1
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Xu J, Liu X, Liang P, Yuan H, Yang T. In Situ Preparation of Tannic Acid-Modified Poly( N-isopropylacrylamide) Hydrogel Coatings for Boosting Cell Response. Pharmaceutics 2024; 16:538. [PMID: 38675199 PMCID: PMC11054217 DOI: 10.3390/pharmaceutics16040538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
The improvement of the capability of poly(N-isopropylacrylamide) (PNIPAAm) hydrogel coating in cell adhesion and detachment is critical to efficiently prepare cell sheets applied in cellular therapies and tissue engineering. To enhance cell response on the surface, the amine group-modified PNIPAAm (PNIPAAm-APTES) nanohydrogels were synthesized and deposited spontaneously on tannic acid (TA)-modified polyethylene (PE) plates. Subsequently, TA was introduced onto PNIPAAm-APTES nanohydrogels to fabricate coatings composed of TA-modified PNIPAAm-APTES (PNIPAAm-APTES-TA). Characterization techniques, including TEM, SEM, XPS, and UV-Vis spectroscopy, confirmed the effective deposition of hydrogels of PNIPAAm as well as the morphologies, content of chemical bonding-TA, and stability of various coatings. Importantly, the porous hydrogel coatings exhibited superhydrophilicity at 20 °C and thermo-responsive behavior. The fluorescence measurement demonstrated that the coating's stability effectively regulated protein behavior, influencing cell response. Notably, cell response tests revealed that even without precise control over the chain length/thickness of PNIPAAm during synthesis, the coatings enhanced cell adhesion and detachment, facilitating efficient cell culture. This work represented a novel and facile approach to preparing bioactive PNIPAAm for cell culture.
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Affiliation(s)
- Jufei Xu
- Department of Pharmacy, Air Force Medical Center, PLA, Air Force Medical University, Beijing 100142, China;
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China;
| | - Xiangzhe Liu
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengpeng Liang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;
| | - Hailong Yuan
- Department of Pharmacy, Air Force Medical Center, PLA, Air Force Medical University, Beijing 100142, China;
| | - Tianyou Yang
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China;
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2
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Kim Y, Jahan UM, Deltchev AP, Lavrik N, Reukov V, Minko S. Strategy for Nonenzymatic Harvesting of Cells via Decoupling of Adhesive and Disjoining Domains of Nanostructured Stimulus-Responsive Polymer Films. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49012-49021. [PMID: 37824473 PMCID: PMC10614186 DOI: 10.1021/acsami.3c11296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/28/2023] [Indexed: 10/14/2023]
Abstract
The nanostructured polymer film introduces a novel mechanism of nonenzymatic cell harvesting by decoupling solid cell-adhesive and soft stimulus-responsive cell-disjoining areas on the surface. The key characteristics of this architecture are the decoupling of adhesion from detachment and the impermeability to the integrin protein complex of the adhesive domains. This surface design eliminates inherent limitations of thermoresponsive coatings, namely, the necessity for the precise thickness of the coating, grafting or cross-linking density, and material of the basal substrate. The concept is demonstrated with nanostructured thermoresponsive films made of cell-adhesive epoxy photoresist domains and cell-disjoining poly(N-isopropylacrylamide) brush domains.
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Affiliation(s)
- Yongwook Kim
- Nanostructured
Material Lab, University of Georgia, Athens, Georgia 30602, United States
- Department
of Chemistry, University of Georgia, Athens, Georgia 30602, United States
- Lawrence
Livermore National Lab, Livermore, California 94500, United States
| | - Ummay Mowshome Jahan
- Department
of Textiles, Merchandising, and Interiors, University of Georgia, Athens, Georgia 30602, United States
- Department
of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Alexander Pennef Deltchev
- Nanostructured
Material Lab, University of Georgia, Athens, Georgia 30602, United States
- Department
of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Nickolay Lavrik
- Center
for Nanophase Materials Sciences, Oak Ridge
National Lab, Oak Ridge, Tennessee 37831, United States
| | - Vladimir Reukov
- Department
of Textiles, Merchandising, and Interiors, University of Georgia, Athens, Georgia 30602, United States
| | - Sergiy Minko
- Nanostructured
Material Lab, University of Georgia, Athens, Georgia 30602, United States
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3
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Yang X, Li Q, Liu W, Zong C, Wei L, Shi Y, Han Z. Mesenchymal stromal cells in hepatic fibrosis/cirrhosis: from pathogenesis to treatment. Cell Mol Immunol 2023; 20:583-599. [PMID: 36823236 PMCID: PMC10229624 DOI: 10.1038/s41423-023-00983-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/29/2023] [Indexed: 02/25/2023] Open
Abstract
Hepatic fibrosis/cirrhosis is a significant health burden worldwide, resulting in liver failure or hepatocellular carcinoma (HCC) and accounting for many deaths each year. The pathogenesis of hepatic fibrosis/cirrhosis is very complex, which makes treatment challenging. Endogenous mesenchymal stromal cells (MSCs) have been shown to play pivotal roles in the pathogenesis of hepatic fibrosis. Paradoxically, exogenous MSCs have also been used in clinical trials for liver cirrhosis, and their effectiveness has been observed in most completed clinical trials. There are still many issues to be resolved to promote the use of MSCs in the clinic in the future. In this review, we will examine the controversial role of MSCs in the pathogenesis and treatment of hepatic fibrosis/cirrhosis. We also investigated the clinical trials involving MSCs in liver cirrhosis, summarized the parameters that need to be standardized, and discussed how to promote the use of MSCs from a clinical perspective.
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Affiliation(s)
- Xue Yang
- Department of Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
- Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Ministry of Education, Eastern Hepatobiliary Surgery Hospital/National Center for Liver Cancer, Naval Medical University, Shanghai, 200438, China
- The Third Affiliated Hospital of Soochow University, Institutes for Translational Medicine, State Key Laboratory of Radiation Medicine and Protection, Key Laboratory of Stem Cells and Medical Biomaterials of Jiangsu Province, Medical College of Soochow University, Soochow University, Suzhou, 215000, China
- Department of Experimental Medicine, TOR, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Qing Li
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Wenting Liu
- Department of Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
- Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Ministry of Education, Eastern Hepatobiliary Surgery Hospital/National Center for Liver Cancer, Naval Medical University, Shanghai, 200438, China
| | - Chen Zong
- Department of Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
- Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Ministry of Education, Eastern Hepatobiliary Surgery Hospital/National Center for Liver Cancer, Naval Medical University, Shanghai, 200438, China
| | - Lixin Wei
- Department of Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
- Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Ministry of Education, Eastern Hepatobiliary Surgery Hospital/National Center for Liver Cancer, Naval Medical University, Shanghai, 200438, China
| | - Yufang Shi
- The Third Affiliated Hospital of Soochow University, Institutes for Translational Medicine, State Key Laboratory of Radiation Medicine and Protection, Key Laboratory of Stem Cells and Medical Biomaterials of Jiangsu Province, Medical College of Soochow University, Soochow University, Suzhou, 215000, China.
- Department of Experimental Medicine, TOR, University of Rome Tor Vergata, 00133, Rome, Italy.
| | - Zhipeng Han
- Department of Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China.
- Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Ministry of Education, Eastern Hepatobiliary Surgery Hospital/National Center for Liver Cancer, Naval Medical University, Shanghai, 200438, China.
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4
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Pallaoro M, Modina SC, Fiorati A, Altomare L, Mirra G, Scocco P, Di Giancamillo A. Towards a More Realistic In Vitro Meat: The Cross Talk between Adipose and Muscle Cells. Int J Mol Sci 2023; 24:ijms24076630. [PMID: 37047600 PMCID: PMC10095036 DOI: 10.3390/ijms24076630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/22/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
According to statistics and future predictions, meat consumption will increase in the coming years. Considering both the environmental impact of intensive livestock farming and the importance of protecting animal welfare, the necessity of finding alternative strategies to satisfy the growing meat demand is compelling. Biotechnologies are responding to this demand by developing new strategies for producing meat in vitro. The manufacturing of cultured meat has faced criticism concerning, above all, the practical issues of culturing together different cell types typical of meat that are partly responsible for meat’s organoleptic characteristics. Indeed, the existence of a cross talk between adipose and muscle cells has critical effects on the outcome of the co-culture, leading to a general inhibition of myogenesis in favor of adipogenic differentiation. This review aims to clarify the main mechanisms and the key molecules involved in this cross talk and provide an overview of the most recent and successful meat culture 3D strategies for overcoming this challenge, focusing on the approaches based on farm-animal-derived cells.
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Affiliation(s)
- Margherita Pallaoro
- Department of Veterinary Medicine and Animal Sciences (DIVAS), University of Milan, Via dell’Università 6, 26900 Lodi, Italy
| | - Silvia Clotilde Modina
- Department of Veterinary Medicine and Animal Sciences (DIVAS), University of Milan, Via dell’Università 6, 26900 Lodi, Italy
| | - Andrea Fiorati
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Polytechnic University of Milan, Via Luigi Mancinelli, 7, 20131 Milan, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
| | - Lina Altomare
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Polytechnic University of Milan, Via Luigi Mancinelli, 7, 20131 Milan, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
| | - Giorgio Mirra
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell’Università 16, 35020 Legnaro, Italy
| | - Paola Scocco
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032 Camerino, Italy
| | - Alessia Di Giancamillo
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli 31, 20133 Milan, Italy
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5
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Yang Y, Guo Z, Liu W. Special Superwetting Materials from Bioinspired to Intelligent Surface for On-Demand Oil/Water Separation: A Comprehensive Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204624. [PMID: 36192169 DOI: 10.1002/smll.202204624] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/24/2022] [Indexed: 05/27/2023]
Abstract
Since superwetting surfaces have emerged, on-demand oil/water separation materials serve as a new direction for meeting practical needs. This new separation mode uses a single porous material to allow oil-removing and water-removing to be achieved alternately. In this review, the fundamentals of wettability are systematically summarized in oil/water separation. Most importantly, the two states, bioinspired surface and intelligent surface, are summarized for on-demand oil/water separation. Specifically, bioinspired surfaces include micro/nanostructures, bioinspired chemistry, Janus-featured surfaces, and dual-superlyophobic surfaces that these superwetting materials can possess asymmetric wettability in one structure system or opposite underliquid wettability by prewetting. Furthermore, an intelligent surface can be adopted by various triggers such as pH, thermal and photo stimuli, etc., to control wettability for switchable oil/water separation reversibly, expressing a thought beyond nature to realize innovative oil/water separation by external stimuli. Remarkably, this review also discusses the advantages of all the materials mentioned above, expanding the separation scope from the on-demand oil/water mixtures to the multiphase immiscible liquid-liquid mixtures. Finally, the prospects of on-demand oil/water separation materials are also concluded.
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Affiliation(s)
- Yong Yang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, P. R. China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, P. R. China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
- Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Weimin Liu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
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6
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Stöbener DD, Weinhart M. "Fuzzy hair" promotes cell sheet detachment from thermoresponsive brushes already above their volume phase transition temperature. BIOMATERIALS ADVANCES 2022; 141:213101. [PMID: 36087558 DOI: 10.1016/j.bioadv.2022.213101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 08/15/2022] [Accepted: 08/29/2022] [Indexed: 12/29/2022]
Abstract
Thermoresponsive poly(glycidyl ether) (PGE) brushes have shown to be viable substrates for the culture and temperature-triggered detachment of confluent cell sheets. Surface-tethered PGEs with a cloud point temperature (TCP) around ~30 °C exhibit phase transitions well-centered within the physiological range (20-37 °C), which makes them ideal candidates for cell sheet fabrication. However, PGEs with TCPs at ~20 °C also afford the detachment of various types of cell sheets, even at room temperature (20-23 °C), i.e., above the polymers' TCPs. In this study, we investigate the phase transition of PGE brushes tethered to polystyrene (PS) culture substrates with varying grafting density and TCP to arrive at a mechanistic understanding of their functionality in cell sheet fabrication. Using quartz crystal microbalance with dissipation (QCM-D) monitoring, we demonstrate that brushes fabricated from PGEs with TCPs at ~20 °C display volume phase transition temperatures (VPTTs) well below room temperature. Although the investigated coatings obviously do not exhibit marked thermal switching in terms of brush hydration and layer thickness, their physical properties at the brush-water interface, as ascertained by QCM-D and AFM measurements, undergo subtle changes upon cooling from 37 °C to room temperature which is sufficient to promote cell sheet detachment. Thus, it appears that discreet rehydration of the outmost brush layer, resembling "fuzzy hair" at the brush-water interface, renders the surfaces less protein- and cell-adhesive at room temperature. This minor structural change of the interface allows for the reliable detachment of human dermal fibroblast sheets already at 20 °C well above the VPTT of the brushes.
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Affiliation(s)
- Daniel D Stöbener
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany; Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstr. 3A, 30167 Hannover, Germany.
| | - Marie Weinhart
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany; Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstr. 3A, 30167 Hannover, Germany.
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7
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Tanaka RI, Sakaguchi K, Yoshida A, Takahashi H, Haraguchi Y, Shimizu T. Production of scaffold-free cell-based meat using cell sheet technology. NPJ Sci Food 2022; 6:41. [PMID: 36057641 PMCID: PMC9440907 DOI: 10.1038/s41538-022-00155-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 08/09/2022] [Indexed: 12/01/2022] Open
Abstract
In the production of cell-based meat, it is desirable to reduce animal-derived materials as much as possible to meet the challenges of sustainability. Here, we demonstrate the “cell sheet-based meat”: scaffold-free cell-based meat using cell sheet technology and characterize its texture and nutrients. Bovine myoblast cell sheets were prepared using temperature-responsive culture dishes (TRCDs) and 10 stacked cell sheets to fabricate three-dimensional tissue of 1.3–2.7 mm thickness. Hardness was increased by incubation on the TRCD and was further increased by boiling as is characteristic of natural meat. The wet weight percentage of total protein in the cell sheet was about half that of beef. In this method, large-sized items of cell sheet-based meat were also created by simply scaling up the TRCD. This method promises an environment-friendly food product.
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Affiliation(s)
- Ryu-Ichiro Tanaka
- Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women's Medical University, Tokyo, Japan
| | - Katsuhisa Sakaguchi
- Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science and Engineering, TWIns, Waseda University, Tokyo, Japan.
| | - Azumi Yoshida
- Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women's Medical University, Tokyo, Japan
| | - Hironobu Takahashi
- Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuji Haraguchi
- Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women's Medical University, Tokyo, Japan
| | - Tatsuya Shimizu
- Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women's Medical University, Tokyo, Japan.
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8
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Guerron A, Phan HT, Peñaloza-Arias C, Brambilla D, Roullin VG, Giasson S. Selectively triggered cell detachment from poly(N-isopropylacrylamide) microgel functionalized substrates. Colloids Surf B Biointerfaces 2022. [DOI: 10.1016/j.colsurfb.2022.112699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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9
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Xu J, Abetz V. Synthesis of a Degradable Hydrogel Based on a Graft Copolymer with Unexpected Thermoresponsiveness. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jingcong Xu
- Institute of Physical Chemistry Universität Hamburg Grindelallee 117 Hamburg 20146 Germany
| | - Volker Abetz
- Institute of Physical Chemistry Universität Hamburg Grindelallee 117 Hamburg 20146 Germany
- Institute of Membrane Research Helmholtz‐Zentrum Hereon Max‐Planck‐Straße 1 Geesthacht 21502 Germany
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10
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Stöbener DD, Weinhart M. On the foundation of thermal "Switching": The culture substrate governs the phase transition mechanism of thermoresponsive brushes and their performance in cell sheet fabrication. Acta Biomater 2021; 136:243-253. [PMID: 34530139 DOI: 10.1016/j.actbio.2021.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/23/2021] [Accepted: 09/08/2021] [Indexed: 12/11/2022]
Abstract
Thermally "switchable" poly(glycidyl ether) (PGE) brushes constitute effective coatings for the temperature-triggered harvest of confluent cell sheets. Based on a simple "grafting-to" approach, such coatings can be tethered to various applied plastic culture substrate materials. Herein, we elucidate the self-assembly of PGE brushes with tunable grafting densities up to 0.12 and 0.22 chains nm-2 on polystyrene (PS) and tissue culture PS (TCPS), respectively. In terms of temperature-dependent wettability and protein adsorption, we found that brushes exhibit distinct grafting density-dependent properties which correlate with their cell sheet fabrication performance. In addition, temperature-ramped quartz-crystal microbalance with dissipation (QCM-D) measurements revealed marked substrate-specific PGE phase transitions which allowed us to deduce comprehensive switching mechanisms. Thus, we demonstrate that brushes tethered to hydrophilic TCPS (contact angle (CA) ∼ 60°) undergo a "cushioned" transition comprising a non-switchable, hydrated basal layer as well as a switchable top layer which regulates cell sheet detachment. In contrast, PGE brushes tethered to PS undergo a "grounded" transition which is substantially influenced by the dehydrating effect of the less hydrophilic PS substrate (CA ∼ 90°). These divergent phase transition mechanisms give rise to a broad scope in cell sheet fabrication performance, yielding staggered detachment times within a 30 min to 3 h range. Hence, we emphasize the importance of a detailed knowledge on the effect of applied culture substrates on the thermal switchability and phase transition characteristics of thermoresponsive brush coatings to accomplish an optimized design for functional cell culture dishes. STATEMENT OF SIGNIFICANCE: As the first comparative study of its kind, we elucidate the substrate-dependent thermal switchability of thermoresponsive brush coatings and evaluate their grafting density-dependent phase transition mechanism and its effect on cell sheet fabrication performance.
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11
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Xu F, Lam A, Pan Z, Randhawa G, Lamb M, Sheardown H, Hoare T. Fast Thermoresponsive Poly(oligoethylene glycol methacrylate) (POEGMA)-Based Nanostructured Hydrogels for Reversible Tuning of Cell Interactions. ACS Biomater Sci Eng 2021; 7:4258-4268. [PMID: 33570906 DOI: 10.1021/acsbiomaterials.0c01552] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reactive electrospinning is demonstrated as a viable method to create fast-responsive and degradable macroporous thermoresponsive hydrogels based on poly(oligoethylene glycol methacrylate) (POEGMA). Hydrazide- and aldehyde-functionalized POEGMA precursor polymers were coelectrospun to create hydrazone cross-linked nanostructured hydrogels in a single processing step that avoids the need for porogens, phase separation-driving additives, or scaffold postprocessing. The resulting nanostructured hydrogels can respond reversibly and repeatedly to changes in external temperature within seconds, in contrast to the minutes-to-hours response time observed with bulk hydrogels. Furthermore, nearly quantitative cell delamination can be achieved within 2 min of incubation at 4 °C, resulting in the recovery of as many or more (as well as more proliferatively active) cells from the substrate relative to the conventional trypsinization protocol. The combined macroporosity, nanoscale feature size, and interfacial switching potential of these nanostructured hydrogels thus offer promise for manipulating cell-hydrogel interactions as well as other applications in which rapid responses to external stimuli are desirable.
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Affiliation(s)
- Fei Xu
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Angus Lam
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Zhicheng Pan
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Gurpreet Randhawa
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Makenzie Lamb
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Heather Sheardown
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
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12
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Nagase K. Thermoresponsive interfaces obtained using poly(N-isopropylacrylamide)-based copolymer for bioseparation and tissue engineering applications. Adv Colloid Interface Sci 2021; 295:102487. [PMID: 34314989 DOI: 10.1016/j.cis.2021.102487] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/09/2021] [Accepted: 07/10/2021] [Indexed: 12/11/2022]
Abstract
Poly(N-isopropylacrylamide) (PNIPAAm) is the most well-known and widely used stimuli-responsive polymer in the biomedical field owing to its ability to undergo temperature-dependent hydration and dehydration with temperature variations, causing hydrophilic and hydrophobic alterations. This temperature-dependent property of PNIPAAm provides functionality to interfaces containing PNIPAAm. Notably, the hydrophilic and hydrophobic alterations caused by the change in the temperature-responsive property of PNIPAAm-modified interfaces induce temperature-modulated interactions with biomolecules, proteins, and cells. This intrinsic property of PNIPAAm can be effectively used in various biomedical applications, particularly in bioseparation and tissue engineering applications, owing to the functionality of PNIPAAm-modified interfaces based on the temperature modulation of the interaction between PNIPAAm-modified interfaces and biomolecules and cells. This review focuses on PNIPAAm-modified interfaces in terms of preparation method, properties, and their applications. Advances in PNIPAAm-modified interfaces for existing and developing applications are also summarized.
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Affiliation(s)
- Kenichi Nagase
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan.
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13
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Abstract
Radiation technology has long been proven as a simple, rapid, green and sustainable technology with macroscale applications in healthcare, industry and environment. Its merits, however, have not been fully utilized in today’s ever growing nanotechnology. Ionizing radiation has beneficial effects for the synthesis and modification of structure and properties of nanomaterials. This paper intends to update the application of ionizing radiation in the development of various nanomaterials under the categories: (i) carbon-based nanomaterials, (ii) metal-based nanomaterials, (iii) polymer-based nanomaterials, (iv) polymer nanocomposites and (v) nano-scale grafting for advanced membrane applications.
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14
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Chang D, Fan T, Gao S, Jin Y, Zhang M, Ono M. Application of mesenchymal stem cell sheet to treatment of ischemic heart disease. Stem Cell Res Ther 2021; 12:384. [PMID: 34233729 PMCID: PMC8261909 DOI: 10.1186/s13287-021-02451-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 06/07/2021] [Indexed: 12/29/2022] Open
Abstract
In recent years, mesenchymal stem cells (MSCs) have been used to improve cardiac function and attenuate adverse ventricular remodeling of the ischemic myocardium through paracrine effects and immunoregulation functions. In combination with cell sheet technology, MSCs could be more easily transplanted to the ischemic area. The long-term retention of MSCs in the affected area was realized and significantly improved the curative effect. In this review, we summarized the research and the applications of MSC sheets to the treatment of ischemic heart tissue. At present, many types of MSCs have been considered as multipotent cells in the treatment of heart failure, such as bone marrow-derived mesenchymal stem cells (BM-MSCs), adipose-derived mesenchymal stem cells (AD-MSCs), umbilical cord-derived mesenchymal stem cells (UC-MSCs), and skeletal myoblasts (SMs). Since UC-MSCs have few human leukocyte antigen-II and major histocompatibility complex class I molecules, and are easy to isolate and culture, UC-MSC sheets have been proposed as a candidate for clinical applications to ischemic heart disease.
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Affiliation(s)
- Dehua Chang
- Department of Cell Therapy in Regenerative Medicine, The University of Tokyo Hospital, 7-3-1 Honggo, Bunkyo-ku, Tokyo, 113-8655, Japan.
| | - Taibing Fan
- Children Heart Center, Fuwai Central China Cardiovascular Hospital, No.1 Fuwai Road, Zhengzhou, 450018, China
| | - Shuang Gao
- Research and Development Department, BOE Regenerative Medicine Technology Co., Ltd., NO.9 JiuXianQiao North Road, Beijing, 100015, China
| | - Yongqiang Jin
- Heart Center, First Hospital of Tsinghua University, NO.6 JiuXianQiao 1st Road, Beijing, 10016, China
| | - Mingkui Zhang
- Heart Center, First Hospital of Tsinghua University, NO.6 JiuXianQiao 1st Road, Beijing, 10016, China
| | - Minoru Ono
- Department of Cardiac Surgery, The University of Tokyo Hospital, 7-3-1 Honggo, Bunkyo-ku, Tokyo, 113-8655, Japan
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15
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Modification of polystyrene cell-culture-dish surfaces by consecutive grafting of poly(acrylamide)/poly(N-isopropylacrylamide) via reversible addition-fragmentation chain transfer-mediated polymerization. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110330] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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16
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Akiyama Y. Influence of poly( N-isopropylacrylamide) (PIPAAm) graft density on properties of PIPAAm grafted poly(dimethylsiloxane) surfaces and their stability. Heliyon 2021; 7:e06520. [PMID: 33786400 PMCID: PMC7988317 DOI: 10.1016/j.heliyon.2021.e06520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/19/2020] [Accepted: 03/11/2021] [Indexed: 11/23/2022] Open
Abstract
A previous report shows that poly(N-isopropylacrylamide) (PIPAAm) gel grafted onto poly(dimethylsiloxane) (PDMS) (PI-PDMS) surfaces with large PIPAAm graft density (Lar-PI-PDMS), is prepared by using electron beam irradiation, demonstrating that applied mechanical stretching affects properties of the Lar-PI-PDMS surface. However, the influence of PIPAAm graft density on the properties of PI-PDMS surfaces and their stability are not understood. To provide insight into these points, the properties of PI-PDMS surfaces with low PIPAAm graft density (Low-PI-PDMS) surfaces with stretched (stretch ratio = 20%) and unstretched states were examined as stretchable temperature-responsive cell culture surface using contact angle measurement and cell attachment/detachment assays, compared to those with Lar-PI-PDMS, as previously reported. Long-term contact angle measurements (61 days) for unstretched Low-PI-PDMS and Lar-PI-PDMS surfaces indicated that the cross-linked structure of the grafted PIPAAm gel suppressed hydrophobic recovery of the basal PDMS surface. The cell attachment assay revealed that the stretched Low-PI-PDMS surface was less cell adhesive than that of the unstretched Low-PI-PDMS surface despite of a larger amount of adsorbed fibronectin (FN). The lower cell adhesiveness was possibly explained by denaturation of adsorbed FN, which was induced by the strong hydrophobic property of the stretched Low-PI-PDMS surface. The cell detachment assay revealed that dual stimuli, low temperature treatment and mechanical shrinking stress applied to the stretched Low-PI-PDMS surface promoted cell detachment compared to a single stimulus, low temperature treatment or mechanical shrinking stress. These results suggested that the PIPAAm gelgrafted PDMS surface was chemically stable and did not suffer from hydrophobic recovery. External mechanical stretching stress not only strongly dehydrated grafted PIPAAm chains, but also denatured the adsorbed FN when the grafted PIPAAm layer was extremely thin, as in Low-PI-PDMS surfaces. Thus, PI-PDMS may be utilized as a stretchable temperature-responsive cell culture surface without significant hydrophobic recovery.
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Affiliation(s)
- Yoshikatsu Akiyama
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University (TWIns), 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8886, Japan
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17
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Akiyama Y. Design of Temperature-Responsive Cell Culture Surfaces for Cell Sheet Engineering. CYBORG AND BIONIC SYSTEMS 2021; 2021:5738457. [PMID: 36285144 PMCID: PMC9494729 DOI: 10.34133/2021/5738457] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/04/2021] [Indexed: 01/11/2023] Open
Abstract
Temperature-responsive cell culture surfaces, which modulate cell attachment/detachment characteristics with temperature, have been used to fabricate cell sheets. Extensive study on fabrication of cell sheet with the temperature-responsive cell culture surface, manipulation, and transplantation of the cell sheet has established the interdisciplinary field of cell sheet engineering, in which engineering, biological, and medical fields closely collaborate. Such collaboration has pioneered cell sheet engineering, making it a promising and attractive technology in tissue engineering and regenerative medicine. This review introduces concepts of cell sheet engineering, followed by designs for the fabrication of various types of temperature-responsive cell culture surfaces and technologies for cell sheet manipulation. The development of various methods for the fabrication of temperature-responsive cell culture surfaces was also summarized. The availability of cell sheet engineering for the treatment and regeneration of damaged human tissue has also been described, providing examples of the clinical application of cell sheet transplantation in humans.
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Affiliation(s)
- Y. Akiyama
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, Tokyo, Japan
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18
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Malekzadeh E, Zhang Newby BM. Thermoresponsive Poly(vinyl methyl ether) (PVME) Retained by 3-Aminopropyltriethoxysilane (APTES) Network. ACS Biomater Sci Eng 2020; 6:7051-7060. [PMID: 33320596 DOI: 10.1021/acsbiomaterials.0c01376] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermoresponsive polymers (TRP)s have been widely used for various applications from controlling membrane fouling in separation to cell/cell sheet harvesting in regenerative medicine. While poly(N-isopropylacrylamide) (pNIPAAm) is the most commonly used TRP, less expensive and easily processed poly(vinyl methyl ether) (PVME) also shows a hydrophilic to hydrophobic transition at 32-35 °C, near physiological conditions. In this study, we investigated the processing conditions for retaining a stable layer of PVME thin film on silica surfaces via entrapment in a 3-aminopropyltriethoxysilane (APTES) network. In addition, the thermoresponsive behaviors (TRB) of the retained PVME films were evaluated. Blend thin films of PVME/APTES with 90:10 and 50:50 mass ratios were spin-coated from their solutions in ethanol under ambient conditions and then annealed in a vacuum oven at 40, 60, 80, or 120 °C for 1, 2, or 3 days. The annealed films were then thoroughly rinsed with room temperature water and then soaked in water for 3 days. Our results showed that annealing at a temperature of ≥40 °C was necessary for retaining a PVME film on the surface. The higher annealing temperature led to greater film retention, probably due to the formation of a tighter APTES network. Regardless of processing conditions, all retained PVME films showed TRB, determined by water contact angles below and above the transition temperature of PVME. Additionally, particle attachment and protein adsorption on retained PVME films showed lower attachment or adsorption at room temperature as compared to that at 37 °C, and a greater difference was observed for the 90:10 blend where more PVME was consisted. Furthermore, human mesenchymal stem cells attached and proliferated on the retained PVME surfaces at 37 °C and rapidly detached at room temperature. These results illustrated the potential applications of PVME surfaces as thermoresponsive supports for low-fouling applications and noninvasive cell harvesting.
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Affiliation(s)
- Elham Malekzadeh
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, 200 East Buchtel Commons, Akron, Ohio 44325-3906, United States
| | - Bi-Min Zhang Newby
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, 200 East Buchtel Commons, Akron, Ohio 44325-3906, United States
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19
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Nagase K, Kanazawa H. Temperature-responsive chromatography for bioseparations: A review. Anal Chim Acta 2020; 1138:191-212. [DOI: 10.1016/j.aca.2020.07.075] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
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20
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Zhang Newby B, Malekzadeh E, Alghunaim A. Retention of poly(
N
‐isopropylacrylamide) thin films on polycarbonate via polymer interdiffusion. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bi‐min Zhang Newby
- Department of Chemical, Biomolecular, and Corrosion Engineering The University of Akron Akron Ohio USA
| | - Elham Malekzadeh
- Department of Chemical, Biomolecular, and Corrosion Engineering The University of Akron Akron Ohio USA
| | - Abdullah Alghunaim
- Department of Chemical, Biomolecular, and Corrosion Engineering The University of Akron Akron Ohio USA
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21
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Stöbener DD, Weinhart M. Thermoresponsive Poly(glycidyl ether) Brush Coatings on Various Tissue Culture Substrates-How Block Copolymer Design and Substrate Material Govern Self-Assembly and Phase Transition. Polymers (Basel) 2020; 12:E1899. [PMID: 32846926 PMCID: PMC7563243 DOI: 10.3390/polym12091899] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/19/2020] [Accepted: 08/22/2020] [Indexed: 01/06/2023] Open
Abstract
Thermoresponsive poly(glycidyl ether) brushes can be grafted to applied tissue culture substrates and used for the fabrication of primary human cell sheets. The self-assembly of such brushes is achieved via the directed physical adsorption and subsequent UV immobilization of block copolymers equipped with a short, photo-reactive benzophenone-based anchor block. Depending on the chemistry and hydrophobicity of the benzophenone anchor, we demonstrate that such block copolymers exhibit distinct thermoresponsive properties and aggregation behaviors in water. Independent on the block copolymer composition, we developed a versatile grafting-to process which allows the fabrication of poly(glycidyl ether) brushes on various tissue culture substrates from dilute aqueous-ethanolic solution. The viability of this process crucially depends on the chemistry and hydrophobicity of, both, benzophenone-based anchor block and substrate material. Utilizing these insights, we were able to manufacture thermoresponsive poly(glycidyl ether) brushes on moderately hydrophobic polystyrene and polycarbonate as well as on rather hydrophilic polyethylene terephthalate and tissue culture-treated polystyrene substrates. We further show that the temperature-dependent switchability of the brush coatings is not only dependent on the cloud point temperature of the block copolymers, but also markedly governed by the hydrophobicity of the surface-bound benzophenone anchor and the subjacent substrate material. Our findings demonstrate that the design of amphiphilic thermoresponsive block copolymers is crucial for their phase transition characteristics in solution and on surfaces.
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Affiliation(s)
- Daniel David Stöbener
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstr. 3A, 30167 Hannover, Germany;
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Marie Weinhart
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstr. 3A, 30167 Hannover, Germany;
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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22
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Poly(2-oxazoline) Matrices with Temperature-Dependent Solubility-Interactions with Water and Use for Cell Culture. MATERIALS 2020; 13:ma13122702. [PMID: 32545841 PMCID: PMC7344873 DOI: 10.3390/ma13122702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 12/22/2022]
Abstract
In this work, we studied the stability of matrices with temperature-dependent solubility and their interactions with water at physiological temperature for their application in cell culture in vitro. Gradient copolymers of 2-isopropyl- with 2-n-propyl-2-oxazoline (P(iPrOx-nPrOx)) were used to prepare the matrices. The comonomer ratio during polymerization was chosen such that the cloud point temperature (TCP) of the copolymer was below 37 °C while the glass transition (Tg) was above 37 °C. The role of the support for matrices in the context of their stability in aqueous solution was examined. Therefore, matrices in the form of both self-supported bulk polymer materials (fibrillar mats and molds) and polymer films supported on the silica slides were examined. All of the matrices remained undissolved when incubated in water at a temperature above TCP. For the self-supported mats and molds, we observed the loss of shape stability, but, in the case of films supported on silica slides, only slight changes in morphology were observed. For a more in-depth investigation of the origin of the shape deformation of self-supported matrices, we analyzed the wettability, thickness, and water uptake of films on silica support because the matrices remained undeformed under these conditions. It was found that, above the TCP of P(iPrOx-nPrOx), the wettability of the films decreased, but at the same time the films absorbed water and swelled. We examined how this specific behavior of the supported films influenced the culture of fibroblasts. The temperature-dependent solubility of the matrices and the possibility of noninvasive cell separation were also examined.
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23
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Poly(N-isopropylacrylamide) based thin microgel films for use in cell culture applications. Sci Rep 2020; 10:6126. [PMID: 32273560 PMCID: PMC7145875 DOI: 10.1038/s41598-020-63228-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 03/20/2020] [Indexed: 12/28/2022] Open
Abstract
Poly(N-isopropylacrylamide) (PNIPAm) is widely used to fabricate cell sheet surfaces for cell culturing, however copolymer and interpenetrated polymer networks based on PNIPAm have been rarely explored in the context of tissue engineering. Many complex and expensive techniques have been employed to produce PNIPAm-based films for cell culturing. Among them, spin coating has demonstrated to be a rapid fabrication process of thin layers with high reproducibility and uniformity. In this study, we introduce an innovative approach to produce anchored smart thin films both thermo- and electro-responsive, with the aim to integrate them in electronic devices and better control or mimic different environments for cells in vitro. Thin films were obtained by spin coating of colloidal solutions made by PNIPAm and PAAc nanogels. Anchoring the films to the substrates was obtained through heat treatment in the presence of dithiol molecules. From analyses carried out with AFM and XPS, the final samples exhibited a flat morphology and high stability to water washing. Viability tests with cells were finally carried out to demonstrate that this approach may represent a promising route to integrate those hydrogels films in electronic platforms for cell culture applications.
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24
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Gong L, Liu D, Fan T, Qin J, Li J, Zhang Q, Wu Z, Fan Z, Liu Q. Surface Modification of PTLG Terpolymer Using PNIPAAm and Its Cell Adhesion/Detachment Behavior. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Li Gong
- Fudan University Shanghai 200433 P. R. China
| | | | | | - Jingwen Qin
- Tongji University School of Medicine Shanghai 200092 P. R. China
| | - Jiafeng Li
- Fudan University Shanghai 200433 P. R. China
| | - Qin Zhang
- Fudan University Shanghai 200433 P. R. China
| | - Zeng Wu
- Fudan University Shanghai 200433 P. R. China
| | | | - Qing Liu
- Tongji University School of Medicine Shanghai 200092 P. R. China
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25
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Lian J, Xu H, Duan S, Ding X, Hu Y, Zhao N, Ding X, Xu FJ. Tunable Adhesion of Different Cell Types Modulated by Thermoresponsive Polymer Brush Thickness. Biomacromolecules 2019; 21:732-742. [DOI: 10.1021/acs.biomac.9b01437] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jiamin Lian
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
| | - Haifeng Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
| | - Shun Duan
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
| | - Xuejia Ding
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
| | - Yang Hu
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
| | - Nana Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
| | - Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing 100029, China
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26
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Graphene Oxide Nanosheet-Composited Poly(N-isopropylacrylamide) Hydrogel for Cell Sheet Recovery. Macromol Res 2019. [DOI: 10.1007/s13233-019-7099-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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27
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Kobayashi J, Okano T. Design of Temperature-Responsive Polymer-Grafted Surfaces for Cell Sheet Preparation and Manipulation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180378] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jun Kobayashi
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, TWIns, 8-1 Kawadacho, Shinjuku-ku, Tokyo 162-8666, Japan
- Cell Sheet Tissue Engineering Center and Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, 30 South 2000 East, Salt Lake City, Utah 84112, USA
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28
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Thermally-triggered fabrication of cell sheets for tissue engineering and regenerative medicine. Adv Drug Deliv Rev 2019; 138:276-292. [PMID: 30639258 DOI: 10.1016/j.addr.2019.01.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 12/24/2018] [Accepted: 01/04/2019] [Indexed: 12/13/2022]
Abstract
Cell transplantation is a promising approach for promoting tissue regeneration in the treatment of damaged tissues or organs. Although cells have conventionally been delivered by direct injection to damaged tissues, cell injection has limited efficiency to deliver therapeutic cells to the target sites. Progress in tissue engineering has moved scaffold-based cell/tissue delivery into the mainstream of tissue regeneration. A variety of scaffolds can be fabricated from natural or synthetic polymers to provide the appropriate culture conditions for cell growth and achieve in-vitro tissue formation. Tissue engineering has now become the primary approach for cell-based therapies. However, there are still serious limitations, particularly for engineering of cell-dense tissues. "Cell sheet engineering" is a scaffold-free tissue technology that holds even greater promise in the field of tissue engineering and regenerative medicine. Thermoresponsive poly(N-isopropylacrylamide)-grafted surfaces allow the fabrication of a tissue-like cell monolayer, a "cell sheet", and efficiently delivers this cell-dense tissue to damaged sites without the use of scaffolds. At present, this unique approach has been applied to human clinical studies in regenerative medicine. Furthermore, this thermally triggered cell manipulation system allows us to produce various types of 3D tissue models not only for regenerative medicine but also for tissue modeling, which can be used for drug discovery. Here, new cell sheet-based technologies are described including vascularization for scaled-up 3D tissue constructs, induced pluripotent stem (iPS) cell technology for human cell sheet fabrication and microfabrication for arranging tissue microstructures, all of which are expected to produce more complex tissues based on cell sheet tissue engineering.
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29
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Jiang S, Lyu B, Müller M, Wesner D, Schönherr H. Thickness-Encoded Micropatterns in One-Component Thermoresponsive Polymer Brushes for Culture and Triggered Release of Pancreatic Tumor Cell Monolayers and Spheroids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14670-14677. [PMID: 30474988 DOI: 10.1021/acs.langmuir.8b03040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fabrication, characterization, and application of micropatterned one-component poly(di(ethylene glycol)methyl ether methacrylate) (PDEGMA) brushes for monolayer cell and spheroid culture and temperature-triggered release are reported. Micropatterns of various shapes and sizes were designed to possess a unique functionality imparted by thermoresponsive thin PDEGMA patches, which are cell adhesive at 37 °C, embedded in a much thicker cell-resistant PDEGMA matrix that does not exhibit measurable thermoresponsive properties. Depending on the cell seeding density, PaTu 8988t human pancreatic tumor cells or spheroids were cultured area-selectively, confined by the 40 ± 4 nm thick passivating PDEGMA matrix, and could be released on demand by a mild thermally triggered brush swelling in the 5 ± 1 nm thin regions. As shown by surface plasmon resonance (SPR) measurements, in contrast to the thinner brushes, the thicker brushes exhibited virtually no fibronectin adhesive properties at 37 °C, whereas at 25 °C, both areas showed similar protein resistant behavior. The quasi-2D thickness-encoded micropatterns were shown to be useful templates for the growth of 3D multicellular aggregates. Thermally induced release after 5 days of incubation afforded 3D cell spheroids comprising up to 99% viable cells demonstrating that the system can be used as a 3D spheroid in vitro model for basic tumor research and anticancer drug screenings.
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Affiliation(s)
- Siyu Jiang
- Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), Physical Chemistry I , University of Siegen , Adolf-Reichwein-Street 2 , 57076 Siegen , Germany
| | - Beier Lyu
- Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), Physical Chemistry I , University of Siegen , Adolf-Reichwein-Street 2 , 57076 Siegen , Germany
| | - Mareike Müller
- Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), Physical Chemistry I , University of Siegen , Adolf-Reichwein-Street 2 , 57076 Siegen , Germany
| | - Daniel Wesner
- Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), Physical Chemistry I , University of Siegen , Adolf-Reichwein-Street 2 , 57076 Siegen , Germany
| | - Holger Schönherr
- Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), Physical Chemistry I , University of Siegen , Adolf-Reichwein-Street 2 , 57076 Siegen , Germany
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30
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Stöbener DD, Hoppensack A, Scholz J, Weinhart M. Endothelial, smooth muscle and fibroblast cell sheet fabrication from self-assembled thermoresponsive poly(glycidyl ether) brushes. SOFT MATTER 2018; 14:8333-8343. [PMID: 30298896 DOI: 10.1039/c8sm01099d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, we introduce a platform to fabricate human dermal fibroblast (HDF), human aortic smooth muscle cell (HAoSMC) and human umbilical vein endothelial cell (HUVEC) sheets using thermoresponsive poly(glycidyl ether) coatings. Copolymer brushes based on glycidyl methyl ether (GME) and ethyl glycidyl ether (EGE) were self-assembled onto polystyrene (PS) culture substrates via the physical adsorption of a hydrophobic, photoreactive benzophenone anchor block based on the monomer 4-[2-(2,3-epoxypropoxy)ethoxy]benzophenone (EEBP). The directed self-assembly of well-defined, end-tethered poly(GME-ran-EGE)-block-poly(EEBP) (PGE) brushes was achieved via the selective, EEBP-driven adsorption of the asymmetric block copolymer from dilute aqueous solution below its cloud point temperature (CPT). Subsequently, the PGE brush layers were covalently immobilized onto the PS surfaces by irradiation with UV light and characterized by ellipsometry, static water contact angle (CA) measurements and atomic force microscopy (AFM). We found that, by decreasing the temperature from 37 to 20 °C, the coatings undergo a pancake-to-brush transition, which triggers cell sheet detachment. In addition, cell culture parameters were optimized to allow proper adhesion and controlled detachment of confluent HDF, HAoSMC and HUVEC sheets, which can be applied in vascular tissue engineering.
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Affiliation(s)
- Daniel David Stöbener
- Institute for Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, D-14195 Berlin, Germany.
| | - Anke Hoppensack
- Institute for Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, D-14195 Berlin, Germany.
| | - Johanna Scholz
- Institute for Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, D-14195 Berlin, Germany.
| | - Marie Weinhart
- Institute for Chemistry and Biochemistry, Freie Universitaet Berlin, Takustr. 3, D-14195 Berlin, Germany.
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31
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Akiyama Y, Matsuyama M, Yamato M, Takeda N, Okano T. Poly( N-isopropylacrylamide)-Grafted Polydimethylsiloxane Substrate for Controlling Cell Adhesion and Detachment by Dual Stimulation of Temperature and Mechanical Stress. Biomacromolecules 2018; 19:4014-4022. [PMID: 30185026 DOI: 10.1021/acs.biomac.8b00992] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stretchable temperature-responsive cell culture surfaces composed of poly( N-isopropylacrylamide) (PIPAAm) gel-grafted polydimethylsiloxane (PIPAAm-PDMS) were prepared to demonstrate that dual stimulation of temperature and mechanical stress extensively altered graft polymer thickness, surface wettability, and cell detachment behavior. The PIPAAm-PDMS surface was hydrophilic and hydrophobic below and above the lower critical solution temperature, respectively, which was ascribed to the phase transition of PIPAAm chains. When uniaxial stretching was applied, the grafted PIPAAm gel surface was modulated to be more hydrophobic as shown by an increase in the contact angle. Atomic force microscopy observation revealed that uniaxial stretching made the grafted gel layer thinner and deformed the nanoscale aggregates of the grafted PIPAAm gel, implying extension of the PIPAAm chains. The stretched PIPAAm-PDMS became more cell adhesive than the unstretched PIPAAm-PDMS at 37 °C. Furthermore, dual stimulation, shrinking the already stretched PIPAAm-PDMS and decreasing the temperature, induced more rapid cell detachment than only a change in temperature did. Similarly, upon comparison with a single stimulation of a change in temperature or mechanical stress, dual stimulation accelerated cell sheet detachment and harvesting. This new stretchable and temperature-responsive culture surface can easily adjust the surface property to a different cell adhesiveness by appropriately combining each stimulus and enable the fabrication of cell sheets of various species.
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Affiliation(s)
- Yoshikatsu Akiyama
- Institute of Advanced Biomedical Engineering and Science , Tokyo Women's Medical University (TWIns) , 8-1 Kawada-cho , Shinjuku-ku, Tokyo 162-8886 , Japan
| | - Miki Matsuyama
- Institute of Advanced Biomedical Engineering and Science , Tokyo Women's Medical University (TWIns) , 8-1 Kawada-cho , Shinjuku-ku, Tokyo 162-8886 , Japan.,Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering , Waseda University (TWIns) , 2-2 Wakamatsu-cho , Shinjuku-ku, Tokyo 162-8480 , Japan
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science , Tokyo Women's Medical University (TWIns) , 8-1 Kawada-cho , Shinjuku-ku, Tokyo 162-8886 , Japan
| | - Naoya Takeda
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering , Waseda University (TWIns) , 2-2 Wakamatsu-cho , Shinjuku-ku, Tokyo 162-8480 , Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science , Tokyo Women's Medical University (TWIns) , 8-1 Kawada-cho , Shinjuku-ku, Tokyo 162-8886 , Japan
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Exploring the anomalous cytotoxicity of commercially-available poly( N-isopropyl acrylamide) substrates. Biointerphases 2018; 13:06D406. [PMID: 30231617 DOI: 10.1116/1.5045142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Poly(N-isopropyl acrylamide) (pNIPAM) is a stimulus-responsive polymer that has been of great interest to the bioengineering community. When the temperature is lowered below its lower critical solution temperature (∼32 °C), pNIPAM rapidly hydrates, and adherent cells detach as intact cell sheets. This cell-releasing behavior in a physiologically relevant temperature range has led to NIPAM's use for engineered tissues and other devices. In a previous study, however, the authors found that although most techniques used to polymerize NIPAM yield biocompatible films, some formulations from commercially-available NIPAM (cpNIPAM) can be cytotoxic. In this work, the authors investigate the reasons underlying this anomaly. The authors evaluated the response of a variety of cell types (e.g., bovine aortic endothelial cells, BAECs; monkey kidney epithelial cells, Vero cells; and mouse embryonic fibroblasts, 3T3s) after culture on substrates spin-coated with sol-gel (spNIPAM) and commercially-prepared (cpNIPAM). The relative biocompatibility of each cell type was evaluated using observations of its cell morphology and function (e.g., XTT and Live/Dead assays) after 48 and 96 h in culture. In addition, the substrates themselves were analyzed using NMR, goniometry, and XPS. The authors find that all the cell types were compromised by 96 h in culture with cpNIPAM, although the manner in which the cells are compromised differs; in particular, while Vero and 3T3 cells appear to be undergoing cytotoxic death, BAECs undergo apoptic death. The authors believe that this result is due to a combination of factors, including the presence of short chain oligomers of NIPAM in the commercially-available preparation. This work will provide valuable insights into the cytotoxicity of commercially-prepared polymer substrates for this type of bioengineering work and therefore into the applicability of cells grown on such surfaces for human subjects.
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Kobayashi J, Arisaka Y, Yui N, Akiyama Y, Yamato M, Okano T. Effect of Temperature Changes on Serum Protein Adsorption on Thermoresponsive Cell-Culture Surfaces Monitored by A Quartz Crystal Microbalance with Dissipation. Int J Mol Sci 2018; 19:E1516. [PMID: 29783706 PMCID: PMC5983614 DOI: 10.3390/ijms19051516] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/15/2018] [Accepted: 05/16/2018] [Indexed: 01/12/2023] Open
Abstract
Thermoresponsive cell-culture polystyrene (PS) surfaces that are grafted with poly(N-isopropylacrylamide) (PIPAAm) facilitate the cultivation of cells at 37 °C and the detachment of cultured cells as a sheet with an underlying extracellular matrix (ECM) by reducing the temperature. However, the ECM and cell detachment mechanisms are still unclear because the detachment of cells from thermoresponsive surfaces is governed by complex interactions among the cells/ECM/surface. To explore the dynamic behavior of serum protein adsorption/desorption, thermoresponsive surfaces that correspond to thermoresponsive tissue-culture PS dishes were formed on sensor chips for quartz crystal microbalance with dissipation (QCM-D) measurements. X-ray photoelectron spectroscopy (XPS) measurements and temperature-dependent frequency and dissipation shifts, Δf and ΔD, using QCM-D revealed that the thermoresponsive polymers were successfully grafted onto oxidized, thin PS films on the surfaces of the sensor chips. Increased amounts of adsorbed bovine serum albumin (BSA) and fibronectin (FN) were observed on the thermoresponsive polymer-grafted surfaces at 37 °C when compared with those at 20 °C because of enhanced hydrophobic interactions with the hydrophobic, thermoresponsive surface. While the calculated masses of adsorbed BSA and FN using QCM-D were 3⁻5 times more than those that were obtained from radiolabeling, the values were utilized for relative comparisons among the same substrate. More importantly, the thermoresponsive, dynamic behavior of serum protein adsorption/desorption was monitored using the QCM-D technique. Observations of this dynamic behavior revealed that the BSA and FN that were adsorbed at 37 °C remained on both surfaces after decreasing the temperature to 20 °C.
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Affiliation(s)
- Jun Kobayashi
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University (TWIns), 8-1 Kawadacho, Shinjuku-ku, Tokyo 162-8666, Japan.
| | - Yoshinori Arisaka
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
| | - Nobuhiko Yui
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
| | - Yoshikatsu Akiyama
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University (TWIns), 8-1 Kawadacho, Shinjuku-ku, Tokyo 162-8666, Japan.
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University (TWIns), 8-1 Kawadacho, Shinjuku-ku, Tokyo 162-8666, Japan.
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University (TWIns), 8-1 Kawadacho, Shinjuku-ku, Tokyo 162-8666, Japan.
- Cell Sheet Tissue Engineering Center and Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, 30 South 2000 East, Salt Lake City, UT 84112, USA.
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34
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Avadanei M. Photografted polymeric networks based on N
-isopropylacrylamide: Depth profiling by infrared spectroscopy. J Appl Polym Sci 2018. [DOI: 10.1002/app.46048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mihaela Avadanei
- “P.Poni” Institute of Macromolecular Chemistry; 41A Gr. Ghica Voda Alley 700487 Iasi, Romania
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35
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Sudo Y, Kawai R, Sakai H, Kikuchi R, Nabae Y, Hayakawa T, Kakimoto MA. Star-Shaped Thermoresponsive Polymers with Various Functional Groups for Cell Sheet Engineering. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:653-662. [PMID: 29257892 DOI: 10.1021/acs.langmuir.7b04213] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study demonstrates the facile preparation of poly(N-isopropylacrylamide) (PNIPAM)-immobilized Petri dishes by drop-casting a star-shaped copolymer of hyperbranched polystyrene (HBPS) possessing PNIPAM arms (HBPS-g-PNIPAM) functionalized with polar groups. HBPS was synthesized via reversible addition-fragmentation chain transfer (RAFT) self-condensing vinyl polymerization (SCVP), and HBPS polymers with different terminal structures were prepared by changing the monomer structure. HBPS-g-PNIPAM was synthesized by the grafting of PNIPAM from each terminal of HBPS. To tune the cell adhesion and detachment properties, polar functional groups such as carboxylic acid and dimethylamino groups were introduced to HBPS-g-PNIPAM. Based on surface characterization using scanning transmission electron microscopy (STEM), X-ray photoelectron spectroscopy (XPS), and contact angle measurements, the advantage of the hyperbranched structure for the PNIPAM immobilization was evident in terms of the uniformity, stability, and thermoresponsiveness. Successful cell sheet harvesting was demonstrated on dishes coated with HBPS-g-PNIPAM. In addition, the cell adhesion and detachment properties could be tuned by the introduction of polar functional groups.
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Affiliation(s)
- Yu Sudo
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 S8-26, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Ryuki Kawai
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 S8-26, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hideaki Sakai
- Zellech Inc. , Studio3 10F, KFC-Bldg., 1-6-1, Yokoami, Sumida-ku, Tokyo 130-0015, Japan
| | - Ryohei Kikuchi
- Ookayama Materials Analysis Division, Technical Department, Tokyo Institute of Technology , 2-12-1 S7-26, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yuta Nabae
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 S8-26, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Teruaki Hayakawa
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 S8-26, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Masa-Aki Kakimoto
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 S8-26, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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36
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AKIYAMA Y, OKANO T. Temperature-Responsive Cell Culture Surface for Cell-Sheet Tissue Engineering and Its Design to Express Temperature-Dependent Cell Attachment/Detachment Character. KOBUNSHI RONBUNSHU 2018. [DOI: 10.1295/koron.2017-0078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yoshikatsu AKIYAMA
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University
| | - Teruo OKANO
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University
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Design of Temperature-Responsive Cell Culture Surfaces for Cell Sheet-Based Regenerative Therapy and 3D Tissue Fabrication. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1078:371-393. [PMID: 30357633 DOI: 10.1007/978-981-13-0950-2_19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This chapter describes the concept of "cell sheet engineering" for the creation of transplantable cellular tissues and organs. In contrast to scaffold-based tissue engineering, cell sheet engineering facilitates the reconstruction of scaffold-free, cell-dense tissues. Cell sheets were harvested by changing the temperature of thermoresponsive cell culture surfaces modified with poly(N-isopropylacrylamide) (PIPAAm) with a thickness on the nanometer scale. The transplantation of 2D cell sheet tissues has been used in clinical settings. Although 3D tissues were formed simply by layering 2D cell sheets, issues related to vascularization within 3D tissues and the large-scale production of cells must be addressed to create thick and large 3D tissues and organs.
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38
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Ko YG, Kim YJ, Park WH, Cho D, Chung HY, Kwon OH. Surface modification of PHBV nanofiber mats for rapid cell cultivation and harvesting. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 29:1026-1041. [PMID: 29212419 DOI: 10.1080/09205063.2017.1414481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
To maintain the original function of a specific tissue for therapeutic tissue engineering, an advanced cell culture surface for repeat cell proliferation is necessary. We designed a novel cell proliferation and rapid harvesting surface by combining nonwoven nanofiber mat and a thermo-responsive polymer. Nanofibrous poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) mats were fabricated by the electrospinning technique. A poly(N-isopropylacrylamide) (PNIPAM) thermo-responsive layer was grafted on the PHBV nanofiber mat by electron beam irradiation. The average diameter of the PNIPAM-grafted PHBV nanofibers was determined by SEM. ATR-FTIR and ESCA were used to confirm the grafting of PNIPAM onto the PHBV nanofiber surface. Water contact angles on the mats were measured in response to temperature changes. Human adipose-derived stem cells (ADSCs) were cultured on the PNIPAM-grafted PHBV nanofiber mat to investigate cell proliferation, harvesting, and functionality during repeat subculture. Detached ADSCs from each surface by low temperature treatment and trypsin-EDTA were compared by a fluorescence-activated cell sorter (FACS) using expression of stem cell membrane-specific markers such as CD-13 PE, CD-29 PE, and CD-90 FITC. The mass cultivation and intact harvesting of stem cells by low temperature treatment using a thermo-responsive PHBV nanofiber mat is a promising technique for use in regenerative medicine and stem cell therapy.
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Affiliation(s)
- Young-Gwang Ko
- a Department of Polymer Science and Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Young-Jin Kim
- a Department of Polymer Science and Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Won Ho Park
- b Department of Advanced Organic Materials and Textile System Engineering , Chungnam National University , Daejeon , Korea
| | - Donghwan Cho
- a Department of Polymer Science and Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Ho Yun Chung
- c Department of Plastic and Reconstructive Surgery, School of Medicine , Kyungpook National University , Daegu , Korea
| | - Oh Hyeong Kwon
- a Department of Polymer Science and Engineering , Kumoh National Institute of Technology , Gumi , Korea
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Nagase K, Yamato M, Kanazawa H, Okano T. Poly(N-isopropylacrylamide)-based thermoresponsive surfaces provide new types of biomedical applications. Biomaterials 2017; 153:27-48. [PMID: 29096399 DOI: 10.1016/j.biomaterials.2017.10.026] [Citation(s) in RCA: 228] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/12/2017] [Accepted: 10/15/2017] [Indexed: 02/06/2023]
Abstract
Thermoresponsive surfaces, prepared by grafting of poly(N-isopropylacrylamide) (PIPAAm) or its copolymers, have been investigated for biomedical applications. Thermoresponsive cell culture dishes that show controlled cell adhesion and detachment following external temperature changes, represent a promising application of thermoresponsive surfaces. These dishes can be used to fabricate cell sheets, which are currently used as effective therapies for patients. Thermoresponsive microcarriers for large-scale cell cultivation have also been developed by taking advantage of the thermally modulated cell adhesion and detachment properties of thermoresponsive surfaces. Furthermore, thermoresponsive bioseparation systems using thermoresponsive surfaces for separating and purifying pharmaceutical proteins and therapeutic cells have been developed, with the separation systems able to maintain their activity and biological potency throughout the procedure. These applications of thermoresponsive surfaces have been improved with progress in preparation techniques of thermoresponsive surfaces, such as polymerization methods, and surface modification techniques. In the present review, the various types of PIPAAm-based thermoresponsive surfaces are summarized by describing their preparation methods, properties, and successful biomedical applications.
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Affiliation(s)
- Kenichi Nagase
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan; Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan.
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan
| | - Hideko Kanazawa
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan; Cell Sheet Tissue Engineering Center (CSTEC) and Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, 30 South 2000 East, Salt Lake City, Utah 84112, USA.
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40
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Heinen S, Cuéllar-Camacho JL, Weinhart M. Thermoresponsive poly(glycidyl ether) brushes on gold: Surface engineering parameters and their implication for cell sheet fabrication. Acta Biomater 2017. [PMID: 28647625 DOI: 10.1016/j.actbio.2017.06.029] [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] [Indexed: 01/12/2023]
Abstract
Thermoresponsive polymer coatings, optimized for cell adhesion and thermally-triggered cell detachment, allow the fabrication of confluent cell sheets with intact extracellular matrix. However, rational design guidelines for such coatings are rare, since temperature-triggered cell adhesion and detachment from thermoresponsive surfaces are mechanistically not well understood. Herein, we investigated the impact of molecular weight (2, 9, 24kDa), grafting density (0.04-1.4 chains nm-2), morphology, and roughness of well-characterized thermoresponsive poly(glycidyl ether) brushes on the cell response at 37 and 20°C. NIH 3T3 mouse fibroblasts served as a model cell line for adhesion, proliferation, and cell sheet detachment. The cell response was correlated with serum protein adsorption from cell culture medium containing 10% fetal bovine serum. Intact cell sheets could be harvested from all the studied poly(glycidyl ether) coated surfaces, irrespective of the molecular weight, provided that the morphology of the coating was homogenous and the surface was fully shielded by the hydrated brush. The degree of chain overlap was estimated by the ratio of twice the polymer's Flory radius in a theta solvent to its interchain distance, which should be located in the strongly overlapping brush regime (2 Rf/l>1.4). In contrast, dense PNIPAM (2.5kDa) control monolayers did not induce protein adsorption from cell culture medium at 37°C and, as a result, did not allow a significant cell adhesion. These structural design parameters of functional poly(glycidyl ether) coatings on gold will contribute to future engineering of these thermoresponsive coatings on more common, cell culture relevant substrates. STATEMENT OF SIGNIFICANCE Cell sheet engineering as a scaffold-free approach towards tissue engineering resembles a milestone in regenerative medicine. The fabrication of confluent cell sheets maintains the extracellular matrix of cells which serves as the physiological cell scaffold. Thermoresponsive poly(glycidyl ether)s are highly cell-compatible and brushes thereof promote cell adhesion and growth without modification with additional cell adhesive ligands. Thus, a direct correlation of temperature-dependent serum protein adsorption and cell response with surface design parameters such as grafting density and molecular weight became accessible. Hence, surface engineering parameters of well-defined poly(glycidyl ether) monolayers for reproducible cell sheet fabrication have been identified. These design guidelines may also prove beneficial in the development of other brush-like thermoresponsive coatings for cell sheet engineering.
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41
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Rennert K, Nitschke M, Wallert M, Keune N, Raasch M, Lorkowski S, Mosig AS. Thermo-responsive cell culture carrier: Effects on macrophage functionality and detachment efficiency. J Tissue Eng 2017; 8:2041731417726428. [PMID: 28890781 PMCID: PMC5574476 DOI: 10.1177/2041731417726428] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 07/25/2017] [Indexed: 12/31/2022] Open
Abstract
Harvesting cultivated macrophages for tissue engineering purposes by enzymatic digestion of cell adhesion molecules can potentially result in unintended activation, altered function, or behavior of these cells. Thermo-responsive polymer is a promising tool that allows for gentle macrophage detachment without artificial activation prior to subculture within engineered tissue constructs. We therefore characterized different species of thermo-responsive polymers for their suitability as cell substrate and to mediate gentle macrophage detachment by temperature shift. Primary human monocyte- and THP-1-derived macrophages were cultured on thermo-responsive polymers and characterized for phagocytosis and cytokine secretion in response to lipopolysaccharide stimulation. We found that both cell types differentially respond in dependence of culture and stimulation on thermo-responsive polymers. In contrast to THP-1 macrophages, primary monocyte-derived macrophages showed no signs of impaired viability, artificial activation, or altered functionality due to culture on thermo-responsive polymers compared to conventional cell culture. Our study demonstrates that along with commercially available UpCell carriers, two other thermo-responsive polymers based on poly(vinyl methyl ether) blends are attractive candidates for differentiation and gentle detachment of primary monocyte-derived macrophages. In summary, we observed similar functionality and viability of primary monocyte-derived macrophages cultured on thermo-responsive polymers compared to standard cell culture surfaces. While this first generation of custom-made thermo-responsive polymers does not yet outperform standard culture approaches, our results are very promising and provide the basis for exploiting the unique advantages offered by custom-made thermo-responsive polymers to further improve macrophage culture and recovery in the future, including the covalent binding of signaling molecules and the reduction of centrifugation and washing steps. Optimizing these and other benefits of thermo-responsive polymers could greatly improve the culture of macrophages for tissue engineering applications.
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Affiliation(s)
- Knut Rennert
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany.,Institute of Biochemistry II, Jena University Hospital, Germany
| | - Mirko Nitschke
- Leibniz Institute of Polymer Research Dresden, Institute of Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials Dresden, Dresden, Germany
| | - Maria Wallert
- Department of Nutritional Biochemistry and Physiology, Institute of Nutrition, Friedrich Schiller University Jena, Jena, Germany
| | - Natalie Keune
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Martin Raasch
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Stefan Lorkowski
- Department of Nutritional Biochemistry and Physiology, Institute of Nutrition, Friedrich Schiller University Jena, Jena, Germany.,Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Germany
| | - Alexander S Mosig
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany.,Institute of Biochemistry II, Jena University Hospital, Germany
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42
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Stöbener DD, Uckert M, Cuellar-Camacho JL, Hoppensack A, Weinhart M. Ultrathin Poly(glycidyl ether) Coatings on Polystyrene for Temperature-Triggered Human Dermal Fibroblast Sheet Fabrication. ACS Biomater Sci Eng 2017; 3:2155-2165. [DOI: 10.1021/acsbiomaterials.7b00270] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Daniel David Stöbener
- Institute of Chemistry and
Biochemistry, Freie Universitaet Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Melanie Uckert
- Institute of Chemistry and
Biochemistry, Freie Universitaet Berlin, Takustr. 3, 14195 Berlin, Germany
| | - José Luis Cuellar-Camacho
- Institute of Chemistry and
Biochemistry, Freie Universitaet Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Anke Hoppensack
- Institute of Chemistry and
Biochemistry, Freie Universitaet Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Marie Weinhart
- Institute of Chemistry and
Biochemistry, Freie Universitaet Berlin, Takustr. 3, 14195 Berlin, Germany
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Nagase K, Nagumo Y, Kim M, Kim HJ, Kyung HW, Chung HJ, Sekine H, Shimizu T, Kanazawa H, Okano T, Lee SJ, Yamato M. Local Release of VEGF Using Fiber Mats Enables Effective Transplantation of Layered Cardiomyocyte Sheets. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201700073] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/24/2017] [Indexed: 01/20/2023]
Affiliation(s)
- Kenichi Nagase
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University (TWIns); 8-1 Kawadacho Shinjuku Tokyo 162-8666 Japan
- Faculty of Pharmacy; Keio University; 1-5-30 Shibakoen Minato Tokyo 105-8512 Japan
| | - Yuhei Nagumo
- Faculty of Pharmacy; Keio University; 1-5-30 Shibakoen Minato Tokyo 105-8512 Japan
| | - Miri Kim
- Department of Pharmacy; College of Pharmacy; Graduate School of Pharmaceutical Sciences; Ewha Womans University; 11-1 Daehyun-dong Seodaemun-gu Seoul 120-750 Republic of Korea
| | - Hee-Jung Kim
- Department of Pharmacy; College of Pharmacy; Graduate School of Pharmaceutical Sciences; Ewha Womans University; 11-1 Daehyun-dong Seodaemun-gu Seoul 120-750 Republic of Korea
| | - Hei-Won Kyung
- Department of Pharmacy; College of Pharmacy; Graduate School of Pharmaceutical Sciences; Ewha Womans University; 11-1 Daehyun-dong Seodaemun-gu Seoul 120-750 Republic of Korea
| | - Hye-Jin Chung
- Department of Pharmacy; College of Pharmacy; Graduate School of Pharmaceutical Sciences; Ewha Womans University; 11-1 Daehyun-dong Seodaemun-gu Seoul 120-750 Republic of Korea
| | - Hidekazu Sekine
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University (TWIns); 8-1 Kawadacho Shinjuku Tokyo 162-8666 Japan
| | - Tatsuya Shimizu
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University (TWIns); 8-1 Kawadacho Shinjuku Tokyo 162-8666 Japan
| | - Hideko Kanazawa
- Faculty of Pharmacy; Keio University; 1-5-30 Shibakoen Minato Tokyo 105-8512 Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University (TWIns); 8-1 Kawadacho Shinjuku Tokyo 162-8666 Japan
| | - Seung-Jin Lee
- Department of Pharmacy; College of Pharmacy; Graduate School of Pharmaceutical Sciences; Ewha Womans University; 11-1 Daehyun-dong Seodaemun-gu Seoul 120-750 Republic of Korea
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University (TWIns); 8-1 Kawadacho Shinjuku Tokyo 162-8666 Japan
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Lei Z, Zhang G, Deng Y, Wang C. Thermoresponsive Melamine Sponges with Switchable Wettability by Interface-Initiated Atom Transfer Radical Polymerization for Oil/Water Separation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8967-8974. [PMID: 28229584 DOI: 10.1021/acsami.6b14565] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Here we have obtained a temperature responsive melamine sponge with a controllable wettability between superhydrophilicity and superhydrophobicity by grafting the octadecyltrichlorosilane and thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) onto the surface of melamine sponge skeletons. The whole process included the silanization in which step the rough surface with low surface energy and the NH2 were provided, and the atom transfer radical polymerization which ensured the successful grafting of PNIPAAm onto the skeleton's surface. The product exhibits a good reversible switch between superhydrophilicity and superhydrophobicity by changing the temperature below or above the lower critical solution temperature (LCST, about 32 °C) of PNIPAAm, and the modified sponge still retains a good responsiveness after undergoing two temperature switches for 20 cycles. Simultaneously, the functionalized sponges could be used to absorb the oil under water at 37 °C, and they released the absorbed oil in various ways under water at 20 °C, showing wide potential applications including oil/water separation.
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Affiliation(s)
- Zhiwen Lei
- Research Institute of Materials Science, South China University of Technology , Guangzhou 510640, China
| | - Guangzhao Zhang
- Research Institute of Materials Science, South China University of Technology , Guangzhou 510640, China
| | - Yonghong Deng
- Department of Materials Science and Engineering, South University of Science and Technology of China , Shenzhen 518055, China
| | - Chaoyang Wang
- Research Institute of Materials Science, South China University of Technology , Guangzhou 510640, China
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Bluestein BM, Reed JA, Canavan HE. Effect of substrate storage conditions on the stability of "Smart" films used for mammalian cell applications. APPLIED SURFACE SCIENCE 2017; 392:950-959. [PMID: 29081564 PMCID: PMC5658134 DOI: 10.1016/j.apsusc.2016.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
When poly(N-isopropyl acrylamide) (pNIPAM) is tethered to a surface, it can induce the spontaneous release of a sheet of mammalian cells. The release of cells is a result of the reversible phase transition the polymer undergoes at its lower critical solution temperature (LCST). Many techniques are used for the deposition of pNIPAM onto cell culture substrates. Previously, we compared two methods of deposition (plasma polymerization, and co-deposition with a sol-gel). We proved that although both were technically appropriate for obtaining thermoresponsive pNIPAM films, the surfaces that were co-deposited with a sol-gel caused some disruption in cell activity. The variation of cell behavior could be due to the delamination of pNIPAM films leaching toxic chemicals into solution. In this work, we assessed the stability of these pNIPAM films by manipulating the storage conditions and analyzing the surface chemistry using X-ray photoelectron spectroscopy (XPS) and contact angle measurements over the amount of time required to obtain confluent cell sheets. From XPS, we demonstrated that ppNIPAM (plasma polymerized NIPAM) films remains stable across all storage conditions while sol-gel deposition show large deviations after 48 h of storage. Cell response of the deposited films was assessed by investigating the cytotoxicity and biocompatibility. The 37°C and high humidity storage affects sol-gel deposited films, inhibiting normal cell growth and proper thermoresponse of the film. Surface chemistry, thermoresponse and cell growth remained similar for all ppNIPAM surfaces, indicating these substrates are more appropriate for mammalian cell culture applications.
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Affiliation(s)
- Blake M. Bluestein
- Center for Biomedical Engineering, Department of Chemical and Biological Engineering, University of New Mexico, United States
| | - Jamie A. Reed
- Center for Biomedical Engineering, Department of Chemical and Biological Engineering, University of New Mexico, United States
| | - Heather E. Canavan
- Center for Biomedical Engineering, Department of Chemical and Biological Engineering, University of New Mexico, United States
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Abstract
AbstractVery high energies of particulate (accelerated electrons, swift heavy ions) or electromagnetic wave (γ-, X-rays) radiation can be used to initiate free radical based reactions in solids, liquids or gases. Because of non-selectivity of absorption of X-rays, γ rays and accelerated electrons in matter free radicals are generated homogeneously in the bulk material. These free radicals on the polymers or monomers are used extensively in the synthesis and modification of polymeric materials. The unique properties of ionizing radiation make it a very useful tool in the top-down and bottom-up synthesis of nanomaterials. In this article the utilization of ionizing radiation in the form of swift heavy ions, accelerated electrons, X- and γ rays will be described for development of advanced materials by radiation-induced grafting in nanoscale, synthesis of polymeric nanoparticles, radiation-assisted synthesis of nanogels and nanocomposites. The properties difficult to be attained by other techniques will be described by giving examples for the cases of ion track-etched membranes, fuel cell membranes, sensors, detectors, cell culture media, polymer thin films embedded with metal nanoparticles, polymer/clay nanocomposites with a prospect for the future outlook.
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Affiliation(s)
- Olgun Güven
- 1Hacettepe University, Department of Chemistry, Beytepe, 06800, Ankara, Turkey, www.polymer.hacettepe.edu.tr
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Dzhoyashvili NA, Thompson K, Gorelov AV, Rochev YA. Film Thickness Determines Cell Growth and Cell Sheet Detachment from Spin-Coated Poly(N-Isopropylacrylamide) Substrates. ACS APPLIED MATERIALS & INTERFACES 2016; 8:27564-27572. [PMID: 27661256 DOI: 10.1021/acsami.6b09711] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Poly(N-isopropylacrylamide) (pNIPAm) is widely used to fabricate thermoresponsive surfaces for cell sheet detachment. Many complex and expensive techniques have been employed to produce pNIPAm substrates for cell culture. The spin-coating technique allows rapid fabrication of pNIPAm substrates with high reproducibility and uniformity. In this study, the dynamics of cell attachment, proliferation, and function on non-cross-linked spin-coated pNIPAm films of different thicknesses were investigated. The measurements of advancing contact angle revealed increasing contact angles with increasing film thickness. Results suggest that more hydrophilic 50 and 80 nm thin pNIPAm films are more preferable for cell sheet fabrication, whereas more hydrophobic 300 and 900 nm thick spin-coated pNIPAm films impede cell attachment. These changes in cell behavior were correlated with changes in thickness and hydration of pNIPAm films. The control of pNIPAm film thickness using the spin-coating technique offers an effective tool for cell sheet-based tissue engineering.
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Affiliation(s)
| | | | - Alexander V Gorelov
- School of Chemistry and Chemical Biology, University College Dublin , D04 R7R0, Belfield, Dublin 4, Ireland
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Science , 142290 Pushchino, Moscow Region, Russia
| | - Yuri A Rochev
- Sechenov First Moscow State Medical University , Institute for Regenerative Medicine, 119991 Moscow, Russia
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Sudo Y, Sakai H, Nabae Y, Hayakawa T, Kakimoto MA. Role of hyperbranched polystyrene on thermo-responsive cell culture dishes prepared by hyperbranched polystyrene-g-poly(N-isopropylacrylamide). POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Sakuma M, Kumashiro Y, Nakayama M, Tanaka N, Haraguchi Y, Umemura K, Shimizu T, Yamato M, Okano T. Preparation of Thermoresponsive Nanostructured Surfaces for Tissue Engineering. J Vis Exp 2016:e53465. [PMID: 26967769 DOI: 10.3791/53465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Thermoresponsive poly(N-isopropylacrylamide) (PIPAAm)-immobilized surfaces for controlling cell adhesion and detachment were fabricated by the Langmuir-Schaefer method. Amphiphilic block copolymers composed of polystyrene and PIPAAm (St-IPAAms) were synthesized by reversible addition-fragmentation chain transfer (RAFT) radical polymerization. A chloroform solution of St-IPAAm molecules was gently dropped into a Langmuir-trough apparatus, and both barriers of the apparatus were moved horizontally to compress the film to regulate its density. Then, the St-IPAAm Langmuir film was horizontally transferred onto a hydrophobically modified glass substrate by a surface-fixed device. Atomic force microscopy images clearly revealed nanoscale sea-island structures on the surface. The strength, rate, and quality of cell adhesion and detachment on the prepared surface were modulated by changes in temperature across the lower critical solution temperature range of PIPAAm molecules. In addition, a two-dimensional cell structure (cell sheet) was successfully recovered on the optimized surfaces. These unique PIPAAm surfaces may be useful for controlling the strength of cell adhesion and detachment.
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Affiliation(s)
| | - Yoshikazu Kumashiro
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University;
| | - Masamichi Nakayama
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University
| | - Nobuyuki Tanaka
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University
| | - Yuji Haraguchi
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University
| | | | - Tatsuya Shimizu
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University;
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Torres-Rendon JG, Köpf M, Gehlen D, Blaeser A, Fischer H, Laporte LD, Walther A. Cellulose Nanofibril Hydrogel Tubes as Sacrificial Templates for Freestanding Tubular Cell Constructs. Biomacromolecules 2016; 17:905-13. [DOI: 10.1021/acs.biomac.5b01593] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Marius Köpf
- Dental
Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - David Gehlen
- DWI − Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074 Aachen, Germany
| | - Andreas Blaeser
- Dental
Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Horst Fischer
- Dental
Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Laura De Laporte
- DWI − Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074 Aachen, Germany
| | - Andreas Walther
- DWI − Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074 Aachen, Germany
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