1
|
Li Q, Sun Y, Zhao H, Zhang F, Guo Y, Chen X, Zhao G. Structure and properties of the acellular porcine cornea irradiated with 60Co-γ and electron beam and its histocompatibility. J Biomed Mater Res A 2024; 112:825-840. [PMID: 38158889 DOI: 10.1002/jbm.a.37663] [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: 10/29/2022] [Revised: 08/15/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Acellular porcine cornea (APC) has been used in corneal transplantation and treatment of the corneal diseases. Sterilization is a key step before the application of graft, and irradiation is one of the most commonly used methods. In this paper, APC was prepared by the physical freeze-thawing combined with biological enzymes, and the effects of the electron beam (E-beam) and cobalt 60 (60Co-γ) at the dose of 15 kGy on the physicochemical properties, structure, immunogenicity, and biocompatibility of the APC were investigated. After decellularization, the residual DNA was 20.86 ± 1.02 ng/mg, and the α-Gal clearance rate was more than 99%. Irradiation, especially the 60Co-γ, reduced the cornea's transmittance, elastic modulus, enzymatic hydrolysis rate, swelling ratio, and cross-linking degree. Meanwhile, the diameter and spacing of the collagen fibers increased. In the rat subcutaneous implantation, many inflammatory cells appeared in the unirradiated APC, while the irradiated had good histocompatibility, but the degradation was faster. The lamellar keratoplasty in rabbits indicated that compared to the E-beam, the 60Co-γ damaged the chemical bond of collagen to a larger extent, reduced the content of GAGs, and prolonged the complete epithelization of the grafts. The corneal edema was more serious within 1 month after the surgery. After 2 months, the thickness of the APC with the two irradiation methods tended to be stable, but that in the 60Co-γ group became thinner. The pathological results showed that the collagen structure was looser and the pores were larger, indicating the 60Co-γ had a more extensive effect on the APC than the E-beam at 15 kGy.
Collapse
Affiliation(s)
- Qing Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Yajun Sun
- Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao, Shandong, China
| | - Haibin Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Fan Zhang
- Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Yu Guo
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Xin Chen
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Guoqun Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| |
Collapse
|
2
|
Šupová M, Suchý T, Chlup H, Šulc M, Kotrč T, Šilingová L, Žaloudková M, Rýglová Š, Braun M, Chvátil D, Hrdlička Z, Houška M. The electron beam irradiation of collagen in the dry and gel states: The effect of the dose and water content from the primary to the quaternary levels. Int J Biol Macromol 2023; 253:126898. [PMID: 37729990 DOI: 10.1016/j.ijbiomac.2023.126898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/05/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023]
Abstract
The aim of our study was to describe the impact of collagen in the gel and dry state to various doses of electron beam radiation (1, 10 and 25 kGy) which are using for food processing and sterilization. The changes in the chemical compositions (water, amino acids, lipids, glycosaminoglycans) were analyzed and the changes in the structure (triple-helix or β-sheet, the integrity of the collagen) were assessed. Subsequently, the impact of the applied doses on the mechanical properties, stability in the enzymatic environment, swelling and morphology were determined. The irradiated gels evinced enhanced degrees of cross-linking with only partial degradation. Nevertheless, an increase was observed in their stability manifested via a higher degree of resistance to the enzymatic environment, a reduction in swelling and, in terms of the mechanical behaviour, an approximation to the non-linear behavior of native tissues. In contrast, irradiation in the dry state exerted a somewhat negative impact on the observed properties and was manifested mainly via the scission of the collagen molecule and via a lower degree of stability in the aqueous and enzymatic environments. Neither the chemical composition nor the morphology was affected by irradiation.
Collapse
Affiliation(s)
- Monika Šupová
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic.
| | - Tomáš Suchý
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic; Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Hynek Chlup
- Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Miloslav Šulc
- Food Research Institute Prague, 102 00 Prague 10, Czech Republic
| | - Tomáš Kotrč
- Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Lucie Šilingová
- Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Margit Žaloudková
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic
| | - Šárka Rýglová
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic
| | - Martin Braun
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic
| | - David Chvátil
- Nuclear Physics Institute CAS, v.v.i., 250 68 Řež, Czech Republic
| | - Zdeněk Hrdlička
- Department of Polymers, University of Chemistry and Technology Prague, 166 28, Prague 6, Czech Republic
| | - Milan Houška
- Food Research Institute Prague, 102 00 Prague 10, Czech Republic
| |
Collapse
|
3
|
Li Q, Sun Y, Zhao H, Gao Z, Zhai D. Structure and properties of the acellular porcine cornea irradiated with electron beam and its in-situ implantation. J Biomed Mater Res B Appl Biomater 2023; 111:2013-2024. [PMID: 37477184 DOI: 10.1002/jbm.b.35301] [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: 11/18/2022] [Revised: 05/15/2023] [Accepted: 07/07/2023] [Indexed: 07/22/2023]
Abstract
Different sterilization doses of the electron beam (E-beam) will change the properties of biomaterials and affect their clinical application. Acellular porcine cornea (APC) is a promising corneal substitute to alleviate the shortage of corneal resources. The residual DNA was significantly reduced to 18.50 ± 3.19 ng/mg, and the clearance rate of α-Gal was close to 100% after the treatment with freezing-thawing combined enzyme, indicating that the decellularization was effective. The effects of different E-beam doses at 0, 2, 8, 15, and 25 kGy on the APC were studied. With the increase in irradiation dose, the transmittance, tensile strength, and swelling ratio of APC gradually decreased, but the resistance to enzymatic degradation was stronger than that of non-irradiated APC, especially at 8 kGy. The structure of APC was denser after irradiation, but the dose of 25 kGy could cause partial collagen fiber fracture and increase the pore size. The cell viability of the APC irradiated by 15 and 25 kGy were greater than 80%. After the implantation in rabbit corneas, there was no obvious neovascularization and inflammation, but the dose of 25 kGy had a more destructive effect on the chemical bonds of collagen, which made the APC easier to be degraded. The thickness of APC in the 25 kGy group was thinner than that in the 15 kGy group 1 year after surgery, and the epithelium grew more slowly, so the E-beam dose of 15 kGy might be more suitable for the sterilization of APC.
Collapse
Affiliation(s)
- Qing Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Yajun Sun
- Research and Development Center, Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao, Shandong, China
| | - Haibin Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Zhiyong Gao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Dongjie Zhai
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| |
Collapse
|
4
|
Demeter M, Călina I, Scărișoreanu A, Micutz M, Kaya MA. Correlations on the Structure and Properties of Collagen Hydrogels Produced by E-Beam Crosslinking. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15217663. [PMID: 36363255 PMCID: PMC9658620 DOI: 10.3390/ma15217663] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/03/2022] [Accepted: 10/29/2022] [Indexed: 05/12/2023]
Abstract
In this study, a collagen hydrogel using collagen exclusively produced in Romania, was obtained by electron beam (e-beam) crosslinking. The purpose of our study is to obtain new experimental data on the crosslinking of collagen and to predict as faithfully as possible, its behavior at high irradiation doses and energies. To pursue this, the correlations between macromolecular structure and properties of collagen hydrogels were determined by rheological analysis, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Differential Scanning Calorimetry (DSC), respectively. The gel fraction, swelling degree, and network parameters of the collagen hydrogels were also investigated at different irradiation doses. Through experimental exploration, we concluded that irradiation with e-beam up to 25 kGy induces crosslinking processes in collagen structure without producing advanced degradation processes. E-beam technology is a great method to develop new materials for medical applications without adding other chemical reagents harmful to human health. The future aim is to develop new wound dressings for rapid healing based on collagen, through irradiation technologies.
Collapse
Affiliation(s)
- Maria Demeter
- National Institute for Lasers, Plasma and Radiation Physics (INFLPR), Atomiştilor 409, 077125 Măgurele, Romania
| | - Ion Călina
- National Institute for Lasers, Plasma and Radiation Physics (INFLPR), Atomiştilor 409, 077125 Măgurele, Romania
- Correspondence: (I.C.); (A.S.)
| | - Anca Scărișoreanu
- National Institute for Lasers, Plasma and Radiation Physics (INFLPR), Atomiştilor 409, 077125 Măgurele, Romania
- Correspondence: (I.C.); (A.S.)
| | - Marin Micutz
- Department of Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Mădălina Albu Kaya
- Department of Collagen, Division Leather and Footwear Research Institute, National Research and Development Institute for Textiles and Leather (INCDTP), 93 Ion Minulescu Str., 031215 Bucharest, Romania
| |
Collapse
|
5
|
Zhang X, Xu S, Shen L, Li G. Factors affecting thermal stability of collagen from the aspects of extraction, processing and modification. JOURNAL OF LEATHER SCIENCE AND ENGINEERING 2020. [DOI: 10.1186/s42825-020-00033-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abstract
Collagen, as a thermal-sensitive protein, is the most abundant structural protein in animals. Native collagen has been widely applied in various fields due to its specific physicochemical and biological properties. The beneficial properties would disappear with the collapse of the unique triple helical structure during heating. Understanding thermal stability of collagen is of great significance for practical applications. Previous studies have shown the thermal stability would be affected by the different sources, extraction methods, solvent systems in vitro and modified methods. Accordingly, the factors affecting thermal stability of collagen are discussed in detail in this review.
Graphical abstract
Collapse
|
6
|
Walker S, Dittfeld C, Jakob A, Schönfelder J, König U, Tugtekin SM. Sterilization and Cross-Linking Combined with Ultraviolet Irradiation and Low-Energy Electron Irradiation Procedure: New Perspectives for Bovine Pericardial Implants in Cardiac Surgery. Thorac Cardiovasc Surg 2020; 70:33-42. [PMID: 32114687 DOI: 10.1055/s-0040-1705100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Bovine pericardium is the major natural source of patches and aortic valve substitutes in cardiac repair procedures. However, long-term tissue durability and biocompatibility issues lead to degeneration (e.g., calcification) that requires reoperation. Tissue preparation strategies, including glutaraldehyde fixation, are reasons for the deterioration of pericardial tissues. We describe a pretreatment procedure involving sterilization and cross-linking combined with ultraviolet (UV) irradiation and low-energy electron irradiation (SULEEI). This innovative, glutaraldehyde-free protocol improves the mechanical aspects and biocompatibility of porcine pericardium patches. METHODS We adopted the SULEEI protocol, which combines decellularization, sterilization, and cross-linking, along with UV irradiation and low-energy electron irradiation, to pretreat bovine pericardium. Biomechanics, such as ultimate tensile strength and elasticity, were investigated by comparing SULEEI-treated tissue with glutaraldehyde-fixed analogues, clinical patch materials, and an aortic valve substitute. Histomorphological and cellular aspects were investigated by histology, DNA content analysis, and degradability. RESULTS Mechanical parameters, including ultimate tensile strength, elasticity (Young's modulus), and suture retention strength, were similar for SULEEI-treated and clinically applied bovine pericardium. The SULEEI-treated tissues showed well-preserved histoarchitecture that resembled all pericardial tissues investigated. Fiber density did not differ significantly. DNA content after the SULEEI procedure was reduced to less than 10% of the original tissue material, and more than 50% of the SULEEI-treated pericardium was digested by collagenase. CONCLUSION The SULEEI procedure represents a new treatment protocol for the preparation of patches and aortic valve prostheses from bovine pericardial tissue. The avoidance of glutaraldehyde fixation may lessen the tissue degeneration processes in cardiac repair patches and valve prostheses.
Collapse
Affiliation(s)
- Simona Walker
- Department of Medical and Biotechnological Applications, Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology, Dresden, Germany
| | - Claudia Dittfeld
- Department of Cardiac Surgery, Faculty of Medicine Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Aline Jakob
- Department of Cardiac Surgery, Faculty of Medicine Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Jessy Schönfelder
- Department of Medical and Biotechnological Applications, Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology, Dresden, Germany
| | - Ulla König
- Department of Medical and Biotechnological Applications, Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology, Dresden, Germany
| | - Sems-Malte Tugtekin
- Department of Cardiac Surgery, Faculty of Medicine Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| |
Collapse
|
7
|
Wu N, Yu H, Sun M, Li Z, Zhao F, Ao Y, Chen H. Investigation on the Structure and Mechanical Properties of Highly Tunable Elastomeric Silk Fibroin Hydrogels Cross-Linked by γ-Ray Radiation. ACS APPLIED BIO MATERIALS 2019; 3:721-734. [PMID: 35019416 DOI: 10.1021/acsabm.9b01062] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nier Wu
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Huilei Yu
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Muyang Sun
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Zong Li
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Fengyuan Zhao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Yingfang Ao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Haifeng Chen
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
8
|
Demeter M, Călina I, Vancea C, Şen M, Kaya MGA, Mănăilă E, Dumitru M, Meltzer V. E-Beam Processing of Collagen-Poly(N-vinyl-2-pyrrolidone) Double-Network Superabsorbent Hydrogels: Structural and Rheological Investigations. Macromol Res 2019. [DOI: 10.1007/s13233-019-7041-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
9
|
Chen L, Yang K, Zhao H, Liu A, Tu W, Wu C, Chen S, Guo Z, Luo H, Sun J, Fan H. Biomineralized Hydrogel with Enhanced Toughness by Chemical Bonding of Alkaline Phosphatase and Vinylphosphonic Acid in Collagen Framework. ACS Biomater Sci Eng 2019; 5:1405-1415. [DOI: 10.1021/acsbiomaterials.8b01197] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lu Chen
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Ke Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Huan Zhao
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Amin Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Wanying Tu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Chengheng Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Suping Chen
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Zhenzhen Guo
- Department of Gastroenterology, Hospital of the University of Electronic Science and Technology of China, Sichuan Provincial People’s Hospital, Sichuan, Chengdu 610072, China
| | - Hongrong Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Jing Sun
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Hongsong Fan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| |
Collapse
|
10
|
Walker S, Schönfelder J, Tugtekin SM, Wetzel C, Hacker MC, Schulz-Siegmund M. Stabilization and Sterilization of Pericardial Scaffolds by Ultraviolet and Low-Energy Electron Irradiation. Tissue Eng Part C Methods 2018; 24:717-729. [PMID: 30412035 PMCID: PMC6306682 DOI: 10.1089/ten.tec.2018.0285] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/08/2018] [Indexed: 11/13/2022] Open
Abstract
IMPACT STATEMENT Pericardium-based tissue transplantation is a lifesaving treatment. Commercial glutaraldehyde-treated pericardial tissue exhibits cytotoxicity, which is associated with the accelerated graft failure. Replacement of glutaraldehyde has been suggested to overcome those drawbacks. In this study, we report a toxin-free method that combines tissue stabilization with a terminal sterilization. Our data indicate that the SULEEI procedure, which is part of an issued patent, may be a promising first step toward glutaraldehyde-free pericardium-based tissue transplants. Thus, our results may contribute to improving cardiovascular treatment strategies.
Collapse
Affiliation(s)
- Simona Walker
- Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, Dresden, Germany
| | - Jessy Schönfelder
- Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, Dresden, Germany
| | - Sems-Malte Tugtekin
- Department of Cardiac Surgery, Faculty of Medicine CGC, Technische Universität Dresden, Herzzentrum Dresden, Dresden, Germany
| | - Christiane Wetzel
- Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, Dresden, Germany
| | - Michael C. Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, Leipzig University, Leipzig, Germany
| |
Collapse
|
11
|
Yunoki S, Hatayama H, Ebisawa M, Kondo E, Yasuda K. A novel method for continuous formation of cord‐like collagen gels to fabricate durable fibers in which collagen fibrils are longitudinally aligned. J Biomed Mater Res B Appl Biomater 2018; 107:1011-1023. [DOI: 10.1002/jbm.b.34194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/25/2018] [Accepted: 06/27/2018] [Indexed: 01/23/2023]
Affiliation(s)
- Shunji Yunoki
- Biotechnology GroupTokyo Metropolitan Industrial Technology Research Institute (TIRI) Tokyo Japan
| | - Hirosuke Hatayama
- Biotechnology GroupTokyo Metropolitan Industrial Technology Research Institute (TIRI) Tokyo Japan
| | - Mizue Ebisawa
- Optical Radiation and Acoustics Technology GroupTokyo Metropolitan Industrial Technology Research Institute (TIRI) Tokyo Japan
| | - Eiji Kondo
- Department of Advanced Therapeutic Research for Sports MedicineHokkaido University Graduate School of Medicine Sapporo Japan
| | - Kazunori Yasuda
- Department of Sports MedicineHokkaido University Graduate School of Medicine Sapporo Japan
- Knee Research Center, Yagi Orthopaedic Hospital Sapporo Japan
| |
Collapse
|
12
|
Lee W, Toussaint KC. Quantitative analysis of the effect of environmental-scanning electron microscopy on collagenous tissues. Sci Rep 2018; 8:8491. [PMID: 29855602 PMCID: PMC5981445 DOI: 10.1038/s41598-018-26839-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/15/2018] [Indexed: 11/25/2022] Open
Abstract
Environmental-scanning electron microscopy (ESEM) is routinely applied to various biological samples due to its ability to maintain a wet environment while imaging; moreover, the technique obviates the need for sample coating. However, there is limited research carried out on electron-beam (e-beam) induced tissue damage resulting from using the ESEM. In this paper, we use quantitative second-harmonic generation (SHG) microscopy to examine the effects of e-beam exposure from the ESEM on collagenous tissue samples prepared as either fixed, frozen, wet or dehydrated. Quantitative SHG analysis of tissues, before and after ESEM e-beam exposure in low-vacuum mode, reveals evidence of cross-linking of collagen fibers, however there are no structural differences observed in fixed tissue. Meanwhile wet-mode ESEM appears to radically alter the structure from a regular fibrous arrangement to a more random fiber orientation. We also confirm that ESEM images of collagenous tissues show higher spatial resolution compared to SHG microscopy, but the relative tradeoff with collagen specificity reduces its effectiveness in quantifying collagen fiber organization. Our work provides insight on both the limitations of the ESEM for tissue imaging, and the potential opportunity to use as a complementary technique when imaging fine features in the non-collagenous regions of tissue samples.
Collapse
Affiliation(s)
- Woowon Lee
- University of Illinois at Urbana-Champaign, Department of Mechanical Science and Engineering, 1206 W Green Street, Urbana, Illinois, 61801, United States
- University of Illinois at Urbana-Champaign, PROBE Lab, 1206 W Green Street, Urbana, Illinois, 61801, United States
| | - Kimani C Toussaint
- University of Illinois at Urbana-Champaign, Department of Mechanical Science and Engineering, 1206 W Green Street, Urbana, Illinois, 61801, United States.
- University of Illinois at Urbana-Champaign, PROBE Lab, 1206 W Green Street, Urbana, Illinois, 61801, United States.
- University of Illinois at Urbana-Champaign, Affiliate in the Department of Electrical and Computer Engineering, 1406 W Green Street, Urbana, Illinois, 61801, United States.
- University of Illinois at Urbana-Champaign, Department of Bioengineering, 1270 Digital Computer Laboratory, Urbana, Illinois, 61801, United States.
| |
Collapse
|
13
|
Lee JB, Ko YG, Cho D, Park WH, Kwon OH. Modification and optimization of electrospun gelatin sheets by electron beam irradiation for soft tissue engineering. Biomater Res 2017; 21:14. [PMID: 28702219 PMCID: PMC5505046 DOI: 10.1186/s40824-017-0100-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 06/22/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Crosslinked gelatin nanofibers are one of the widely used scaffolds for soft tissue engineering. However, modifying the biodegradation rate of chemically crosslinked gelatin is necessary to facilitate cell migration and tissue regeneration. Here, we investigated the optimal electron beam (e-beam) irradiation doses with biodegradation behavior on changes in the molecular weight, morphology, pore structure, and cell proliferation profiles of electrospun nanofibrous gelatin sheets. METHODS The molecular weights of uncrosslinked gelatin nanofibers were measured using gel permeation chromatography. The morphology and pore structure of the gelatin scaffolds were analyzed by scanning electron microscopy and a porosimeter. Biodegradation tests were performed in phosphate-buffered saline solutions for 4 weeks. Cell proliferation and tissue regeneration profiles were examined in fibroblasts using WST-1 assays and hematoxylin and eosin staining. RESULTS Crosslinked gelatin nanofiber sheets exposed to e-beam irradiation over 300 kGy showed approximately 50% weight loss in 2 weeks. Gelatin scaffolds exposed to e-beam irradiation at 100-200 kGy showed significantly increased cell proliferation after 7 days of incubation. CONCLUSIONS These findings suggested that the biodegradation and cell proliferation rates of gelatin nanofiber scaffolds could be optimized by varying e-beam irradiation doses for soft tissue engineering.
Collapse
Affiliation(s)
- Jae Baek Lee
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
| | - Young-Gwang Ko
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
| | - Donghwan Cho
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
| | - Won Ho Park
- Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon, 34134 Korea
| | - Oh Hyeong Kwon
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
| |
Collapse
|
14
|
Regulation of the secretion of immunoregulatory factors of mesenchymal stem cells (MSCs) by collagen-based scaffolds during chondrogenesis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:983-991. [DOI: 10.1016/j.msec.2016.04.096] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/05/2016] [Accepted: 04/28/2016] [Indexed: 12/12/2022]
|
15
|
Eo MY, Fan H, Cho YJ, Kim SM, Lee SK. Cellulose membrane as a biomaterial: from hydrolysis to depolymerization with electron beam. Biomater Res 2016; 20:16. [PMID: 27418974 PMCID: PMC4944233 DOI: 10.1186/s40824-016-0065-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 06/02/2016] [Indexed: 11/24/2022] Open
Abstract
The cellulose membrane (CM) is a major component of plant cell walls and is both a chemically and mechanically stable synthetic polymer with many applications for use in tissue engineering. However, due to its dissolution difficulty, there are no known physiologically relevant or pharmaceutically clinical applications for this polymer. Thus, research is underway on controlled and adjusted forms of cellulose depolymerization. To advance the study of applying CM for tissue engineering, we have suggested new possibilities for electron beam (E-beam) treatment of CM. Treatment of CM with an E-beam can modify physical, chemical, molecular and biological properties, so it can be studied continuously to improve its usefulness and to enhance value. We review clinical applications of CM, cellulose binding domains, cellulose crosslinking proteins, conventional hydrolysis of cellulose, and depolymerization with radiation and focus our experiences with depolymerization of E-beam irradiated CM in this article.
Collapse
Affiliation(s)
- Mi Young Eo
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 110-768 South Korea
| | - Huan Fan
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 110-768 South Korea
| | - Yun Ju Cho
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 110-768 South Korea
| | - Soung Min Kim
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 110-768 South Korea
| | - Suk Keun Lee
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung, 123 Chibyon-dong, Gangneung, 210-702 South Korea
| |
Collapse
|
16
|
Wisotzki EI, Friedrich RP, Weidt A, Alexiou C, Mayr SG, Zink M. Cellular Response to Reagent-Free Electron-Irradiated Gelatin Hydrogels. Macromol Biosci 2016; 16:914-24. [DOI: 10.1002/mabi.201500408] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/29/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Emilia I. Wisotzki
- Leibniz Institute of Surface Modification (IOM); Permoserstrasse 15 04318 Leipzig Germany
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
| | - Ralf P. Friedrich
- ENT Clinic; Section of Experimental Oncology and Nanomedicine (SEON); Else Kröner-Fresenius-Stiftung Professorship; University Hospital Erlangen; Erlangen Germany
| | - Astrid Weidt
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
| | - Christoph Alexiou
- ENT Clinic; Section of Experimental Oncology and Nanomedicine (SEON); Else Kröner-Fresenius-Stiftung Professorship; University Hospital Erlangen; Erlangen Germany
| | - Stefan G. Mayr
- Leibniz Institute of Surface Modification (IOM); Permoserstrasse 15 04318 Leipzig Germany
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
| | - Mareike Zink
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
| |
Collapse
|
17
|
Vocal Fold Augmentation with Beta Glucan Hydrogel Cross-Linked by γ Irradiation for Enhanced Duration of Effect: In Vivo Animal Study. BIOMED RESEARCH INTERNATIONAL 2015; 2015:592372. [PMID: 26858956 PMCID: PMC4691524 DOI: 10.1155/2015/592372] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 11/15/2015] [Indexed: 12/22/2022]
Abstract
This study explored a novel strategy to restore the vocal gap by using cross-linked β-glucan hydrogel by γ-irradiation. An aqueous solution of 5 wt% β-glucan was prepared and cross-linked using 60Co γ irradiation. Ten nude mice were injected with 0.8 mL of irradiated β-glucan on the left back and the same volume of nonirradiated β-glucan on the right back for comparison. The mice were sacrificed at 1 and 2 weeks after injection and histological evaluations were performed. Irradiated β-glucan demonstrated a significantly larger volume than nonirradiated β-glucan in the back of nude mice with less inflammatory reaction. After unilateral recurrent laryngeal nerve section in New Zealand White rabbits, irradiated and nonirradiated β-glucan were injected into paralyzed vocal folds. Irradiated β-glucan remained at the paralyzed vocal fold without definite inflammatory signs on endoscopy. High-speed recordings of vocal fold vibration showed decreased vocal gap in irradiated group compared to nonirradiated group. Histologically, the laryngeal epithelium and lamina propria remained intact, without inflammatory cell infiltration. Our newly developed injection material, irradiated β-glucan, showed excellent biocompatibility and remained longer than nonirradiated β-glucan in vivo, suggesting irradiated hydrogels as a new therapeutic approach that may be useful for the long-term treatment of vocal fold palsy.
Collapse
|
18
|
Kim SM, Fan H, Cho YJ, Eo MY, Park JH, Kim BN, Lee BC, Lee SK. Electron beam effect on biomaterials I: focusing on bone graft materials. Biomater Res 2015; 19:10. [PMID: 26331080 PMCID: PMC4552193 DOI: 10.1186/s40824-015-0031-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 03/30/2015] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND To develop biocompatible bony regeneration materials, allogenic, xenogenic and synthetic bones have been irradiated by an electron beam to change the basic structures of their inorganic materials. The optimal electron beam energy and individual dose have not been established for maximizing the bony regeneration capacity in electron beam irradiated bone. RESULTS Commercial products consisting of four allogenic bones, six xenogenic bones, and six synthetic bones were used in this study. We used 1.0-MeV and 2.0 MeV linear accelerators (power: 100 KW, pressure; 115 kPa, temperature; -30 to 120°C, sensor sensitivity: 0.1-1.2 mV/kPa, generating power sensitivity: 44.75 mV/kPa, supply voltage: 50.25 V), and a microtrone with different individual irradiation doses such as 60 kGy and 120 kGy. Additional in vitro analyses were performed by elementary analysis using field emission scanning electron microscopy (FE-SEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and confocal laser scanning microscopy (CLSM). In vivo clinical, radiographic, and micro-computed tomography (Micro-CT) with bone marrow density (BMD) analysis was performed in 8- and 16-week-old Spraque-Dawley rats with calvarial defect grafts. CONCLUSIONS Electron beam irradiation of bony substitutes has four main effects: the cross-linking of biphasic calcium phosphate bony apatite, chain-scissioning, the induction of rheological changes, and microbiological sterilization. These novel results and conclusions are the effects of electron beam irradiation.
Collapse
Affiliation(s)
- Soung Min Kim
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 62-1 Changgyeonggungno, Jongno-gu, Seoul 110-768 South Korea
| | - Huan Fan
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 62-1 Changgyeonggungno, Jongno-gu, Seoul 110-768 South Korea
| | - Yun Ju Cho
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 62-1 Changgyeonggungno, Jongno-gu, Seoul 110-768 South Korea
| | - Mi Young Eo
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 62-1 Changgyeonggungno, Jongno-gu, Seoul 110-768 South Korea
| | - Ji Hyun Park
- Quantum Optics Research Division, Korea Atomic Energy Research Institute, Daejeon, South Korea
| | - Byung Nam Kim
- Radiation Instrumentation Research Division, Korea Atomic Energy Research Institute, Daejeon, South Korea
| | - Byung Cheol Lee
- Quantum Optics Research Division, Korea Atomic Energy Research Institute, Daejeon, South Korea
| | - Suk Keun Lee
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, 123 Chibyon-dong, Gangneung, 210-702 South Korea
| |
Collapse
|
19
|
BenBettaïeb N, Karbowiak T, Bornaz S, Debeaufort F. Spectroscopic analyses of the influence of electron beam irradiation doses on mechanical, transport properties and microstructure of chitosan-fish gelatin blend films. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.09.038] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
20
|
Characterization and tissue incorporation of cross-linked human acellular dermal matrix. Biomaterials 2015; 44:195-205. [DOI: 10.1016/j.biomaterials.2014.12.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 12/10/2014] [Accepted: 12/16/2014] [Indexed: 11/18/2022]
|
21
|
Türker NS, Özer AY, Kutlu B, Nohutcu R, Sungur A, Bilgili H, Ekizoglu M, Özalp M. The effect of gamma radiation sterilization on dental biomaterials. Tissue Eng Regen Med 2014. [DOI: 10.1007/s13770-014-0016-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
22
|
Polymerized Structure and Improved Physical and Biochemical Material Properties of Carboxymethyl Dextran-Conjugated Collagen. Biosci Biotechnol Biochem 2014; 72:1438-47. [DOI: 10.1271/bbb.70751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
23
|
Delgado LM, Pandit A, Zeugolis DI. Influence of sterilisation methods on collagen-based devices stability and properties. Expert Rev Med Devices 2014; 11:305-14. [PMID: 24654928 DOI: 10.1586/17434440.2014.900436] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Sterilisation is essential for any implantable medical device in order to prevent infection in patients. The selection of the most appropriate sterilisation method depends on the nature and the physical state of the material to be sterilised; the influence of the sterilisation method on the properties of the device; and the type of the potential contaminant. In this context, herein we review the influence of ethylene oxide, γ-irradiation, e-beam irradiation, gas plasma, peracetic acid and ethanol on structural, biomechanical, biochemical and biological properties of collagen-based devices. Data to-date demonstrate that chemical approaches are associated with cytotoxicity, whilst physical methods are associated with degradation, subject to the device physical characteristics. Thus, the sterilisation method of choice is device dependent.
Collapse
Affiliation(s)
- Luis M Delgado
- Network of Excellence for Functional Biomaterials (NFB), National University of Ireland Galway (NUI Galway), Galway, Ireland
| | | | | |
Collapse
|
24
|
Babczyk P, Conzendorf C, Klose J, Schulze M, Harre K, Tobiasch E. Stem Cells on Biomaterials for Synthetic Grafts to Promote Vascular Healing. J Clin Med 2014; 3:39-87. [PMID: 26237251 PMCID: PMC4449663 DOI: 10.3390/jcm3010039] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 10/28/2013] [Accepted: 11/16/2013] [Indexed: 12/25/2022] Open
Abstract
This review is divided into two interconnected parts, namely a biological and a chemical one. The focus of the first part is on the biological background for constructing tissue-engineered vascular grafts to promote vascular healing. Various cell types, such as embryonic, mesenchymal and induced pluripotent stem cells, progenitor cells and endothelial- and smooth muscle cells will be discussed with respect to their specific markers. The in vitro and in vivo models and their potential to treat vascular diseases are also introduced. The chemical part focuses on strategies using either artificial or natural polymers for scaffold fabrication, including decellularized cardiovascular tissue. An overview will be given on scaffold fabrication including conventional methods and nanotechnologies. Special attention is given to 3D network formation via different chemical and physical cross-linking methods. In particular, electron beam treatment is introduced as a method to combine 3D network formation and surface modification. The review includes recently published scientific data and patents which have been registered within the last decade.
Collapse
Affiliation(s)
- Patrick Babczyk
- Department of Natural Science, Bonn-Rhein-Sieg University of Applied Science, Von-Liebig-Street 20, Rheinbach 53359, Germany.
| | - Clelia Conzendorf
- Faculty of Mechanical Engineering/Process Engineering, University of Applied Science Dresden, Friedrich-List-Platz 1, Dresden 01069, Germany.
| | - Jens Klose
- Faculty of Mechanical Engineering/Process Engineering, University of Applied Science Dresden, Friedrich-List-Platz 1, Dresden 01069, Germany.
| | - Margit Schulze
- Department of Natural Science, Bonn-Rhein-Sieg University of Applied Science, Von-Liebig-Street 20, Rheinbach 53359, Germany.
| | - Kathrin Harre
- Faculty of Mechanical Engineering/Process Engineering, University of Applied Science Dresden, Friedrich-List-Platz 1, Dresden 01069, Germany.
| | - Edda Tobiasch
- Department of Natural Science, Bonn-Rhein-Sieg University of Applied Science, Von-Liebig-Street 20, Rheinbach 53359, Germany.
| |
Collapse
|
25
|
Zhang X, Xu L, Huang X, Wei S, Zhai M. Structural study and preliminary biological evaluation on the collagen hydrogel crosslinked by γ-irradiation. J Biomed Mater Res A 2012; 100:2960-9. [PMID: 22696280 DOI: 10.1002/jbm.a.34243] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 04/27/2012] [Accepted: 05/03/2012] [Indexed: 11/11/2022]
Abstract
Under γ-irradiation, concentrated collagen solutions yielded collagen hydrogels and liquid products. The molecular structure of collagen hydrogels and the source of the liquid products were studied. Furthermore, preliminary biological properties of the hydrogels were investigated. The results revealed that crosslinking occurred to form collagen hydrogel and the crosslinking density increased with the increasing of the absorbed dose, and the collagen hydrogels showed enhanced mechanical properties. Meanwhile, collagen underwent radiation degradation and water was squeezed out from hydrogel by contraction of hydrogel, yielding liquid products. Collagen hydrogels induced by γ-irradiation maintained the backbone structure of collagen, and tyrosine partially involved in crosslinking. The irradiated collagen hydrogels have higher denatured temperature, can promote fibroblasts proliferation, and their degradation rate in vivo depended on the absorbed dose. The comprehensive results suggested that the collagen hydrogels prepared by radiation crosslinking preserved the triple helical conformation, possessed improved thermal stability and mechanical properties, excellent biocompatibility, which is expected to favor its application as biomaterials.
Collapse
Affiliation(s)
- Xiangmei Zhang
- Beijing Key Laboratory for Solid Waste Utilization and Management, College of Engineering, Peking University, Beijing, China
| | | | | | | | | |
Collapse
|
26
|
Yuan T, Zhang L, Feng L, Fan H, Zhang X. Chondrogenic differentiation and immunological properties of mesenchymal stem cells in collagen type I hydrogel. Biotechnol Prog 2011; 26:1749-58. [PMID: 20865774 DOI: 10.1002/btpr.484] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Allogeneic mesenchymal stem cells (MSCs) are regarded as promising seed cells for engineering cartilage. However, few researches have covered the immune properties of seeded MSCs. Collagen has been considered as good scaffold, whether it has inherent chondrogenic inducibility for MSCs is still in debate. In this study, engineering grafts are constructed by neonatal rabbit MSCs and collagen Type I hydrogel. After periods of culture, the appearance of chondroid tissue in the grafts and the cartilage matrix-specific genes expressions of seeded cells prove the inducibility of collagen hydrogel, even if the growth factors are absence. With the differentiation, immunological properties of MSCs are changing. The expressions of main histocompatibility complex (MHC) molecules increase and the ability to inhibit the proliferation of activated lymphocytes may be declined. But to a large extent, it keeps the low stimulating to allogeneic lymphocytes and the small absolute value of MHCs. The changes are adverse for avoiding inflammation and rejection. Therefore, suitable scaffold and engineering strategies should be selected. For the grafts based on Collagen I hydrogel and MSCs, a longer culture period might not be necessary. To maintain the immune regulation, a higher initial MSCs density in engineering grafts may be more meaningful.
Collapse
Affiliation(s)
- Tun Yuan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | | | | | | | | |
Collapse
|
27
|
Liu G, Wang Z, Lu J, Xia C, Gao F, Gong Q, Song B, Zhao X, Shuai X, Chen X, Ai H, Gu Z. Low molecular weight alkyl-polycation wrapped magnetite nanoparticle clusters as MRI probes for stem cell labeling and in vivo imaging. Biomaterials 2011; 32:528-37. [PMID: 20869767 DOI: 10.1016/j.biomaterials.2010.08.099] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 08/29/2010] [Indexed: 02/08/2023]
Abstract
Superparamagnetic iron oxide (SPIO) nanoparticles are potential probes for noninvasive cell tracking, but the design of safe probes coupled with high labeling efficiency is still an important objective for such application. In this study, an efficient SPIO probe has been developed for mesenchymal stem cells (MSCs) labeling and tracking. Different from many other systems involving high molecular polycations, we chose low molecular weight amphiphilic PEI2k to form stable nanocomplexes with SPIO nanoparticles. The probe can hold multiple SPIO nanoparticles with a controlled clustering structure, leading to much higher T(2) relaxivities compared to single SPIO nanoparticles. Labeled MSCs are unaffected in their viability, proliferation, or differentiation capacity. The iron uptake process in MSCs displays a time- and dose-dependent behavior. Transmission electron microscopy reveals that the nanoprobes are internalized into the cytoplasm of MSCs. Subcutaneous injection of the labeled MSCs dispersed in a collagen type I hydrogel showed strong image contrast against unlabeled cells under a clinical 3T magnetic resonance imaging (MRI) scanner up to 19 days post-transplantation. This study provides an important alternative to label MSCs at optimized low dosages with high efficiency, and the probe may be useful to label other biologically important cells for imaging studies.
Collapse
Affiliation(s)
- Gang Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Effects of electron beam irradiation on chemical composition, antinutritional factors, ruminal degradation and in vitro protein digestibility of canola meal. Radiat Phys Chem Oxf Engl 1993 2010. [DOI: 10.1016/j.radphyschem.2010.07.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
29
|
Madsen B, Britt DW, Griffiths F, McKenna E, Ho CH. Effect of sterilization techniques on the physicochemical properties of polysulfone hollow fibers. J Appl Polym Sci 2010. [DOI: 10.1002/app.32994] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
30
|
Jégoux F, Goyenvalle E, Cognet R, Malard O, Moreau F, Daculsi G, Aguado E. Reconstruction of irradiated bone segmental defects with a biomaterial associating MBCP+(R), microstructured collagen membrane and total bone marrow grafting: an experimental study in rabbits. J Biomed Mater Res A 2010; 91:1160-9. [PMID: 19148925 DOI: 10.1002/jbm.a.32274] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The bone tissue engineering models used today are still a long way from any oncologic application as immediate postimplantation irradiation would decrease their osteoinductive potential. The aim of this study was to reconstruct a segmental critical size defect in a weight-bearing bone irradiated after implantation. Six white New Zealand rabbits were immediately implanted with a biomaterial associating resorbable collagen membrane EZ(R) filled and micro-macroporous biphasic calcium phosphate granules (MBCP+(R)). After a daily schedule of radiation delivery, and within 4 weeks, a total autologous bone marrow (BM) graft was injected percutaneously into the center of the implant. All the animals were sacrificed at 16 weeks. Successful osseous colonization was found to have bridged the entire length of the defects. Identical distribution of bone ingrowth and residual ceramics at the different levels of the implant suggests that the BM graft plays an osteoinductive role in the center of the defect. Periosteum-like formation was observed at the periphery, with the collagen membrane most likely playing a role. This model succeeded in bridging a large segmental defect in weight-bearing bone with immediate postimplantation fractionated radiation delivery. This has significant implications for the bone tissue engineering approach to patients with cancer-related bone defects.
Collapse
|
31
|
Gouk SS, Lim TM, Teoh SH, Sun WQ. Alterations of human acellular tissue matrix by gamma irradiation: Histology, biomechanical property, stability,in vitro cell repopulation, and remodeling. J Biomed Mater Res B Appl Biomater 2007; 84:205-17. [PMID: 17497685 DOI: 10.1002/jbm.b.30862] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AlloDerm, a processed acellular human tissue matrix, is used in a number of surgical applications for tissue repair and regeneration. In the present work, AlloDerm serves as a model system for studying gamma radiation-induced changes in tissue structure and stability as well as the effect of such changes on the cell-matrix interactions, including cell repopulation and matrix remodeling. AlloDerm tissue matrix was treated with 2-30 kGy gamma irradiation at room temperature. Gamma irradiation reduced the swelling of tissue matrix upon rehydration and caused significant structural modifications, including collagen condensation and hole formation in collagen fibres. The tensile strength of AlloDerm increased at low gamma dose but decreased with increasing gamma dosage. The elasticity of irradiated AlloDerm was reduced significantly. Calorimetric study showed that gamma irradiation destabilized the tissue matrix, resulting in greater susceptibility to proteolytic enzyme degradation. Although gamma irradiation did not affect in vitro proliferation of fibroblast cells, it promoted tissue degradation upon cell repopulation and influenced synthesis and deposition of new collagen.
Collapse
Affiliation(s)
- Sok-Siam Gouk
- Department of Biological Sciences, National University of Singapore, Singapore
| | | | | | | |
Collapse
|