51
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Dehghani ES, Spencer ND, Ramakrishna SN, Benetti EM. Crosslinking Polymer Brushes with Ethylene Glycol-Containing Segments: Influence on Physicochemical and Antifouling Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10317-10327. [PMID: 27642809 DOI: 10.1021/acs.langmuir.6b02958] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The introduction of different types and concentrations of crosslinks within poly(hydroxyethyl methacrylate) (PHEMA) brushes influences their interfacial, physicochemical properties, ultimately governing their adsorption of proteins. PHEMA brushes and brush-hydrogels were synthesized by surface-initiated, atom-transfer radical polymerization (SI-ATRP) from HEMA, with and without the addition of di(ethylene glycol) dimethacrylate (DEGDMA) or tetra(ethylene glycol) dimethacrylate (TEGDMA) as crosslinkers. Linear (pure PHEMA) brushes show high hydration and low modulus and additionally provide an efficient barrier against nonspecific protein adsorption. In contrast, brush-hydrogels are stiffer and less hydrated, and the presence of crosslinks affects the entropy-driven, conformational barrier that hinders the surface interaction of biomolecules with brushes. This leads to the physisorption of proteins at low concentrations of short crosslinks. At higher contents of DEGDMA or in the presence of longer TEGDMA-based crosslinks, brush-hydrogels recover their antifouling properties due to the increase in interfacial water association by the higher concentration of ethylene glycol (EG) units.
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Affiliation(s)
- Ella S Dehghani
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
| | - Nicholas D Spencer
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
| | - Shivaprakash N Ramakrishna
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
| | - Edmondo M Benetti
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
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52
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Wang HY, Sun Y, Zhang SL, Luo J, Shi QH. Fabrication of high-capacity cation-exchangers for protein chromatography by atom transfer radical polymerization. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.05.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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53
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Li L, Nakaji-Hirabayashi T, Kitano H, Ohno K, Kishioka T, Usui Y. Gradation of proteins and cells attached to the surface of bio-inert zwitterionic polymer brush. Colloids Surf B Biointerfaces 2016; 144:180-187. [DOI: 10.1016/j.colsurfb.2016.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/03/2016] [Accepted: 04/04/2016] [Indexed: 11/30/2022]
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54
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In Vitro Endothelialization Test of Biomaterials Using Immortalized Endothelial Cells. PLoS One 2016; 11:e0158289. [PMID: 27348615 PMCID: PMC4922589 DOI: 10.1371/journal.pone.0158289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 06/13/2016] [Indexed: 11/19/2022] Open
Abstract
Functionalizing biomaterials with peptides or polymers that enhance recruitment of endothelial cells (ECs) can reduce blood coagulation and thrombosis. To assess endothelialization of materials in vitro, primary ECs are generally used, although the characteristics of these cells vary among the donors and change with time in culture. Recently, primary cell lines immortalized by transduction of simian vacuolating virus 40 large T antigen or human telomerase reverse transcriptase have been developed. To determine whether immortalized ECs can substitute for primary ECs in material testing, we investigated endothelialization on biocompatible polymers using three lots of primary human umbilical vein endothelial cells (HUVEC) and immortalized microvascular ECs, TIME-GFP. Attachment to and growth on polymer surfaces were comparable between cell types, but results were more consistent with TIME-GFP. Our findings indicate that TIME-GFP is more suitable for in vitro endothelialization testing of biomaterials.
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55
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Preparation of a thick polymer brush layer composed of poly(2-methacryloyloxyethyl phosphorylcholine) by surface-initiated atom transfer radical polymerization and analysis of protein adsorption resistance. Colloids Surf B Biointerfaces 2016; 141:507-512. [DOI: 10.1016/j.colsurfb.2016.02.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/02/2016] [Accepted: 02/07/2016] [Indexed: 12/20/2022]
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56
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Furusawa H, Sekine T, Ozeki T. Hydration and Viscoelastic Properties of High- and Low-Density Polymer Brushes Using a Quartz-Crystal Microbalance Based on Admittance Analysis (QCM-A). Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00035] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroyuki Furusawa
- Innovative Flex Course for Frontier Organic Material
Systems (iFront), Graduate School of Science and Engineering, Yamagata University,
4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
- Department
of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Tomomi Sekine
- Department
of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Tomomitsu Ozeki
- Department
of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
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57
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Zhuang P, Dirani A, Glinel K, Jonas AM. Temperature Dependence of the Surface and Volume Hydrophilicity of Hydrophilic Polymer Brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3433-3444. [PMID: 27003634 DOI: 10.1021/acs.langmuir.6b00448] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The temperature-dependence of the volume and surface hydrophilicity of a series of water-swollen dense polymer brushes is measured by contact angle measurements in the captive bubble configuration, by ellipsometry, and by quartz crystal microbalance with dissipation monitoring (QCM-D). Thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) and poly(di(methoxyethoxy)ethyl methacrylate) (PMEO2MA), strongly hydrophilic poly(N,N-dimethylacrylamide) (PDMA) and poly(oligo(ethylene glycol) methacrylate) (POEGMA), and weakly hydrophilic poly(2-hydroxyethyl methacrylate) (PHEMA) brushes were synthesized by surface-initiated atom-transfer radical polymerization (SI-ATRP). Conditions leading to reproducible measurements of the contact angle are first provided, giving access to the surface hydrophilicity. Volume hydrophilicity is quantified by measuring the swelling of the brushes, either by QCM-D or by ellipsometry. A model-free methodology is proposed to analyze the QCM-D data. Comparison between the acoustic and optical swelling coefficients shows that QCM-D is sensitive to the maximal thickness of swollen brushes, while ellipsometry provides an integral thickness. Diagrams of surface versus volume hydrophilicity of the brushes finally lead to identify two types of behavior: strongly water-swollen brushes exhibit a progressive decrease of volume hydrophilicity with temperature, while surface hydrophilicity changes moderately; weakly water-swollen brushes have a close-to-constant volume hydrophilicity, while surface hydrophilicity decreases with temperature. Thermoresponsive brushes abruptly switch from one behavior to the other, and do not exhibit an abrupt change of surface hydrophilicity across their collapse transition contrarily to a common erroneous belief. In general, there is no direct correlation between surface and volume hydrophilicity, because surface properties are dependent on the details of conformation and composition at the surface, whereas volume properties are averaged over a finite region within the brush.
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Affiliation(s)
- Pengyu Zhuang
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Ali Dirani
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Karine Glinel
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Alain M Jonas
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
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58
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Li X, Li B, Zhang X, Li C, Guo Z, Zhou D, Lu X. Detecting Surface Hydration of Poly(2-hydroxyethyl methacrylate) in Solution in situ. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00389] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xu Li
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province P. R. China
| | - Bolin Li
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province P. R. China
| | - Xiaodong Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province P. R. China
| | - Chengcheng Li
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province P. R. China
| | - Zhirui Guo
- Department
of Geriatrics, Second Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Dongshan Zhou
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructure, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province P. R. China
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59
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Nagase K, Kobayashi J, Kikuchi A, Akiyama Y, Kanazawa H, Okano T. Thermoresponsive anionic block copolymer brushes with a strongly anionic bottom segment for effective interactions with biomolecules. RSC Adv 2016. [DOI: 10.1039/c6ra20944k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Thermoresponsive anionic block copolymer brushes were prepared on silica bead surfaces by multistep surface-initiated atom-transfer radical polymerization. The anionic properties of the prepared brushes changed with temperature changes.
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Affiliation(s)
- Kenichi Nagase
- Institute of Advanced Biomedical Engineering and Science
- Tokyo Women's Medical University
- TWIns
- Tokyo 162-8666
- Japan
| | - Jun Kobayashi
- Institute of Advanced Biomedical Engineering and Science
- Tokyo Women's Medical University
- TWIns
- Tokyo 162-8666
- Japan
| | - Akihiko Kikuchi
- Department of Materials Science and Technology
- Tokyo University of Science
- Tokyo 125-8585
- Japan
| | - Yoshikatsu Akiyama
- Institute of Advanced Biomedical Engineering and Science
- Tokyo Women's Medical University
- TWIns
- Tokyo 162-8666
- Japan
| | | | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science
- Tokyo Women's Medical University
- TWIns
- Tokyo 162-8666
- Japan
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60
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Shimizu Y, Yoshikawa C, Suzuki J, Qiu J, van den Bosch E. Concentrated polymer brushes do not induce the expression of inflammatory and angiogeneic genes in human umbilical vein endothelial cells. Biotechnol Lett 2015; 38:403-8. [PMID: 26608604 DOI: 10.1007/s10529-015-2005-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 11/17/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVE When polymer brushes are applied as the inner coating for artificial blood vessels, they may induce unwanted responses in vascular endothelial cells continuously exposed to the polymer surface. Accordingly, we have examined the in vitro effect of non-biofouling concentrated polymer brushes (CPBs) on pro-inflammatory and angiogenic responses of human umbilical vein endothelial cells (HUVECs). RESULTS Micro-patterned CPBs were prepared on silicon wafers using biocompatible polymers, poly(poly(ethylene glycol)methyl ether methacrylate) (PPEGMA) and poly(2-hydroxyethyl methacrylate) (PHEMA). HUVECs were cultured on PPEGMA-CPBs and PHEMA-CPBs with different channel widths (20, 50, and 80 µm) and analyzed for mRNA expression of the pro-inflammatory cytokines IL-6 and IL-8 and angiogeneic vascular endothelial growth factor (VEGF). Irrespective of channel width, PHEMA-CPBs reduced the expression of all target genes, whereas PPEGMA-CPBs reduced VEGF and did not affect IL-6 and IL-8 levels. CONCLUSION Micro-patterned CPBs, irrespective of chemical structure or adhesion area, do not induce the expression of important pro-inflammatory and angiogenic mediators in endothelial cells.
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Affiliation(s)
- Yoshihisa Shimizu
- World Premier International Research Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0047, Japan
| | - Chiaki Yoshikawa
- World Premier International Research Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0047, Japan.
| | - Junji Suzuki
- World Premier International Research Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0047, Japan
| | - Jun Qiu
- DSM Ahead, P.O. Box 18, 6160 MD, Geleen, The Netherlands
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61
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Nagahashi K, Teramura Y, Takai M. Stable surface coating of silicone elastomer with phosphorylcholine and organosilane copolymer with cross-linking for repelling proteins. Colloids Surf B Biointerfaces 2015. [DOI: 10.1016/j.colsurfb.2015.07.040] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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62
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Stetsyshyn Y, Raczkowska J, Budkowski A, Kostruba A, Harhay K, Ohar H, Awsiuk K, Bernasik A, Ripak N, Zemła J. Synthesis and Postpolymerization Modification of Thermoresponsive Coatings Based on Pentaerythritol Monomethacrylate: Surface Analysis, Wettability, and Protein Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9675-9683. [PMID: 26253051 DOI: 10.1021/acs.langmuir.5b02285] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Properties of novel temperature-responsive hydroxyl-containing poly(pentaerythritol monomethacrylate) (PPM) coatings, polymerized from oligoperoxide grafted to glass surface premodified with (3-aminopropyl)triethoxysilane, are presented. Molecular composition, chemical state, thickness, and wettability are examined with time of flight-secondary ion mass spectrometry (ToF-SIMS), X-ray photoelectron spectroscopy (XPS), ellipsometry, and contact angle measurements, respectively. Temperature-induced changes in hydrophobicity of grafted PPM brushes are revealed by water contact angle and ellipsometric measurements. Partial postpolymerization modification of hydroxyl groups (maximum a few percent), performed with acetyl chloride or pyromellitic acid chloride, is demonstrated to preserve thermal response of coatings. Adsorption of bovine serum albumin to PPM brushes, observed with fluorescence microscopy, is higher than on glass in contrast to similar hydroxyl-containing layers reported as nonfouling. Enhanced and temperature-controlled protein adsorption is obtained after postpolymerization modification with pyromellitic acid chloride.
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Affiliation(s)
- Yurij Stetsyshyn
- "Lvivska Polytechnika" National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Joanna Raczkowska
- Smoluchowski Institute of Physics, Jagiellonian University , Łojasiewicza 11, 30-348 Kraków, Poland
| | - Andrzej Budkowski
- Smoluchowski Institute of Physics, Jagiellonian University , Łojasiewicza 11, 30-348 Kraków, Poland
| | - Andrij Kostruba
- Lviv Academy of Commerce , Samtshuk 9, Dragomanov 19, 79011 Lviv, Ukraine
- Lviv Institute for Physical Optics , Dragomanov 19, 79011 Lviv, Ukraine
| | - Khrystyna Harhay
- "Lvivska Polytechnika" National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Halyna Ohar
- "Lvivska Polytechnika" National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Kamil Awsiuk
- Smoluchowski Institute of Physics, Jagiellonian University , Łojasiewicza 11, 30-348 Kraków, Poland
| | - Andrzej Bernasik
- AGH University of Science and Technology , Faculty of Physics and Applied Computer Science, al. A. Mickiewicza 30, 30-059 Kraków, Poland
| | - Nazar Ripak
- "Lvivska Polytechnika" National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Joanna Zemła
- Smoluchowski Institute of Physics, Jagiellonian University , Łojasiewicza 11, 30-348 Kraków, Poland
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63
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Liu Y, Inoue Y, Ishihara K. Surface functionalization of quantum dots with fine-structured pH-sensitive phospholipid polymer chains. Colloids Surf B Biointerfaces 2015; 135:490-496. [PMID: 26283498 DOI: 10.1016/j.colsurfb.2015.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 07/31/2015] [Accepted: 08/01/2015] [Indexed: 10/23/2022]
Abstract
To add novel functionality to quantum dots (QDs), we synthesized water-soluble and pH-responsive block-type polymers by reversible addition-fragmentation chain transfer (RAFT) polymerization. The polymers were composed of cytocompatible 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer segments, which contain a small fraction of active ester groups and can be used to conjugate biologically active compounds to the polymer, and pH-responsive poly(2-(N,N-diethylamino) ethyl methacrylate (DEAEMA)) segments. One terminal of the polymer chain had a hydrophobic alkyl group that originated from the RAFT initiator. This hydrophobic group can bind to the hydrophobic layer on the QD surface. A fluorescent dye was conjugated to the polymer chains via the active ester group. The block-type polymers have an amphiphilic nature in aqueous medium. The polymers were thus easily bound to the QD surface upon evaporation of the solvent from a solution containing the block-type polymer and QDs, yielding QD/fluorescence dye-conjugated polymer hybrid nanoparticles. Fluorescence resonance energy transfer (FRET) between the QDs (donors) and the fluorescent dye molecules (acceptors) was used to obtain information on the conformational dynamics of the immobilized polymers. Higher FRET efficiency of the QD/fluorescent dye-conjugated polymer hybrid nanoparticles was observed at pH 7.4 as compared to pH 5.0 due to a stretching-shrinking conformational motion of the poly(DEAEMA) segments in response to changes in pH. We concluded that the block-type MPC polymer-modified nanoparticles could be used to evaluate the pH of cells via FRET fluorescence based on the cytocompatibility of the MPC polymer.
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Affiliation(s)
- Yihua Liu
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuuki Inoue
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazuhiko Ishihara
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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64
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Zhang C, Chen L, Tan L, Zheng X, Wang Y. Poly(dopamine)-assisted preparation of star poly(ethylene glycol)-based coatings: A detailed study of their protein resistance and application in CE. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.05.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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65
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Mochizuki A, Namiki T, Nishimori Y, Ogawa H. Study of the water structure in poly(methyl methacrylate-block-2-hydroxyethyl methacrylate) and its relationship to platelet adhesion on the copolymer surface. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:750-65. [DOI: 10.1080/09205063.2015.1056457] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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66
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Koubková J, Macková H, Proks V, Trchová M, Brus J, Horák D. RAFT of sulfobetaine for modifying poly(glycidyl methacrylate) microspheres to reduce nonspecific protein adsorption. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27681] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jana Koubková
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovského Sq. 2, 162 06 Prague 6 Czech Republic
- Institute of Chemistry and Technology of Macromolecular Materials, Faculty of Chemical Technology; University of Pardubice; Studentská 95, 532 10 Pardubice Czech Republic
| | - Hana Macková
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovského Sq. 2, 162 06 Prague 6 Czech Republic
| | - Vladimír Proks
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovského Sq. 2, 162 06 Prague 6 Czech Republic
| | - Miroslava Trchová
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovského Sq. 2, 162 06 Prague 6 Czech Republic
| | - Jiří Brus
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovského Sq. 2, 162 06 Prague 6 Czech Republic
| | - Daniel Horák
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovského Sq. 2, 162 06 Prague 6 Czech Republic
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67
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Non-biofouling property of well-defined concentrated polymer brushes. Colloids Surf B Biointerfaces 2015; 127:213-20. [DOI: 10.1016/j.colsurfb.2015.01.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 11/12/2014] [Accepted: 01/19/2015] [Indexed: 11/18/2022]
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68
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Fibroblast adhesion on ECM-derived peptide modified poly(2-hydroxyethyl methacrylate) brushes: ligand co-presentation and 3D-localization. Biomaterials 2015; 44:24-35. [PMID: 25617123 DOI: 10.1016/j.biomaterials.2014.12.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 11/28/2014] [Accepted: 12/16/2014] [Indexed: 11/23/2022]
Abstract
Polymer brushes prepared via surface-initiated polymerization of 2-hydroxyethyl methacrylate are powerful platforms for the fabrication of model biointerfaces to study cell-substrate interactions. In this manuscript, the versatility of surface-initiated polymerization and the poly(2-hydroxyethyl methacrylate) (PHEMA) polymer brush platform are used to address two fundamental questions, viz. the effects of ligand co-presentation and of the 3D localization of biochemical cues on cell behavior. Using a series of PHEMA brushes that present RGD and PHSRN ligands in various relative surface concentrations, the present study unequivocally demonstrates that: (i) co-presentation of PHSRN cues on an RGD functionalized substrate enhances cell adhesion and (ii) this synergetic effect is highest when the two ligands are presented at equal surface concentrations. In the second part of this study, adhesion of 3T3 fibroblasts on a series of PHEMA brushes that present the RGD ligand at a distance of 12, 23 or 42 nm away from the cell substrate interface is investigated. While cells were found to adhere to surfaces that presented the cell adhesive peptides at distances up to 23 nm from the interface, polymer brushes that contained the RGD ligands 42 nm away from the interface did not support cell adhesion.
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69
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Nagase K, Hatakeyama Y, Shimizu T, Matsuura K, Yamato M, Takeda N, Okano T. Thermoresponsive Cationic Copolymer Brushes for Mesenchymal Stem Cell Separation. Biomacromolecules 2015; 16:532-40. [DOI: 10.1021/bm501591s] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kenichi Nagase
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Yuri Hatakeyama
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
- Department
of Life Science and Medical Bioscience, School of Advanced Science
and Engineering, Waseda University (TWIns), 2-2 Wakamatsucho, Shinjuku, Tokyo 162-8480, Japan
| | - Tatsuya Shimizu
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Katsuhisa Matsuura
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Masayuki Yamato
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Naoya Takeda
- Department
of Life Science and Medical Bioscience, School of Advanced Science
and Engineering, Waseda University (TWIns), 2-2 Wakamatsucho, Shinjuku, Tokyo 162-8480, Japan
| | - Teruo Okano
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
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70
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Ishihara K, Kitagawa T, Inoue Y. Initial Cell Adhesion on Well-Defined Surface by Polymer Brush Layers with Varying Chemical Structures. ACS Biomater Sci Eng 2015. [DOI: 10.1021/ab500048w] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials
Engineering and ‡Department of Bioengineering, School
of Engineering, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tomomi Kitagawa
- Department of Materials
Engineering and ‡Department of Bioengineering, School
of Engineering, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuuki Inoue
- Department of Materials
Engineering and ‡Department of Bioengineering, School
of Engineering, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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71
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Liu Y, Ma C, Wang S, Guo H, Zhang B, Zhang L, Gu K, Gu J. Fabrication and performance study of a zwitterionic polyimide antifouling ultrafiltration membrane. RSC Adv 2015. [DOI: 10.1039/c5ra01760b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The design and synthesis of a zwitterionic polyimide open up new avenues for development of antifouling membranes.
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Affiliation(s)
- Yang Liu
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
| | - Chao Ma
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
| | - Shaofeng Wang
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
| | - Hanxiang Guo
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
| | - Binhan Zhang
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
| | - Li Zhang
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
| | - Kaili Gu
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
| | - Jiyou Gu
- College of Material Science and Engineering
- Northeast Forestry University
- Harbin 150040
- PR China
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72
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ANDO T. Star Polymers for Biomedical Applications. KOBUNSHI RONBUNSHU 2015. [DOI: 10.1295/koron.2015-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tsuyoshi ANDO
- Graduate School of Materials Science, Nara Institute of Science and Technology
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73
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Nagase K, Kobayashi J, Kikuchi A, Akiyama Y, Kanazawa H, Okano T. Thermoresponsive Anionic Copolymer Brushes Containing Strong Acid Moieties for Effective Separation of Basic Biomolecules and Proteins. Biomacromolecules 2014; 15:3846-58. [DOI: 10.1021/bm5012163] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenichi Nagase
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan
| | - Jun Kobayashi
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan
| | - Akihiko Kikuchi
- Department
of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Yoshikatsu Akiyama
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan
| | - Hideko Kanazawa
- Faculty
of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan
| | - Teruo Okano
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan
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74
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Totani M, Ando T, Terada K, Terashima T, Kim IY, Ohtsuki C, Xi C, Kuroda K, Tanihara M. Utilization of star-shaped polymer architecture in the creation of high-density polymer brush coatings for the prevention of platelet and bacteria adhesion. Biomater Sci 2014; 2:1172-1185. [PMID: 25485105 PMCID: PMC4251873 DOI: 10.1039/c4bm00034j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate utilization of star-shaped polymers as high-density polymer brush coatings and their effectiveness to inhibit the adhesion of platelets and bacteria. Star polymers consisting of poly(2-hydroxyethyl methacrylate) (PHEMA) and/or poly(methyl methacrylate) (PMMA), were synthesized using living radical polymerization with a ruthenium catalyst. The polymer coatings were prepared by simple drop casting of the polymer solution onto poly(ethylene terephthalate) (PET) surfaces and then dried. Among the star polymers prepared in this study, the PHEMA star polymer (star-PHEMA) and the PHEMA/PMMA (mol. ratio of 71/29) heteroarm star polymer (star-H71M29) coatings showed the highest percentage of inhibition against platelet adhesion (78-88% relative to noncoated PET surface) and Escherichia coli (94-97%). These coatings also showed anti-adhesion activity against platelets after incubation in Dulbecco's phosphate buffered saline or surfactant solution for 7 days. In addition, the PMMA component of the star polymers increased the scratch resistance of the coating. These results indicate that the star-polymer architecture provides high polymer chain density on PET surfaces to prevent adhesion of platelets and bacteria, as well as coating stability and physical durability to prevent exposure of bare PET surfaces. The star polymers provide a simple and effective approach to preparing anti-adhesion polymer coatings on biomedical materials against the adhesion of platelets and bacteria.
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Affiliation(s)
- Masayasu Totani
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Tsuyoshi Ando
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Kayo Terada
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Takaya Terashima
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Ill Yong Kim
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Naogya 464-8603, Japan
| | - Chikara Ohtsuki
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Naogya 464-8603, Japan
| | - Chuanwu Xi
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Masao Tanihara
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
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75
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Zhang J, Wang Q, Wang Z, Zhu C, Wu Z. Modification of poly(vinylidene fluoride)/polyethersulfone blend membrane with polyvinyl alcohol for improving antifouling ability. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.05.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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76
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77
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78
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Sakata S, Inoue Y, Ishihara K. Quantitative evaluation of interaction force between functional groups in protein and polymer brush surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2745-2751. [PMID: 24564418 DOI: 10.1021/la404981k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To understand interactions between polymer surfaces and different functional groups in proteins, interaction forces were quantitatively evaluated by force-versus-distance curve measurements using atomic force microscopy with a functional-group-functionalized cantilever. Various polymer brush surfaces were systematically prepared by surface-initiated atom transfer radical polymerization as well-defined model surfaces to understand protein adsorption behavior. The polymer brush layers consisted of phosphorylcholine groups (zwitterionic/hydrophilic), trimethylammonium groups (cationic/hydrophilic), sulfonate groups (anionic/hydrophilic), hydroxyl groups (nonionic/hydrophilic), and n-butyl groups (nonionic/hydrophobic) in their side chains. The interaction forces between these polymer brush surfaces and different functional groups (carboxyl groups, amino groups, and methyl groups, which are typical functional groups existing in proteins) were quantitatively evaluated by force-versus-distance curve measurements using atomic force microscopy with a functional-group-functionalized cantilever. Furthermore, the amount of adsorbed protein on the polymer brush surfaces was quantified by surface plasmon resonance using albumin with a negative net charge and lysozyme with a positive net charge under physiological conditions. The amount of proteins adsorbed on the polymer brush surfaces corresponded to the interaction forces generated between the functional groups on the cantilever and the polymer brush surfaces. The weakest interaction force and least amount of protein adsorbed were observed in the case of the polymer brush surface with phosphorylcholine groups in the side chain. On the other hand, positive and negative surfaces generated strong forces against the oppositely charged functional groups. In addition, they showed significant adsorption with albumin and lysozyme, respectively. These results indicated that the interaction force at the functional group level might be a suitable parameter for understanding protein adsorption.
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Affiliation(s)
- Sho Sakata
- Department of Materials Engineering, ‡Department of Bioengineering, School of Engineering, The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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79
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Nagase K, Kobayashi J, Kikuchi A, Akiyama Y, Kanazawa H, Okano T. Monolithic Silica Rods Grafted with Thermoresponsive Anionic Polymer Brushes for High-Speed Separation of Basic Biomolecules and Peptides. Biomacromolecules 2014; 15:1204-15. [DOI: 10.1021/bm401779r] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenichi Nagase
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Jun Kobayashi
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Akihiko Kikuchi
- Department
of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Yoshikatsu Akiyama
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Hideko Kanazawa
- Faculty
of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan
| | - Teruo Okano
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
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80
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Yoshimoto M, Yuda Y, Tanaka M, Kurosawa S. Behavior of Polyethylene Glycol Molecules at an Oscillating Solid-Liquid Interface. J Oleo Sci 2014; 63:75-82. [DOI: 10.5650/jos.ess13122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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81
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Ran J, Wu L, Zhang Z, Xu T. Atom transfer radical polymerization (ATRP): A versatile and forceful tool for functional membranes. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2013.09.001] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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82
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Matsumoto M, Matsusaki M, Akashi M. Preparation of Biodegradable Peptide Nanospheres with Hetero PEG Brush Surfaces. Macromol Biosci 2013; 14:142-50. [DOI: 10.1002/mabi.201300201] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 07/25/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Masahiro Matsumoto
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamadaoka, Suita Osaka 565-0871 Japan
| | - Michiya Matsusaki
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamadaoka, Suita Osaka 565-0871 Japan
- PRESTO; Japan Science and Technology Agency; 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Mitsuru Akashi
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamadaoka, Suita Osaka 565-0871 Japan
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83
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Sha J, Lippmann ES, McNulty J, Ma Y, Ashton RS. Sequential Nucleophilic Substitutions Permit Orthogonal Click Functionalization of Multicomponent PEG Brushes. Biomacromolecules 2013; 14:3294-303. [DOI: 10.1021/bm400900r] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jin Sha
- School of Mechanical
and Power Engineering, East China University of Science and Technology, Shanghai, China
| | | | | | - Yulu Ma
- School of Mechanical
and Power Engineering, East China University of Science and Technology, Shanghai, China
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84
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Inoue Y, Nakanishi T, Ishihara K. Elastic repulsion from polymer brush layers exhibiting high protein repellency. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10752-10758. [PMID: 23898820 DOI: 10.1021/la4021492] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Hydrophilic poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) and poly(2-hydroxyethyl methacrylate) (PHEMA) brush layers with different thicknesses and graft densities were prepared to construct a model surface to elucidate protein-surface interactions. In particular, we focused on the steric repulsion of hydrophilic polymer layers as one of the surface properties that strongly influence protein adsorption and employed force-versus-distance (f-d) curve measurements obtained via atomic force microscopy to quantitatively evaluate the steric repulsion force, which is also referred to as the "elastic repulsion energy." We also analyzed direct interactions between the surface and proteins via the f-d curve, because these interactions trigger the protein-adsorption phenomenon. Protein-surface interactions were extremely suppressed at surfaces with high elastic repulsion energies and highly dense polymer brush structures, which is in contrast to those at surfaces with low elastic repulsion energies and low density of the grafted polymer layers. These results indicate that the elastic repulsion from the grafted polymer layer at the surface is an important parameter for controlling protein-surface interactions and protein adsorption phenomenon.
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Affiliation(s)
- Yuuki Inoue
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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85
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Matsuzaka N, Nakayama M, Takahashi H, Yamato M, Kikuchi A, Okano T. Terminal-Functionality Effect of Poly(N-isopropylacrylamide) Brush Surfaces on Temperature-Controlled Cell Adhesion/Detachment. Biomacromolecules 2013; 14:3164-71. [DOI: 10.1021/bm400788p] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Naoki Matsuzaka
- Department of Materials
Science and Technology, Graduate School of Industrial
Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
- Institute of Advanced
Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawada-cho,
Shinjuku, Tokyo 162-8666, Japan
- Research Fellow, Japan Society for the Promotion of Science (JSPS),
Tokyo, Japan
| | - Masamichi Nakayama
- Institute of Advanced
Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawada-cho,
Shinjuku, Tokyo 162-8666, Japan
| | - Hironobu Takahashi
- Institute of Advanced
Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawada-cho,
Shinjuku, Tokyo 162-8666, Japan
| | - Masayuki Yamato
- Institute of Advanced
Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawada-cho,
Shinjuku, Tokyo 162-8666, Japan
| | - Akihiko Kikuchi
- Department of Materials
Science and Technology, Graduate School of Industrial
Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Teruo Okano
- Institute of Advanced
Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawada-cho,
Shinjuku, Tokyo 162-8666, Japan
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86
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Jalili K, Abbasi F, Milchev A. Surface Microdynamics Phase Transition and Internal Structure of High-Density, Ultrathin PHEMA-b-PNIPAM Diblock Copolymer Brushes on Silicone Rubber. Macromolecules 2013. [DOI: 10.1021/ma4003962] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Jalili
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - F. Abbasi
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - A. Milchev
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute for Physical Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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87
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Baek S, Green R, Granville A, Martens P, Poole-Warren L. Thin film hydrophilic electroactive polymer coatings for bioelectrodes. J Mater Chem B 2013; 1:3803-3810. [PMID: 32261133 DOI: 10.1039/c3tb20152j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hybrids of conducting polymers (CPs) and hydrogels have been explored as soft electroactive coatings for improving the mechanical and electrical performance of metallic implant electrodes. However, hydrogel fabrication methods pose a significant challenge to producing thin (sub-micron) coatings, resulting in bulky implants, which displace a large volume of tissue. To address this issue, polymer brushes of poly(2-hydroxyethyl methacrylate) (pHEMA) were covalently bound to a gold electrode using surface initiated atom-transfer radical-polymerization (SI-ATRP). The CP poly(3,4-ethylene dioxythiophene) (PEDOT) was electropolymersied through the brush layer to form a thin hydrophilic coating. The electrical properties of the hybrid were shown to be superior to homogenous CPs and the surface chemistry was varied as a function of PEDOT deposition time to present a graded composition of pHEMA and PEDOT. The resulting material was shown to support the attachment and differentiation of model neural cells, signifying the potential of these hybrid coatings for bioelectrode applications.
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Affiliation(s)
- Sungchul Baek
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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88
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Fu Z, Zhang N, Liu J, Li T, Xu W, Wang F, Wang T, Zhai Z, Liu L, Mao L, Wu Y. N-hydroxymethyl acrylamide polymer brush and its application in catalyzing coupling reaction. J Colloid Interface Sci 2013; 394:409-18. [DOI: 10.1016/j.jcis.2013.01.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 11/26/2012] [Accepted: 01/04/2013] [Indexed: 10/27/2022]
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89
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Hentschel C, Wagner H, Smiatek J, Heuer A, Fuchs H, Zhang X, Studer A, Chi L. AFM-based force spectroscopy on polystyrene brushes: effect of brush thickness on protein adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:1850-1856. [PMID: 23343216 DOI: 10.1021/la302212h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Herein we present a study on nonspecific binding of proteins at highly dense packed hydrophobic polystyrene brushes. In this context, an atomic force microscopy tip was functionalized with concanavalin A to perform single-molecule force spectroscopy measurements on polystyrene brushes with thicknesses of 10 and 60 nm, respectively. Polystyrene brushes with thickness of 10 nm show an almost two times stronger protein adsorption than brushes with a thickness of 60 nm: 72 pN for the thinner and 38 pN for the thicker layer, which is in qualitative agreement with protein adsorption studies conducted macroscopically by fluorescence microscopy.
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Affiliation(s)
- Carsten Hentschel
- Physikalisches Institut, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
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90
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Smiatek J, Heuer A, Wagner H, Studer A, Hentschel C, Chi L. Coat thickness dependent adsorption of hydrophobic molecules at polymer brushes. J Chem Phys 2013; 138:044904. [DOI: 10.1063/1.4789305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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91
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Sola L, Cretich M, Damin F, Chiari M. Surface modifications by polymers for biomolecule conjugation. Methods Mol Biol 2013; 1025:95-107. [PMID: 23918331 DOI: 10.1007/978-1-62703-462-3_7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polymeric coatings, usually referred as tridimensional chemistries, provide homogenous surface derivatization methods presenting a high reactive group concentration and resulting in an increased binding capacity of targets. Furthermore, they act as linkers distributing the bound probe also in the axial position, thus causing a faster reaction with the target involved in biomolecular recognition and can be engineered to custom tailor their properties for specific applications. Most approaches which aim at attaching polymers to a surface use a system where the polymer carries an "anchor" group either as an end group or in a side chain. This anchor group can reacts with appropriate sites at the substrate surface, thus yielding surface-attached monolayers of polymer molecules (termed "grafting to"). Another technique is to carry out a polymerization reaction in the presence of a substrate onto which monomers had been attached leading to the so called "grafting from" approach. In this chapter, protocols to functionalize glass and silicon surfaces by "grafting to" as well as by "grafting-from" approach are shown using copolymers made of N,N-dimethylacrylamide (DMA) or Glycidyl methacrylate (GMA) as the polymer backbone, N-acryloyloxysuccinimide (NAS) as reactive group, and 3-(trimethoxysilyl)propyl methacrylate (MAPS) or 3-mercaptopropyl trimethoxy silane (MPS) as anchoring groups.
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Affiliation(s)
- Laura Sola
- Consiglio Nazionale delle Ricerche, Istituto di Chimica del Riconoscimento Molecolare, Milan, Italy
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92
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INOUE Y. Water-Soluble Polymer Brush Structure for Biomedical Surface. KOBUNSHI RONBUNSHU 2013. [DOI: 10.1295/koron.70.419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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93
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Teuchert C, Michel C, Hausen F, Park DY, Beckham HW, Wenz G. Cylindrical Polymer Brushes by Atom Transfer Radical Polymerization from Cyclodextrin–PEG Polyrotaxanes: Synthesis and Mechanical Stability. Macromolecules 2012. [DOI: 10.1021/ma302204a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | | | - Florian Hausen
- INM − Leibniz-Institute for New Materials, Campus D2 2, 66123 Saarbrücken,
Germany
| | - Doh-Yeon Park
- School of Materials
Science and
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Haskell W. Beckham
- School of Materials
Science and
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Gerhard Wenz
- Saarland University, Campus C4.2, D-66123 Saarbrücken, Germany
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94
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Tamura A, Kobayashi J, Yamato M, Okano T. Thermally responsive microcarriers with optimal poly(N-isopropylacrylamide) grafted density for facilitating cell adhesion/detachment in suspension culture. Acta Biomater 2012; 8:3904-13. [PMID: 22813847 DOI: 10.1016/j.actbio.2012.07.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 05/14/2012] [Accepted: 07/10/2012] [Indexed: 12/29/2022]
Abstract
Large-scale cell culture of anchorage-dependent cells based on microcarriers is a crucial method for industrial-scale cell culture and large-scale expansion of therapeutic cells. Previously, the authors developed temperature-responsive microcarriers bearing poly(N-isopropylacrylamide) (PIPAAm)-grafted chains on their outer surface for the non-invasive detachment of cultured cells through temperature reduction without proteolytic enzyme treatment. In this study, to further facilitate cell adhesion and thermally induced detachment efficiency, PIPAAm-grafted beads with various grafted amounts and various grafted PIPAAm chain densities were prepared. Contact angle measurements at different temperatures revealed that the magnitude of the contact angle change from 37 to 20 °C decreased with increasing brush density. Additionally, the amount of fibronectin adsorbed on the bead surface decreased with increasing brush density. Chinese hamster ovary (CHO-K1) cells adhered to the surface of PIPAAm-grafted beads at 37 °C, and a negligible difference in the cell adhesive property was observed by varying the brush density of the PIPAAm-grafted beads. When the temperature was reduced to 20 °C, the adhering cells were found to detach themselves from the PIPAAm-grafted bead surfaces. Of particular interest, PIPAAm-grafted beads with intermediate brush density exhibited the highest efficiency of thermally induced cell detachment. Thus, the brush density of PIPAAm-grafted beads strongly affected the efficiency of thermally induced cell detachment.
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95
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Konradi R, Acikgoz C, Textor M. Polyoxazolines for Nonfouling Surface Coatings - A Direct Comparison to the Gold Standard PEG. Macromol Rapid Commun 2012; 33:1663-76. [DOI: 10.1002/marc.201200422] [Citation(s) in RCA: 196] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Revised: 08/14/2012] [Indexed: 11/11/2022]
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96
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Fang Y, Xu W, Meng XL, Ye XY, Wu J, Xu ZK. Poly(2-hydroxyethyl methacrylate) brush surface for specific and oriented adsorption of glycosidases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13318-13324. [PMID: 22921196 DOI: 10.1021/la302738s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We present a detailed picture to screen general ligands from simple chemicals for fabricating affinity surface to glycosidase enzymes. The surface was constructed by grafting poly(2-hydroxyethyl methacrylate) (PHEMA) brush on SPR gold chip via surface-initiated atom-transfer radical polymerization, after which poly(methoxyethyl methacrylate) (PMEMA) and poly(oligo(ethylene glycol) methacrylate) (POEGMA) brushes were also prepared for comparison. SPR measurements were adopted to monitor the early-stage adsorption of two glycosidases and three other typical proteins. PHEMA resists the adsorption of lysozyme, bovine serum albumin, and fibrinogen, while it is capable of specifically adsorbing β-glucosidase (GLU) and β-galactosidase (GAL). These are quite different from the nonspecific adsorption of PMEMA and the anti-nonspecific adsorption of POEGMA to the studied proteins, because PHEMA is the acceptor substrate of the glycosidases. About 69.6 and 93.7 ng/cm(2) of GAL and GLU are adsorbed on the PHEMA brush surface, of which more than 49.6 ng/cm(2) is remained after washing with PBS. The specific adsorption process is appropriately described by Freundlich isothermal model rather than Langmuir one, and is also indicated to be spontaneous, endothermic, and entropy driven through thermodynamic studies. Taking into account all stated results above, we propose that molecular recognition takes place between the hydroxyl groups of PHEMA and the active sites of glycosidases, which subsequently enables the oriented adsorption of glycosidases on the brush surface. The adsorbed enzyme can be effectively eluted with 1.0 M aqueous solution of ethanol. Our findings open the door to the further development in the design of novel acceptor substrate-ligand affinity chromatography for enzyme purification.
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Affiliation(s)
- Yan Fang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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97
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Suzuki H, Li L, Nakaji-Hirabayashi T, Kitano H, Ohno K, Matsuoka K, Saruwatari Y. Carboxymethylbetaine copolymer layer covalently fixed to a glass substrate. Colloids Surf B Biointerfaces 2012; 94:107-13. [DOI: 10.1016/j.colsurfb.2012.01.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 01/19/2012] [Accepted: 01/19/2012] [Indexed: 12/01/2022]
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98
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Yoshimoto M, Yuda Y, Aizawa H, Sato H, Kurosawa S. Dynamic properties of the polyethylene glycol molecules on the oscillating solid–liquid interface. Anal Chim Acta 2012; 731:82-7. [DOI: 10.1016/j.aca.2012.04.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 02/24/2012] [Accepted: 04/10/2012] [Indexed: 10/28/2022]
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99
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Matsusaki M, Matsumoto M, Waku T, Akashi M. Self-Assembled Structure of Peptide Nanospheres Induces High Stability against Hydrolysis and Sterilization. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 22:1035-48. [PMID: 20566072 DOI: 10.1163/092050610x497890] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Michiya Matsusaki
- a Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi-shi 332-0012, Japan
| | - Masahiro Matsumoto
- b Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tomonori Waku
- c Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Department of Bio-molecular Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan
| | - Mitsuru Akashi
- d Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi-shi 332-0012, Japan.
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100
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Akkahat P, Mekboonsonglarp W, Kiatkamjornwong S, Hoven VP. Surface-grafted poly(acrylic acid) brushes as a precursor layer for biosensing applications: effect of graft density and swellability on the detection efficiency. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5302-5311. [PMID: 22329634 DOI: 10.1021/la204542e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Carboxyl groups along poly(acrylic acid) (PAA) brushes attached to the surface of a gold-coated substrate served as the precursor moieties for the covalent immobilization of amino-functionalized biotin or bovine serum albumin (BSA) to form a sensing probe for streptavidin (SA) or anti-BSA detection, respectively. Surface-grafted PAA brushes were obtained by acid hydrolysis of poly(tert-butyl acrylate) brushes, formerly prepared by surface-initiated atom transfer radical polymerization of tert-butyl acrylate. As determined by surface plasmon resonance, the PAA brushes immobilized with functionalized biotin or BSA probes not only showed good binding with the designated target analytes but also maintained a high resistance to nonspecific protein adsorption, especially those PAA brushes with a high surface graft density. Although the probe binding capacity can be raised as a function of the graft density of the PAA brushes or the amount of carboxyl groups along the PAA chains, the accessibility of the target analyte to the immobilized probe was limited at the high graft density of the PAA brushes. The effect was far more apparent for the BSA-anti-BSA probe-analyte pair than for the much smaller biotin-SA probe-analyte pair. The impact of the swellability of the PAA brushes, as tailored by the degree of carboxyl group activation, on both the sensing probe immobilization and analyte detection was also addressed. This investigation demonstrated that PAA brushes having a defined graft density have a promising potential as a precursor layer for biosensing applications.
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Affiliation(s)
- Piyaporn Akkahat
- Program in Petrochemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
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