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Ishikawa S, Iwanaga Y, Uneyama T, Li X, Hojo H, Fujinaga I, Katashima T, Saito T, Okada Y, Chung UI, Sakumichi N, Sakai T. Percolation-induced gel-gel phase separation in a dilute polymer network. NATURE MATERIALS 2023; 22:1564-1570. [PMID: 37903925 DOI: 10.1038/s41563-023-01712-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 10/02/2023] [Indexed: 11/01/2023]
Abstract
Cosmic large-scale structures, animal flocks and living tissues can be considered non-equilibrium organized systems created by dissipative processes. Replicating such properties in artificial systems is still difficult. Herein we report a dissipative network formation process in a dilute polymer-water mixture that leads to percolation-induced gel-gel phase separation. The dilute system, which forms a monophase structure at the percolation threshold, spontaneously separates into two co-continuous gel phases with a submillimetre scale (a dilute-percolated gel) during the deswelling process after the completion of the gelation reaction. The dilute-percolated gel, which contains 99% water, exhibits unexpected hydrophobicity and induces the development of adipose-like tissues in subcutaneous tissues. These findings support the development of dissipative structures with advanced functionalities for distinct applications, ranging from physical chemistry to tissue engineering.
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Grants
- JPMJCR1992 MEXT | JST | Core Research for Evolutional Science and Technology (CREST)
- JPMJCR1852 MEXT | JST | Core Research for Evolutional Science and Technology (CREST)
- JPMJCR20E2 MEXT | JST | Core Research for Evolutional Science and Technology (CREST)
- Moon-shot R&D 1125941 MEXT | Japan Science and Technology Agency (JST)
- JPMJMS2025-14 MEXT | Japan Science and Technology Agency (JST)
- JPMXP1122714694 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 21H04688 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 20H05733 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 19H05794 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 19H05795 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 19K14672 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 22H01187 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 20J01344 MEXT | Japan Society for the Promotion of Science (JSPS)
- JPMJPR1992 MEXT | JST | Precursory Research for Embryonic Science and Technology (PRESTO)
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Affiliation(s)
- Shohei Ishikawa
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yasuhide Iwanaga
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Takashi Uneyama
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Xiang Li
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Hironori Hojo
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ikuo Fujinaga
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Takuya Katashima
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Taku Saito
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasushi Okada
- Laboratory for Cell Polarity Regulation, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Japan
- Department of Cell Biology, Department of Physics, Universal Biology Institute (UBI) and International Research Center for Neurointelligence (WPI-IRCN), The University of Tokyo, Tokyo, Japan
| | - Ung-Il Chung
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Naoyuki Sakumichi
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.
| | - Takamasa Sakai
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.
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2
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Tanaka Y, Shogo F, Natsuki N, Sho N, Takumitsu K. Effect of swelling and deswelling on the elasticity of polyacrylonitrile gels prepared by freezing and thawing techniques. J MACROMOL SCI B 2022. [DOI: 10.1080/00222348.2022.2127264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Yutaka Tanaka
- Dept. of Materials Science and Biotechnologies, School of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan.
| | - Furui Shogo
- Dept. of Materials Science and Biotechnologies, School of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan.
| | - Nakashima Natsuki
- Dept. of Materials Science and Biotechnologies, School of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan.
| | - Nakajima Sho
- Dept. of Materials Science and Biotechnologies, School of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan.
| | - Kida Takumitsu
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, 923-1292, Japan
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3
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Osaki M, Yonei S, Ueda C, Ikura R, Park J, Yamaguchi H, Harada A, Tanaka M, Takashima Y. Mechanical Properties with Respect to Water Content of Host–Guest Hydrogels. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00970] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Motofumi Osaki
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shin Yonei
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Chiharu Ueda
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Ryohei Ikura
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Junsu Park
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Akira Harada
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University, CE41 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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4
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Ishikawa S, Kamata H, Chung UI, Sakai T. On-demand retrieval of cells three-dimensionally seeded in injectable thioester-based hydrogels. RSC Adv 2021; 11:23637-23643. [PMID: 35479827 PMCID: PMC9036596 DOI: 10.1039/d1ra01934a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/26/2021] [Indexed: 12/26/2022] Open
Abstract
Scaffold systems that can easily encapsulate cells and safely retrieve them at the desired time are important for the advancement of cell-based medicine. In this study, we designed and fabricated thioester-based poly(ethylene glycol) (PEG) hydrogels with injectability and on-demand degradability as new scaffold materials for cells. Hydrogels can be formed in situ within minutes via thioester cross-linking between PEG molecules and can be degraded under mild conditions in response to l-cysteine molecules through thiol exchange occurring at the thioester linkage. Various cell experiments, especially with sucrose, which enables the adjustment of the osmotic pressure around the cells, showed that the damage to the cells during encapsulation and degradation was minimal, indicating the capability of on-demand retrieval of intact cells. This hydrogel system is a versatile tool in the field of cell-based research and applications such as tissue regeneration and regenerative medicine. Human mesenchymal stem/stromal cells can be three-dimensionally encapsulated in hydrogels cross-linked with thioester linkages. Degrading the cell-embedded hydrogels by l-cysteine molecules enables safe on-demand retrieval of the cells.![]()
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Affiliation(s)
- Shohei Ishikawa
- Department of Bioengineering, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan
| | - Hiroyuki Kamata
- Department of Bioengineering, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan
| | - Ung-Il Chung
- Department of Bioengineering, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan .,Center for Disease Biology and Integrative Medicine, School of Medicine, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan.,Department of Materials Engineering, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan
| | - Takamasa Sakai
- Department of Bioengineering, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan .,Department of Materials Engineering, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan
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5
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A benchmark for gel structures: bond percolation enables the fabrication of extremely homogeneous gels. Polym J 2021. [DOI: 10.1038/s41428-021-00479-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Molecular crystallization directed by polymer size and overlap under dilute and crowded macromolecular conditions. Polym J 2021. [DOI: 10.1038/s41428-021-00461-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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7
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Kim J, Fujiyabu T, Sakumichi N, Katashima T, Yoshikawa Y, Chung UI, Sakai T. Mixing and Elastic Contributions to the Diffusion Coefficient of Polymer Networks. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01427] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junhyuk Kim
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takeshi Fujiyabu
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Naoyuki Sakumichi
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takuya Katashima
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuki Yoshikawa
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ung-il Chung
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takamasa Sakai
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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