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Chen M, Xie Y, Li M. Molecular-Sieving Label-Free Surface-Enhanced Raman Spectroscopy for Sensitive Detection of Trace Small-Molecule Biomarkers in Clinical Samples. NANO LETTERS 2024; 24:11520-11528. [PMID: 39234992 DOI: 10.1021/acs.nanolett.4c02890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
Small-molecule biomarkers are ubiquitous in biological fluids with pathological implications, but major challenges persist in their quantitative analysis directly in complex clinical samples. Herein, a molecular-sieving label-free surface-enhanced Raman spectroscopy (SERS) biosensor is reported for selective quantitative analysis of trace small-molecule trimetazidine (TMZ) in clinical samples. Our biosensor is fabricated by decorating a superhydrophobic monolayer of microporous metal-organic frameworks (MOF) shell-coated Au nanostar nanoparticles on a silicon substrate. The design strategy principally combines the hydrophobic surface-enabled physical confinement and preconcentration, MOF-assisted molecular enrichment and sieving of small molecules, and sensitive SERS detection. Our biosensor utilizes such a "molecular confinement-and-sieving" strategy to achieve a five orders-of-magnitude dynamic detection range and a limit of detection of ≈0.5 nM for TMZ detection in either urine or whole blood. We further demonstrate the applicability of our biosensing platform for longitudinal label-free SERS detection of the TMZ level directly in clinical samples in a mouse model.
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Affiliation(s)
- Mingyang Chen
- School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Yangcenzi Xie
- School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Ming Li
- School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China
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2
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Salazar MP, da Costa Lima Suassuna Monteiro JF, Veloso Carvalho-Silva WH, Nunes Diniz GT, Werkhauser RP, Lapa Montenegro LM, Schindler HC. Development and evaluation of a single-tube nested PCR with colorimetric assay for Mycobacterium tuberculosis detection. Biotechniques 2024; 76:235-244. [PMID: 38602382 DOI: 10.2144/btn-2023-0080] [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: 08/16/2023] [Accepted: 03/22/2024] [Indexed: 04/12/2024] Open
Abstract
Molecular techniques have revolutionized tuberculosis (TB) diagnosis by offering a faster and more sensitive approach, detecting Mycobacterium tuberculosis (Mtb) DNA directly from samples. Single-tube nested PCR (STNPCR) combines two PCR reactions with separate oligonucleotide sets in a single tube. Moreover, colorimetric methods in PCR products have been studied for pathogen detection. Thus, this study aimed to establish a novel system based on colorimetric STNPCR for Mtb detection using microtiter plates with IS6110-amplified fragments. The results showed a general colorimetric STNPCR detection limit of 1 pg/μl. Its general sensitivity and specificity were 76.62 and 60.53%, respectively, with kappa index agreement of 0.166.
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Affiliation(s)
- Marcela Pereira Salazar
- Laboratory of Immunoepidemiology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Pernambuco, 50740-465, Brazil
- Contributed equally to this work and are considered as co-first authors
| | - Juliana Figueiredo da Costa Lima Suassuna Monteiro
- Laboratory of Immunoepidemiology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Pernambuco, 50740-465, Brazil
- Contributed equally to this work and are considered as co-first authors
| | | | - George Tadeu Nunes Diniz
- Laboratory of Quantitative Methods, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Pernambuco, 50740-465, Brazil
| | - Roberto Pereira Werkhauser
- Laboratory of Immunoepidemiology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Pernambuco, 50740-465, Brazil
| | - Lílian Maria Lapa Montenegro
- Laboratory of Immunoepidemiology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Pernambuco, 50740-465, Brazil
| | - Haiana Charifker Schindler
- Laboratory of Immunoepidemiology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Pernambuco, 50740-465, Brazil
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3
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Lee S, Park JS, Woo H, Yoo YK, Lee D, Chung S, Yoon DS, Lee KB, Lee JH. Rapid deep learning-assisted predictive diagnostics for point-of-care testing. Nat Commun 2024; 15:1695. [PMID: 38402240 PMCID: PMC10894262 DOI: 10.1038/s41467-024-46069-2] [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: 09/19/2023] [Accepted: 02/12/2024] [Indexed: 02/26/2024] Open
Abstract
Prominent techniques such as real-time polymerase chain reaction (RT-PCR), enzyme-linked immunosorbent assay (ELISA), and rapid kits are currently being explored to both enhance sensitivity and reduce assay time for diagnostic tests. Existing commercial molecular methods typically take several hours, while immunoassays can range from several hours to tens of minutes. Rapid diagnostics are crucial in Point-of-Care Testing (POCT). We propose an approach that integrates a time-series deep learning architecture and AI-based verification, for the enhanced result analysis of lateral flow assays. This approach is applicable to both infectious diseases and non-infectious biomarkers. In blind tests using clinical samples, our method achieved diagnostic times as short as 2 minutes, exceeding the accuracy of human analysis at 15 minutes. Furthermore, our technique significantly reduces assay time to just 1-2 minutes in the POCT setting. This advancement has the potential to greatly enhance POCT diagnostics, enabling both healthcare professionals and non-experts to make rapid, accurate decisions.
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Affiliation(s)
- Seungmin Lee
- Department of Electrical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon, Seoul, 01897, Republic of Korea
- School of Biomedical Engineering, Korea University, 145 Anam-ro, Seongbuk, Seoul, 02841, Republic of Korea
| | - Jeong Soo Park
- Department of Electrical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon, Seoul, 01897, Republic of Korea
- School of Mechanical Engineering, Korea University, 145 Anam-ro, Seoungbuk-gu, Seoul, 02841, Republic of Korea
| | - Hyowon Woo
- Department of Electrical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon, Seoul, 01897, Republic of Korea
| | - Yong Kyoung Yoo
- Department of Electronic Engineering, Catholic Kwandong University, 24, Beomil-ro 579 beon-gil, Gangneung-si, Gangwon-do, 25601, Republic of Korea
| | - Dongho Lee
- CALTH Inc., Changeop-ro 54, Seongnam, Gyeonggi, 13449, Republic of Korea
| | - Seok Chung
- School of Mechanical Engineering, Korea University, 145 Anam-ro, Seoungbuk-gu, Seoul, 02841, Republic of Korea
| | - Dae Sung Yoon
- School of Biomedical Engineering, Korea University, 145 Anam-ro, Seongbuk, Seoul, 02841, Republic of Korea
- Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, Republic of Korea
- Astrion Inc, Seoul, 02841, Republic of Korea
| | - Ki-Baek Lee
- Department of Electrical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon, Seoul, 01897, Republic of Korea
| | - Jeong Hoon Lee
- Department of Electrical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon, Seoul, 01897, Republic of Korea.
- CALTH Inc., Changeop-ro 54, Seongnam, Gyeonggi, 13449, Republic of Korea.
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Highly sensitive and quantitative biodetection with lipid-polymer hybrid nanoparticles having organic room-temperature phosphorescence. Biosens Bioelectron 2021; 199:113889. [PMID: 34968954 DOI: 10.1016/j.bios.2021.113889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 02/07/2023]
Abstract
A versatile organic room-temperature phosphorescence (RTP)-based "turn on" biosensor platform has been devised with high sensitivity by combining oxygen-sensitive lipid-polymer hybrid RTP nanoparticles with a signal-amplifying enzymatic oxygen scavenging reaction in aqueous solutions. When integrated with a sandwich-DNA hybridization assay on 96-well plates, our phosphorimetric sensor demonstrates sequence-specific detection of a cell-free cancer biomarker, a TP53 gene fragment, with a sub-picomolar (0.5 p.m.) detection limit. This assay is compatible with detecting cell-free nucleic acids in human urine samples. Simply by re-programming the detection probe, our unique methodology can be adapted to a broad range of biosensor applications for biomarkers of great clinical importance but difficult to detect due to their low abundance in vivo.
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Zhou YC, He SM, Wen ZL, Zhao JW, Song YZ, Zhang Y, Zhang SL. A Rapid and Accurate Detection Approach for Multidrug-Resistant Tuberculosis Based on PCR-ELISA Microplate Hybridization Assay. Lab Med 2021; 51:606-613. [PMID: 32447387 DOI: 10.1093/labmed/lmaa016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Rapid and accurate diagnosis of multidrug-resistant tuberculosis (MDR-TB) is important for timely and appropriate therapy. In this study, a rapid and easy-to-perform molecular test that integrated polymerase chain reaction (PCR) amplification and a specific 96-well microplate hybridization assay, called PCR-ELISA (enzyme-linked immunosorbent assay), were developed for detection of mutations in rpoB, katG, and inhA genes responsible for rifampin (RIF) and isoniazid (INH) resistance and prediction of drug susceptibility in Mycobacterium tuberculosis clinical isolates. We evaluated the utility of this method by using 32 multidrug-resistent (MDR) isolates and 22 susceptible isolates; subsequently, we compared the results with data obtained by conventional drug susceptibility testing and DNA sequencing. The sensitivity and specificity of the PCR-ELISA test were 93.7% and 100% for detecting RIF resistance, and 87.5% and 100% for detecting INH resistance, respectively. These results were comparable to those yielded by commercially available molecular tests such as the GenoType MTBDRplus assay. Based on the aforementioned results, we conclude that the PCR-ELISA microplate hybridization assay is a rapid, inexpensive, convenient, and reliable test that will be useful for rapid diagnosis of MDR-TB, for improved clinical care.
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Affiliation(s)
- Ye-Cheng Zhou
- Shanghai Public Health Clinical Center, Shanghai, China.,Key Laboratory of Biological Resource and Ecological Environment of the Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shu-Mei He
- Key Laboratory for Basic Life Science Research of Tibet Autonomous Region, Xianyang, China.,Key Laboratory of High Altitude Environment and Gene-Related Disease of Tibet Ministry of Education, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Zi-Lu Wen
- Shanghai Public Health Clinical Center, Shanghai, China
| | - Jun-Wei Zhao
- Clinical Laboratory, First Affiliated Hospital of Zhengzhou Universityy, Zhengzhou, China
| | | | - Ying Zhang
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
| | - Shu-Lin Zhang
- Shanghai Public Health Clinical Center, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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6
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Molecular prevalence and phylogenetic analysis of human papillomavirus in normal cervical samples from northern Iran. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Kimani MK, Loo R, Goluch ED. Biosample Concentration Using Microscale Forward Osmosis with Electrochemical Monitoring. Anal Chem 2019; 91:7487-7494. [DOI: 10.1021/acs.analchem.9b02163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Martin K. Kimani
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Rachel Loo
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Edgar D. Goluch
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- Department of Bioengineering, Biology, Civil & Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
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8
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Talkhabifard M, Javid N, Moradi A, Ghaemi A, Tabarraei A. Evaluation of a Probe-Based PCR-ELISA System for Simultaneous Semi Quantitative Detection and Genotyping of Human Cytomegalovirus (HCMV) Infection in Clinical Specimens. Open Microbiol J 2017; 11:83-91. [PMID: 28694881 PMCID: PMC5481617 DOI: 10.2174/1874285801711010083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 03/12/2017] [Accepted: 03/19/2017] [Indexed: 12/29/2022] Open
Abstract
Background: Human cytomegalovirus (HCMV) is a common opportunistic pathogen that causes serious complications in immunosuppressed patients and infected newborns. In this study, PCR-ELISA was optimized for semi-quantitative detection of infection in clinical specimens and simultaneous genotyping of glycoprotein B for 4 major genotypes, due to its significance. Method: During DIG-labeling PCR, a pair of primers amplifies a fragment of variable region of the glycoprotein B encoding sequence. Under optimized conditions, labeled Target amplicons hybridize to biotinated specific probes and are detected in an ELISA system. Results: PCR-ELISA system showed specific performance with detection limit of approximately 100 copies of CMV DNA. The linear correlation was observed between the PCR-ELISA results (OD) and logarithmic scale of CMV (r=0.979). Repeatability of PCR-ELISA detection system for intra-assay and inter-assay was evaluated for negative and positive samples. In optimized conditions of hybridization, differentiation between genotypes of glycoprotein B was feasible using genotype-specific probes in PCR-ELISA genotyping system. In comparison with sequencing method, genotyping system was confirmed with kappa index of 1. Conclusion: PCR-ELISA is proposed as an applicable and reliable technique for semi-quantitative diagnosis and typing of the infection. This technique is flexible to apply in a variety of molecular fields.
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Affiliation(s)
- Majid Talkhabifard
- Faculty of Advanced Medical Technologies, Golestan University of Medical Sciences, Gorgan, Iran
| | - Naeme Javid
- Department of Microbiology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Abdolvahab Moradi
- Department of Microbiology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Amir Ghaemi
- Department of Microbiology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Alijan Tabarraei
- Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, Iran
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9
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Vizzini P, Iacumin L, Comi G, Manzano M. Development and application of DNA molecular probes. AIMS BIOENGINEERING 2017. [DOI: 10.3934/bioeng.2017.1.113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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10
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Popov P, Mann EK, Jákli A. Thermotropic liquid crystal films for biosensors and beyond. J Mater Chem B 2017; 5:5061-5078. [DOI: 10.1039/c7tb00809k] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Recent results on structural properties and possible bio-sensing applications of planar liquid crystal films are reviewed.
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Affiliation(s)
- Piotr Popov
- Department of Physics
- Kent State University
- Kent
- USA
- Liquid Crystal Institute
| | | | - Antal Jákli
- Liquid Crystal Institute
- Kent State University
- Kent
- USA
- Complex Fluid Group
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11
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Peltomaa R, Vaghini S, Patiño B, Benito-Peña E, Moreno-Bondi MC. Species-specific optical genosensors for the detection of mycotoxigenic Fusarium fungi in food samples. Anal Chim Acta 2016; 935:231-8. [DOI: 10.1016/j.aca.2016.06.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/02/2016] [Accepted: 06/06/2016] [Indexed: 01/26/2023]
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12
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Time to viral clearance after successful conservative treatment for high-risk HPV-infected high-grade cervical intraepithelial neoplasia and early invasive squamous cervical carcinoma. Diagn Microbiol Infect Dis 2016; 86:270-272. [PMID: 27601381 DOI: 10.1016/j.diagmicrobio.2016.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/02/2016] [Accepted: 08/05/2016] [Indexed: 01/21/2023]
Abstract
Two-thirds of 152 patients treated for high-grade cervical disease, free of persistence/recurrence, and followed-up both with human papillomavirus (HPV) DNA testing and HPV genotyping cleared their high-risk HPV infection within 1year. Viral clearance continued at diminishing rates during the second and the third year, at the end of which it was virtually complete.
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13
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Popov P, Honaker LW, Kooijman EE, Mann EK, Jákli AI. A liquid crystal biosensor for specific detection of antigens. SENSING AND BIO-SENSING RESEARCH 2016. [DOI: 10.1016/j.sbsr.2016.03.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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14
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Dubey P, Mishra N, Rajukumar K, Behera S, Kalaiyarasu S, Nema R, Prakash A. Development of a RT-PCR ELISA for simultaneous detection of BVDV-1, BVDV-2 and BDV in ruminants and its evaluation on clinical samples. J Virol Methods 2015; 213:50-6. [DOI: 10.1016/j.jviromet.2014.11.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/28/2014] [Accepted: 11/04/2014] [Indexed: 11/16/2022]
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15
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Santaclara FJ, Velasco A, Pérez-Martín RI, Quinteiro J, Rey-Méndez M, Pardo MA, Jimenez E, Sotelo CG. Development of a multiplex PCR-ELISA method for the genetic authentication of Thunnus species and Katsuwonus pelamis in food products. Food Chem 2014; 180:9-16. [PMID: 25766795 DOI: 10.1016/j.foodchem.2014.11.076] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 03/24/2014] [Accepted: 11/12/2014] [Indexed: 10/24/2022]
Abstract
In the present work a PCR-ELISA technique for the authentication of Thunnus species was developed. This method is composed by four systems that can be used in a hierarchical way allowing the identification of several scombroids species; or each individual system independently. The hierarchical strategy, proposes a first step, to assign one sample to the Thunnus genus. Next, if the result is positive, several tests can be applied to assign the sample to some particular species of the Thunnus genus. In the case that the result is negative (absence of Thunnus species), it is possible to verify if Katsuwonus pelamis is included in the sample. The method even allows the detection of mixtures of these species in relatively low amounts (up to 1%). Finally, this method was applied to 11 commercial samples to verify the labelling status of tuna products in the market, detecting that 18% were mislabelling.
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Affiliation(s)
- Francisco J Santaclara
- Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain.
| | - Amaya Velasco
- Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
| | - Ricardo I Pérez-Martín
- Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
| | - Javier Quinteiro
- Universidad de Santiago de Compostela, Facultad de Biología, Departamento de Bioquímica y Biología Molecular, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Manuel Rey-Méndez
- Universidad de Santiago de Compostela, Facultad de Biología, Departamento de Bioquímica y Biología Molecular, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Miguel Angel Pardo
- AZTI - Tecnalia, Unidad de Investigación Alimentaria, Bizkaiko Teknologi Parkea, Astondo Bidea - Edif. 609, 48160 Derio, Bizkaia, Spain
| | - Elisa Jimenez
- AZTI - Tecnalia, Unidad de Investigación Alimentaria, Bizkaiko Teknologi Parkea, Astondo Bidea - Edif. 609, 48160 Derio, Bizkaia, Spain
| | - Carmen G Sotelo
- Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
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16
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Sue MJ, Yeap SK, Omar AR, Tan SW. Application of PCR-ELISA in molecular diagnosis. BIOMED RESEARCH INTERNATIONAL 2014; 2014:653014. [PMID: 24971343 PMCID: PMC4058250 DOI: 10.1155/2014/653014] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 05/12/2014] [Indexed: 12/27/2022]
Abstract
Polymerase chain reaction-enzyme linked immunosorbent assay (PCR-ELISA) is an immunodetection method that can quantify PCR product directly after immobilization of biotinylated DNA on a microplate. This method, which detects nucleic acid instead of protein, is a much more sensitive method compared to conventional PCR method, with shorter analytical time and lower detection limit. Its high specificity and sensitivity, together with its semiquantitative ability, give it a huge potential to serve as a powerful detection tool in various industries such as medical, veterinary, and agricultural industries. With the recent advances in PCR-ELISA, it is envisaged that the assay is more widely recognized for its fast and sensitive detection limit which could improve overall diagnostic time and quality.
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Affiliation(s)
- Mei Jean Sue
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| | - Swee Keong Yeap
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| | - Abdul Rahman Omar
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| | - Sheau Wei Tan
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
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17
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Charoenvilaisiri S, Seepiban C, Bhunchoth A, Warin N, Luxananil P, Gajanandana O. Development of a multiplex RT-PCR-ELISA to identify four distinct species of tospovirus. J Virol Methods 2014; 202:54-63. [PMID: 24642237 DOI: 10.1016/j.jviromet.2014.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 03/05/2014] [Accepted: 03/07/2014] [Indexed: 11/26/2022]
Abstract
In this study, a multiplex RT-PCR-ELISA was developed to detect and differentiate four tospovirus species found in Thailand, namely Capsicum chlorosis virus (CaCV), Melon yellow spot virus (MYSV), Tomato necrotic ringspot virus (TNRV), and Watermelon silver mottle virus (WSMoV). In this system, nucleocapsid (N) gene fragments of four tospoviruses were simultaneously amplified and labeled with digoxigenin (DIG) in a single RT-PCR reaction using a pair of degenerate primers binding to the same conserved regions in all four tospovirus N genes. The DIG-labeled amplicons were distinguished into species by four parallel hybridizations to species-specific biotinylated probes in streptavidin-coated microtiter wells followed by ELISA detection using a peroxidase-conjugated anti-DIG antibody. Results indicated that the multiplex RT-PCR-ELISA assay could specifically identify each of these four tospoviruses without cross-reactivity between species or reactivity to healthy plant negative controls. Assay sensitivity was 10- to 1000-fold higher than conventional RT-PCR. When applied to naturally infected plants, all samples yielded concordant results between RT-PCR-ELISA and the reference RT-PCR. In conclusion, the multiplex RT-PCR-ELISA developed in this study has superior specificity, sensitivity, and high-throughput capacity compared to conventional RT-PCR and is an attractive alternative for the identification of different tospovirus species.
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Affiliation(s)
- Saengsoon Charoenvilaisiri
- Monoclonal Antibody Production Laboratory, Agricultural Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, Thailand Science Park, Pathumthani 12120, Thailand.
| | - Channarong Seepiban
- Monoclonal Antibody Production Laboratory, Agricultural Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, Thailand Science Park, Pathumthani 12120, Thailand
| | - Anjana Bhunchoth
- Plant Research Laboratory, Agricultural Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, Kamphaengsaen, Nakornpathom, Thailand
| | - Nuchnard Warin
- Plant Research Laboratory, Agricultural Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, Kamphaengsaen, Nakornpathom, Thailand
| | - Plearnpis Luxananil
- Microbial Cell Factory Laboratory, Bioresource Technology Unit, National Center for Genetic Engineering and Biotechnology, Thailand Science Park, Pathumthani 12120, Thailand
| | - Oraprapai Gajanandana
- Monoclonal Antibody Production Laboratory, Agricultural Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, Thailand Science Park, Pathumthani 12120, Thailand
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18
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Recombinase polymerase and enzyme-linked immunosorbent assay as a DNA amplification-detection strategy for food analysis. Anal Chim Acta 2014; 811:81-7. [DOI: 10.1016/j.aca.2013.12.017] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 12/05/2013] [Accepted: 12/09/2013] [Indexed: 11/30/2022]
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19
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Tian Q, Wong W, Xu Y, Chan Y, Ho HK, Pastorin G, Ang WH. Immobilisation of quantum dots by bio-orthogonal PCR amplification and labelling for direct gene detection and quantitation. Chem Commun (Camb) 2012; 48:5467-9. [PMID: 22540122 DOI: 10.1039/c2cc30680h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sensitive and versatile detection scheme based on quantum dot immobilisation on a solid support through bio-orthogonal PCR amplification and labelling has been developed for detection and quantification of gene targets in complex DNA mixtures.
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Affiliation(s)
- Quan Tian
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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Seo DJ, Tahk H, Lee KB, Lee MH, Son NR, Seo S, Cheon DS, Lee BH, Choi C. Detecting hepatitis E virus with a reverse transcription polymerase chain reaction enzyme-linked immunosorbent assay. FOOD AND ENVIRONMENTAL VIROLOGY 2012; 4:14-20. [PMID: 23412763 DOI: 10.1007/s12560-011-9073-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 11/29/2011] [Indexed: 06/01/2023]
Abstract
This study aimed to develop a specific and sensitive reverse transcription polymerase chain reaction enzyme-linked immunosorbent assay (RT-PCR-ELISA) for detecting hepatitis E virus (HEV). Eight sets of primers and biotinylated probes designed in the ORF2-ORF3 overlapping region of HEV were tested for sensitivity. The ability of nested reverse transcription polymerase chain reaction (RT-PCR) and RT-PCR-ELISA to detect HEV was compared. RT-PCR-ELISA was 10-100 times more sensitive than nested RT-PCR and could detect 0.01 ng/μl HEV in swine stool samples. In terms of specificity, RT-PCR-ELISA did not falsely detect HEV when other viruses such as hepatitis A virus, rotavirus, norovirus genotype I, norovirus genotype II, and Feline calicivirus were present. Therefore, RT-PCR-ELISA appears to be a sensitive and specific method for detecting HEV.
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Affiliation(s)
- Dong Joo Seo
- Department of Food and Nutrition, School of Food Science and Technology, Chung-Ang University, 72-1, Nae-ri, Daeduck-myun, Ansung-si, Kyounggi-do, 456-756, South Korea
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Tahk H, Lee KB, Lee MH, Seo DJ, Cheon DS, Choi C. Development of reverse transcriptase polymerase chain reaction enzyme-linked immunosorbent assay for the detection of hepatitis A virus in vegetables. Food Control 2012. [DOI: 10.1016/j.foodcont.2011.07.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tahk H, Lee MH, Lee KB, Cheon DS, Choi C. Development of duplex RT-PCR-ELISA for the simultaneous detection of hepatitis A virus and hepatitis E virus. J Virol Methods 2011; 175:137-40. [PMID: 21565222 DOI: 10.1016/j.jviromet.2011.04.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 04/19/2011] [Accepted: 04/27/2011] [Indexed: 11/26/2022]
Abstract
This study aimed to develop a specific and sensitive duplex reverse transcription polymerase chain reaction enzyme-linked immunosorbent assay (duplex RT-PCR-ELISA) for hepatitis A virus (HAV) and hepatitis E virus (HEV). Duplex RT-PCR-ELISA could detect and differentiate HAV and HEV with specific probes. When ELISA technique was used to detect probe-bound RT-PCR products, duplex RT-PCR-ELISA could detect as little as 0.1 ng/μL HAV and HEV from clinical samples. Human norovirus, enterovirus, poliovirus, murine norovirus and feline calicivirus were used for the specificity test; all were negative. Therefore duplex RT-PCR-ELISA can be used for the simultaneous detection of HAV and HEV in contaminated fecal samples.
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Affiliation(s)
- Hongmin Tahk
- School of Food Science and Technology, College of Natural Science, Chung-Ang University, Republic of Korea
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Costa S, Venturoli S, Mennini FS, Marcellusi A, Pesaresi M, Leo E, Falasca A, Marra E, Cricca M, Santini D, Zerbini M, Pelusi G. Population-based frequency assessment of HPV-induced lesions in patients with borderline Pap tests in the Emilia-Romagna Region: the PATER study. Curr Med Res Opin 2011; 27:569-78. [PMID: 21222568 DOI: 10.1185/03007995.2010.546730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND The PATER study assessed the frequency of high-risk (HR) and low-risk (LR) human papillomavirus (HPV) in HPV-induced lesions in patients with borderline cytology. METHODS This retrospective observational cohort study was designed to evaluate ASCUS patients detected through a local cervical cancer screening programme and referred to the Department of Gynaecology and Obstetrics at the S. Orsola-Malpighi University Hospital in Bologna, in the period between January 2000 and December 2007. RESULTS In 1047 patients aged 38.4 ± 9.6 years (range 23-65 years), 34.8% (n = 364) was positive for HR- or LR-HPV DNA. The mean age of women with HPV infection was significantly lower compared with the negative group (36.8 ± 9.4 versus 39.3 ± 9.6 years; p < 0.001). Overall, 357 (34.1%) women had cervical lesions: 279 (26.6%) had CIN1, 18 (1.7%) CIN2, and 60 (5.7%) CIN3+. HR-HPV genotype was detected in 83.3%, and 91.5% of patients with CIN2 and CIN3+ respectively. Among the 124 CIN1 HPV-positive women, 8.9% harboured LR-HPV genotypes, 80.6% HR-HPV and 10.5% a combination of HR- and LR-HPV. HPV-6 and 11 accounted for 19.4% of all HPV-positive CIN1 lesions. CONCLUSION Our study suggest that: in ASCUS patients over 40 years there is a low risk of positivity for HPV infection; the HPV DNA testing in patients with CIN3+ and a mean age close to 40 years is highly sensitive (98.3%) and acceptably specific (75.5%); the frequency of LR-HPV (alone or in combination with HR) in ASCUS cytology is not negligible. A tetravalent-based HPV vaccination alongside the screening programme would provide considerable clinical, organizational, and economic benefits.
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Affiliation(s)
- S Costa
- Department of Gynaecology and Obstetrics, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
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Gomes LI, Marques LHDS, Enk MJ, de Oliveira MC, Coelho PMZ, Rabello A. Development and evaluation of a sensitive PCR-ELISA system for detection of schistosoma infection in feces. PLoS Negl Trop Dis 2010; 4:e664. [PMID: 20421918 PMCID: PMC2857640 DOI: 10.1371/journal.pntd.0000664] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Accepted: 03/09/2010] [Indexed: 11/18/2022] Open
Abstract
Background A PCR-enzyme-linked immunosorbent assay (PCR-ELISA) was developed to overcome the need for sensitive techniques for the efficient diagnosis of Schistosoma infection in endemic settings with low parasitic burden. Methodology/Principal Findings This system amplifies a 121-base pair tandem repeat DNA sequence, immobilizes the resultant 5′ biotinylated product on streptavidin-coated strip-well microplates and uses anti-fluorescein antibodies conjugated to horseradish peroxidase to detect the hybridized fluorescein-labeled oligonucleotide probe. The detection limit of the Schistosoma PCR-ELISA system was determined to be 1.3 fg of S. mansoni genomic DNA (less than the amount found in a single cell) and estimated to be 0.15 S. mansoni eggs per gram of feces (fractions of an egg). The system showed good precision and genus specificity since the DNA target was found in seven Schistosoma DNA samples: S. mansoni, S. haematobium, S. bovis, S. intercalatum, S. japonicum, S. magrebowiei and S. rhodaini. By evaluating 206 patients living in an endemic area in Brazil, the prevalence of S. mansoni infection was determined to be 18% by examining 12 Kato-Katz slides (41.7 mg/smear, 500 mg total) of a single fecal sample from each person, while the Schistosoma PCR-ELISA identified a 30% rate of infection using 500-mg of the same fecal sample. When considering the Kato-Katz method as the reference test, artificial sensitivity and specificity rates of the PCR-ELISA system were 97.4% and 85.1%, respectively. The potential for estimating parasitic load by DNA detection in feces was assessed by comparing absorbance values and eggs per gram of feces, with a Spearman correlation coefficient of 0.700 (P<0.0001). Conclusions/Significance This study reports the development and field evaluation of a sensitive Schistosoma PCR-ELISA, a system that may serve as an alternative for diagnosing Schistosoma infection. Schistosomiasis is a neglected disease caused by worms of the genus Schistosoma. The transmission cycle requires contamination of bodies of water by parasite eggs present in excreta, specific snails as intermediate hosts and human contact with water. Fortunately, relatively safe and easily administrable drugs are available and, as the outcome of repeated treatment, a reduction of severe clinical forms and a decrease in the number of infected persons has been reported in endemic areas. The routine method for diagnosis is the microscopic examination but it fails when there are few eggs in the feces, as usually occurs in treated but noncured persons or in areas with low levels of transmission. This study reports the development of the PCR-ELISA system for the detection of Schistosoma DNA in human feces as an alternative approach to diagnose light infections. The system permits the enzymatic amplification of a specific region of the DNA from minute amounts of parasite material. Using the proposed PCR-ELISA approach for the diagnosis of a population in an endemic area in Brazil, 30% were found to be infected, as compared with the 18% found by microscopic fecal examination. Although the technique requires a complex laboratory infrastructure and specific funding it may be used by control programs targeting the elimination of schistosomiasis.
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Affiliation(s)
- Luciana Inácia Gomes
- Laboratório de Pesquisas Clínicas, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Minas Gerais, Brazil
| | - Letícia Helena dos Santos Marques
- Laboratório de Pesquisas Clínicas, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Minas Gerais, Brazil
| | - Martin Johannes Enk
- Laboratório de Esquistossomose, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Minas Gerais, Brazil
| | - Maria Cláudia de Oliveira
- Laboratório de Pesquisas Clínicas, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Minas Gerais, Brazil
| | - Paulo Marcos Zech Coelho
- Laboratório de Esquistossomose, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Minas Gerais, Brazil
| | - Ana Rabello
- Laboratório de Pesquisas Clínicas, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Minas Gerais, Brazil
- * E-mail:
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High-throughput two-step LNA real time PCR assay for the quantitative detection and genotyping of HPV prognostic-risk groups. J Clin Virol 2009; 45:304-10. [PMID: 19473874 DOI: 10.1016/j.jcv.2009.04.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 03/20/2009] [Accepted: 04/23/2009] [Indexed: 11/21/2022]
Abstract
BACKGROUND Human papillomavirus (HPV) infection is a necessary event in the development of cervical carcinoma. High risk (HR) HPV genotypes, however, may progress differentially from low grade lesions to malignancy. OBJECTIVES The necessity to genotype and quantify HPV-DNA in cervical screening programs, in the follow up post-surgical treatments and in monitoring the effectiveness of HPV vaccination programs, requires access to economical, high-throughput and flexible molecular technologies. STUDY DESIGN A high-throughput two-step LNA real time PCR assay was developed consisting of real time PCR reactions with fluorescent Locked Nucleic Acid (LNA) probes. The first step permits classification into three prognostic-risk groups of nine HR HPV genotypes (16, 18, 31, 33, 35, 45, 52, 56 and 58) most frequently found associated with cervical lesions in Europe. The second step allows us to genotype/quantify the HPV-DNA only when clinical, epidemiological or prophylactic aims exist. RESULTS The specificity, repeatability, detection and quantitation limit, and linearity of the assay were evaluated and appear to be in agreement with guidelines for the validation of analytical procedures. The overall genotype concordance on cervical samples between our assay and INNOLiPA test was 94% (k 0.83) indicating good agreement. CONCLUSIONS The two-step PCR assay can give much information relative to the predictive value of different HR HPV types and can quantify the genotype-specific viral load. In particular, its ability to detect and quantify nine HR HPV genotypes can help provide more efficient and successful patient care and may be useful for the monitoring of the efficacy of HPV vaccines.
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Chemiluminescent Quantitative Immunohistochemical p16INK4A Localization as a Marker for Cervical Intraepithelial Neoplasias. Int J Gynecol Pathol 2008; 27:575-81. [DOI: 10.1097/pgp.0b013e31817b8111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Huang RY, Chang HT, Lan CY, Pai TW, Wu CN, Ling CM, Chang MDT. Development and evaluation of a sensitive enzyme-linked oligonucleotide-sorbent assay for detection of polymerase chain reaction-amplified hepatitis C virus of genotypes 1-6. J Virol Methods 2008; 151:211-216. [PMID: 18565599 DOI: 10.1016/j.jviromet.2008.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2008] [Revised: 04/15/2008] [Accepted: 05/08/2008] [Indexed: 02/05/2023]
Abstract
A high-throughput polymerase chain reaction (PCR)-based enzyme-linked oligonucleotide-sorbent assay (ELOSA) was developed for use in the diagnostic testing of serum from patients who may be infected with different hepatitis C virus (HCV) genotypes. Twelve genotype-specific 5'-aminated DNA-coated probes were designed based on the variable 5'-untranslated region sequences of the HCV genotypes 1-6. Using 100 clinical serum samples, the performance of the PCR-ELOSA method was compared with Roche's COBAS Amplicor HCV Monitor V2.0 assay and the VERSANT HCV genotype assay (LiPA), and the overall agreement was 99% at the level of HCV genotypes with a detection range of 2.0 x 10(2) to 1.0 x 10(7)IU/ml for PCR-ELOSA. The PCR-ELOSA was more comprehensive as demonstrated by the fact that approximately 20% of the samples with different subtypes could be discriminated by this method but not by LiPA. In addition, the PCR-ELOSA system showed high accuracy (CV<or=6.36%) and even higher reproducibility (CV<or=5.55%). Thus, this novel PCR-ELOSA system provides a sensitive and versatile alternative to current HCV detection assays.
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Affiliation(s)
- Rong-Yuan Huang
- Institute of Molecular and Cellular Biology & Department of Life Science, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
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Musiani M, Gallinella G, Venturoli S, Zerbini M. Competitive PCR-ELISA protocols for the quantitative and the standardized detection of viral genomes. Nat Protoc 2008; 2:2511-9. [PMID: 17947993 DOI: 10.1038/nprot.2007.312] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Competitive PCR-ELISA combines competitive PCR with an ELISA to allow quantitative detection of PCR products. It is based on the inclusion of an internal standard competitor molecule that is designed to differ from the target by a short sequence of nucleotides. Once such a competitor molecule has been designed and constructed, target and competitor sequences are concurrently PCR-amplified, before hybridization to two different specific probes and determination of their respective OD values by ELISA. The target can be quantified in relation to a titration curve of different dilutions of the competitor. The competitor can alternatively be used at a unique optimal concentration to allow for standardized detection of the target sequence. PCR-ELISA can be performed in 1 d in laboratories without access to a real-time PCR thermocycler. This technique is applied in diagnostics to monitor the course of infections and drug efficacy. Competitive PCR-ELISA protocols for the quantitative and for the standardized detection of parvovirus B19 are detailed here as an example of the technique.
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Affiliation(s)
- Monica Musiani
- Department of Clinical and Experimental Medicine, Division of Microbiology, University of Bologna, Via Massarenti 9, Bologna 40138, Italy.
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