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Gandouzi I, Tertis M, Cernat A, Bakhrouf A, Coros M, Pruneanu S, Cristea C. Sensitive detection of pyoverdine with an electrochemical sensor based on electrochemically generated graphene functionalized with gold nanoparticles. Bioelectrochemistry 2018; 120:94-103. [DOI: 10.1016/j.bioelechem.2017.11.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 11/27/2017] [Accepted: 11/27/2017] [Indexed: 12/31/2022]
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Song D, Qu X, Liu Y, Li L, Yin D, Li J, Xu K, Xie R, Zhai Y, Zhang H, Bao H, Zhao C, Wang J, Song X, Song W. A Rapid Detection Method of Brucella with Quantum Dots and Magnetic Beads Conjugated with Different Polyclonal Antibodies. NANOSCALE RESEARCH LETTERS 2017; 12:179. [PMID: 28282974 PMCID: PMC5344867 DOI: 10.1186/s11671-017-1941-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/21/2017] [Indexed: 05/14/2023]
Abstract
Brucella spp. are facultative intracellular bacteria that cause zoonotic disease of brucellosis worldwide. Traditional methods for detection of Brucella spp. take 48-72 h that does not meet the need of rapid detection. Herein, a new rapid detection method of Brucella was developed based on polyclonal antibody-conjugating quantum dots and antibody-modified magnetic beads. First, polyclonal antibodies IgG and IgY were prepared and then the antibody conjugated with quantum dots (QDs) and immunomagnetic beads (IMB), respectively, which were activated by N-(3-dimethylaminopropyl)-N'-ethylcar-bodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) to form probes. We used the IMB probe to separate the Brucella and labeled by the QD probe, and then detected the fluorescence intensity with a fluorescence spectrometer. The detection method takes 105 min with a limit of detection of 103 CFU/mL and ranges from 10 to 105 CFU/mL (R 2 = 0.9983), and it can be well used in real samples.
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Affiliation(s)
- Dandan Song
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Xiaofeng Qu
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Yushen Liu
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Li Li
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Dehui Yin
- School of Public Health, Xuzhou Medical University, 221000 Xuzhou, China
| | - Juan Li
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Kun Xu
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Renguo Xie
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 130000 Changchun, China
| | - Yue Zhai
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Huiwen Zhang
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Hao Bao
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Chao Zhao
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Juan Wang
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Xiuling Song
- Department of Health Laboratory, School of Public Health, Jilin University, 130021 Changchun, China
| | - Wenzhi Song
- China-Japan Union Hospital, Jilin University, 130000 Changchun, China
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Magro M, Fasolato L, Bonaiuto E, Andreani NA, Baratella D, Corraducci V, Miotto G, Cardazzo B, Vianello F. Enlightening mineral iron sensing in Pseudomonas fluorescens by surface active maghemite nanoparticles: Involvement of the OprF porin. Biochim Biophys Acta Gen Subj 2016; 1860:2202-10. [DOI: 10.1016/j.bbagen.2016.05.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 04/18/2016] [Accepted: 05/03/2016] [Indexed: 01/05/2023]
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Yagati AK, Pyun JC, Min J, Cho S. Label-free and direct detection of C-reactive protein using reduced graphene oxide-nanoparticle hybrid impedimetric sensor. Bioelectrochemistry 2016; 107:37-44. [DOI: 10.1016/j.bioelechem.2015.10.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 09/18/2015] [Accepted: 10/04/2015] [Indexed: 11/28/2022]
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Mu X, Tong Z, Huang Q, Liu B, Liu Z, Hao L, Zhang J, Gao C, Wang F. Nano-magnetic immunosensor based on staphylococcus protein a and the amplification effect of HRP-conjugated phage antibody. SENSORS 2015; 15:3896-910. [PMID: 25671509 PMCID: PMC4367391 DOI: 10.3390/s150203896] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 02/02/2015] [Indexed: 12/17/2022]
Abstract
In this research, super-paramagnetic Fe3O4 nanoparticles (magnetic particles) were coated with Staphylococcus protein A (SPA) and coupled with polyclonal antibody (pcAb) to construct magnetic capturing probes, and HRP-conjugated phage antibody was then used as specific detecting probe to design a labeled immunosensor for trace detection of Staphylococcus aureus enterotoxin B (SEB). The linear detection range of the sensor was 0.008~125 µg/L, the regression equation was Y = 0.487X + 1.2 (R = 0.996, N = 15, p < 0.0001), the limit of detection (LOD) was 0.008 µg/L, and the limit of quantification (LOQ) was 0.008 µg/L. HRP-conjugated phage antibody, SPA and magnetic particles can enhance the sensitivity 4-fold, 3-fold and 2.6-fold higher, respectively. Compared with conventional double-antibody sandwich ELISA, the detection sensitivity of the sensor was 31-fold higher resulting from the integrated amplifying effect. The immunosensor integrates the unique advantages of SPA-oriented antibody as magnetic capturing probe, HRP-conjugated phage antibody as detecting probe, magnetic separation immunoassay technique, and several other advanced techniques, so it achieves high sensitivity, specificity and interference-resistance. It is proven to be well suited for analysis of trace SEB in various environmental samples with high recovery rate and reproducibility.
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Affiliation(s)
- Xihui Mu
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Zhaoyang Tong
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Qibin Huang
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Bing Liu
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Zhiwei Liu
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Lanqun Hao
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Jinping Zhang
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Chuan Gao
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
| | - Fenwei Wang
- Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
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