammetry and electrochemical impedance spectroscopy measurements were employed to characterize the optimized immunosensor. The DHEAS detection principle was based on the variation of charge transfer resistance (∆Rct) relative to the Fe(CN)64-/3- electrochemical probe after immunoassays in the presence of the biomarker. A linear relationship between ∆Rct and DHEAS concentration was verified in the range from 10.0 to 110.0 µg dL-1, with a LOD of 7.4 µg dL-1. Besides the good sensitivity, the immunosensor displayed accuracy, stability, and specificity to detect DHEAS. The promising analytical performance of ox-GCE/AuNPs-ARG/IgM was confirmed by quantifying DHEAS in real patient plasma samples, with results that were comparable to the reference chemiluminescence assay. Our results suggest that the presented immunosensor can find clinical applications in the early diagnosis of pACC and to monitor DHEAS levels in other adrenal pathologies.
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Affiliation(s)
- Dhésmon Lima
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Juliana Inaba
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Luma Clarindo Lopes
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Giselle Nathaly Calaça
- Department of Chemistry, Instituto Federal do Paraná, Rodovia PR 323, KM 310, 87507-014 Umuarama, Paraná, Brazil
| | - Patrícia Los Weinert
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Rafaela Lenzi Fogaça
- Department of Basic Pathology, Universidade Federal do Paraná, Av. Coronel Francisco H. dos Santos, 100, 81530-000 Curitiba, Paraná, Brazil
| | - Juliana Ferreira de Moura
- Department of Basic Pathology, Universidade Federal do Paraná, Av. Coronel Francisco H. dos Santos, 100, 81530-000 Curitiba, Paraná, Brazil
| | - Larissa Magalhães Alvarenga
- Department of Basic Pathology, Universidade Federal do Paraná, Av. Coronel Francisco H. dos Santos, 100, 81530-000 Curitiba, Paraná, Brazil
| | - Bonald Cavalcante de Figueiredo
- Department of Community Health, Universidade Federal do Paraná, Rua Padre Camargo, 261, 80069-240 Curitiba, Paraná, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, Av. Silva Jardim, 1632, 80250-060 Curitiba, Paraná, Brazil
| | - Karen Wohnrath
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil
| | - Christiana Andrade Pessôa
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, Paraná, Brazil.
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11
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Zhang C, Zhang S, Jia Y, Li Y, Wang P, Liu Q, Xu Z, Li X, Dong Y. Sandwich-type electrochemical immunosensor for sensitive detection of CEA based on the enhanced effects of Ag NPs@CS spaced Hemin/rGO. Biosens Bioelectron 2019; 126:785-791. [DOI: 10.1016/j.bios.2018.11.039] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 11/23/2018] [Accepted: 11/26/2018] [Indexed: 10/27/2022]
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12
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Yang Y, Zhu J, Zhao J, Weng GJ, Li JJ, Zhao JW. Growth of Spherical Gold Satellites on the Surface of Au@Ag@SiO 2 Core-Shell Nanostructures Used for an Ultrasensitive SERS Immunoassay of Alpha-Fetoprotein. ACS APPLIED MATERIALS & INTERFACES 2019; 11:3617-3626. [PMID: 30608142 DOI: 10.1021/acsami.8b21238] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The identification and detection of cancer biomarkers in early stages is an important issue for the therapy of cancer. However, most methods are time-consuming and have limited sensing sensitivity and specificity. In this work, we prepared a novel plasmonic multilayered core-shell-satellite nanostructure (Au@Ag@SiO2-AuNP) consisting of a gold nanosphere with a silver coating core (Au@Ag), an ultrathin continuous silica (SiO2) shell, and a high coverage of gold nanosphere (AuNP) satellites. The Au@Ag core is a prominent surface enhanced Raman scattering (SERS) platform, and the thin SiO2 layer exhibits a long-range plasmon coupling between the Au@Ag core to the AuNP satellites, further leading to enhanced Raman scattering. Meanwhile, the outer AuNP satellites have a high biocompatibility and long-term stability. Combining the above advantages, the well-designed metallic nanoassemblies would be a promising candidate for SERS-based applications in biochemistry. For specific detection of alpha-fetoprotein (AFP), we utilized the SERS-active core-shell-satellite nanostructures modified with AFP antibody as immune probes and nitrocellulose membrane (NC) stabilized captured anti-AFP antibodies as solid substrate. To improve the detection performance, we further systematically optimized the parameters, including the silver coating thickness of the Au@Ag core and the density and size of the satellite AuNPs. Under the optimized conditions, AFP could be detected by the SERS-based sandwich immunoassay with an ultralow detection limit of 0.3 fg/mL, and the method exhibited a wide linear response from 1 fg/mL to 1 ng/mL. The limit of detection (LOD) was considerably lower than conventional methods in the literature. This work relies on the unique Au@Ag@SiO2-AuNP nanostructures as the immune probe develops a new outlook for the application of multilayered nanoassemblies and demonstrates the great potential in early tumor marker detection.
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Affiliation(s)
- Ying Yang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Jian Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Jing Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Guo-Jun Weng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Jian-Jun Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Jun-Wu Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology , Xi'an Jiaotong University , Xi'an 710049 , China
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13
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Hu H, Pan D, Xue H, Zhang M, Zhang Y, Shen Y. A photoelectrochemical immunoassay for tumor necrosis factor-α using a GO-PTCNH2 nanohybrid as a probe. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.07.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Pan D, Li G, Hu H, Xue H, Zhang M, Zhu M, Gong X, Zhang Y, Wan Y, Shen Y. Direct Immunoassay for Facile and Sensitive Detection of Small Molecule Aflatoxin B 1 based on Nanobody. Chemistry 2018; 24:9869-9876. [PMID: 29766584 DOI: 10.1002/chem.201801202] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/14/2018] [Indexed: 01/07/2023]
Abstract
Aflatoxin B1 (AFB1 ), one of the most toxic mycotoxins, is classified as a group I carcinogen and ubiquitous in various foods and agriproducts. Thus, accurate and sensitive determination of AFB1 is of great significance to meet the criteria of food safety. Direct detection of AFB1 is difficult by monoclonal antibody (mAb) with large molecular size (≈150 kD) since the target is too small to produce a detectable signal change. Herein, by combining the electrochemical properties of nanomaterials and the advantages of nanobodies, we developed a direct, highly selective and sensitive electrochemical immunosensor for small molecule detection. The proposed immunosensor had a wide calibration range of 0.01 to 100 ng mL-1 and a low detection limit of 3.3 pg mL-1 (S/N=3). Compared with the immunosensor prepared with mAb which was applied in the typical indirect immunoassay, the immunosensor in this work possessed two orders of magnitudes wider linear range and 10-fold more sensitivity. The as-obtained immunosensor was further successfully applied for sensing AFB1 in real samples. This proposed assay would provide a simple, highly sensitive and selective approach for the direct immunoassay of small molecule AFB1 , and is extendable to the development of direct immunosensing systems for other small molecules detection by coupling nanocarbon and nanobody.
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Affiliation(s)
- Deng Pan
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Guanghui Li
- Shanghai Novamab Biopharmaceuticals Co., Ltd., 201203, Shanghai, China
| | - Huizhen Hu
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Huaijia Xue
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Mingming Zhang
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Min Zhu
- Shanghai Novamab Biopharmaceuticals Co., Ltd., 201203, Shanghai, China
| | - Xue Gong
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Yuanjian Zhang
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Yakun Wan
- Shanghai Novamab Biopharmaceuticals Co., Ltd., 201203, Shanghai, China
| | - Yanfei Shen
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
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15
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Yuan Q, He J, Niu Y, Chen J, Zhao Y, Zhang Y, Yu C. Sandwich-type biosensor for the detection of α2,3-sialylated glycans based on fullerene-palladium-platinum alloy and 4-mercaptophenylboronic acid nanoparticle hybrids coupled with Au-methylene blue-MAL signal amplification. Biosens Bioelectron 2018; 102:321-327. [DOI: 10.1016/j.bios.2017.11.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/24/2017] [Accepted: 11/12/2017] [Indexed: 01/05/2023]
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16
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Ji R, Chen S, Xu W, Qin Z, Qiu JF, Li CR. A voltammetric immunosensor for clenbuterol based on the use of a MoS 2-AuPt nanocomposite. Mikrochim Acta 2018; 185:209. [PMID: 29594630 DOI: 10.1007/s00604-018-2746-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 02/20/2018] [Indexed: 10/17/2022]
Abstract
An ultrasensitive immunosensor for the direct detection of the illegally used livestock feed clebuterol (CLB) is described. It is based on the use of a glassy carbon electrode modified with an MoS2-AuPt nanocomposite and on biotin-streptavidin interaction. The use of MoS2-AuPt accelerates electron transfer, and this leads to a sharp increase in the electrochemical signal for the electrochemical probe hydrogen peroxide. Differential pulse voltammetry was used to record the current signal at a peak potential of -0.18 V (vs SCE). Under optimal conditions, the electrode has a linear response in the 10 pg·mL-1 to 100 ng·mL-1 CLB concentration range and a 6.9 pg·mL-1 detection limit (based on the 3σ criterium). This immunosensor is sensitive, highly specific and acceptably reproducible, and thus represents a valuable tool for the determination of CLB in pork. Graphical abstract Schematic of a voltammetric immunosensor for the determination of clenbuterol (CLB) based on the use of a nanocomposite prepared from molybdenum disulfide and a gold-platinum alloy (MoS2-AuPt), and making use of the biotin-streptavidin system.
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Affiliation(s)
- Renyue Ji
- School of Public Health and Management, Chongqing Medical University, Box 197#, No.1 ,Yi Xue Yuan Road, Yuzhong district, Chongqing, 400016, People's Republic of China
| | - Shuai Chen
- School of Public Health and Management, Chongqing Medical University, Box 197#, No.1 ,Yi Xue Yuan Road, Yuzhong district, Chongqing, 400016, People's Republic of China
| | - Wei Xu
- School of Public Health and Management, Chongqing Medical University, Box 197#, No.1 ,Yi Xue Yuan Road, Yuzhong district, Chongqing, 400016, People's Republic of China
| | - Zhen Qin
- School of Public Health and Management, Chongqing Medical University, Box 197#, No.1 ,Yi Xue Yuan Road, Yuzhong district, Chongqing, 400016, People's Republic of China
| | - Jing Fu Qiu
- School of Public Health and Management, Chongqing Medical University, Box 197#, No.1 ,Yi Xue Yuan Road, Yuzhong district, Chongqing, 400016, People's Republic of China.
| | - Chao Rui Li
- School of Public Health and Management, Chongqing Medical University, Box 197#, No.1 ,Yi Xue Yuan Road, Yuzhong district, Chongqing, 400016, People's Republic of China.
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17
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Li Y, He J, Chen J, Niu Y, Zhao Y, Zhang Y, Yu C. A dual-type responsive electrochemical immunosensor for quantitative detection of PCSK9 based on n-C60-PdPt/N-GNRs and Pt-poly (methylene blue) nanocomposites. Biosens Bioelectron 2018; 101:7-13. [DOI: 10.1016/j.bios.2017.09.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 09/14/2017] [Accepted: 09/25/2017] [Indexed: 01/01/2023]
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18
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Zhang C, He J, Zhang Y, Chen J, Zhao Y, Niu Y, Yu C. Cerium dioxide-doped carboxyl fullerene as novel nanoprobe and catalyst in electrochemical biosensor for amperometric detection of the CYP2C19*2 allele in human serum. Biosens Bioelectron 2017; 102:94-100. [PMID: 29127901 DOI: 10.1016/j.bios.2017.11.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/10/2017] [Accepted: 11/01/2017] [Indexed: 12/21/2022]
Abstract
The disposition dose of clopidogrel is different in CYP2C19*2 gene carriers and non-carriers. High-dose clopidogrel has been recommended to overcome a low-responsiveness to clopidogrel in patients with the CYP2C19*2 gene. To guide the choice of clopidogrel dosage and catalyse a development in the field of personalized therapy, we developed an ultrasensitive electrochemical biosensor to detect CYP2C19*2 gene. We constructed a novel assay based on cerium dioxide (CeO2)-functionalized carboxyl fullerene (c-C60) supported by Pt nanoparticles (c-C60/CeO2/PtNPs) for signal amplification. Au nanoparticles @ Fe-MIL-88NH2 (AuNPs@Fe-MOFs) were synthesized by one-step method as the support platform to enhance the conductivity and immobilize more biotin-modified capture probe (bio-CP) through the superior affinity and specificity between streptavidin and biotin. c-C60/CeO2/PtNPs were labeled with signal probe to form the signal label. After the sandwich reaction of CYP2C19*2 gene between capture probe and the signal label, a distinguishing electrochemical signal from the catalysis of H2O2 by signal label would be observed. Amperometry was applied to record electrochemical signals. Under optimized conditions, the approach showed a good linear dependence between current and the logarithm of CYP2C19*2 gene concentrations in the range of 1 fM to 50nM with a low detection limit of 0.33fM (S/N = 3). The proposed method showed good specificity to target DNA compared with possible interfering substances. More importantly, the fabricated biosensor achieved accurate quantitative detection of CYP2C19*2 gene in human serum samples demonstrated by excellent correlations with standard DNA sequencing and provided a promising strategy for electrochemical biosensor detection of other gene mutations.
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Affiliation(s)
- Chengli Zhang
- College of Pharmacy, Institute of Life Science and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China
| | - Junlin He
- College of Pharmacy, Institute of Life Science and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China
| | - Yuchan Zhang
- College of Pharmacy, Institute of Life Science and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China
| | - Jun Chen
- College of Pharmacy, Institute of Life Science and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China
| | - Yilin Zhao
- College of Pharmacy, Institute of Life Science and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China
| | - Yazhen Niu
- College of Pharmacy, Institute of Life Science and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China
| | - Chao Yu
- College of Pharmacy, Institute of Life Science and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China.
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A sensitive label-free electrochemical immunosensor for detection of cytokeratin 19 fragment antigen 21-1 based on 3D graphene with gold nanopaticle modified electrode. Talanta 2017; 178:122-128. [PMID: 29136801 DOI: 10.1016/j.talanta.2017.09.020] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/31/2017] [Accepted: 09/07/2017] [Indexed: 01/31/2023]
Abstract
Previous studies have confirmed that cytokeratin 19 fragment antigen 21-1 (CYFRA 21-1) serves as a powerful biomarker in non-small cell lung cancer (NSCLC). Herein, we report for the first time a label-free electrochemical immunosensor for sensitive and selective detection of tumor marker CYFRA21-1. In this work, three-dimensional graphene @ gold nanoparticles (3D-G@Au) nanocomposite was modified on the glassy carbon electrode (GCE) surface to enhance the conductivity of immunosensor. The anti-CYFRA21-1 captured and fixed on the modified GCE through the cross-linking of chitosan (CS), glutaraldehyde (GA) and anti-CYFRA21-1. The differential pulse voltammetry (DPV) peak current change due to the specific interaction between anti-CYFRA21-1 and CYFRA21-1 on the modified electrode surface was utilized to detect CYFRA21-1. Under optimized conditions, the proposed electrochemical immunosensor was employed to detect CYFRA21-1 and exhibited a wide linear range of 0.25-800ngmL-1 and low detection limit of 100pgmL-1 (S/N = 3). Moreover, the recovery rates of serum samples were in the range from 95.2% to 108.7% and the developed immunosensor also shows a good correlation (less than 6.6%) with enzyme-linked immunosorbent assay (ELISA) in the detection of clinical serum samples. Therefore, it is expected that the proposed immunosensor based on a 3D-G@Au has great potential in clinical medical diagnosis of CYFRA21-1.
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20
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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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21
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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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22
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Prado TMD, Cincotto FH, Machado SA. Spectroelectrochemical study of acetylsalicylic acid in neutral medium and its quantification in clinical and environmental samples. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.03.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Yang L, Gao MX, Zhan L, Gong M, Zhen SJ, Huang CZ. An enzyme-induced Au@Ag core-shell nanoStructure used for an ultrasensitive surface-enhanced Raman scattering immunoassay of cancer biomarkers. NANOSCALE 2017; 9:2640-2645. [PMID: 28155925 DOI: 10.1039/c6nr07979b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Early detection of cancer is helpful for the control and prevention of diseases. Due to the low content of cancer biomarkers in the early disease phases, however, an ultrasensitive and selective method is critical. In this contribution, an ultrasensitive surface-enhanced Raman scattering (SERS) immunoassay is newly developed with the principle of introducing a common enzyme-induced deposition (EID) reaction to coat a silver layer on the surface of gold nanoparticles and to form a core-shell nanostructure of Au@Ag. By using alkaline phosphatase (ALP) to dephosphorylate its substrate, 2-phospho-l-ascorbic acid trisodium salt (AAP), to form vitamin C, silver ions could be reduced into silver atoms and coated on the surface of the AuNPs; a greatly enhanced SERS signal was then obtained. As a proof of concept, α-fetoprotein (AFP) was detected as a target, which is a biomarker of liver cancer. Excellent analytical performance of the SERS immunoassay could be achieved in the range from 0.5 to 100 pg mL-1 with a limit of detection of 0.081 pg mL-1 (3σ). Identical results could be obtained by using the newly proposed SERS immunoassay for the clinical detection of AFP in serum samples of patients to those clinically obtained by chemiluminescence immunoassays, demonstrating the potential applications of the developed method in clinical diagnosis.
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Affiliation(s)
- Lin Yang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China.
| | - Ming Xuan Gao
- Chongqing Key Laboratory of Biomedical Analysis (Southwest University), Chongqing Science & Technology Commission, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R.China.
| | - Lei Zhan
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China.
| | - Min Gong
- Department of Pathology, Institute of Surgery Research, Daping Hospital, Chongqing, 400042, P.R.China
| | - Shu Jun Zhen
- Chongqing Key Laboratory of Biomedical Analysis (Southwest University), Chongqing Science & Technology Commission, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R.China.
| | - Cheng Zhi Huang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China.
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24
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Enhanced conductivity of rGO/Ag NPs composites for electrochemical immunoassay of prostate-specific antigen. Biosens Bioelectron 2017; 87:466-472. [DOI: 10.1016/j.bios.2016.08.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 07/25/2016] [Accepted: 08/02/2016] [Indexed: 01/05/2023]
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25
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SHI L, WANG Z, YANG G, CHEN X, GOU G, LIU W. Electrochemical Immunosensor for Aflatoxin B 1 Based on Polyaniline/Graphene Nanohybrids Decorated with Au Nanoparticle. ELECTROCHEMISTRY 2017. [DOI: 10.5796/electrochemistry.85.384] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Ling SHI
- School of Science, Honghe University
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province
| | - Zefeng WANG
- School of Science, Honghe University
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province
| | - Guangming YANG
- School of Science, Honghe University
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province
| | - Xianlan CHEN
- School of Science, Honghe University
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province
| | - Gaozhang GOU
- School of Science, Honghe University
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province
| | - Wei LIU
- School of Science, Honghe University
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province
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26
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Nanocomposites of graphene and graphene oxides: Synthesis, molecular functionalization and application in electrochemical sensors and biosensors. A review. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-2007-0] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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