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Lu T, Xia B, Chen G. Advances in polymer-based cell encapsulation and its applications in tissue repair. Biotechnol Prog 2023; 39:e3325. [PMID: 36651921 DOI: 10.1002/btpr.3325] [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: 11/13/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023]
Abstract
Cell microencapsulation is a more widely accepted area of biological encapsulation. In most cases, it involves fixing cells in polymer scaffolds or semi-permeable hydrogel capsules, providing the environment for protecting cells, allowing the exchange of nutrients and oxygen, and protecting cells against the attack of the host immune system by preventing the entry of antibodies and cytotoxic immune cells. Hydrogel encapsulation provides a three-dimensional (3D) environment similar to that experienced in vivo, so it can maintain normal cellular functions to produce tissues similar to those in vivo. Embedded cells can be genetically modified to release specific therapeutic products directly at the target site, thereby eliminating the side effects of systemic treatments. Cellular microcarriers need to meet many extremely high standards regarding their biocompatibility, cytocompatibility, immunoseparation capacity, transport, mechanical, and chemical properties. In this article, we discuss the biopolymer gels used in tissue engineering applications and the brief introduction of cell encapsulation for therapeutic protein production. Also, we review polymer biomaterials and methods for preparing cell microcarriers for biomedical applications. At the same time, in order to improve the application performance of cell microcarriers in vivo, we also summarize the main limitations and improvement strategies of cell encapsulation. Finally, the main applications of polymer cell microcarriers in regenerative medicine are summarized.
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Affiliation(s)
- Tangfang Lu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, People's Republic of China
| | - Bin Xia
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing, People's Republic of China
| | - Guobao Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, People's Republic of China
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2
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Hamami R, Simaan-Yameen H, Gargioli C, Seliktar D. Comparison of Four Different Preparation Methods for Making Injectable Microgels for Tissue Engineering and Cell Therapy. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2022. [DOI: 10.1007/s40883-022-00261-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Lin Z, Rao Z, Chen J, Chu H, Zhou J, Yang L, Quan D, Bai Y. Bioactive Decellularized Extracellular Matrix Hydrogel Microspheres Fabricated Using a Temperature-Controlling Microfluidic System. ACS Biomater Sci Eng 2022; 8:1644-1655. [PMID: 35357124 DOI: 10.1021/acsbiomaterials.1c01474] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hydrogel microspheres have drawn great attention as functional three-dimensional (3D) microcarriers for cell attachment and growth, which have shown great potential in cell-based therapies and biomedical research. Hydrogels derived from a decellularized extracellular matrix (dECM) retain the intrinsic physical and biological cues from the native tissues, which often exhibit high bioactivity and tissue-specificity in promoting tissue regeneration. Herein, a novel two-stage temperature-controlling microfluidic system was developed which enabled production of pristine dECM hydrogel microspheres in a high-throughput manner. Porcine decellularized peripheral nerve matrix (pDNM) was used as the model raw dECM material for continuous generation of pDNM microgels without additional supporting materials or chemical crosslinking. The sizes of the microspheres were well-controlled by tuning the feed ratios of water/oil phases into the microfluidic device. The resulting pDNM microspheres (pDNM-MSs) were relatively stable, which maintained a spherical shape and a nanofibrous ultrastructure for at least 14 days. Schwann cells and PC12 cells preseeded on the pDNM-MSs not only showed excellent viability and an adhesive property, but also promoted cell extension compared to the commercially available gelatin microspheres. Moreover, primary neural stem/progenitor cells attached well to the pDNM-MSs, which further facilitated their proliferation. The successfully fabricated dECM hydrogel microspheres provided a highly bioactive microenvironment for 3D cell culture and functionalization, which showed promising potential in versatile biomedical applications.
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Affiliation(s)
- Zudong Lin
- PCFM Lab, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
| | - Zilong Rao
- Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
| | - Jiaxin Chen
- Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
| | - Hanyu Chu
- PCFM Lab, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
| | - Jing Zhou
- Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
| | - Liqun Yang
- PCFM Lab, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
| | - Daping Quan
- PCFM Lab, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China.,Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
| | - Ying Bai
- Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, Sun Yat-sen University, 132 Waihuan West Road, HEMC, Guangzhou 510006, China
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4
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Biomaterials for Cell-Surface Engineering and Their Efficacy. J Funct Biomater 2021; 12:jfb12030041. [PMID: 34287337 PMCID: PMC8293134 DOI: 10.3390/jfb12030041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/07/2021] [Accepted: 07/09/2021] [Indexed: 12/30/2022] Open
Abstract
Literature in the field of stem cell therapy indicates that, when stem cells in a state of single-cell suspension are injected systemically, they show poor in vivo survival, while such cells show robust cell survival and regeneration activity when transplanted in the state of being attached on a biomaterial surface. Although an attachment-deprived state induces anoikis, when cell-surface engineering technology was adopted for stem cells in a single-cell suspension state, cell survival and regenerative activity dramatically improved. The biochemical signal coming from ECM (extracellular matrix) molecules activates the cell survival signal transduction pathway and prevents anoikis. According to the target disease, various therapeutic cells can be engineered to improve their survival and regenerative activity, and there are several types of biomaterials available for cell-surface engineering. In this review, biomaterial types and application strategies for cell-surface engineering are presented along with their expected efficacy.
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5
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Lyu Y, Xie J, Liu Y, Xiao M, Li Y, Yang J, Yang J, Liu W. Injectable Hyaluronic Acid Hydrogel Loaded with Functionalized Human Mesenchymal Stem Cell Aggregates for Repairing Infarcted Myocardium. ACS Biomater Sci Eng 2020; 6:6926-6937. [PMID: 33320638 DOI: 10.1021/acsbiomaterials.0c01344] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Conventional strategies of stem cell injection in treating myocardial infarction (MI) remain a challenge because of low retention rate and insufficient secretion of exogenous cytokines for efficiently improving the microenvironment in the infarcted myocardium, thus hampering the therapeutic effect. Herein, poly(lactic-co-glycolic acid) (PLGA) microparticles modified with human VE-cad-Fc fusion protein are fabricated and integrated with human mesenchymal stem cells (hMSCs) to construct functionalized MSC aggregates (FMAs). This fusion protein can effectively promote the paracrine activity of MSCs. The FMA is encapsulated with an injectable hyaluronic acid (HA)-based hydrogel, which is prepared by Schiff base reaction between oxidized HA (OHA) and hydrazided HA (HHA). The OHA@HHA hydrogel loading FMA is injected into the infarcted myocardium of rats, thereby efficiently improving the MI microenvironment in terms of decreased expressions of inflammatory cytokines and upregulated secretion of angiogenic factors compared to the plain hydrogel only and hydrogel encapsulating MSCs. The results of both echocardiography and histological analyses demonstrate the efficient reconstruction of cardiac function and structure and revascularization in the infarct myocardium. The delivery of functionalized stem cell aggregates with an injectable hydrogel offers a promising strategy for treating myocardial infarction and may be expanded to other tissue repair and reconstruction.
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Affiliation(s)
- Yuanning Lyu
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China
| | - Jinghui Xie
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300071, China
| | - Yang Liu
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China
| | - Meng Xiao
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China
| | - Yuan Li
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China
| | - Jianhai Yang
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China
| | - Jun Yang
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300071, China
| | - Wenguang Liu
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China
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6
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Kupikowska-Stobba B, Lewińska D. Polymer microcapsules and microbeads as cell carriers for in vivo biomedical applications. Biomater Sci 2020; 8:1536-1574. [PMID: 32110789 DOI: 10.1039/c9bm01337g] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Polymer microcarriers are being extensively explored as cell delivery vehicles in cell-based therapies and hybrid tissue and organ engineering. Spherical microcarriers are of particular interest due to easy fabrication and injectability. They include microbeads, composed of a porous matrix, and microcapsules, where matrix core is additionally covered with a semipermeable membrane. Microcarriers provide cell containment at implantation site and protect the cells from host immunoresponse, degradation and shear stress. Immobilized cells may be genetically altered to release a specific therapeutic product directly at the target site, eliminating side effects of systemic therapies. Cell microcarriers need to fulfil a number of extremely high standards regarding their biocompatibility, cytocompatibility, immunoisolating capacity, transport, mechanical and chemical properties. To obtain cell microcarriers of specified parameters, a wide variety of polymers, both natural and synthetic, and immobilization methods can be applied. Yet so far, only a few approaches based on cell-laden microcarriers have reached clinical trials. The main issue that still impedes progress of these systems towards clinical application is limited cell survival in vivo. Herein, we review polymer biomaterials and methods used for fabrication of cell microcarriers for in vivo biomedical applications. We describe their key limitations and modifications aiming at improvement of microcarrier in vivo performance. We also present the main applications of polymer cell microcarriers in regenerative medicine, pancreatic islet and hepatocyte transplantation and in the treatment of cancer. Lastly, we outline the main challenges in cell microimmobilization for biomedical purposes, the strategies to overcome these issues and potential future improvements in this area.
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Affiliation(s)
- Barbara Kupikowska-Stobba
- Laboratory of Electrostatic Methods of Bioencapsulation, Department of Biomaterials and Biotechnological Systems, Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Trojdena 4, 02-109 Warsaw, Poland.
| | - Dorota Lewińska
- Laboratory of Electrostatic Methods of Bioencapsulation, Department of Biomaterials and Biotechnological Systems, Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Trojdena 4, 02-109 Warsaw, Poland.
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7
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Pupkaite J, Rosenquist J, Hilborn J, Samanta A. Injectable Shape-Holding Collagen Hydrogel for Cell Encapsulation and Delivery Cross-linked Using Thiol-Michael Addition Click Reaction. Biomacromolecules 2019; 20:3475-3484. [DOI: 10.1021/acs.biomac.9b00769] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Justina Pupkaite
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
- Division of Cell Biology, Department of Clinical and Experimental Medicine, Linköping University, Linköping 582 25, Sweden
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa K1H 8M5, Ontario, Canada
| | - Jenny Rosenquist
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Jöns Hilborn
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Ayan Samanta
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
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8
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Takashima I, Kusamori K, Hakariya H, Takashima M, Vu TH, Mizukami Y, Noda N, Takayama Y, Katsuda Y, Sato SI, Takakura Y, Nishikawa M, Uesugi M. Multifunctionalization of Cells with a Self-Assembling Molecule to Enhance Cell Engraftment. ACS Chem Biol 2019; 14:775-783. [PMID: 30807095 DOI: 10.1021/acschembio.9b00109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cell-based therapy is a promising approach to restoring lost functions to compromised organs. However, the issue of inefficient cell engraftment remains to be resolved. Herein, we take a chemical approach to facilitate cell engraftment by using self-assembling molecules which modify two cellular traits: cell survival and invasiveness. In this system, the self-assembling molecule induces syndecan-4 clusters on the cellular surface, leading to enhanced cell viability. Further integration with Halo-tag technology provided this self-assembly structure with matrix metalloproteinase-2 to functionalize cells with cell-invasion activity. In vivo experiments showed that the pretreated cells were able to survive injection and then penetrate and engraft into the host tissue, demonstrating that the system enhances cell engraftment. Therefore, cell-surface modification via an alliance between self-assembling molecules and ligation technologies may prove to be a promising method for cell engraftment.
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Affiliation(s)
- Ippei Takashima
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Kosuke Kusamori
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Hayase Hakariya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Megumi Takashima
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Thi Hue Vu
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yuya Mizukami
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Naotaka Noda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yukiya Takayama
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Yousuke Katsuda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Shin-ichi Sato
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yoshinobu Takakura
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Makiya Nishikawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Motonari Uesugi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Uji, Kyoto 611-0011, Japan
- School of Pharmacy, Fudan University, Shanghai 201203, China
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9
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Benavente-Babace A, Haase K, Stewart DJ, Godin M. Strategies for controlling egress of therapeutic cells from hydrogel microcapsules. J Tissue Eng Regen Med 2019; 13:612-624. [PMID: 30771272 DOI: 10.1002/term.2818] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 01/25/2019] [Accepted: 02/13/2019] [Indexed: 01/09/2023]
Abstract
Endothelial progenitor cells and human mesenchymal stem cells (hMSCs) have shown great regenerative potential to repair damaged tissue; however, their injection in vivo results in low retention and poor cell survival. Early clinical research has focussed on cell encapsulation to improve viability and integration of delivered cells. However, this strategy has been limited by the inability to reproduce large volumes of standardized microcapsules and the lack of information on cell-specific egress and timed release from hydrogel microcapsules. Here, we address both of these limitations. First, we use a droplet microfluidic platform to generate monodisperse agarose microcapsules, and second we encapsulate and characterize egress of therapeutically relevant cells (human umbilical vein endothelial cells, endothelial progenitor cells, and hMSCs). With increased temporal resolution, we demonstrate distinct differences in egress between cell types. Importantly, therapeutic cells (hMSCs) egress quickly, in <6 hr following encapsulation. Further, we examined potential escape mechanisms and showed that proliferation can be exploited by cells for microcapsule translocation. We also systematically characterized the egress of fibroblasts (as model cells) following alterations to the microcapsules. Specifically, we show that microcapsule size and hydrogel density impact cell egress efficiency. Overall, our results demonstrate the need for characterization of cell-specific egress and tuning of the cocoon microenvironment prior to delivery, for timely release and successful engraftment.
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Affiliation(s)
| | - Kristina Haase
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Duncan J Stewart
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Michel Godin
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada.,Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario, Canada.,Ottawa-Carleton Institute for Biomedical Engineering, Ottawa, Ontario, Canada
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10
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Zhu Q, Jiang M, Liu Q, Yan S, Feng L, Lan Y, Shan G, Xue W, Guo R. Enhanced healing activity of burn wound infection by a dextran-HA hydrogel enriched with sanguinarine. Biomater Sci 2018; 6:2472-2486. [PMID: 30066700 DOI: 10.1039/c8bm00478a] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Burn wounds are associated with a series of risks, such as infection and pathologic scar tissue formation, which significantly delay wound healing and lead to complications. In this study, we successfully fabricated a dextran-hyaluronic acid (Dex-HA) hydrogel enriched with sanguinarine (SA) incorporated into gelatin microspheres (GMs), which had high porosity, good swelling ratio, enhanced NIH-3T3 fibroblast cell proliferation, and sustained SA release profile. The in vitro degradation results indicate that the SA/GMs/Dex-HA hydrogel can be degraded. The in vitro antibacterial tests showed that the SA/GMs/Dex-HA hydrogel can inhibit methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli (E. coli). We evaluated the wound-healing effects and antibacterial properties of SA/GMs/Dex-HA hydrogels in a rat full-thickness burn infection model. The hematoxylin-eosin (H&E) and Masson's trichrome staining results of the SA/GMs/Dex-HA hydrogel showed that it improved re-epithelialization and enhanced extracellular matrix remodeling, and immunohistochemistry results showed that the expression of TGF-β1 and TNF-α was decreased, while the TGF-β3 expression was increased. Our findings suggest that the SA/GMs/Dex-HA hydrogel provides a potential way for infected burn treatment with high-quality and efficient scar inhibition.
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Affiliation(s)
- Qiyu Zhu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China.
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11
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Lee JK, Choi IS, Oh TI, Lee E. Cell-Surface Engineering for Advanced Cell Therapy. Chemistry 2018; 24:15725-15743. [PMID: 29791047 DOI: 10.1002/chem.201801710] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/22/2018] [Indexed: 12/16/2022]
Abstract
Stem cells opened great opportunity to overcome diseases that conventional therapy had only limited success. Use of scaffolds made from biomaterials not only helps handling of stem cells for delivery or transplantation but also supports enhanced cell survival. Likewise, cell encapsulation can provide stability for living animal cells even in a state of separateness. Although various chemical reactions were tried to encapsulate stolid microbial cells such as yeasts, a culture environment for the growth of animal cells allows only highly biocompatible reactions. Therefore, the animal cells were mostly encapsulated in hydrogels, which resulted in enhanced cell survival. Interestingly, major findings of chemistry on biological interfaces demonstrate that cell encapsulation in hydrogels have a further a competence for modulating cell characteristics that can go beyond just enhancing the cell survival. In this review, we present a comprehensive overview on the chemical reactions applied to hydrogel-based cell encapsulation and their effects on the characteristics and behavior of living animal cells.
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Affiliation(s)
- Jungkyu K Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Korea
| | - Insung S Choi
- Department of Chemistry and Center for Cell-Encapsulation Research, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Tong In Oh
- Department of Biomedical Engineering, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea
| | - EunAh Lee
- Impedance Imaging Research Center (IIRC), Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea
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12
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Cheung KY, Lai KK, Mak WC. Fabrication of Protein Microparticles and Microcapsules with Biomolecular Tools. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2017-1052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Microparticles have attracted much attention for medical, analytical and biological applications. Calcium carbonate (CaCO3) templating method with the advantages of having narrow size distribution, controlled morphology and good biocompatibility that has been widely used for the synthesis of various protein-based microparticles. Despite CaCO3 template is biocompatible, most of the conventional methods to create stable protein microparticles are mainly driven by chemical crosslink reagents which may induce potential harmful effect and remains undesirable especially for biomedical or clinical applications. In this article, we demonstrate the fabrication of protein microparticles and microcapsules with an innovative method using biomolecular tools such as enzymes and affinity molecules to trigger the assembling of protein molecules within a porous CaCO3 template followed by a template removal step. We demonstrated the enzyme-assisted fabrication of collagen microparticles triggered by transglutaminase, as well as the affinity-assisted fabrication of BSA-biotin avidin microcapsules triggered by biotin-avidin affinity interaction, respectively. Based on the different protein assemble mechanisms, the collagen microparticles appeared as a solid-structured particles, while the BSA-biotin avidin microcapsules appeared as hollow-structured morphology. The fabrication procedures are simple and robust that allows producing protein microparticles or microcapsules under mild conditions at physiological pH and temperature. In addition, the microparticle morphologies, protein compositions and the assemble mechanisms were studied. Our technology provides a facile approach to design and fabricate protein microparticles and microcapsules that are useful in the area of biomaterials, pharmaceuticals and analytical chemistry.
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Affiliation(s)
- Kwan Yee Cheung
- Department of Clinical and Experimental Medicine , Linköping University , SE 58185 Linköping , Sweden
| | - Kwok Kei Lai
- Department of Chemistry , Hong Kong University of Science and Technology, Clear Water Bay , Hong Kong , P.R. China
| | - Wing Cheung Mak
- Department of Clinical and Experimental Medicine , Linköping University , SE 58185 Linköping , Sweden
- Biosensors and Bioelectronics Centre , Department of Physics , Chemistry and Biology, Linköping University , SE 58183 Linköping , Sweden
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13
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Advances in the slow freezing cryopreservation of microencapsulated cells. J Control Release 2018; 281:119-138. [PMID: 29782945 DOI: 10.1016/j.jconrel.2018.05.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/12/2018] [Accepted: 05/15/2018] [Indexed: 12/20/2022]
Abstract
Over the past few decades, the use of cell microencapsulation technology has been promoted for a wide range of applications as sustained drug delivery systems or as cells containing biosystems for regenerative medicine. However, difficulty in their preservation and storage has limited their availability to healthcare centers. Because the preservation in cryogenic temperatures poses many biological and biophysical challenges and that the technology has not been well understood, the slow cooling cryopreservation, which is the most used technique worldwide, has not given full measure of its full potential application yet. This review will discuss the different steps that should be understood and taken into account to preserve microencapsulated cells by slow freezing in a successful and simple manner. Moreover, it will review the slow freezing preservation of alginate-based microencapsulated cells and discuss some recommendations that the research community may pursue to optimize the preservation of microencapsulated cells, enabling the therapy translate from bench to the clinic.
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