1
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Takeuchi K, Sato R, Nogata Y, Kobayashi M. Measurement of the Adhesion Force of a Living Sessile Organism on Antifouling Coating Surfaces Prepared with Polysulfobetaine-Grafted Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 38019926 DOI: 10.1021/acs.langmuir.3c02686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
An antifouling polymer brush-like structure was fabricated by a simple and versatile dip-coating method of sulfobetaine containing copolymer-grafted silica nanoparticles (SiNPs) and alkyl diiodide cross-linkers. Surface-initiated atom transfer radical copolymerization of 3-(N-2-methacryloyloxyethyl-N,N-dimethyl)ammonatopropanesulfonate (MAPS) and N,N-dimethylaminoethyl methacrylate (DMAEMA) was carried out from initiator-immobilized SiNPs to give poly(MAPS-co-DMAEMA)-grafted SiNPs (MAPS/DMAEMA = 9/1, mol/mol) with diameters of 150-170 nm. The SiNP-g-copolymer/2,2,2-trifluoroethanol solution was dip-coated on silicon and glass substrates. Successive treatment with 1,4-diiodobutane in methanol gave a hydrophilic cross-linked coating film for the SiNP-g-copolymer. The cross-linked particle brushes did not peel off from the substrate even after washing with water in an ultrasonic cleaner despite the simple physical absorption of the SiNP-g-copolymer on the substrate surface. The adhesion force of the tentacle of a living barnacle cyprid on a glass surface covered with the cross-linked SiNP-g-copolymer was directly measured by scanning probe microscopy in seawater. The coating film exhibited extremely low adhesion to the cypris larva in the seawater, expecting this to be an effective antifouling property.
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Affiliation(s)
- Kanae Takeuchi
- Graduate School of Engineering, Kogakuin University, Tokyo 192-0015, Japan
| | - Ryota Sato
- Graduate School of Engineering, Kogakuin University, Tokyo 192-0015, Japan
| | - Yasuyuki Nogata
- Sustainable System Research Laboratory, Central Research Institute of Electric Power Industry, Abiko, Chiba 270-1194, Japan
| | - Motoyasu Kobayashi
- School of Advanced Engineering, Kogakuin University, Tokyo 192-0015, Japan
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2
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Othman MH, Ito Y, Akimoto J. Synthesis and Characterization of Polyethylene Glycol-Grafted Photoreactive Polyethylene Glycols for Antibiofouling Applications. Polymers (Basel) 2022; 15:polym15010184. [PMID: 36616534 PMCID: PMC9824761 DOI: 10.3390/polym15010184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Notably, antibiofouling is an important and predominant technique adopted to improve the surfaces of biomaterials. In this study, polyethylene glycol-grafted polyethylene glycols bearing azidophenyl groups were synthesized and immobilized on polystyrene surfaces via photoirradiation. The prepared polymers were found to be highly soluble in water, and photoimmobilization with fluorescent proteins was confirmed based on micropatterning using a photomask. These polymers suppressed nonspecific interactions between proteins and cells on the substrate. Considering that photoimmobilization can be adopted for the covalent bond modification of various surfaces, the developed water-soluble and highly antibiofouling polymers appear to be useful in biomaterial preparation.
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Affiliation(s)
- Mahmoud H. Othman
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji 192-0397, Tokyo, Japan
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji 192-0397, Tokyo, Japan
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Correspondence: (Y.I.); (J.A.)
| | - Jun Akimoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Correspondence: (Y.I.); (J.A.)
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3
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Self-assembly strategy to reduce non-specific adsorption for the development of high sensitivity quantitative immunoassay. Anal Chim Acta 2022; 1229:340367. [PMID: 36156225 DOI: 10.1016/j.aca.2022.340367] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/26/2022] [Accepted: 09/05/2022] [Indexed: 11/23/2022]
Abstract
The development of functionalized surfaces with low non-specific adsorption is important for their biomedical applications. To inhibit non-specific adsorption on glass substrate, we designed a novel optical biochip by modifying a layer of dense negatively charged film (SO32-) on its substrate surface via self-assembly. Compared with the untreated glass substrate, it reduced the adsorption by about 300-fold or 400-fold by poly (styrene sulfonic acid) sodium salt (PSS), or meso-tetra (4-sulfonatophenyl) porphine dihydrochloride (TSPP) on individually the modified glass substrate. Considering the effect of fluorescence resonance energy transfer (FRET) between TSPP and the QDs in solution by mixing, a strategy of 2-layer of TSPP followed by 4-layer of PSS was designed to modify the glass for preparing biochips. Under the optimized conditions, the biochip on functionalized glass substrate co-treated with TSPP and PSS realized the sensitive quantitative detection of C-reactive protein (CRP) based on a quantum dot fluorescence immunosorbent assay (QD-FLISA). The limit of detection (LOD) for CRP achieved 0.69 ng/mL with the range of 1-1,000 ng/mL using TSPP and PSS co-treated glass substrate surface, which was respectively about 1.9-fold and 7.5-fold more sensitive to the PSS-modified biochip and the TSPP-modified biochip. This work demonstrated an effective and convenient strategy to obtain biochips with low non-specific adsorption properties on functionalized surfaces, thus providing a new approach for creating ultra-high sensitivity microchannels or microarrays on glass substrates.
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Wang X, Sun S, Zhu X, Guo P, Liu X, Liu C, Lei M. Application of amphoteric polymers in the process of leather post-tanning. JOURNAL OF LEATHER SCIENCE AND ENGINEERING 2021. [DOI: 10.1186/s42825-021-00050-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
With the characteristics of controllable charge and environmental friendliness, amphoteric polymers can be used in post-tanning process to solve the problems that arise during leather making and are caused by the low absorption rate of single-charge chemicals, incompatibility with new tanning methods, and complex operation process. In this review, the structure, performance, and preparation of amphoteric polymers are reported. Then, the charge change of collagen during different tanning and pH treatments is introduced. Finally, the application and development of amphoteric polymers during the post-tanning process of leather making are discussed. This review has certain guiding significance to the preparation and application of amphoteric polymers for tanning system.
Graphical abstract
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5
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Li D, Wei Q, Wu C, Zhang X, Xue Q, Zheng T, Cao M. Superhydrophilicity and strong salt-affinity: Zwitterionic polymer grafted surfaces with significant potentials particularly in biological systems. Adv Colloid Interface Sci 2020; 278:102141. [PMID: 32213350 DOI: 10.1016/j.cis.2020.102141] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/11/2020] [Accepted: 03/12/2020] [Indexed: 12/21/2022]
Abstract
In recent years, zwitterionic polymers have been frequently reported to modify various surfaces to enhance hydrophilicity, antifouling and antibacterial properties, which show significant potentials particularly in biological systems. This review focuses on the fabrication, properties and various applications of zwitterionic polymer grafted surfaces. The "graft-from" and "graft-to" strategies, surface grafting copolymerization and post zwitterionization methods were adopted to graft lots type of the zwitterionic polymers on different inorganic/organic surfaces. The inherent hydrophilicity and salt affinity of the zwitterionic polymers endow the modified surfaces with antifouling, antibacterial and lubricating properties, thus the obtained zwitterionic surfaces show potential applications in biosystems. The zwitterionic polymer grafted membranes or stationary phases can effectively separate plasma, water/oil, ions, biomolecules and polar substrates. The nanomedicines with zwitterionic polymer shells have "stealth" effect in the delivery of encapsulated drugs, siRNA or therapeutic proteins. Moreover, the zwitterionic surfaces can be utilized as wound dressing, self-healing or oil extraction materials. The zwitterionic surfaces are expected as excellent support materials for biosensors, they are facing the severe challenges in the surface protection of marine facilities, and the dense ion pair layers may take unexpected role in shielding the grafted surfaces from strong electromagnetic field.
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6
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Jiang C, Wang G, Hein R, Liu N, Luo X, Davis JJ. Antifouling Strategies for Selective In Vitro and In Vivo Sensing. Chem Rev 2020; 120:3852-3889. [DOI: 10.1021/acs.chemrev.9b00739] [Citation(s) in RCA: 187] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Cheng Jiang
- Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU, United Kingdom
| | - Guixiang Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- College of Chemistry and Chemical Engineering, Taishan University, Taian 271021, China
| | - Robert Hein
- Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom
| | - Nianzu Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xiliang Luo
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jason J. Davis
- Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom
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Ao J, Han J, Xu X, Qi S, Ma L, Wang Z, Zhang L, Li Q, Xu L, Ma H. Enhanced Performance in Uranium Extraction by Quaternary Ammonium-Functionalized Amidoxime-Based Fibers. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06829] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junxuan Ao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
| | - Jiaguang Han
- Guangxi Key laboratory of Optoeletronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Xiao Xu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
| | - Shumao Qi
- Jining University, Qufu 273155, China
| | - Lin Ma
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
| | - Ziqiang Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
| | - Lan Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
| | - Qingnuan Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
| | - Lu Xu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
| | - Hongjuan Ma
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Shanghai 201800, China
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8
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Ogawa H, Nakaji-Hirabayashi T, Matsumura K, Yoshikawa C, Kitano H, Saruwatari Y. Novel anti-biofouling and drug releasing materials for contact lenses. Colloids Surf B Biointerfaces 2020; 189:110859. [PMID: 32086022 DOI: 10.1016/j.colsurfb.2020.110859] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/23/2020] [Accepted: 02/10/2020] [Indexed: 01/22/2023]
Abstract
Contact lens users very often become patients of allergic conjunctivitis, which is caused by protein and bacteria adsorption to the eye, because contact lenses easily adsorb proteins and bacteria. However, even if contact lens users develop eye diseases such as allergic conjunctivitis, most of them continue to use contact lenses to avoid interference to daily life or a decrease in their quality of life. If novel contact lenses able to prevent and additionally cure eye diseases can be manufactured, they could improve the quality of life of contact lens users worldwide. Thus, we aim to develop a novel material for contact lenses to prevent diseases by incorporating a zwitterionic polymer with the ability to suppress protein and bacteria adsorption. In addition, we also aim to effectively introduce and release a drug against allergic conjunctivitis from the contact lens material. Because the poorly water-soluble drug for allergic conjunctivitis (pranoprofen) forms a rigid crystal structure, we developed the novel "hot-melt press method" to construct a contact lens able to effectively release it. In the present study, polymer sheets containing carboxymethyl betaine (a kind of zwitterionic monomer), 2-hydroxyethyl methacrylate, and 1-vinyl-2-pyrrolidone were prepared using three different procedures. The sheets were hydrophilic and showed a strong resistance against protein and bacteria adsorption. The sheets prepared by the hot-melt press method were transparent and seemed to have potential as a material for contact lenses. In addition, the drug introduced into the sheets during preparation was observed to release at a practically appropriate dose. Therefore, it is expected that the sheets could possibly be used as a material for contact lenses which not only protect against the development of eye trouble due to protein and bacterial adsorption, but also heal allergic conjunctivitis.
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Affiliation(s)
- Hiroaki Ogawa
- Department of Applied Chemistry, Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan
| | - Tadashi Nakaji-Hirabayashi
- Department of Applied Chemistry, Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan; Department of Advanced Nano-bioscience, Graduate School of Innovative Life Science, University of Toyama, Toyama 930-0194, Japan; International Center for Materials Nanoarchitectonics, National Institute of Material Science, Ibaraki 305-0047, Japan.
| | - Kazuaki Matsumura
- School of Materials Science, Japan Advanced Institute of Science and Technology, Ishikawa 923-1292, Japan
| | - Chiaki Yoshikawa
- International Center for Materials Nanoarchitectonics, National Institute of Material Science, Ibaraki 305-0047, Japan
| | - Hiromi Kitano
- Department of Applied Chemistry, Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan; R and D Head Office, Institute for Polymer-Water Interfaces, Toyama 939-2376, Japan
| | - Yoshiyuki Saruwatari
- Business Operation Division, Osaka Organic Chemical Industry Ltd., Osaka 541-0052, Japan
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9
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Azuma T, Matsushita T, Manivel VA, Nilsson Ekdahl K, Nilsson B, Teramura Y, Takai M. Poly(2-aminoethyl methacrylate)-based polyampholyte brush surface with carboxylic groups to improve blood compatibility. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:679-693. [PMID: 31888410 DOI: 10.1080/09205063.2019.1710900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Zwitterionic material-based polymer brush significantly prevents protein adsorption and cell adhesion, which leads to the blood compatibility. However, zwitterionic polymer itself is difficult to be modified further, for the blood compatibility since the charged balance is impaired after the modification. In this research, chemically modifiable mixed charge polymer brush is designed, without impairing its characteristics. Condensed mixed charge polymer brush will work like zwitterionic material because neighbouring opposite charge is reported to be important in the zwitterionic material. Cationic polymer brush with primary amine group, which is based on 2-aminoethyl methacrylate (AEMA), was prepared and modified by succinic anhydride to obtain carboxylic group induced poly(AEMA). The ratio of primary amine group and carboxylic group was optimized to obtain the polyampholyte brush. The blood compatibility was evaluated by measuring coagulation/complement activation, protein adsorption and cell adhesion induced by the polymer. Our designed cationic-based polyampholyte brush prevented coagulation/complement activation comparable to poly(2-methacryloyloxyethyl phosphorylcholine) brush, based on intra-monomer interaction, because condensed mix charge works like zwitterion.
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Affiliation(s)
- Tomoyuki Azuma
- Department of Bioengineering, The University of Tokyo, Tokyo, Japan
| | | | - Vivek Anand Manivel
- Department of Immunology, Genetics and Pathology (IGP), Rudbeck Laboratory C5:3, Uppsala University, Uppsala, Sweden
| | - Kristina Nilsson Ekdahl
- Department of Immunology, Genetics and Pathology (IGP), Rudbeck Laboratory C5:3, Uppsala University, Uppsala, Sweden.,Linnaeus Center of Biomaterials Chemistry, Linnaeus University, Kalmar, Sweden
| | - Bo Nilsson
- Department of Immunology, Genetics and Pathology (IGP), Rudbeck Laboratory C5:3, Uppsala University, Uppsala, Sweden
| | - Yuji Teramura
- Department of Bioengineering, The University of Tokyo, Tokyo, Japan.,Department of Immunology, Genetics and Pathology (IGP), Rudbeck Laboratory C5:3, Uppsala University, Uppsala, Sweden
| | - Madoka Takai
- Department of Bioengineering, The University of Tokyo, Tokyo, Japan
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10
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Biodegradable waterborne polyurethane grafted with gelatin hydrolysate via solvent-free copolymerization for potential porous scaffold material. J Mech Behav Biomed Mater 2019; 92:79-89. [PMID: 30660031 DOI: 10.1016/j.jmbbm.2019.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/08/2019] [Accepted: 01/08/2019] [Indexed: 01/22/2023]
Abstract
One potential porous scaffold material based on polyester waterborne polyurethane (PEUR) grafted with modified gelatin hydrolysate (GH) has been investigated in this research. First, the GH was modified with a silane coupling agent (KH550), and then the modified GH was mixed with pre-polymer emulsion of PEUR to obtain the PEUR grafted GH emulsion (PEUR-g-GH). The synthesized PEUR-g-GH emulsions were characterized by stability analysis and viscosity test. Moreover, the film-forming property of PEUR-g-GH has also been studied, and the PEUR-g-GH films were characterized regarding the water resistance, solvent resistance, mechanical properties, FTIR, AFM, SEM, DMA, TGA and contact angle testing. Finally, the bioactivity and biodegradation were investigated by soaking PEUR-g-GH scaffolds in simulated body fluid (SBF). The results indicated that the PEUR-g-GH emulsion has good stability, water resisting (the contact angle was over 90o), the PEUR-g-GH showed excellent film-forming, high storage modulus, good structural homogeneity and thermal stability (the temperature of maximum weight loss was over 350 °C). The freeze-dried sample showed porous structure, and the mutual crosslinking of layers can contribute to a good bearing capacity for scaffold. The SBF biodegradability revealed that the biodegradation rate and degree of films gradually increased with the content of GH increased. In addition, the cells on the material were markedly enhanced, and most of cells have proliferated and formed vesicles, which shown a good biocompatibility.
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11
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Rajan R, Suzuki Y, Matsumura K. Zwitterionic Polymer Design that Inhibits Aggregation and Facilitates Insulin Refolding: Mechanistic Insights and Importance of Hydrophobicity. Macromol Biosci 2018; 18:e1800016. [DOI: 10.1002/mabi.201800016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 02/21/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Robin Rajan
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
| | - Yu Suzuki
- Tenure-Track Program for Innovative Research; University of Fukui; 3-9-1 Bunkyo Fukui-shi Fukui 910-8507 Japan
| | - Kazuaki Matsumura
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
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12
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Li L, Nakaji-Hirabayashi T, Kitano H, Ohno K, Saruwatari Y, Matsuoka K. A novel approach for UV-patterning with binary polymer brushes. Colloids Surf B Biointerfaces 2018; 161:42-50. [PMID: 29040833 DOI: 10.1016/j.colsurfb.2017.10.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 10/04/2017] [Accepted: 10/06/2017] [Indexed: 10/18/2022]
Abstract
A mixed self-assembled monolayer (SAM) of an initiator (3-(2-bromo-2-isobutyryloxy)propyl triethoxysilane) for atom transfer radical polymerization (ATRP) and an agent (6-(triethoxysilyl)hexyl 2-(((methylthio)carbonothioyl)thio)-2-phenylacetate) for reversible addition-fragmentation chain transfer (RAFT) polymerization was constructed on the surface of a silicon wafer or glass plate by a silane coupling reaction. When a UV light at 254nm was irradiated at the mixed SAM through a photomask, the surface density of the bromine atom at the end of BPE in the irradiated region was drastically reduced by UV-driven scission of the BrC bond, as observed by X-ray photoelectron spectroscopy. Consequently, the surface-initiated (SI)-ATRP of 2-ethylhexyl methacrylate (EHMA) was used to easily construct the poly(EHMA) (PEHMA) brush domain. Subsequently, SI-RAFT polymerization of a zwitterionic vinyl monomer, carboxymethyl betaine (CMB), was performed. Using the sequential polymerization, the PCMB and PEHMA brush domains on the solid substrate could be very easily patterned. Patterning proteins and cells with the binary polymer brush is expected because the PCMB brush indicated strong suppression of protein adsorption and cell adhesion, and the PEHMA brush had non-polar properties. This technique is very simple and useful for regulating the shape and size of bio-fouling and anti-biofouling domains on solid surfaces.
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Affiliation(s)
- Lifu Li
- Graduate School of Innovative Life Sciences, University of Toyama, Toyama 930-8555, Japan
| | - Tadashi Nakaji-Hirabayashi
- Graduate School of Innovative Life Sciences, University of Toyama, Toyama 930-8555, Japan; Department of Applied Chemistry, Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan; Frontier Research Core for Life Sciences, University of Toyama, Toyama 930-8555, Japan
| | - Hiromi Kitano
- Graduate School of Innovative Life Sciences, University of Toyama, Toyama 930-8555, Japan; Department of Applied Chemistry, Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan; Institute for Polymer-Water Interfaces, 84 Fukujima, Yatsuo, Toyama 939-2376, Japan.
| | - Kohji Ohno
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | | | - Kazuyoshi Matsuoka
- R & D Laboratory, Osaka Organic Chemical Industries, Kashiwara 582-0020, Japan
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13
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Rajan R, Matsumura K. Tunable Dual-Thermoresponsive Core-Shell Nanogels Exhibiting UCST and LCST Behavior. Macromol Rapid Commun 2017; 38. [PMID: 28960587 DOI: 10.1002/marc.201700478] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/18/2017] [Indexed: 11/10/2022]
Abstract
Thermoresponsive polymers change their physical properties as the temperature is changed and have found extensive use in a number of fields, especially in tissue engineering and in the development of drug delivery systems. The synthesis of a novel core-shell nanogel composed of N-isopropylacrylamide and sulfobetaine by reversible addition fragmentation chain transfer polymerization is reported. The core-shell architecture of the nanogels is confirmed using energy dispersive X-ray spectroscopy in scanning transmission electron microscopy. These nanogels exhibit dual thermoresponsive behavior, i.e., the core of the nanogel exhibits lower critical solution temperature, while the shell displays upper critical solution temperature behavior. Transition temperatures can be easily tuned by changing the molecular weight of the constituent polymer. These nanogels can be efficiently used in temperature-triggered delivery of therapeutic proteins and drugs.
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Affiliation(s)
- Robin Rajan
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Kazuaki Matsumura
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
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14
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Kreeft D, Arkenbout EA, Henselmans PWJ, van Furth WR, Breedveld P. Review of Techniques to Achieve Optical Surface Cleanliness and Their Potential Application to Surgical Endoscopes. Surg Innov 2017; 24:509-527. [PMID: 28511635 PMCID: PMC5603965 DOI: 10.1177/1553350617708959] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A clear visualization of the operative field is of critical importance in endoscopic surgery. During surgery the endoscope lens can get fouled by body fluids (eg, blood), ground substance, rinsing fluid, bone dust, or smoke plumes, resulting in visual impairment. As a result, surgeons spend part of the procedure on intermittent cleaning of the endoscope lens. Current cleaning methods that rely on manual wiping or a lens irrigation system are still far from ideal, leading to longer procedure times, dirtying of the surgical site, and reduced visual acuity, potentially reducing patient safety. With the goal of finding a solution to these issues, a literature review was conducted to identify and categorize existing techniques capable of achieving optically clean surfaces, and to show which techniques can potentially be implemented in surgical practice. The review found that the most promising method for achieving surface cleanliness consists of a hybrid solution, namely, that of a hydrophilic or hydrophobic coating on the endoscope lens and the use of the existing lens irrigation system.
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Affiliation(s)
- Davey Kreeft
- 1 Delft University of Technology, Delft, Netherlands
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15
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Rajan R, Matsumura K. Inhibition of protein aggregation by zwitterionic polymer-based core-shell nanogels. Sci Rep 2017; 7:45777. [PMID: 28374820 PMCID: PMC5379557 DOI: 10.1038/srep45777] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 03/02/2017] [Indexed: 01/27/2023] Open
Abstract
Protein aggregation is a process by which misfolded proteins polymerizes into aggregates and forms fibrous structures with a β-sheet conformation, known as amyloids. It is an undesired outcome, as it not only causes numerous neurodegenerative diseases, but is also a major deterrent in the development of protein biopharmaceuticals. Here, we report a rational design for the synthesis of novel zwitterionic polymer-based core-shell nanogels via controlled radical polymerization. Nanogels with different sizes and functionalities in the core and shell were prepared. The nanogels exhibit remarkable efficiency in the protection of lysozyme against aggregation. Addition of nanogels suppresses the formation of toxic fibrils and also enables lysozyme to retain its enzymatic activity. Increasing the molecular weight and degree of hydrophobicity markedly increases its overall efficiency. Investigation of higher order structures revealed that lysozyme when heated without any additive loses its secondary structure and transforms into a random coil conformation. In contrast, presence of nanogels facilitates the retention of higher order structures by acting as molecular chaperones, thereby reducing molecular collisions. The present study is the first to show that it is possible to design zwitterionic nanogels using appropriate polymerization techniques that will protect proteins under conditions of extreme stress and inhibit aggregation.
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Affiliation(s)
- Robin Rajan
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Kazuaki Matsumura
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
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16
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Das E, Matsumura K. Tunable phase-separation behavior of thermoresponsive polyampholytes through molecular design. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28440] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Esha Das
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Kazuaki Matsumura
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
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17
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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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18
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Lee HJ, Jamison AC, Lee TR. Entropy-Driven Conformational Control of α,ω-Difunctional Bidentate-Dithiol Azo-Based Adsorbates Enables the Fabrication of Thermally Stable Surface-Grafted Polymer Films. ACS APPLIED MATERIALS & INTERFACES 2016; 8:15691-15699. [PMID: 27219525 DOI: 10.1021/acsami.6b02025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Thermally stable radical initiator monolayers were prepared from uniquely designed α,ω-difunctional adsorbates with bidentate headgroups for the growth of nanoscale polymer films on metal surfaces. The length of the spacer separating the bidentate headgroups was varied to afford 4,4'-(diazene-1,2-diyl)bis(N-(16-(3,5-bis(mercaptomethyl)phenoxy)hexadecyl)-4-cyanopentanamide) (B16), 4,4'-(diazene-1,2-diyl)bis(N-(16-(3,5-bis(mercapto-methyl)phenoxy)decyl)-4-cyanopentanamide) (B10), and 4,4'-(diazene-1,2-diyl)bis(N-(4-(3,5-bis(mercaptomethyl)phenoxy)butyl)-4-cyanopentanamide) (B4). The structural features of the self-assembled monolayers (SAMs) derived from B16, B10, and B4 were characterized by X-ray photoelectron spectroscopy (XPS), ellipsometry, and polarization modulation infrared reflection-absorption spectroscopy (PM-IRRAS) and compared to those derived from an analogous α,ω-difunctional adsorbate with monodentate headgroups, 4,4'-(diazene-1,2-diyl)bis(4-cyano-N-(16-mercaptohexadecyl)pentanamide (M). These studies demonstrate that the conformation (i.e., hairpin vs standing up) of the bidentate initiator adsorbates on gold surfaces was easily controlled by adjusting the concentration of the adsorbates in solution. The results of solution-phase thermal desorption tests revealed that the radical initiator monolayers generated from B16, B10, and B4 exhibit an enhanced thermal stability when compared to those generated from M. Furthermore, a study of the growth of polymer films was performed to evaluate the utility of these new bidentate adsorbate SAMs as film-development platforms for new functional materials and devices. Specifically, surface-grafted polystyrene films were successfully generated from SAMs derived from B16. In contrast, attempts to grow polystyrene films from SAMs derived from M under a variety of analogous conditions were unsuccessful.
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Affiliation(s)
- Han Ju Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Andrew C Jamison
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
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19
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Rajan R, Hayashi F, Nagashima T, Matsumura K. Toward a Molecular Understanding of the Mechanism of Cryopreservation by Polyampholytes: Cell Membrane Interactions and Hydrophobicity. Biomacromolecules 2016; 17:1882-93. [DOI: 10.1021/acs.biomac.6b00343] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Robin Rajan
- School
of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Fumiaki Hayashi
- NMR
Facility Support Unit, NMR Facility, Division of Structural and Synthetic
Biology, RIKEN Center for Life Science Technologies, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Toshio Nagashima
- NMR
Facility, Division of Structural and Synthetic Biology, RIKEN Center for Life Science Technologies, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Kazuaki Matsumura
- School
of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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20
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Optimization of the composition of zwitterionic copolymers for the easy-construction of bio-inactive surfaces. J Biomed Mater Res A 2016; 104:2029-36. [DOI: 10.1002/jbm.a.35737] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 03/30/2016] [Accepted: 04/05/2016] [Indexed: 11/07/2022]
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21
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Kawasaki T, Nakaji-Hirabayashi T, Masuyama K, Fujita S, Kitano H. Complex film of chitosan and carboxymethyl cellulose nanofibers. Colloids Surf B Biointerfaces 2016; 139:95-9. [DOI: 10.1016/j.colsurfb.2015.11.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/16/2015] [Accepted: 11/26/2015] [Indexed: 02/02/2023]
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22
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Nomura K, Mikuni S, Nakaji-Hirabayashi T, Gemmei-Ide M, Kitano H, Noguchi H, Uosaki K. Water structure at the interfaces between a zwitterionic self-assembled monolayer/liquid water evaluated by sum-frequency generation spectroscopy. Colloids Surf B Biointerfaces 2015; 135:267-273. [DOI: 10.1016/j.colsurfb.2015.07.072] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 07/24/2015] [Accepted: 07/27/2015] [Indexed: 01/20/2023]
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23
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Higaki Y, Nishida J, Takenaka A, Yoshimatsu R, Kobayashi M, Takahara A. Versatile inhibition of marine organism settlement by zwitterionic polymer brushes. Polym J 2015. [DOI: 10.1038/pj.2015.77] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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24
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Rajan R, Matsumura K. A zwitterionic polymer as a novel inhibitor of protein aggregation. J Mater Chem B 2015; 3:5683-5689. [DOI: 10.1039/c5tb01021g] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A zwitterionic polymer was synthesized via RAFT polymerization. This polymer prevented heat induced protein aggregation, by preventing hydrophobic interactions between protein chains in solution, thus acting as a molecular shield.
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Affiliation(s)
- Robin Rajan
- School of Materials Science
- Japan Advanced Institute of Science and
- Technology
- Nomi
- Japan
| | - Kazuaki Matsumura
- School of Materials Science
- Japan Advanced Institute of Science and
- Technology
- Nomi
- Japan
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25
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Nomura K, Makino H, Nakaji-Hirabayashi T, Kitano H, Ohno K. Temperature-responsive copolymer brush constructed on a silica microparticle by atom transfer radical polymerization. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3476-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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Patterning of photocleavable zwitterionic polymer brush fabricated on silicon wafer. Colloids Surf B Biointerfaces 2014; 123:878-86. [DOI: 10.1016/j.colsurfb.2014.10.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 10/08/2014] [Accepted: 10/19/2014] [Indexed: 11/23/2022]
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27
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Onodera T, Toko K. Towards an electronic dog nose: surface plasmon resonance immunosensor for security and safety. SENSORS 2014; 14:16586-616. [PMID: 25198004 PMCID: PMC4208188 DOI: 10.3390/s140916586] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/31/2014] [Accepted: 08/29/2014] [Indexed: 01/06/2023]
Abstract
This review describes an “electronic dog nose” based on a surface plasmon resonance (SPR) sensor and an antigen–antibody interaction for security and safety. We have concentrated on developing appropriate sensor surfaces for the SPR sensor for practical use. The review covers different surface fabrications, which all include variations of a self-assembled monolayer containing oligo(ethylene glycol), dendrimer, and hydrophilic polymer. We have carried out detection of explosives using the sensor surfaces. For the SPR sensor to detect explosives, the vapor or particles of the target substances have to be dissolved in a liquid. Therefore, we also review the development of sampling processes for explosives, and a protocol for the measurement of explosives on the SPR sensor in the field. Additionally, sensing elements, which have the potential to be applied for the electronic dog nose, are described.
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Affiliation(s)
- Takeshi Onodera
- Research and Development Center for Taste and Odor Sensing, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kiyoshi Toko
- Research and Development Center for Taste and Odor Sensing, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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28
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Sum-frequency generation analyses of the structure of water at amphoteric SAM–liquid water interfaces. Colloids Surf B Biointerfaces 2014; 121:264-9. [DOI: 10.1016/j.colsurfb.2014.04.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 04/26/2014] [Accepted: 04/28/2014] [Indexed: 01/31/2023]
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29
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Hu X, Gorman CB. Resisting protein adsorption on biodegradable polyester brushes. Acta Biomater 2014; 10:3497-504. [PMID: 24802301 DOI: 10.1016/j.actbio.2014.04.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 04/17/2014] [Accepted: 04/28/2014] [Indexed: 12/21/2022]
Abstract
The protein adsorption and degradation behaviors of poly(lactic acid), poly(glycolic acid) (PGA) and poly(ε-caprolactone) (PCL) brushes and their co-polymer brushes with oligo(ethylene glycol) (OEG) were studied. Both brush structure and relative amount of OEG and polyester were found to be important to the protein resistance of the brushes. A protein-resisting surface can be fabricated either by using OEG as the top layer of a copolymer brush or by increasing the amount of OEG relative to polyester when using a hydroxyl terminated OEG (OEG-OH) and a methoxy terminated OEG (OEG-OMe) mixture as the substrate layer. The degradation of single polyester brushes and their co-polymer brushes using OEG-OH as a substrate layer or using OEG as a top layer was hindered. This phenomenon was rationalized by the inhibition of the proposed back-biting process as the hydroxy end groups of polyester were blocked by OEG molecules. Among these brushes tested, PGA co-polymer brushes using the methoxy/hydroxyl OEG mixture as the substrate layer proved to be both protein-resistant and degradable due to the relatively large amount of OEG moieties and the good biodegradability of PGA.
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30
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Rajan R, Jain M, Matsumura K. Cryoprotective properties of completely synthetic polyampholytes via reversible addition-fragmentation chain transfer (RAFT) polymerization and the effects of hydrophobicity. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1767-80. [DOI: 10.1080/09205063.2013.801703] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Robin Rajan
- a School of Materials Science, Japan Advanced Institute of Science and Technology , 1-1 Asahidai, Ishikawa, Nomi , 923-1292 , Japan
- b Department of Chemistry , University of Delhi , Delhi , 110007 , India
| | - Minkle Jain
- a School of Materials Science, Japan Advanced Institute of Science and Technology , 1-1 Asahidai, Ishikawa, Nomi , 923-1292 , Japan
- b Department of Chemistry , University of Delhi , Delhi , 110007 , India
| | - Kazuaki Matsumura
- a School of Materials Science, Japan Advanced Institute of Science and Technology , 1-1 Asahidai, Ishikawa, Nomi , 923-1292 , Japan
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31
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Kitano H, Liu Y, Tokuwa KI, Li L, Iwanaga S, Nakamura M, Kanayama N, Ohno K, Saruwatari Y. Polymer brush with pendent glucosylurea groups constructed on a glass substrate by RAFT polymerization. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.08.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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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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33
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Binding of β-amyloid to sulfated sugar residues in a polymer brush. Colloids Surf B Biointerfaces 2012; 93:219-25. [DOI: 10.1016/j.colsurfb.2012.01.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 01/07/2012] [Accepted: 01/07/2012] [Indexed: 11/23/2022]
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34
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Kondo T, Gemmei-Ide M, Kitano H, Ohno K, Noguchi H, Uosaki K. Sum frequency generation study on the structure of water in the vicinity of an amphoteric polymer brush. Colloids Surf B Biointerfaces 2012; 91:215-8. [DOI: 10.1016/j.colsurfb.2011.11.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Accepted: 11/03/2011] [Indexed: 11/30/2022]
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