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Hu D, Gao C, Li J, Tong P, Sun Y. The preparation methods and types of cell sheets engineering. Stem Cell Res Ther 2024; 15:326. [PMID: 39334404 PMCID: PMC11438047 DOI: 10.1186/s13287-024-03937-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Accepted: 09/12/2024] [Indexed: 09/30/2024] Open
Abstract
Cell therapy has emerged as a viable approach for treating damaged organs or tissues, particularly with advancements in stem cell research and regenerative medicine. The innovative technique of cell sheet engineering offers the potential to create a cell-dense lamellar structure that preserves the extracellular matrix (ECM) secreted by cells, along with the cell-matrix and intercellular junctions formed during in vitro cultivation. In recent years, significant progress has been made in developing cell sheet engineering technology. A variety of novel materials and methods were utilized for enzyme-free cell detachment during the cell sheet formation process. The complexity of cell sheet structures increased to meet advanced usage demands. This review aims to provide an overview of the preparation methods and types of cell sheets, thereby enhancing the understanding of this rapidly evolving technology and offering a fresh perspective on the development and future application of cell sheet engineering.
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Affiliation(s)
- Danping Hu
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
- Hangzhou Chexmed Technology Co., Ltd, Hangzhou, China
| | - Ce Gao
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
| | - Jie Li
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China
| | - Pei Tong
- Hunan Guangxiu Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Yi Sun
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, China.
- National Engineering and Research Center of Human Stem Cells, Changsha, China.
- Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, China.
- Hunan Guangxiu Affiliated Hospital of Hunan Normal University, Changsha, China.
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2
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Yang L, Sun L, Sun Y, Qiu G, Fan X, Sun Q, Lu G. Engineering Thermoresponsive Poly( N-isopropylacrylamide)-Based Films with Enhanced Stability and Reusability for Efficient Bone Marrow Mesenchymal Stem Cell Culture and Harvesting. Molecules 2024; 29:4481. [PMID: 39339476 PMCID: PMC11435103 DOI: 10.3390/molecules29184481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Revised: 09/16/2024] [Accepted: 09/19/2024] [Indexed: 09/30/2024] Open
Abstract
Poly(N-isopropylacrylamide) (PNIPAM) offers a promising platform for non-invasive and gentle cell detachment. However, conventional PNIPAM-based substrates often suffer from limitations including limited stability and reduced reusability, which hinder their widespread adoption in biomedical applications. In this study, PNIPAM copolymer films were formed on the surfaces of glass slides or silicon wafers using a two-step film-forming method involving coating and grafting. Subsequently, a comprehensive analysis of the films' surface wettability, topography, and thickness was conducted using a variety of techniques, including contact angle analysis, atomic force microscopy (AFM), and ellipsometric measurements. Bone marrow mesenchymal stem cells (BMMSCs) were then seeded onto PNIPAM copolymer films prepared from different copolymer solution concentrations, ranging from 0.2 to 10 mg·mL-1, to select the optimal culture substrate that allowed for good cell growth at 37 °C and effective cell detachment through temperature reduction. Furthermore, the stability and reusability of the optimal copolymer films were assessed. Finally, AFM and X-ray photoelectron spectroscopy (XPS) were employed to examine the surface morphology and elemental composition of the copolymer films after two rounds of BMMSC adhesion and detachment. The findings revealed that the surface properties and overall characteristics of PNIPAM copolymer films varied significantly with the solution concentration. Based on the selection criteria, the copolymer films derived from 1 mg·mL-1 solution were identified as the optimal culture substrates for BMMSCs. After two rounds of cellular adhesion and detachment, some proteins remained on the film surfaces, acting as a foundation for subsequent cellular re-adhesion and growth, thereby implicitly corroborating the practicability and reusability of the copolymer films. This study not only introduces a stable and efficient platform for stem cell culture and harvesting but also represents a significant advance in the fabrication of smart materials tailored for biomedical applications.
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Affiliation(s)
- Lei Yang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Luqiao Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Yuanyuan Sun
- College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
| | - Guangwei Qiu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Xiaoguang Fan
- College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
| | - Qing Sun
- College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
| | - Guang Lu
- School of Civil Engineering, Liaoning Petrochemical University, Fushun 113001, China
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Jiang S, Yang S, Lei W, Liu Z, Schönherr H. Boosting the Cell Harvesting Performance of Poly(di(ethylene glycol)methyl ether methacrylate) Cell Release Layers via Copolymerization of Photo- and Thermoresponsive Monomers. Macromol Biosci 2024:e2400249. [PMID: 39052359 DOI: 10.1002/mabi.202400249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/13/2024] [Indexed: 07/27/2024]
Abstract
The performance of the cell-selective thermoresponsive poly(di(ethylene glycol)methyl ether methacrylate) (PDEGMA) cell harvest system is shown to be drastically enhanced by exploiting the combination of photoresponsive spiropyran derivates and PDEGMA in copolymerized brushes. The analysis of copolymerized 1'-(2-methacryloxyethyl)-3',3'-dimethyl-6-nitrospiro(2H-1-benzopyran-2,2'-indoline) (SPMA) (DEMGA) di(ethylene glycol)methyl ether methacrylate brushes revealed that a minor adjustment of the SPMA/DEGMA ratios results in a significant alternation of wettability as well as protein adsorption, when switching the temperature from 37 to 22 °C and alternately irradiating using different light wavelengths (from 530 to 365 nm). Thin P(SPMA-co-DEGMA) layers supported pancreatic tumor PaTu 8988t cells with high cell viability. Copolymer layers with 2.5% SPMA/DEGMA led to the highest efficiency of enzyme-free cell release with very good cell viability. The release is induced by cooling the cell culture medium to 22 °C and irradiating the surface with 365 nm light. Compared to neat PDEGMA, the P(SPMA-co-DEGMA) layers showed a threefold increase in the speed of the change of cell morphology of the attached cells and a >5 times increased fraction of detached cells, which underlines the potential of these dual responsive PDEGMA systems for optimized performance in the facile capture, culture, and release of different cell lines.
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Affiliation(s)
- Siyu Jiang
- Department of Bioengineering, School of Environmental and Chemical Engineering, Yanshan University, No.438 Hebei Street, Qinhuangdao, 066004, China
- Nano-biotechnology Key Lab of Hebei Province, Yanshan University, No.438 Hebei Street, 066004, Qinhuangdao, China
| | - Sijia Yang
- Department of Bioengineering, School of Environmental and Chemical Engineering, Yanshan University, No.438 Hebei Street, Qinhuangdao, 066004, China
| | - Wenwei Lei
- Nano-biotechnology Key Lab of Hebei Province, Yanshan University, No.438 Hebei Street, 066004, Qinhuangdao, China
| | - Zhiwei Liu
- Nano-biotechnology Key Lab of Hebei Province, Yanshan University, No.438 Hebei Street, 066004, Qinhuangdao, China
| | - Holger Schönherr
- Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and (Bio)Technology (Cµ), Physical Chemistry I, University of Siegen, Adolf-Reichwein-Str. 2, 57076, Siegen, Germany
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4
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Li Y, Deng T, Aili D, Chen Y, Zhu W, Liu Q. Cell Sheet Technology: An Emerging Approach for Tendon and Ligament Tissue Engineering. Ann Biomed Eng 2024; 52:141-152. [PMID: 37731091 DOI: 10.1007/s10439-023-03370-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/09/2023] [Indexed: 09/22/2023]
Abstract
Tendon and ligament injuries account for a substantial proportion of disorders in the musculoskeletal system. While non-operative and operative treatment strategies have advanced, the restoration of native tendon and ligament structures after injury is still challenging due to its innate limited regenerative ability. Cell sheet technology is an innovative tool for tissue fabrication and cell transplantation in regenerative medicine. In this review, we first summarize different harvesting procedures and advantages of cell sheet technology, which preserves intact cell-to-cell connections and extracellular matrix. We then describe the recent progress of cell sheet technology from preclinical studies, focusing on the application of stem cell-derived sheets in treating tendon and ligament injuries, as well as highlighting its effects on mitigating inflammation and promoting tendon/graft-bone interface healing. Finally, we discuss several prerequisites for future clinical translation including the selection of appropriate cell source, optimization of preparation process, establishment of suitable animal model, and the fabrication of vascularized complex tissue. We believe this review could potentially provoke new ideas and drive the development of more functional biomimetic tissues using cell sheet technology to meet the needs of clinical patients.
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Affiliation(s)
- Yexin Li
- Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, People's Republic of China
| | - Ting Deng
- Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, People's Republic of China
| | - Dilihumaer Aili
- Department of Orthopedic Surgery, Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University, Ürümqi, People's Republic of China
| | - Yang Chen
- Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, People's Republic of China
| | - Weihong Zhu
- Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, People's Republic of China
| | - Qian Liu
- Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, People's Republic of China.
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Mori K, Kataoka K, Akiyama Y, Asahi T. Covalent Immobilization of Collagen Type I to a Polydimethylsiloxane Surface for Preventing Cell Detachment by Retaining Collagen Molecules under Uniaxial Cyclic Mechanical Stretching Stress. Biomacromolecules 2023; 24:5035-5045. [PMID: 37800307 DOI: 10.1021/acs.biomac.3c00669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Surface modification of polydimethylsiloxane (PDMS) with an extracellular matrix (ECM) is useful for enhancing stable cell attachment. However, few studies have investigated the correlation between the stability of deposited ECM and cell behavior on the PDMS surfaces in external stretched cell culture systems. Herein, covalent collagen type I (Col)-immobilized PDMS surfaces were fabricated using 3-aminopropyl-trimethoxysilane, glutaraldehyde, and Col molecules. The immobilized collagen molecules on the PDMS surface were more stable and uniform than the physisorbed collagen. The cells stably adhered to the Col-immobilized surface and proliferated even under uniaxial cyclic mechanical stretching stress (UnCyMSt), whereas the cells gradually detached from the Col-physisorbed PDMS surface, accompanied by a decrease in the number of deposited collagen molecules. Moreover, the immobilization of collagen molecules enhanced cell alignment under the UnCyMSt. This study reveals that cell adhesion, proliferation, and alignment under the UnCyMSt can be attributed to the retention of collagen molecules on the PDMS surface.
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Affiliation(s)
- Kazuaki Mori
- Graduate School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan
| | - Kosuke Kataoka
- Comprehensive Research Organization, Waseda University, 513 Waseda-tsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
| | - Yoshikatsu Akiyama
- Tokyo Women's Medical University, TWIns, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Toru Asahi
- Graduate School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan
- Comprehensive Research Organization, Waseda University, 513 Waseda-tsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
- Research Organization for Nano & Life Innovation, Waseda University, 513 Waseda-tsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
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6
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Constantinou I, Bastounis EE. Cell-stretching devices: advances and challenges in biomedical research and live-cell imaging. Trends Biotechnol 2023; 41:939-950. [PMID: 36604290 DOI: 10.1016/j.tibtech.2022.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/29/2022] [Accepted: 12/09/2022] [Indexed: 01/04/2023]
Abstract
Basic human functions such as breathing and digestion require mechanical stretching of cells and tissues. However, when it comes to laboratory experiments, the mechanical stretching that cells experience in the body is not often replicated, limiting the biomimetic nature of the studies and the relevance of results. Herein, we establish the importance of mechanical stretching during in vitro investigations by reviewing seminal works performed using cell-stretching platforms, highlighting important outcomes of these works as well as the engineering characteristics of the platforms used. Emphasis is placed on the compatibility of cell-stretching devices (CSDs) with live-cell imaging as well as their limitations and on the research advancements that could arise from live-cell imaging performed during cell stretching.
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Affiliation(s)
- Iordania Constantinou
- Institute of Microtechnology (IMT), Technische Universität Braunschweig, Alte Salzdahlumer Str. 203, 38124 Braunschweig, Germany; Center of Pharmaceutical Engineering (PVZ), Technische Universität Braunschweig, Franz-Liszt-Str. 35a, 38106 Braunschweig, Germany.
| | - Effie E Bastounis
- Institute of Microbiology and Infection Medicine (IMIT), Eberhard Karls University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; Cluster of Excellence "Controlling Microbes to Fight Infections" EXC 2124, Eberhard Karls University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany.
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7
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McLoughlin S, McKenna AR, Fisher JP. Fabrication Strategies for Engineered Thin Membranous Tissues. ACS APPLIED BIO MATERIALS 2023. [PMID: 37314953 DOI: 10.1021/acsabm.3c00133] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Thin membranous tissues (TMTs) are anatomical structures consisting of multiple stratified cell layers, each less than 100 μm in thickness. While these tissues are small in scale, they play critical roles in normal tissue function and healing. Examples of TMTs include the tympanic membrane, cornea, periosteum, and epidermis. Damage to these structures can be caused by trauma or congenital disabilities, resulting in hearing loss, blindness, dysfunctional bone development, and impaired wound repair, respectively. While autologous and allogeneic tissue sources for these membranes exist, they are significantly limited by availability and patient complications. Tissue engineering has therefore become a popular strategy for TMT replacement. However, due to their complex microscale architecture, TMTs are often difficult to replicate in a biomimetic manner. The critical challenge in TMT fabrication is balancing fine resolution with the ability to mimic complex target tissue anatomy. This Review reports existing TMT fabrication strategies, their resolution and material capabilities, cell and tissue response, and the advantages and disadvantages of each technique.
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Affiliation(s)
- Shannon McLoughlin
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
- Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, United States
| | - Abigail Ruth McKenna
- Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, United States
- Department of Biology, University of Maryland, College Park, Maryland 20742, United States
| | - John P Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
- Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, United States
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8
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Bauman L, Zhao B. Multi-thermo responsive double network composite hydrogel for 3D printing medical hydrogel mask. J Colloid Interface Sci 2023; 638:882-892. [PMID: 36796134 DOI: 10.1016/j.jcis.2023.02.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 01/24/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023]
Abstract
3D printing of multifunctional hydrogels offers great opportunities for developing innovative biomedical technologies as it can provide custom-designed shapes and structures conformal to arbitrary contours. There have been significant improvements of the 3D printing techniques, but the available printable hydrogel materials limit the progress. Here, we investigated the use of a poloxamer diacrylate (Pluronic P123) to augment the thermo-responsive network composed of poly(N-isopropylacrylamide) and develop a multi-thermoresponsive hydrogel for photopolymerization 3D printing. The hydrogel precursor resin was synthesised to be printable with high-fidelity of fine structures and once cured can form a robust thermo-responsive hydrogel. By utilizing N-isopropyl acrylamide monomer and a Pluronic P123 diacrylate crosslinker as 2 separate thermo-responsive components it was found that the final hydrogel displayed 2 distinct lower critical solution temperature (LCST) switches. This enables the loading of hydrophilic drugs at fridge temperature and improving the strength of the hydrogel at room temperature while still maintaining a drug release at body temperature. The thermo-responsive material properties of this multifunctional hydrogel material system were investigated, showing a significant promise as a medical hydrogel mask. Furthermore, it is demonstrated that it can be printed in sizes large enough to fit and adhere to a human face at 1:1 scale with high dimensional accuracy, as well as its ability to load with hydrophilic drugs.
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Affiliation(s)
- Lukas Bauman
- Surface Science and Bio-nanomaterials Laboratory, Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre for Bioengineering and Biotechnology, Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Boxin Zhao
- Surface Science and Bio-nanomaterials Laboratory, Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre for Bioengineering and Biotechnology, Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
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9
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Smart surface-based cell sheet engineering for regenerative medicine. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Qi J, Chen Y, Xu L, Huang HD, Zhong GJ, Lin H, Li ZM. Highly Transparent, Self-Reinforced, and Hydrophobic Cellulose Acetate Films Fabricated Based on Thermal Stretching and Surface Engineering. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Qi
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Yuan Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Ling Xu
- School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, P. R. China
| | - Hua-Dong Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Gan-Ji Zhong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Hao Lin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
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Darge HF, Lin YH, Hsieh-Chih T, Lin SY, Yang MC. Thermo/redox-responsive dissolvable gelatin-based microsphere for efficient cell harvesting during 3D cell culturing. BIOMATERIALS ADVANCES 2022; 139:213008. [PMID: 35882154 DOI: 10.1016/j.bioadv.2022.213008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/21/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
The use of microspheres for culturing adherent cells has been proven as an important method, allowing for obtaining adequate number of cells in limited space and volume of medium for the intended cell-based medical applications. However, the use of proteolytic enzymes for cell harvesting from the microsphere resulted in cell damage and loss of functionality. Therefore, in this study, we developed a novel redox/thermo-responsive dissolvable gelatin-based microsphere for successful cell proliferation and harvesting adequate high-quality cells using non-enzymatic cell detachment methods. Initially, a redox-induced dissolvable gelatin-based microsphere was successfully prepared using disulfide bonds as crosslinking agent, firmly stabilizing gelatin networks and forming a stable microsphere at physiological temperature. The optimized concentration of the crosslinking agent was 1.2 mM, which kept the microsphere stable for >120 h. The microsphere was then coated with PNIPAm-ALA copolymer via physical or chemical means, resulting in a positively charged thermosensitive surface. The positive charge derived from ALA in PNIPAm-ALA copolymer enhanced cell attachment, while the thermosensitive property of the copolymer enabled for temperature induced cell harvesting. When the temperature dropped below the LCST value of PNIPAm-ALA5 (33.4°C), the copolymer swelled and became more hydrophilic, allowing cells to be readily separated. The addition of reducing agents such as GSH, DTT and L-cysteine resulted in further cleavage of the disulfide bond in the microsphere and dissolution of the microsphere for complete cell detachment. Interestingly, cell attachment and proliferation were enhanced on microspheres coated with PNIPAm-ALA5 using diselenide as a crosslinking agent, and complete cell detachment was occurred within 15 min after adding 25 mM DTT followed by lowering the temperature (4°C). Therefore, the microsphere fabricated in this study was worthwhile for non-enzymatic cell detachment and has the potential to be used for cell expansion and harvesting adequate live cells of high quality and functionality for tissue engineering or cell therapy.
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Affiliation(s)
- Haile F Darge
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan; Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei, Taiwan; College of Medicine and Health Science, Bahir Dar University, Bahir Dar, Ethiopia
| | - Yu-Hsuan Lin
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Tsai Hsieh-Chih
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan; Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei, Taiwan; R&D Center for Membrane Technology, Chung Yuan Christian University, Taoyuan, Taiwan.
| | - Shuian-Yin Lin
- Biomedical Technology and Device Research Center, Industrial Technology Research Institute, Hsinchu, Taiwan.
| | - Ming-Chien Yang
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan.
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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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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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14
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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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15
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Bauman L, Wen Q, Sameoto D, Yap CH, Zhao B. Durable poly(N-isopropylacrylamide) grafted PDMS micropillared surfaces for temperature-modulated wetting. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125901] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Imashiro C, Shimizu T. Fundamental Technologies and Recent Advances of Cell-Sheet-Based Tissue Engineering. Int J Mol Sci 2021; 22:E425. [PMID: 33401626 PMCID: PMC7795487 DOI: 10.3390/ijms22010425] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/26/2020] [Accepted: 12/27/2020] [Indexed: 12/13/2022] Open
Abstract
Tissue engineering has attracted significant attention since the 1980s, and the applications of tissue engineering have been expanding. To produce a cell-dense tissue, cell sheet technology has been studied as a promising strategy. Fundamental techniques involving tissue engineering are mainly introduced in this review. First, the technologies to fabricate a cell sheet were reviewed. Although temperature-responsive polymer-based technique was a trigger to establish and spread cell sheet technology, other methodologies for cell sheet fabrication have also been reported. Second, the methods to improve the function of the cell sheet were investigated. Adding electrical and mechanical stimulation on muscle-type cells, building 3D structures, and co-culturing with other cell species can be possible strategies for imitating the physiological situation under in vitro conditions, resulting in improved functions. Finally, culture methods to promote vasculogenesis in the layered cell sheets were introduced with in vivo, ex vivo, and in vitro bioreactors. We believe the present review that shows and compares the fundamental technologies and recent advances for cell-sheet-based tissue engineering should promote further development of tissue engineering. The development of cell sheet technology should promote many bioengineering applications.
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Affiliation(s)
| | - Tatsuya Shimizu
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, Tokyo 162-8666, Japan;
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17
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Moghaddam SZ, Thormann E. Surface forces and friction tuned by thermo-responsive polymer films. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2019.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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Jiang P, Ji H, Li G, Chen S, Lv L. Structure formation in pH-sensitive micro porous membrane from well-defined ethyl cellulose-g-PDEAEMA via non-solvent-induced phase separation process. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1722691] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Ping Jiang
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, P. R. China
| | - Hongmin Ji
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, P. R. China
| | - Gen Li
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, P. R. China
| | - Shaowei Chen
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, P. R. China
| | - Linda Lv
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, P. R. China
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19
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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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Sung TC, Yang JS, Yeh CC, Liu YC, Jiang YP, Lu MW, Ling QD, Kumar SS, Chang Y, Umezawa A, Chen H, Higuchi A. The design of a thermoresponsive surface for the continuous culture of human pluripotent stem cells. Biomaterials 2019; 221:119411. [PMID: 31419657 DOI: 10.1016/j.biomaterials.2019.119411] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/02/2019] [Accepted: 08/03/2019] [Indexed: 01/06/2023]
Abstract
Commonly, stem cell culture is based on batch-type culture, which is laborious and expensive. We continuously cultured human pluripotent stem cells (hPSCs) on thermoresponsive dish surfaces, where hPSCs were partially detached on the same thermoresponsive dish by decreasing the temperature of the thermoresponsive dish to be below the lower critical solution temperature for only 30 min. Then, the remaining cells were continuously cultured in fresh culture medium, and the detached stem cells were harvested in the exchanged culture medium. hPSCs were continuously cultured for ten cycles on the thermoresponsive dish surface, which was prepared by coating the surface with poly(N-isopropylacrylamide-co-styrene) and oligovitronectin-grafted poly(acrylic acid-co-styrene) or recombinant vitronectin for hPSC binding sites to maintain hPSC pluripotency. After ten cycles of continuous culture on the thermoresponsive dish surface, the detached cells expressed pluripotency proteins and had the ability to differentiate into cells derived from the three germ layers in vitro and in vivo. Furthermore, the detached cells differentiated into specific cell lineages, such as cardiomyocytes, with high efficiency.
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Affiliation(s)
- Tzu-Cheng Sung
- School of Biomedical Engineering, The Eye Hospital of Wenzhou Medical University, No. 270, Xueyuan Road, Wenzhou, Zhejiang, 325027, China; Department of Chemical and Materials Engineering, National Central University, No. 300, Jhongda RD., Jhongli, Taoyuan, 32001, Taiwan
| | - Jia-Sin Yang
- Department of Chemical and Materials Engineering, National Central University, No. 300, Jhongda RD., Jhongli, Taoyuan, 32001, Taiwan
| | - Chih-Chen Yeh
- Department of Chemical Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan, 320, Taiwan
| | - Ya-Chu Liu
- Department of Chemical and Materials Engineering, National Central University, No. 300, Jhongda RD., Jhongli, Taoyuan, 32001, Taiwan
| | - Yi-Peng Jiang
- Department of Chemical and Materials Engineering, National Central University, No. 300, Jhongda RD., Jhongli, Taoyuan, 32001, Taiwan
| | - Ming-Wei Lu
- Department of Chemical and Materials Engineering, National Central University, No. 300, Jhongda RD., Jhongli, Taoyuan, 32001, Taiwan
| | - Qing-Dong Ling
- Cathay Medical Research Institute, Cathay General Hospital, No. 32, Ln 160, Jian-Cheng Road, Hsi-Chi City, Taipei, 221, Taiwan; Institute of Systems Biology and Bioinformatics, National Central University, No. 300, Jhongda RD., Jhongli, Taoyuan, 32001, Taiwan
| | - S Suresh Kumar
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Yung Chang
- Department of Chemical Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan, 320, Taiwan.
| | - Akihiro Umezawa
- Department of Reproduction, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Hao Chen
- School of Biomedical Engineering, The Eye Hospital of Wenzhou Medical University, No. 270, Xueyuan Road, Wenzhou, Zhejiang, 325027, China; Wenzhou Institute, University of Chinese Academy of Science, No. 16, Xinsan Road, Hi-tech Industry Park, Wenzhou, Zhejiang, China
| | - Akon Higuchi
- School of Biomedical Engineering, The Eye Hospital of Wenzhou Medical University, No. 270, Xueyuan Road, Wenzhou, Zhejiang, 325027, China; Department of Chemical and Materials Engineering, National Central University, No. 300, Jhongda RD., Jhongli, Taoyuan, 32001, Taiwan; Department of Reproduction, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan; Wenzhou Institute, University of Chinese Academy of Science, No. 16, Xinsan Road, Hi-tech Industry Park, Wenzhou, Zhejiang, China; Center for Emergent Matter Science, Riken, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
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21
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Nam K, Kim K, Dean SM, Brown CT, Davis RS, Okano T, Baker OJ. Using cell sheets to regenerate mouse submandibular glands. NPJ Regen Med 2019; 4:16. [PMID: 31285850 PMCID: PMC6609686 DOI: 10.1038/s41536-019-0078-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 06/14/2019] [Indexed: 12/13/2022] Open
Abstract
Temperature-responsive polymer grafted tissue culture dishes release cells as confluent living sheets in response to small changes in temperature, with recovered cell sheets retaining cell-cell communications, functional extracellular matrices and tissue-like behaviors. These features promote tissue regeneration and improve transplantation efficacy in various tissues including cartilage, heart, kidney, liver, endometrium, cornea, middle ear, periodontium, and esophageal living sheet transplants. However, the functional effects of cell sheets for salivary gland regeneration to treat hyposalivation have not yet been studied. Thus, the present study aims to both establish the viability of thermoresponsive cell sheets for use in salivary glands and then explore the delivery option (i.e., single vs. multiple layers) that would result in the most complete tissue growth in terms of cell differentiation and recovered tissue integrity. Results indicate that single cell sheets form polarized structures that maintain cell-cell junctions and secretory granules in vitro while layering of two-single cell sheets forms a glandular-like pattern in vitro. Moreover, double layer cell sheets enhance tissue formation, cell differentiation and saliva secretion in vivo. In contrast, single cell sheets demonstrated only modest gains relative to the robust growth seen with the double layer variety. Together, these data verify the utility of thermoresponsive cell sheets for use in salivary glands and indicates the double layer form to provide the best option in terms of cell differentiation and recovered tissue integrity, thereby offering a potential new therapeutic strategy for treating hyposalivation.
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Affiliation(s)
- Kihoon Nam
- School of Dentistry, The University of Utah, Salt Lake City, UT USA
| | - Kyungsook Kim
- Cell Sheet Tissue Engineering Center (CSTEC), Department of Pharmaceutics and Pharmaceutical Chemistry, The University of Utah, Salt Lake City, UT USA
| | - Spencer M. Dean
- School of Dentistry, The University of Utah, Salt Lake City, UT USA
| | - Callie T. Brown
- School of Dentistry, The University of Utah, Salt Lake City, UT USA
| | - Ryan S. Davis
- School of Dentistry, The University of Utah, Salt Lake City, UT USA
| | - Teruo Okano
- Cell Sheet Tissue Engineering Center (CSTEC), Department of Pharmaceutics and Pharmaceutical Chemistry, The University of Utah, Salt Lake City, UT USA
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, Tokyo, Japan
| | - Olga J. Baker
- School of Dentistry, The University of Utah, Salt Lake City, UT USA
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22
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Zhu X, Duan X, Bai T, Zhang X, Wang T, Cao T, Fan X. Synthesis of Novel pH-Tunable Thermoresponsive Hydroxyl-Terminated Hyperbranched Polyether. Polymers (Basel) 2019; 11:E895. [PMID: 31100869 PMCID: PMC6572042 DOI: 10.3390/polym11050895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/09/2019] [Accepted: 05/14/2019] [Indexed: 11/22/2022] Open
Abstract
In this study, a new pH-tunable thermoresponsive hydroxyl-terminated hyperbranched polyether (HTHP 2) was successfully prepared via a one-pot cationic polymerization technique and postmodification. In the first step, hydroxyl-terminated hyperbranched polyether containing double bonds (HTHP 1) were synthesized. Then, through thiol-ene "click" reaction, pH-responsive carboxyl groups were introduced to the target polymer of HTHP 2. The products were characterized via Fourier-transform infrared spectra (FTIR), nuclear magnetic resonance (NMR), and size-exclusion chromatography-multiangle laser light scattering (SEC-MALLS). Moreover, dynamic light scattering (DLS) and UV-Vis spectroscopy was employed to study the pH- and thermoresponsiveness in detail. Results showed that HTHP 2 possessed typical pH-controllable thermoresponsive behavior. By regulating the solution pH value range 3.0-5.4, LCST of HTHP 2 could be changed from 12.8 to 68.0 °C. Meanwhile, the cell viabilities of A549 cells were more than 80% for in vitro cytotoxicity tests of HTHP 2, suggested that HTHP 2 polymers are of good biocompatibility for up to 24 h.
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Affiliation(s)
- Xiuzhong Zhu
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xiao Duan
- Department of Pharmceutical analysis of Changzhi Medical College, Changzhi 046000, China.
| | - Ting Bai
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xuan Zhang
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Tong Wang
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Tao Cao
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xiaodong Fan
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
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23
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Wei X, Shen J, Gu Z, Zhu Y, Chen F, Zhong M, Yin L, Xie Y, Liu Z, Jin W, Nouri M, Chang L. Bioinspired pH-Sensitive Surface on Bioinert Substrate. ACS APPLIED BIO MATERIALS 2018; 1:2167-2175. [PMID: 34996277 DOI: 10.1021/acsabm.8b00579] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xiaojuan Wei
- College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, P R China
| | - Jian Shen
- Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, P R China
| | - Zheng Gu
- Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, P R China
| | - Yazhi Zhu
- College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, P R China
| | - Feng Chen
- College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, P R China
| | - Mingqiang Zhong
- College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, P R China
| | - Li Yin
- Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, P R China
| | - Yao Xie
- Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, P R China
| | - Zhenjie Liu
- Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, P R China
| | - Wei Jin
- Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, P R China
| | - Mehdi Nouri
- Department of Biomaterial Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Lingqian Chang
- Department of Biomaterial Engineering, University of North Texas, Denton, Texas 76207, United States
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, P R China
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