1
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Li M, Teng W, Lu W, Sun M, Duan J, Qiu X. Exo I-based cyclic digestion coupled with synergistic enhancement strategy for integrating dual-mode optical aptasensor platform. Talanta 2024; 276:126286. [PMID: 38776778 DOI: 10.1016/j.talanta.2024.126286] [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: 01/11/2024] [Revised: 05/06/2024] [Accepted: 05/18/2024] [Indexed: 05/25/2024]
Abstract
The improvement of dual-mode techniques was of particular interest to researchers, which might enhance the detection performance and applicability. Here, a dual-mode optical aptasensor (DO-aptasensor) platform based on exonuclease I (Exo I) cyclic digestion and synergistic enhancement strategy had proposed for zearalenone (ZEN). Following the preparation of dumbbell-shaped signal probe, the Exo I-based cyclic digestion amplification performed, and then the synergistic enhancement effect carried out to achieve the Poly-HRP-based colorimetry and FAM-SGI-based fluorescence. The efficient homogeneous system realized through the magnetic separation, while the signal interference further eliminated by the graphene oxide (GO). The LOD values were as low as 0.067 ng mL-1 for colorimetry mode and 0.009 ng mL-1 for fluorescence mode, which reduced 23-fold and 172-fold than ELASA by same ZEN-Apt. This promising platform gave rise to a dual-mode optical readout, improved sensitivity and positively correlated detection. Meanwhile, the DO-aptasensor also exhibited the acceptable specificity, desirable reliability and excellent practicability. This novel avenue of aptasensor platform hold great potential for dual-mode optical monitoring of other targets, which can further expand the application scope of Exo I-based signal amplification and synergistic enhancement effect.
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Affiliation(s)
- Ming Li
- School of Emergency Management, Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR China.
| | - Weipeng Teng
- School of Emergency Management, Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Wenying Lu
- School of Emergency Management, Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Mingna Sun
- Institute of Plant Protection and Agro-Product Safety, Anhui Academy of Agricultural Sciences, Key Laboratory of Agro-Product Safety Risk Evaluation, Ministry of Agriculture, Hefei, 230031, PR China
| | - Jinsheng Duan
- Institute of Plant Protection and Agro-Product Safety, Anhui Academy of Agricultural Sciences, Key Laboratory of Agro-Product Safety Risk Evaluation, Ministry of Agriculture, Hefei, 230031, PR China
| | - Xuchun Qiu
- School of Emergency Management, Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
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2
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Pang H, Zhao Q. Antibody-Bridged DNAzyme Walker for Sensitive Detection of Small Molecules. Anal Chem 2024; 96:6366-6372. [PMID: 38598690 DOI: 10.1021/acs.analchem.4c00250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Sensitive detection of small molecules with biological and environmental interests is important for many applications, such as food safety, disease diagnosis, and environmental monitoring. Herein, we propose a highly selective antibody-bridged DNAzyme walker to sensitively detect small molecules. The antibody-bridged DNAzyme walker consists of a track, small-molecule-labeled DNAzyme walking strand, and antibody against small molecules. The track is built by co-modifying fluorophore-labeled substrates and small-molecule-labeled DNA linkers onto a gold nanoparticle (AuNP). In the absence of the target molecule, the antibody binds small molecule labels at the DNAzyme walking strand and the DNA linker, driving the DNAzyme walking strand on the surface of the AuNP. The attached DNAzyme walking strand moves along the track and cleaves substrates to generate high fluorescence signals to achieve signal amplification. As target molecules exist, they competitively bind with antibody to displace the small-molecule-labeled linker and DNAzyme walking strand, rendering the DNAzyme walker inactive in substrate cleavage and causing weak fluorescence. By using this antibody-bridged DNAzyme walker, we achieved sensitive detection of two biologically important small molecules, digoxin and folic acid. This work provides a new paradigm by combining the signal amplification strategy of a DNA walker and immunorecognition for sensitive and selective detection of small molecules.
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Affiliation(s)
- Han Pang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiang Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
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3
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Fang X, Liu T, Xue C, Xue G, Wu M, Liu P, Hammock BD, Lai W, Peng J, Zhang C. Competitive ratiometric fluorescent lateral flow immunoassay based on dual emission signal for sensitive detection of chlorothalonil. Food Chem 2024; 433:137200. [PMID: 37678117 PMCID: PMC10829940 DOI: 10.1016/j.foodchem.2023.137200] [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: 03/04/2023] [Revised: 07/05/2023] [Accepted: 08/16/2023] [Indexed: 09/09/2023]
Abstract
In this study, we develop a competitive ratiometric fluorescent lateral flow immunoassay (CRF-LFIA) based on dual emission fluorescence signal, which has great advantage in visual and quantitative detection of Chlorothalonil (CTN). Red-emitted fluorescent magnetic nanobeads (FMNBs) and green-emitted aggregation-induced emission fluorescent microsphere (AIEFM) are synthesized and conjugated to antibodies and antigens respectively, resulting in competitive binding with the analyte. The ratiometric fluorescence signal which comes from the overlap of these two fluorescence emissions. FMNBs probes also provide immunomagnetic separation (IMS) to enrich the analysts and resist complex matrix effects. This strip generates a visually discernible yellow-to-green fluorescence color change in the presence of CTN (2 ng/mL), which could be incisively observed by naked eye. Moreover, the limit of detection (LOD) reached 0.152 ng/mL by measurement of color (Red-Green-Blue, RGB) signals. Method validation shows a good correlation between CRF-LFIA and LC-MS/MS.
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Affiliation(s)
- Xuechen Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China
| | - Tingting Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Chang Xue
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China
| | - Guangjian Xue
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Mengyun Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Pengyan Liu
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China
| | - Bruce D Hammock
- Department of Entomology, Nematology and UCD Comprehensive Cancer Center, University of California Davis, CA 95616, United States
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Juan Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China.
| | - Cunzheng Zhang
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China.
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4
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Wang Y, Shen J, Song R, Xu Q, Hu X, Shu Y. Highly bright and stable CsPbBr 3 perovskite nanocrystals with amphiphilic polymer binding based dual-readout lateral flow immunoassay for detection of carcinoembryonic antigen. Talanta 2024; 266:125017. [PMID: 37541002 DOI: 10.1016/j.talanta.2023.125017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/24/2023] [Accepted: 07/29/2023] [Indexed: 08/06/2023]
Abstract
Rapid and highly sensitive detection of tumor marker (TM) is critical for the early diagnosis and treatment of cancers. Herein, utilizing highly bright and water-stable CsPbBr3 perovskite nanocrystals (NCs) capped with amphiphilic polymer ligand of octylamine-modified polyacrylic acid (OPA) and gold nanoparticles (AuNPs) as reporters, a lateral flow immunoassay (LFIA) strip is developed for fluorescence and colorimetric dual-mode detection of carcinoembryonic antigen (CEA). The prepared CsPbBr3 NCs capped by an amphiphilic polymeric of OPA ligand showed high stability and bright fluorescence. Moreover, the AuNPs immunoprobes were captured with CEA antigen and quench the green fluorescence of CsPbBr3/OPA NCs on the T line due to the inner filter effect (IFE). Therefore, CEA could be quantitative analyzed by the dual-readout of fluorescence and colorimetric signal. The detection limits of CEA can reach as low as 0.023 ng/mL and 0.027 ng/mL for the fluorescence and colorimetric mode, respectively. Good specificity and reproducibility were also demonstrated for this method. Finally, the CsPbBr3/OPA NCs-based LFIA showed good accuracy in detection of CEA level from clinical serum samples. This work firstly enables the application of CsPbBr3 perovskite NCs in a LFIA, displaying great potential in point-of-care clinical diagnosis.
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Affiliation(s)
- Yan Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Jin Shen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Ruilong Song
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225002, PR China
| | - Qin Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Xiaoya Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Yun Shu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China.
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5
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Tian B, Wang Y, Tang W, Chen J, Zhang J, Xue S, Zheng S, Cheng G, Gu B, Chen M. Tandem CRISPR nucleases-based lateral flow assay for amplification-free miRNA detection via the designed "locked RNA/DNA" as fuels. Talanta 2024; 266:124995. [PMID: 37524043 DOI: 10.1016/j.talanta.2023.124995] [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: 05/03/2023] [Revised: 06/28/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
Currently, available biosensors based on CRISPR/Cas typically depend on coupling with nucleic acid amplification technologies to enhance their sensitivity. However, this approach often involves intricate amplification processes, which could be time-consuming and susceptible to contamination. In addition, signal readouts often require sophisticated and cumbersome equipment, obstructing the applicability of CRISPR/Cas assays in resource-limited regions. Herein, a tandem CRISPR/Cas13a/Cas12a mechanism (tanCRISPR) has been developed via the designed "Locked RNA/DNA" probe as fuels for the trans-cleavage nucleic acid of Cas13a and activated nucleic acid of Cas12a. Meanwhile, a lateral flow assay (LFA) is designed to combine with this tandem CRISPR/Cas13a/Cas12a mechanism (termed tanCRISPR-LFA), realizing the portable monitoring of miRNA-21. The tanCRISPR could realize the limit of detection at pM levels (266 folds lower than Cas13a-based miRNA testing alone) without the resort to target amplification procedures. Furthermore, the miRNA-21 levels of MDA-MB-231 cell extracts are sensed by tanCRISPR-LFA, which is comparable to qRT-PCR. With the virtues of portability, rapidity, sensitivity, and low cost, tanCRISPR-LFA is amenable for CRISPR/Cas-based biosensing and potential applications in the clinical diagnosis of miRNA-associated diseases.
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Affiliation(s)
- Benshun Tian
- Medical Technology School, Xuzhou Medical University, Xuzhou, 221006, China; Department of Clinical Laboratory Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, 510000, China
| | - Yuxin Wang
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221006, China
| | - Wuyue Tang
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221006, China
| | - Jiali Chen
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221006, China
| | - Jingwen Zhang
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221006, China
| | - Siyi Xue
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221006, China
| | - Shaohui Zheng
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221006, China
| | - Guohui Cheng
- School of Pharmacy, Xuzhou Medical University, Xuzhou, 221006, China.
| | - Bing Gu
- Medical Technology School, Xuzhou Medical University, Xuzhou, 221006, China; Department of Clinical Laboratory Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, 510000, China.
| | - Minghui Chen
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221006, China.
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6
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Xi J, Bu T, Wu H, Wang Y, Cao Y, Xuan C, Feng Q, Wang L. Novel Dumbbell-like CeVO 4 Carrier-Based Immunochromatographic Assay for Highly Sensitive T-2 Toxin Detection in Food Samples. Anal Chem 2023; 95:15531-15539. [PMID: 37753722 DOI: 10.1021/acs.analchem.3c01669] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Improving the sensitivity of immunochromatographic assays (ICAs) lies in the signal strength and probe activity of the labeled tracers, and the color properties and structure of the labeled tracers are key factors affecting the biological activity. In this study, cerium vanadate (CeVO4) of different sizes and shapes (230, 1058, and 710 nm) was synthesized to investigate its impact on the performance of ICA for T-2 detection. The prepared CeVO4 possessed outstanding stability, a large specific surface area, superior biocompatibility, and high compatibility with T-2 mAb (affinity constant was 3.14 × 108 M-1). As labeling probes for competitive ICA, the results showed that 1058 nm of CeVO4 as labels exhibited the best detection performance, with a limit of detection (LOD) of 0.079 ng/mL, which was substantially 19-fold less than the average of gold nanoparticle ICA. Additionally, CeVO4-ICA was effectively used to detect T-2 toxin, and the recovery rate for spiking corn and oatmeal samples was determined to be 81.27-115.44% (relative standard deviation <9.16%). The above information demonstrates the efficiency and applicability of CeVO4-ICA as a technique for quick and thorough identification of T-2 toxin residues in food.
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Affiliation(s)
- Jia Xi
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China
| | - Tong Bu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, Henan, China
| | - Haiyu Wu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China
| | - Ying Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China
| | - Yuanyuan Cao
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China
| | - Chenyu Xuan
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China
| | - Qinlin Feng
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China
| | - Li Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
- Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou 510006, China
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7
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Lu W, Tian Y, Teng W, Qiu X, Li M. Plasmonic colorimetric immunosensor based on Poly-HRP and AuNS etching for tri-modal readout of small molecule. Talanta 2023; 265:124883. [PMID: 37393715 DOI: 10.1016/j.talanta.2023.124883] [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: 04/06/2023] [Revised: 06/14/2023] [Accepted: 06/25/2023] [Indexed: 07/04/2023]
Abstract
It was urgent to improve the intuitive, portable, sensitive and multi-modal detection method for small molecules. In this study, a tri-modal readout of plasmonic colorimetric immunosensor (PCIS) for small molecule (zearalenone, ZEN, as an example) had been established based on the Poly-HRP amplification and gold nanostars (AuNS) etching. The immobilized Poly-HRP from the competitive immunoassay was used to catalyze iodide (I-) into iodine (I2), which could prevent the AuNS etching by I-. With the increasing of ZEN, the AuNS etching was enhanced, and the localized surface plasmon resonance (LSPR) peak of AuNS showed stronger blue shift, which resulted in the color changing from deep blue (no-etching) to blue violet (half-etching) and finally to shiny red (all-etching). The results of PCIS could be selectively obtained by the tri-modal readout: (1) naked eye (LOD of 0.10 ng/mL), (2) smartphone (LOD of 0.07 ng/mL) and (3) UV-spectrum (LOD of 0.04 ng/mL). The proposed PCIS had performed well in the sensitivity, specificity, accuracy and reliability. In addition, the harmless reagents were used in the overall process to further guarantee the environmental friendliness. Therefore, the PCIS might provide a novel and green avenue for the tri-modal readout of ZEN via the intuitive naked eye, portable smartphone and accurate UV-spectrum, which hold great potential for small molecule monitoring.
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Affiliation(s)
- Wenying Lu
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Ye Tian
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Weipeng Teng
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Xuchun Qiu
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Ming Li
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR China.
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8
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Li D, Wang J. Semiconductor/Carbon Quantum Dot-based Hue Recognition Strategy for Point of Need Testing: A Review. ChemistryOpen 2023; 12:e202200165. [PMID: 36891621 PMCID: PMC10068770 DOI: 10.1002/open.202200165] [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: 07/26/2022] [Revised: 01/30/2023] [Indexed: 03/10/2023] Open
Abstract
The requirement to establish novel methods for visual detection is attracting attention in many application fields of analytical chemistry, such as, healthcare, environment, agriculture, and food. The research around subjects like "point-of-need", "hue recognition", "paper-based sensor", "fluorescent sensor", etc. has been always aimed at the opportunity to manufacture convenient and fast-response devices to be used by non-specialists. It is possible to achieve economic rationality and technical simplicity for optical sensing toward target analytes through introduction of fluorescent semiconductor/carbon quantum dot (QD) and paper-based substrates. In this Review, the mechanisms of anthropic visual recognition and fluorescent visual assays, characteristics of semiconductor/carbon QDs and ratiometric fluorescence test paper, and strategies of semiconductor/carbon QD-based hue recognition are described. We cover latest progress in the development and application of point-of-need sensors for visual detection, which is based on a semiconductor/carbon quantum dot-based hue recognition strategy generated by ratiometric fluorescence technology.
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Affiliation(s)
- Daquan Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Jing Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, PR China
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Huang L, Zhang F, Li F, Jia Y, Wang M, Hua X, Wang L. Development of Ic-ELISA and Colloidal Gold Lateral Flow Immunoassay for the Determination of Cypermethrin in Agricultural Samples. BIOSENSORS 2022; 12:1058. [PMID: 36421176 PMCID: PMC9688530 DOI: 10.3390/bios12111058] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/14/2022] [Accepted: 11/19/2022] [Indexed: 06/16/2023]
Abstract
Cypermethrin (CYP) is an insecticide in the pyrethroid family and is used widely in agriculture and for public health purposes. However, CYP has been shown to have negative impacts on reproduction, immunity and nerves in mammals. In this study, a monoclonal antibody (mAb) against CYP was prepared and used to establish an indirect competitive immunosorbent assay (ic-ELISA) and colloidal gold lateral flow immunoassay (LFIA) for the quantitative and qualitative determination of CYP residues in agricultural products. The half inhibition concentration of the ic-ELISA was 2.49 ng/mL, and the cut-off value and visual limit of detection of the LFIA were 0.6 and 0.3 μg/mL, respectively. The recovery rates of the ic-ELISA ranged from 78.8% to 87.6% in tomato, cabbage and romaine lettuce. The qualitative results of LFIA and quantitative results of ic-ELISA and HPLC were in good agreement in blind samples. Overall, the established ic-ELISA and LFIA proved to be accurate and rapid methods for the determination of CYP in agricultural products.
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Affiliation(s)
- Lianrun Huang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Fuxuan Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Fangxuan Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Yin Jia
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Minghua Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Limin Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
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Ouyang H, Yuan H, Huang J, Xian J, Wang W, Fu Z. CoN4-supported Co2N metal clusters for developing sensitive chemiluminescent immunochromatographic assays. Anal Chim Acta 2022; 1232:340478. [DOI: 10.1016/j.aca.2022.340478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/18/2022] [Accepted: 09/29/2022] [Indexed: 11/01/2022]
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Dou J, Shen Q, Yang Y, Song H, Shen D. A smartphone-based device for simultaneous measurement of ratiometric fluorescence and absorbance demonstrated by the determination of hypochlorous acid. NEW J CHEM 2022. [DOI: 10.1039/d2nj03106j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ratiometric fluorescence and absorbance are measured simultaneously by a smartphone-based device according to the corrected brightness ratio in a picture.
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Affiliation(s)
- Jianzhi Dou
- School of Applied Chemistry, Food and Drug, Weifang Engineering Vocational College, Qingzhou 262500, P. R. China
| | - Qirui Shen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Yan Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Haiyan Song
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Dazhong Shen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
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