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Development of sensitive and portable immunosensors based on signal amplification probes for monitoring the mercury(II) ions. Biosens Bioelectron 2022; 217:114676. [PMID: 36126556 DOI: 10.1016/j.bios.2022.114676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/18/2022] [Accepted: 08/28/2022] [Indexed: 11/02/2022]
Abstract
Mercury ion (Hg2+) as a major environmental pollutant threatens human health even at very low concentrations, so it is essential to monitor mercury residues in food. In this study, Hg2+ was conjugated with protein carrier using 1-(4-Isothiocyanobenzyl) ethylenediamine N, N, N', N'-tetraacetic acid (ITCBE) as a bifunctional chelator. 7A1 monoclonal antibody (mAb) against Hg2+-ITCBE with high affinity (7.3 × 109 L/moL) and good specificity was obtained by cell fusion technology and performed to establish immunosensors. Immunochromatographic test strip using colloidal gold nanoparticles (AuNP with an average diameter of 18 nm) as signal reporter showed low sensitivity. Signal amplification probes including larger multi-branched gold nanoflowers (AuNF) and latex microspheres (LM) were employed to enhance the sensitivity of immunosensors. The visible limit of detection (vLOD) of the AuNF- and LM-based strip were determined to be 50 ng/mL and 25 ng/mL respectively, showing more sensitive than that of AuNP-based strip (200 ng/mL). Quantitative analysis showed that AuNF-based strip exhibited lower quantitative limit of detection (qLOD) (0.44 ng/mL) which was 20-fold lower than that of AuNP-based strip (8.92 ng/mL) for determination of Hg2+, and LM-based strip (0.49 ng/mL) was 18 times as sensitive as AuNP-based strip. In summary, the developed immunosensors using AuNF and LM as signal amplification probes exhibited excellent sensitivity and provided portable, on-site detection for Hg2+.
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Wang X, Wang Y, Wang S, Hou J, Cai L, Fan G. Indirect Competitive ELISA for the Determination of Total Chromium Content in Food, Feed and Environmental Samples. Molecules 2022; 27:molecules27051585. [PMID: 35268684 PMCID: PMC8911876 DOI: 10.3390/molecules27051585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 02/04/2023] Open
Abstract
Background: This study aimed to prepare monoclonal antibodies (mAbs) with high immunoreactivity, sensitivity, and specificity for the chelate (Cr(III)-EDTA) of trivalent chromium ion (Cr(III)) and ethylenediamine tetraacetic acid (EDTA). Further, the study established an indirect competitive enzyme-linked immunosorbent assay (icELISA) for detecting the total chromium content in food, feed, and environmental samples. Methods: Hapten Cr(III)-iEDTA was synthesized by chelating Cr(III) with isothiocyanatebenzyl-EDTA (iEDTA). Immunogen Cr(III)-iEDTA-BSA formed by chelating Cr(III)-iEDTA with bovine serum albumin (BSA), and coating antigen Cr(III)-iEDTA-OVA formed by chelating Cr(III)-iEDTA with ovalbumin (OVA) were prepared using the isothiocyanate method and identified by ultraviolet spectra (UV) and inductively coupled plasma optical emission spectrometry (ICP-OES). Balb/c mice were immunized with the Cr(III)-iEDTA-BSA, and the anti Cr(III)-EDTA mAb cell lines were screened by cell fusion. The Cr(III)-EDTA mAbs were prepared by induced ascites in vivo, and their immunological characteristics were assessed. Results: The immunogen Cr(III)-iEDTA-BSA was successfully synthesized, and the molecular binding ratio of Cr(III) to BSA was 15.48:1. Three hybridoma cell lines 2A3, 2A11, and 3D9 were screened, among which 2A3 was the best cell line. The 2A3 secreted antibody was stable after six passages, the affinity constant (Ka) was 2.69 × 109 L/mol, its 50% inhibition concentration (IC50) of Cr(III)-EDTA was 8.64 μg/L, and it had no cross-reactivity (CR%) with other heavy metal ion chelates except for a slight CR with Fe(III)-EDTA (1.12%). An icELISA detection method for Cr(III)-EDTA was established, with a limit of detection (LOD) of 1.0 μg/L and a working range of 1.13 to 66.30 μg/L. The average spiked recovery intra-assay rates were 90% to 109.5%, while the average recovery inter-assay rates were 90.4% to 97.2%. The intra-and inter-assay coefficient of variations (CVs) were 11.5% to 12.6% and 11.1% to 12.7%, respectively. The preliminary application of the icELISA and the comparison with ICP-OES showed that the coincidence rate of the two methods was 100%, and the correlation coefficient was 0.987. Conclusions: The study successfully established an icELISA method that meets the requirements for detecting the Cr(III)-EDTA chelate content in food, feed, and environmental samples, based on Cr(III)-EDTA mAb, and carried out its preliminary practical application.
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Affiliation(s)
- Xiaofei Wang
- Xinxiang Institute of Engineering, College of Bioengineering, Xinxiang 453700, China; (X.W.); (S.W.)
| | - Yanan Wang
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
| | - Shuyun Wang
- Xinxiang Institute of Engineering, College of Bioengineering, Xinxiang 453700, China; (X.W.); (S.W.)
| | - Jie Hou
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
| | - Linlin Cai
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
| | - Guoying Fan
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
- Correspondence: ; Tel.: +86-158-3736-8615
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Ling S, Zhao Q, Iqbal MN, Dong M, Li X, Lin M, Wang R, Lei F, He C, Wang S. Development of immunoassay methods based on monoclonal antibody and its application in the determination of cadmium ion. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:124992. [PMID: 33454572 DOI: 10.1016/j.jhazmat.2020.124992] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/14/2020] [Accepted: 12/27/2020] [Indexed: 05/24/2023]
Abstract
Owing to the threat of cadmium (Cd2+) to public health, it is an urgent demand to develop effective, sensitive, and rapid methods for the detection of cadmium. In this study, indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and immunochromatographic test strips (ICTS) were established for the determination of Cd2+ based on the obtained mAb with high specificity and high affinity (Kaff = 3.0 × 109 L/moL). The linear range of ic-ELISA detection was 0.03-1.11 ng/mL and 50% inhibitive concentration (IC50) of cadmium ion was determined to be 0.15 ng/mL. The visual limit of detection (vLOD) of the AuNS-based strip was 0.375 ng/mL. The vLOD of AuNF-based strip using higher intensity reporter determined to be 0.03 ng/mL, which was enhanced 12 times compared to the traditional strip. In summary, the developed immunoassays based on mAb shows great potential for monitoring the cadmium ion in environmental samples.
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Affiliation(s)
- Sumei Ling
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qiang Zhao
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Muhammad Naeem Iqbal
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mingke Dong
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiulan Li
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ming Lin
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Rongzhi Wang
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Feiya Lei
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Caizhen He
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shihua Wang
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Guo Y, Li D, Zheng S, Xu N, Deng W. Utilizing Ag-Au core-satellite structures for colorimetric and surface-enhanced Raman scattering dual-sensing of Cu (II). Biosens Bioelectron 2020; 159:112192. [PMID: 32291247 DOI: 10.1016/j.bios.2020.112192] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/30/2020] [Accepted: 04/03/2020] [Indexed: 12/21/2022]
Abstract
This study develops a dual-channel colorimetric and surface-enhanced Raman scattering (SERS) strategy for detection of Cu2+ utilizing Ag-Au core-satellite nanostructures. 4-mercaptobenzoic acid (MBA) modified Ag nanoparticles (AgNPs@MBA) and 4-mercaptopyridine (Mpy) capped AuNPs (GNPs@Mpy) are first designed via metal-sulfur bonds, respectively. Benefiting from the Cu2+-triggered NPs self-aggregation, the dispersion of AgNPs-GNPs (AgNPs@MBA + GNPs@Mpy) is turned into AgNPs-Cu2+-GNPs core-satellite structures. Because of the presence of pyridyl nitrogen and carboxy group which have specific coordination ability towards Cu2+, induces a certain aggregation of NPs. As well it can be obviously discerned by the visual assay and easily captured by SERS analysis. The UV-Vis method exhibits good linearity in the ranging from 0.1 μM-200 μM for Cu2+, while SERS method displays good linear response from 1 pM to 100 μM. The detection limit of Cu2+ is 0.032 μM by colorimetry and 0.6 pM by SERS method, which is significantly lower than the acceptable limit of Cu2+ in drinking water (20 μM) set by the US EPA. Furthermore, colorimetric and SERS assay based on AgNPs-Cu2+-GNPs core-satellite structures is used to determine Cu2+ in various waters and soils, and the detection results are consistent with the traditional atomic analysis methods. This work offers a new method for detecting Cu2+ in environmental samples, and the plasmonic nanostructure provides new entry point for development of multiplexed sensing platform for in-field application.
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Affiliation(s)
- Yanyan Guo
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, PR China
| | - Dan Li
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, PR China.
| | - Siqing Zheng
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, PR China
| | - Niwei Xu
- Hunan Taradit Onal Chinese Medical College, 136 Lusong Road, Zhuzhou, Hunan, 412012, PR China
| | - Wei Deng
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, PR China
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Zhu X, Miao X, Qin X, Zhu X. Design of immunogens: The effect of bifunctional chelator on immunological response to chelated copper. J Pharm Biomed Anal 2019; 174:263-269. [PMID: 31181489 DOI: 10.1016/j.jpba.2019.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 05/30/2019] [Accepted: 06/01/2019] [Indexed: 01/03/2023]
Abstract
To produce specific antibodies for the detection and quantification of copper ions, bifunctional chelators (BFCs) are commonly applied in the preparation of copper conjugates. However, some copper-chelator complexes exhibit limited stability under in vivo conditions. In this study, Cu2+ was coupled with carrier proteins via three different macrocyclic BFCs: p-SCN-Bn-DOTA, p-SCN-Bn-NOTA, and p-SCN-Bn-TETA. The stability in plasma and the immunogenicity of three copper immunoconjugates were compared. The chelators other than p-SCN-Bn-DOTA were very stable in plasma, with <9% dissociation of Cu2+ over 96 h. The immune response varied depending on the choice of chelator; notably, antisera from the Cu2+-NOTA-KLH conjugate demonstrated the best reactivity toward chelated Cu2+. p-SCN-Bn-NOTA, which showed significant advantages over the other chelators, was used for antibody production. The efficiency of immune-positive hybridoma production was satisfactory, and the resultant monoclonal antibodies (McAbs) 4B7 showed sensitivity (half-maximal inhibitory concentration (IC50) of 8.9 ng/mL) to chelated Cu2+, with a working range from 1.21 to 48.9 ng/mL. The recovery of Cu2+ from water samples was 85.7-108%, and the intra- and inter-assay coefficients of variation were 4.0-10.1% and 7.1-11.4%, respectively. Compared with previously reported McAb specific to Cu2+, DF4, the sensitivity of the newly developed assay was improved 100-fold. The results of this study indicate the utility of NOTA for the efficient generation of highly sensitive McAbs against Cu2+.
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Affiliation(s)
- Xiaoxia Zhu
- School of Public Health, Nantong University, No.9 Seyuan Road Nantong, Jiangsu, 226019, China.
| | - Xiaye Miao
- School of Public Health, Nantong University, No.9 Seyuan Road Nantong, Jiangsu, 226019, China
| | - Xinyue Qin
- School of Public Health, Nantong University, No.9 Seyuan Road Nantong, Jiangsu, 226019, China
| | - Xiaohong Zhu
- Department of Infectious Disease, Division 2nd, the Third People's Hospital of Nantong, Jiangsu, 226006, China.
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6
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Analyte-triggered cyclic autocatalytic oxidation amplification combined with an upconversion nanoparticle probe for fluorometric detection of copper(II). Mikrochim Acta 2018; 185:484. [PMID: 30276757 DOI: 10.1007/s00604-018-3015-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 09/20/2018] [Indexed: 02/04/2023]
Abstract
The authors describe an upconversion nanoparticle-based (UCNP-based) fluorometric method for ultrasensitive and selective detection of Cu2+. The UCNPs show a strong emission band at 550 nm under near-infrared excitation at 980 nm. The principle of the strategy is that gold nanoparticles (AuNP) can quench the fluorescence of UCNP. In contrast, the addition of L-cysteine (Cys) can induce the aggregation of AuNP, resulting in a fluorescence recovery of the UCNPs. On addition of Cu2+, it oxidizes Cys to cystine and is reduced to Cu+. The Cu+ thusformed can be oxidized cyclically to Cu2+ by dissolved O2, which catalyzes and recycles the whole reaction. Thus, the aggregation of AuNP is inhibited and the fluorescence recovered by Cys is quenched. Under the optimal condition, the quenching efficiency shows a good linear response to the concentrations of Cu2+ in the 0.4-40 nM range. The limit of detection is 0.16 nM, which is 5 orders of magnitude lower than the U.S. Environmental Protection Agency limit for Cu2+ in drinking water (20 μM). The method has been further applied to monitor Cu2+ levels in real samples. The results of detection are well consistent with those obtained by atomic absorption spectroscopy. Graphical abstract Gold nanoparticles (AuNP) as a high efficient fluorescence quenching reagent of upconversion nanoparticles (UCNP) were used in a fluorometric method for detection of Cu2+ based on a cyclic catalytic oxidation amplification strategy.
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Wang Y, Su Z, Wang L, Dong J, Xue J, Yu J, Wang Y, Hua X, Wang M, Zhang C, Liu F. SERS Assay for Copper(II) Ions Based on Dual Hot-Spot Model Coupling with MarR Protein: New Cu2+-Specific Biorecognition Element. Anal Chem 2017; 89:6392-6398. [DOI: 10.1021/acs.analchem.6b05106] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yulong Wang
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Zhenhe Su
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Limin Wang
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Jinbo Dong
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Juanjuan Xue
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Jiao Yu
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Yuan Wang
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Xiude Hua
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Minghua Wang
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
| | - Cunzheng Zhang
- Institute
of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, 210014, P.R.China
| | - Fengquan Liu
- College
of Plant Protection (Key Laboratory of Integrated Management of Crop
Diseases and Pests), Nanjing Agricultural University, Nanjing, 210095, P.R.China
- Institute
of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, 210014, P.R.China
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Niu Y, Wang J, Zhang C, Chen Y. Rapid determination of trace copper in animal feed based on micro-plate colorimetric reaction and statistical partitioning correction. Food Chem 2017; 221:1406-1414. [DOI: 10.1016/j.foodchem.2016.11.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 10/27/2016] [Accepted: 11/02/2016] [Indexed: 12/11/2022]
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CORENO-ALONSO A, CRUZ-JIMENEZ G, LÓPEZ-MARTINEZ L, REYNA-LÓPEZ GE, ACEVEDO-AGUILAR FJ. A rapid, eco-friendly, and reliable microplate method for determination of Cr(VI). Turk J Chem 2017. [DOI: 10.3906/kim-1609-53] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Ouyang H, Shu Q, Wang W, Wang Z, Yang S, Wang L, Fu Z. An ultra-facile and label-free immunoassay strategy for detection of copper (II) utilizing chemiluminescence self-enhancement of Cu (II)-ethylenediaminetetraacetate chelate. Biosens Bioelectron 2016; 85:157-163. [DOI: 10.1016/j.bios.2016.05.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/27/2016] [Accepted: 05/02/2016] [Indexed: 11/30/2022]
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Yu Y, Yu C, Yin T, Ou S, Sun X, Wen X, Zhang L, Tang D, Yin X. Functionalized poly (ionic liquid) as the support to construct a ratiometric electrochemical biosensor for the selective determination of copper ions in AD rats. Biosens Bioelectron 2016; 87:278-284. [PMID: 27567254 DOI: 10.1016/j.bios.2016.08.066] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 08/11/2016] [Accepted: 08/19/2016] [Indexed: 01/18/2023]
Abstract
An efficient ratiometric electrochemical biosensor for Cu2+ determination was constructed using dual hydroxyl-functionalized poly (ionic liquid) (DHF-PIL) as the catalyst support. The DHF-PIL exhibited typical macroporous structure, which provided a high surface area of 39.31m2/g for the sufficient loading of biomolecules. The specific recognition of Cu2+ was accomplished by employing neurokinin B (NKB) for the first time, which could bind to Cu2+ to form a [CuII(NKB)2] complex with high specificity. Meanwhile, a common redox mediator, 2, 2'-Azinobis-(3-ethylbenzthiazoline-6-sulfonate) (ABTS) was modified into DHF-PIL by electrostatic interactions to act as an inner reference molecule, which provided a built-in correction for environmental effects and improving the detection accuracy. With this strategy, the developed electrochemical biosensor was capable of determining Cu2+ with a linear range between 0.9 and 36.1μM and low detection limit (LOD) and quantification limit (LOQ) of 0.24 and 0.6μM, respectively. The sensor also displayed a satisfactory selectivity against a series of interferences in the brain, including metal ions, amino acids and other endogenous compounds. Accordingly, the present biosensor was successfully applied to evaluate Cu2+ levels in normal and AD rats.
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Affiliation(s)
- Yanyan Yu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, PR China
| | - Chao Yu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, PR China
| | - Tianxiao Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, PR China
| | - Shanshan Ou
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, PR China
| | - Xiaoyu Sun
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, PR China
| | - Xiangru Wen
- College of Biomedical Sciences, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, PR China
| | - Lin Zhang
- Jiangsu Vcare Pharmatech Company, 15 Wanshou Road, Nanjing, Jiangsu 210000, PR China
| | - Daoquan Tang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, PR China.
| | - Xiaoxing Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, PR China.
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Wang Y, Wang L, Wang S, Yang M, Cai J, Liu F. ‘Green’ immunochromatographic electrochemical biosensor for mercury(II). Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1866-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Quantitative Determination of Butocarboxim in Agricultural Products Based on Biotinylated Monoclonal Antibody. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-0012-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Jiang R, Xu C, Zhou X, Wang T, Yao G. Detection of cystatin C biomarker for clinical measurement of renal disease by developed ELISA diagnostic kits. J Transl Med 2014; 12:205. [PMID: 25216761 PMCID: PMC4262383 DOI: 10.1186/1479-5876-12-205] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Accepted: 06/07/2014] [Indexed: 01/31/2023] Open
Abstract
Background Human cystatin C (HCC) is a potential biomarker for tubular damage and impaired renal function. It is difficult to obtain efficient paired monoclonal antibodies against HCC with low molecular to meet the requirements for clinical application The present study was to establish a stable and repeatable measurement for HCC with self-made monoclonal antibodies (McAbs) and Variable domain of heavy chain of heavy-chain antibody (VHHs) increase the sensitivity. Methods With hybridoma technology and phage display technology: R-HCC as a screening antigen and N-HCC as the detector for antigens to obtain the specific antibody and established an enzyme-linked immunosorbent assay for human cystatin C using self-made McAbs and VHHs. Results We have successfully obtained three McAbs; 5 F2, 4E4, 1E11 and four VHHs; 3-2, 3-24, 3-33 and 4-5 which were specific for HCC. The measurement of HCC was established with the self-made monoclonal antibodies and VHHs with a high sensitivity the lower limit of detection at 0.5 ng/ml and the detection range at 0.5 ~ 31.3 ng/ml. Conclusion Our data provides a new approach for paired antibody screening and testing of the small molecular biomarker with a single dominant epitope, with the important biological and clinical significance.
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Affiliation(s)
| | | | | | - Tianhao Wang
- Key Laboratory for Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
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15
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Xing C, Hao C, Liu L, Xu C, Kuang H. A highly sensitive enzyme-linked immunosorbent assay for copper(II) determination in drinking water. FOOD AGR IMMUNOL 2013. [DOI: 10.1080/09540105.2013.821600] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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