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Kalligosfyri PM, Tragoulias SS, Tsikas P, Lamprou E, Christopoulos TK, Kalogianni DP. Design and Validation of a Three-Dimensional Printer-Based System Enabling Rapid, Low-Cost Construction of the Biosensing Areas of Lateral Flow Devices for Immunoassays and Nucleic Acid Assays. Anal Chem 2024; 96:572-580. [PMID: 38150187 DOI: 10.1021/acs.analchem.3c04915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
The COVID-19 pandemic proved the great usefulness of lateral flow tests as self- and rapid tests. The rapid expansion of this field requires the design and validation of novel, affordable, and versatile technologies for the easy fabrication of a variety of lateral flow devices. In the present work, we have developed a new, simple, and cost-effective system for the dispensing of reagents on the membranes of lateral flow devices to be used for research purposes. The 3D printing technology is integrated, for the first time, with simple and inexpensive tools such as a technical pen and disposable pipet tips for the construction of the test and the control areas of the devices. We also used this system for the automated fabrication of spots on the membrane for multiplex analysis. The devices were applied for the detection of proteins/antibodies and single- and double-stranded DNA targets. Also, devices with multiple biosensing areas on the membrane were constructed for the simultaneous detection of different analytes. The proposed system is very simple, automated, and inexpensive and has provided rapid and reproducible construction of lateral flow devices. Compared to a commercially available automated dispenser, the devices showed similar detection capabilities and reproducibility in various real samples. Moreover, contrary to the existing dispensers, the proposed system does not require any gas or costly precision pumps and syringes for the deposition. In conclusion, the developed 3D printer-based system could be an extremely useful alternative for research laboratories for the construction of lateral flow devices of various assay configurations.
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Affiliation(s)
- Panagiota M Kalligosfyri
- Analytical/Bioanalytical Chemistry & Nanotechnology Group, Department of Chemistry, University of Patras, GR26504, Rio, 26504 Patras, Greece
| | - Sotirios S Tragoulias
- Analytical/Bioanalytical Chemistry & Nanotechnology Group, Department of Chemistry, University of Patras, GR26504, Rio, 26504 Patras, Greece
| | - Panagiotis Tsikas
- Analytical/Bioanalytical Chemistry & Nanotechnology Group, Department of Chemistry, University of Patras, GR26504, Rio, 26504 Patras, Greece
| | - Eleni Lamprou
- Analytical/Bioanalytical Chemistry & Nanotechnology Group, Department of Chemistry, University of Patras, GR26504, Rio, 26504 Patras, Greece
| | - Theodore K Christopoulos
- Analytical/Bioanalytical Chemistry & Nanotechnology Group, Department of Chemistry, University of Patras, GR26504, Rio, 26504 Patras, Greece
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICE-HT), Patras 26504, Greece
| | - Despina P Kalogianni
- Analytical/Bioanalytical Chemistry & Nanotechnology Group, Department of Chemistry, University of Patras, GR26504, Rio, 26504 Patras, Greece
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Metallic and Metal Oxides Nanoparticles for Sensing Food Pathogens—An Overview of Recent Findings and Future Prospects. MATERIALS 2022; 15:ma15155374. [PMID: 35955309 PMCID: PMC9370041 DOI: 10.3390/ma15155374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 07/30/2022] [Accepted: 08/03/2022] [Indexed: 02/01/2023]
Abstract
Nowadays, special importance is given to quality control and food safety. Food quality currently creates significant problems for the industry and implicitly for consumers and society. The effects materialize in economic losses, alterations of the quality and organoleptic properties of the commercial products, and, last but not least, they constitute risk factors for the consumer’s health. In this context, the development of analytical systems for the rapid determination of the sanitary quality of food products by detecting possible pathogenic microorganisms (such as Escherichia coli or Salmonella due to the important digestive disorders that they can cause in many consumers) is of major importance. Using efficient and environmentally friendly detection systems for identification of various pathogens that modify food matrices and turn them into food waste faster will also improve agri-food quality throughout the food chain. This paper reviews the use of metal nanoparticles used to obtain bio nanosensors for the purpose mentioned above. Metallic nanoparticles (Au, Ag, etc.) and their oxides can be synthesized by several methods, such as chemical, physical, physico-chemical, and biological, each bringing advantages and disadvantages in their use for developing nanosensors. In the “green chemistry” approach, a particular importance is given to the metal nanoparticles obtained by phytosynthesis. This method can lead to the development of good quality nanoparticles, at the same time being able to use secondary metabolites from vegetal wastes, as such providing a circular economy character. Considering these aspects, the use of phytosynthesized nanoparticles in other biosensing applications is also presented as a glimpse of their potential, which should be further explored.
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3
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Jauset-Rubio M, Ortiz M, O'Sullivan CK. Solid-Phase Primer Elongation Using Biotinylated dNTPs for the Detection of a Single Nucleotide Polymorphism from a Fingerprick Blood Sample. Anal Chem 2021; 93:14578-14585. [PMID: 34704755 PMCID: PMC8581964 DOI: 10.1021/acs.analchem.1c03419] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Isothermal recombinase polymerase amplification-based solid-phase primer extension is used for the optical detection of a hypertrophic cardiomyopathy associated single nucleotide polymorphism (SNP) in a fingerprick blood sample. The assay exploits four thiolated primers which have the same sequences with the exception of the 3'-terminal base. Target DNA containing the SNP site hybridizes to all four of the immobilized probes, with primer extension only taking place from the primer containing the terminal base that is complementary to the SNP under interrogation. Biotinylated deoxynucleotide triphosphates are used in the primer extension, allowing postextension addition of streptavidin-poly-horseradish peroxidase to bind to the incorporated biotinylated dNTPs. The signal generated following substrate addition can then be measured optically. The percentage of biotinylated dNTPs and the duration of primer extension is optimized and the system applied to the identification of a SNP in a fingerprick blood sample. A methodology of thermal lysis using a 1 in 5 dilution of the fingerprick blood sample prior to application of 95 °C for 30 s is used to extract genomic DNA, which is directly used as a template for solid-phase primer extension on microtiter plates, followed by optical detection. The SNP in the fingerprick sample was identified and its identity corroborated using ion torrent next generation sequencing. Ongoing work is focused on extension to the multiplexed detection of SNPs in fingerprick and other biological samples.
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Affiliation(s)
- Miriam Jauset-Rubio
- INTERFIBIO Research Group, Departament d'Enginyeria Química, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain
| | - Mayreli Ortiz
- INTERFIBIO Research Group, Departament d'Enginyeria Química, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain
| | - Ciara K O'Sullivan
- INTERFIBIO Research Group, Departament d'Enginyeria Química, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain.,InstitucióCatalana de Recerca i Estudis Avancats (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
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4
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Hajialyani M, Hosseinzadeh L, Wu JJ. Microfluidics-Integrated Sensors toward Rapid Detection of Single Nucleotide Variations. ACS OMEGA 2021; 6:24297-24303. [PMID: 34604613 PMCID: PMC8482391 DOI: 10.1021/acsomega.1c02563] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Indexed: 05/03/2023]
Abstract
Rapid detection of single nucleotide variations (SNVs) is of critical importance to early diagnosis of several diseases and the prediction of diverse responses to a specific treatment. Based on the information published in the literature, discrimination of SNVs is a developing area of study with great research enthusiasm and is also an area that can benefit from microfluidics-integrated designs. This review provides a brief overview of different microfluidics-based strategies for rapid detection of SNVs and mismatched bases. Sensors based on various microfluidic formats, such as paper-based microfluidic biosensors, droplet-based microfluidic systems, and magnetic bead-based microfluidic biosensors, have been discussed with respect to their specific pros and cons for SNV detection. These systems have shown promise for distributed on-site diagnostics in personalized medicine.
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Affiliation(s)
- Marziyeh Hajialyani
- Department
of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, Tennessee 37996-4519, United States
| | - Leila Hosseinzadeh
- Pharmaceutical
Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, 6715847141 Kermanshah, Iran
| | - Jie Jayne Wu
- Department
of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, Tennessee 37996-4519, United States
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5
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Rosas-Vara D, Molina-Contreras JR, Villalobos-Piña F, Zenteno JC, Buentello-Volante B, Chacon-Camacho OF, Ayala-Ramírez R, Frausto-Reyes C, Hernández-Martínez R, Ríos-Corripio MA. Point mutation in the TGFBI gene: surface-enhanced infrared absorption spectroscopy (SEIRAS) as an analytical method. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00948-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Yadav N, Chhillar AK, Rana JS. Detection of pathogenic bacteria with special emphasis to biosensors integrated with AuNPs. SENSORS INTERNATIONAL 2020. [DOI: 10.1016/j.sintl.2020.100028] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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7
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Li J, Pollak NM, Macdonald J. Multiplex Detection of Nucleic Acids Using Recombinase Polymerase Amplification and a Molecular Colorimetric 7-Segment Display. ACS OMEGA 2019; 4:11388-11396. [PMID: 31460243 PMCID: PMC6682049 DOI: 10.1021/acsomega.9b01097] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/12/2019] [Indexed: 05/06/2023]
Abstract
Nucleic acid analysis has become highly relevant for point-of-care (POC) diagnostics since the advent of isothermal amplification methods that do not require thermal cycling. In particular, recombinase polymerase amplification (RPA) combined with lateral flow detection offers a rapid and simple solution for field-amenable low-resource nucleic acid testing. Expanding POC nucleic acid tests for the detection of multiple analytes is vital to improve diagnostic efficiency because increased multiplexing capacity enables higher information density combined with reduced assay time and costs. Here, we investigate expanding RPA POC detection by identifying a generic multiplex RPA format that can be combined with a generic multiplex lateral flow device (LFD) to enable binary and molecular encoding for the compaction of diagnostic data. This new technology relies on the incorporation of molecular labels to differentiate nucleic acid species spatially on a lateral flow membrane. In particular, we identified additional five molecular labels that can be incorporated during the RPA reaction for subsequent coupling with LFD detection. Combined with two previously demonstrated successful labels, we demonstrate potential to enable hepta-plex detection of RPA reactions coupled to multiplex LFD detection. When this hepta-plex detection is combined with binary and molecular encoding, an intuitive 7-segment output display can be produced. We note that in all experiments, we used an identical DNA template, except for the 5' label on the forward primer, to eliminate any effects of nucleic acid sequence amplification bias. Our proof-of-concept technology demonstration is highly relevant for developing information-compact POC diagnostics where space and time are premium commodities.
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Affiliation(s)
- Jia Li
- Genecology
Research Centre, School of Science and Engineering, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy
Downs, Queensland 4556, Australia
| | - Nina M. Pollak
- Genecology
Research Centre, School of Science and Engineering, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy
Downs, Queensland 4556, Australia
- CSIRO
Synthetic Biology Future Science Platform, Canberra, Australian Capital Territory 2601, Australia
| | - Joanne Macdonald
- Genecology
Research Centre, School of Science and Engineering, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy
Downs, Queensland 4556, Australia
- Division
of Experimental Therapeutics, Columbia University, 650 W 168th Street, New York, New York 10032, United States
- E-mail: , .
Phone: +61 7 5456 5944
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8
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Paper-based device providing visual genetic signatures for precision medicine: application to breast cancer. Anal Bioanal Chem 2019; 411:3769-3776. [DOI: 10.1007/s00216-019-01838-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/14/2019] [Accepted: 04/09/2019] [Indexed: 12/14/2022]
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9
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Kilic T, Erdem A, Ozsoz M, Carrara S. microRNA biosensors: Opportunities and challenges among conventional and commercially available techniques. Biosens Bioelectron 2018; 99:525-546. [DOI: 10.1016/j.bios.2017.08.007] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 08/01/2017] [Accepted: 08/04/2017] [Indexed: 12/19/2022]
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10
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Kouloulia S, Lazaridou M, Christopoulos TK, Ioannou PC. Multi-allele dipstick assay for visual genotyping of four novel SIRT1 gene variant alleles as candidate biomarkers for sporadic Parkinson disease. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2252-x] [Citation(s) in RCA: 1] [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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11
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Li J, Macdonald J. Multiplexed lateral flow biosensors: Technological advances for radically improving point-of-care diagnoses. Biosens Bioelectron 2016; 83:177-92. [DOI: 10.1016/j.bios.2016.04.021] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 12/22/2022]
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12
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Ríos-Corripio MA, Arcila-Lozano LS, Garcia-Perez BE, Jaramillo-Flores ME, Hernández-Pérez AD, Carlos-Martínez A, Rosales-Perez M, Rojas-López M. Fluorescent Gold Nanoparticle-Based Bioconjugate for the Detection ofSalmonella. ANAL LETT 2016. [DOI: 10.1080/00032719.2015.1128944] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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13
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Fountoglou N, Petropoulou M, Iliadi A, Christopoulos TK, Ioannou PC. Τwo-panel molecular testing for genetic predisposition for thrombosis using multi-allele visual biosensors. Anal Bioanal Chem 2016; 408:1943-52. [DOI: 10.1007/s00216-016-9310-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/25/2015] [Accepted: 01/04/2016] [Indexed: 01/29/2023]
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14
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Amvrosiadou M, Petropoulou M, Poulou M, Tzetis M, Kanavakis E, Christopoulos TK, Ioannou PC. Multi-allele genotyping platform for the simultaneous detection of mutations in the Wilson disease related ATP7B gene. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1006:201-208. [PMID: 26580967 DOI: 10.1016/j.jchromb.2015.10.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 10/20/2015] [Accepted: 10/23/2015] [Indexed: 11/30/2022]
Abstract
Wilson's disease is an inherited disorder of copper transport in the hepatocytes with a wide range of genotype and phenotype characteristics. Mutations in the ATP7B gene are responsible for the disease. Approximately, over 500 mutations in the ATP7B gene have been described to date. We report a method for the simultaneous detection of the ten most common ATP7B gene mutations in Greek patients. The method comprises 3 simple steps: (i) multiplex PCR amplification of fragments in the ATP7B gene flanking the mutations (ii) multiplex primer extension reaction of the unpurified amplification products using allele-specific primers and (iii) visual detection of the primer extension reaction products within minutes by means of dry-reagent multi-allele dipstick assay using anti-biotin conjugated gold nanoparticles. Optimization studies on the efficiency and specificity of the PEXT reaction were performed. The method was evaluated by genotyping 46 DNA samples of known genotype and 34 blind samples. The results were fully concordant with those obtained by reference methods. The method is simple, rapid, cost-effective and it does not require specialized instrumentation or highly qualified personnel.
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Affiliation(s)
- Maria Amvrosiadou
- Laboratory of Analytical Chemistry, Department of Chemistry, Athens University, Athens 15771, Greece
| | - Margarita Petropoulou
- Laboratory of Analytical Chemistry, Department of Chemistry, Athens University, Athens 15771, Greece
| | - Myrto Poulou
- Laboratory of Medical Genetics, Athens University, Athens 11527, Greece
| | - Maria Tzetis
- Laboratory of Medical Genetics, Athens University, Athens 11527, Greece
| | | | - Theodore K Christopoulos
- Department of Chemistry, University of Patras, Patras 26500, Greece; Foundation for Research and Technology Hellas, Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT), Patras 26504, Greece
| | - Penelope C Ioannou
- Laboratory of Analytical Chemistry, Department of Chemistry, Athens University, Athens 15771, Greece.
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15
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Aliofkhazraei M, Pedrosa P, Carlos FF, Veigas B, Baptista PV. Gold Nanoparticles for DNA/RNA-Based Diagnostics. HANDBOOK OF NANOPARTICLES 2015. [PMCID: PMC7123017 DOI: 10.1007/978-3-319-15338-4_31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The remarkable physicochemical properties of gold nanoparticles (AuNPs) have prompted development in exploring biomolecular interactions with AuNPs-containing systems, pursuing biomedical applications in diagnostics. Among these applications, AuNPs have been remarkably useful for the development of DNA/RNA detection and characterization systems for diagnostics, including systems suitable for point of need. Here, emphasis will be on available molecular detection schemes of relevant pathogens and their molecular characterization, genomic sequences associated with medical conditions (including cancer), mutation and polymorphism identification, and the quantification of gene expression.
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16
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Terao Y, Takeshita K, Nishiyama Y, Morishita N, Matsumoto T, Morimatsu F. Promising Nucleic Acid Lateral Flow Assay Plus PCR for Shiga Toxin-Producing Escherichia coli. J Food Prot 2015; 78:1560-8. [PMID: 26219371 DOI: 10.4315/0362-028x.jfp-14-495] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Shiga toxin (Stx)-producing Escherichia coli (STEC) is a frequent cause of foodborne infections, and methods for rapid and reliable detection of STEC are needed. A nucleic acid lateral flow assay (NALFA) plus PCR was evaluated for detecting STEC after enrichment. When cell suspensions of 45 STEC strains, 14 non-STEC strains, and 13 non-E. coli strains were tested with the NALFA plus PCR, all of the STEC strains yielded positive results, and all of the non-STEC and non-E. coli strains yielded negative results. The lower detection limit for the STEC strains ranged from 0.1 to 1 pg of genomic DNA (about 20 to 200 CFU) per test, and the NALFA plus PCR was able to detect Stx1- and Stx2-producing E. coli strains with similar sensitivities. The ability of the NALFA plus PCR to detect STEC in enrichment cultures of radish sprouts, tomato, raw ground beef, and beef liver inoculated with 10-fold serially diluted STEC cultures was comparable to that of a real-time PCR assay (at a level of 100 to 100,000 CFU/ml in enrichment culture). The bacterial inoculation test in raw ground beef revealed that the lower detection limit of the NALFA plus PCR was also comparable to that obtained with a real-time PCR assay that followed the U.S. Department of Agriculture guidelines. Although further evaluation is required, these results suggest that the NALFA plus PCR is a specific and sensitive method for detecting STEC in a food manufacturing plant.
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Affiliation(s)
- Yoshitaka Terao
- R&D Center, NH Foods Ltd., 3-3 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan.
| | - Kana Takeshita
- R&D Center, NH Foods Ltd., 3-3 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Yasutaka Nishiyama
- R&D Center, NH Foods Ltd., 3-3 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Naoki Morishita
- R&D Center, NH Foods Ltd., 3-3 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Takashi Matsumoto
- R&D Center, NH Foods Ltd., 3-3 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Fumiki Morimatsu
- R&D Center, NH Foods Ltd., 3-3 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
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Lateral flow devices for nucleic acid analysis exploiting quantum dots as reporters. Anal Chim Acta 2015; 864:48-54. [PMID: 25732426 DOI: 10.1016/j.aca.2015.01.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 01/08/2015] [Accepted: 01/14/2015] [Indexed: 12/16/2022]
Abstract
There is a growing interest in the development of biosensors in the form of simple lateral flow devices that enable visual detection of nucleic acid sequences while eliminating several steps required for pipetting, incubation and washing out the excess of reactants. In this work, we present the first dipstick-type nucleic acid biosensors based on quantum dots (QDs) as reporters. The biosensors enable sequence confirmation of the target DNA by hybridization and simple visual detection of the emitted fluorescence under a UV lamp. The 'diagnostic' membrane of the biosensor contains a test zone (TZ) and a control zone (CZ). The CZ always fluoresces in order to confirm the proper function of the biosensor. Fluorescence is emitted from the TZ, only when the specific nucleic acid sequence is present. We have developed two general types of QD-based nucleic acid biosensors, namely, Type I and Type II, in which the TZ consists of either immobilized streptavidin (Type I) or immobilized oligodeoxynucleotides (Type II). The control zone consists of immobilized biotinylated albumin. No purification steps are required prior to the application of the DNA sample on the strip. The QD-based nucleic acid biosensors performed accurately and reproducibly when applied to (a) the visual detection of PCR amplification products and (b) visual genotyping of single nucleotide polymorphisms (SNPs) in human genomic DNA from clinical samples. As low as 1.5 fmol of double-stranded DNA were clearly detected by naked eye and the dynamic range extended to 200 fmol. The %CV were estimated to be 4.3-8.2.
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18
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Jang EK, Yang M, Pack SP. Highly-efficient T4 DNA ligase-based SNP analysis using a ligation fragment containing a modified nucleobase at the end. Chem Commun (Camb) 2015; 51:13090-3. [DOI: 10.1039/c5cc03761a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A highly accurate ligase-based SNP analysis was developed by using modified base-end downstream ligation fragments as detection probes, which can clearly distinguish C/T SNP types without any “false-positive” results.
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Affiliation(s)
- Eui Kyoung Jang
- Department of Biotechnology and Bioinformatics
- Korea University
- Jochiwon
- Korea
| | - Munhee Yang
- Department of Psychology
- University of Texas
- Austin
- USA
| | - Seung Pil Pack
- Department of Biotechnology and Bioinformatics
- Korea University
- Jochiwon
- Korea
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19
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Siddiquee S, Rovina K, Yusof NA, Rodrigues KF, Suryani S. Nanoparticle-enhanced electrochemical biosensor with DNA immobilization and hybridization of Trichoderma harzianum gene. SENSING AND BIO-SENSING RESEARCH 2014. [DOI: 10.1016/j.sbsr.2014.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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20
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Rapid and sensitive PCR-dipstick DNA chromatography for multiplex analysis of the oral microbiota. BIOMED RESEARCH INTERNATIONAL 2014; 2014:180323. [PMID: 25485279 PMCID: PMC4251647 DOI: 10.1155/2014/180323] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/03/2014] [Accepted: 09/08/2014] [Indexed: 02/05/2023]
Abstract
A complex of species has been associated with dental caries under the ecological hypothesis. This study aimed to develop a rapid, sensitive PCR-dipstick DNA chromatography assay that could be read by eye for multiplex and semiquantitative analysis of plaque bacteria. Parallel oligonucleotides were immobilized on a dipstick strip for multiplex analysis of target DNA sequences of the caries-associated bacteria, Streptococcus mutans, Streptococcus sobrinus, Scardovia wiggsiae, Actinomyces species, and Veillonella parvula. Streptavidin-coated blue-colored latex microspheres were to generate signal. Target DNA amplicons with an oligonucleotide-tagged terminus and a biotinylated terminus were coupled with latex beads through a streptavidin-biotin interaction and then hybridized with complementary oligonucleotides on the strip. The accumulation of captured latex beads on the test and control lines produced blue bands, enabling visual detection with the naked eye. The PCR-dipstick DNA chromatography detected quantities as low as 100 pg of DNA amplicons and demonstrated 10- to 1000-fold higher sensitivity than PCR-agarose gel electrophoresis, depending on the target bacterial species. Semiquantification of bacteria was performed by obtaining a series of chromatograms using serial 10-fold dilution of PCR-amplified DNA extracted from dental plaque samples. The assay time was less than 3 h. The semiquantification procedure revealed the relative amounts of each test species in dental plaque samples, indicating that this disposable device has great potential in analysis of microbial composition in the oral cavity and intestinal tract, as well as in point-of-care diagnosis of microbiota-associated diseases.
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21
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Detection of single-nucleotide polymorphisms in Plasmodium falciparum by PCR primer extension and lateral flow immunoassay. Antimicrob Agents Chemother 2014; 59:365-71. [PMID: 25367901 DOI: 10.1128/aac.03395-14] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The resistance of Plasmodium falciparum to some antimalarial drugs is linked to single-nucleotide polymorphisms (SNPs). Currently, there are no methods for the identification of resistant parasites that are sufficiently simple, cheap, and fast enough to be performed at point-of-care, i.e., in local hospitals where drugs are prescribed. Primer extension methods (PEXT) were developed to identify 4 SNPs in P. falciparum positioned at amino acids 86, 184, and 1246 of the P. falciparum multidrug resistance 1 gene (pfmdr1) and amino acid 76 of the chloroquine resistance transporter gene (pfcrt). The PEXT products were visualized by a nucleic acid lateral flow immunoassay (NALFIA) with carbon nanoparticles as the detection labels. PCR-PEXT-NALFIAs showed good correlation to the reference methods, quantitative PCR (qPCR) or direct amplicon sequence analysis, in an initial open-label evaluation with 17 field samples. The tests were further evaluated in a blind study design in a set of 150 patient isolates. High specificities of 98 to 100% were found for all 4 PCR-PEXT genotyping assays. The sensitivities ranged from 75% to 100% when all PEXT-positive tests were considered. A number of samples with a low parasite density were successfully characterized by the reference methods but failed to generate a result in the PCR-PEXT-NALFIA, particularly those samples with microscopy-negative subpatent infections. This proof-of principle study validates the use of PCR-PEXT-NALFIA for the detection of resistance-associated mutations in P. falciparum, particularly for microscopy-positive infections. Although it requires a standard thermal cycler, the procedure is cheap and rapid and thus a potentially valuable tool for point-of-care detection in developing countries.
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Nouira W, Maaref A, Elaissari H, Vocanson F, Siadat M, Jaffrezic-Renault N. Enhanced response of a proteinase K-based conductometric biosensor using nanoparticles. SENSORS 2014; 14:13298-307. [PMID: 25057139 PMCID: PMC4168465 DOI: 10.3390/s140713298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/17/2014] [Accepted: 07/17/2014] [Indexed: 01/26/2023]
Abstract
Proteinases are involved in a multitude of important physiological processes, such as protein metabolism. For this reason, a conductometric enzyme biosensor based on proteinase K was developed using two types of nanoparticles (gold and magnetic). The enzyme was directly adsorbed on negatively charged nanoparticles and then deposited and cross-linked on a planar interdigitated electrode (IDE). The biosensor was characterized with bovine serum albumin (BSA) as a standard protein. Higher sensitivity was obtained using gold nanoparticles. The linear range for BSA determination was then from 0.5 to 10 mg/L with a maximum response of 154 μs. These results are greater than that found without any nanoparticles (maximum response of 10 μs). The limit of detection (LOD) was 0.3 mg/L. An inter-sensor reproducibility of 3.5% was obtained.
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Affiliation(s)
- Wided Nouira
- Institute of Analytical Sciences, University of Lyon, La Doua Street, 5, 69622 Villeurbanne, France.
| | - Abderrazak Maaref
- Laboratory of Interfaces and Advanced Materials, University of Monastir, Avenue of Environment, 5019 Monastir, Tunisia.
| | - Hamid Elaissari
- University of Lyon, CNRS, UMR 5007, LAGEP-CPE, 43 Bd. 11 Novembre 1918, Villeurbanne, France.
| | - Francis Vocanson
- Hubert Curien Laboratory, University of Lyon, F-42023 Saint-Etienne, France.
| | - Maryam Siadat
- LASC, ISEA, University of Metz, 7 Marconi Street, 57070 Metz, France.
| | - Nicole Jaffrezic-Renault
- Institute of Analytical Sciences, University of Lyon, La Doua Street, 5, 69622 Villeurbanne, France.
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Nouira W, Maaref A, Elaissari H, Vocanson F, Siadat M, Jaffrezic-Renault N. Comparative study of conductometric glucose biosensor based on gold and on magnetic nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:298-303. [DOI: 10.1016/j.msec.2012.08.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 07/27/2012] [Accepted: 08/29/2012] [Indexed: 01/26/2023]
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Abstract
During the past decade many new molecular methods for DNA and RNA analysis have emerged. The most popular thus far have been SSCP, HET, CMC, DGGE, RFLP or ASA, which have now been replaced by methods that are more cost effective and less time consuming. Real-time amplification techniques and particularly those with the capacity of multiplexing have become commonly used in laboratory practice. Novel screening methods enable the very rapid examination of large patients series. Use of liquid handling robotics applied to the isolation of DNA or RNA, the normalisation of sample concentration, and standardization of target amplification by PCR have also contributed to a reduced risk of sample contamination and have resulted in laboratory analysis being easier and faster. The aim of this study is the introduction of a few modern techniques, most commonly used in detection of genetic predisposition to cancer.
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Huang H, Jin L, Yang X, Song Q, Zou B, Jiang S, Sun L, Zhou G. An internal amplification control for quantitative nucleic acid analysis using nanoparticle-based dipstick biosensors. Biosens Bioelectron 2012. [PMID: 23208096 DOI: 10.1016/j.bios.2012.10.078] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Quantitative analysis of virus nucleic acids is essential for monitoring the efficacy of medical treatment based on the copy numbers of virus's RNA or DNA in blood. To quantitatively detect virus nucleic acids in blood, here an internal amplification control (IAC) coupled with a nanoparticle-based DNA biosensor was proposed. The IACs with a specific sequence were designed and spiked into serum before nucleic acids extraction. Sequences of the IACs and the targets only differ in the base order of one PCR priming site; thus, the IACs and the targets are identical in Tm, giving the same amplification efficiency during PCR. To visually detect amplicons, a dipstick biosensor based on streptavidin-functionalized nanoparticles is employed. By comparing color densities of a test zone with an IAC zone on the biosensor, the content of the target in serum can be semi-quantitatively analyzed. This approach has achieved the detection of HBV DNA at approximately 100 copies of the pathogen load. The feasibility of this method is demonstrated by successful semi-quantification of pathogen load in 30 clinical samples from HBV-infected patients. These data indicate that the introduction of an IAC and nanoparticle-based dipstick-type biosensor could be a powerful tool in point of care testing (POCT).
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Affiliation(s)
- Huan Huang
- Huadong Research Institute for Medicine and Biotechnics, Nanjing 210002, China
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Ang GY, Yu CY, Yean CY. Ambient temperature detection of PCR amplicons with a novel sequence-specific nucleic acid lateral flow biosensor. Biosens Bioelectron 2012; 38:151-6. [PMID: 22705404 DOI: 10.1016/j.bios.2012.05.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 05/08/2012] [Accepted: 05/15/2012] [Indexed: 12/17/2022]
Abstract
In the field of diagnostics, molecular amplification targeting unique genetic signature sequences has been widely used for rapid identification of infectious agents, which significantly aids physicians in determining the choice of treatment as well as providing important epidemiological data for surveillance and disease control assessment. We report the development of a rapid nucleic acid lateral flow biosensor (NALFB) in a dry-reagent strip format for the sequence-specific detection of single-stranded polymerase chain reaction (PCR) amplicons at ambient temperature (22-25°C). The NALFB was developed in combination with a linear-after-the-exponential PCR assay and the applicability of this biosensor was demonstrated through detection of the cholera toxin gene from diarrheal-causing toxigenic Vibrio cholerae. Amplification using the advanced asymmetric PCR boosts the production of fluorescein-labeled single-stranded amplicons, allowing capture probes immobilized on the NALFB to hybridize specifically with complementary targets in situ on the strip. Subsequent visual formation of red lines is achieved through the binding of conjugated gold nanoparticles to the fluorescein label of the captured amplicons. The visual detection limit observed with synthetic target DNA was 0.3 ng and 1 pg with pure genomic DNA. Evaluation of the NALFB with 164 strains of V. cholerae and non-V. cholerae bacteria recorded 100% for both sensitivity and specificity. The whole procedure of the low-cost NALFB, which is performed at ambient temperature, eliminates the need for preheated buffers or additional equipment, greatly simplifying the protocol for sequence-specific PCR amplicon analysis.
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Affiliation(s)
- Geik Yong Ang
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia.
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Papanikos F, Iliadi A, Petropoulou M, Ioannou PC, Christopoulos TK, Kanavakis E, Traeger-Synodinos J. Lateral flow dipstick test for genotyping of 15 beta-globin gene (HBB) mutations with naked-eye detection. Anal Chim Acta 2012; 727:61-6. [PMID: 22541824 DOI: 10.1016/j.aca.2012.03.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 02/29/2012] [Accepted: 03/26/2012] [Indexed: 01/16/2023]
Abstract
For definitive diagnosis of thalassemia carriers and patients, as well as for prenatal diagnosis, genotype analysis is of fundamental importance. We report a dry-reagent, lateral flow dipstick test that enables visual genotyping (detection by naked eye) of 15 mutations common in Mediterranean populations in the beta-globin gene (HBB). The method comprises 3 simple steps: (i) PCR amplification of a single 1896 bp segment of the beta globin gene flanking all 15 mutations; (ii) a multiplex (10-plex and/or 30-plex) primer extension reaction of the unpurified amplification product using allele-specific primers. Biotin is incorporated in the extended product; (iii) a dry-reagent multi-allele (10-plex) dipstick assay for visual detection of the primer extension reaction products within minutes. The total time required for PCR, primer extension reaction and the dipstick assay is ~2 h. The method was evaluated by genotyping 45 DNA samples of known genotypes and 54 blind samples. The results were fully concordant with reference methods. The method is simple, rapid, and cost-effective. Detection by the dipstick assay does not require specialized instrumentation or highly qualified personnel. The proposed method could be a particularly useful tool in laboratories with limited resources and a basis for point-of-care diagnostics especially in combination with PCR amplification from whole blood.
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Affiliation(s)
- Frantzeskos Papanikos
- Laboratory of Analytical Chemistry, Department of Chemistry, Athens University, Athens 15771, Greece
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Noble metal nanoparticles for biosensing applications. SENSORS 2012; 12:1657-87. [PMID: 22438731 PMCID: PMC3304133 DOI: 10.3390/s120201657] [Citation(s) in RCA: 318] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 01/29/2012] [Accepted: 02/02/2012] [Indexed: 12/24/2022]
Abstract
In the last decade the use of nanomaterials has been having a great impact in biosensing. In particular, the unique properties of noble metal nanoparticles have allowed for the development of new biosensing platforms with enhanced capabilities in the specific detection of bioanalytes. Noble metal nanoparticles show unique physicochemical properties (such as ease of functionalization via simple chemistry and high surface-to-volume ratios) that allied with their unique spectral and optical properties have prompted the development of a plethora of biosensing platforms. Additionally, they also provide an additional or enhanced layer of application for commonly used techniques, such as fluorescence, infrared and Raman spectroscopy. Herein we review the use of noble metal nanoparticles for biosensing strategies—from synthesis and functionalization to integration in molecular diagnostics platforms, with special focus on those that have made their way into the diagnostics laboratory.
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Nguyen TT, Sly KL, Conboy JC. Comparison of the Energetics of Avidin, Streptavidin, NeutrAvidin, and Anti-Biotin Antibody Binding to Biotinylated Lipid Bilayer Examined by Second-Harmonic Generation. Anal Chem 2011; 84:201-8. [DOI: 10.1021/ac202375n] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Trang T. Nguyen
- Department of Chemistry, University of Utah, 315 South
1400 East, Rm. 2020, Salt Lake City, Utah 84112, United States
| | - Krystal L. Sly
- Department of Chemistry, University of Utah, 315 South
1400 East, Rm. 2020, Salt Lake City, Utah 84112, United States
| | - John C. Conboy
- Department of Chemistry, University of Utah, 315 South
1400 East, Rm. 2020, Salt Lake City, Utah 84112, United States
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Quadruple-allele dipstick test for simultaneous visual genotyping of A896G (Asp299Gly) and C1196T (Thr399Ile) polymorphisms in the toll-like receptor-4 gene. Clin Chim Acta 2011; 412:1968-72. [DOI: 10.1016/j.cca.2011.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 06/27/2011] [Accepted: 07/02/2011] [Indexed: 12/15/2022]
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A graphene-based platform for single nucleotide polymorphism (SNP) genotyping. Biosens Bioelectron 2011; 26:4213-6. [DOI: 10.1016/j.bios.2011.03.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 03/20/2011] [Accepted: 03/27/2011] [Indexed: 01/17/2023]
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Elenis DS, Ioannou PC, Christopoulos TK. A nanoparticle-based sensor for visual detection of multiple mutations. NANOTECHNOLOGY 2011; 22:155501. [PMID: 21389581 DOI: 10.1088/0957-4484/22/15/155501] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Disposable dipstick-type DNA biosensors in the form of lateral flow strips are particularly useful for genotyping in a small laboratory or for field testing due to their simplicity, low cost and portability. Their unique advantage is that they enable visual detection in minutes without the use of instruments. In addition, the dry-reagent format minimizes the pipetting, incubation and washing steps. In this work, we significantly enhance the multiplexing capabilities of lateral flow strip biosensors without compromising their simplicity. Multiplex genotyping is carried out by polymerase chain reaction (PCR) followed by a single primer extension reaction for all target alleles, in which a primer is extended and biotin is incorporated only if it is perfectly complementary to the target. Multiallele detection is achieved by multiple test spots on the membrane of the sensor, each comprising a suspension of polystyrene microspheres functionalized with capture probes. The products of the primer extension reaction hybridize, through specific sequence tags, to the capture probes and are visualized by using antibiotin-conjugated gold nanoparticles. This design enables accommodation of multiple spots in a small area because the microspheres are trapped in the fibres of the membrane and remain fixed in site without any diffusion. Furthermore, the detectability is improved because the hybrids are exposed on the surface of the trapped microspheres rather than inside the pores of the membrane. We demonstrate the specificity and performance of the biosensor for multiallele genotyping.
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Le Goff GC, Blum LJ, Marquette CA. Enhanced Colorimetric Detection on Porous Microarrays Using in Situ Substrate Production. Anal Chem 2011; 83:3610-5. [DOI: 10.1021/ac200306d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Gaelle C. Le Goff
- Equipe Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1, CNRS 5246 ICBMS, Bâtiment CPE-43, bd du 11 novembre 1918-69622 Villeurbanne, Cedex, France
| | - Loïc J. Blum
- Equipe Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1, CNRS 5246 ICBMS, Bâtiment CPE-43, bd du 11 novembre 1918-69622 Villeurbanne, Cedex, France
| | - Christophe A. Marquette
- Equipe Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1, CNRS 5246 ICBMS, Bâtiment CPE-43, bd du 11 novembre 1918-69622 Villeurbanne, Cedex, France
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Baptista PV, Doria G, Quaresma P, Cavadas M, Neves CS, Gomes I, Eaton P, Pereira E, Franco R. Nanoparticles in molecular diagnostics. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 104:427-88. [PMID: 22093226 DOI: 10.1016/b978-0-12-416020-0.00011-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The aim of this chapter is to provide an overview of the available and emerging molecular diagnostic methods that take advantage of the unique nanoscale properties of nanoparticles (NPs) to increase the sensitivity, detection capabilities, ease of operation, and portability of the biodetection assemblies. The focus will be on noble metal NPs, especially gold NPs, fluorescent NPs, especially quantum dots, and magnetic NPs, the three main players in the development of probes for biological sensing. The chapter is divided into four sections: a first section covering the unique physicochemical properties of NPs of relevance for their utilization in molecular diagnostics; the second section dedicated to applications of NPs in molecular diagnostics by nucleic acid detection; and the third section with major applications of NPs in the area of immunoassays. Finally, a concluding section highlights the most promising advances in the area and presents future perspectives.
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Affiliation(s)
- Pedro V Baptista
- Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Centro de Investigação em Genética Molecular Humana (CIGMH), Universidade Nova de Lisboa, Caparica, Portugal
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Noguera P, Posthuma-Trumpie GA, van Tuil M, van der Wal FJ, de Boer A, Moers APHA, van Amerongen A. Carbon nanoparticles in lateral flow methods to detect genes encoding virulence factors of Shiga toxin-producing Escherichia coli. Anal Bioanal Chem 2011; 399:831-8. [PMID: 21046083 PMCID: PMC3015178 DOI: 10.1007/s00216-010-4334-z] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 10/07/2010] [Accepted: 10/12/2010] [Indexed: 01/10/2023]
Abstract
The use of carbon nanoparticles is shown for the detection and identification of different Shiga toxin-producing Escherichia coli virulence factors (vt1, vt2, eae and ehxA) and a 16S control (specific for E. coli) based on the use of lateral flow strips (nucleic acid lateral flow immunoassay, NALFIA). Prior to the detection with NALFIA, a rapid amplification method with tagged primers was applied. In the evaluation of the optimised NALFIA strips, no cross-reactivity was found for any of the antibodies used. The limit of detection was higher than for quantitative PCR (q-PCR), in most cases between 10(4) and 10(5) colony forming units/mL or 0.1-0.9 ng/μL DNA. NALFIA strips were applied to 48 isolates from cattle faeces, and results were compared to those achieved by q-PCR. E. coli virulence factors identified by NALFIA were in very good agreement with those observed in q-PCR, showing in most cases sensitivity and specificity values of 1.0 and an almost perfect agreement between both methods (kappa coefficient larger than 0.9). The results demonstrate that the screening method developed is reliable, cost-effective and user-friendly, and that the procedure is fast as the total time required is <1 h, which includes amplification.
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Affiliation(s)
- P. Noguera
- Wageningen UR Food & Biobased Research, Biomolecular Sensing & Diagnostics, P.O. Box 17, 6700 AA Wageningen, the Netherlands
- Instituto de Reconocimiento Molecular y Desarrollo Tecnológico, Departamento de Química, Universidad Politécnica de Valencia, Camino de Vera, s/n, 46020 Valencia, Spain
| | - G. A. Posthuma-Trumpie
- Wageningen UR Food & Biobased Research, Biomolecular Sensing & Diagnostics, P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - M. van Tuil
- Wageningen UR Food & Biobased Research, Biomolecular Sensing & Diagnostics, P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - F. J. van der Wal
- Wageningen UR Central Veterinary Institute, Division Bacteriology and TSEs, P.O. Box 65, 8200 AB Lelystad, the Netherlands
| | - A. de Boer
- Wageningen UR Central Veterinary Institute, Division Bacteriology and TSEs, P.O. Box 65, 8200 AB Lelystad, the Netherlands
| | - A. P. H. A. Moers
- Wageningen UR Food & Biobased Research, Biomolecular Sensing & Diagnostics, P.O. Box 17, 6700 AA Wageningen, the Netherlands
| | - A. van Amerongen
- Wageningen UR Food & Biobased Research, Biomolecular Sensing & Diagnostics, P.O. Box 17, 6700 AA Wageningen, the Netherlands
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Blažková M, Javůrková B, Fukal L, Rauch P. Immunochromatographic strip test for detection of genus Cronobacter. Biosens Bioelectron 2010; 26:2828-34. [PMID: 21169009 DOI: 10.1016/j.bios.2010.10.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 09/17/2010] [Accepted: 10/02/2010] [Indexed: 12/11/2022]
Abstract
Members of the genus Cronobacter are opportunistic pathogens formerly known as Enterobacter sakazakii, which induce severe meningitis and sepsis in neonates and infants, with a high fatality rate. In this work, a simple and rapid immunochromatographic strip test for the detection of this pathogen was developed. Following the shortened bacteria cultivation and isolation of DNA, a specific gene sequence targeting 16S rRNA from Cronobacter spp. was amplified by PCR using 5'-end labelled specific primers. The PCR product, amplicon labelled with digoxigenin on one side and biotin on the other side, was directly added to the immunochromatographic strip test, composed of nitrocellulose membrane with bound antibody against digoxigenin in the test line. The visualization was mediated by colloidal carbon conjugated to neutravidin, and the appearance of grey/black line was indicative of the presence of specific amplicon. Colour intensity of the test line in pathogen-positive assay was visually distinguishable from that of negative sample within 10 min. The visual detection limit of PCR product was 8 ng. The specificity of the developed method was confirmed by standard microbiological techniques. Whole detection procedure with the incorporated immunostrip was applied to analysis of infant formulae samples, contaminated with less than 10 cells of Cronobacter spp. per 10 g. The results from immunochromatographic test indicated the absolute agreement with those from standard microbiological methods. Moreover, the developed procedure considerably reduced the total analysis time to 16 h whereas the reference microbiological method needs 6-7 days.
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Affiliation(s)
- Martina Blažková
- Department of Biochemistry and Microbiology, Institute of Chemical Technology, Technická 3, 166 28 Prague, Czech Republic
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Rahaie M, Kazemi S. Lectin-based Biosensors: As Powerful Tools in Bioanalytical Applications. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/biotech.2010.428.443] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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