1
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He G, Dong T, Yang Z, Branstad A, Huang L, Jiang Z. Point-of-care COPD diagnostics: biomarkers, sampling, paper-based analytical devices, and perspectives. Analyst 2022; 147:1273-1293. [PMID: 35113085 DOI: 10.1039/d1an01702k] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) has become the third leading cause of global death. Insufficiency in early diagnosis and treatment of COPD, especially COPD exacerbations, leads to a tremendous economic burden and medical costs. A cost-effective and timely prevention requires decentralized point-of-care diagnostics at patients' residences at affordable prices. Advances in point-of-care (POC) diagnostics may offer new solutions to reduce medical expenditures by measuring salivary and blood biomarkers. Among them, paper-based analytical devices have been the most promising candidates due to their advantages of being affordable, biocompatible, disposable, scalable, and easy to modify. In this review, we present salivary and blood biomarkers related to COPD endotypes and exacerbations, summarize current technologies to collect human whole saliva and whole blood samples, evaluate state-of-the-art paper-based analytical devices that detect COPD biomarkers in saliva and blood, and discuss existing challenges with outlooks on future paper-based POC systems for COPD diagnosis and management.
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Affiliation(s)
- Guozhen He
- Chongqing Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Collaborative Innovation Center on Micro-Nano Transduction and Intelligent Eco-Internet of Things, Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan'an District, Chongqing 400067, China.,Department of Microsystems (IMS), Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern Norway, Postboks 235, 3603 Kongsberg, Norway.
| | - Tao Dong
- Department of Microsystems (IMS), Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern Norway, Postboks 235, 3603 Kongsberg, Norway.
| | - Zhaochu Yang
- Chongqing Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Collaborative Innovation Center on Micro-Nano Transduction and Intelligent Eco-Internet of Things, Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan'an District, Chongqing 400067, China
| | - Are Branstad
- University of Southeast Norway (USN), School of Business, Box 235, 3603 Kongsberg, Norway
| | - Lan Huang
- Chongqing Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Collaborative Innovation Center on Micro-Nano Transduction and Intelligent Eco-Internet of Things, Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan'an District, Chongqing 400067, China
| | - Zhuangde Jiang
- Chongqing Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Collaborative Innovation Center on Micro-Nano Transduction and Intelligent Eco-Internet of Things, Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan'an District, Chongqing 400067, China
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2
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Hendrickson OD, Zvereva EA, Zherdev AV, Dzantiev BB. Ultrasensitive lateral flow immunoassay of phycotoxin microcystin-LR in seafood based on magnetic particles and peroxidase signal amplification. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108655] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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3
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Gong Z, Chan HT, Chen Q, Chen H. Application of Nanotechnology in Analysis and Removal of Heavy Metals in Food and Water Resources. NANOMATERIALS 2021; 11:nano11071792. [PMID: 34361182 PMCID: PMC8308365 DOI: 10.3390/nano11071792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 12/07/2022]
Abstract
Toxic heavy metal contamination in food and water from environmental pollution is a significant public health issue. Heavy metals do not biodegrade easily yet can be enriched hundreds of times by biological magnification, where toxic substances move up the food chain and eventually enter the human body. Nanotechnology as an emerging field has provided significant improvement in heavy metal analysis and removal from complex matrices. Various techniques have been adapted based on nanomaterials for heavy metal analysis, such as electrochemical, colorimetric, fluorescent, and biosensing technology. Multiple categories of nanomaterials have been utilized for heavy metal removal, such as metal oxide nanoparticles, magnetic nanoparticles, graphene and derivatives, and carbon nanotubes. Nanotechnology-based heavy metal analysis and removal from food and water resources has the advantages of wide linear range, low detection and quantification limits, high sensitivity, and good selectivity. There is a need for easy and safe field application of nanomaterial-based approaches.
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Affiliation(s)
- Zhaoyuan Gong
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, China; (Z.G.); (H.T.C.)
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Hiu Ting Chan
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, China; (Z.G.); (H.T.C.)
| | - Qilei Chen
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, China; (Z.G.); (H.T.C.)
- Correspondence: (Q.C.); (H.C.); Tel.: +852-6649-4275 (Q.C.); +852-3411-2060 (H.C.)
| | - Hubiao Chen
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, China; (Z.G.); (H.T.C.)
- Correspondence: (Q.C.); (H.C.); Tel.: +852-6649-4275 (Q.C.); +852-3411-2060 (H.C.)
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4
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Wu M, Zhang X, Wu R, Wang G, Li J, Chai Y, Shen H, Li LS. Sensitive and Quantitative Determination of Cardiac Troponin I Based on Silica-Encapsulated CdSe/ZnS Quantum Dots and a Fluorescence Lateral Flow Immunoassay. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1719125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Min Wu
- Key Lab for Special Functional Materials of Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, China
| | | | - Ruili Wu
- Key Lab for Special Functional Materials of Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, China
| | | | - Jinjie Li
- Key Lab for Special Functional Materials of Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, China
| | | | - Huaibin Shen
- Key Lab for Special Functional Materials of Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, China
| | - Lin Song Li
- Key Lab for Special Functional Materials of Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, China
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5
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Obahiagbon U, Smith JT, Zhu M, Katchman BA, Arafa H, Anderson KS, Blain Christen JM. A compact, low-cost, quantitative and multiplexed fluorescence detection platform for point-of-care applications. Biosens Bioelectron 2018; 117:153-160. [PMID: 29894852 DOI: 10.1016/j.bios.2018.04.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 03/23/2018] [Accepted: 04/02/2018] [Indexed: 11/29/2022]
Abstract
An effective method of combating infectious diseases is the deployment of hand-held devices at the point-of-care (POC) for screening or self-monitoring applications. There is a need for very sensitive, low-cost and quantitative diagnostic devices. In this study, we present a low-cost, multiplexed fluorescence detection platform that has a high sensitivity and wide dynamic range. Our system features inexpensive 3 × 3 mm interference filters with a high stopband rejection, sharp transition edges, and greater than 90% transmission in the passband. In addition to the filters, we improve signal-to-noise ratio by leveraging time for accuracy using a charge-integration-based readout. The fluorescence sensing platform provides a sensitivity to photon flux of ∼1×104photons/mm2sec and has the potential for 2-3 orders of magnitude improvement in sensitivity over standard colorimetric detection that uses colored latex microspheres. We also detail the design, development, and characterization of our low-cost fluorescence detection platform and demonstrate 100% and 97.96% reduction in crosstalk probability and filter cost, respectively. This is achieved by reducing filter dimensions and ensuring appropriate channel isolation in a 2 × 2 array configuration. Practical considerations with low-cost interference filter system design, analysis, and system performance are also discussed. The performance of our platform is compared to that of a standard laboratory array scanner. We also demonstrate the detection of antibodies to human papillomavirus (HPV16) E7 protein, as a potential biomarker for early cervical cancer detection in human plasma.
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Affiliation(s)
- Uwadiae Obahiagbon
- School of Electrical, Computer and Energy Engineering at Arizona State University, Suite 334, Goldwater Center, Tempe, AZ 85287, USA
| | - Joseph T Smith
- School of Electrical, Computer and Energy Engineering at Arizona State University, Suite 334, Goldwater Center, Tempe, AZ 85287, USA; Center for Personalized Diagnostics, Biodesign Institute at Arizona State University, Tempe, AZ 85281, USA
| | - Meilin Zhu
- Center for Personalized Diagnostics, Biodesign Institute at Arizona State University, Tempe, AZ 85281, USA
| | - Benjamin A Katchman
- Center for Personalized Diagnostics, Biodesign Institute at Arizona State University, Tempe, AZ 85281, USA
| | - Hany Arafa
- School of Electrical, Computer and Energy Engineering at Arizona State University, Suite 334, Goldwater Center, Tempe, AZ 85287, USA
| | - Karen S Anderson
- Center for Personalized Diagnostics, Biodesign Institute at Arizona State University, Tempe, AZ 85281, USA
| | - Jennifer M Blain Christen
- School of Electrical, Computer and Energy Engineering at Arizona State University, Suite 334, Goldwater Center, Tempe, AZ 85287, USA.
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6
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Wu Z, Shen H, Hu J, Fu Q, Yao C, Yu S, Xiao W, Tang Y. Aptamer-based fluorescence-quenching lateral flow strip for rapid detection of mercury (II) ion in water samples. Anal Bioanal Chem 2017; 409:5209-5216. [PMID: 28730311 DOI: 10.1007/s00216-017-0491-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/05/2017] [Accepted: 06/22/2017] [Indexed: 01/17/2023]
Abstract
Divalent mercury ion (Hg2+) is one of the most common and stable forms of mercury pollution. In this study, a skillfully designed lateral flow strip (LFS) was developed for sensitive detection of Hg2+ in river water samples. Aptamer, a specific oligonucleotide probe, was used to selectively identify and target Hg2+ instead of antibody in traditional immunechromatographic strips; and the fluorescence-quenching system was used to generate positive and low background florescence signals in the competitive-likely LFS. The linear detection range of the LFS for Hg2+ was 0.13 ng mL-1 to 4 ng mL-1 and the limit of detection (LOD) was 0.13 ng mL-1. This test provided results in 15 min and demonstrated high specificity. For detection of Hg2+ in river water, the results were consistent with inductively coupled plasma-mass spectrometry measurements. The aptamer-based fluorescence-quenching LFS was shown to provide a reliable, accurate method for rapid detection of mercury contamination. Graphical Abstract The principle of the aptamer-based fluorescence-quenching LFS.
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Affiliation(s)
- Ze Wu
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China
| | - Haicong Shen
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China
| | - Junhui Hu
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China
| | - Qiangqiang Fu
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China
| | - Cuize Yao
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China
| | - Shiting Yu
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China
| | - Wei Xiao
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China
| | - Yong Tang
- Department of Bioengineering, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Jinan University, Guangzhou, 510632, China.
- Institute of Biotranslational Medicine, Jinan University, Guangzhou, 510632, China.
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7
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Foubert A, Beloglazova NV, De Saeger S. Comparative study of colloidal gold and quantum dots as labels for multiplex screening tests for multi-mycotoxin detection. Anal Chim Acta 2017; 955:48-57. [DOI: 10.1016/j.aca.2016.11.042] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/13/2016] [Accepted: 11/18/2016] [Indexed: 01/01/2023]
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8
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Xiao K, Wang K, Qin W, Hou Y, Lu W, Xu H, Wo Y, Cui D. Use of quantum dot beads-labeled monoclonal antibody to improve the sensitivity of a quantitative and simultaneous immunochromatographic assay for neuron specific enolase and carcinoembryonic antigen. Talanta 2016; 164:463-469. [PMID: 28107959 DOI: 10.1016/j.talanta.2016.12.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/30/2016] [Accepted: 12/04/2016] [Indexed: 01/11/2023]
Abstract
Detection of multiplex tumor markers was of great importance for cancer diagnosis. Immunochromatographic test strip (ICTS) was the most frequently-used point-of-care detection means. Herein, a convenient and fast method for simultaneous quantitative detection of neuron specific enolase (NSE) and carcinoembryonic antigen (CEA) was developed based on ICTS using quantum dot beads (QBs) as marking material. Good monodispersity, high colloidal stability and carboxyl-modified (COOH-) QBs were used. For this method, two test lines were applied to the NC membrane for simultaneous analysis of CEA and NSE respectively. The ideal limit of CEA and NSE detection was 0.0378ng/mL and 0.0426ng/mL with scarcely any cross-reactivity. Moreover, the fluorescent signal intensity of the nitrocellulose membrane could be easily read out in the cooperation of the "Handing" system without professional operators. The possible clinical utilization of this platform was demonstrated by detecting 100 clinic human serums. The result showed that the platform had sensitivity of 99% and 97% for CEA and NSE, while the specificity was 97% and 100% respectively. Our results indicated that the QBs based ICTS not only owning the ability of sensitive and specific simultaneous detection of CEA and NSE, but also showing the potential in developing this ICTS into a routine part of early lung cancer diagnosis.
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Affiliation(s)
- Kun Xiao
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Kan Wang
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
| | - Weijian Qin
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yafei Hou
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wenting Lu
- Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong 510280, China.
| | - Hao Xu
- School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yan Wo
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai 200011, China.
| | - Daxiang Cui
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
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9
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Raeisossadati MJ, Danesh NM, Borna F, Gholamzad M, Ramezani M, Abnous K, Taghdisi SM. Lateral flow based immunobiosensors for detection of food contaminants. Biosens Bioelectron 2016; 86:235-246. [DOI: 10.1016/j.bios.2016.06.061] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/19/2016] [Accepted: 06/20/2016] [Indexed: 02/02/2023]
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10
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Hu J, Zhang ZL, Wen CY, Tang M, Wu LL, Liu C, Zhu L, Pang DW. Sensitive and Quantitative Detection of C-Reaction Protein Based on Immunofluorescent Nanospheres Coupled with Lateral Flow Test Strip. Anal Chem 2016; 88:6577-84. [DOI: 10.1021/acs.analchem.6b01427] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jiao Hu
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Zhi-Ling Zhang
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Cong-Ying Wen
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Man Tang
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Ling-Ling Wu
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Cui Liu
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Lian Zhu
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Dai-Wen Pang
- Key Laboratory
of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
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11
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Fu Q, Liu HL, Wu Z, Liu A, Yao C, Li X, Xiao W, Yu S, Luo Z, Tang Y. Rough surface Au@Ag core-shell nanoparticles to fabricating high sensitivity SERS immunochromatographic sensors. J Nanobiotechnology 2015; 13:81. [PMID: 26577252 PMCID: PMC4650504 DOI: 10.1186/s12951-015-0142-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 10/26/2015] [Indexed: 12/11/2022] Open
Abstract
Immunochromatographic sensors (ICSs) are inexpensive, simple, portable, and robust, thus making ICSs commonplace in clinical diagnoses, food testing, and environmental monitoring. However, commonly used gold nanoparticles (AuNPs) ICSs have low sensitivity. Therefore, we developed highly sensitive surface enhanced Raman scattering (SERS) ICSs. To enhance the sensitivity of SERS ICSs, rough surface core-shell Au@Ag nanoparticles (RSAu@AgNPs) were prepared by coating silver on the surface of gold nanoflowers (AuNFs). Then these nanoparticles were used as SERS substrate in the SERS ICSs, after which the SERS ICSs were implemented to detect haemoglobin and heavy metal cadmium ion (Cd(2+)). The limit of detection (LOD) of the SERS ICSs for detecting haemoglobin was 8 ng/mL, and the linear range of the SERS ICSs was from 31.3 to 2000 ng/mL. The LOD of the SERS ICSs for detecting Cd(2+) was 0.05 ng/mL and the linear analysis range was from 0.05 to 25 ng/mL. The cross reactivity of the SERS ICSs was studied and results showed that the SERS ICSs exhibited highly specific for detection of haemoglobin and Cd(2+), respectively. The SERS ICSs were then used to detect haemoglobin (spiked in serum and in stool) and Cd(2+) (spiked in tap water, river water, and soil leaching water), and the results showed high recovery. These characteristics indicated that SERS ICSs were ideal tools for clinical diagnosis and environmental pollution monitoring.
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Affiliation(s)
- Qiangqiang Fu
- Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Department of Bioengineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Hongwu Liu Liu
- Integrated Optics and Biophotonics Laboratory, Department of Electronic Engineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Ze Wu
- Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Department of Bioengineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - An Liu
- Integrated Optics and Biophotonics Laboratory, Department of Electronic Engineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Cuize Yao
- Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Department of Bioengineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Xiuqing Li
- Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Department of Bioengineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Wei Xiao
- Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Department of Bioengineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Shiting Yu
- Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Department of Bioengineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Zhi Luo
- Integrated Optics and Biophotonics Laboratory, Department of Electronic Engineering, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Yong Tang
- Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Department of Bioengineering, Jinan University, Guangzhou, 510632, People's Republic of China. .,Institute of Biotranslational Medicine, Jinan University, Guangzhou, 510632, People's Republic of China.
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12
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Wang C, Hou F, Ma Y. Simultaneous quantitative detection of multiple tumor markers with a rapid and sensitive multicolor quantum dots based immunochromatographic test strip. Biosens Bioelectron 2015; 68:156-162. [DOI: 10.1016/j.bios.2014.12.051] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 12/09/2014] [Accepted: 12/22/2014] [Indexed: 12/16/2022]
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13
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Chen A, Yang S. Replacing antibodies with aptamers in lateral flow immunoassay. Biosens Bioelectron 2015; 71:230-242. [PMID: 25912679 DOI: 10.1016/j.bios.2015.04.041] [Citation(s) in RCA: 326] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/12/2015] [Accepted: 04/13/2015] [Indexed: 12/30/2022]
Abstract
Aptamers have been identified against various targets as a type of chemical or nucleic acid ligand by systematic evolution of ligands by exponential enrichment (SELEX) with high sensitivity and specificity. Aptamers show remarkable advantages over antibodies due to the nucleic acid nature and target-induced structure-switching properties and are widely used to design various fluorescent, electrochemical, or colorimetric biosensors. However, the practical applications of aptamer-based sensing and diagnostics are still lagging behind those of antibody-based tests. Lateral flow immunoassay (LFIA) represents a well established and appropriate technology among rapid assays because of its low cost and user-friendliness. The antibody-based platform is utilized to detect numerous targets, but it is always hampered by the antibody preparation time, antibody stability, and effect of modification on the antibody. Seeking alternatives to antibodies is an area of active research and is of tremendous importance. Aptamers are receiving increasing attention in lateral flow applications because of a number of important potential performance advantages. We speculate that aptamer-based LFIA may be one of the first platforms for commercial use of aptamer-based diagnosis. This review first gives an introduction to aptamer including the selection process SELEX with its focus on aptamer advantages over antibodies, and then depicts LFIA with its focus on aptamer opportunities in LFIA over antibodies. Furthermore, we summarize the recent advances in the development of aptamer-based lateral flow biosensing assays with the aim to provide a general guide for the design of aptamer-based lateral flow biosensing assays.
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Affiliation(s)
- Ailiang Chen
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China.
| | - Shuming Yang
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
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14
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Deng SL, Shan S, Xu CL, Liu DF, Xiong YH, Wei H, Lai WH. Sample preincubation strategy for sensitive and quantitative detection of clenbuterol in swine urine using a fluorescent microsphere-based immunochromatographic assay. J Food Prot 2014; 77:1998-2003. [PMID: 25364937 DOI: 10.4315/0362-028x.jfp-14-086] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We describe an ultrasensitive and quantitative immunochromatographic assay to determine the amount of clenbuterol (CLB) in swine urine. In this study, fluorescein isothiocyanate polystyrene fluorescent microspheres were used as probes. A sample preincubation strategy was introduced to this immunochromatographic assay. Results showed that the strategy evidently improved the sensitivity and accuracy of lateral flow assay. The method was completed in 20 min, and a half-maximal inhibitory concentration of 0.13 μg liter(-1) was obtained. The limit of detection of the proposed method to determine CLB in swine urine was 0.01 μg liter(-1), which was lower than the limit of detection of immunochromatographic assays without preincubation. Intra- and interday recoveries of spiked swine urine ranged from 85.0 to 107.5%. The relative standard deviation values of the preincubated test strip ranged from 2.7 to 12.5%. Analysis of the CLB in swine urine samples showed that the result obtained from the lateral flow assay is consistent with that obtained from a commercial enzyme-linked immunosorbent assay kit. Our results suggest that the developed fluorescent microsphere-based immunochromatographic assay may be useful as a rapid screening method to detect CLB quantitatively.
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Affiliation(s)
- Sheng L Deng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, People's Republic of China; Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, People's Republic of China
| | - Shan Shan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, People's Republic of China
| | - Chao L Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, People's Republic of China
| | - Dao F Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, People's Republic of China
| | - Yong H Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, People's Republic of China
| | - Hua Wei
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, People's Republic of China
| | - Wei H Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, People's Republic of China.
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15
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Yeo SJ, Huong DT, Hong NN, Li CY, Choi K, Yu K, Choi DY, Chong CK, Choi HS, Mallik SK, Kim HS, Sung HW, Park H. Rapid and quantitative detection of zoonotic influenza A virus infection utilizing coumarin-derived dendrimer-based fluorescent immunochromatographic strip test (FICT). Am J Cancer Res 2014; 4:1239-49. [PMID: 25285172 PMCID: PMC4184001 DOI: 10.7150/thno.10255] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 09/08/2014] [Indexed: 11/23/2022] Open
Abstract
Great efforts have been made to develop robust signal-generating fluorescence materials which will help in improving the rapid diagnostic test (RDT) in terms of sensitivity and quantification. In this study, we developed coumarin-derived dendrimer-based fluorescent immunochromatographic strip test (FICT) assay with enhanced sensitivity as a quantitative diagnostic tool in typical RDT environments. The accuracy of the proposed FICT was compared with that of dot blot immunoassay techniques and conventional RDTs. Through conjugation of coumarin-derived dendrimers with latex beads, fluorescent emission covering broad output spectral ranges was obtained which provided a distinct advantage of easy discrimination of the fluorescent emission of the latex beads with a simple insertion of a long-pass optical filter away from the excitation wavelength. The newly developed FICT assay was able to detect 100 ng/10 μL of influenza A nucleoprotein (NP) antigen within 5 minutes, which corresponded to 2.5-fold higher sensitivity than that of the dot blot immunoassay or conventional RDTs. Moreover, the FICT assay was confirmed to detect at least four avian influenza A subtypes (H5N3, H7N1, H7N7, and H9N2). On applying the FICT to the clinical swab samples infected with respiratory viruses, our FICT assay was confirmed to differentiate influenza H1N1 infection from other respiratory viral diseases. These data demonstrate that the proposed FICT assay is able to detect zoonotic influenza A viruses with a high sensitivity, and it enables the quantitation of the infection intensity by providing the numerical diagnostic values; thus demonstrating enhanced detectability of influenza A viruses.
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16
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Li X, Li W, Yang Q, Gong X, Guo W, Dong C, Liu J, Xuan L, Chang J. Rapid and quantitative detection of prostate specific antigen with a quantum dot nanobeads-based immunochromatography test strip. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6406-14. [PMID: 24761826 DOI: 10.1021/am5012782] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Convenient and fast testing using an immunochromatography test strip (ICTS) enables rapid yes/no decisions regarding a disease to be made. However, the fundamental limitations of an ICTS, such as a lack of quantitative and sensitive analysis, severely hampers its application in reliable medical testing for the early detection of cancer. Herein, we overcame these limitations by integrating an ICTS with quantum dot nanobeads (QD nanobeads), which were fabricated by encapsulating QDs within modified poly(tert-butyl acrylate-co-ethyl acrylate-co-methacrylic acid) and served as a robust signal-generating reagent for the ICTS. Prostate specific antigen (PSA) was used as a model analyte to demonstrate the performance of the QD nanobeads-based ICTS platform. Under optimized conditions, the concentration of PSA could be determined within 15 min with high sensitivity and specificity using only 40 μL of sample. The detection limit was enhanced by ∼12-fold compared with that of an ICTS that used QDs encapsulated by commercial 11-mercaptoundecanoic acid (QDs@MUA) as the signal-generating reagent. At the same time, the possible clinical utility of this approach was demonstrated by measurements recorded from PSA-positive patient specimens. Our data suggest that the QD nanobeads-based ICTS platform is not only rapid and low-cost but also highly sensitive and specific for use in quantitative point-of-care diagnostics; thus, it holds promise for becoming a part of routine medical testing for the early cancer of detection.
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Affiliation(s)
- Xue Li
- Institute of Nanobiotechnology, School of Materials Science and Engineering, School of Precision Instruments and Opto-Engineering, Tianjin University and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin 300072, P.R. China
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17
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Arnandis-Chover T, Morais S, González-Martínez MÁ, Puchades R, Maquieira Á. High density MicroArrays on Blu-ray discs for massive screening. Biosens Bioelectron 2014; 51:109-14. [DOI: 10.1016/j.bios.2013.07.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 07/19/2013] [Accepted: 07/22/2013] [Indexed: 12/01/2022]
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18
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Fu Q, Tang Y, Shi C, Zhang X, Xiang J, Liu X. A novel fluorescence-quenching immunochromatographic sensor for detection of the heavy metal chromium. Biosens Bioelectron 2013; 49:399-402. [DOI: 10.1016/j.bios.2013.04.048] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Revised: 04/21/2013] [Accepted: 04/23/2013] [Indexed: 10/26/2022]
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19
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Lee LG, Nordman ES, Johnson MD, Oldham MF. A low-cost, high-performance system for fluorescence lateral flow assays. BIOSENSORS-BASEL 2013; 3:360-73. [PMID: 25586412 PMCID: PMC4263565 DOI: 10.3390/bios3040360] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/09/2013] [Accepted: 10/10/2013] [Indexed: 11/16/2022]
Abstract
We demonstrate a fluorescence lateral flow system that has excellent sensitivity and wide dynamic range. The illumination system utilizes an LED, plastic lenses and plastic and colored glass filters for the excitation and emission light. Images are collected on an iPhone 4. Several fluorescent dyes with long Stokes shifts were evaluated for their signal and nonspecific binding in lateral flow. A wide range of values for the ratio of signal to nonspecific binding was found, from 50 for R-phycoerythrin (R-PE) to 0.15 for Brilliant Violet 605. The long Stokes shift of R-PE allowed the use of inexpensive plastic filters rather than costly interference filters to block the LED light. Fluorescence detection with R-PE and absorbance detection with colloidal gold were directly compared in lateral flow using biotinylated bovine serum albumen (BSA) as the analyte. Fluorescence provided linear data over a range of 0.4–4,000 ng/mL with a 1,000-fold signal change while colloidal gold provided non-linear data over a range of 16–4,000 ng/mL with a 10-fold signal change. A comparison using human chorionic gonadotropin (hCG) as the analyte showed a similar advantage in the fluorescent system. We believe our inexpensive yet high-performance platform will be useful for providing quantitative and sensitive detection in a point-of-care setting.
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Affiliation(s)
- Linda G Lee
- Song Diagnostic Research LLC, 1 Megans Lane, Woodside, CA 94062, USA.
| | - Eric S Nordman
- Song Diagnostic Research LLC, 1 Megans Lane, Woodside, CA 94062, USA.
| | - Martin D Johnson
- Song Diagnostic Research LLC, 1 Megans Lane, Woodside, CA 94062, USA.
| | - Mark F Oldham
- Song Diagnostic Research LLC, 1 Megans Lane, Woodside, CA 94062, USA.
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20
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Merel S, Walker D, Chicana R, Snyder S, Baurès E, Thomas O. State of knowledge and concerns on cyanobacterial blooms and cyanotoxins. ENVIRONMENT INTERNATIONAL 2013; 59:303-27. [PMID: 23892224 DOI: 10.1016/j.envint.2013.06.013] [Citation(s) in RCA: 474] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 06/12/2013] [Accepted: 06/18/2013] [Indexed: 05/17/2023]
Abstract
Cyanobacteria are ubiquitous microorganisms considered as important contributors to the formation of Earth's atmosphere and nitrogen fixation. However, they are also frequently associated with toxic blooms. Indeed, the wide range of hepatotoxins, neurotoxins and dermatotoxins synthesized by these bacteria is a growing environmental and public health concern. This paper provides a state of the art on the occurrence and management of harmful cyanobacterial blooms in surface and drinking water, including economic impacts and research needs. Cyanobacterial blooms usually occur according to a combination of environmental factors e.g., nutrient concentration, water temperature, light intensity, salinity, water movement, stagnation and residence time, as well as several other variables. These environmental variables, in turn, have promoted the evolution and biosynthesis of strain-specific, gene-controlled metabolites (cyanotoxins) that are often harmful to aquatic and terrestrial life, including humans. Cyanotoxins are primarily produced intracellularly during the exponential growth phase. Release of toxins into water can occur during cell death or senescence but can also be due to evolutionary-derived or environmentally-mediated circumstances such as allelopathy or relatively sudden nutrient limitation. Consequently, when cyanobacterial blooms occur in drinking water resources, treatment has to remove both cyanobacteria (avoiding cell lysis and subsequent toxin release) and aqueous cyanotoxins previously released. Cells are usually removed with limited lysis by physical processes such as clarification or membrane filtration. However, aqueous toxins are usually removed by both physical retention, through adsorption on activated carbon or reverse osmosis, and chemical oxidation, through ozonation or chlorination. While the efficient oxidation of the more common cyanotoxins (microcystin, cylindrospermopsin, anatoxin and saxitoxin) has been extensively reported, the chemical and toxicological characterization of their by-products requires further investigation. In addition, future research should also investigate the removal of poorly considered cyanotoxins (β-methylamino-alanine, lyngbyatoxin or aplysiatoxin) as well as the economic impact of blooms.
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Affiliation(s)
- Sylvain Merel
- Department of Chemical and Environmental Engineering, University of Arizona, 1133 James E. Rogers Way, Tucson, AZ 85721, USA.
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21
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Song HO, Lee B, Bhusal RP, Park B, Yu K, Chong CK, Cho P, Kim SY, Kim HS, Park H. Development of a novel fluorophore for real-time biomonitoring system. PLoS One 2012; 7:e48459. [PMID: 23133635 PMCID: PMC3487730 DOI: 10.1371/journal.pone.0048459] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 09/26/2012] [Indexed: 01/01/2023] Open
Abstract
Rapid in-field diagnosis is very important to prevent the outbreak of various infectious and contagious diseases. Highly sensitive and quantitative detection of diseases can be performed using fluorescent immunochemical assay with specific antigen-antibody binding and a good quality fluorophore. This can lead to the development of a small, portable, quantitative biosensor to transmit diagnostic results to a control center in order to systematically prevent disease outbreaks. In this study, we developed a novel fluorophore, coumarin-derived dendrimer, with high emission intensity, strong signal brightness, and high photostability. It is easily coupled with biomolecules and emits strong and stable fluorescence at 590 nm with excitation at 455 nm. Application to fluorescent immunochromatographic test (FICT) showed that the novel coumarin-derived dendrimer bioconjugate could detect antigens at amount as low as 0.1 ng. The clinical results and the spectral characteristics of the novel coumarin-derived dendrimer open, for the first time, the possibility of developing a cost/energy efficient LED-based portable quantitative biosensor for point-of-care (POC) disease diagnosis, which can permit real time monitoring (U-healthcare system) by a disease control center.
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Affiliation(s)
- Hyun-Ok Song
- Zoonosis Research Center, Department of Infection Biology, Wonkwang University College of Medicine, Iksan, Jeonbuk, Republic of Korea
| | - Binna Lee
- Zoonosis Research Center, Department of Infection Biology, Wonkwang University College of Medicine, Iksan, Jeonbuk, Republic of Korea
| | - Ram Prasad Bhusal
- College of Pharmacy, Institute of Pharmaceutical Research and Development, Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Byounghun Park
- Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Kyoungsik Yu
- Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Chom-Kyu Chong
- Department of Biochemistry, Division of Life Science, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - PyoYun Cho
- Zoonosis Research Center, Department of Infection Biology, Wonkwang University College of Medicine, Iksan, Jeonbuk, Republic of Korea
| | - Sung Yeon Kim
- College of Pharmacy, Institute of Pharmaceutical Research and Development, Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Hak Sung Kim
- College of Pharmacy, Institute of Pharmaceutical Research and Development, Wonkwang University, Iksan, Jeonbuk, Republic of Korea
- * E-mail: (HSK); (HP)
| | - Hyun Park
- Zoonosis Research Center, Department of Infection Biology, Wonkwang University College of Medicine, Iksan, Jeonbuk, Republic of Korea
- * E-mail: (HSK); (HP)
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22
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Chen C, Wu J. A fast and sensitive quantitative lateral flow immunoassay for Cry1Ab based on a novel signal amplification conjugate. SENSORS 2012; 12:11684-96. [PMID: 23112677 PMCID: PMC3478804 DOI: 10.3390/s120911684] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 08/06/2012] [Accepted: 08/20/2012] [Indexed: 11/30/2022]
Abstract
A novel lateral flow immunoassay (LFIA) signal amplification strategy for the detection of Cry1Ab based on amplification via a polylysine (PL) chain and biotin-streptavidin system (BSAS) is described. In this system, multiple fluorescence dyes (FL) were directly coated on the surface of PL and conjugated with antibody via the BSAS for construction of novel signal amplification (FLPL-BSAS-mAb1) conjugates, in which FL, PL and BSAS were employed to improve the sensitivity of LFIA. Compared with conventional LFIA, the sensitivity of FLPL-BSAS-mAb1-based LFIA was increased by approximately 100-fold. Quantified linearity was achieved in the value range of 0–1,000 pg/mL. The limit of detection (LOD) was reached 10 pg/mL after optimization of reaction conditions. To our knowledge, this represents one of the most sensitive LFIA for Cry1Ab yet reported. Furthermore, the detection time for this method was about 10 min. Therefore, it should be an attractive alternative compared to conventional immunoassays in routine control for Cry1Ab.
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Affiliation(s)
- Chunxiang Chen
- Department of Control Science and Engineering, Zhejiang University, Hangzhou 310058, China; E-Mail:
| | - Jian Wu
- Department of Biosytems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
- Author to whom correspondence should be addressed; E-Mail: ; Tel./Fax: +86-571-8898-2180
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23
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Sakurai A, Shibasaki F. Updated values for molecular diagnosis for highly pathogenic avian influenza virus. Viruses 2012; 4:1235-57. [PMID: 23012622 PMCID: PMC3446759 DOI: 10.3390/v4081235] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 07/31/2012] [Accepted: 08/03/2012] [Indexed: 01/31/2023] Open
Abstract
Highly pathogenic avian influenza (HPAI) viruses of the H5N1 strain pose a pandemic threat. H5N1 strain virus is extremely lethal and contagious for poultry. Even though mortality is 59% in infected humans, these viruses do not spread efficiently between humans. In 1997, an outbreak of H5N1 strain with human cases occurred in Hong Kong. This event highlighted the need for rapid identification and subtyping of influenza A viruses (IAV), not only to facilitate surveillance of the pandemic potential of avian IAV, but also to improve the control and treatment of infected patients. Molecular diagnosis has played a key role in the detection and typing of IAV in recent years, spurred by rapid advances in technologies for detection and characterization of viral RNAs and proteins. Such technologies, which include immunochromatography, quantitative real-time PCR, super high-speed real-time PCR, and isothermal DNA amplification, are expected to contribute to faster and easier diagnosis and typing of IAV.
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Affiliation(s)
- Akira Sakurai
- Department of Molecular Medical Research, Tokyo Metropolitan Institute of Medical Science, 2-1-6, Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan.
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24
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Seyer A, Fenaille F, Féraudet-Tarisse C, Volland H, Popoff MR, Tabet JC, Junot C, Becher F. Rapid Quantification of Clostridial Epsilon Toxin in Complex Food and Biological Matrixes by Immunopurification and Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry. Anal Chem 2012; 84:5103-9. [DOI: 10.1021/ac300880x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Anfossi L, Baggiani C, Giovannoli C, D'Arco G, Giraudi G. Lateral-flow immunoassays for mycotoxins and phycotoxins: a review. Anal Bioanal Chem 2012; 405:467-80. [PMID: 22543716 DOI: 10.1007/s00216-012-6033-4] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 04/03/2012] [Accepted: 04/06/2012] [Indexed: 01/06/2023]
Abstract
Natural toxin (for example mycotoxin and phycotoxin) contamination of food is of safety and economic concern, so much effort is devoted to the development of screening methods which enable the toxins to be continuously and widely monitored in food and feed. More generally speaking, rapid and non-instrumental assays for detection of a variety of food contaminants are generating ever-increasing scientific and technological interest because they enable high-throughput, economical, on-site monitoring of such contaminants. Among rapid methods for first-level screening of food contaminants, lateral-flow immunoassay (LFIA), also named immunochromatographic assay or immune-gold colloid immunoassay, has recently attracted scientific and industrial interest because of its attractive property of enabling very rapid, one-step, in-situ analysis. This review focuses on new aspects of the development and optimization of lateral-flow devices for mycotoxin and phycotoxin detection, including strategies for management of matrix interference and, particularly, for investigation of the improvements achieved by signal-enhancing strategies or by application of non-gold nanoparticle signal reporters.
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Affiliation(s)
- Laura Anfossi
- Department of Analytical Chemistry, University of Turin, Turin, Italy.
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26
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27
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Richardson SD, Ternes TA. Water analysis: emerging contaminants and current issues. Anal Chem 2011; 83:4614-48. [PMID: 21668018 DOI: 10.1021/ac200915r] [Citation(s) in RCA: 340] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Susan D Richardson
- National Exposure Research Laboratory, U.S. Environmental Protection Agency, Athens, Georgia 30605, USA
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28
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Morais S, Tamarit-López J, Puchades R, Maquieira A. Determination of microcystins in river waters using microsensor arrays on disk. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:9024-9029. [PMID: 21047094 DOI: 10.1021/es101653r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The development of simple, accurate, and rapid multisample analytical methodologies to find out critical targets in waters is highly demanded. Optical microsensor arrays to determine microcystins in river waters are developed on the polycarbonate side of compact discs. The working principle of the sensors relied on an indirect competitive microimmunoassay, where free microcystin LR (MC-LR) competes with immobilized conjugate for specific monoclonal antibody. The results of the immunoreaction are detected with a DVD drive, showing the readouts in minutes. The method reached a sensitivity (IC(50)) for MC-LR of 1.04 μg/L and a linear response in the range 0.12-2.00 μg/L, allowing its determination below the upper limit proposed by the World Health Organization in drinking water. The developed analytical approach shows simplicity, good sensitivity, high throughput capability, and rapidity (37 min) in field use. The optimized assay showed also high congener reactivity to MC-LY (144%), MC-LA (125%), MC-LF (119%), MC-LW (102%), MC-YR (83%), and nodularin (94%). Furthermore, the suitability of the disk biosensor to quantify MC-LR was successfully evaluated analyzing river water samples, obtaining excellent recoveries (78-113%). Precoated discs are stable for at least seven weeks without loosing their analytical performances. Also, the portability of the analytical system permits on-site analysis and quantification, saving time and other resources. To our knowledge, this is the only work where a portable, easy-to-use, array based system has been developed for on-site microcystin quantification and applied to simultaneously analyze 42 samples plus the calibration curve, reaching microgram per liter sensitivity.
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Affiliation(s)
- Sergi Morais
- Instituto Universitario de Reconocimiento Molecular y Desarrollo Tecnológico, Departamento de Química, Universidad Politécnica de Valencia, camino de vera s/n E46022, Valencia, Spain
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