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Pinkeova A, Tomikova A, Bertokova A, Fabinyova E, Bartova R, Jane E, Hroncekova S, Sievert KD, Sokol R, Jirasko M, Kucera R, Eder IE, Horninger W, Klocker H, Ďubjaková P, Fillo J, Bertok T, Tkac J. Glycoprofiling of proteins as prostate cancer biomarkers: A multinational population study. PLoS One 2024; 19:e0300430. [PMID: 38498504 PMCID: PMC10947713 DOI: 10.1371/journal.pone.0300430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 02/27/2024] [Indexed: 03/20/2024] Open
Abstract
The glycoprofiling of two proteins, the free form of the prostate-specific antigen (fPSA) and zinc-α-2-glycoprotein (ZA2G), was assessed to determine their suitability as prostate cancer (PCa) biomarkers. The glycoprofiling of proteins was performed by analysing changes in the glycan composition on fPSA and ZA2G using lectins (proteins that recognise glycans, i.e. complex carbohydrates). The specific glycoprofiling of the proteins was performed using magnetic beads (MBs) modified with horseradish peroxidase (HRP) and antibodies that selectively enriched fPSA or ZA2G from human serum samples. Subsequently, the antibody-captured glycoproteins were incubated on lectin-coated ELISA plates. In addition, a novel glycoprotein standard (GPS) was used to normalise the assay. The glycoprofiling of fPSA and ZA2G was performed in human serum samples obtained from men undergoing a prostate biopsy after an elevated serum PSA, and prostate cancer patients with or without prior therapy. The results are presented in the form of an ROC (Receiver Operating Curve). A DCA (Decision Curve Analysis) to evaluate the clinical performance and net benefit of fPSA glycan-based biomarkers was also performed. While the glycoprofiling of ZA2G showed little promise as a potential PCa biomarker, the glycoprofiling of fPSA would appear to have significant clinical potential. Hence, the GIA (Glycobiopsy ImmunoAssay) test integrates the glycoprofiling of fPSA (i.e. two glycan forms of fPSA). The GIA test could be used for early diagnoses of PCa (AUC = 0.83; n = 559 samples) with a potential for use in therapy-monitoring (AUC = 0.90; n = 176 samples). Moreover, the analysis of a subset of serum samples (n = 215) revealed that the GIA test (AUC = 0.81) outperformed the PHI (Prostate Health Index) test (AUC = 0.69) in discriminating between men with prostate cancer and those with benign serum PSA elevation.
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Affiliation(s)
- Andrea Pinkeova
- Glycanostics, Ltd., Bratislava, Slovak Republic
- Institute of Chemistry, Bratislava, Slovak Republic
| | | | | | | | | | - Eduard Jane
- Glycanostics, Ltd., Bratislava, Slovak Republic
- Institute of Chemistry, Bratislava, Slovak Republic
| | | | | | - Roman Sokol
- Private Urological Ambulance, Trencin, Slovak Republic
| | - Michal Jirasko
- Department of Pharmacology and Toxicology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Radek Kucera
- Department of Pharmacology and Toxicology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
- Department of Immunochemistry Diagnostics, University Hospital in Pilsen, Pilsen, Czech Republic
| | - Iris E. Eder
- Division of Experimental Urology, Department of Urology, Medical University Innsbruck, Innsbruck, Austria
| | - Wolfgang Horninger
- Division of Experimental Urology, Department of Urology, Medical University Innsbruck, Innsbruck, Austria
| | - Helmut Klocker
- Division of Experimental Urology, Department of Urology, Medical University Innsbruck, Innsbruck, Austria
| | | | - Juraj Fillo
- University Hospital Bratislava, Bratislava, Slovakia
| | - Tomas Bertok
- Glycanostics, Ltd., Bratislava, Slovak Republic
- Institute of Chemistry, Bratislava, Slovak Republic
| | - Jan Tkac
- Glycanostics, Ltd., Bratislava, Slovak Republic
- Institute of Chemistry, Bratislava, Slovak Republic
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Kosutova N, Lorencova L, Hires M, Jane E, Orovcik L, Kollar J, Kozics K, Gabelova A, Ukraintsev E, Rezek B, Kasak P, Cernocka H, Ostatna V, Blahutova J, Vikartovska A, Bertok T, Tkac J. Negative Charge-Carrying Glycans Attached to Exosomes as Novel Liquid Biopsy Marker. SENSORS (BASEL, SWITZERLAND) 2024; 24:1128. [PMID: 38400284 PMCID: PMC10892626 DOI: 10.3390/s24041128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
Prostate cancer (PCa) is the second most common cancer. In this paper, the isolation and properties of exosomes as potential novel liquid biopsy markers for early PCa liquid biopsy diagnosis are investigated using two prostate human cell lines, i.e., benign (control) cell line RWPE1 and carcinoma cell line 22Rv1. Exosomes produced by both cell lines are characterised by various methods including nanoparticle-tracking analysis, dynamic light scattering, scanning electron microscopy and atomic force microscopy. In addition, surface plasmon resonance (SPR) is used to study three different receptors on the exosomal surface (CD63, CD81 and prostate-specific membrane antigen-PMSA), implementing monoclonal antibodies and identifying the type of glycans present on the surface of exosomes using lectins (glycan-recognising proteins). Electrochemical analysis is used to understand the interfacial properties of exosomes. The results indicate that cancerous exosomes are smaller, are produced at higher concentrations, and exhibit more nega tive zeta potential than the control exosomes. The SPR experiments confirm that negatively charged α-2,3- and α-2,6-sialic acid-containing glycans are found in greater abundance on carcinoma exosomes, whereas bisecting and branched glycans are more abundant in the control exosomes. The SPR results also show that a sandwich antibody/exosomes/lectins configuration could be constructed for effective glycoprofiling of exosomes as a novel liquid biopsy marker.
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Affiliation(s)
- Natalia Kosutova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Lenka Lorencova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Michal Hires
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Eduard Jane
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Lubomir Orovcik
- Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Dubravska cesta 9/6319, 845 13 Bratislava, Slovakia
| | - Jozef Kollar
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - Katarina Kozics
- Biomedical Research Centre, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia (A.G.)
| | - Alena Gabelova
- Biomedical Research Centre, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia (A.G.)
| | - Egor Ukraintsev
- Department of Physics, Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, 166 27 Prague, Czech Republic; (E.U.); (B.R.)
| | - Bohuslav Rezek
- Department of Physics, Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, 166 27 Prague, Czech Republic; (E.U.); (B.R.)
| | - Peter Kasak
- Centre for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar;
| | - Hana Cernocka
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61200 Brno, Czech Republic; (H.C.)
| | - Veronika Ostatna
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61200 Brno, Czech Republic; (H.C.)
| | - Jana Blahutova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Alica Vikartovska
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Tomas Bertok
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Jan Tkac
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
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Lorencova L, Kasak P, Kosutova N, Jerigova M, Noskovicova E, Vikartovska A, Barath M, Farkas P, Tkac J. MXene-based electrochemical devices applied for healthcare applications. Mikrochim Acta 2024; 191:88. [PMID: 38206460 PMCID: PMC10784403 DOI: 10.1007/s00604-023-06163-6] [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: 10/03/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024]
Abstract
The initial part of the review provides an extensive overview about MXenes as novel and exciting 2D nanomaterials describing their basic physico-chemical features, methods of their synthesis, and possible interfacial modifications and techniques, which could be applied to the characterization of MXenes. Unique physico-chemical parameters of MXenes make them attractive for many practical applications, which are shortly discussed. Use of MXenes for healthcare applications is a hot scientific discipline which is discussed in detail. The article focuses on determination of low molecular weight analytes (metabolites), high molecular weight analytes (DNA/RNA and proteins), or even cells, exosomes, and viruses detected using electrochemical sensors and biosensors. Separate chapters are provided to show the potential of MXene-based devices for determination of cancer biomarkers and as wearable sensors and biosensors for monitoring of a wide range of human activities.
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Affiliation(s)
- Lenka Lorencova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic.
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Peter Kasak
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Natalia Kosutova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Monika Jerigova
- International Laser Center, Slovak Center of Scientific and Technical Information, Ilkovicova 3, 841 04, Bratislava, Slovak Republic
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, Mlynska Dolina, 842 15, Bratislava, Slovak Republic
| | - Eva Noskovicova
- International Laser Center, Slovak Center of Scientific and Technical Information, Ilkovicova 3, 841 04, Bratislava, Slovak Republic
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, Mlynska Dolina, 842 15, Bratislava, Slovak Republic
| | - Alica Vikartovska
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Marek Barath
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Pavol Farkas
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Jan Tkac
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic.
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Hroncekova S, Lorencova L, Bertok T, Hires M, Jane E, Bučko M, Kasak P, Tkac J. Amperometric Miniaturised Portable Enzymatic Nanobiosensor for the Ultrasensitive Analysis of a Prostate Cancer Biomarker. J Funct Biomater 2023; 14:jfb14030161. [PMID: 36976085 PMCID: PMC10056543 DOI: 10.3390/jfb14030161] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/12/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
Screen-printing technology is a game changer in many fields including electrochemical biosensing. Two-dimensional nanomaterial MXene Ti3C2Tx was integrated as a nanoplatform to immobilise enzyme sarcosine oxidase (SOx) onto the interface of screen-printed carbon electrodes (SPCEs). A miniaturised, portable, and cost-effective nanobiosensor was constructed using chitosan as a biocompatible glue for the ultrasensitive detection of prostate cancer biomarker sarcosine. The fabricated device was characterised with energy-dispersive X-ray spectroscopy (EDX), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Sarcosine was detected indirectly via the amperometric detection of H2O2 formed during enzymatic reaction. The nanobiosensor could detect sarcosine down to 7.0 nM with a maximal peak current output at 4.10 ± 0.35 × 10−5 A using only 100 µL of a sample per measurement. The assay run in 100 μL of an electrolyte showed the first linear calibration curve in a concentration window of up to 5 μM with a slope of 2.86 μA·μM−1, and the second linear calibration curve in the range of 5–50 μM with a slope of 0.32 ± 0.01 μA·μM−1 (R2 = 0.992). The device provided a high recovery index of 92.5% when measuring an analyte spiked into artificial urine, and could be used for detection of sarcosine in urine for at least a period of 5 weeks after the preparation.
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Affiliation(s)
- Stefania Hroncekova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, 845 38 Bratislava, Slovakia
| | - Lenka Lorencova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, 845 38 Bratislava, Slovakia
| | - Tomas Bertok
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, 845 38 Bratislava, Slovakia
| | - Michal Hires
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, 845 38 Bratislava, Slovakia
| | - Eduard Jane
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, 845 38 Bratislava, Slovakia
| | - Marek Bučko
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, 845 38 Bratislava, Slovakia
| | - Peter Kasak
- Center for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar
| | - Jan Tkac
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, 845 38 Bratislava, Slovakia
- Correspondence:
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Vrablova V, Blsakova A, Lorencova L, Kollar J, Vikartovska A, Kasak P, Tkac J. How to choose proper magnetic particles for bioaffinity interactions? The case for immobilised glyconanoconjugate. Anal Chim Acta 2023; 1242:340794. [PMID: 36657889 DOI: 10.1016/j.aca.2023.340794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/29/2022] [Accepted: 01/02/2023] [Indexed: 01/04/2023]
Abstract
In this study, an assay for detection of the cancer biomarker Thomsen-nouvelle (Tn) antigen on the ELISA plates format was designed and developed. The effects of size and the interfacial density of the negative charge of magnetic beads (MBs) on the specific sensitivity of the bioaffinity interaction were studied. In particular, glyconanoconjugate, i.e. glycan Tn antigen conjugated to bovine serum albumin (BSA) was covalently immobilised on MBs for the bioaffinity detection of anti-Tn antibodies as cancer biomarkers. Six different MBs were used in the study, i.e. carboxy-modified MBs of 250 nm, 500 nm, 1000 nm and 2800 nm and epoxy-modified MBs of 2800 nm and 4500 nm. In order to evaluate which MBs are the best suited for detection of the analyte anti-Tn antibodies, sensitivities of detection (slopes from calibration curves) were calculated. Next, specific sensitivities were calculated for each type of MBs as a ratio of sensitivity of detection to the mass of MBs. From zeta potential ζ for each type of MBs, the interfacial charge density on MBs was calculated, expressed as the density of zeta potential ζd (ratio of zeta potential to surface area of MBs, i.e. ζd = ζ/A). Then, we evaluated the effect of size and ζd on the specific sensitivity of detection of anti-Tn antibodies in order to understand the immobilisation process on nanoscale. We also identified an optimal value of ζd on MBs; this was essential to achieve highly sensitive detection of the analyte, which made it possible to attain limit of detection (LOD) of (0.31 ± 0.01) ng mL-1 or (2.10 ± 0.04) pM for analyte detection. In addition, the optimal assay configuration was highly selective and enabled reliable detection of the analyte in human serum with a recovery index in the range of 102-104%.
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Affiliation(s)
- Veronika Vrablova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38, Bratislava, Slovakia
| | - Anna Blsakova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38, Bratislava, Slovakia
| | - Lenka Lorencova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38, Bratislava, Slovakia
| | - Jozef Kollar
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41, Bratislava, Slovakia
| | - Alica Vikartovska
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38, Bratislava, Slovakia
| | - Peter Kasak
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Jan Tkac
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38, Bratislava, Slovakia.
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Bertokova A, Svecova N, Kozics K, Gabelova A, Vikartovska A, Jane E, Hires M, Bertok T, Tkac J. Exosomes from prostate cancer cell lines: Isolation optimisation and characterisation. Biomed Pharmacother 2022; 151:113093. [PMID: 35576661 DOI: 10.1016/j.biopha.2022.113093] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 04/24/2022] [Accepted: 05/04/2022] [Indexed: 11/02/2022] Open
Abstract
Exosomes are considered to be a rich source of biomarkers, hence in this article we examine the best procedure for their isolation. We examine several isolation procedures, exosome storage conditions and other conditions affecting exosome production by prostate cell lines. We selected four different commercially available kits based on different principles to achieve exosome isolation, the best being magnetic-based. In addition, we found storage at - 20 °C to be good for storing isolated exosomes and that exosomes were produced from the cancerous prostate cell line 22Rv1 in much greater amounts than the non-cancerous prostate cell line RWPE1. We also found differences in the response of both cell lines in the production of exosomes as a result of stress, i.e. exposure to hydrogen peroxide and starvation. The effect of Triton X-100 on exosome lysis was examined using two different surfactant concentrations by analysis of the exosome count and change in the exosome size. The final part of the article details the advantages of the use of a 2D biochip prepared in-house over a commercially available 3D biochip for monitoring the interaction of exosomes via its surface receptors (CD63) with an immobilised ligand (anti-CD63 antibodies) using surface plasmon resonance. The final experiment shows the potential of lectin fluorescent microarrays for the analysis of glycans present in lysed exosomes.
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Affiliation(s)
- Aniko Bertokova
- Glycanostics, Ltd., Kudlákova 7, Bratislava 841 01, Slovak Republic
| | - Natalia Svecova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 845 38, Slovak Republic
| | - Katarina Kozics
- Biomedical Research Centre, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovak Republic
| | - Alena Gabelova
- Biomedical Research Centre, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovak Republic
| | - Alica Vikartovska
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 845 38, Slovak Republic
| | - Eduard Jane
- Glycanostics, Ltd., Kudlákova 7, Bratislava 841 01, Slovak Republic; Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 845 38, Slovak Republic
| | - Michal Hires
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 845 38, Slovak Republic
| | - Tomas Bertok
- Glycanostics, Ltd., Kudlákova 7, Bratislava 841 01, Slovak Republic; Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 845 38, Slovak Republic
| | - Jan Tkac
- Glycanostics, Ltd., Kudlákova 7, Bratislava 841 01, Slovak Republic; Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 845 38, Slovak Republic.
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Blšákova A, Květoň F, Lorencová L, Blixt O, Vikartovská A, Kasak P, Tkac J. Amplified suspension magnetic bead-based assay for sensitive detection of anti-glycan antibodies as potential cancer biomarkers. Anal Chim Acta 2022; 1195:339444. [DOI: 10.1016/j.aca.2022.339444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/27/2021] [Accepted: 01/03/2022] [Indexed: 11/16/2022]
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