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Utagawa Y, Ino K, Takinoue M, Shiku H. Fabrication and Cell Culture Applications of Core-Shell Hydrogel Fibers Composed of Chitosan/DNA Interfacial Polyelectrolyte Complexation and Calcium Alginate: Straight and Beaded Core Variations. Adv Healthc Mater 2023; 12:e2302011. [PMID: 37478383 DOI: 10.1002/adhm.202302011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Indexed: 07/23/2023]
Abstract
Core-shell hydrogel fibers are widely used in cell culture applications. A simple and rapid method is presented for fabricating core-shell hydrogel fibers, consisting of straight or beaded core fibers, for cell culture applications. The core fibers are prepared using interfacial polyelectrolyte complexation (IPC) with chitosan and DNA. Briefly, two droplets of chitosan and DNA are brought in contact to form an IPC film, which is dragged to prepare an IPC fiber. The incubation time and DNA concentration are adjusted to prepare straight and beaded IPC fibers. The fibers with Ca2+ are immersed in an alginate solution to form calcium alginate shell hydrogels around the core IPC fibers. To the best of the knowledge, this is the first report of core-shell hydrogel fibers with IPC fiber cores. To demonstrate cell culture, straight hydrogel fibers are applied to fabricate hepatic models consisting of HepG2 and 3T3 fibroblasts, and vascular models consisting of human umbilical vein endothelial cells and 3T3 fibroblasts. To evaluate the effect of co-culture, albumin secretion, and angiogenesis are evaluated. Beaded hydrogel fibers are used to fabricate many size-controlled spheroids for fiber and cloning applications. This method can be widely applied in tissue engineering and cell analysis.
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Affiliation(s)
- Yoshinobu Utagawa
- Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| | - Kosuke Ino
- Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| | - Masahiro Takinoue
- Department of Computer Science, Tokyo Institute of Technology, Yokohama, 226-8502, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
- Graduate School of Environmental Studies, Tohoku University, Sendai, 980-8579, Japan
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2
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Abolhassani S, Hossein-Aghdaei M, Geramizadeh B, Azarpira N, Koohpeyma F, Gholami M, Alizadeh A. Primary hepatocyte urea assessment in the sodium-alginate patterned hydrogel by electrochemical procedure containing umbilical cord conditioned media. J Biomater Appl 2023; 37:1470-1485. [PMID: 36318091 DOI: 10.1177/08853282221137093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Limitations in liver transplantation and advances in cell therapy methods motivated us to study primary hepatocytes. The main challenge in using primary hepatocytes for liver regeneration is that they lose their functionalities. We aimed to develop a controlled-shape hydrogel and apply the conditioned-media of mesenchymal stromal cells (CM-MSCs) to improve in vitro hepatocyte functions. In this experimental study, following rat hepatocyte isolation by collagenase perfusion and collection of human umbilical cord CM-MSCs, a simple and precise system called electrodeposition was used to produce the patterned alginate hydrogel. To reduce the cytopathic effects, we used an indirect electrodeposition method. For characterizing this structure, mechanical properties, Fourier-transform infrared spectroscopy (FTIR), water uptake, in-vitro degradation, and hydrogel stability were studied. Urea synthesis as a basic function of hepatocytes was assessed in five different groups. Scanning electron microscope (SEM) was utilized to evaluate the primary hepatocyte morphology and their dispersion in the fabricated structure. We observed a significant increase in urea synthesis in the presence of CM-MSCs in patterned hydrogel alginate compared to 2D culture on day 3 (p<0.05). However, there was no significant difference in simple and patterned hydrogel on day 2. We found that the electrodeposition method is appropriate for the rapid fabricating of hydrogel structures with arbitrary patterns for 3D cell culture.
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Affiliation(s)
- Sareh Abolhassani
- School of Advanced Medical Sciences and Technologies, 48435Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Bita Geramizadeh
- Transplant Research Center, 226722Shiraz University of Medical Sciences, Shiraz, Iran
| | - Negar Azarpira
- Transplant Research Center, 226722Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farhad Koohpeyma
- Endocrine and metabolism Research Center, 48435Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahnaz Gholami
- Transplant Research Center, 226722Shiraz University of Medical Sciences, Shiraz, Iran
| | - Aliakbar Alizadeh
- School of Advanced Medical Sciences and Technologies, 48435Shiraz University of Medical Sciences, Shiraz, Iran
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Utagawa Y, Ino K, Kumagai T, Hiramoto K, Takinoue M, Nashimoto Y, Shiku H. Electrochemical Glue for Binding Chitosan–Alginate Hydrogel Fibers for Cell Culture. MICROMACHINES 2022; 13:mi13030420. [PMID: 35334714 PMCID: PMC8952256 DOI: 10.3390/mi13030420] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 11/16/2022]
Abstract
Three-dimensional organs and tissues can be constructed using hydrogels as support matrices for cells. For the assembly of these gels, chemical and physical reactions that induce gluing should be induced locally in target areas without causing cell damage. Herein, we present a novel electrochemical strategy for gluing hydrogel fibers. In this strategy, a microelectrode electrochemically generated HClO or Ca2+, and these chemicals were used to crosslink chitosan–alginate fibers fabricated using interfacial polyelectrolyte complexation. Further, human umbilical vein endothelial cells were incorporated into the fibers, and two such fibers were glued together to construct “+”-shaped hydrogels. After gluing, the hydrogels were embedded in Matrigel and cultured for several days. The cells spread and proliferated along the fibers, indicating that the electrochemical glue was not toxic toward the cells. This is the first report on the use of electrochemical glue for the assembly of hydrogel pieces containing cells. Based on our results, the electrochemical gluing method has promising applications in tissue engineering and the development of organs on a chip.
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Affiliation(s)
- Yoshinobu Utagawa
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan; (Y.U.); (T.K.); (K.H.)
| | - Kosuke Ino
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;
- Correspondence: (K.I.); (H.S.)
| | - Tatsuki Kumagai
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan; (Y.U.); (T.K.); (K.H.)
| | - Kaoru Hiramoto
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan; (Y.U.); (T.K.); (K.H.)
| | - Masahiro Takinoue
- Department of Computer Science, Tokyo Institute of Technology, Yokohama 226-8502, Japan;
| | - Yuji Nashimoto
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;
- Correspondence: (K.I.); (H.S.)
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Wang Y, Li A, Ren B, Han Z, Lin J, Zhang Q, Cao T, Cui C. Mechanistic insights into soil heavy metals desorption by biodegradable polyelectrolyte under electric field. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118277. [PMID: 34610413 DOI: 10.1016/j.envpol.2021.118277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
In this study, we firstly used alginate to enhance an electrokinetic technology to remediate soil contaminated with divalent heavy metals (Pb2+, Cu2+, Zn2+). The mechanisms of alginate-associated migration of metal ions in electric field were confirmed. Alginate resulted in a high electrical current during electrokinetic process, and soil conductivity also increased after remediation. Obvious changes in both electroosmotic flow and soil pH were observed. Moreover, these factors were affected by increasing alginate dosage. The highest Cu (95.82%) and Zn (97.33%) removal efficiencies were obtained by introducing 1 wt% alginate. Alginate can desorb Cu2+ and Zn2+ ions from soil by forming unstable gels, which could be dissociated through electrolysis. However, Pb2+ ions did not easily migrate out of the contaminated soil. The density functional theory (DFT) calculations show Pb2+ ions could form a more stable coordination sphere in metal complexes than Cu2+ and Zn2+ ions. The metal removal efficiency was decreased by increasing alginate dosage at a high level. More alginate could provide more carboxyl ligands for divalent metal ions to stabilize gels, which were difficult to dissociate by electrolysis. In summary, the results indicate it is potential for introducing alginate into an electrokinetic system to remediate Cu- and Zn- contaminated soil.
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Affiliation(s)
- Yuchen Wang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Ang Li
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Binqiao Ren
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Zijian Han
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Junhao Lin
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Qiwei Zhang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Tingting Cao
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Chongwei Cui
- School of Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People's Republic of China.
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Utagawa Y, Hiramoto K, Nashimoto Y, Ino K, Shiku H. In vitro electrochemical assays for vascular cells and organs. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Yoshinobu Utagawa
- Graduate School of Environmental Studies Tohoku University Aoba‐ku Sendai Japan
| | - Kaoru Hiramoto
- Graduate School of Environmental Studies Tohoku University Aoba‐ku Sendai Japan
| | - Yuji Nashimoto
- Frontier Research Institute for Interdisciplinary Sciences Tohoku University Aoba‐ku Sendai Japan
- Graduate School of Engineering Tohoku University Aoba‐ku Sendai Japan
| | - Kosuke Ino
- Graduate School of Engineering Tohoku University Aoba‐ku Sendai Japan
| | - Hitoshi Shiku
- Graduate School of Engineering Tohoku University Aoba‐ku Sendai Japan
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Liang Q, Hou Y, Meng F, Wang H. Optimization of the Fluidic-Based Assembly for Three-Dimensional Construction of Multicellular Hydrogel Micro-Architecture in Mimicking Hepatic Lobule-like Tissues. MICROMACHINES 2021; 12:1129. [PMID: 34577773 PMCID: PMC8471618 DOI: 10.3390/mi12091129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/10/2021] [Accepted: 09/16/2021] [Indexed: 11/17/2022]
Abstract
Three-dimensional (3D) assembly of microstructures encapsulating co-cultured multiple cells can highly recapitulate the in vivo tissues, which has a great prospect in tissue engineering and regenerative medicine. In order to fully mimic the in vivo architecture, the hydrogel microstructure needs to be designed into a special shape and spatially organized without damage, which is very challenging because of its limited mechanical properties. Here, we propose a 3D assembly method for the construction of liver lobule-like microstructures (a mimetic gear-like microstructure of liver lobule) through the local fluidic interaction. Although the method has been proven and is known as the consensual means for constructing 3D cellular models, it is still challenging to improve the assembly efficiency and the assembly success rate by adjusting the fluidic force of non-contact lifting and stacking. To improve the assembly efficiency and the assembly success rate, a fluidic simulation model is proposed based on the mechanism of the interaction between the microstructures and the fluid. By computing the simulation model, we found three main parameters that affect the assembly process; they are the velocity of the microflow, the tilt angle of the manipulator and the spacing between the microstructures and the manipulator. Compared with our previous work, the assembly efficiency was significantly improved 63.8% by using the optimized parameters of the model for assembly process, and the assembly success rate was improved from 98% to 99.5%. With the assistance of the assembly simulation, the luminal 3D micromodels of liver tissue show suitable bioactivity and biocompatibility after long-term hepatocytes culture. We anticipate that our method will be capable of improving the efficiency of the microstructures assembly to regenerate more complex multicellular constructs with unprecedented possibilities for future tissue engineering applications.
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Affiliation(s)
- Qian Liang
- Intelligent Robotics Institute, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China; (Q.L.); (Y.H.)
| | - Yaozhen Hou
- Intelligent Robotics Institute, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China; (Q.L.); (Y.H.)
| | - Fei Meng
- Intelligent Robotics Institute, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China; (Q.L.); (Y.H.)
| | - Huaping Wang
- Beijing Advanced Innovation Center for Intelligent Robots and Systems, Beijing Institute of Technology, Beijing 100081, China;
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Karoyo AH, Wilson LD. A Review on the Design and Hydration Properties of Natural Polymer-Based Hydrogels. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1095. [PMID: 33652859 PMCID: PMC7956345 DOI: 10.3390/ma14051095] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/07/2021] [Accepted: 02/17/2021] [Indexed: 01/02/2023]
Abstract
Hydrogels are hydrophilic 3D networks that are able to ingest large amounts of water or biological fluids, and are potential candidates for biosensors, drug delivery vectors, energy harvester devices, and carriers or matrices for cells in tissue engineering. Natural polymers, e.g., cellulose, chitosan and starch, have excellent properties that afford fabrication of advanced hydrogel materials for biomedical applications: biodegradability, biocompatibility, non-toxicity, hydrophilicity, thermal and chemical stability, and the high capacity for swelling induced by facile synthetic modification, among other physicochemical properties. Hydrogels require variable time to reach an equilibrium swelling due to the variable diffusion rates of water sorption, capillary action, and other modalities. In this study, the nature, transport kinetics, and the role of water in the formation and structural stability of various types of hydrogels comprised of natural polymers are reviewed. Since water is an integral part of hydrogels that constitute a substantive portion of its composition, there is a need to obtain an improved understanding of the role of hydration in the structure, degree of swelling and the mechanical stability of such biomaterial hydrogels. The capacity of the polymer chains to swell in an aqueous solvent can be expressed by the rubber elasticity theory and other thermodynamic contributions; whereas the rate of water diffusion can be driven either by concentration gradient or chemical potential. An overview of fabrication strategies for various types of hydrogels is presented as well as their responsiveness to external stimuli, along with their potential utility in diverse and novel applications. This review aims to shed light on the role of hydration to the structure and function of hydrogels. In turn, this review will further contribute to the development of advanced materials, such as "injectable hydrogels" and super-adsorbents for applications in the field of environmental science and biomedicine.
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Affiliation(s)
| | - Lee D. Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada;
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Ino K, Tamura A, Hiramoto K, Fukuda MT, Nashimoto Y, Shiku H. Electrodeposition of Thiolated Polymer-based Hydrogels via Disulfide Formation Using Electrogenerated Benzoquinone. CHEM LETT 2021. [DOI: 10.1246/cl.200732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Kosuke Ino
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Ayako Tamura
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Kaoru Hiramoto
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Mika T. Fukuda
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Yuji Nashimoto
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
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Yan K, Yang C, Zhong W, Lu Z, Li X, Shi X, Wang D. Wire templated electrodeposition of vessel-like structured chitosan hydrogel by using a pulsed electrical signal. SOFT MATTER 2020; 16:9471-9478. [PMID: 32955063 DOI: 10.1039/d0sm01134g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Herein, by performing a templated electrodeposition process with an oscillating electrical signal stimulation, a vessel-like structured chitosan hydrogel (diameter about 0.4 mm) was successfully prepared in the absence of salt conditions. Experimental results demonstrated that the hydrogel growth (e.g. the thickness) is linearly correlated with the imposed charge transfer and can be well quantified by using a theoretical moving front model. Morphological observations indicated that the heterogeneous multilayer structure was spatially and temporally controlled by an externally employed electrical signal sequence while the channel structure could be determined by the shaped electrode. Moreover, the oscillating ON-OFF cycles were proved to strongly affect the film structure, leading to a more compact hydrogel coating with a lower water content, higher crystallinity, complex layer architecture and relatively strong mechanical properties that could be easily peeled off as a free-standing hollow tube. Importantly, all the experiments were conducted under mild conditions that allowed additional enhancing materials to be added in to further improve the mechanical and/or biological properties. Thus, this work advances a very promising self-assembly technology for the construction of a multi-functional hydrogel coating and artificial blood vessel regeneration.
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Affiliation(s)
- Kun Yan
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China. and School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
| | - Chenguang Yang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China.
| | - Weibin Zhong
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China.
| | - Zhentan Lu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China.
| | - Xiufang Li
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China.
| | - Xiaowen Shi
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
| | - Dong Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China.
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Ino K, Fukuda MT, Hiramoto K, Taira N, Nashimoto Y, Shiku H. Fabrication of three-dimensional calcium alginate hydrogels using sacrificial templates of sugar. J Biosci Bioeng 2020; 130:539-544. [PMID: 32758401 DOI: 10.1016/j.jbiosc.2020.06.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/24/2020] [Accepted: 06/30/2020] [Indexed: 12/19/2022]
Abstract
Hydrogels are receiving increasing attention in bioapplications. Among hydrogels, calcium alginate (Ca-alginate) hydrogels are widely used for their biocompatibility, low toxicity, low cost, and rapid fabrication by simple mixing of Ca2+ and sodium alginate (Na-alginate). For bioapplications using hydrogels, it is necessary to construct designed hydrogel structures. Although several methods have been proposed for fabricating designed hydrogels, a simple and low-cost method is desirable. Therefore, we developed a new method using sacrificial templates of sugar structures to fabricate three-dimensional (3D) designed Ca-alginate hydrogels. In this method, Na-alginate solution is mixed with molten sugar, and the resulting highly viscous material used to mold 3D sugar structures as sacrificial templates. Since sugar constructs are easily handled compared to hydrogels, sugar templates are useful for preparing 3D constructs. Finally, the sugar and Na-alginate structure is immersed in a CaCl2 solution to simultaneously dissolve the template and form the Ca-alginate hydrogel. The resulting hydrogel takes the shape of the sugar template. By stacking and fusing various sugar structures, such as fibers and blocks, 3D designed Ca-alginate hydrogels can be successfully fabricated. This simple and low-cost method shows excellent potential for application to a variety of bioapplications.
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Affiliation(s)
- Kosuke Ino
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan.
| | - Mika T Fukuda
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Kaoru Hiramoto
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Noriko Taira
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Yuji Nashimoto
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan; Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
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11
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Li L, Qin S, Peng J, Chen A, Nie Y, Liu T, Song K. Engineering gelatin-based alginate/carbon nanotubes blend bioink for direct 3D printing of vessel constructs. Int J Biol Macromol 2020; 145:262-271. [DOI: 10.1016/j.ijbiomac.2019.12.174] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/03/2019] [Accepted: 12/19/2019] [Indexed: 12/18/2022]
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Ino K, Ozawa F, Dang N, Hiramoto K, Hino S, Akasaka R, Nashimoto Y, Shiku H. Biofabrication Using Electrochemical Devices and Systems. ACTA ACUST UNITED AC 2020; 4:e1900234. [DOI: 10.1002/adbi.201900234] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/01/2019] [Indexed: 02/07/2023]
Affiliation(s)
- Kosuke Ino
- Graduate School of Engineering Tohoku University 6‐6‐11 Aramaki‐aza Aoba Aoba‐ku Sendai 980–8579 Japan
| | - Fumisato Ozawa
- Institute of Industrial Science The University of Tokyo 4‐6‐1 Komaba Meguro‐ku Tokyo 153–8505 Japan
| | - Ning Dang
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement CNRS‐Université de Lorraine Villers‐lès‐Nancy 54600 France
| | - Kaoru Hiramoto
- Graduate School of Environmental Studies Tohoku University 6‐6‐11 Aramaki‐aza Aoba Aoba‐ku Sendai 980–8579 Japan
| | - Shodai Hino
- Graduate School of Environmental Studies Tohoku University 6‐6‐11 Aramaki‐aza Aoba Aoba‐ku Sendai 980–8579 Japan
| | - Rise Akasaka
- School of Engineering Tohoku University 6‐6‐11 Aramaki‐aza Aoba Aoba‐ku Sendai 980–8579 Japan
| | - Yuji Nashimoto
- Graduate School of Engineering Tohoku University 6‐6‐11 Aramaki‐aza Aoba Aoba‐ku Sendai 980–8579 Japan
- Frontier Research Institute for Interdisciplinary Sciences Tohoku University 6‐3 Aramaki‐aza Aoba Aoba‐ku Sendai 980–8578 Japan
| | - Hitoshi Shiku
- Graduate School of Engineering Tohoku University 6‐6‐11 Aramaki‐aza Aoba Aoba‐ku Sendai 980–8579 Japan
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Zou Y, Zhong Y, Li H, Ding F, Shi X. Electrodeposition of Polysaccharide and Protein Hydrogels for Biomedical Applications. Curr Med Chem 2019; 27:2610-2630. [PMID: 31830879 DOI: 10.2174/0929867326666191212163955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 10/26/2019] [Accepted: 11/22/2019] [Indexed: 11/22/2022]
Abstract
In the last few decades, polysaccharide and protein hydrogels have attracted significant attentions and been applied in various engineering fields. Polysaccharide and protein hydrogels with appealing physical and biological features have been produced to meet different biomedical applications for their excellent properties related to biodegradability, biocompatibility, nontoxicity, and stimuli responsiveness. Numerous methods, such as chemical crosslinking, photo crosslinking, graft polymerization, hydrophobic interaction, polyelectrolyte complexation and electrodeposition have been employed to prepare polysaccharide and protein hydrogels. Electrodeposition is a facile way to produce different polysaccharide and protein hydrogels with the advantages of temporal and spatial controllability. This paper reviews the recent progress in the electrodeposition of different polysaccharide and protein hydrogels. The strategies of pH induced assembly, Ca2+ crosslinking, metal ions induced assembly, oxidation induced assembly derived from electrochemical methods were discussed. Pure, binary blend and ternary blend polysaccharide and protein hydrogels with multiple functionalities prepared by electrodeposition were summarized. In addition, we have reviewed the applications of these hydrogels in drug delivery, tissue engineering and wound dressing.
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Affiliation(s)
- Yang Zou
- School of Printing and Packaging, Wuhan University, Wuhan 430079, China
| | - Yuye Zhong
- School of Printing and Packaging, Wuhan University, Wuhan 430079, China
| | - Houbin Li
- School of Printing and Packaging, Wuhan University, Wuhan 430079, China
| | - Fuyuan Ding
- School of Printing and Packaging, Wuhan University, Wuhan 430079, China.,School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaowen Shi
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
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14
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Liu Y, Yang Y, Shen Y. Tubular Microcapsules with Polysaccharide Membranes Based on a Co-axial Microfluidic Chip. ACS Biomater Sci Eng 2019; 5:6281-6289. [DOI: 10.1021/acsbiomaterials.9b01077] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yanting Liu
- Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Yuanyuan Yang
- Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Yajing Shen
- Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen 518055, China
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15
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Tamura A, Hiramoto K, Ino K, Taira N, Nashimoto Y, Shiku H. Genipin Crosslinking of Electrodeposited Chitosan/Gelatin Hydrogels for Cell Culture. CHEM LETT 2019. [DOI: 10.1246/cl.190466] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ayako Tamura
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Kaoru Hiramoto
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Kosuke Ino
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Noriko Taira
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Yuji Nashimoto
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
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16
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Bombaldi de Souza FC, Camasão DB, Bombaldi de Souza RF, Drouin B, Mantovani D, Moraes ÂM. A simple and effective approach to produce tubular polysaccharide‐based hydrogel scaffolds. J Appl Polym Sci 2019. [DOI: 10.1002/app.48510] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Fernanda Carla Bombaldi de Souza
- Department of Engineering of Materials and of Bioprocesses, School of Chemical EngineeringUniversity of Campinas (UNICAMP) Campinas São Paulo Brazil
| | - Dimitria Bonizol Camasão
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min‐Met‐Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative MedicineLaval University Quebec City Quebec Canada
| | - Renata Francielle Bombaldi de Souza
- Department of Engineering of Materials and of Bioprocesses, School of Chemical EngineeringUniversity of Campinas (UNICAMP) Campinas São Paulo Brazil
| | - Bernard Drouin
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min‐Met‐Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative MedicineLaval University Quebec City Quebec Canada
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min‐Met‐Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative MedicineLaval University Quebec City Quebec Canada
| | - Ângela Maria Moraes
- Department of Engineering of Materials and of Bioprocesses, School of Chemical EngineeringUniversity of Campinas (UNICAMP) Campinas São Paulo Brazil
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17
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Li S, Wang K, Hu Q, Zhang C, Wang B. Direct-write and sacrifice-based techniques for vasculatures. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109936. [PMID: 31500055 DOI: 10.1016/j.msec.2019.109936] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 05/22/2019] [Accepted: 07/01/2019] [Indexed: 12/27/2022]
Abstract
Fabricating biomimetic vasculatures is considered one of the greatest challenges in tissue regeneration due to their complex structures across various length scales. Many strategies have been investigated on how to fabricate tissue-engineering vasculatures (TEVs), including vascular-like and vascularized structures that can replace their native counterparts. The advancement of additive manufacturing (AM) technologies has enabled a wide range of fabrication techniques that can directly-write TEVs with complex and delicate structures. Meanwhile, sacrifice-based techniques, which rely on the removal of encapsulated sacrificial templates to form desired cavity-like structures, have also been widely studied. This review will specifically focus on the two most promising methods in these recently developed technologies, which are the direct-write method and the sacrifice-based method. The performance, advantages, and shortcomings of each technique are analyzed and compared. In the discussion, we list current challenges in this field and present our vision of next-generation TEVs technologies. Perspectives on future research in this field are given at the end.
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Affiliation(s)
- Shuai Li
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA; Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Kan Wang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Qingxi Hu
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China; Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai 200072, China; National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai 200444, China.
| | - Chuck Zhang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA; H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Ben Wang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA; H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
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18
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Kingsley DM, Capuano JA, Corr DT. On-Demand Radial Electrodeposition of Alginate Tubular Structures. ACS Biomater Sci Eng 2019; 5:3184-3189. [PMID: 33304999 DOI: 10.1021/acsbiomaterials.9b00415] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We present an electrodeposition technique for fabricating tubular alginate structures. In this technique, two electrodes (anode and cathode) are suspended in a solution of alginate and insoluble calcium carbonate particles, and the application of an electrical potential produces a localized pH change at the anode surface causing suspended divalent cations to become soluble and cross-link the alginate. We robustly characterize how the fabrication parameters influence the rate of radial deposition on the anode, including deposition time, applied voltage, alginate concentration, type of divalent cation and concentration, and anode diameter. Furthermore, we produce gels with a range of tailorable features, including mechanical properties, dimensions (thick-ness and lumen size), customizable tubular geometries, and radial compositional heterogeneity.
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Affiliation(s)
- David M Kingsley
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
| | - Jared A Capuano
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States.,Biomedical Engineering, Clemson University, 301 Rhodes Research Center, Clemson, South Carolina 29634, United States
| | - David T Corr
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
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19
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Hiramoto K, Ino K, Nashimoto Y, Ito K, Shiku H. Electric and Electrochemical Microfluidic Devices for Cell Analysis. Front Chem 2019; 7:396. [PMID: 31214576 PMCID: PMC6557978 DOI: 10.3389/fchem.2019.00396] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 05/16/2019] [Indexed: 11/24/2022] Open
Abstract
Microfluidic devices are widely used for cell analysis, including applications for single-cell analysis, healthcare, environmental monitoring, and organs-on-a-chip that mimic organs in microfluidics. Moreover, to enable high-throughput cell analysis, real-time monitoring, and non-invasive cell assays, electric and electrochemical systems have been incorporated into microfluidic devices. In this mini-review, we summarize recent advances in these systems, with applications from single cells to three-dimensional cultured cells and organs-on-a-chip. First, we summarize microfluidic devices combined with dielectrophoresis, electrophoresis, and electrowetting-on-a-dielectric for cell manipulation. Next, we review electric and electrochemical assays of cells to determine chemical section activity, and oxygen and glucose consumption activity, among other applications. In addition, we discuss recent devices designed for the electric and electrochemical collection of cell components from cells. Finally, we highlight the future directions of research in this field and their application prospects.
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Affiliation(s)
- Kaoru Hiramoto
- Graduate School of Environmental Studies, Tohoku University, Sendai, Japan
| | - Kosuke Ino
- Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Yuji Nashimoto
- Graduate School of Engineering, Tohoku University, Sendai, Japan
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Japan
| | - Kentaro Ito
- Graduate School of Environmental Studies, Tohoku University, Sendai, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, Sendai, Japan
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20
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Taira N, Ino K, Ida H, Nashimoto Y, Shiku H. Electrodeposition-based rapid bioprinting of 3D-designed hydrogels with a pin art device. Biofabrication 2019; 11:035018. [DOI: 10.1088/1758-5090/ab166e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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21
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Li J, Wu S, Kim E, Yan K, Liu H, Liu C, Dong H, Qu X, Shi X, Shen J, Bentley WE, Payne GF. Electrobiofabrication: electrically based fabrication with biologically derived materials. Biofabrication 2019; 11:032002. [PMID: 30759423 PMCID: PMC7025432 DOI: 10.1088/1758-5090/ab06ea] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
While conventional material fabrication methods focus on form and strength to achieve function, the fabrication of material systems for emerging life science applications will need to satisfy a more subtle set of requirements. A common goal for biofabrication is to recapitulate complex biological contexts (e.g. tissue) for applications that range from animal-on-a-chip to regenerative medicine. In these cases, the material systems will need to: (i) present appropriate surface functionalities over a hierarchy of length scales (e.g. molecular features that enable cell adhesion and topographical features that guide differentiation); (ii) provide a suite of mechanobiological cues that promote the emergence of native-like tissue form and function; and (iii) organize structure to control cellular ingress and molecular transport, to enable the development of an interconnected cellular community that is engaged in cell signaling. And these requirements are not likely to be static but will vary over time and space, which will require capabilities of the material systems to dynamically respond, adapt, heal and reconfigure. Here, we review recent advances in the use of electrically based fabrication methods to build material systems from biological macromolecules (e.g. chitosan, alginate, collagen and silk). Electrical signals are especially convenient for fabrication because they can be controllably imposed to promote the electrophoresis, alignment, self-assembly and functionalization of macromolecules to generate hierarchically organized material systems. Importantly, this electrically based fabrication with biologically derived materials (i.e. electrobiofabrication) is complementary to existing methods (photolithographic and printing), and enables access to the biotechnology toolbox (e.g. enzymatic-assembly and protein engineering, and gene expression) to offer exquisite control of structure and function. We envision that electrobiofabrication will emerge as an important platform technology for organizing soft matter into dynamic material systems that mimic biology's complexity of structure and versatility of function.
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Affiliation(s)
- Jinyang Li
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, United States of America
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22
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Gill AS, Deol PK, Kaur IP. An Update on the Use of Alginate in Additive Biofabrication Techniques. Curr Pharm Des 2019; 25:1249-1264. [PMID: 31020933 DOI: 10.2174/1381612825666190423155835] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 04/15/2019] [Indexed: 01/17/2023]
Abstract
BACKGROUND Solid free forming (SFF) technique also called additive manufacturing process is immensely popular for biofabrication owing to its high accuracy, precision and reproducibility. METHOD SFF techniques like stereolithography, selective laser sintering, fused deposition modeling, extrusion printing, and inkjet printing create three dimension (3D) structures by layer by layer processing of the material. To achieve desirable results, selection of the appropriate technique is an important aspect and it is based on the nature of biomaterial or bioink to be processed. RESULT & CONCLUSION Alginate is a commonly employed bioink in biofabrication process, attributable to its nontoxic, biodegradable and biocompatible nature; low cost; and tendency to form hydrogel under mild conditions. Furthermore, control on its rheological properties like viscosity and shear thinning, makes this natural anionic polymer an appropriate candidate for many of the SFF techniques. It is endeavoured in the present review to highlight the status of alginate as bioink in various SFF techniques.
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Affiliation(s)
- Amoljit Singh Gill
- Department of Mechanical Engineering, I.K. Gujral Punjab Technical University, Kapurthala, Punjab, India
| | - Parneet Kaur Deol
- Department of Pharmaceutics, G.H.G. Khalsa College of Pharmacy, Gurusar Sadhar, Ludhiana, Punjab, India
| | - Indu Pal Kaur
- Department of Pharmaceutics, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
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23
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Taira N, Ino K, Kumagai T, Nashimoto Y, Shiku H. Electrochemical fabrication of fibrin gels via cascade reaction for cell culture. Chem Commun (Camb) 2019; 55:5335-5338. [DOI: 10.1039/c9cc01576k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We present a new strategy for fabricating fibrin gels by electrochemically controlling a cascade reaction and its application in cell culture.
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Affiliation(s)
- Noriko Taira
- Graduate School of Engineering
- Tohoku University
- 6-6-11 Aramaki-aza Aoba
- Aoba-ku
- Sendai 980-8579
| | - Kosuke Ino
- Graduate School of Engineering
- Tohoku University
- 6-6-11 Aramaki-aza Aoba
- Aoba-ku
- Sendai 980-8579
| | - Tatsuki Kumagai
- Graduate School of Environmental Studies
- Tohoku University
- 6-6-11 Aramaki-aza Aoba
- Aoba-ku
- Sendai 980-8579
| | - Yuji Nashimoto
- Graduate School of Engineering
- Tohoku University
- 6-6-11 Aramaki-aza Aoba
- Aoba-ku
- Sendai 980-8579
| | - Hitoshi Shiku
- Graduate School of Engineering
- Tohoku University
- 6-6-11 Aramaki-aza Aoba
- Aoba-ku
- Sendai 980-8579
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24
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Rong M, Ma S, Lin P, Cai M, Zheng Z, Zhou F. Polymerization induced phase separation as a generalized methodology for multi-layered hydrogel tubes. J Mater Chem B 2019. [DOI: 10.1039/c9tb00185a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report a conceptually chemical strategy to facilitate the fabrication of layered hydrogel tubes based on the polymerization-induced phase separation mechanism.
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Affiliation(s)
- Mingming Rong
- State Key Laboratory of Solid Lubrication
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Shuanhong Ma
- State Key Laboratory of Solid Lubrication
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Peng Lin
- Anhui University of Technology
- MaAnshan
- China
| | - Meirong Cai
- State Key Laboratory of Solid Lubrication
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Zijian Zheng
- The Hong Kong Polytechnic University
- Hong Kong SAR
- China
| | - Feng Zhou
- State Key Laboratory of Solid Lubrication
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
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25
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He H, Li J, Cao X, Ruan C, Feng Q, Dong H, Payne GF. Reversibly Reconfigurable Cross-Linking Induces Fusion of Separate Chitosan Hydrogel Films. ACS APPLIED BIO MATERIALS 2018; 1:1695-1704. [DOI: 10.1021/acsabm.8b00504] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Huimin He
- Department of Biomedical Engineering, National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangdong Province Key Laboratory of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China
- Research Center for Human Tissue and Organs Degeneration, Institute Biomedical and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Jinyang Li
- Institute for Bioscience and Biotechnology Research, and Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Xiaodong Cao
- Department of Biomedical Engineering, National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangdong Province Key Laboratory of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China
| | - Changshun Ruan
- Research Center for Human Tissue and Organs Degeneration, Institute Biomedical and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Qi Feng
- Department of Biomedical Engineering, National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangdong Province Key Laboratory of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China
| | - Hua Dong
- Department of Biomedical Engineering, National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangdong Province Key Laboratory of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China
| | - Gregory F. Payne
- Institute for Bioscience and Biotechnology Research, and Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
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26
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Ino K, Matsumoto T, Taira N, Kumagai T, Nashimoto Y, Shiku H. Hydrogel electrodeposition based on bipolar electrochemistry. LAB ON A CHIP 2018; 18:2425-2432. [PMID: 29978172 DOI: 10.1039/c8lc00465j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bipolar electrochemistry has attracted great interest for applications based on sensing, electrografting, and electrodeposition, because the technique enables electrochemical reactions to be induced at multiple bipolar electrodes (BPEs) with only a single power supply. However, there are only a few reports on the biofabrication of hydrogels using BPEs. In this study, we applied bipolar electrochemistry to achieve the electrodeposition of calcium-alginate hydrogels at specified target areas, which is possible because of the use of water electrolysis to obtain acidification at the anodic pole. This scheme was used to successfully fabricate an array of hydrogel deposits at a BPE array. In addition, hydrogels were successfully fabricated either at only the target BPEs or only the target areas of BPEs by repositioning the driving electrodes. Furthermore, a hydrogel was drawn on a large BPE as a canvas by using small driving electrodes. As a demonstration of the electrodeposited hydrogels for bioapplications, mammal cells were cultured in the hydrogels. Because the amount and shape of the hydrogel deposits can be controlled by using the bipolar system, the system we developed can be used for biosensors and cell culture platforms.
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Affiliation(s)
- Kosuke Ino
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan.
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27
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Taira N, Ino K, Robert J, Shiku H. Electrochemical printing of calcium alginate/gelatin hydrogel. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.05.124] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Liu Z, Lu M, Takeuchi M, Yue T, Hasegawa Y, Huang Q, Fukuda T. In vitro mimicking the morphology of hepatic lobule tissue based on Ca-alginate cell sheets. ACTA ACUST UNITED AC 2018; 13:035004. [PMID: 29295968 DOI: 10.1088/1748-605x/aaa4c4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Artificial cell sheets are commonly utilized as buiding blocks for tissue engineering. We propose a novel approach in the fabrication of Ca-alginate gel sheets, embedded with liver cells (RLC-18) in order to mimic liver lobule tissue. Ca-alginate sheets with hepatic lobule-shaped patterns were deposited onto a micro-electrode device using electrodeposition. Viability of embedded cells was ensured to exceed 80%. Cell morphology and biofunctionality were monitored during the one-week culture period and results compared with those of traditional 2D culture. In addition, we detached cell sheets from the electrode substrate and stacked them into a 3D multi-layered structure to mimic the morphology of liver lobule tissue.
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Affiliation(s)
- Zeyang Liu
- Department of Micro-Nano Systems Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
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29
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Liu Y, Li J, Tschirhart T, Terrell JL, Kim E, Tsao C, Kelly DL, Bentley WE, Payne GF. Connecting Biology to Electronics: Molecular Communication via Redox Modality. Adv Healthc Mater 2017; 6. [PMID: 29045017 DOI: 10.1002/adhm.201700789] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/18/2017] [Indexed: 12/13/2022]
Abstract
Biology and electronics are both expert at for accessing, analyzing, and responding to information. Biology uses ions, small molecules, and macromolecules to receive, analyze, store, and transmit information, whereas electronic devices receive input in the form of electromagnetic radiation, process the information using electrons, and then transmit output as electromagnetic waves. Generating the capabilities to connect biology-electronic modalities offers exciting opportunities to shape the future of biosensors, point-of-care medicine, and wearable/implantable devices. Redox reactions offer unique opportunities for bio-device communication that spans the molecular modalities of biology and electrical modality of devices. Here, an approach to search for redox information through an interactive electrochemical probing that is analogous to sonar is adopted. The capabilities of this approach to access global chemical information as well as information of specific redox-active chemical entities are illustrated using recent examples. An example of the use of synthetic biology to recognize external molecular information, process this information through intracellular signal transduction pathways, and generate output responses that can be detected by electrical modalities is also provided. Finally, exciting results in the use of redox reactions to actuate biology are provided to illustrate that synthetic biology offers the potential to guide biological response through electrical cues.
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Affiliation(s)
- Yi Liu
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Jinyang Li
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Tanya Tschirhart
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Jessica L. Terrell
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Eunkyoung Kim
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Chen‐Yu Tsao
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Deanna L. Kelly
- Maryland Psychiatric Research Center University of Maryland School of Medicine Baltimore MD 21228 USA
| | - William E. Bentley
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Gregory F. Payne
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
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30
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Pujol-Vila F, Dietvorst J, Gall-Mas L, Díaz-González M, Vigués N, Mas J, Muñoz-Berbel X. Bioelectrochromic hydrogel for fast antibiotic-susceptibility testing. J Colloid Interface Sci 2017; 511:251-258. [PMID: 29028576 DOI: 10.1016/j.jcis.2017.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/01/2017] [Accepted: 09/01/2017] [Indexed: 10/18/2022]
Abstract
Materials science offers new perspectives in the clinical analysis of antimicrobial sensitivity. However, a biomaterial with the capacity to respond to living bacteria has not been developed to date. We present an electrochromic iron(III)-complexed alginate hydrogel sensitive to bacterial metabolism, here applied to fast antibiotic-susceptibility determination. Bacteria under evaluation are entrapped -and pre-concentrated- in the hydrogel matrix by oxidation of iron (II) ions to iron (III) and in situ formation of the alginate hydrogel in less than 2min and in soft experimental conditions (i.e. room temperature, pH 7, aqueous solution). After incubation with the antibiotic (10min), ferricyanide is added to the biomaterial. Bacteria resistant to the antibiotic dose remain alive and reduce ferricyanide to ferrocyanide, which reacts with the iron (III) ions in the hydrogel to produce Prussian Blue molecules. For a bacterial concentration above 107 colony forming units per mL colour development is detectable with the bare eye in less than 20min. The simplicity, sensitivity, low-cost and short response time of the biomaterial and the assay envisages a high impact of these approaches on sensitive sectors such as public health system, food and beverage industries or environmental monitoring.
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Affiliation(s)
- Ferran Pujol-Vila
- Department of Genetics and Microbiology, Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain.
| | - Jiri Dietvorst
- Centre Nacional de Microelectrònica (IMB-CNM, CSIC), Bellaterra, Barcelona, Spain
| | - Laura Gall-Mas
- Department of Genetics and Microbiology, Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - María Díaz-González
- Centre Nacional de Microelectrònica (IMB-CNM, CSIC), Bellaterra, Barcelona, Spain
| | - Núria Vigués
- Department of Genetics and Microbiology, Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Jordi Mas
- Department of Genetics and Microbiology, Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Xavier Muñoz-Berbel
- Centre Nacional de Microelectrònica (IMB-CNM, CSIC), Bellaterra, Barcelona, Spain
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31
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Maerten C, Jierry L, Schaaf P, Boulmedais F. Review of Electrochemically Triggered Macromolecular Film Buildup Processes and Their Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2017; 9:28117-28138. [PMID: 28762716 DOI: 10.1021/acsami.7b06319] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Macromolecular coatings play an important role in many technological areas, ranging from the car industry to biosensors. Among the different coating technologies, electrochemically triggered processes are extremely powerful because they allow in particular spatial confinement of the film buildup up to the micrometer scale on microelectrodes. Here, we review the latest advances in the field of electrochemically triggered macromolecular film buildup processes performed in aqueous solutions. All these processes will be discussed and related to their several applications such as corrosion prevention, biosensors, antimicrobial coatings, drug-release, barrier properties and cell encapsulation. Special emphasis will be put on applications in the rapidly growing field of biosensors. Using polymers or proteins, the electrochemical buildup of the films can result from a local change of macromolecules solubility, self-assembly of polyelectrolytes through electrostatic/ionic interactions or covalent cross-linking between different macromolecules. The assembly process can be in one step or performed step-by-step based on an electrical trigger affecting directly the interacting macromolecules or generating ionic species.
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Affiliation(s)
- Clément Maerten
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22 , 23 rue du Loess, F-67034 Strasbourg Cedex, France
| | - Loïc Jierry
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22 , 23 rue du Loess, F-67034 Strasbourg Cedex, France
| | - Pierre Schaaf
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22 , 23 rue du Loess, F-67034 Strasbourg Cedex, France
- INSERM, Unité 1121 "Biomaterials and Bioengineering" , 11 rue Humann, F-67085 Strasbourg Cedex, France
- Faculté de Chirurgie Dentaire, Fédération de Médecine Translationnelle de Strasbourg (FMTS), and Fédération des Matériaux et Nanoscience d'Alsace (FMNA), Université de Strasbourg , 8 rue Sainte Elisabeth, F-67000 Strasbourg, France
- University of Strasbourg Institute for Advanced Study , 5 allée du Général Rouvillois, F-67083 Strasbourg, France
| | - Fouzia Boulmedais
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22 , 23 rue du Loess, F-67034 Strasbourg Cedex, France
- University of Strasbourg Institute for Advanced Study , 5 allée du Général Rouvillois, F-67083 Strasbourg, France
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32
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Chen W, Zhu B, Ma L, Hua X. Shape-controlled fabrication of cell-laden calcium alginate-PLL hydrogel microcapsules by electrodeposition on microelectrode. J Biomater Appl 2017; 32:504-510. [DOI: 10.1177/0885328217726439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Weinan Chen
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
| | - Bowen Zhu
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
| | - Li Ma
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
| | - Xiaoqing Hua
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
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33
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Shang W, Liu Y, Wan W, Hu C, Liu Z, Wong CT, Fukuda T, Shen Y. Hybrid 3D printing and electrodeposition approach for controllable 3D alginate hydrogel formation. Biofabrication 2017; 9:025032. [PMID: 28436920 DOI: 10.1088/1758-5090/aa6ed8] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Calcium alginate hydrogels are widely used as biocompatible materials in a substantial number of biomedical applications. This paper reports on a hybrid 3D printing and electrodeposition approach for forming 3D calcium alginate hydrogels in a controllable manner. Firstly, a specific 3D hydrogel printing system is developed by integrating a customized ejection syringe with a conventional 3D printer. Then, a mixed solution of sodium alginate and CaCO3 nanoparticles is filled into the syringe and can be continuously ejected out of the syringe nozzle onto a conductive substrate. When applying a DC voltage (∼5 V) between the substrate (anode) and the nozzle (cathode), the Ca2+ released from the CaCO3 particles can crosslink the alginate to form calcium alginate hydrogel on the substrate. To elucidate the gel formation mechanism and better control the gel growth, we can further establish and verify a gel growth model by considering several key parameters, i.e., applied voltage and deposition time. The experimental results indicate that the alginate hydrogel of various 3D structures can be formed by controlling the movement of the 3D printer. A cell viability test is conducted and shows that the encapsulated cells in the gel can maintain a high survival rate (∼99% right after gel formation). This research establishes a reliable method for the controllable formation of 3D calcium alginate hydrogel, exhibiting great potential for use in basic biology and applied biomedical engineering.
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Affiliation(s)
- Wanfeng Shang
- Department of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an, People's Republic of China
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34
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Ozawa F, Ino K, Shiku H, Matsue T. Cell Sheet Fabrication Using RGD Peptide-coupled Alginate Hydrogels Fabricated by an Electrodeposition Method. CHEM LETT 2017. [DOI: 10.1246/cl.170003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fumisato Ozawa
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki, Aoba, Sendai, Miyagi 980-8579
- WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba, Sendai, Miyagi 980-8579
| | - Kosuke Ino
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki, Aoba, Sendai, Miyagi 980-8579
| | - Hitoshi Shiku
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki, Aoba, Sendai, Miyagi 980-8579
| | - Tomokazu Matsue
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aramaki, Aoba, Sendai, Miyagi 980-8579
- WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba, Sendai, Miyagi 980-8579
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35
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Liu Z, Takeuchi M, Nakajima M, Hu C, Hasegawa Y, Huang Q, Fukuda T. Three-dimensional hepatic lobule-like tissue constructs using cell-microcapsule technology. Acta Biomater 2017; 50:178-187. [PMID: 27993637 DOI: 10.1016/j.actbio.2016.12.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/16/2016] [Accepted: 12/07/2016] [Indexed: 12/27/2022]
Abstract
The proper functioning of the liver and tissues containing hepatocytes greatly depends upon the intricate organization of the cells. Consequently, controlling the shape of three-dimensional (3D) cellular constructs is an important issue for in vitro applications of fabricated artificial livers. However, the precise control of tissue shape at the microscale cannot be achieved with various commonly used 3D tissue-engineered building units, such as spheroids. Here, we present the fabrication of hepatic lobule-shaped microtissue (HLSM) containing rat liver (RLC-18) cells. By using cell-microcapsule technology, RLC-18 cells were encapsulated in the core region of poly-l-lysine-alginate microcapsules. After 14days of long-term cultivation, RLC-18 cells self-assembled into HLSM, and the cells fully occupied the microcapsule. By monitoring the cell number and albumin secretion during culture and characterizing the dimensions of the fabricated tissue, we demonstrated that the HLSM showed higher hepatic function as compared with normal cell spheroids. We also showcased the assembly of these microtissues into a 3D four-layered hepatic lobule model by a facile micromanipulation method. Our technology for fabricating 3D multilayer hepatic lobule-like, biofunctional tissue enables the precise control of tissue shape in three dimensions. Furthermore, these constructs can serve as tissue-engineered building blocks for larger organs and cellular implants in clinical treatment.
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Affiliation(s)
- Zeyang Liu
- Department of Micro-Nano Systems Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Masaru Takeuchi
- Department of Micro-Nano Systems Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Masahiro Nakajima
- Department of Micro-Nano Systems Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Chengzhi Hu
- Multi-Scale Robotics Lab, ETH Zurich, Tannenstrasse 3, CLA H3, Zurich 8092, Switzerland
| | - Yasuhisa Hasegawa
- Department of Micro-Nano Systems Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Qiang Huang
- Intelligent Robotics Institute, School of Mechatronical Engineering, Beijing Institute of Technology, Key Laboratory of Biomimetic Robots and Systems, Ministry of Education of China, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Toshio Fukuda
- Department of Micro-Nano Systems Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; Intelligent Robotics Institute, School of Mechatronical Engineering, Beijing Institute of Technology, Key Laboratory of Biomimetic Robots and Systems, Ministry of Education of China, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
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36
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Liu Y, Tsao C, Kim E, Tschirhart T, Terrell JL, Bentley WE, Payne GF. Using a Redox Modality to Connect Synthetic Biology to Electronics: Hydrogel-Based Chemo-Electro Signal Transduction for Molecular Communication. Adv Healthc Mater 2017; 6. [PMID: 27863177 DOI: 10.1002/adhm.201600908] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/15/2016] [Indexed: 01/08/2023]
Abstract
A hydrogel-based dual film coating is electrofabricated for transducing bio-relevant chemical information into electronical output. The outer film has a synthetic biology construct that recognizes an external molecular signal and transduces this input into the expression of an enzyme that converts redox-inactive substrate into a redox-active intermediate, which is detected through an amplification mechanism of the inner redox-capacitor film.
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Affiliation(s)
- Yi Liu
- Institute for Bioscience and Biotechnology Research University of Maryland College Park MD 20742 USA
| | - Chen‐Yu Tsao
- Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Eunkyoung Kim
- Institute for Bioscience and Biotechnology Research University of Maryland College Park MD 20742 USA
| | - Tanya Tschirhart
- Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Jessica L. Terrell
- Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - William E. Bentley
- Institute for Bioscience and Biotechnology Research University of Maryland College Park MD 20742 USA
- Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
| | - Gregory F. Payne
- Institute for Bioscience and Biotechnology Research University of Maryland College Park MD 20742 USA
- Fischell Department of Bioengineering University of Maryland College Park MD 20742 USA
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37
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Nashimoto Y, Hayashi T, Kunita I, Nakamasu A, Torisawa YS, Nakayama M, Takigawa-Imamura H, Kotera H, Nishiyama K, Miura T, Yokokawa R. Integrating perfusable vascular networks with a three-dimensional tissue in a microfluidic device. Integr Biol (Camb) 2017; 9:506-518. [DOI: 10.1039/c7ib00024c] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Creating vascular networks in tissues is crucial for tissue engineering.
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Affiliation(s)
- Yuji Nashimoto
- Department of Micro Engineering
- Kyoto University
- Kyoto 615-8540
- Japan
| | - Tomoya Hayashi
- Department of Micro Engineering
- Kyoto University
- Kyoto 615-8540
- Japan
| | - Itsuki Kunita
- International Research Center for Medical Sciences (IRCMS)
- Kumamoto University
- Kumamoto 860-8556
- Japan
| | - Akiko Nakamasu
- Graduate School of Medical Sciences
- Kyushu University
- Fukuoka 812-8582
- Japan
| | - Yu-suke Torisawa
- Department of Micro Engineering
- Kyoto University
- Kyoto 615-8540
- Japan
- Hakubi Center for Advanced Research
| | | | | | - Hidetoshi Kotera
- Department of Micro Engineering
- Kyoto University
- Kyoto 615-8540
- Japan
| | - Koichi Nishiyama
- International Research Center for Medical Sciences (IRCMS)
- Kumamoto University
- Kumamoto 860-8556
- Japan
| | - Takashi Miura
- Graduate School of Medical Sciences
- Kyushu University
- Fukuoka 812-8582
- Japan
| | - Ryuji Yokokawa
- Department of Micro Engineering
- Kyoto University
- Kyoto 615-8540
- Japan
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38
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Kim E, Liu Y, Ben-Yoav H, Winkler TE, Yan K, Shi X, Shen J, Kelly DL, Ghodssi R, Bentley WE, Payne GF. Fusing Sensor Paradigms to Acquire Chemical Information: An Integrative Role for Smart Biopolymeric Hydrogels. Adv Healthc Mater 2016; 5:2595-2616. [PMID: 27616350 PMCID: PMC5485850 DOI: 10.1002/adhm.201600516] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 06/26/2016] [Indexed: 12/14/2022]
Abstract
The Information Age transformed our lives but it has had surprisingly little impact on the way chemical information (e.g., from our biological world) is acquired, analyzed and communicated. Sensor systems are poised to change this situation by providing rapid access to chemical information. This access will be enabled by technological advances from various fields: biology enables the synthesis, design and discovery of molecular recognition elements as well as the generation of cell-based signal processors; physics and chemistry are providing nano-components that facilitate the transmission and transduction of signals rich with chemical information; microfabrication is yielding sensors capable of receiving these signals through various modalities; and signal processing analysis enhances the extraction of chemical information. The authors contend that integral to the development of functional sensor systems will be materials that (i) enable the integrative and hierarchical assembly of various sensing components (for chemical recognition and signal transduction) and (ii) facilitate meaningful communication across modalities. It is suggested that stimuli-responsive self-assembling biopolymers can perform such integrative functions, and redox provides modality-spanning communication capabilities. Recent progress toward the development of electrochemical sensors to manage schizophrenia is used to illustrate the opportunities and challenges for enlisting sensors for chemical information processing.
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Affiliation(s)
- Eunkyoung Kim
- Institute for Biosystems and Biotechnology Research, University of Maryland, College Park, MD, 20742, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, 20742, USA
| | - Yi Liu
- Institute for Biosystems and Biotechnology Research, University of Maryland, College Park, MD, 20742, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, 20742, USA
| | - Hadar Ben-Yoav
- Department of Biomedical Engineering, Ben-Gurion University of the Negev, Beer Sheva, 8410501, Israel
| | - Thomas E Winkler
- Institute for Systems Research, University of Maryland, College Park, MD, 20742, USA
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Kun Yan
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China
| | - Xiaowen Shi
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China
| | - Jana Shen
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, MD, 21201, USA
| | - Deanna L Kelly
- Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, 21228, USA
| | - Reza Ghodssi
- Institute for Systems Research, University of Maryland, College Park, MD, 20742, USA
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD, 20742, USA
| | - William E Bentley
- Institute for Biosystems and Biotechnology Research, University of Maryland, College Park, MD, 20742, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, 20742, USA
| | - Gregory F Payne
- Institute for Biosystems and Biotechnology Research, University of Maryland, College Park, MD, 20742, USA.
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, 20742, USA.
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39
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Ozawa F, Ino K, Shiku H, Matsue T. Electrochemical Hydrogel Lithography of Calcium-Alginate Hydrogels for Cell Culture. MATERIALS 2016; 9:ma9090744. [PMID: 28773863 PMCID: PMC5457093 DOI: 10.3390/ma9090744] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 08/12/2016] [Accepted: 08/22/2016] [Indexed: 01/06/2023]
Abstract
Here we propose a novel electrochemical lithography methodology for fabricating calcium-alginate hydrogels having controlled shapes. We separated the chambers for Ca2+ production and gel formation with alginate with a semipermeable membrane. Ca2+ formed in the production chamber permeated through the membrane to fabricate a gel structure on the membrane in the gel formation chamber. When the calcium-alginate hydrogels were modified with collagen, HepG2 cells proliferated on the hydrogels. These results show that electrochemical hydrogel lithography is useful for cell culture.
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Affiliation(s)
- Fumisato Ozawa
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan.
- WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8579, Japan.
| | - Kosuke Ino
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan.
| | - Hitoshi Shiku
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan.
| | - Tomokazu Matsue
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan.
- WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8579, Japan.
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40
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Liu Z, Takeuchi M, Nakajima M, Hasegawa Y, Huang Q, Fukuda T. Shape-controlled high cell-density microcapsules by electrodeposition. Acta Biomater 2016; 37:93-100. [PMID: 27045348 DOI: 10.1016/j.actbio.2016.03.045] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 03/23/2016] [Accepted: 03/31/2016] [Indexed: 12/27/2022]
Abstract
UNLABELLED Cell encapsulation within alginate-poly-l-lysine (PLL) microcapsules has been developed to provide a miniaturized three-dimensional (3D) microenvironment with an aqueous core while promoting development of encapsulated cells into high cell-density structures. In this paper, a novel method for fabricating shape-controlled alginate-PLL microcapsules to construct 3D cell structures based on electrodeposition method is provided. Two-dimensional Ca-alginate cell-laden gel membranes were electrodeposited onto a micro-patterned electrode and further detached from the electrode. The PLL was coated onto the gel structures to form alginate-PLL complex as an outer shell and sodium citric solution was utilized to melt the internal alginate to achieve miniaturized 3D microcapsules (sphere, cuboid, and rod shape). By this proposed method, rat liver cells (RLC-18) formed multi-cellular aggregates with high cell-density after cultivation for 2weeks. STATEMENT OF SIGNIFICANCE The use of alginate-poly-l-lysine (PLL) microcapsules has shown great potential in fabricating 3D cell structures with high cell density. Despite their success related to their ability to provide a miniaturized microenvironment with an aqueous core, alginate-PLL microcapsules has drawback such as a limited shape-control ability. Because of the mechanism of Ca-induced alginate gel formation, it is still difficult to precisely control the gelation process to produce alginate-PLL microcapsules with specific shape. The present study provides an electrodeposition-based method to generate shape-controlled microcapsules for 3D cell structures. Sphere, cuboid, and rod shaped microcapsules of RLC-18 cells were produced for long-term culture to obtain desired morphologies of cell aggregates.
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41
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Kwag HR, Serbo JV, Korangath P, Sukumar S, Romer LH, Gracias DH. A Self-Folding Hydrogel In Vitro Model for Ductal Carcinoma. Tissue Eng Part C Methods 2016; 22:398-407. [PMID: 26831041 DOI: 10.1089/ten.tec.2015.0442] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A significant challenge in oncology is the need to develop in vitro models that accurately mimic the complex microenvironment within and around normal and diseased tissues. Here, we describe a self-folding approach to create curved hydrogel microstructures that more accurately mimic the geometry of ducts and acini within the mammary glands, as compared to existing three-dimensional block-like models or flat dishes. The microstructures are composed of photopatterned bilayers of poly (ethylene glycol) diacrylate (PEGDA), a hydrogel widely used in tissue engineering. The PEGDA bilayers of dissimilar molecular weights spontaneously curve when released from the underlying substrate due to differential swelling ratios. The photopatterns can be altered via AutoCAD-designed photomasks so that a variety of ductal and acinar mimetic structures can be mass-produced. In addition, by co-polymerizing methacrylated gelatin (methagel) with PEGDA, microstructures with increased cell adherence are synthesized. Biocompatibility and versatility of our approach is highlighted by culturing either SUM159 cells, which were seeded postfabrication, or MDA-MB-231 cells, which were encapsulated in hydrogels; cell viability is verified over 9 and 15 days, respectively. We believe that self-folding processes and associated tubular, curved, and folded constructs like the ones demonstrated here can facilitate the design of more accurate in vitro models for investigating ductal carcinoma.
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Affiliation(s)
- Hye Rin Kwag
- 1 Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Janna V Serbo
- 2 Department of Biomedical Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Preethi Korangath
- 3 Department of Oncology, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Saraswati Sukumar
- 3 Department of Oncology, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Lewis H Romer
- 2 Department of Biomedical Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland.,4 Department of Anesthesiology and Critical Care Medicine, Cell Biology, Pediatrics, Center for Cell Dynamics, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - David H Gracias
- 1 Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland.,5 Department of Materials Science and Engineering, Johns Hopkins University , Baltimore, Maryland
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42
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Liu Z, Takeuchi M, Nakajima M, Fukuda T, Hasegawa Y, Huang Q. Batch Fabrication of Microscale Gear-Like Tissue by Alginate-Poly-L-lysine (PLL) Microcapsules System. IEEE Robot Autom Lett 2016. [DOI: 10.1109/lra.2016.2514500] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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43
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Paper-Based Electrodeposition Chip for 3D Alginate Hydrogel Formation. MICROMACHINES 2015. [DOI: 10.3390/mi6101438] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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44
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Gao Q, He Y, Fu JZ, Liu A, Ma L. Coaxial nozzle-assisted 3D bioprinting with built-in microchannels for nutrients delivery. Biomaterials 2015; 61:203-15. [DOI: 10.1016/j.biomaterials.2015.05.031] [Citation(s) in RCA: 312] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 05/11/2015] [Accepted: 05/18/2015] [Indexed: 10/23/2022]
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45
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Kirdponpattara S, Khamkeaw A, Sanchavanakit N, Pavasant P, Phisalaphong M. Structural modification and characterization of bacterial cellulose-alginate composite scaffolds for tissue engineering. Carbohydr Polym 2015; 132:146-55. [PMID: 26256335 DOI: 10.1016/j.carbpol.2015.06.059] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 06/18/2015] [Accepted: 06/20/2015] [Indexed: 11/25/2022]
Abstract
A novel bacterial cellulose-alginate composite scaffold (N-BCA) was fabricated by freeze drying and subsequent crosslinking with Ca(2+). The N-BCA then underwent a second freeze drying step to remove water without altering the physical structure. A stable structure of N-BCA with open and highly interconnected pores in the range of 90-160 μm was constructed. The N-BCA was stable in both water and PBS. The swelling ability of N-BCA in water was approximately 50 times its weight, which was about 6.5 times that of the freeze dried bacterial cellulose pellicles. N-BCA demonstrated no cytotoxicity against L929 mouse fibroblast cells. For long-term culture, N-BCA supported attachment, spreading, and proliferation of human gingival fibroblast (GF) on the surface. However, under static conditions, the cell migration and growth inside the scaffold were limited. Because of its biocompatibility and open macroporous structure, N-BCA could potentially be used as a scaffold for tissue engineering.
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Affiliation(s)
- Suchata Kirdponpattara
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Department of Chemical Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand
| | - Arnon Khamkeaw
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Neeracha Sanchavanakit
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Prasit Pavasant
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Muenduen Phisalaphong
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand.
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46
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Anderson A, Davis J. Electrochemical Actuators: Controlled Drug Release Strategies for use in Micro Devices. ELECTROANAL 2015. [DOI: 10.1002/elan.201400643] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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47
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INO K. Microchemistry- and MEMS-based Integrated Electrochemical Devices for Bioassay Applications. ELECTROCHEMISTRY 2015. [DOI: 10.5796/electrochemistry.83.688] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Kosuke INO
- Graduate School of Environmental Studies, Tohoku University
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48
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Zhang Y, Yu Y, Dolati F, Ozbolat IT. Effect of multiwall carbon nanotube reinforcement on coaxially extruded cellular vascular conduits. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 39:126-33. [PMID: 24863208 PMCID: PMC4281169 DOI: 10.1016/j.msec.2014.02.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/20/2014] [Accepted: 02/18/2014] [Indexed: 11/25/2022]
Abstract
Due to its abundant source, good biocompatibility, low price and mild crosslinking process, alginate is an ideal selection for tissue engineering applications. In this work, alginate vascular conduits were fabricated through a coaxial extrusion-based system. However, due to the inherent weak mechanical properties of alginate, the vascular conduits are not capable of biomimicking natural vascular system. In this paper, multiwall carbon nanotubes (MWCNT) were used to reinforce vascular conduits. Mechanical, dehydration, swelling and degradation tests were performed to understand influences of MWCNT reinforcement. The unique mechanical properties together with perfusion and diffusional capability are two important factors to mimic the nature. Thus, perfusion experiments were also conducted to explore the MWCNT reinforcement effect. In addition, cell viability and tissue histology were conducted to evaluate the biological performance of conduits both in short and long term for MWCNT reinforcement.
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Affiliation(s)
- Yahui Zhang
- Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, IA 52242, USA; Biomanufacturing Laboratory, Center for Computer-Aided Design, The University of Iowa, 139 Engineering Research Facility, Iowa City, IA 52242, USA
| | - Yin Yu
- Department of Biomedical Engineering, The University of Iowa, Iowa City, IA 52242, USA; Biomanufacturing Laboratory, Center for Computer-Aided Design, The University of Iowa, 139 Engineering Research Facility, Iowa City, IA 52242, USA
| | - Farzaneh Dolati
- Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, IA 52242, USA; Biomanufacturing Laboratory, Center for Computer-Aided Design, The University of Iowa, 139 Engineering Research Facility, Iowa City, IA 52242, USA
| | - Ibrahim T Ozbolat
- Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, IA 52242, USA; Biomanufacturing Laboratory, Center for Computer-Aided Design, The University of Iowa, 139 Engineering Research Facility, Iowa City, IA 52242, USA.
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49
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Yu Y, Zhang Y, Martin JA, Ozbolat IT. Evaluation of cell viability and functionality in vessel-like bioprintable cell-laden tubular channels. J Biomech Eng 2014; 135:91011. [PMID: 23719889 DOI: 10.1115/1.4024575] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 05/06/2013] [Indexed: 12/20/2022]
Abstract
Organ printing is a novel concept recently introduced in developing artificial three-dimensional organs to bridge the gap between transplantation needs and organ shortage. One of the major challenges is inclusion of blood-vessellike channels between layers to support cell viability, postprinting functionality in terms of nutrient transport, and waste removal. In this research, we developed a novel and effective method to print tubular channels encapsulating cells in alginate to mimic the natural vascular system. An experimental investigation into the influence on cartilage progenitor cell (CPCs) survival, and the function of printing parameters during and after the printing process were presented. CPC functionality was evaluated by checking tissue-specific genetic marker expression and extracellular matrix production. Our results demonstrated the capability of direct fabrication of cell-laden tubular channels by our newly designed coaxial nozzle assembly and revealed that the bioprinting process could induce quantifiable cell death due to changes in dispensing pressure, coaxial nozzle geometry, and biomaterial concentration. Cells were able to recover during incubation, as well as to undergo differentiation with high-level cartilage-associated gene expression. These findings may not only help optimize our system but also can be applied to biomanufacturing of 3D functional cellular tissue engineering constructs for various organ systems.
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Affiliation(s)
- Yin Yu
- BioMfG Laboratory, Center for Computer-Aided Design, The University of Iowa, Iowa City, IA, 52242, USA
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50
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Yu Y, Zhang Y, Martin JA, Ozbolat IT. Evaluation of cell viability and functionality in vessel-like bioprintable cell-laden tubular channels. J Biomech Eng 2013. [PMID: 23719889 DOI: 10.1115/l.4024575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
Organ printing is a novel concept recently introduced in developing artificial three-dimensional organs to bridge the gap between transplantation needs and organ shortage. One of the major challenges is inclusion of blood-vessellike channels between layers to support cell viability, postprinting functionality in terms of nutrient transport, and waste removal. In this research, we developed a novel and effective method to print tubular channels encapsulating cells in alginate to mimic the natural vascular system. An experimental investigation into the influence on cartilage progenitor cell (CPCs) survival, and the function of printing parameters during and after the printing process were presented. CPC functionality was evaluated by checking tissue-specific genetic marker expression and extracellular matrix production. Our results demonstrated the capability of direct fabrication of cell-laden tubular channels by our newly designed coaxial nozzle assembly and revealed that the bioprinting process could induce quantifiable cell death due to changes in dispensing pressure, coaxial nozzle geometry, and biomaterial concentration. Cells were able to recover during incubation, as well as to undergo differentiation with high-level cartilage-associated gene expression. These findings may not only help optimize our system but also can be applied to biomanufacturing of 3D functional cellular tissue engineering constructs for various organ systems.
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Affiliation(s)
- Yin Yu
- BioMfG Laboratory, Center for Computer-Aided Design, The University of Iowa, Iowa City, IA, 52242, USA
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