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Okayama H, Tomita M, Suzuki M, Yasukawa T. Rapid Formation of Arrayed Cells on an Electrode with Microwells by a Scanning Electrode Based on Positive Dielectrophoresis. ANAL SCI 2019; 35:701-704. [PMID: 30773512 DOI: 10.2116/analsci.19n002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We have developed a simple and rapid formation of a cell-based array on microwell array electrodes by an attractive force of positive dielectrophoresis (p-DEP), even after removing an upper disk electrode stick that was used as a counter electrode to the microwell array electrodes. The attractive force of p-DEP generated by the scanning of the disk electrode allows the formation of a cell-based array on all microwell arrays. We demonstrated an exploration of target cells spiked with a low ratio after removing the disk electrode.
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Affiliation(s)
- Hiroki Okayama
- Graduate School of Material Science, University of Hyogo
| | - Masahiro Tomita
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University
| | - Masato Suzuki
- Graduate School of Material Science, University of Hyogo
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Strehmel C, Perez-Hernandez H, Zhang Z, Löbus A, Lasagni AF, Lensen MC. Geometric Control of Cell Alignment and Spreading within the Confinement of Antiadhesive Poly(Ethylene Glycol) Microstructures on Laser-Patterned Surfaces. ACS Biomater Sci Eng 2015; 1:747-752. [PMID: 33445251 DOI: 10.1021/ab5001657] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, a mask-less laser-assisted patterning method is used to fabricate well-defined cell-adhesive microdomains delimited by protein-repellent poly(ethylene glycol) (PEG) microstructures prepared from multiarm (8-PEG) macromonomers. The response of murine fibroblasts (L-929) toward these microdomains is investigated, revealing effective cell confinement within the cell-adhesive areas surrounded by nonadhesive 8-PEG microstructures. Moreover, the spatial positioning of cells in microdomains of various sizes and geometries is analyzed, indicating control of cell density, size, and elongated cell shape induced by the size of the microdomains and the geometric confinement.
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Affiliation(s)
- Christine Strehmel
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, D-10623 Berlin, Germany
| | - Heidi Perez-Hernandez
- Institute of Manufacturing Technology, Technische Universität Dresden, George-Bähr-Straße 3c, D-01062 Dresden, Germany.,Fraunhofer Institute for Material and Beam Technology IWS, Winterbergstraße 28, D-01277 Dresden, Germany
| | - Zhenfang Zhang
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, D-10623 Berlin, Germany
| | - Axel Löbus
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, D-10623 Berlin, Germany
| | - Andrés F Lasagni
- Institute of Manufacturing Technology, Technische Universität Dresden, George-Bähr-Straße 3c, D-01062 Dresden, Germany.,Fraunhofer Institute for Material and Beam Technology IWS, Winterbergstraße 28, D-01277 Dresden, Germany
| | - Marga C Lensen
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, D-10623 Berlin, Germany
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Wasserberg D, Uhlenheuer DA, Neirynck P, Cabanas-Danés J, Schenkel JH, Ravoo BJ, An Q, Huskens J, Milroy LG, Brunsveld L, Jonkheijm P. Immobilization of Ferrocene-Modified SNAP-Fusion Proteins. Int J Mol Sci 2013; 14:4066-80. [PMID: 23429193 PMCID: PMC3588085 DOI: 10.3390/ijms14024066] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 02/04/2013] [Accepted: 02/04/2013] [Indexed: 12/16/2022] Open
Abstract
The supramolecular assembly of proteins on surfaces has been investigated via the site-selective incorporation of a supramolecular moiety on proteins. To this end, fluorescent proteins have been site-selectively labeled with ferrocenes, as supramolecular guest moieties, via SNAP-tag technology. The assembly of guest-functionalized SNAP-fusion proteins on cyclodextrin- and cucurbit[7]uril-coated surfaces yielded stable monolayers. The binding of all ferrocene fusion proteins is specific as determined by surface plasmon resonance. Micropatterns of the fusion proteins, on patterned cyclodextrin and cucurbituril surfaces, have been visualized using fluorescence microscopy. The SNAP-fusion proteins were also immobilized on cyclodextrin vesicles. The supramolecular SNAP-tag labeling of proteins, thus, allows for the assembly of modified proteins via supramolecular host-guest interaction on different surfaces in a controlled manner. These findings extend the toolbox of fabricating supramolecular protein patterns on surfaces taking advantage of the high labeling efficiency of the SNAP-tag with versatile supramolecular moieties.
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Affiliation(s)
- Dorothee Wasserberg
- Molecular NanoFabrication Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands; E-Mails: (D.W.); (J.C.-D.); (Q.A.); (J.H.)
| | - Dana A. Uhlenheuer
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands; E-Mails: (D.A.U.); (P.N.); (L.-G.M.)
| | - Pauline Neirynck
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands; E-Mails: (D.A.U.); (P.N.); (L.-G.M.)
| | - Jordi Cabanas-Danés
- Molecular NanoFabrication Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands; E-Mails: (D.W.); (J.C.-D.); (Q.A.); (J.H.)
| | - Jan Hendrik Schenkel
- Institute of Organic Chemistry, Westfaelische Wilhelms-Universität Muenster, Corrensstrasse 40, 48149 Münster, Germany; E-Mails: (J.H.S.); (B.J.R.)
| | - Bart Jan Ravoo
- Institute of Organic Chemistry, Westfaelische Wilhelms-Universität Muenster, Corrensstrasse 40, 48149 Münster, Germany; E-Mails: (J.H.S.); (B.J.R.)
| | - Qi An
- Molecular NanoFabrication Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands; E-Mails: (D.W.); (J.C.-D.); (Q.A.); (J.H.)
| | - Jurriaan Huskens
- Molecular NanoFabrication Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands; E-Mails: (D.W.); (J.C.-D.); (Q.A.); (J.H.)
| | - Lech-Gustav Milroy
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands; E-Mails: (D.A.U.); (P.N.); (L.-G.M.)
| | - Luc Brunsveld
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands; E-Mails: (D.A.U.); (P.N.); (L.-G.M.)
- Authors to whom correspondence should be addressed; E-Mails: (L.B.); (P.J.); Tel.: +31-53-489-2987 (P.J.); Fax: +31-53-489-4546 (P.J.)
| | - Pascal Jonkheijm
- Molecular NanoFabrication Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands; E-Mails: (D.W.); (J.C.-D.); (Q.A.); (J.H.)
- Authors to whom correspondence should be addressed; E-Mails: (L.B.); (P.J.); Tel.: +31-53-489-2987 (P.J.); Fax: +31-53-489-4546 (P.J.)
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Perez-Hernandez H, Paumer T, Pompe T, Werner C, Lasagni AF. Contactless laser-assisted patterning of surfaces for bio-adhesive microarrays. Biointerphases 2012; 7:35. [PMID: 22589077 DOI: 10.1007/s13758-012-0035-9] [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: 03/28/2012] [Accepted: 04/24/2012] [Indexed: 11/26/2022] Open
Abstract
Micropatterned surfaces with cell adhesive areas, delimited by protein repellent microstructures, are in high demand for its potential use as relevant biological assays. This is not only because such surfaces allow directing cell growth in a spatially localized and restricted manner, but also because they can be used to elucidate basic cell growth and orientation mechanisms. Here, it is presented a laser-assisted micropatterning technique to fabricate large area microstructures of poly (ethylene glycol) hydrogel onto a cell adhesive surface: a biofunctional maleic anhydride copolymer. By varying photoinitiator, laser intensity, copolymer as well as the hydrogel layer thickness, the optimum conditions to produce high quality features were found. The suitability of these micropatterned substrates for bioassay applications was proved by cell adhesion studies. The introduced procedure could be used to prepare a broad range of microarrays for certain bioanalytical approaches and to create different types of biofunctional surfaces.
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Affiliation(s)
- H Perez-Hernandez
- Fraunhofer Institut für Werkstoff -und Strahltechnik (IWS), Winterbergstrasse 28, 01277, Dresden, Germany
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