51
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An integrated magnetic microfluidic chip for rapid immunodetection of the prostate specific antigen using immunomagnetic beads. Mikrochim Acta 2019; 186:252. [DOI: 10.1007/s00604-019-3349-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 02/27/2019] [Indexed: 01/07/2023]
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52
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Paper-based fluorometric immunodevice with quantum-dot labeled antibodies for simultaneous detection of carcinoembryonic antigen and prostate specific antigen. Mikrochim Acta 2019; 186:112. [PMID: 30643993 DOI: 10.1007/s00604-019-3232-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/04/2019] [Indexed: 12/21/2022]
Abstract
A method is described for simultaneous fluorometric determination of the biomarkers carcinoembryonic antigen (CEA) and prostate specific antigen (PSA) on the same zone of a paper-based immunodevice. Two kinds of CdTe quantum dots, with respective emission peaks at 525 nm and 605 nm under a single excitation wavelength of 272 nm, were used to label the antibodies against CEA and PSA. Then the capture antibodies of CEA and PSA were immobilized on the same zone of the paper-based device. With the difference of the colors of the quantum dot fluorescence (green and orange), CEA and PSA can be detected on the same zone of the paper-based device. By using of sandwich immunoassay format, CEA and PSA can be simultaneously detected in human serum samples with a linear response in the 1.0-40 ng·mL-1 concentration range for both. The recovery rates of the serum sample were in the range of 95-105%. The method has the potential of being applied to the simultaneous determination of various other kinds of substances on a single multichannel paper-based chip. Graphical abstract Schematic presentation of the simultaneous fluorometric detection of two cancer biomarkers on the same zone of the paper-based immunodevice is provided. Two kinds of CdTe quantum dots with different emission peaks under the same excitation wavelength are labeled on different detection antibodies.
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53
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Díaz-Fernández A, Miranda-Castro R, de-Los-Santos-Álvarez N, Rodríguez EF, Lobo-Castañón MJ. Focusing aptamer selection on the glycan structure of prostate-specific antigen: Toward more specific detection of prostate cancer. Biosens Bioelectron 2018; 128:83-90. [PMID: 30640124 DOI: 10.1016/j.bios.2018.12.040] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/10/2018] [Accepted: 12/21/2018] [Indexed: 10/27/2022]
Abstract
The development of chemical sensors capable of detecting the specific glycosylation patterns of proteins offers a powerful mean for the early detection of cancer. Unfortunately, this strategy is scarcely explored because receptors recognizing the glycans linked to proteins are challenging to discover. In this work, we describe a simple method for directing the selection of aptamers toward the glycan structure of the glycoproteins, with prostate-specific antigen (PSA) as a model target. Using this strategy, we identified one aptamer (PSA-1) that binds the glycan moiety of PSA with reasonable affinity (a dissociation constant of 177 ± 65 nM). Interestingly, an electrochemical sensor with a sandwich format employing the identified aptamer as a signaling receptor, provides a tool of discriminating human PSA from the unglycosylated protein, with a limit of detection of 0.66 ng/mL. The sensor responds to different levels of PSA in serum, correlating well with chemiluminescence ELISA used in hospitals even with higher potential to discriminate clinically meaningful prostate cancer. Although validation on a larger cohort is needed, this is the first demonstration of an aptamer-based sensor to detect PSA by focusing in its glycan moiety.
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Affiliation(s)
- Ana Díaz-Fernández
- Dpto. Química Física y Analítica, Universidad de Oviedo, Av. Julián Clavería 8, 33006 Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma, 33011 Oviedo, Spain
| | - Rebeca Miranda-Castro
- Dpto. Química Física y Analítica, Universidad de Oviedo, Av. Julián Clavería 8, 33006 Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma, 33011 Oviedo, Spain
| | - Noemí de-Los-Santos-Álvarez
- Dpto. Química Física y Analítica, Universidad de Oviedo, Av. Julián Clavería 8, 33006 Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma, 33011 Oviedo, Spain
| | | | - María Jesús Lobo-Castañón
- Dpto. Química Física y Analítica, Universidad de Oviedo, Av. Julián Clavería 8, 33006 Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma, 33011 Oviedo, Spain.
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54
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A glassy carbon electrode modified with TiO2(200)-rGO hybrid nanosheets for aptamer based impedimetric determination of the prostate specific antigen. Mikrochim Acta 2018; 186:33. [DOI: 10.1007/s00604-018-3141-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 12/01/2018] [Indexed: 12/16/2022]
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55
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Tkac J, Bertok T, Hires M, Jane E, Lorencova L, Kasak P. Glycomics of prostate cancer: updates. Expert Rev Proteomics 2018; 16:65-76. [PMID: 30451032 DOI: 10.1080/14789450.2019.1549993] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Introduction: Prostate cancer (PCa) is a life-threatening disease affecting millions of men. The current best PCa biomarker (level of prostate-specific antigen in serum) lacks specificity for PCa diagnostics and this is why novel PCa biomarkers in addition to the conventional ones based on biomolecules such as DNA, RNA and proteins need to be identified. Areas covered: This review details the potential of glycans-based biomarkers to become diagnostic, prognostic, predictive and therapeutic PCa biomarkers with a brief description of the innovative approaches applied to glycan analysis to date. Finally, the review covers the possibility to use exosomes as a rich source of glycans for future innovative and advanced diagnostics of PCa. The review covers updates in the field since 2016. Expert commentary: The summary provided in this review paper suggests that glycan-based biomarkers can offer high-assay accuracy not only for diagnostic purposes but also for monitoring/surveillance of the PCa disease.
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Affiliation(s)
- Jan Tkac
- a Slovak Academy of Sciences , Institute of Chemistry , Bratislava , Slovakia.,b Glycanostics Ltd ., Bratislava , Slovakia
| | - Tomas Bertok
- a Slovak Academy of Sciences , Institute of Chemistry , Bratislava , Slovakia.,b Glycanostics Ltd ., Bratislava , Slovakia
| | - Michal Hires
- a Slovak Academy of Sciences , Institute of Chemistry , Bratislava , Slovakia
| | - Eduard Jane
- a Slovak Academy of Sciences , Institute of Chemistry , Bratislava , Slovakia
| | - Lenka Lorencova
- a Slovak Academy of Sciences , Institute of Chemistry , Bratislava , Slovakia.,b Glycanostics Ltd ., Bratislava , Slovakia
| | - Peter Kasak
- c Center for Advanced Materials , Qatar University , Doha , Qatar
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56
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Parra JPRLL, Crulhas BP, Basso CR, Delella FK, Castro GR, Pedrosa VA. Using an Electrochemical Aptasensor to Early Detect Prostate Specific and Free Prostate Specific Antigens Released by Cancer Cells. ELECTROANAL 2018. [DOI: 10.1002/elan.201800558] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | - Bruno P. Crulhas
- Chemistry and Biochemistry Department, Institute of BioscienceUNESP Botucatu, SP Brazil
| | - Caroline R. Basso
- Chemistry and Biochemistry Department, Institute of BioscienceUNESP Botucatu, SP Brazil
| | - Flávia K. Delella
- Chemistry and Biochemistry Department, Institute of BioscienceUNESP Botucatu, SP Brazil
| | - Gustavo R. Castro
- Chemistry and Biochemistry Department, Institute of BioscienceUNESP Botucatu, SP Brazil
| | - Valber A. Pedrosa
- Chemistry and Biochemistry Department, Institute of BioscienceUNESP Botucatu, SP Brazil
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57
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Bertok T, Lorencova L, Chocholova E, Jane E, Vikartovska A, Kasak P, Tkac J. Electrochemical Impedance Spectroscopy Based Biosensors: Mechanistic Principles, Analytical Examples and Challenges towards Commercialization for Assays of Protein Cancer Biomarkers. ChemElectroChem 2018. [DOI: 10.1002/celc.201800848] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Tomas Bertok
- Department of Glycobiotechnology Institution of ChemistrySlovak Academy of Sciences Dubravska cesta 9 845 38 Bratislava Slovakia
| | - Lenka Lorencova
- Department of Glycobiotechnology Institution of ChemistrySlovak Academy of Sciences Dubravska cesta 9 845 38 Bratislava Slovakia
| | - Erika Chocholova
- Department of Glycobiotechnology Institution of ChemistrySlovak Academy of Sciences Dubravska cesta 9 845 38 Bratislava Slovakia
| | - Eduard Jane
- Department of Glycobiotechnology Institution of ChemistrySlovak Academy of Sciences Dubravska cesta 9 845 38 Bratislava Slovakia
| | - Alica Vikartovska
- Department of Glycobiotechnology Institution of ChemistrySlovak Academy of Sciences Dubravska cesta 9 845 38 Bratislava Slovakia
| | - Peter Kasak
- Center for Advanced MaterialsQatar University Doha 2713 Qatar
| | - Jan Tkac
- Department of Glycobiotechnology Institution of ChemistrySlovak Academy of Sciences Dubravska cesta 9 845 38 Bratislava Slovakia
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58
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An ultrasensitive aptasensor for prostate specific antigen assay based on Exonuclease T-aided cyclic cleavage. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9203-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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59
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Electrochemical prostate specific antigen aptasensor based on hemin functionalized graphene-conjugated palladium nanocomposites. Mikrochim Acta 2018; 185:159. [PMID: 29594519 DOI: 10.1007/s00604-018-2686-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/17/2018] [Indexed: 11/27/2022]
Abstract
An electrochemical aptasensor is described for the detection of prostate specific antigen (PSA). The aptasensor is based on the use of hemin-functionalized graphene-conjugated palladium nanoparticles (H-Gr/PdNPs) deposited on a glassy carbon electrode. The nanocomposites integrate the high electrical conductivity of graphene with the easily functionalized surface chemistry of PdNPs and their excellent catalytic property. The hemin placed on graphene acts as both a protective agent and an in-situ redox probe. The PdNPs provide numerous binding sites for the immobilization of DNA-biotin via coordinative binding between Pd and amino groups. A sensitive and specific PSA assay was attained by immobilizing the PSA aptamer via biotin-streptavidin interaction. The resulting aptasensor has a linear response that covers the PSA concentration range from 0.025 to 205 ng·mL-1, with a 8 pg·mL-1 lower detection limit (at -0.362 V, scan rate: 0.1 mV·s-1, S/N = 3). The method was applied to the quantitation of PSA in spiked serum samples, giving recoveries ranging from 95.0 to 100.3%. Graphical abstract A signal amplified and approving electrochemical aptasensor was constructed for the determination of prostate specific antigen (PSA) based on the use of hemin-functionalized graphene conjugated to palladium nanoparticles (H-Gr/PdNPs). The sensor has a wide linear range, a relatively low detection limit, satisfying stability and high specificity.
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60
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Shin J, Chakravarty S, Choi W, Lee K, Han D, Hwang H, Choi J, Jung HI. Mobile diagnostics: next-generation technologies forin vitrodiagnostics. Analyst 2018. [DOI: 10.1039/c7an01945a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The emergence of a wide range of applications of smartphones along with advances in ‘liquid biopsy’ has significantly propelled medical research particularly in the field ofin vitrodiagnostics (IVD).
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Affiliation(s)
- Joonchul Shin
- School of Mechanical Engineering
- Yonsei University
- Seoul 03722
- Republic of Korea
| | - Sudesna Chakravarty
- School of Mechanical Engineering
- Yonsei University
- Seoul 03722
- Republic of Korea
| | - Wooseok Choi
- School of Mechanical Engineering
- Yonsei University
- Seoul 03722
- Republic of Korea
| | - Kyungyeon Lee
- School of Mechanical Engineering
- Yonsei University
- Seoul 03722
- Republic of Korea
| | | | | | | | - Hyo-Il Jung
- School of Mechanical Engineering
- Yonsei University
- Seoul 03722
- Republic of Korea
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61
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Belicky S, Damborsky P, Zapatero-Rodríguez J, O'Kennedy R, Tkac J. Full-length antibodies versus single-chain antibody fragments for a selective impedimetric lectin-based glycoprofiling of prostate specific antigen. Electrochim Acta 2017; 246:399-405. [PMID: 29104305 DOI: 10.1016/j.electacta.2017.06.065] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The main aim of the research was to design a functional impedimetric biosensor able to glycoprofile prostate specific antigen (PSA), a biomarker for prostate cancer (PCa), with high specificity using lectins as glycan recognising proteins. Traditionally, full-length antibody is immobilised on the biosensor interface for specific capture of PSA with subsequent glycoprofiling of PSA by addition of lectins. Since full-length antibodies contain glycans in the Fc domain, particular attention has to be paid to suppress direct binding of lectins to immobilised full-length antibodies, which would compromise accurate glycoprofiling. This issue is addressed here using a recombinant single-chain antibody fragments (scAb), which do not contain any carbohydrate moiety. Surface plasmon resonance was applied to prove negligible interaction of lectins with immobilised scAb fragments, while substantial binding of lectins to full length antibodies was observed. Eight different biosensor designs were tested for their ability to detect PSA. The biosensor device based on scAb fragments covalently immobilised on the gold electrode surface, patterned by a mixed SAM using standard amine coupling chemistry, proved to be the most sensitive. The scAb fragment-based biosensor exhibited sensitivity of 15.9 ± 0.8% decade-1 (R2 = 0.991 with an average RSD of 4.9%), while the full antibody-based biosensor offered sensitivity towards PSA of 4.2 ± 0.1% decade-1 (R2 = 0.999 with an average RSD of 4.8%). Moreover, the selectivity of the scAb-based biosensor was tested using a kallikrein 2 protein, a protein structurally similar to PSA, and the results indicated high selectivity for PSA detection.
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Affiliation(s)
- Stefan Belicky
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38 Bratislava, Slovakia
| | - Pavel Damborsky
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38 Bratislava, Slovakia
| | - Julia Zapatero-Rodríguez
- Biomedical Diagnostics Institute (BDI), Dublin City University, Glasnevin, Dublin 9, Ireland.,School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Richard O'Kennedy
- Biomedical Diagnostics Institute (BDI), Dublin City University, Glasnevin, Dublin 9, Ireland.,School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Jan Tkac
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38 Bratislava, Slovakia
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