1
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Ramnarine-Sanchez RS, Kanczler JM, Evans ND, Oreffo ROC, Dawson JI. Self-Assembly of Structured Colloidal Gels for High-Resolution 3D Micropatterning of Proteins at Scale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304461. [PMID: 37658732 DOI: 10.1002/adma.202304461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Indexed: 09/05/2023]
Abstract
Self-assembly, the spontaneous ordering of components into patterns, is widespread in nature and fundamental to generating function across length scales. Morphogen gradients in biological development are paradigmatic as both products and effectors of self-assembly and various attempts have been made to reproduce such gradients in biomaterial design. To date, approaches have typically utilized top-down fabrication techniques that, while allowing high-resolution control, are limited by scale and require chemical cross-linking steps to stabilize morphogen patterns in time. Here, a bottom-up approach to protein patterning is developed based on a novel binary reaction-diffusion process where proteins function as diffusive reactants to assemble a nanoclay-protein composite hydrogel. Using this approach, it is possible to generate scalable and highly stable 3D patterns of target proteins down to sub-cellular resolution through only physical interactions between clay nanoparticles and the proteins and ions present in blood. Patterned nanoclay gels are able to guide cell behavior to precisely template bone tissue formation in vivo. These results demonstrate the feasibility of stabilizing 3D gradients of biological signals through self-assembly processes and open up new possibilities for morphogen-based therapeutic strategies and models of biological development and repair.
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Affiliation(s)
- Roxanna S Ramnarine-Sanchez
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Janos M Kanczler
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Nicholas D Evans
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Richard O C Oreffo
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Jonathan I Dawson
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
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2
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Kakinoki K, Kurasawa R, Maki Y, Dobashi T, Yamamoto T. Gelation and Orientation Dynamics Induced by Contact of Protein Solution with Transglutaminase Solution. Gels 2023; 9:478. [PMID: 37367148 DOI: 10.3390/gels9060478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/30/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
Gel growth induced by contact of polymer solutions with crosslinker solutions yields an emerging class of anisotropic materials with many potential applications. Here, we report the case of a study on the dynamics in forming anisotropic gels using this approach with an enzyme as a trigger of gelation and gelatin as the polymer. Unlike the previously studied cases of gelation, the isotropic gelation was followed by gel polymer orientation after a lag time. The isotropic gelation dynamics did not depend on concentrations of the polymer turning into gel and of the enzyme inducing gelation, whereas, for the anisotropic gelation, the square of the gel thickness was a linear function of the elapsed time, and the slope increased with polymer concentration. The gelation dynamics of the present system was explained by a combination of diffusion-limited gelation followed by free-energy-limited orientation of polymer molecules.
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Affiliation(s)
- Kasumi Kakinoki
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan
| | - Ryuta Kurasawa
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan
| | - Yasuyuki Maki
- Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Toshiaki Dobashi
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan
| | - Takao Yamamoto
- Division of Pure and Applied Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan
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3
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Yamamoto T. Relationship between Rate-Limiting Process and Scaling Law in Gel Growth Induced by Liquid-Liquid Contact. Gels 2023; 9:gels9050359. [PMID: 37232951 DOI: 10.3390/gels9050359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/15/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023] Open
Abstract
Gelation through the liquid-liquid contact between a polymer solution and a gelator solution has been attempted with various combinations of gelator and polymer solutions. In many combinations, the gel growth dynamics is expressed as X∼t, where X is the gel thickness and t is the elapsed time, and the scaling law holds for the relationship between X and t. In the blood plasma gelation, however, the crossover of the growth behavior from X∼t in the early stage to X∼t in the late stage was observed. It was found that the crossover behavior is caused by a change in the rate-limiting process of growth from the free-energy-limited process to the diffusion-limited process. How, then, would the crossover phenomenon be described in terms of the scaling law? We found that the scaling law does not hold in the early stage owing to the characteristic length attributable to the free energy difference between the sol-gel phases, but it does in the late stage. We also discussed the analysis method for the crossover in terms of the scaling law.
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Affiliation(s)
- Takao Yamamoto
- Division of Pure and Applied Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan
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4
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Yonemoto J, Maki Y, Koh I, Furusawa K, Annaka M. Formation of Multi-Channel Collagen Gels Investigated Using Particle Tracking Microrheology. Biomacromolecules 2021; 22:3819-3826. [PMID: 34343432 DOI: 10.1021/acs.biomac.1c00666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Collagen is one of the most common materials used to form scaffolds for tissue engineering applications. The multi-channel collagen gel (MCCG) obtained by the dialysis of an acidic collagen solution in a neutral buffer solution has a unique structure, with many capillaries of diameters several tens to a few hundred micrometers, and could be a potential candidate as a biomimetic scaffold for three-dimensional tissue engineering. In the present study, the formation of MCCG was investigated by in situ rheological measurements based on a particle tracking method (particle tracking microrheology, PTM). PTM enabled us to measure changes in the rheological properties of collagen solutions under the continuous exchange of substances during dialysis. When an observation plane was set perpendicular to the direction of gel growth, we first observed convectional flow of the collagen solution, followed by phase separation and gelation. We showed that the structure of the MCCG originated from the transient structure formed during the initial stage of viscoelastic phase separation and was fixed by the subsequent gelation.
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Affiliation(s)
- Junta Yonemoto
- Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan
| | - Yasuyuki Maki
- Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan
| | - Isabel Koh
- RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kazuya Furusawa
- Department of Environmental and Food Sciences, Fukui University of Technology, Gakuen 3-6-1, Fukui, Fukui 910-8505, Japan
| | - Masahiko Annaka
- Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan
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5
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Yu XD, Li JH, Li H, Huang J, Caccavo D, Lamberti G, Chu LQ. Gelation process of carboxymethyl chitosan-zinc supramolecular hydrogel studied with fluorescence imaging and mathematical modelling. Int J Pharm 2021; 605:120804. [PMID: 34144132 DOI: 10.1016/j.ijpharm.2021.120804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/01/2021] [Accepted: 06/12/2021] [Indexed: 11/19/2022]
Abstract
Herein we report on a detailed study about the gelation kinetics of carboxymethyl chitosan-zinc (CMCh-Zn) supramolecular hydrogel by taking advantage of its intrinsic fluorescence property. A specific gelation device is designed and the gel front can be directly visualized under 365 nm UV light. The results show that when increasing Zn2+ concentration from 0.1 M to 1.0 M, the apparent diffusion coefficient increases gradually from 2.72 × 10-6 cm2/s to 4.50 × 10-6 cm2/s. The gelation kinetics then is described with a "zero order" mathematical model, proving that the gel thickness is related to the square root of the gelation time and the diffusion step is the controlling step of the gelation process. Later a more advanced model, developed in 1D geometry and solved numerically, is used to describe and predict experimental results, proving its reliability and the correct description of all the phenomena involved in the gelation process of CMCh-Zn hydrogel.
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Affiliation(s)
- Xu-Dong Yu
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Jia-Hui Li
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Heng Li
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Ju Huang
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Diego Caccavo
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Eng4Life Srl, Academic spin-off, Via Fiorentino, 32, 83100 Avellino, Italy.
| | - Gaetano Lamberti
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Eng4Life Srl, Academic spin-off, Via Fiorentino, 32, 83100 Avellino, Italy
| | - Li-Qiang Chu
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China.
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6
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Lopez CG, Richtering W. Oscillatory rheology of carboxymethyl cellulose gels: Influence of concentration and pH. Carbohydr Polym 2021; 267:118117. [PMID: 34119123 DOI: 10.1016/j.carbpol.2021.118117] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/02/2021] [Accepted: 04/18/2021] [Indexed: 11/30/2022]
Abstract
The flow properties of ionic polysaccharides are determined by the interplay of electrostatic and hydrophobic interactions, which depend on the ionic strength and pH of the solvent. We explore the LVE and LAOS rheology of carboxymethyl cellulose (CMC) in aqueous media, focusing on its gelling behaviour. We find that addition of HCl promotes gel formation and addition of NaOH suppresses it. The former effect is interpreted as being caused by a decrease of the charge density of the polymer, which facilitates interchain associations and the later effect can be assigned to solubilisation of cellulose backbone by NaOH. Our results along with a review of the literature allow us to establish the concentration regimes and associated properties of physical gels of carboxymethyl cellulose. At neutral pH, the storage modulus of NaCMC gels of varying molecular weight and DS at a given concentration does not vary by more than a factor 5.
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Affiliation(s)
- Carlos G Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
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7
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Mredha MTI, Tran VT, Jeong SG, Seon JK, Jeon I. A diffusion-driven fabrication technique for anisotropic tubular hydrogels. SOFT MATTER 2018; 14:7706-7713. [PMID: 30187062 DOI: 10.1039/c8sm01235k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A bio-inspired, simple, and versatile diffusion-driven method to fabricate complex tubular hydrogels is reported. The controlled diffusion of small ions from a pre-designed core hydrogel through a biopolymer reservoir solution causes the self-gelation of biopolymers with an anisotropic ordered structure on the surface of the core hydrogel. By controlling the concentration, diffusion time, and flow direction of the ions, as well as the size and shape of the core, various types of complex tubular-shaped hydrogels with well-defined 3D architectures were fabricated. The mechanical properties of the designed alginate-based tubular hydrogels were highly tunable and comparable to those of native blood vessels. The method was applied to form a living-cell encapsulated tubular hydrogel, which further strengthens its potential for biomedical applications. The method is suitable for biopolymer-based reaction-diffusion systems and available for further research on the fabrication of functional biomaterials with various biopolymers.
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Affiliation(s)
- Md Tariful Islam Mredha
- School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea.
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8
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Maki Y, Furusawa K, Yamamoto T, Dobashi T. Structure formation in biopolymer gels induced by diffusion of gelling factors. ACTA ACUST UNITED AC 2018. [DOI: 10.17106/jbr.32.27] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yasuyuki Maki
- Department of Chemistry, Faculty of Science, Kyushu University
| | | | - Takao Yamamoto
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University
| | - Toshiaki Dobashi
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University
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9
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Yahata S, Furusawa K, Nagao K, Nakajima M, Fukuda T. Effects of Three-Dimensional Culture of Mouse Calvaria-Derived Osteoblastic Cells in a Collagen Gel with a Multichannel Structure on the Morphogenesis Behaviors of Engineered Bone Tissues. ACS Biomater Sci Eng 2017; 3:3414-3424. [DOI: 10.1021/acsbiomaterials.7b00190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Toshio Fukuda
- Department
of Mechatronics Engineering, Meijo University, 1-501, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan
- Intelligent
Robotics Institute, Beijing Institute of Technology, 5 South Zhongguancun
Street, Haidian District, Beijing 100081, China
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10
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Furusawa K, Mizutani T, Machino H, Yahata S, Fukui A, Sasaki N. Application of Multichannel Collagen Gels in Construction of Epithelial Lumen-like Engineered Tissues. ACS Biomater Sci Eng 2015; 1:539-548. [DOI: 10.1021/acsbiomaterials.5b00003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuya Furusawa
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Takeomi Mizutani
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Hiromi Machino
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Saki Yahata
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Akimasa Fukui
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
| | - Naoki Sasaki
- Faculty of Advanced Life Science, and ‡Division of Biological Sciences
(Macromolecular Functions), School of Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido Japan
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11
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Tomita N, Naito D, Rokugawa I, Yamamoto T, Dobashi T. Model carcinogen adsorption dynamics of DNA gel. Colloids Surf B Biointerfaces 2014; 121:122-8. [PMID: 24967547 DOI: 10.1016/j.colsurfb.2014.05.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 05/25/2014] [Accepted: 05/28/2014] [Indexed: 10/25/2022]
Abstract
We have derived theoretical equations describing the adsorption of carcinogen to gels in an immersion medium containing carcinogens. The theory was developed for a cylindrical boundary condition under the assumption of a carcinogen diffusion-limited process combined with the "moving boundary picture (Furusawa et al., 2007)". The time course of the adsorbed carcinogen layer thickness and that of the carcinogen concentration in an immersion medium were expressed by a set of scaled variables, and the asymptotic behavior in the initial stage was derived. Experiments based on the theory were performed using a DNA gel sandwiched between a set of coverglasses in a medium containing acridine orange (AO). The boundary between the AO-adsorbed gel layer and AO-nonadsorbed gel layer was traced during the immersion. The time courses of the AO-adsorbed gel layer thickness and the AO concentration in the immersion medium were well explained by the theory, and the number ratio of the total AO molecules to the adsorption sites in the DNA gel was determined.
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Affiliation(s)
- Naoko Tomita
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Daisuke Naito
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Isamu Rokugawa
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Takao Yamamoto
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Toshiaki Dobashi
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
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12
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Maki Y, Furusawa K, Yasuraoka S, Okamura H, Hosoya N, Sunaga M, Dobashi T, Sugimoto Y, Wakabayashi K. Universality and specificity in molecular orientation in anisotropic gels prepared by diffusion method. Carbohydr Polym 2014; 108:118-26. [DOI: 10.1016/j.carbpol.2014.03.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 02/12/2014] [Accepted: 03/03/2014] [Indexed: 10/25/2022]
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13
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Furusawa K, Sato S, Masumoto JI, Hanazaki Y, Maki Y, Dobashi T, Yamamoto T, Fukui A, Sasaki N. Studies on the Formation Mechanism and the Structure of the Anisotropic Collagen Gel Prepared by Dialysis-Induced Anisotropic Gelation. Biomacromolecules 2011; 13:29-39. [DOI: 10.1021/bm200869p] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kazuya Furusawa
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo,
Hokkaido, Japan
| | - Shoichi Sato
- Transdisciplinary
Life Science
Course, Graduate School of Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido, Japan
| | - Jyun-ichi Masumoto
- Transdisciplinary
Life Science
Course, Graduate School of Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido, Japan
| | - Yohei Hanazaki
- Transdisciplinary
Life Science
Course, Graduate School of Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo, Hokkaido, Japan
| | - Yasuyuki Maki
- Department of Chemistry
and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - Toshiaki Dobashi
- Department of Chemistry
and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - Takao Yamamoto
- Department of Chemistry
and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - Akimasa Fukui
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo,
Hokkaido, Japan
| | - Naoki Sasaki
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo,
Hokkaido, Japan
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14
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Maki Y, Ito K, Hosoya N, Yoneyama C, Furusawa K, Yamamoto T, Dobashi T, Sugimoto Y, Wakabayashi K. Anisotropic Structure of Calcium-Induced Alginate Gels by Optical and Small-Angle X-ray Scattering Measurements. Biomacromolecules 2011; 12:2145-52. [DOI: 10.1021/bm200223p] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasuyuki Maki
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Kei Ito
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Natsuki Hosoya
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Chikayoshi Yoneyama
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Kazuya Furusawa
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Takao Yamamoto
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Toshiaki Dobashi
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Yasunobu Sugimoto
- Division of Biophysical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Katsuzo Wakabayashi
- Division of Biophysical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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15
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Furusawa K, Narazaki Y, Tomita N, Dobashi T, Sasaki N, Yamamoto T. Effect of pH on Anisotropic Gelation of DNA Induced by Aluminum Cations. J Phys Chem B 2010; 114:13923-32. [DOI: 10.1021/jp102981a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- K. Furusawa
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo 060-0810, Japan, and Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - Y. Narazaki
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo 060-0810, Japan, and Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - N. Tomita
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo 060-0810, Japan, and Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - T. Dobashi
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo 060-0810, Japan, and Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - N. Sasaki
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo 060-0810, Japan, and Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
| | - T. Yamamoto
- Faculty of Advanced Life Science, Hokkaido University, Kita-ku Kita 10 Nishi 8, Sapporo 060-0810, Japan, and Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjincho 1-5-1, Kiryu, Gunma, Japan
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16
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Yamamoto T, Tomita N, Maki Y, Dobashi T. Dynamics in the Process of Formation of Anisotropic Chitosan Hydrogel. J Phys Chem B 2010; 114:10002-9. [DOI: 10.1021/jp102207w] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takao Yamamoto
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Naoko Tomita
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Yasuyuki Maki
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Toshiaki Dobashi
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
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