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Bhattacharya K, Kalita U, Singha NK. Tailor-made Glycopolymers via Reversible Deactivation Radical Polymerization: Design, Properties and Applications. Polym Chem 2022. [DOI: 10.1039/d1py01640g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Investigating the underlying mechanism of biological interactions using glycopolymer is becoming increasingly important owing to their unique recognition properties. The multivalent interactions between lectin and glycopolymer are significantly influenced by...
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Anthi J, Kolivoška V, Holubová B, Vaisocherová-Lísalová H. Probing polymer brushes with electrochemical impedance spectroscopy: a mini review. Biomater Sci 2021; 9:7379-7391. [PMID: 34693954 DOI: 10.1039/d1bm01330k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Polymer brushes are frequently used as surface-tethered antifouling layers in biosensors to improve sensor surface-analyte recognition in the presence of abundant non-target molecules in complex biological samples by suppressing nonspecific interactions. However, because brushes are complex systems highly responsive to changes in their surrounding environment, studying their properties remains a challenge. Electrochemical impedance spectroscopy (EIS) is an emerging method in this context. In this mini review, we aim to elucidate the potential of EIS for investigating the physicochemical properties and structural aspects of polymer brushes. The application of EIS in brush-based biosensors is also discussed. Most common principles employed in these biosensors are presented, as well as interpretation of EIS data obtained in such setups. Overall, we demonstrate that the EIS-polymer brush pairing has a considerable potential for providing new insights into brush functionalities and designing highly sensitive and specific biosensors.
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Affiliation(s)
- Judita Anthi
- Institute of Physics of the CAS, Na Slovance 2, 182 21 Prague, Czech Republic. .,Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
| | - Viliam Kolivoška
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 182 23 Prague, Czech Republic.
| | - Barbora Holubová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
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Qin Q, Lang S, Huang X. Synthetic linear glycopolymers and their biological applications. J Carbohydr Chem 2021; 40:1-44. [DOI: 10.1080/07328303.2021.1928156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Qian Qin
- Department of Chemistry, Michigan StateUniversity, East Lansing, MI, USA
| | - Shuyao Lang
- Department of Chemistry, Michigan StateUniversity, East Lansing, MI, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
| | - Xuefei Huang
- Department of Chemistry, Michigan StateUniversity, East Lansing, MI, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI, USA
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4
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Heine V, Kremers T, Menzel N, Schnakenberg U, Elling L. Electrochemical Impedance Spectroscopy Biosensor Enabling Kinetic Monitoring of Fucosyltransferase Activity. ACS Sens 2021; 6:1003-1011. [PMID: 33595293 DOI: 10.1021/acssensors.0c02206] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Monitoring glycosyltransferases on biosensors is of great interest for pathogen and cancer diagnostics. As a proof of concept, we here demonstrate the layer-by-layer immobilization of a multivalent neoglycoprotein (NGP) as a substrate for a bacterial fucosyltransferase (FucT) and the subsequent binding of the fucose-specific Aleuria aurantia lectin (AAL) on an electrochemical impedance spectroscopy (EIS) sensor. We report for the first time the binding kinetics of a glycosyltransferase in real-time. Highly stable EIS measurements are obtained by the modification of counter and reference electrodes with polypyrrole: polystyrene sulfonate (PPy:PSS). In detail, the N-acetyllactosamine (LacNAc)-carrying NGP was covalently immobilized on the gold working electrode and served as a substrate for the FucT-catalyzed reaction. The LacNAc epitopes were converted to Lewisx (Lex) and detected by AAL. AAL binding to the Lex epitope was further confirmed in a lectin displacement and a competitive lectin binding inhibition experiment. We monitored the individual kinetic processes via EIS. The time constant for covalent immobilization of the NGP was 653 s. The FucT kinetics was the slowest process with a time constant of 1121 s. In contrast, a short time constant of 11.8 s was determined for the interaction of AAL with the modified NGPs. When this process was competed by 400 mM fucose, the binding was significantly slowed down, as indicated by a time constant of 978 s. The kinetics for the displacement of bound AAL by free fucose was observed with a time constant of 424 s. We conclude that this novel EIS biosensor and the applied workflow has the potential to detect FucT and other GT activities in general and further monitor protein-glycan interactions, which may be useful for the detection of pathogenic bacteria and cancer cells in future biomedical applications.
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Affiliation(s)
- Viktoria Heine
- Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße 20, D-52074 Aachen, Germany
| | - Tom Kremers
- Chair of Micro- and Nanosystems and Institute of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstraße 24, D-52074 Aachen, Germany
| | - Nora Menzel
- Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße 20, D-52074 Aachen, Germany
- Chair of Micro- and Nanosystems and Institute of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstraße 24, D-52074 Aachen, Germany
| | - Uwe Schnakenberg
- Chair of Micro- and Nanosystems and Institute of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstraße 24, D-52074 Aachen, Germany
| | - Lothar Elling
- Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße 20, D-52074 Aachen, Germany
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5
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Kremers T, Tintelott M, Pachauri V, Vu XT, Ingebrandt S, Schnakenberg U. Microelectrode Combinations of Gold and Polypyrrole Enable Highly Stable Two‐electrode Electrochemical Impedance Spectroscopy Measurements under Turbulent Flow Conditions. ELECTROANAL 2020. [DOI: 10.1002/elan.202060105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tom Kremers
- Institute of Materials in Electrical Engineering 1 RWTH Aachen University Sommerfeldstraße 24 D-52074 Aachen Germany
| | - Marcel Tintelott
- Institute of Materials in Electrical Engineering 1 RWTH Aachen University Sommerfeldstraße 24 D-52074 Aachen Germany
| | - Vivek Pachauri
- Institute of Materials in Electrical Engineering 1 RWTH Aachen University Sommerfeldstraße 24 D-52074 Aachen Germany
| | - Xuan Thang Vu
- Institute of Materials in Electrical Engineering 1 RWTH Aachen University Sommerfeldstraße 24 D-52074 Aachen Germany
| | - Sven Ingebrandt
- Institute of Materials in Electrical Engineering 1 RWTH Aachen University Sommerfeldstraße 24 D-52074 Aachen Germany
| | - Uwe Schnakenberg
- Institute of Materials in Electrical Engineering 1 RWTH Aachen University Sommerfeldstraße 24 D-52074 Aachen Germany
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Mirzaei Garakani T, Sauer DF, Mertens MAS, Lazar J, Gehrmann J, Arlt M, Schiffels J, Schnakenberg U, Okuda J, Schwaneberg U. FhuA–Grubbs–Hoveyda Biohybrid Catalyst Embedded in a Polymer Film Enables Catalysis in Neat Substrates. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Daniel F. Sauer
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | | | - Jaroslav Lazar
- Institute of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstr. 24, 52074 Aachen, Germany
| | - Julia Gehrmann
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany
| | - Marcus Arlt
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany
| | - Johannes Schiffels
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany
| | - Uwe Schnakenberg
- Institute of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstr. 24, 52074 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany
- DWI—Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, D-52056 Aachen, Germany
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7
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Ribeiro JPM, Mendonça PV, Coelho JFJ, Matyjaszewski K, Serra AC. Glycopolymer Brushes by Reversible Deactivation Radical Polymerization: Preparation, Applications, and Future Challenges. Polymers (Basel) 2020; 12:E1268. [PMID: 32492977 PMCID: PMC7362234 DOI: 10.3390/polym12061268] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/26/2020] [Accepted: 05/29/2020] [Indexed: 12/27/2022] Open
Abstract
The cellular surface contains specific proteins, also known as lectins, that are carbohydrates receptors involved in different biological events, such as cell-cell adhesion, cell recognition and cell differentiation. The synthesis of well-defined polymers containing carbohydrate units, known as glycopolymers, by reversible deactivation radical polymerization (RDRP) methods allows the development of tailor-made materials with high affinity for lectins because of their multivalent interaction. These polymers are promising candidates for the biomedical field, namely as novel diagnostic disease markers, biosensors, or carriers for tumor-targeted therapy. Although linear glycopolymers are extensively studied for lectin recognition, branched glycopolymeric structures, such as polymer brushes can establish stronger interactions with lectins. This specific glycopolymer topology can be synthesized in a bottlebrush form or grafted to/from surfaces by using RDRP methods, allowing a precise control over molecular weight, grafting density, and brush thickness. Here, the preparation and application of glycopolymer brushes is critically discussed and future research directions on this topic are suggested.
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Affiliation(s)
- Jessica P. M. Ribeiro
- Department of Chemical Engineering, Centre for Mechanical Engineering, Materials and Processes, University of Coimbra, Rua Sílvio Lima-Polo II, 3030-790 Coimbra, Portugal; (J.P.M.R.); (J.F.J.C.)
| | - Patrícia V. Mendonça
- Department of Chemical Engineering, Centre for Mechanical Engineering, Materials and Processes, University of Coimbra, Rua Sílvio Lima-Polo II, 3030-790 Coimbra, Portugal; (J.P.M.R.); (J.F.J.C.)
| | - Jorge F. J. Coelho
- Department of Chemical Engineering, Centre for Mechanical Engineering, Materials and Processes, University of Coimbra, Rua Sílvio Lima-Polo II, 3030-790 Coimbra, Portugal; (J.P.M.R.); (J.F.J.C.)
| | - Krzysztof Matyjaszewski
- Department of Materials Science & Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA;
| | - Arménio C. Serra
- Department of Chemical Engineering, Centre for Mechanical Engineering, Materials and Processes, University of Coimbra, Rua Sílvio Lima-Polo II, 3030-790 Coimbra, Portugal; (J.P.M.R.); (J.F.J.C.)
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8
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Hoffmann M, Gau E, Braun S, Pich A, Elling L. Enzymatic Synthesis of 2-(β-Galactosyl)-ethyl Methacrylate by β-Galactosidase from Pyrococcus woesei and Application for Glycopolymer Synthesis and Lectin Studies. Biomacromolecules 2020; 21:974-987. [DOI: 10.1021/acs.biomac.9b01647] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Marius Hoffmann
- Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße. 20, 52074 Aachen, Germany
| | - Elisabeth Gau
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
- DWI—Leibniz-Institute for Interactive Materials e.V., RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Susanne Braun
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
- DWI—Leibniz-Institute for Interactive Materials e.V., RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Andrij Pich
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
- DWI—Leibniz-Institute for Interactive Materials e.V., RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
- Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Lothar Elling
- Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße. 20, 52074 Aachen, Germany
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Real-Time Single Cell Monitoring: Measurement and Counting of Motile Sperm Using LCR Impedance-Integrated Microfluidic Device. MICROMACHINES 2019; 10:mi10100647. [PMID: 31561484 PMCID: PMC6843681 DOI: 10.3390/mi10100647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/11/2019] [Accepted: 09/23/2019] [Indexed: 12/27/2022]
Abstract
In this research, we aimed to count the ratio of the number of motile to immotile sperm for patients with infertility problems based on a low-sperm-concentration examination. The microfluidic system consists of two series of applications: The conventional separation of motile sperm and the proposed inductance (L), capacitance (C), and resistance (R) or LCR impedance sperm counter. In the experiment, 96% of motile sperm were isolated from nonmotile sperm in the first part and transported to the second part to count and calculate real-time sperm concentration. A pair of microelectrodes composed of thin metal film were integrated between microchannels, resulting in a peak signal for LCR single-cell detection, as well as the estimated total sperm concentration. A minimum of 10 µL of the sperm sample was completely analyzed with an accuracy of 94.8% compared with the standard computer-assisted semen analysis (CASA) method. This method could be applied for low-cost sperm separation and counting in the future.
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Mirzaei Garakani T, Liu Z, Glebe U, Gehrmann J, Lazar J, Mertens MAS, Möller M, Hamzelui N, Zhu L, Schnakenberg U, Böker A, Schwaneberg U. In Situ Monitoring of Membrane Protein Insertion into Block Copolymer Vesicle Membranes and Their Spreading via Potential-Assisted Approach. ACS APPLIED MATERIALS & INTERFACES 2019; 11:29276-29289. [PMID: 31329408 DOI: 10.1021/acsami.9b09302] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Synthosomes are polymer vesicles with transmembrane proteins incorporated into block copolymer membranes. They have been used for selective transport in or out of the vesicles as well as catalysis inside the compartments. However, both the insertion process of the membrane protein, forming nanopores, and the spreading of the vesicles on planar substrates to form solid-supported biomimetic membranes have been rarely studied yet. Herein, we address these two points and, first, shed light on the real-time monitoring of protein insertion via isothermal titration calorimetry. Second, the spreading process on different solid supports, namely, SiO2, glass, and gold, via different techniques like spin- and dip-coating as well as a completely new approach of potential-assisted spreading on gold surfaces was studied. While inhomogeneous layers occur via traditional methods, our proposed potential-assisted strategy to induce adsorption of positively charged vesicles by applying negative potential on the electrode leads to remarkable vesicle spreading and their further fusion to form more homogeneous planar copolymer films on gold. The polymer vesicles in our study are formed from amphiphilic copolymers poly(2-methyl oxazoline)-block-poly(dimethylsiloxane)-block-poly(2-methyl oxazoline) (PMOXA-b-PDMS-b-PMOXA). Engineered variants of the transmembrane protein ferric hydroxamate uptake protein component A (FhuA), one of the largest β-barrel channel proteins, are used as model nanopores. The incorporation of FhuA Δ1-160 is shown to facilitate the vesicle spreading process further. Moreover, high accessibility of cysteine inside the channel was proven by linkage of a fluorescent dye inside the engineered variant FhuA ΔCVFtev and hence preserved functionality of the channels after spreading. The porosity and functionality of the spread synthosomes on the gold plates have been examined by studying the passive ion transport response in the presence of Li+ and ClO4- ions and electrochemical impedance spectroscopy analysis. Our approach to form solid-supported biomimetic membranes via the potential-assisted strategy could be important for the development of new (bio-) sensors and membranes.
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Affiliation(s)
- Tayebeh Mirzaei Garakani
- Institute of Biotechnology , RWTH Aachen University , Worringer Weg 3 , D-52074 Aachen , Germany
- DWI - Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , D-52074 , Aachen , Germany
| | - Zhanzhi Liu
- Institute of Biotechnology , RWTH Aachen University , Worringer Weg 3 , D-52074 Aachen , Germany
| | - Ulrich Glebe
- Fraunhofer Institute for Applied Polymer Research IAP , Geiselbergstraße 69 , 14476 Potsdam -Golm, Germany
- Chair of Polymer Materials and Polymer Technologies, Institute of Chemistry , University of Potsdam , Karl-Liebknecht-Str. 24-25 , 14476 Potsdam -Golm, Germany
| | - Julia Gehrmann
- Institute of Biotechnology , RWTH Aachen University , Worringer Weg 3 , D-52074 Aachen , Germany
| | - Jaroslav Lazar
- Institute of Materials in Electrical Engineering 1 , RWTH Aachen University , Sommerfeldstraße 24 , 52074 Aachen , Germany
| | | | - Mieke Möller
- Institute of Biotechnology , RWTH Aachen University , Worringer Weg 3 , D-52074 Aachen , Germany
| | - Niloofar Hamzelui
- Institute of Biotechnology , RWTH Aachen University , Worringer Weg 3 , D-52074 Aachen , Germany
| | - Leilei Zhu
- Institute of Biotechnology , RWTH Aachen University , Worringer Weg 3 , D-52074 Aachen , Germany
| | - Uwe Schnakenberg
- Institute of Materials in Electrical Engineering 1 , RWTH Aachen University , Sommerfeldstraße 24 , 52074 Aachen , Germany
| | - Alexander Böker
- Fraunhofer Institute for Applied Polymer Research IAP , Geiselbergstraße 69 , 14476 Potsdam -Golm, Germany
- Chair of Polymer Materials and Polymer Technologies, Institute of Chemistry , University of Potsdam , Karl-Liebknecht-Str. 24-25 , 14476 Potsdam -Golm, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology , RWTH Aachen University , Worringer Weg 3 , D-52074 Aachen , Germany
- DWI - Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , D-52074 , Aachen , Germany
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11
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Functional Glyco-Nanogels for Multivalent Interaction with Lectins. Molecules 2019; 24:molecules24101865. [PMID: 31096570 PMCID: PMC6572176 DOI: 10.3390/molecules24101865] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/03/2019] [Accepted: 05/14/2019] [Indexed: 12/31/2022] Open
Abstract
Interactions between glycans and proteins have tremendous impact in biomolecular interactions. They are important for cell–cell interactions, proliferation and much more. Here, we emphasize the glycan-mediated interactions between pathogens and host cells. Pseudomonas aeruginosa, responsible for a huge number of nosocomial infections, is especially the focus when it comes to glycan-derivatives as pathoblockers. We present a microwave assisted protecting group free synthesis of glycomonomers based on lactose, melibiose and fucose. The monomers were polymerized in a precipitation polymerization in the presence of NiPAm to form crosslinked glyco-nanogels. The influence of reaction parameters like crosslinker type or stabilizer amount was investigated. The gels were characterized in lectin binding studies using model lectins and showed size and composition-dependent inhibition of lectin binding. Due to multivalent presentation of glycans in the gel, the inhibition was clearly stronger than with unmodified saccharides, which was compared after determination of the glycan loading. First studies with Pseudomonas aeruginosa revealed a surprising influence on the secretion of virulence factors. Functional glycogels may be in the future potent alternatives or adjuvants for antibiotic treatment of infections based on glycan interactions between host and pathogen.
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Maß TWW, Nguyen VH, Schnakenberg U, Taubner T. Tailoring grating strip widths for optimizing infrared absorption signals of an adsorbed molecular monolayer. OPTICS EXPRESS 2019; 27:10524-10532. [PMID: 31052910 DOI: 10.1364/oe.27.010524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
Metal structures with resonances in the mid-infrared spectral range enable an increased sensitivity for detecting molecular vibrational signals. 1D gold strip gratings have already proven potential in surface-enhanced infrared absorption (SEIRA) experiments, as grating resonances and local electric field enhancement can be spectrally tuned by changing the grating period. Here, we identify the grating strip width as another important design parameter, which is investigated for further optimization of molecular absorption signal enhancement in SEIRA experiments. Previous literature used gratings to increase light absorption in relatively thick polymer layers. Here, we demonstrate the capability of gold strip gratings fabricated on a CaF2 substrate to enhance the CH2 vibrational modes of a thiol-based monolayer of MHDA. An optimal choice of the strip width w = 1.33 μm enables a maximum vibrational signal enhancement factor of around 84, when normalized to microscopic GIR measurements of an MHDA monolayer on an extended gold surface. Numerical simulations demonstrate the broadband local field enhancement of gold strip gratings, which are suitable for enhancing multiple vibrational modes in a large hot-spot volume.
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13
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Schulte-Osseili C, Kleinert M, Keil N, Rosencrantz RR. Rapid Drop-Test for Lectin Binding with Glycopolymer-Coated Optical Ring Resonators. BIOSENSORS-BASEL 2019; 9:bios9010024. [PMID: 30759839 PMCID: PMC6469017 DOI: 10.3390/bios9010024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/25/2019] [Accepted: 02/06/2019] [Indexed: 11/20/2022]
Abstract
We fabricated a simple sensor system for qualitative analysis of glycan-mediated interactions. Our main aim was to establish a ronbbust system that allowes drop-tests without complex fluidics. The test system should be usable in routine analytics in the future and bear sufficient sensitivity to detect binding events in the nanomolar range. For this, we employed optical ring resonators and coated them with high avidity glycopolymers based on N-acetylglucosamine (GlcNAc). These hydrophilic polymers are also very feasible in preventing unspecific protein adsorption. Drop-on binding studies with suitable lectins showed that glycopolymers were specifically recognized by a lectin with GlcNAc-specificity and prevented unspecific protein interactions very well. The system could be elaborated in the future for detection of glycan-mediated interactions in the biomedical field and is promising in means of multiplexed analysis and usage in routine analysis.
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Affiliation(s)
| | - Moritz Kleinert
- Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI, Einsteinufer 37, 10587 Berlin, Germany.
| | - Norbert Keil
- Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI, Einsteinufer 37, 10587 Berlin, Germany.
| | - Ruben R Rosencrantz
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam, Germany.
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14
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Pramudya I, Chung H. Recent progress of glycopolymer synthesis for biomedical applications. Biomater Sci 2019; 7:4848-4872. [DOI: 10.1039/c9bm01385g] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Glycopolymers are an important class of biomaterials which include carbohydrate moieties in their polymer structure.
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Affiliation(s)
- Irawan Pramudya
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
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15
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Hadjicharalambous C, Flouraki C, Narain R, Chatzinikolaidou M, Vamvakaki M. Controlling pre-osteoblastic cell adhesion and spreading on glycopolymer brushes of variable film thickness. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:98. [PMID: 29946888 DOI: 10.1007/s10856-018-6112-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 06/18/2018] [Indexed: 06/08/2023]
Abstract
Controlling the cell behavior on biocompatible polymer surfaces is critical for the development of suitable medical implant coatings as well as in anti-adhesive applications. Synthetic glycopolymer brushes, based on sugar methacrylate monomers have been reported as robust surfaces to resist protein adsorption and cell adhesion. In this study, poly(D-gluconamidoethyl methacrylate) (PGAMA) brushes of various chain lengths were synthesized directly from initiator functionalized glass substrates using surface-initiated atom transfer radical polymerization. The glycopolymer film thicknesses were determined by ellipsometry, whereas the wettability and the morphology of the surfaces were characterized by static water contact angle measurements and atomic force microscopy, respectively. Stable, grafted films with thicknesses in the dry state between 4 and 20 nm and of low roughness (~1 nm) were obtained by varying the polymerization time. Cell experiments with MC3T3-E1 pre-osteoblasts cultured on the PGAMA brushes were performed to examine the effect of film thickness on the cell morphology, cytoskeleton organization and growth. The results revealed good cell spreading and proliferation on PGAMA layers of low film thickness, whereas cell adhesion was prevented on polymer films with thickness higher than ~10 nm, indicating their potential use in medical implants and anti-adhesive surfaces, respectively.
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Affiliation(s)
- Chrystalleni Hadjicharalambous
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, Heraklion, 711 10, Crete, Greece
- Department of Materials Science and Technology, University of Crete, Heraklion, 710 03, Crete, Greece
| | - Chara Flouraki
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, Heraklion, 711 10, Crete, Greece
- Department of Materials Science and Technology, University of Crete, Heraklion, 710 03, Crete, Greece
| | - Ravin Narain
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, T6G 1H9, Alberta, Canada
| | - Maria Chatzinikolaidou
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, Heraklion, 711 10, Crete, Greece
- Department of Materials Science and Technology, University of Crete, Heraklion, 710 03, Crete, Greece
| | - Maria Vamvakaki
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, Heraklion, 711 10, Crete, Greece.
- Department of Materials Science and Technology, University of Crete, Heraklion, 710 03, Crete, Greece.
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16
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Restuccia A, Hudalla GA. Tuning carbohydrate density enhances protein binding and inhibition by glycosylated β-sheet peptide nanofibers. Biomater Sci 2018; 6:2327-2335. [DOI: 10.1039/c8bm00533h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The efficacy of glycosylated β-sheet peptide nanofibers for inhibiting carbohydrate-binding proteins can be increased by tuning carbohydrate density to maximize protein binding affinity.
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Affiliation(s)
- Antonietta Restuccia
- J. Crayton Pruitt Family Department of Biomedical Engineering
- University of Florida
- Gainesville
- USA 32611
| | - Gregory A. Hudalla
- J. Crayton Pruitt Family Department of Biomedical Engineering
- University of Florida
- Gainesville
- USA 32611
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17
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Huckabee AG, Yerneni C, Jacobson RE, Alzate EJ, Chen TH, Wirth MJ. In-column bonded phase polymerization for improved packing uniformity. J Sep Sci 2017; 40:2170-2177. [PMID: 28387037 DOI: 10.1002/jssc.201601376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 03/16/2017] [Accepted: 03/16/2017] [Indexed: 11/10/2022]
Abstract
It is difficult to pack chromatographic particles having polymeric-bonded phases because solvents used for making a stable slurry cause the polymer layer to swell. Growth of the polymer inside the column (in situ) after packing was investigated and compared with conventional, ex situ polymer growth. The method of activators generated by electron transfer, along with atom-transfer radical polymerization, enabled polymerization under ambient conditions. Nonporous, 0.62 μm silica particles with silane initiators were used. Polyacrylamide films with a hydrated thickness of 23 nm in 75:25 water/isopropanol grew in 55 min for both in situ and ex situ preparations, and the same carbon coverage was observed. Higher chromatographic resolution and better column-to-column reproducibility were observed for in situ polymer growth, as evaluated by hydrophilic interaction liquid chromatography for the model glycoprotein, ribonuclease B. In situ polymer growth was also found to give lower eddy diffusion, as shown by a narrower peak width for injected acetonitrile in 50:50 acetonitrile/water. When columns were packed more loosely, bed collapse occurred quickly for ex situ, but not for in situ, polymer growth. The higher resolution and stability for in situ polymer growth is explained by packing with hard, rather than soft, contacts between particles.
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Affiliation(s)
| | - Charu Yerneni
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | | | - Edwin J Alzate
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | - Tse-Hong Chen
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | - Mary J Wirth
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
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18
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Zoppe JO, Ataman NC, Mocny P, Wang J, Moraes J, Klok HA. Surface-Initiated Controlled Radical Polymerization: State-of-the-Art, Opportunities, and Challenges in Surface and Interface Engineering with Polymer Brushes. Chem Rev 2017; 117:1105-1318. [PMID: 28135076 DOI: 10.1021/acs.chemrev.6b00314] [Citation(s) in RCA: 587] [Impact Index Per Article: 83.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The generation of polymer brushes by surface-initiated controlled radical polymerization (SI-CRP) techniques has become a powerful approach to tailor the chemical and physical properties of interfaces and has given rise to great advances in surface and interface engineering. Polymer brushes are defined as thin polymer films in which the individual polymer chains are tethered by one chain end to a solid interface. Significant advances have been made over the past years in the field of polymer brushes. This includes novel developments in SI-CRP, as well as the emergence of novel applications such as catalysis, electronics, nanomaterial synthesis and biosensing. Additionally, polymer brushes prepared via SI-CRP have been utilized to modify the surface of novel substrates such as natural fibers, polymer nanofibers, mesoporous materials, graphene, viruses and protein nanoparticles. The last years have also seen exciting advances in the chemical and physical characterization of polymer brushes, as well as an ever increasing set of computational and simulation tools that allow understanding and predictions of these surface-grafted polymer architectures. The aim of this contribution is to provide a comprehensive review that critically assesses recent advances in the field and highlights the opportunities and challenges for future work.
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Affiliation(s)
- Justin O Zoppe
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Nariye Cavusoglu Ataman
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Piotr Mocny
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Jian Wang
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - John Moraes
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
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19
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Akiba U, Anzai JI. Recent Progress in Electrochemical Biosensors for Glycoproteins. SENSORS (BASEL, SWITZERLAND) 2016; 16:E2045. [PMID: 27916961 PMCID: PMC5191026 DOI: 10.3390/s16122045] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/22/2016] [Accepted: 11/29/2016] [Indexed: 12/20/2022]
Abstract
This review provides an overview of recent progress in the development of electrochemical biosensors for glycoproteins. Electrochemical glycoprotein sensors are constructed by combining metal and carbon electrodes with glycoprotein-selective binding elements including antibodies, lectin, phenylboronic acid and molecularly imprinted polymers. A recent trend in the preparation of glycoprotein sensors is the successful use of nanomaterials such as graphene, carbon nanotube, and metal nanoparticles. These nanomaterials are extremely useful for improving the sensitivity of glycoprotein sensors. This review focuses mainly on the protocols for the preparation of glycoprotein sensors and the materials used. Recent improvements in glycoprotein sensors are discussed by grouping the sensors into several categories based on the materials used as recognition elements.
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Affiliation(s)
- Uichi Akiba
- Graduate School of Engineering and Science, Akita University, 1-1 Tegatagaluenn-machi, Akita 010-8502, Japan.
| | - Jun-Ichi Anzai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Aramakim, Sendai 980-8578, Japan.
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20
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Kojori HS, Ji Y, Paik Y, Braunschweig AB, Kim SJ. Monitoring interfacial lectin binding with nanomolar sensitivity using a plasmon field effect transistor. NANOSCALE 2016; 8:17357-17364. [PMID: 27714196 DOI: 10.1039/c6nr05544c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
By immobilizing glycopolymers onto the surface of the recently developed plasmonic field effect transistor (FET), the recognition between lectins and surface-immobilized glycopolymers can be detected over a wide dynamic range (10-10 to 10-4 M) in an environment that resembles the glycocalyx. The binding to the sensor surface by various lectins was tested, and the selectivities and relative binding affinity trends observed in solution were maintained on the sensor surface, and the significantly higher avidities are attributed to cluster-glycoside effects that occur on the surface. The combination of polymer surface chemistry and optoelectronic output in this device architecture produces amongst the highest reported detection sensitivity for ConA. This work demonstrates the benefits that arise from combining emerging device architectures and soft-matter systems to create cutting edge nanotechnologies that lend themselves to fundamental biological studies and integration into point-of-use diagnostics and sensors.
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Affiliation(s)
- Hossein Shokri Kojori
- Department of Electrical and Computer Engineering, University of Miami, Miami, Florida 33124, USA.
| | - Yiwen Ji
- Department of Chemistry, University of Miami, Miami, Florida 33124, USA
| | - Younghun Paik
- Department of Electrical and Computer Engineering, University of Miami, Miami, Florida 33124, USA.
| | - Adam B Braunschweig
- Department of Chemistry, University of Miami, Miami, Florida 33124, USA and Advanced Science Research Center (ASRC), City University of New York, New York, New York 10031, USA. and Department of Chemistry and Biochemistry, City University of New York-Hunter College, 695 Park Avenue, New York, New York 10065, USA
| | - Sung Jin Kim
- Department of Electrical and Computer Engineering, University of Miami, Miami, Florida 33124, USA. and Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), Miami, Florida 33124, USA
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21
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Lazar J, Rosencrantz RR, Elling L, Schnakenberg U. Simultaneous Electrochemical Impedance Spectroscopy and Localized Surface Plasmon Resonance in a Microfluidic Chip: New Insights into the Spatial Origin of the Signal. Anal Chem 2016; 88:9590-9596. [DOI: 10.1021/acs.analchem.6b02307] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jaroslav Lazar
- Institute
of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstrasse 24, 52074 Aachen, Germany
| | - Ruben R. Rosencrantz
- Laboratory
for Biomaterials, Institute for Biotechnology and Helmholtz-Institute
for Biomedical Engineering, RWTH Aachen University, Pauwelsstrasse
20, 52074 Aachen, Germany
| | - Lothar Elling
- Laboratory
for Biomaterials, Institute for Biotechnology and Helmholtz-Institute
for Biomedical Engineering, RWTH Aachen University, Pauwelsstrasse
20, 52074 Aachen, Germany
| | - Uwe Schnakenberg
- Institute
of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstrasse 24, 52074 Aachen, Germany
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22
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Lectin binding studies on a glycopolymer brush flow-through biosensor by localized surface plasmon resonance. Anal Bioanal Chem 2016; 408:5633-40. [DOI: 10.1007/s00216-016-9667-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 05/20/2016] [Accepted: 05/25/2016] [Indexed: 01/01/2023]
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