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Zhu Y, Deng X, Chen J, Hu Z, Wu F. Coffee grounds-derived carbon quantum dots as peroxidase mimetics for colorimetric and fluorometric detection of ascorbic acid. Food Chem 2023; 429:136957. [PMID: 37499505 DOI: 10.1016/j.foodchem.2023.136957] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023]
Abstract
In this study, we reported the eco-responsible synthesis of iron-doped carbon quantum dots (Fe-CQDs) from waste coffee grounds through a simple hydrothermal method. The Fe-CQDs exhibited high peroxidase-like activity, which could convert 3,3',5,5'-tetramethylbenzidine (TMB) into blue ox-TMB in the presence of H2O2. After adding ascorbic acid (AA) to above system, the blue solution faded. Based on this phenomenon, a colorimetric method for visual monitoring of H2O2 and AA was developed. Meanwhile, the fluorescence of Fe-CQDs can be quenched by the formed ox-TMB via inner filter effect (IFE), followed by the recovery upon the addition of AA. Therefore, Fe-CQDs can be acted as a fluorescent probe to detect H2O2 and AA through the "on-off-on" mode. Furthermore, the dual-recognition methods based on Fe-CQDs were used to measure AA content in beverage samples. Thus, this work would shed much light on converting waste into biomass CQDs and their potential applications in biomolecular detection.
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Affiliation(s)
- Yuyan Zhu
- Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Xiang Deng
- Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Jiaming Chen
- Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Zhiyuan Hu
- Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China; National Center for Nanoscience and Technology, Beijing 100190, PR China
| | - Fengshou Wu
- Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China.
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2
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Zhou X, Bai D, Yu H, Fu Y, Song L, Wu Y, Chen K, Li J, Yang Y, Chen H, Wang Z, Xie G. Detection of rare CTCs by electrochemical biosensor built on quaternary PdPtCuRu nanospheres with mesoporous architectures. Talanta 2023; 253:123955. [PMID: 36179559 DOI: 10.1016/j.talanta.2022.123955] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/08/2022] [Accepted: 09/18/2022] [Indexed: 12/13/2022]
Abstract
Circulating tumor cells (CTCs) are promising liquid biopsy biomarkers for early cancer detection and anti-cancer therapy evaluation. The ultra-low abundance of CTCs in blood samples requires highly sensitive and accurate detection ways. In this study, we propose the design of a dual-recognition electrochemical biosensor to improve both the specificity and signal response. PdPtCuRu mesoporous nanospheres (PdPtCuRu MNSs) with excellent three dimensions (3D) nanopore structures were synthesized by one-pot method and connected to mucin 1 (MUC1) aptamer to serve as signal amplification probe. Besides, superconductive carbon black, Ketjen Black (KB), and gold nanoparticles (AuNPs) modified organometallic frame (CeMOF-Au) were combined to work as signal transducer. The characteristic branching structure of KB provides abundant contact points to load CeMOF-Au to heighten the interface electron transfer rate. In addition, AuNPs were reduced on the surface of CeMOF, which could effectively bind the capture antibody and further enhance the conductivity. Under the optimized condition, the limit of detection (LOD) of the as-constructed biosensor was less than 10 cells mL-1 for model A549 cells, and showed good specificity and accuracy in spiked serum samples. We envision the as-proposed electrochemical biosensor would alternate as a useful tool for the clinical detection of CTCs for cancer diagnosis.
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Affiliation(s)
- Xi Zhou
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Dan Bai
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Hongyan Yu
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Yixin Fu
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Lin Song
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - You Wu
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Kena Chen
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Junjie Li
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Yujun Yang
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Huajian Chen
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China; Chongqing Emergency Medical Center, Chongqing University Central Hospital, School of Medicine, Chongqing University, Chongqing, China
| | - Zhongzhong Wang
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China
| | - Guoming Xie
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical Laboratory Microfluidics and SPRi Engineering Research Center, Chongqing Medical University, Chongqing, China.
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3
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Cheng X, Wang CC, Liu A, Liu Y, Dong J, Wang Z, Wei W, Liu S. Simultaneous detection of foodborne pathogenic bacteria in milk by fluorescence immunoassay. Spectrochim Acta A Mol Biomol Spectrosc 2023; 285:121830. [PMID: 36179567 DOI: 10.1016/j.saa.2022.121830] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/10/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
Rapid, sensitive and simultaneous detection of multiple bacteria in foodborne is still a major challenge in public health field. Here, a fluorescence immunoassay that can achieve high-throughput detection of three Gram-positive foodborne pathogenic bacteria simultaneously was proposed. Vancomycin and bovine serum albumin conjugate (Van-BSA) was immobilized on a polycarbonate chip to capture three Gram-positive foodborne pathogenic bacteria, Staphylococcus aureus (S. aureus), Bacillus cereus (B. cereus) and Listeria monocytogenes (L. monocytogenes). CdSe/ZnS quantum dot modified antibodies (Ab-QD) were prepared by carbodiimide coupling chemistry. Due to the affinity reaction between antibodies and proteins on the bacterial surface, the simultaneous detection of multiple Gram-positive bacteria was achieved by monitoring the fluorescence signal of quantum dot by a portable microfluidic chip analyzer. Under optimal conditions, low detection limits was 18 CFU/well, 3 CFU/well and 36 CFU/well for S. aureus, B. cereus and L. monocytogenes, respectively. With satisfactory accuracy and precision, the proposed fluorescence immunoassay holds good prospects to detect pathogens in real food samples.
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Affiliation(s)
- Xiao Cheng
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, State Key Laboratory of Bioelectronics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Chen Chen Wang
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, State Key Laboratory of Bioelectronics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Anran Liu
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, State Key Laboratory of Bioelectronics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yu Liu
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, State Key Laboratory of Bioelectronics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Jingjiao Dong
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, State Key Laboratory of Bioelectronics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Zhi Wang
- Wuxi Institute of Inspection, Testing and Certification, Wuxi 214125, China
| | - Wei Wei
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, State Key Laboratory of Bioelectronics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Songqin Liu
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, State Key Laboratory of Bioelectronics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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Shen Y, Gao X, Zhang Y, Chen H, Ye Y, Wu Y. Polydopamine-based nanozyme with dual-recognition strategy-driven fluorescence-colorimetric dual-mode platform for Listeria monocytogenes detection. J Hazard Mater 2022; 439:129582. [PMID: 35863223 DOI: 10.1016/j.jhazmat.2022.129582] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/03/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
Development of a simple and efficient dual-mode analytical technique with the built-in cross reference correction feature is benefit to achieve the highly accurate detection of the target pollutants and avoid the false-positive outputs in environmental media. Here, we synthesized a Fe-doped polydopamine (Fe@PDA)-based nanozyme with prominent peroxide-mimetic enzyme activity and high fluorescence emission ability. On this basis, we designed a dual-recognition strategy-driven fluorescence-colorimetric dual-mode detection platform, consisting of Listeria monocytogenes (L. monocytogenes) recognition aptamer-modified Fe@PDA (apt/Fe@PDA) and vancomycin-functionalized Fe3O4 (van/Fe3O4), for L. monocytogenes. Owing to van/Fe3O4-powered magnetic separation, there was a L. monocytogenes concentration-dependent fluorescence enhancement of apt/Fe@PDA for performing fluorescence assay in the precipitate. In this case, the prominent peroxide-mimetic enzyme activity of the residual apt/Fe@PDA in the precipitation could catalyze H2O2 to further oxidate colorless 3,3',5,5'-tetramethylbenzidine (TMB) into blue oxTMB, which displayed a L. monocytogenes concentration-dependent absorbance enhancement for carrying out colorimetric assay as well. As a result, a fluorescence-colorimetric dual-mode analytical platform was proposed to successfully detect the residual L. monocytogenes in real environmental media with acceptable results. This work showed the great prospects by integrating dual-recognition strategy into fluorescence nanozyme to develop efficient and reliable dual-mode analytical platforms for safeguarding environmental health.
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Affiliation(s)
- Yizhong Shen
- School of Food & Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China.
| | - Xiang Gao
- School of Food & Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China
| | - Yiyin Zhang
- School of Food & Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China
| | - Huanhuan Chen
- School of Food & Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China
| | - Yingwang Ye
- School of Food & Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China.
| | - Yongning Wu
- Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014), NHC Key Lab of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment (CFSA), Beijing 100022, China.
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Cheng S, Tu Z, Zheng S, Cheng X, Han H, Wang C, Xiao R, Gu B. An efficient SERS platform for the ultrasensitive detection of Staphylococcus aureus and Listeria monocytogenes via wheat germ agglutinin-modified magnetic SERS substrate and streptavidin/aptamer co-functionalized SERS tags. Anal Chim Acta 2021; 1187:339155. [PMID: 34753577 DOI: 10.1016/j.aca.2021.339155] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/04/2021] [Indexed: 12/13/2022]
Abstract
A novel surface-enhanced Raman scattering (SERS)-based analytical technique was proposed to simultaneously detect two highly pathogenic bacteria, namely, Staphylococcus aureus (S. aureus) and Listeria monocytogenes (L. mono) by using a dual-recognition pattern with wheat germ agglutinin (WGA) and nucleic acid aptamers. WGA was modified onto Fe3O4@Au magnetic nanoparticles (MNPs) for the efficient capture of S. aureus and L. mono in complex samples (orange juice, extracts of lettuce, and human urine) within 15 min. The streptavidin (SA)/aptamers co-functionalized SERS tags were fabricated by covalent attaching two different Raman reporters and SA molecules onto 45 nm Au NPs and then conjugated with two biotin-aptamers that specifically bind to their target bacteria with high affinity and stability. The combined use of high-sensitive SERS tags, WGA-mediated magnetic enrichment, and SA-mediated aptamer conjugation remarkably improved the assay sensitivity. Under optimized conditions, the developed SERS biosensor can simultaneously detect the two target bacteria with high detection sensitivity (<6 cells/mL), favorable linear relation (10-107 cells/mL), and high accuracy (recovery rate <7.03%). Therefore, the proposed SERS platform is rapid, sensitive, easy to use, and thus show potential as a tool for the timely identification of pathogenic bacteria in real samples.
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Affiliation(s)
- Siyun Cheng
- Medical Technology School of Xuzhou Medical University, Xuzhou, 221004, PR China; Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Zhijie Tu
- Medical Technology School of Xuzhou Medical University, Xuzhou, 221004, PR China; Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Shuai Zheng
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China; College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China
| | - Xiaodan Cheng
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China; College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China
| | - Han Han
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Chongwen Wang
- Medical Technology School of Xuzhou Medical University, Xuzhou, 221004, PR China; Beijing Institute of Radiation Medicine, Beijing, 100850, PR China; College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China.
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China.
| | - Bing Gu
- Medical Technology School of Xuzhou Medical University, Xuzhou, 221004, PR China; Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510000, PR China.
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Zhu W, Zhou Y, Liu S, Luo M, Du J, Fan J, Xiong H, Peng H. A novel magnetic fluorescent molecularly imprinted sensor for highly selective and sensitive detection of 4-nitrophenol in food samples through a dual-recognition mechanism. Food Chem 2021; 348:129126. [PMID: 33515947 DOI: 10.1016/j.foodchem.2021.129126] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
In this study, surface imprinting, magnetic separation, and fluorescent detection were integrated to develop a dual-recognition sensor (MF-MIPs), which was used for highly selective and sensitive detection of 4-nitrophenol (4-NP) in food samples. Silane-functionalized carbon dots (Si-CDs) participated in the imprinting process and were uniformly distributed into the MIPs layers. MF-MIPs sensor exhibited a high fluorescence response and selectivity based on the dual-recognition mechanism of imprinting recognition and fluorescence identification. The relative fluorescence intensity of MF-MIPs sensor presented a good linear relationship in the range of 0.08-10 μmol·L-1 with a low limit of detection (23.45 nmol·L1) for 4NP. MF-MIPs sensor showed high anti-interference, as well as excellent stability and reusability. The 4-NP recovery from spiked food samples ranged from 93.20 to 102.15%, and the relative standard deviation was lower than 5.0%. Therefore, MF-MIPs sensor may be a promising method for 4-NP detection in food samples.
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Affiliation(s)
- Wenting Zhu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Yushun Zhou
- School of Resources, Environmental, and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Shuai Liu
- School of Resources, Environmental, and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Mei Luo
- School of Resources, Environmental, and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jun Du
- School of Resources, Environmental, and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jieping Fan
- School of Resources, Environmental, and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Hua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Hailong Peng
- School of Resources, Environmental, and Chemical Engineering, Nanchang University, Nanchang 330031, China.
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Chai R, Wang Y, Kan X. Sensitive and selective detection of glycoprotein based on dual-signal and dual-recognition electrochemical sensing platform. Food Chem 2020; 340:127944. [PMID: 32889217 DOI: 10.1016/j.foodchem.2020.127944] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 08/18/2020] [Accepted: 08/24/2020] [Indexed: 12/21/2022]
Abstract
Glycoproteins play extraordinary roles in biology and clinic. The specifically sensitive detection of glycoproteins by electrochemical methods is still a challenging task due to their poor electro-activity and sensitive nature to environment. In this work, ovalbumin (OVA), a model glycoprotein, was sensitively detected by a molecularly imprinted polymer (MIP) based electrochemical sensor, which was prepared by electropolymerizing 3-thiophene boric acid in the presence of OVA. Due to boronate affinity, the rebound OVA interacted with ferrocene boric acid (Fc-BA) to construct a sandwich structural sensing platform. Dual-recognition elements, imprinted effect and the boronate affinity, enabled the sensor to recognize OVA from other proteins. The rebinding of OVA caused the current changes of thionine and Fc-BA, which were combined as a dual-signal for OVA sensitive detection with a low limit of detection of 0.82 pg/mL (S/N = 3). The good performances of sensor indicated its potential applications in clinical diagnosis and other related fields.
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Affiliation(s)
- Rong Chai
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, China
| | - Yuanyuan Wang
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, China
| | - Xianwen Kan
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, China.
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Pang Y, Wan N, Shi L, Wang C, Sun Z, Xiao R, Wang S. Dual-recognition surface-enhanced Raman scattering(SERS)biosensor for pathogenic bacteria detection by using vancomycin-SERS tags and aptamer-Fe 3O 4@Au. Anal Chim Acta 2019; 1077:288-296. [PMID: 31307721 DOI: 10.1016/j.aca.2019.05.059] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/21/2019] [Accepted: 05/24/2019] [Indexed: 10/26/2022]
Abstract
Rapid and reliable detection of pathogenic bacteria is vital to prevent and control bacterial diseases. In this study, we present a magnetically assisted surface-enhanced Raman scattering (SERS) biosensor based on the dual-recognition of bacterial cell by aptamer and antibiotic molecules. Aptamer-Fe3O4@Au magnetic nanoparticles (AuMNPs) were synthesized as magnetic and SERS activated substrate for specific bacteria enrichment, vancomycin-SERS tags (Au@MBA) were prepared for the sensitive quantification of pathogenic bacteria. Due to the Au-shell based dual-SERS enhancement and aptamer/vancomycin based dual-recognition ability, a detection limit of 3 cells/mL with a wide dynamic linear range from 10 to 107 cells/mL can be achieved within 50 min without other non-target bacteria interference. When applied in real samples, the approach shows recoveries from 95.0% to 106.4% with relative standard derivation (RSD) less than 5.3%. The SERS strategy could be used to detect a broad range of bacteria by using different aptamers, moreover, the simple operation and precise quantification ability empower this assay great potential in the application of food safety and infectious disease point-of-care diagnosis.
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Affiliation(s)
- Yuanfeng Pang
- Capital Medical University, Department of Toxicology, No. 10 Xitoutiao, You An Men, Beijing, 100069, PR China
| | - Nan Wan
- Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, PR China; The General Hospital of Northern Theater Command, 83 Wenhua Road, Shenyang, 110016, PR China
| | - Luoluo Shi
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China
| | - Chongwen Wang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China.
| | - Zhiwei Sun
- Capital Medical University, Department of Toxicology, No. 10 Xitoutiao, You An Men, Beijing, 100069, PR China.
| | - Rui Xiao
- Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, PR China.
| | - Shengqi Wang
- Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, PR China.
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Zhu D, Miao ZY, Hu Y, Zhang XJ. Single-step, homogeneous and sensitive detection for microRNAs with dual-recognition steps based on luminescence resonance energy transfer (LRET) using upconversion nanoparticles. Biosens Bioelectron 2018; 100:475-81. [PMID: 28963965 DOI: 10.1016/j.bios.2017.09.039] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 09/08/2017] [Accepted: 09/20/2017] [Indexed: 01/23/2023]
Abstract
A single-step, homogeneous and sensitive LRET assay is presented for the detection of miRNAs. The amplification-free assay provides a unique combination of high specificity with dual-recognition approach of different hybridization and ligation steps and preventing background auto-fluorescence in biological samples using upconversion nanoparticles (UCNPs) as signal-producing nanoprobes. The assay probe is composed of signal-producing unit (a pair of homogeneous upconversion luminescence resonance energy transfer (UC-LRET)-based oligonucleotides) and recognition unit (two adaptor oligonucleotides). In the presence of target miRNAs, the probe and target miRNAs leads to the formation of stable double-strands and semi-stable adaptor-miRNAs complexes with an adaptor nick. Ligation of the nick using ligase cause the formation of stable double-strands, resulting in UCNPs-to-dye UC-LRET for detection of the miRNAs with near-infrared radiation (980nm). Sensitive detection of miRNA-21 at concentrations of 200pM to 1.4nM and detection limits of 0.095nM with good precision of 3.9% (RSD) for seven repeated measurements of 500pM miRNAs demonstrate the feasibility of both high throughput and point-of-care clinical diagnostics. The homogeneous UC-LRET assay without any washing can be extended to the application in other important types of nucleic acid analysis.
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