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Ungai-Salánki R, Peter B, Gerecsei T, Orgovan N, Horvath R, Szabó B. A practical review on the measurement tools for cellular adhesion force. Adv Colloid Interface Sci 2019; 269:309-333. [PMID: 31128462 DOI: 10.1016/j.cis.2019.05.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 01/03/2023]
Abstract
Cell-cell and cell-matrix adhesions are fundamental in all multicellular organisms. They play a key role in cellular growth, differentiation, pattern formation and migration. Cell-cell adhesion is substantial in the immune response, pathogen-host interactions, and tumor development. The success of tissue engineering and stem cell implantations strongly depends on the fine control of live cell adhesion on the surface of natural or biomimetic scaffolds. Therefore, the quantitative and precise measurement of the adhesion strength of living cells is critical, not only in basic research but in modern technologies, too. Several techniques have been developed or are under development to quantify cell adhesion. All of them have their pros and cons, which has to be carefully considered before the experiments and interpretation of the recorded data. Current review provides a guide to choose the appropriate technique to answer a specific biological question or to complete a biomedical test by measuring cell adhesion.
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Sautner É, Papp K, Holczer E, Tóth EL, Ungai-Salánki R, Szabó B, Fürjes P, Prechl J. Detection of red blood cell surface antigens by probe-triggered cell collision and flow retardation in an autonomous microfluidic system. Sci Rep 2017; 7:1008. [PMID: 28432341 PMCID: PMC5430922 DOI: 10.1038/s41598-017-01166-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/23/2017] [Indexed: 11/17/2022] Open
Abstract
Microfluidic devices exploit combined physical, chemical and biological phenomena that could be unique in the sub-millimeter dimensions. The current goal of development of Point-of-Care (POC) medical devices is to extract the biomedical information from the blood. We examined the characteristics of blood flow in autonomous microfluidic devices with the aim to realize sensitive detection of interactions between particulate elements of the blood and the appropriately modified surfaces of the system. As a model experiment we demonstrated the fast analysis of the AB0 blood group system. We observed that the accumulation of red blood cells immobilized on the capillary wall leads to increased lateral movement of the flowing cells, resulting in the overall selective deceleration of the red blood cell flow column compared to the plasma fraction. We showed that by monitoring the flow rate characteristics in capillaries coated with blood type reagents it is possible to identify red blood cell types. Analysis of hydrodynamic effects governing blood flow by Finite Element Method based modelling supported our observations. Our proof-of-concept results point to a novel direction in blood analysis in autonomous microfluidic systems and also provide the basis for the construction of a simple quantitative device for blood group determination.
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Affiliation(s)
- Éva Sautner
- Budapest University of Technology and Economics, Budapest, 1111, Hungary
| | - Krisztián Papp
- MTA-ELTE Immunology Research Group, Budapest, 1117, Hungary.
| | - Eszter Holczer
- Inst. of Technical Physics and Materials Science, Centre for Energy Research, HAS, Budapest, 1121, Hungary
| | - Eszter L Tóth
- Inst. of Technical Physics and Materials Science, Centre for Energy Research, HAS, Budapest, 1121, Hungary.,Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, 1083, Hungary
| | | | - Bálint Szabó
- Nanobiosensorics Group at Inst. of Technical Physics and Materials Science, Centre for Energy Research, HAS, Budapest, 1121, Hungary.,Department of Biological Physics, Eötvös Loránd University, Budapest, 1117, Hungary
| | - Péter Fürjes
- Inst. of Technical Physics and Materials Science, Centre for Energy Research, HAS, Budapest, 1121, Hungary
| | - József Prechl
- MTA-ELTE Immunology Research Group, Budapest, 1117, Hungary.,Diagnosticum Zrt., Budapest, 1047, Hungary
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Sándor N, Lukácsi S, Ungai-Salánki R, Orgován N, Szabó B, Horváth R, Erdei A, Bajtay Z. CD11c/CD18 Dominates Adhesion of Human Monocytes, Macrophages and Dendritic Cells over CD11b/CD18. PLoS One 2016; 11:e0163120. [PMID: 27658051 PMCID: PMC5033469 DOI: 10.1371/journal.pone.0163120] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 09/03/2016] [Indexed: 12/13/2022] Open
Abstract
Complement receptors CR3 (CD11b/CD18) and CR4 (CD11c/CD18) belong to the family of beta2 integrins and are expressed mainly by myeloid cell types in humans. Previously, we proved that CR3 rather than CR4 plays a key role in phagocytosis. Here we analysed how CD11b and CD11c participate in cell adhesion to fibrinogen, a common ligand of CR3 and CR4, employing human monocytes, monocyte-derived macrophages (MDMs) and monocyte-derived dendritic cells (MDDCs) highly expressing CD11b as well as CD11c. We determined the exact numbers of CD11b and CD11c on these cell types by a bead-based technique, and found that the ratio of CD11b/CD11c is 1.2 for MDDCs, 1.7 for MDMs and 7.1 for monocytes, suggesting that the function of CD11c is preponderant in MDDCs and less pronounced in monocytes. Applying state-of-the-art biophysical techniques, we proved that cellular adherence to fibrinogen is dominated by CD11c. Furthermore, we found that blocking CD11b significantly enhances the attachment of MDDCs and MDMs to fibrinogen, demonstrating a competition between CD11b and CD11c for this ligand. On the basis of the cell surface receptor numbers and the measured adhesion strength we set up a model, which explains the different behavior of the three cell types.
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Affiliation(s)
- Noémi Sándor
- MTA-ELTE Immunology Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Szilvia Lukácsi
- Department of Immunology, Institute of Biology, Faculty of Science, Eötvös Loránd University, Budapest, Hungary
| | - Rita Ungai-Salánki
- Department of Biological Physics, Institute of Physics, Faculty of Science, Eötvös Loránd University, Budapest, Hungary
| | - Norbert Orgován
- Nanobiosensorics “Lendület” Group, Institute of Technical Physics and Material Sciences, Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Bálint Szabó
- Department of Biological Physics, Institute of Physics, Faculty of Science, Eötvös Loránd University, Budapest, Hungary
| | - Róbert Horváth
- Nanobiosensorics “Lendület” Group, Institute of Technical Physics and Material Sciences, Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Anna Erdei
- MTA-ELTE Immunology Research Group, Hungarian Academy of Sciences, Budapest, Hungary
- Department of Immunology, Institute of Biology, Faculty of Science, Eötvös Loránd University, Budapest, Hungary
| | - Zsuzsa Bajtay
- Department of Immunology, Institute of Biology, Faculty of Science, Eötvös Loránd University, Budapest, Hungary
- * E-mail:
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Ungai-Salánki R, Gerecsei T, Fürjes P, Orgovan N, Sándor N, Holczer E, Horvath R, Szabó B. Automated single cell isolation from suspension with computer vision. Sci Rep 2016; 6:20375. [PMID: 26856740 PMCID: PMC4746594 DOI: 10.1038/srep20375] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/23/2015] [Indexed: 11/23/2022] Open
Abstract
Current robots can manipulate only surface-attached cells seriously limiting the fields of their application for single cell handling. We developed a computer vision-based robot applying a motorized microscope and micropipette to recognize and gently isolate intact individual cells for subsequent analysis, e.g., DNA/RNA sequencing in 1-2 nanoliters from a thin (~100 μm) layer of cell suspension. It can retrieve rare cells, needs minimal sample preparation, and can be applied for virtually any tissue cell type. Combination of 1 μm positioning precision, adaptive cell targeting and below 1 nl liquid handling precision resulted in an unprecedented accuracy and efficiency in robotic single cell isolation. Single cells were injected either into the wells of a miniature plate with a sorting speed of 3 cells/min or into standard PCR tubes with 2 cells/min. We could isolate labeled cells also from dense cultures containing ~1,000 times more unlabeled cells by the successive application of the sorting process. We compared the efficiency of our method to that of single cell entrapment in microwells and subsequent sorting with the automated micropipette: the recovery rate of single cells was greatly improved.
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Affiliation(s)
- Rita Ungai-Salánki
- Doctoral School of Molecular- and Nanotechnologies, University of Pannonia, Veszprém, Hungary
- Nanobiosensorics Group, Institute of Technical Physics and Materials Science, Centre for Energy Research, Hung. Acad. Sci., Budapest, Hungary
- Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1A, Budapest, H-1117 Hungary
| | - Tamás Gerecsei
- Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1A, Budapest, H-1117 Hungary
| | - Péter Fürjes
- MEMS Lab, Institute of Technical Physics and Materials Science, Centre for Energy Research, Hung. Acad. Sci., Budapest, Hungary
| | - Norbert Orgovan
- Nanobiosensorics Group, Institute of Technical Physics and Materials Science, Centre for Energy Research, Hung. Acad. Sci., Budapest, Hungary
- Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1A, Budapest, H-1117 Hungary
| | - Noémi Sándor
- MTA-ELTE Immunology Research Group, Budapest, Hungary
| | - Eszter Holczer
- MEMS Lab, Institute of Technical Physics and Materials Science, Centre for Energy Research, Hung. Acad. Sci., Budapest, Hungary
| | - Robert Horvath
- Nanobiosensorics Group, Institute of Technical Physics and Materials Science, Centre for Energy Research, Hung. Acad. Sci., Budapest, Hungary
| | - Bálint Szabó
- Nanobiosensorics Group, Institute of Technical Physics and Materials Science, Centre for Energy Research, Hung. Acad. Sci., Budapest, Hungary
- Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1A, Budapest, H-1117 Hungary
- CellSorter Company for Innovations, Budapest, Hungary
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