1
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Hsieh JC, He W, Venkatraghavan D, Koptelova VB, Ahmad ZJ, Pyatnitskiy I, Wang W, Jeong J, Tang KKW, Harmeier C, Li C, Rana M, Iyer S, Nayak E, Ding H, Modur P, Mysliwiec V, Schnyer DM, Baird B, Wang H. Design of an injectable, self-adhesive, and highly stable hydrogel electrode for sleep recording. DEVICE 2024; 2:100182. [PMID: 39239460 PMCID: PMC11376683 DOI: 10.1016/j.device.2023.100182] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
High-quality and continuous electroencephalogram (EEG) monitoring is desirable for sleep research, sleep monitoring, and the evaluation and treatment of sleep disorders. Existing continuous EEG monitoring technologies suffer from fragile connections, long-term stability, and complex preparation for electrodes under real-life conditions. Here, we report an injectable and spontaneously cross-linked hydrogel electrode for long-term EEG applications. Specifically, our electrodes have a long-term low impedance on hairy scalp regions of 17.53 kΩ for more than 8 h of recording, high adhesiveness on the skin of 0.92 N cm-1 with repeated attachment capability, and long-term wearability during daily activities and overnight sleep. In addition, our electrodes demonstrate a superior signal-to-noise-ratio of 23.97 decibels (dB) in comparison with commercial wet electrodes of 17.98 dB and share a high agreement of sleep stage classification with commercial wet electrodes during multichannel recording. These results exhibit the potential of our on-site-formed electrodes for high-quality, prolonged EEG monitoring in various scenarios.
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Affiliation(s)
- Ju-Chun Hsieh
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Weilong He
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Dhivya Venkatraghavan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Victoria B Koptelova
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Zoya J Ahmad
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Ilya Pyatnitskiy
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Wenliang Wang
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Jinmo Jeong
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Kevin Kai Wing Tang
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Cody Harmeier
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Conrad Li
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Manini Rana
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Sruti Iyer
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Eesha Nayak
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Hong Ding
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Pradeep Modur
- Department of Neurology, The University of Texas at Austin, Austin, TX 78712, USA
| | - Vincent Mysliwiec
- Department of Psychiatry, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - David M Schnyer
- Department of Psychology, The University of Texas at Austin, Austin, TX 78712, USA
| | - Benjamin Baird
- Department of Psychology, The University of Texas at Austin, Austin, TX 78712, USA
| | - Huiliang Wang
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Lead contact
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2
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Kaibara T, Wang L, Tsuda M, Nonoyama T, Kurokawa T, Iwasaki N, Gong JP, Tanaka S, Yasuda K. Hydroxyapatite-hybridized double-network hydrogel surface enhances differentiation of bone marrow-derived mesenchymal stem cells to osteogenic cells. J Biomed Mater Res A 2021; 110:747-760. [PMID: 34713570 DOI: 10.1002/jbm.a.37324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 09/22/2021] [Accepted: 10/15/2021] [Indexed: 01/31/2023]
Abstract
Recently, we have developed a hydroxyapatite (HAp)-hybridized double-network (DN) hydrogel (HAp/DN gel), which can robustly bond to the bone tissue in the living body. The purpose of this study is to clarify whether the HAp/DN gel surface can differentiate the bone marrow-derived mesenchymal stem cells (MSCs) to osteogenic cells. We used the MSCs which were harvested from the rabbit bone marrow and cultured on the polystyrene (PS) dish using the autogenous serum-supplemented medium. First, we confirmed the properties of MSCs by evaluating colony forming unit capacity, expression of MSC markers using flow cytometry, and multidifferential capacity. Secondly, polymerase chain reaction analysis demonstrated that the HAp/DN gel surface significantly enhanced mRNA expression of the eight osteogenic markers (TGF-β1, BMP-2, Runx2, Col-1, ALP, OPN, BSP, and OCN) in the cultured MSCs at 7 days than the PS surfaces (p < 0.0001), while the DN gel and HAp surfaces provided no or only a slight effect on the expression of these markers except for Runx2. Additionally, the alkaline phosphatase activity was significantly higher in the cells cultured on the HAp/DN gel surface than in the other three material surfaces (p < 0.0001). Thirdly, when the HAp/DN gel plug was implanted into the rabbit bone marrow, MSC marker-positive cells were recruited in the tissue generated around the plug at 3 days, and Runx2 and OCN were highly expressed in these cells. In conclusion, this study demonstrated that the HAp/DN gel surface can differentiate the MSCs into osteogenic cells.
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Affiliation(s)
- Takuma Kaibara
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.,Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Lei Wang
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Masumi Tsuda
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
| | - Takayuki Nonoyama
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Laboratory of Soft & Wet Matter, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Takayuki Kurokawa
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Laboratory of Soft & Wet Matter, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Norimasa Iwasaki
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Jian Ping Gong
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan.,Laboratory of Soft & Wet Matter, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Shinya Tanaka
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
| | - Kazunori Yasuda
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Sports Medicine and Arthroscopy Center, Yagi Orthopaedic Hospital, Sapporo, Japan
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3
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Semba S, Kitamura N, Tsuda M, Goto K, Kurono S, Ohmiya Y, Kurokawa T, Gong JP, Yasuda K, Tanaka S. Synthetic poly(2-acrylamido-2-methylpropanesulfonic acid) gel induces chondrogenic differentiation of ATDC5 cells via a novel protein reservoir function. J Biomed Mater Res A 2020; 109:354-364. [PMID: 32496623 DOI: 10.1002/jbm.a.37028] [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: 06/25/2019] [Revised: 04/12/2020] [Accepted: 04/19/2020] [Indexed: 11/09/2022]
Abstract
We previously demonstrated that a synthetic negatively charged poly(2-acrylamido-2-methylpropanesulfonic acid) (PAMPS) gel induced chondrogenic differentiation of ATDC5 cells. In this study, we clarified the underlying molecular mechanism, in particular, focusing on the events that occurred at the interface between the gel and the cells. Gene expression profiling revealed that the expression of extracellular components was enhanced in the ATDC5 cells that were cultured on the PAMPS gel, suggesting that extracellular proteins secreted from the ATDC5 cells might be adsorbed in the PAMPS gel, thereby contributing to the induction of chondrogenic differentiation. Therefore, we created "Treated-PAMPS gel," which adsorbed various proteins secreted from the cultured ATDC5 cells during 7 days. Proteomic analysis identified 27 proteins, including extracellular matrix proteins such as Types I, III, and V collagens and thrombospondin (THBS) in the Treated-PAMPS gel. The Treated-PAMPS gel preferentially induced expression of chondrogenic markers, namely, aggrecan and Type II collagen, in the ATDC5 cells compared with the untreated PAMPS gel. Addition of recombinant THBS1 to the ATDC5 cells significantly enhanced the PAMPS-induced chondrogenic differentiation, whereas knockdown of THBS1 completely abolished this response. In conclusion, we demonstrated that the PAMPS gel has the potential to induce chondrogenic differentiation through novel reservoir functions, and the adsorbed THBS plays a significant role in the induction.
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Affiliation(s)
- Shingo Semba
- Department of Sports Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Nobuto Kitamura
- Department of Sports Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Masumi Tsuda
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
| | - Keiko Goto
- Department of Sports Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Sadamu Kurono
- Laboratory of Molecular Signature Analysis, Division of Health Science, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshihiro Ohmiya
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan
| | - Takayuki Kurokawa
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Laboratory of Soft & Wet Matter, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Jian Ping Gong
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan.,Laboratory of Soft & Wet Matter, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Kazunori Yasuda
- Department of Sports Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Shinya Tanaka
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan.,Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
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4
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Kunwar P, Jannini AVS, Xiong Z, Ransbottom MJ, Perkins JS, Henderson JH, Hasenwinkel JM, Soman P. High-Resolution 3D Printing of Stretchable Hydrogel Structures Using Optical Projection Lithography. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1640-1649. [PMID: 31833757 DOI: 10.1021/acsami.9b19431] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Double-network (DN) hydrogels, with their unique combination of mechanical strength and toughness, have emerged as promising materials for soft robotics and tissue engineering. In the past decade, significant effort has been devoted to synthesizing DN hydrogels with high stretchability and toughness; however, shaping the DN hydrogels into complex and often necessary user-defined two-dimensional (2D) and three-dimensional (3D) geometries remains a fabrication challenge. Here, we report a new fabrication method based on optical projection lithography to print DN hydrogels into customizable 2D and 3D structures within minutes. DN hydrogels were printed by first photo-crosslinking a single network structure via spatially modulated light patterns followed by immersing the printed structure in a calcium bath to induce ionic cross-linking. Results show that DN structures made by this method can stretch four times their original lengths. We show that strain and the elastic modulus of printed structures can be tuned based on the hydrogel composition, cross-linker and photoinitiator concentrations, and laser light intensity. To our knowledge, this is the first report demonstrating quick lithography and high-resolution printing of DN (covalent and ionic) hydrogels within minutes. The ability to shape tough and stretchable DN hydrogels in complex structures will be potentially useful in a broad range of applications.
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Affiliation(s)
- Puskal Kunwar
- Department of Chemical and Bioengineering , Syracuse University , Syracuse , New York 13244 , United States
| | | | - Zheng Xiong
- Department of Chemical and Bioengineering , Syracuse University , Syracuse , New York 13244 , United States
| | - Mark James Ransbottom
- Department of Chemical and Bioengineering , Syracuse University , Syracuse , New York 13244 , United States
| | - Jamila Shani Perkins
- Department of Chemical and Bioengineering , Syracuse University , Syracuse , New York 13244 , United States
| | - James H Henderson
- Department of Chemical and Bioengineering , Syracuse University , Syracuse , New York 13244 , United States
| | - Julie M Hasenwinkel
- Department of Chemical and Bioengineering , Syracuse University , Syracuse , New York 13244 , United States
| | - Pranav Soman
- Department of Chemical and Bioengineering , Syracuse University , Syracuse , New York 13244 , United States
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5
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Fuchs S, Shariati K, Ma M. Specialty Tough Hydrogels and Their Biomedical Applications. Adv Healthc Mater 2020; 9:e1901396. [PMID: 31846228 PMCID: PMC7586320 DOI: 10.1002/adhm.201901396] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/23/2019] [Indexed: 02/06/2023]
Abstract
Hydrogels have long been explored as attractive materials for biomedical applications given their outstanding biocompatibility, high water content, and versatile fabrication platforms into materials with different physiochemical properties and geometries. Nonetheless, conventional hydrogels suffer from weak mechanical properties, restricting their use in persistent load-bearing applications often required of materials used in medical settings. Thus, the fabrication of mechanically robust hydrogels that can prolong the lifetime of clinically suitable materials under uncompromising in vivo conditions is of great interest. This review focuses on design considerations and strategies to construct such tough hydrogels. Several promising advances in the proposed use of specialty tough hydrogels for soft actuators, drug delivery vehicles, adhesives, coatings, and in tissue engineering settings are highlighted. While challenges remain before these specialty tough hydrogels will be deemed translationally acceptable for clinical applications, promising preliminary results undoubtedly spur great hope in the potential impact this embryonic research field can have on the biomedical community.
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Affiliation(s)
- Stephanie Fuchs
- Department of Biological and Environmental Engineering, Cornell University, Riley Robb Hall 322, Ithaca, NY, 14853, USA
| | - Kaavian Shariati
- Department of Biological and Environmental Engineering, Cornell University, Riley Robb Hall 322, Ithaca, NY, 14853, USA
| | - Minglin Ma
- Department of Biological and Environmental Engineering, Cornell University, Riley Robb Hall 322, Ithaca, NY, 14853, USA
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6
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Surface-attached dual-functional hydrogel for controlled cell adhesion based on poly(N,N-dimethylacrylamide). JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1728-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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7
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Liu Y, He W, Zhang Z, Lee BP. Recent Developments in Tough Hydrogels for Biomedical Applications. Gels 2018; 4:E46. [PMID: 30674822 PMCID: PMC6209285 DOI: 10.3390/gels4020046] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/14/2018] [Accepted: 05/17/2018] [Indexed: 12/15/2022] Open
Abstract
A hydrogel is a three-dimensional polymer network with high water content and has been attractive for many biomedical applications due to its excellent biocompatibility. However, classic hydrogels are mechanically weak and unsuitable for most physiological load-bearing situations. Thus, the development of tough hydrogels used in the biomedical field becomes critical. This work reviews various strategies to fabricate tough hydrogels with the introduction of non-covalent bonds and the construction of stretchable polymer networks and interpenetrated networks, such as the so-called double-network hydrogel. Additionally, the design of tough hydrogels for tissue adhesive, tissue engineering, and soft actuators is reviewed.
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Affiliation(s)
- Yuan Liu
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA.
| | - Weilue He
- FM Wound Care LLC, Hancock, MI 49930, USA.
| | - Zhongtian Zhang
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931, USA.
| | - Bruce P Lee
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931, USA.
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8
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Mredha MTI, Kitamura N, Nonoyama T, Wada S, Goto K, Zhang X, Nakajima T, Kurokawa T, Takagi Y, Yasuda K, Gong JP. Anisotropic tough double network hydrogel from fish collagen and its spontaneous in vivo bonding to bone. Biomaterials 2017; 132:85-95. [DOI: 10.1016/j.biomaterials.2017.04.005] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 03/31/2017] [Accepted: 04/03/2017] [Indexed: 11/25/2022]
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9
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Higa K, Kitamura N, Goto K, Kurokawa T, Gong JP, Kanaya F, Yasuda K. Effects of osteochondral defect size on cartilage regeneration using a double-network hydrogel. BMC Musculoskelet Disord 2017; 18:210. [PMID: 28532476 PMCID: PMC5440932 DOI: 10.1186/s12891-017-1578-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/12/2017] [Indexed: 12/14/2022] Open
Abstract
Background There has been increased interest in one-step cell-free procedures to avoid the problems related to cell manipulation and its inherent disadvantages. We have studied the chondrogenic induction ability of a PAMPS/PDMAAm double-network (DN) gel and found it to induce chondrogenesis in animal osteochondral defect models. The purpose of this study was to investigate whether the healing process and the degree of cartilage regeneration induced by the cell-free method using DN gel are influenced by the size of osteochondral defects. Methods A total of 63 mature female Japanese white rabbits were used in this study, randomly divided into 3 groups of 21 rabbits each. A 2.5-mm diameter osteochondral defect was created in the femoral trochlea of the patellofemoral joint of bilateral knees in Group I, a 4.3-mm osteochondral defect in Group II, and a 5.8-mm osteochondral defect in Group III. In the right knee of each animal, a DN gel plug was implanted so that a vacant space of 2-mm depth was left above the plug. In the left knee, we did not conduct any treatment to obtain control data. Animals were sacrificed at 2, 4, and 12 weeks after surgery, and gross and histological evaluations were made. Results The present study demonstrated that all sizes of the DN gel implanted defects as well as the 2.5mm untreated defects showed cartilage regeneration at 4 and 12 weeks. The 4.3-mm and 5.8-mm untreated defects did not show cartilage regeneration during the 12-week period. The quantitative score reported by O’Driscoll et al. was significantly higher in the 4.3-mm and 5.8-mm DN gel-implanted defects than the untreated defects at 4 and 12 weeks (p < 0.05). The 2.5-mm and 4.3-mm DN gel implanted defects maintained relatively high macroscopic and histological scores for the 12-week implantation period, while the histological score of the 5.8-mm DN gel implanted defect had decreased somewhat but statistically significantly at 12 weeks (p = 0.0057). Conclusions The DN gel induced cartilage regeneration in defects between 2.5 and 5.8 mm, offering a promising device to establish a cell-free cartilage regeneration therapy and applicable to various sizes of osteochondral defects.
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Affiliation(s)
- Kotaro Higa
- Department of Sports Medicine, Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.,Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Nobuto Kitamura
- Department of Sports Medicine, Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan. .,Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan.
| | - Keiko Goto
- Department of Sports Medicine, Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Takayuki Kurokawa
- Laboratory of Soft and Wet Matter, Department of Advanced Transdisciplinary Sciences, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
| | - Jian Ping Gong
- Laboratory of Soft and Wet Matter, Department of Advanced Transdisciplinary Sciences, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan.,Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
| | - Fuminori Kanaya
- Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Kazunori Yasuda
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
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10
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Hydroxyapatite-coated double network hydrogel directly bondable to the bone: Biological and biomechanical evaluations of the bonding property in an osteochondral defect. Acta Biomater 2016; 44:125-34. [PMID: 27523030 DOI: 10.1016/j.actbio.2016.08.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 07/09/2016] [Accepted: 08/11/2016] [Indexed: 01/24/2023]
Abstract
UNLABELLED We have developed a novel hydroxyapatite (HAp)-coated double-network (DN) hydrogel (HAp/DN gel). The purpose of this study was to determine details of the cell and tissue responses around the implanted HAp/DN gel and to determine how quickly and strongly the HAp/DN gel bonds to the bone in a rabbit osteochondral defect model. Immature osteoid tissue was formed in the space between the HAp/DN gel and the bone at 2weeks, and the osteoid tissue was mineralized at 4weeks. The push-out load of the HAp/DN gel averaged 37.54N and 42.15N at 4 and 12weeks, respectively, while the push-out load of the DN gel averaged less than 5N. The bonding area of the HAp/DN gel to the bone was above 80% by 4weeks, and above 90% at 12weeks. This study demonstrated that the HAp/DN gel enhanced osseointegration at an early stage after implantation. The presence of nanoscale structures in addition to osseointegration of HAp promoted osteoblast adhesion onto the surface of the HAp/DN gel. The HAp/DN gel has the potential to improve the implant-tissue interface in next-generation orthopaedic implants such as artificial cartilage. STATEMENT OF SIGNIFICANCE Recent studies have reported the development of various hydrogels that are sufficiently tough for application as soft supporting tissues. However, fixation of hydrogels on bone surfaces with appropriate strength is a great challenge. We have developed a novel, tough hydrogel hybridizing hydroxyapatite (HAp/DN gel), which is directly bondable to the bone. The present study demonstrated that the HAp/DN gel enhanced osseointegration in the early stage after implantation. The presence of nanoscale structures in addition to the osseointegration ability of hydroxyapatite promoted osteoblast adhesion onto the surface of the HAp/DN gel. The HAp/DN gel has the potential to improve the implant-tissue interface in next-generation orthopaedic implants such as artificial cartilage.
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11
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Higa K, Kitamura N, Kurokawa T, Goto K, Wada S, Nonoyama T, Kanaya F, Sugahara K, Gong JP, Yasuda K. Fundamental biomaterial properties of tough glycosaminoglycan-containing double network hydrogels newly developed using the molecular stent method. Acta Biomater 2016; 43:38-49. [PMID: 27427226 DOI: 10.1016/j.actbio.2016.07.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/01/2016] [Accepted: 07/13/2016] [Indexed: 12/18/2022]
Abstract
UNLABELLED The purpose of this study was to clarify fundamental mechanical properties and biological responses of the sodium hyaluronate-containing double network (HA-DN) gel and chondroitin sulfate-containing double network (CS-DN) gel, which were newly developed using the molecular stent method. This study discovered the following facts. First, these hydrogels had high mechanical performance comparable to the native cartilage tissue, and the mechanical properties were not affected by immersion in the saline solution for 12weeks. Secondly, the mechanical properties of the CS-DN gel were not significantly reduced at 12weeks in vivo, while the mechanical properties of the HA-DN gel were significantly deteriorated at 6weeks. Thirdly, the degree of inflammation around the HA-DN gel was the same as that around the negative control. The CS-DN gel showed a mild but significant foreign body reaction, which was significantly greater than the negative control and less than the positive control at 1week, while the inflammation was reduced to the same level as the negative control at 4 and 6weeks. Fourthly, these gels induced differentiation of the ATDC5 cells into chondrocytes in the culture with the insulin-free maintenance medium. These findings suggest that these tough hydrogels are potential biomaterials for future application to therapeutic implants such as artificial cartilage. STATEMENT OF SIGNIFICANCE The present study reported fundamental biomaterial properties of the sodium hyaluronate-containing double network (HA-DN) gel and chondroitin sulfate-containing double network (CS-DN) gel, which were newly developed using the molecular stent method. Both the HA- and CS-DN gels had high mechanical properties comparable to the cartilage tissue and showed the ability to induce chondrogenic differentiation of ATDC5 cells in vitro. They are potential biomaterials that may meet the requirements of artificial cartilage concerning the material properties. Further, these DN gels can be also applied to the implantable inducer for cell-free cartilage regeneration therapy.
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12
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Nonoyama T, Wada S, Kiyama R, Kitamura N, Mredha MTI, Zhang X, Kurokawa T, Nakajima T, Takagi Y, Yasuda K, Gong JP. Double-Network Hydrogels Strongly Bondable to Bones by Spontaneous Osteogenesis Penetration. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:6740-6745. [PMID: 27184968 DOI: 10.1002/adma.201601030] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/15/2016] [Indexed: 06/05/2023]
Abstract
On implanting hydroxyapatite-mineralized tough hydrogel into osteochondral defects of rabbits, osteogenesis spontaneously penetrates into the gel matrix owing to the semi-permeablility of the hydrogel. The gradient layer (around 40 μm thick) contributes quite strong bonding of the gel to bone. This is the first success in realizing the robust osteointegration of tough hydrogels, and the method is simple and feasible for practical use.
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Affiliation(s)
- Takayuki Nonoyama
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, 060-0810, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, 060-0810, Japan
| | - Susumu Wada
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, 060-0810, Japan
| | - Ryuji Kiyama
- Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Nobuto Kitamura
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, 060-0810, Japan
| | | | - Xi Zhang
- Faculty of Fisheries Science, Hokkaido University, Hakodate, 041-8611, Japan
| | - Takayuki Kurokawa
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, 060-0810, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, 060-0810, Japan
| | - Tasuku Nakajima
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, 060-0810, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yasuaki Takagi
- Faculty of Fisheries Science, Hokkaido University, Hakodate, 041-8611, Japan
| | - Kazunori Yasuda
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, 060-0810, Japan
| | - Jian Ping Gong
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, 060-0810, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, 060-0810, Japan
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Chemical structure and remarkably enhanced mechanical properties of chitosan-graft-poly(acrylic acid)/polyacrylamide double-network hydrogels. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1697-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Kitamura N, Yokota M, Kurokawa T, Gong JP, Yasuda K. In vivo cartilage regeneration induced by a double-network hydrogel: Evaluation of a novel therapeutic strategy for femoral articular cartilage defects in a sheep model. J Biomed Mater Res A 2016; 104:2159-65. [PMID: 27087198 DOI: 10.1002/jbm.a.35745] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 04/01/2016] [Accepted: 04/15/2016] [Indexed: 11/09/2022]
Abstract
The purpose of this study was to establish the efficacy of a therapeutic strategy for an articular cartilage defect using a poly-(2-acrylamido-2-methylpropanesulfonic acid)/poly-(N,N'-dimethyl acrylamide) DN gel in a sheep model. Seventeen mature sheep were used in this study. We created a 6.0-mm osteochondral defect in the femoral trochlea of the patellofemoral (PF) joint and the medial condyle of the tibiofemoral (TF) joint. A cylindrical DN gel plug was implanted into the defect of the right knee so that a vacant space of the planned depths of 2.0 mm in group I, 3.0 mm in group II, and 4.0 mm in group III were left. In the left knee, we created a defect with the same depth as the right knee. The regenerated tissues were evaluated with the O'Driscoll score and real-time PCR analysis of the cartilage marker genes at 12 weeks. The DN gel implanted defect of group II in the PF and TF joints was completely filled with a sufficient volume of the proteoglycan-rich tissue stained with Safranin-O. The score showed that group II was significantly greater than groups I and III when treated with DN gel in the PF joint (p = 0.0441, p = 0.0174, respectively) and in the TF joint (p = 0.0019, p = 0.0006, respectively). This study has clarified the short-term efficacy of the cartilage regeneration strategy using the DN gel in a sheep model. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 2159-2165, 2016.
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Affiliation(s)
- Nobuto Kitamura
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masashi Yokota
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takayuki Kurokawa
- Laboratory of Soft and Wet Matter, Department of Advanced Transdisciplinary Sciences, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Jian Ping Gong
- Laboratory of Soft and Wet Matter, Department of Advanced Transdisciplinary Sciences, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Kazunori Yasuda
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Matsuda T, Nakajima T, Fukuda Y, Hong W, Sakai T, Kurokawa T, Chung UI, Gong JP. Yielding Criteria of Double Network Hydrogels. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02592] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Wei Hong
- Department
of Aerospace Engineering, Iowa State University, 2271 Howe Hall, Ames, Iowa 50011-2271, United States
| | - Takamasa Sakai
- Graduate
School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | | | - Ung-il Chung
- Graduate
School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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16
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Goto K, Kimura T, Kitamura N, Semba S, Ohmiya Y, Aburatani S, Matsukura S, Tsuda M, Kurokawa T, Ping Gong J, Tanaka S, Yasuda K. Synthetic PAMPS gel activates BMP/Smad signaling pathway in ATDC5 cells, which plays a significant role in the gel-induced chondrogenic differentiation. J Biomed Mater Res A 2015; 104:734-746. [DOI: 10.1002/jbm.a.35615] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/08/2015] [Accepted: 11/11/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Keiko Goto
- Department of Sports Medicine; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Taichi Kimura
- Department of Cancer Pathology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Nobuto Kitamura
- Department of Sports Medicine; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Shingo Semba
- Department of Sports Medicine; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Yoshihiro Ohmiya
- Biomedical Research Institute; National Institute of Advanced Industrial Science and Technology; Tsukuba Japan
| | - Sachiyo Aburatani
- Computational Biology Research Center; National Institute of Advanced Industrial Science and Technology; Tokyo Japan
| | - Satoko Matsukura
- Biomedical Research Institute; National Institute of Advanced Industrial Science and Technology; Tsukuba Japan
| | - Masumi Tsuda
- Department of Cancer Pathology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Takayuki Kurokawa
- Laboratory of Soft and Wet Matter; Department of Advanced Transdisciplinary Sciences; Hokkaido University Faculty of Advanced Life Science; Sapporo Japan
| | - Jian Ping Gong
- Laboratory of Soft and Wet Matter; Department of Advanced Transdisciplinary Sciences; Hokkaido University Faculty of Advanced Life Science; Sapporo Japan
| | - Shinya Tanaka
- Department of Cancer Pathology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Kazunori Yasuda
- Department of Sports Medicine; Hokkaido University Graduate School of Medicine; Sapporo Japan
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17
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Nonoyama T, Gong JP. Double-network hydrogel and its potential biomedical application: A review. Proc Inst Mech Eng H 2015; 229:853-63. [DOI: 10.1177/0954411915606935] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Double-network hydrogels are one of the most promising candidates as artificial soft supporting tissues owing to their excellent mechanical performance, water storage capability, and biocompatibility. A double-network hydrogel consists of two contrasting polymer networks: rigid and brittle first network and soft and ductile second network. To satisfy this double-network requirement, polyelectrolyte and neutral polymer are suitable as the first and the second networks, respectively. Combination of these two networks gives rise to extraordinarily tough double-network hydrogel as a result of substantial internal fracture of the brittle first network at large deformation, which contributes to the energy dissipation. Therefore, the first network serves as the sacrificial bonds to toughen the material. The double-network principle is universal and many kinds of double-network hydrogels composed of various chemical species have been developed. Moreover, a molecular stent technology has been developed to synthesize the double-network hydrogels using neutral polymer network as the brittle first network. The sulfonic double-network hydrogel was found to induce spontaneous hyaline cartilage regeneration in vivo.
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Affiliation(s)
- Takayuki Nonoyama
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Jian Ping Gong
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
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Zheng WJ, Liu ZQ, Xu F, Gao J, Chen YM, Gong JP, Osada Y. In Vitro Platelet Adhesion of PNaAMPS/PAAm and PNaAMPS/PDMAAm Double-Network Hydrogels. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201400481] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wen Jiang Zheng
- School of Science, State Key Laboratory for Mechanical Behavior of Materials; Collaborative Innovation Center of Suzhou Nano Science and Technology; Jiaotong University; Xi'an 710049 P.R. China
| | - Zhen Qi Liu
- School of Science, State Key Laboratory for Mechanical Behavior of Materials; Collaborative Innovation Center of Suzhou Nano Science and Technology; Jiaotong University; Xi'an 710049 P.R. China
| | - Feng Xu
- School of Life Science and Technology; MOE Key Laboratory of Biomedical Information Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
- Bioinspired Engineering and Biomechanics Center; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Jie Gao
- School of Science, State Key Laboratory for Mechanical Behavior of Materials; Collaborative Innovation Center of Suzhou Nano Science and Technology; Jiaotong University; Xi'an 710049 P.R. China
| | - Yong Mei Chen
- School of Science, State Key Laboratory for Mechanical Behavior of Materials; Collaborative Innovation Center of Suzhou Nano Science and Technology; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Jian Ping Gong
- Faculty of Advanced Life Science; Hokkaido University; Sapporo 060-0810 Japan
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Kitamura N, Kurokawa T, Fukui T, Gong JP, Yasuda K. Hyaluronic acid enhances the effect of the PAMPS/PDMAAm double-network hydrogel on chondrogenic differentiation of ATDC5 cells. BMC Musculoskelet Disord 2014; 15:222. [PMID: 24997593 PMCID: PMC4107725 DOI: 10.1186/1471-2474-15-222] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 07/02/2014] [Indexed: 11/30/2022] Open
Abstract
Background A double-network (DN) gel, which was composed of poly-(2-Acrylamido-2-methylpropanesulfonic acid) and poly-(N,N’-dimethyl acrylamide) (PAMPS/PDMAAm), has the potential to induce chondrogenesis both in vitro and in vivo. The present study investigated whether DN gel induced chondrogenic differentiation of ATDC5 cells in a maintenance medium without insulin, and whether supplementation of hyaluronic acid enhanced the chondrogenic differentiation effect of DN gel. Methods ATDC5 cells were cultured on the DN gel and the polystyrene (PS) dish in maintenance media without insulin for 21 days. Hyaluronic acid having a molecular weight of approximately 800 kDa was supplemented into the medium so that the concentration became 0.01, 0.1, or 1.0 mg/mL. The cultured cells were evaluated using immunocytochemistry for type-2 collagen and real time PCR for gene expression of type-2 collagen, aggrecan, and Sox9 at 7 and 21 days of culture. Results The cells cultured on the DN gel formed nodules and were stained with an anti-type-2 collagen antibody, and expression of type-2 collagen and aggrecan mRNA was significantly greater on the DN gel than on the PS dish surface (p < 0.05) in the hyaluronic acid-free maintenance medium. Hyaluronic acid supplementation of a high concentration (1.0 mg/mL) significantly enhanced expression of type-2 collagen and aggrecan mRNA in comparison with culture without hyaluronic acid at 21 days (p < 0.05). Conclusions The DN gel induced chondrogenic differentiation of ATDC5 cells without insulin. This effect was significantly affected by hyaluronic acid, depending on the level of concentration. There is a high possibility that hyaluronic acid plays an important role in the in vivo hyaline cartilage regeneration phenomenon induced by the DN gel.
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Affiliation(s)
- Nobuto Kitamura
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo 060-8638, Japan.
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Kwon HJ, Yasuda K, Gong JP, Ohmiya Y. Polyelectrolyte hydrogels for replacement and regeneration of biological tissues. Macromol Res 2014. [DOI: 10.1007/s13233-014-2045-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Rennerfeldt DA, Renth AN, Talata Z, Gehrke SH, Detamore MS. Tuning mechanical performance of poly(ethylene glycol) and agarose interpenetrating network hydrogels for cartilage tissue engineering. Biomaterials 2013; 34:8241-57. [PMID: 23932504 PMCID: PMC3773240 DOI: 10.1016/j.biomaterials.2013.07.052] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 07/18/2013] [Indexed: 10/26/2022]
Abstract
Hydrogels are attractive for tissue engineering applications due to their incredible versatility, but they can be limited in cartilage tissue engineering applications due to inadequate mechanical performance. In an effort to address this limitation, our team previously reported the drastic improvement in the mechanical performance of interpenetrating networks (IPNs) of poly(ethylene glycol) diacrylate (PEG-DA) and agarose relative to pure PEG-DA and agarose networks. The goal of the current study was specifically to determine the relative importance of PEG-DA concentration, agarose concentration, and PEG-DA molecular weight in controlling mechanical performance, swelling characteristics, and network parameters. IPNs consistently had compressive and shear moduli greater than the additive sum of either single network when compared to pure PEG-DA gels with a similar PEG-DA content. IPNs withstood a maximum stress of up to 4.0 MPa in unconfined compression, with increased PEG-DA molecular weight being the greatest contributing factor to improved failure properties. However, aside from failure properties, PEG-DA concentration was the most influential factor for the large majority of properties. Increasing the agarose and PEG-DA concentrations as well as the PEG-DA molecular weight of agarose/PEG-DA IPNs and pure PEG-DA gels improved moduli and maximum stresses by as much as an order of magnitude or greater compared to pure PEG-DA gels in our previous studies. Although the viability of encapsulated chondrocytes was not significantly affected by IPN formulation, glycosaminoglycan (GAG) content was significantly influenced, with a 12-fold increase over a three-week period in gels with a lower PEG-DA concentration. These results suggest that mechanical performance of IPNs may be tuned with partial but not complete independence from biological performance of encapsulated cells.
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Affiliation(s)
- Deena A Rennerfeldt
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS 66045, USA
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22
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Yin H, Akasaki T, Lin Sun T, Nakajima T, Kurokawa T, Nonoyama T, Taira T, Saruwatari Y, Ping Gong J. Double network hydrogels from polyzwitterions: high mechanical strength and excellent anti-biofouling properties. J Mater Chem B 2013; 1:3685-3693. [PMID: 32261266 DOI: 10.1039/c3tb20324g] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyzwitterionic materials, which have both cationic and anionic groups in the polymeric repeat unit, show excellent anti-biofouling properties and are drawing more attention in the biomedical field. In this study, we have successfully synthesized novel single network hydrogels and double network (DN) hydrogels from the zwitterionic monomer, N-(carboxymethyl)-N,N-dimethyl-2-(methacryloyloxy) ethanaminium, inner salt (CDME). The polyCDME (PCDME) single network hydrogel behaves like a hydrophilic neutral hydrogel and its properties are not sensitive to temperature, pH, or ionic strength over a wide range. DN hydrogels using the poly(2-acrylamido-2-methylpropanesulfonic) (PAMPS) as the first network and PCDME as the second network, having a Young's modulus of 0.2-0.9 MPa, possess excellent mechanical strength (fracture stress: 1.2-1.4 MPa, fracture strain: 2.2-6.0 mm/mm) and toughness (work of extension at fracture: 0.9-2.4 MJ m-3) depending on the composition ratio of PCDME to PAMPS. The strength and toughness of the optimized PAMPS/PCDME DN is comparable to the normal PAMPS/PAAm DN hydrogels that use poly(acrylamide) (PAAm) as the second network. By macrophage adhesion test, both the PCDME hydrogels and the PAMPS/PCDME DN hydrogels have shown excellent anti-biofouling properties. These results demonstrate that the PCDME-based DN hydrogels have high potential as a novel soft and wet biomaterial.
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Affiliation(s)
- Haiyan Yin
- Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan
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Matsuda H, Kitamura N, Kurokawa T, Arakaki K, Gong JP, Kanaya F, Yasuda K. Influence of the gel thickness on in vivo hyaline cartilage regeneration induced by double-network gel implanted at the bottom of a large osteochondral defect: short-term results. BMC Musculoskelet Disord 2013; 14:50. [PMID: 23369101 PMCID: PMC3564809 DOI: 10.1186/1471-2474-14-50] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 01/29/2013] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND A double-network (DN) gel, which is composed of poly(2-acrylamido-2-methylpropanesulfonic acid) and poly(N,N'-dimethyl acrylamide), can induce hyaline cartilage regeneration in vivo in a large osteochondral defect. The purpose of this study was to clarify the influence of the thickness of the implanted DN gel on the induction ability of hyaline cartilage regeneration. METHODS Thirty-eight mature rabbits were used in this study. We created an osteochondral defect having a diameter of 4.3-mm in the patellofemoral joint. The knees were randomly divided into 4 groups (Group I: 0.5-mm thick gel, Group II: 1.0-mm thick gel, Group III: 5.0-mm thick gel, and Group IV: untreated control). Animals in each group were further divided into 3 sub-groups depending on the gel implant position (2.0-, 3.0-, or 4.0-mm depth from the articular surface) in the defect. The regenerated tissues were evaluated with the Wayne's gross and histological grading scales and real time PCR analysis of the cartilage marker genes at 4 weeks. RESULTS According to the total Wayne's score, when the depth of the final vacant space was set at 2.0 mm, the scores in Groups I, II, and III were significantly greater than that Group IV (p<0.05), although there were no significant differences between Groups I and IV at a 3.0-mm deep vacant space. The expression levels of type-2 collagen in Groups II and III were significantly higher (p<0.05) than that in Group IV. CONCLUSIONS The 1.0-mm thick DN gel sheet had the same ability to induce hyaline cartilage regeneration as the 5.0-mm thick DN gel plug. However, the induction ability of the 0.5-mm thick sheet was significantly lower when compared with the 1.0-mm thick gel sheet. The 1.0-mm DN gel sheet is a promising device to establish a cell-free cartilage regeneration strategy that minimizes bone loss from the gel implantation.
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Affiliation(s)
- Hidetoshi Matsuda
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
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Lewis G. Nucleus pulposus replacement and regeneration/repair technologies: present status and future prospects. J Biomed Mater Res B Appl Biomater 2012; 100:1702-20. [PMID: 22566484 DOI: 10.1002/jbm.b.32712] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 02/19/2012] [Accepted: 03/18/2012] [Indexed: 12/28/2022]
Abstract
Degenerative disc disease is implicated in the pathogenesis of many painful conditions of the back, chief among which is low back pain. Acute and/or chronic low back pain (A/CLBP) afflicts a large number of people, thus making it a major healthcare issue with concomitant cost ramifications. When conservative treatments for A/CLBP, such as bed rest, anti-inflammatory medications, and physical therapy, prove to be ineffectual, surgical options are recommended. The most popular of these is discectomy followed by fusion. Although there are many reports of good to excellent outcomes with this method, there are concerns, such as long-term adverse biomechanical consequences to adjacent functional spinal unit(s). A surgical option that has been attracting much attention recently is replacement or regeneration/repair of the nucleus pulposus, an approach that holds the prospect of not compromising either mobility or function and causing no adjacent-level injury. There is a sizeable body of literature highlighting this option, comprising in vitro biomechanical studies, finite element analyses, animal-model studies, and limited clinical evaluations. This work is a review of this body of literature and is organized into four parts, with the focus being on replacement technologies, regeneration/repair technologies, and detailed expositions on 14 areas for future study. This review ends with a summary of the salient points made.
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Affiliation(s)
- Gladius Lewis
- Department of Mechanical Engineering, The University of Memphis, Memphis, Tennessee 38152, USA.
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Kabiri K, Roshanfekr S. Converting water absorbent polymer to alcohol absorbent polymer. POLYM ADVAN TECHNOL 2012. [DOI: 10.1002/pat.3045] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- K. Kabiri
- Iran Polymer and Petrochemical Institute (IPPI); P.O. Box 14965-115 Tehran Iran
| | - S. Roshanfekr
- Iran Polymer and Petrochemical Institute (IPPI); P.O. Box 14965-115 Tehran Iran
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Poly(2-acrylamido-2-methylpropanesulfonic acid) gel induces articular cartilage regeneration in vivo: Comparisons of the induction ability between single- and double-network gels. J Biomed Mater Res A 2012; 100:2244-51. [DOI: 10.1002/jbm.a.34165] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 02/16/2012] [Accepted: 03/01/2012] [Indexed: 11/07/2022]
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Wang Y, Chen D. Preparation and characterization of a novel stimuli-responsive nanocomposite hydrogel with improved mechanical properties. J Colloid Interface Sci 2012; 372:245-51. [DOI: 10.1016/j.jcis.2012.01.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 01/17/2012] [Accepted: 01/20/2012] [Indexed: 12/14/2022]
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Arnold MP, Daniels AU, Ronken S, García HA, Friederich NF, Kurokawa T, Gong JP, Wirz D. Acrylamide Polymer Double-Network Hydrogels: Candidate Cartilage Repair Materials with Cartilage-Like Dynamic Stiffness and Attractive Surgery-Related Attachment Mechanics. Cartilage 2011; 2:374-83. [PMID: 26069595 PMCID: PMC4297135 DOI: 10.1177/1947603511402320] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND In focal repair of joint cartilage and meniscus, initial stiffness and strength of repairs are generally much less than surrounding tissue. This increases early failure potential. Secure primary fixation of the repair material is also a problem. Acrylamide polymer double-network (DN) hydrogels are candidate-improved repair materials. DN gels have exceptional strength and toughness compared to ordinary gels. This stems from the double-network structure in which there is a high molar ratio of the second network to the first network, with the first network highly crosslinked and the second loosely crosslinked. Previous studies of acrylic PAMPS/PDMAAm and PAMPS/PAAm DN gels demonstrated physicochemical stability and tissue compatibility as well as the ability to foster cartilage formation. METHODS Mechanical properties related to surgical use were tested in 2 types of DN gels. RESULTS Remarkably, these >90%-water DN gels exhibited dynamic impact stiffness (E*) values (~1.1 and ~1.5 MPa) approaching swine meniscus (~2.9 MPa). Dynamic impact energy-absorbing capability was much lower (median loss angles of ~2°) than swine meniscus (>10°), but it is intriguing that >90%-water materials can efficiently store energy. Also, fine 4/0 suture tear-out strength approached cartilage (~2.1 and ~7.1 N v. ~13.5 N). Initial strength of attachment of DN gels to cartilage with acrylic tissue adhesive was also high (~0.20 and ~0.15 N/mm(2)). CONCLUSIONS DN gel strength and toughness properties stem from optimized entanglement of the 2 network components. DN gels thus have obvious structural parallels with cartilaginous tissues, and their surgical handling properties make them ideal candidates for clinical use.
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Affiliation(s)
- Markus P. Arnold
- Department of Orthopedic Surgery and Skeletal Traumatology, Kantonsspital Bruderholz, Bruderholz, Switzerland,Markus P. Arnold, Department of Orthopedic Surgery and Skeletal Traumatology, Kantonsspital Bruderholz, CH-4101 Bruderholz, Switzerland
| | - Alma U. Daniels
- Laboratory of Biomechanics and Biocalorimetry, Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Sarah Ronken
- Laboratory of Biomechanics and Biocalorimetry, Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Helena Ardura García
- Biomedical Engineering Section, Department of Engineering, Universidad Iberoamericana, Mexico City, Mexico
| | - Niklaus F. Friederich
- Department of Orthopedic Surgery and Skeletal Traumatology, Kantonsspital Bruderholz, Bruderholz, Switzerland
| | - Takayuki Kurokawa
- Department of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan,Creative Research Institution “Sousei”, Hokkaido University, Sapporo, Japan
| | - Jian P. Gong
- Department of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan
| | - Dieter Wirz
- Department of Orthopedic Surgery and Skeletal Traumatology, Kantonsspital Bruderholz, Bruderholz, Switzerland,Laboratory of Biomechanics and Biocalorimetry, Faculty of Medicine, University of Basel, Basel, Switzerland
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Imabuchi R, Ohmiya Y, Kwon HJ, Onodera S, Kitamura N, Kurokawa T, Gong JP, Yasuda K. Gene expression profile of the cartilage tissue spontaneously regenerated in vivo by using a novel double-network gel: comparisons with the normal articular cartilage. BMC Musculoskelet Disord 2011; 12:213. [PMID: 21955995 PMCID: PMC3192715 DOI: 10.1186/1471-2474-12-213] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2011] [Accepted: 09/29/2011] [Indexed: 11/10/2022] Open
Abstract
Background We have recently found a phenomenon that spontaneous regeneration of a hyaline cartilage-like tissue can be induced in a large osteochondral defect by implanting a double-network (DN) hydrogel plug, which was composed of poly-(2-Acrylamido-2-methylpropanesulfonic acid) and poly-(N, N'-Dimetyl acrylamide), at the bottom of the defect. The purpose of this study was to clarify gene expression profile of the regenerated tissue in comparison with that of the normal articular cartilage. Methods We created a cylindrical osteochondral defect in the rabbit femoral grooves. Then, we implanted the DN gel plug at the bottom of the defect. At 2 and 4 weeks after surgery, the regenerated tissue was analyzed using DNA microarray and immunohistochemical examinations. Results The gene expression profiles of the regenerated tissues were macroscopically similar to the normal cartilage, but showed some minor differences. The expression degree of COL2A1, COL1A2, COL10A1, DCN, FMOD, SPARC, FLOD2, CHAD, CTGF, and COMP genes was greater in the regenerated tissue than in the normal cartilage. The top 30 genes that expressed 5 times or more in the regenerated tissue as compared with the normal cartilage included type-2 collagen, type-10 collagen, FN, vimentin, COMP, EF1alpha, TFCP2, and GAPDH genes. Conclusions The tissue regenerated by using the DN gel was genetically similar but not completely identical to articular cartilage. The genetic data shown in this study are useful for future studies to identify specific genes involved in spontaneous cartilage regeneration.
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Affiliation(s)
- Ryusei Imabuchi
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Nakajima T, Furukawa H, Tanaka Y, Kurokawa T, Gong JP. Effect of void structure on the toughness of double network hydrogels. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/polb.22293] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kitamura N, Yasuda K, Ogawa M, Arakaki K, Kai S, Onodera S, Kurokawa T, Gong JP. Induction of spontaneous hyaline cartilage regeneration using a double-network gel: efficacy of a novel therapeutic strategy for an articular cartilage defect. Am J Sports Med 2011; 39:1160-9. [PMID: 21460067 DOI: 10.1177/0363546511399383] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND A double-network (DN) gel, which was composed of poly-(2-acrylamido-2-methylpropanesulfonic acid) and poly-(N,N'-dimetyl acrylamide) (PAMPS/PDMAAm), has the potential to induce chondrogenesis both in vitro and in vivo. PURPOSE To establish the efficacy of a therapeutic strategy for an articular cartilage defect using a DN gel. STUDY DESIGN Controlled laboratory study. METHODS A 4.3-mm-diameter osteochondral defect was created in rabbit trochlea. A DN gel plug was implanted into the defect of the right knee so that a defect 2 mm in depth remained after surgery. An untreated defect of the left knee provided control data. The osteochondral defects created were examined by histological and immunohistochemical evaluations, surface assessment using confocal laser scanning microscopy, and real-time polymerase chain reaction (PCR) analysis at 4 and 12 weeks. Samples were quantitatively evaluated with 2 scoring systems reported by Wayne et al and O'Driscoll et al. RESULTS The DN gel-implanted defect was filled with a sufficient volume of the hyaline cartilage tissue rich in proteoglycan and type 2 collagen. Quantitative evaluation using the grading scales revealed a significantly higher score in the DN gel-implanted defects compared with the untreated control at each period (P < .0001). The mean relative values of type 2 collagen mRNAs in the regenerated tissue were obviously higher in the DN gel-implanted defect than in the untreated control at each period. The mean surface roughness of the untreated control was significantly higher than the normal cartilage at 12 weeks (P = .0106), while there was no statistical difference between the DN gel-implanted and normal knees. CONCLUSION This study using the mature rabbit femoral trochlea osteochondral defect model demonstrated that DN gel implantation is an effective treatment to induce cartilage regeneration in vivo without any cultured cells or mammalian-derived scaffolds. CLINICAL RELEVANCE This study has prompted us to develop a potential innovative strategy to repair cartilage lesions in the field of joint surgery.
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Affiliation(s)
- Nobuto Kitamura
- Department of Sports Medicine and Joint Surgery, Hokkaido University, Kita-ku, Sapporo, 060-8638, Japan.
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Wang HW, Zhao TB, Lu GZ, Zhang S, Miao C, Weia XF, Li FY. Novel Micro/nanostructures from a Double Network Gel. J CHIN CHEM SOC-TAIP 2011. [DOI: 10.1002/jccs.201190025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhang H, Qadeer A, Chen W. In situ gelable interpenetrating double network hydrogel formulated from binary components: thiolated chitosan and oxidized dextran. Biomacromolecules 2011; 12:1428-37. [PMID: 21410248 DOI: 10.1021/bm101192b] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In situ gelable interpenetrating double-network hydrogels composed of thiolated chitosan (Chitosan-NAC) and oxidized dextran (Odex), completely devoid of potentially cytotoxic small molecule cross-linkers and that do not require complex maneuvers or catalysis, have been formulated. The interpenetrating network structure is created by Schiff base formations and disulfide bond inter-cross-linkings through exploiting the disparity of their reaction times. Compared with the autogelable thiolated chitosan hydrogels that typically require a relatively long time span for gelation to occur, the Odex/Chitosan-NAC composition solidifies rapidly and forms a well-developed 3D network in a short time span. Compared with typical hydrogels derived from natural materials, the Odex/Chitosan-NAC hydrogels are mechanically strong and resist degradation. The cytotoxicity potential of the hydrogels was determined by an in vitro viability assay using fibroblast as a model cell, and the results reveal that the hydrogels are noncytotoxic. In parallel, in vivo results from subdermal implantation in mice models demonstrate that this hydrogel is not only highly resistant to degradation but also induces very mild tissue response.
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Affiliation(s)
- Hanwei Zhang
- Division of Wound Healing and Regenerative Medicine, Department of Surgery, New York University School of Medicine, New York, New York 10016, USA
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Yokota M, Yasuda K, Kitamura N, Arakaki K, Onodera S, Kurokawa T, Gong JP. Spontaneous hyaline cartilage regeneration can be induced in an osteochondral defect created in the femoral condyle using a novel double-network hydrogel. BMC Musculoskelet Disord 2011; 12:49. [PMID: 21338528 PMCID: PMC3050780 DOI: 10.1186/1471-2474-12-49] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2010] [Accepted: 02/22/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Functional repair of articular osteochondral defects remains a major challenge not only in the field of knee surgery but also in tissue regeneration medicine. The purpose is to clarify whether the spontaneous hyaline cartilage regeneration can be induced in a large osteochondral defect created in the femoral condyle by means of implanting a novel double-network (DN) gel at the bottom of the defect. METHODS Twenty-five mature rabbits were used in this study. In the bilateral knees of each animal, we created an osteochondral defect having a diameter of 2.4-mm in the medial condyle. Then, in 21 rabbits, we implanted a DN gel plug into a right knee defect so that a vacant space of 1.5-mm depth (in Group I), 2.5-mm depth (in Group II), or 3.5-mm depth (in Group III) was left. In the left knee, we did not apply any treatment to the defect to obtain the control data. All the rabbits were sacrificed at 4 weeks, and the gross and histological evaluations were performed. The remaining 4 rabbits underwent the same treatment as used in Group II, and real-time PCR analysis was performed at 4 weeks. RESULTS The defect in Group II was filled with a sufficient volume of the hyaline cartilage tissue rich in proteoglycan and type-2 collagen. The Wayne's gross appearance and histology scores showed that Group II was significantly greater than Group I, III, and Control (p < 0.012). The relative expression level of type-2 collagen, aggrecan, and SOX9 mRNAs was significantly greater in Group II than in the control group (p < 0.023). CONCLUSIONS This study demonstrated that spontaneous hyaline cartilage regeneration can be induced in vivo in an osteochondral defect created in the femoral condyle by means of implanting the DN gel plug at the bottom of the defect so that an approximately 2-mm deep vacant space was intentionally left in the defect. This fact has prompted us to propose an innovative strategy without cell culture to repair osteochondral lesions in the femoral condyle.
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Affiliation(s)
- Masashi Yokota
- Department of Sports Medicine and Joint Surgery, Hokkaido University School of Medicine, Sapporo, Japan
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Arakaki K, Kitamura N, Kurokawa T, Onodera S, Kanaya F, Gong JP, Yasuda K. Joint immobilization inhibits spontaneous hyaline cartilage regeneration induced by a novel double-network gel implantation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:417-425. [PMID: 21181239 DOI: 10.1007/s10856-010-4216-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Accepted: 12/09/2010] [Indexed: 05/30/2023]
Abstract
We have recently discovered that spontaneous hyaline cartilage regeneration can be induced in an osteochondral defect in the rabbit, when we implant a novel double-network (DN) gel plug at the bottom of the defect. To clarify whether joint immobilization inhibits the spontaneous hyaline cartilage regeneration, we conducted this study with 20 rabbits. At 4 or 12 weeks after surgery, the defect in the mobile knees was filled with a sufficient volume of the hyaline cartilage tissue rich in proteoglycan and type-2 collagen, while no cartilage tissues were observed in the defect in the immobilized knees. Type-2 collagen, Aggrecan, and SOX9 mRNAs were expressed only in the mobile knees at each period. This study demonstrated that joint immobilization significantly inhibits the spontaneous hyaline cartilage regeneration induced by the DN gel implantation. This fact suggested that the mechanical environment is one of the significant factors to induce this phenomenon.
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Affiliation(s)
- Kazunobu Arakaki
- Department of Sports Medicine and Joint Reconstruction Surgery, Hokkaido University School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo, Japan
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Zhang H, Qadeer A, Mynarcik D, Chen W. Delivery of rosiglitazone from an injectable triple interpenetrating network hydrogel composed of naturally derived materials. Biomaterials 2010; 32:890-8. [PMID: 20947157 DOI: 10.1016/j.biomaterials.2010.09.053] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 09/23/2010] [Indexed: 11/19/2022]
Abstract
An in situ gelable and biodegradable triple-interpenetrating network (3XN) hydrogel, completely devoid of potentially cytotoxic extraneous small molecule crosslinkers, is formulated from partially oxidized dextran (Odex), teleostean and N-carboxyethyl chitosan (CEC). Both the rheological profile and mechanical strength of the 3XN hydrogel approximate the combined characteristics of the three individual hydrogels composed of the binary partial formulations (i.e., Odex/CEC, Odex/teleostean, and CEC/teleostean). The 3XN hydrogel is considerably more resistant to fibroblast-mediated degradation compared to each partial formulation in cell culture models; this is attributable to the interpenetrating triple-network structure. The presence of teleostean in the 3XN hydrogel imparts cell affinity, constituting an environment amenable to fibroblast growth. in vivo subdermal injection into mouse model shows that the 3XN hydrogel does not induce extensive inflammatory response nor is there any evidence of tissue necrosis, further confirming the non-cytotoxicity of the hydrogel and its degradation byproducts. Importantly, the capability of the 3XN hydrogel to serve as a sustained drug delivery vehicle is confirmed using rosiglitazone as a model drug. The presence of rosiglitazone profoundly changes the cell/tissue interactions with the subdermally injected 3XN hydrogel. Rosiglitazone suppresses both the inflammatory response and tissue repair in a dose-dependent manner and considerably moderated the hydrogel degradation.
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Affiliation(s)
- Hanwei Zhang
- Division of Wound Healing and Regenerative Medicine, Department of Surgery, New York University School of Medicine, New York, NY 10016, USA
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Arakaki K, Kitamura N, Fujiki H, Kurokawa T, Iwamoto M, Ueno M, Kanaya F, Osada Y, Gong JP, Yasuda K. Artificial cartilage made from a novel double-network hydrogel: In vivo effects on the normal cartilage and ex vivo evaluation of the friction property. J Biomed Mater Res A 2010; 93:1160-8. [PMID: 19768793 DOI: 10.1002/jbm.a.32613] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This study evaluated the in vivo influence of a poly-(2-Acrylamido-2-methylpropane sulfonic acid)/poly-(N,N'-dimetyl acrylamide) (PAMPS/PDMAAm) double-network (DN) hydrogel on counterface cartilage in rabbit knee joints and its ex vivo friction properties on normal cartilage. In the first experiment, the DN gel was implanted in a surgically created defect in the femoral trochlea of rabbit knee joints and the left knee was used as the control. Evaluations using a confocal laser scanning microscopy demonstrated that the DN gel did not affect the surface microstructure (surface roughness, the number of small pits) of the counterface cartilage in vivo at 4 and 12 weeks. The histology also showed that the DN gel hadno pathological damage on the cartilage matrices and cells at 4 weeks. However, two of the five DN gel-implanted knees showed mild irregularity on the counterface cartilage surface at 12 weeks. In the second experiment, the friction property between the normal and the artificial cartilage was determined using a joint simulator apparatus. The ex vivo mean friction coefficient of the DN gel to normal cartilage was 0.029, while that of the normal-to-normal cartilage articulation was 0.188. The coefficient of the DN gel-to-normal cartilage articulation was significantly lower than that of the normal-to-normal cartilage articulation (p < 0.0001). This study suggested that the PAMPS/PDMAAm DN gel has very low friction coefficient on normal cartilage and has no significant detrimental effects on counterface cartilage in vivo, and can be a promising material to develop the artificial cartilage.
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Affiliation(s)
- Kazunobu Arakaki
- Department of Sports Medicine and Joint Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Kwon HJ, Yasuda K, Ohmiya Y, Honma KI, Chen YM, Gong JP. In vitro differentiation of chondrogenic ATDC5 cells is enhanced by culturing on synthetic hydrogels with various charge densities. Acta Biomater 2010; 6:494-501. [PMID: 19651251 DOI: 10.1016/j.actbio.2009.07.033] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2009] [Revised: 06/30/2009] [Accepted: 07/29/2009] [Indexed: 11/28/2022]
Abstract
We investigated the behavior of chondrogenic ATDC5 cells on synthetic polymer gels with various charge densities: negatively charged poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS) gel, neutral poly(dimethylacrylamide) (PDMAAm) gel, and copolymer gels of 2-acrylamido-2-methyl-1-propanesulfonic acid and dimethylacrylamide P(AMPS-co-DMAAm) with different compositions (molar fractions of AMPS, F=0.25, 0.5, 0.75). In insulin-free maintenance medium, the ATDC5 cells cultured on the highly negatively charged gels - PAMPS gel and the P(AMPS-co-DMAAm) copolymer gels (F=0.75) - spread and became confluent at day 7, and interestingly formed nodules at day 14, expressing type II collagen and proteoglycan. This result demonstrates that the highly negatively charged gels can induce chondrogenic differentiation of ATDC5 cells even in insulin-free maintenance medium, in which the ATDC5 cells cultured on the standard polystyrene dish cannot differentiate into chondrocytes. In insulin-supplemented differentiation medium, ATDC5 cells cultured on the PDMAAm gel made focal adhesions, rapidly aggregated and formed large nodules within 7 days, expressing significantly greater levels of type II collagen and proteoglycan than cells cultured on the polystyrene dish and the negatively charged gels. These results showed that the neutral gel accelerated chondrogenic differentiation of ATDC5 cells cultured in the differentiation medium. We suggest that the highly negatively charged PAMPS gel and the neutral PDMAAm gel are interesting biomaterials for cartilage tissue engineering as a scaffold with the potential to induce chondrogenic differentiation.
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Affiliation(s)
- Hyuck Joon Kwon
- Regenerative Medicine/Tissue Engineering Division, Research Center for Cooperative Projects, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Sugiura H, Yunoki S, Kondo E, Ikoma T, Tanaka J, Yasuda K. In vivo biological responses and bioresorption of tilapia scale collagen as a potential biomaterial. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2009; 20:1353-68. [PMID: 19622276 DOI: 10.1163/092050609x12457418396658] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
To date, collagen for biomedical uses has been obtained from mammalian sources. The purpose of this study was to evaluate the in vivo biological responses and bioresorption of collagen obtained from tilapia (Oreochromis niloticas) scales as compared to those of collagen from porcine dermis. Collagen sponges with micro-porous structures were fabricated from reconstituted collagen fibrils using freeze-drying and cross-linked by dehydrothermal treatment (DHT treatment) or additional treatment with a water-soluble carbodiimide (WSC treatment). The mechanical properties of the tilapia collagen sponges were similar to those of porcine collagen sponges with the same cross-linking methods, where WSC treatment remarkably improved the properties over DHT treatment alone. The pellet implantation tests into the paravertebral muscle of rabbits demonstrated that tilapia collagen caused rare inflammatory responses at 1- and 4-week implantations, statistically similar to those of porcine collagen and a high-density polyethylene as a negative control. The bioresorption rates of both the collagen implants were similar, except for the DHT-treated tilapia collagen sponges at 1-week implantation. These results suggest that tilapia collagen is a potential alternative to conventional mammalian collagens in biomedical uses.
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Affiliation(s)
- Hiroaki Sugiura
- Department of Sports Medicine and Joint Reconstruction Surgery, Hokkaido University, Kita-15 Nishi-7, Sapporo, Hokkaido 060-8638, Japan
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Shen X, Tanaka K, Takamori A. Coronary Arteries Angiogenesis in Ischemic Myocardium: Biocompatibility and Biodegradability of Various Hydrogels. Artif Organs 2009; 33:781-7. [DOI: 10.1111/j.1525-1594.2009.00815.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yasuda K, Kitamura N, Gong JP, Arakaki K, Kwon HJ, Onodera S, Chen YM, Kurokawa T, Kanaya F, Ohmiya Y, Osada Y. A Novel Double-Network Hydrogel Induces Spontaneous Articular Cartilage Regeneration in vivo
in a Large Osteochondral Defect. Macromol Biosci 2008; 9:307-16. [DOI: 10.1002/mabi.200800223] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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NAKAJIMA T, TANAKA Y, FURUKAWA H, KUROKAWA T, GONG JP. Creation of Double Network Hydrogels with Extremely High Strength and Its Anomalous Fracture Mechanism. KOBUNSHI RONBUNSHU 2008. [DOI: 10.1295/koron.65.707] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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