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Li S, Zhao F, Tang Y, Zhang Y, Rong H, Liu L, Gao R, Liu X, Huangfu Y, Bai Y, Feng Z, Guo Z, Dong A, Wang W, Kong D, Huang P. Bioinspired, Anticoagulative, 19 F MRI-Visualizable Bilayer Hydrogel Tubes as High Patency Small-Diameter Vascular Grafts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302621. [PMID: 37340585 DOI: 10.1002/smll.202302621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/29/2023] [Indexed: 06/22/2023]
Abstract
The clinical patency of small-diameter vascular grafts (SDVGs) (ID < 6 mm) is limited, with the formation of mural thrombi being a major threat of this limitation. Herein, a bilayered hydrogel tube based on the essential structure of native blood vessels is developed by optimizing the relation between vascular functions and the molecular structure of hydrogels. The inner layer of the SDVGs comprises a zwitterionic fluorinated hydrogel, avoiding the formation of thromboinflammation-induced mural thrombi. Furthermore, the position and morphology of the SDVGs can be visualized via 19 F/1 H magnetic resonance imaging. The outer poly(N-acryloyl glycinamide) hydrogel layer of SDVGs provides matched mechanical properties with native blood vessels through the multiple and controllable intermolecular hydrogen-bond interactions, which can withstand the accelerated fatigue test under pulsatile radial pressure for 380 million cycles (equal to a service life of 10 years in vivo). Consequently, the SDVGs exhibit higher patency (100%) and more stable morphology following porcine carotid artery transplantation for 9 months and rabbit carotid artery transplantation for 3 months. Therefore, such a bioinspired, antithrombotic, and visualizable SDVG presents a promising design approach for long-term patency products and great potential of helping patients with cardiovascular diseases.
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Affiliation(s)
- Shuangyang Li
- Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Feng Zhao
- Chest hospital, Tianjin University, Tianjin, 300222, China
| | - Yipeng Tang
- Chest hospital, Tianjin University, Tianjin, 300222, China
| | - Yiqun Zhang
- Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Hui Rong
- Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Lingyuan Liu
- Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Rui Gao
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Xiang Liu
- Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Yini Huangfu
- Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Yunpeng Bai
- Chest hospital, Tianjin University, Tianjin, 300222, China
| | - Zujian Feng
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Zhigang Guo
- Chest hospital, Tianjin University, Tianjin, 300222, China
| | - Anjie Dong
- Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Frontiers Science Center for Synthetic Biology, Key Laboratory of Systems Bioengineering(MOE), Tianjin University, Tianjin, 300072, China
| | - Weiwei Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Pingsheng Huang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
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Hosseinzadeh S, Shams F, Fattahi R, Nuoroozi G, rostami E, Shahghasempour L, Salehi-Nik N, Bohlouli M, Khojasteh A, Ghasemi N, Peiravi H. Surface Coating of Polyurethane Films with Gelatin, Aspirin and Heparin to Increase the Hemocompatibility of Artificial Vascular Grafts. Adv Pharm Bull 2023; 13:123-133. [PMID: 36721809 PMCID: PMC9871267 DOI: 10.34172/apb.2023.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 10/14/2021] [Accepted: 12/31/2021] [Indexed: 02/03/2023] Open
Abstract
Purpose: A hemocompatible substrate can offer a wonderful facility for nitric oxide (NO) production by vascular endothelial cells in reaction to the inflammation following injuries. NO inhibits platelet aggregation this is especially critical in small-diameter vessels. Methods: The substrate films were made of polyurethane (PU) in a casting process and after plasma treatments, their surface was chemically decorated with polyethylene glycol (PEG) 2000, gelatin, gelatin-aspirin, gelatin-heparin and gelatin-aspirin-heparin. The concentrations of these ingredients were optimized in order to achieve the biocompatible values and the resulting modifications were characterized by water contact angle and Fourier transform infra-red (FTIR) assays. The values of NO production and platelet adhesion were then examined. Results: The water contact angle of the modified surface was reduced to 26±4∘ and the newly developed hydrophilic chemical groups were confirmed by FTIR. The respective concentrations of 0.05 mg/ml and 100 mg/mL were found to be the IC50 values for aspirin and heparin. However, after the surface modification with aspirin, the bioactivity of the substrate increased in compared to the other experimental groups. In addition, there was a synergistic effect between these reagents for NO synthesis. While, heparin inhibited platelet adhesion more than aspirin. Conclusion: Because of the highly hydrophilic nature of heparin, this reagent was hydrolyzed faster than aspirin and therefore its influence on platelet aggregation and cell growth was greater. Taken together, the results give the biocompatible concentrations of both biomolecules that are required for endothelial cell proliferation, NO synthesis and platelet adhesion.
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Affiliation(s)
- Simzar Hosseinzadeh
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Corresponding Authors: Simzar Hosseinzadeh and Nasim Salehi-Nik, ,
| | - Forough Shams
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Roya Fattahi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ghader Nuoroozi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elnaz rostami
- Department of Animal Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - lida Shahghasempour
- Department of Microbiology, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Nasim Salehi-Nik
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Corresponding Authors: Simzar Hosseinzadeh and Nasim Salehi-Nik, ,
| | - Mahboubeh Bohlouli
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arash Khojasteh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nazanin Ghasemi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Habibollah Peiravi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Maharjan S, He JJ, Lv L, Wang D, Zhang YS. Microfluidic Coaxial Bioprinting of Hollow, Standalone, and Perfusable Vascular Conduits. Methods Mol Biol 2022; 2375:61-75. [PMID: 34591299 DOI: 10.1007/978-1-0716-1708-3_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Three-dimensional bioprinting represents promising approach for fabricating standalone and perfusable vascular conduits using biocompatible materials. Here we describe a step-by-step method by using a multichannel coaxial extrusion system (MCCES) and a blend bioink constituting gelatin methacryloyl, sodium alginate, and eight-arm poly(ethylene glycol)-acrylate with a tripentaerythritol core for the fabrication of standalone circumferentially multilayered hollow tubes. This microfluidic bioprinting method allows the fabrication of perfusable vascular conduits with a core lumen, an inner endothelial layer resembling the tunica intima, and an outer smooth muscle cell layer resembling the tunica media of the blood vessel. Biocompatible and perfusable blood vessels with a widely tunable size range in terms of luminal diameters and wall thicknesses can be successfully fabricated using the MCCES.
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Affiliation(s)
- Sushila Maharjan
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA
| | - Jacqueline Jialu He
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA
| | - Li Lv
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA
| | - Di Wang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA.
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Fodor M, Fodor L, Bota O. The role of nanomaterials and nanostructured surfaces for improvement of biomaterial peculiarities in vascular surgery: a review. PARTICULATE SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1080/02726351.2021.1871692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Marius Fodor
- Department of Vascular Surgery, First Surgical Clinic, Emergency District Hospital, Cluj-Napoca, Romania, Cluj-Napoca, Romania
| | - Lucian Fodor
- Department of Plastic Surgery, First Surgical Clinic, Emergency District Hospital, Cluj-Napoca, Romania, Cluj-Napoca, Romania
| | - Olimpiu Bota
- University Center of Orthopaedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
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Transluminal compression increases mechanical stability, stiffness and endothelialization capacity of fibrin-based bioartificial blood vessels. J Mech Behav Biomed Mater 2021; 124:104835. [PMID: 34530301 DOI: 10.1016/j.jmbbm.2021.104835] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 08/15/2021] [Accepted: 09/08/2021] [Indexed: 01/06/2023]
Abstract
Fibrin is used successfully as a biological matrix in various bioengineering approaches. Its unique combination of autologous availability, hemocompatibility and biological activity makes it an almost ideal matrix material for vascular tissue engineering. However, clinical application of fibrin-based bioartificial blood vessels is still limited due to insufficient mechanical stability and stiffness of fibrin matrices. Biomechanical properties of fibrin-based constructs can potentially be modified by adjusting matrix density. Thus, as an attempt to optimize strength and elasticity of fibrin matrices for vascular tissue engineering applications, we developed a simple and reproducible method for transluminal compression of small-diameter fibrin-based vessels: After initial polymerization of high-concentration fibrin matrices in a vascular mold, vessels were compressed using an intraluminal angioplasty balloon. Vessels compacted with different pressures were compared for ultimate strength, elastic and structural properties and cellularization capacity. Transluminal compression increased fibrin network density and facilitated rapid production of homogenous vessels with a length of 10 cm. Compared to non-compressed controls, compacted fibrin vessels showed superior maximal burst pressure (199.8 mmHg vs. 94.0 mmHg), physiological elastic properties similar to the elastic behavior of natural arteries and higher luminal endothelial cell coverage (98.6% vs. 34.6%). Thus, transluminal compaction represents a suitable technique to enhance biomechanical properties of fibrin-based bioartificial vessels while preserving the biological advantages of this promising biomaterial.
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Dynamic flow priming programs allow tuning up the cell layers properties for engineered vascular graft. Sci Rep 2021; 11:14666. [PMID: 34282200 PMCID: PMC8290030 DOI: 10.1038/s41598-021-94023-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 06/29/2021] [Indexed: 12/15/2022] Open
Abstract
Tissue engineered vascular grafts (TEVG) are potentially clear from ethical and epidemiological concerns sources for reconstructive surgery for small diameter blood vessels replacement. Here, we proposed a novel method to create three-layered TEVG on biocompatible glass fiber scaffolds starting from flat sheet state into tubular shape and to train the resulting tissue by our developed bioreactor system. Constructed tubular tissues were matured and trained under 3 types of individual flow programs, and their mechanical and biological properties were analyzed. Training in the bioreactor significantly increased the tissue burst pressure resistance (up to 18 kPa) comparing to untrained tissue. Fluorescent imaging and histological examination of trained vascular tissue revealed that each cell layer has its own individual response to training flow rates. Histological analysis suggested reverse relationship between tissue thickness and shear stress, and the thickness variation profiles were individual between all three types of cell layers. Concluding: a three-layered tissue structure similar to physiological can be assembled by seeding different cell types in succession; the following training of the formed tissue with increasing flow in a bioreactor is effective for promoting cell survival, improving pressure resistance, and cell layer formation of desired properties.
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Li P, Wang Y, Jin X, Dou J, Han X, Wan X, Yuan J, Shen J. Fabrication of PCL/keratin composite scaffolds for vascular tissue engineering with catalytic generation of nitric oxide potential. J Mater Chem B 2021; 8:6092-6099. [PMID: 32555924 DOI: 10.1039/d0tb00857e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tissue-engineered vascular grafts (TEVGs) have been proposed as a promising approach to fulfill the need for small-diameter blood vessel substitutes. However, common failure caused by thrombosis and neointimal proliferation after implantation has restricted their use in the clinic. Herein, a NO-generating scaffold for vascular tissue engineering was developed by coelectrospinning poly(ε-caprolactone) (PCL) with keratin. The morphology and surface chemical composition were characterized via SEM, ATR-FTIR spectroscopy and XPS. The biocomposite scaffold selectively enhanced the adhesion and growth of endothelial cells (ECs) while suppressing the proliferation of smooth muscle cells (SMCs) in the presence of GSH and GSNO due to the catalytic generation of NO. In addition, these mats displayed excellent blood compatibility by prolonging the blood-clotting time. In summary, these NO-generating PCL/keratin scaffolds have potential applications in vascular tissue engineering with rapid endothelialization and reduced SMC proliferation.
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Affiliation(s)
- Pengfei Li
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Yanfang Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Xingxing Jin
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Jie Dou
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Xiao Han
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Xiuzhen Wan
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Jiang Yuan
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
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Bao L, Tang J, Hong FF, Lu X, Chen L. Physicochemical Properties and In Vitro Biocompatibility of Three Bacterial Nanocellulose Conduits for Blood Vessel Applications. Carbohydr Polym 2020; 239:116246. [DOI: 10.1016/j.carbpol.2020.116246] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 03/30/2020] [Accepted: 03/30/2020] [Indexed: 01/02/2023]
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Ilanlou S, Khakbiz M, Amoabediny G, Mohammadi J. Preclinical studies of acellular extracellular matrices as small-caliber vascular grafts. Tissue Cell 2019; 60:25-32. [DOI: 10.1016/j.tice.2019.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 07/28/2019] [Accepted: 07/30/2019] [Indexed: 01/09/2023]
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Krüger-Genge A, Dietze S, Yan W, Liu Y, Fang L, Kratz K, Lendlein A, Jung F. Endothelial cell migration, adhesion and proliferation on different polymeric substrates. Clin Hemorheol Microcirc 2019; 70:511-529. [DOI: 10.3233/ch-189317] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Anne Krüger-Genge
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Stefanie Dietze
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Wan Yan
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
- Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Yue Liu
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
- Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Liang Fang
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Karl Kratz
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
- Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Friedrich Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
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Ezhilarasu H, Sadiq A, Ratheesh G, Sridhar S, Ramakrishna S, Ab Rahim MH, Yusoff MM, Jose R, Reddy VJ. Functionalized core/shell nanofibers for the differentiation of mesenchymal stem cells for vascular tissue engineering. Nanomedicine (Lond) 2018; 14:201-214. [PMID: 30526272 DOI: 10.2217/nnm-2018-0271] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
AIM Atherosclerosis is a common cardiovascular disease causing medical problems globally leading to coronary artery bypass surgery. The present study is to fabricate core/shell nanofibers to encapsulate VEGF for the differentiation of mesenchymal stem cells (MSCs) into smooth muscle cells to develop vascular grafts. MATERIALS & METHODS The fabricated core/shell nanofibers contained polycaprolactone/gelatin as the shell, and silk fibroin/VEGF as the core materials. RESULTS The results observed that the core/shell nanofibers interact to differentiate MSCs into smooth muscle cells by the expression of vascular smooth muscle cell (VSMC) contractile proteins α-actinin, myosin and F-actin. CONCLUSION The functionalized polycaprolactone/gelatin/silk fibroin/VEGF (250 ng) core/shell nanofibers were fabricated for the controlled release of VEGF in a persistent manner for the differentiation of MSCs into smooth muscle cells for vascular tissue engineering.
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Affiliation(s)
- Hariharan Ezhilarasu
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, Faculty of Engineering, National University of Singapore, Singapore
| | - Asif Sadiq
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, Faculty of Engineering, National University of Singapore, Singapore
| | - Greeshma Ratheesh
- Institute of Health & Biomedical Innovation, Science & Engineering Faculty, Queensland University of Technology (QUT), Australia
| | - Sreepathy Sridhar
- Department of Mechanical & Construction Engineering, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, Faculty of Engineering, National University of Singapore, Singapore
| | - Mohd Hasbi Ab Rahim
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia
| | - Mashitah M Yusoff
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia
| | - Rajan Jose
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia
| | - Venugopal Jayarama Reddy
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, Faculty of Engineering, National University of Singapore, Singapore.,Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia
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Ghaleh H, Jalili K, Maher BM, Rahbarghazi R, Mehrjoo M, Bonakdar S, Abbasi F. Biomimetic antifouling PDMS surface developed via well-defined polymer brushes for cardiovascular applications. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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The Effect of Pulsatile Flow on bMSC-Derived Endothelial-Like Cells in a Small-Sized Artificial Vessel Made by 3-Dimensional Bioprinting. Stem Cells Int 2018; 2018:7823830. [PMID: 29765422 PMCID: PMC5932426 DOI: 10.1155/2018/7823830] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/25/2017] [Accepted: 01/15/2018] [Indexed: 01/14/2023] Open
Abstract
Replacement of small-sized vessels is still challenging. This study is aimed at investigating the possibility of small-sized artificial vessels made by 3-dimensional bioprinting and the effect of pulsatile flow on bMSC-derived endothelial-like cells. Cells were harvested from rabbit bone marrow and primary cultured with or without growth factors. Endothelial differentiation was confirmed by the Matrigel tube formation assay, Western blot, and qRT-PCR. In addition, embedment of endothelial-like cells in an artificial vessel was made by 3-dimensional bioprinting, and the pulsatile flow was performed. For pumped and nonpumped groups, qRT-PCR was performed on CD31 and VE-cadherin gene expression. Endothelial-like cells showed increased gene expression of CD31 and VE-cadherin, and tube formation is observed at each week. Endothelial-like cells grow well in a small-sized artificial vessel made by 3-dimensional bioprinting and even express higher endothelial cell markers when they undergo pulsatile flow condition. Moreover, the pulsatile flow condition gives a positive effect for cell observation not only on the sodium alginate hydrogel layer but also on the luminal surface of the artificial vessel wall. We have developed an artificial vessel, which is a mixture of cells and carriers using a 3-dimensional bioprinting method, and applied pulsatile flow using a peristaltic pump, and we also demonstrated cell growth and differentiation into endothelial cells. This study suggests guidelines regarding a small-sized artificial vessel in the field of tissue engineering.
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Gao A, Hang R, Li W, Zhang W, Li P, Wang G, Bai L, Yu XF, Wang H, Tong L, Chu PK. Linker-free covalent immobilization of heparin, SDF-1α, and CD47 on PTFE surface for antithrombogenicity, endothelialization and anti-inflammation. Biomaterials 2017; 140:201-211. [DOI: 10.1016/j.biomaterials.2017.06.023] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/17/2017] [Accepted: 06/18/2017] [Indexed: 01/20/2023]
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Shojaee M, Bashur CA. Compositions Including Synthetic and Natural Blends for Integration and Structural Integrity: Engineered for Different Vascular Graft Applications. Adv Healthc Mater 2017; 6. [PMID: 28371505 DOI: 10.1002/adhm.201700001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 02/13/2017] [Indexed: 11/07/2022]
Abstract
Tissue engineering approaches for small-diameter arteries require a scaffold that simultaneously maintains patency by preventing thrombosis and intimal hyperplasia, maintains its structural integrity after grafting, and allows integration. While synthetic and extracellular matrix-derived materials can provide some of these properties individually, developing a scaffold that provides the balanced properties needed for vascular graft survival in the clinic has been particularly challenging. After 30 years of research, there are now several scaffolds currently in clinical trials. However, these products are either being investigated for large-diameter applications or they require pre-seeding of endothelial cells. This progress report identifies important challenges unique to engineering vascular grafts for high pressure arteries less than 4 mm in diameter (e.g., coronary artery), and discusses limitations with the current usage of the term "small-diameter." Next, the composition and processing techniques used for generating tissue engineered vascular grafts (TEVGs) are discussed, with a focus on the benefits of blended materials. Other scaffolds for non-tissue engineering approaches and stents are also briefly mentioned for comparison. Overall, this progress report discusses the importance of defining the most critical challenges for small diameter TEVGs, developing new scaffolds to provide these properties, and determining acceptable benchmarks for scaffold responses in the body.
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Li Y, Jiang K, Feng J, Liu J, Huang R, Chen Z, Yang J, Dai Z, Chen Y, Wang N, Zhang W, Zheng W, Yang G, Jiang X. Construction of Small-Diameter Vascular Graft by Shape-Memory and Self-Rolling Bacterial Cellulose Membrane. Adv Healthc Mater 2017; 6. [PMID: 28306221 DOI: 10.1002/adhm.201601343] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 02/19/2017] [Indexed: 12/19/2022]
Abstract
Bacterial cellulose (BC) membranes with shape-memory properties allow the rapid preparation of artificial small-diameter blood vessels when combined with microfluidics-based patterning with multiple types of cells. Lyophilization of a wet multilayered rolled BC tube endows it with memory to recover its tubular shape after unrolling. The unrolling of the BC tube yields a flat membrane, and subsequent patterning with endothelial cells, smooth muscle cells, and fibroblast cells is carried out by microfluidics. The cell-laden BC membrane is then rerolled into a multilayered tube. The different cells constituting multiple layers on the tubular wall can imitate blood vessels in vitro. The BC tubes (2 mm) without cell modification, when implanted into the carotid artery of a rabbit, maintain thrombus-free patency 21 d after implantation. This study provides a novel strategy for the rapid construction of multilayered small-diameter BC tubes which may be further developed for potential applications as artificial blood vessels.
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Affiliation(s)
- Ying Li
- CAS Center of Excellence for Nanoscience; Beijing Engineering Research Center for BioNanotechnology for Biological Effects of Nanomaterials and Nanosafety; National Center for NanoScience and Technology; Beijing 100190 China
- National Engineering Research Center for Nano-Medicine; Department of Biomedical Engineering; College of Life Science and Technology; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Kai Jiang
- Institute and Hospital of Hepatobiliary Surgery; Key Laboratory of Digital Hepatobiliary Surgery of Chinese PLA; Chinese PLA Medical School; Chinese PLA General Hospital; Beijing 100190 China
| | - Jian Feng
- Institute and Hospital of Hepatobiliary Surgery; Key Laboratory of Digital Hepatobiliary Surgery of Chinese PLA; Chinese PLA Medical School; Chinese PLA General Hospital; Beijing 100190 China
| | - Jinzhe Liu
- Institute and Hospital of Hepatobiliary Surgery; Key Laboratory of Digital Hepatobiliary Surgery of Chinese PLA; Chinese PLA Medical School; Chinese PLA General Hospital; Beijing 100190 China
| | - Rong Huang
- CAS Center of Excellence for Nanoscience; Beijing Engineering Research Center for BioNanotechnology for Biological Effects of Nanomaterials and Nanosafety; National Center for NanoScience and Technology; Beijing 100190 China
| | - Zhaojun Chen
- College of Chemical Engineering; Qingdao University; Qingdao 266071 China
| | - Junchuan Yang
- CAS Center of Excellence for Nanoscience; Beijing Engineering Research Center for BioNanotechnology for Biological Effects of Nanomaterials and Nanosafety; National Center for NanoScience and Technology; Beijing 100190 China
- National Engineering Research Center for Nano-Medicine; Department of Biomedical Engineering; College of Life Science and Technology; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Zhaohe Dai
- CAS Center of Excellence for Nanoscience; Beijing Engineering Research Center for BioNanotechnology for Biological Effects of Nanomaterials and Nanosafety; National Center for NanoScience and Technology; Beijing 100190 China
| | - Yong Chen
- Ecole Normale Supérieure; 24 rue Lhomond Paris 75231 France
| | - Nuoxin Wang
- CAS Center of Excellence for Nanoscience; Beijing Engineering Research Center for BioNanotechnology for Biological Effects of Nanomaterials and Nanosafety; National Center for NanoScience and Technology; Beijing 100190 China
| | - Wenjin Zhang
- Institute and Hospital of Hepatobiliary Surgery; Key Laboratory of Digital Hepatobiliary Surgery of Chinese PLA; Chinese PLA Medical School; Chinese PLA General Hospital; Beijing 100190 China
| | - Wenfu Zheng
- CAS Center of Excellence for Nanoscience; Beijing Engineering Research Center for BioNanotechnology for Biological Effects of Nanomaterials and Nanosafety; National Center for NanoScience and Technology; Beijing 100190 China
| | - Guang Yang
- National Engineering Research Center for Nano-Medicine; Department of Biomedical Engineering; College of Life Science and Technology; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Xingyu Jiang
- CAS Center of Excellence for Nanoscience; Beijing Engineering Research Center for BioNanotechnology for Biological Effects of Nanomaterials and Nanosafety; National Center for NanoScience and Technology; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
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17
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Loneker AE, Luketich SK, Bernstein D, Kalra A, Nugent AW, D'Amore A, Faulk DM. Mechanical and microstructural analysis of a radially expandable vascular conduit for neonatal and pediatric cardiovascular surgery. J Biomed Mater Res B Appl Biomater 2017; 106:659-671. [PMID: 28296198 DOI: 10.1002/jbm.b.33874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 01/20/2017] [Accepted: 02/20/2017] [Indexed: 01/29/2023]
Abstract
In pediatric cardiovascular surgery, there is a significant need for vascular prostheses that have the potential to grow with the patient following implantation. Current clinical options consist of nonexpanding conduits, requiring repeat surgeries as the patient outgrows the device. To address this issue, PECA Labs has developed a novel ePTFE vascular conduit with the capability of being radially expanded via balloon catheterization. In the described study, a systematic characterization and comparison of two proprietary ePTFE expandable conduits was conducted. Conduit sizes of 8 and 16 mm inner diameters for both conduits were evaluated before and after expansion with a 26 mm balloon. Comprehensive mechanical testing was completed, including quantification of circumferential, and longitudinal tensile strength, suture retention strength, burst strength, water entry pressure, dynamic compliance, and kink radius. Scanning electron microscopy was used to investigate the microstructural properties. Automated extraction of the fiber architectural features for each scanning electron micrograph was achieved with an algorithm for each conduit before and after expansion. Results showed that both conduits were able to expand significantly, to as much as 2.5× their original inner diameter. All mechanical properties were within clinically acceptable values following expansion. Analysis of the microstructure properties of the conduits revealed that the circumferential main angle of orientation, orientation index, and spatial periodicity did not significantly change following expansion, whereas the node area fraction decreased post expansion. Successful proof-of-concept of this novel product represents a critical step toward clinical translation and provides hope for newborns and growing children with congenital heart disease. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 659-671, 2018.
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Affiliation(s)
- Abigail E Loneker
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Penninsylvania
| | - Samuel K Luketich
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Penninsylvania.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Penninsylvania
| | | | - Arush Kalra
- PECA Labs, Pittsburgh, Penninsylvania, 15224
| | - Alan W Nugent
- University of Texas Southwestern Medical Center, Dallas, Texas
| | - Antonio D'Amore
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Penninsylvania.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Penninsylvania.,Department of Surgery, University of Pittsburgh, Pittsburgh, Penninsylvania.,School of Medicine, University of Pittsburgh, Pittsburgh, Penninsylvania.,RiMED Foundation, Palermo, Italy
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18
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Kim DH, Heo SJ, Kang YG, Shin JW, Park SH, Shin JW. Shear stress and circumferential stretch by pulsatile flow direct vascular endothelial lineage commitment of mesenchymal stem cells in engineered blood vessels. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:60. [PMID: 26800691 DOI: 10.1007/s10856-016-5670-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 01/08/2016] [Indexed: 06/05/2023]
Abstract
Understanding the response of mesenchymal stem cells (MSCs) in the dynamic biomechanical vascular environment is important for vascular regeneration. Native vessel biomechanical stimulation in vitro is thought to be the most important contributor to successful endothelial differentiation of MSCs. However, the appropriate biomechanical stimulation conditions for differentiating MSCs into ECs have not been fully investigated. To accomplish an in vivo-like loading environment, a loading system was designed to apply flow induced stress and induce hMSC differentiation in vascular cells. Culturing MSCs on tubular scaffolds under flow-induced shear stress (2.5 dyne/cm(2)) for 4 days results in increased mRNA levels of EC markers (vWF, CD31, VE-cadherin and E-selectin) after one day. Furthermore, we investigated the effects of 2.5 dyne/cm(2) shear stress followed by 3% circumferential stretch for 3 days, and an additional 5% circumferential stretch for 4 days on hMSC differentiation into ECs. EC marker protein levels showed a significant increase after applying 5% stretch, while SMC markers were not present at levels sufficient for detection. Our results demonstrate that the expression of several hMSC EC markers cultured on double-layered tubular scaffolds were upregulated at the mRNA and protein levels with the application of fluid shear stress and cyclic circumferential stretch.
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Affiliation(s)
- Dong Hwa Kim
- Department of Biomedical Engineering, Inje University, Rm #309, BLDG-A, 607 Obang-Dong, Gimhae, Gyeongnam, 621-749, Republic of Korea
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, 36th Street and Hamilton Walk, 424 Stemmler Hall, Philadelphia, PA, 19104-6081, USA
| | - Su-Jin Heo
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, 36th Street and Hamilton Walk, 424 Stemmler Hall, Philadelphia, PA, 19104-6081, USA
| | - Yun Gyeong Kang
- Department of Biomedical Engineering, Inje University, Rm #309, BLDG-A, 607 Obang-Dong, Gimhae, Gyeongnam, 621-749, Republic of Korea
| | - Ji Won Shin
- Department of Biomedical Engineering, Inje University, Rm #309, BLDG-A, 607 Obang-Dong, Gimhae, Gyeongnam, 621-749, Republic of Korea
| | - So Hee Park
- Department of Biomedical Engineering, Inje University, Rm #309, BLDG-A, 607 Obang-Dong, Gimhae, Gyeongnam, 621-749, Republic of Korea
| | - Jung-Woog Shin
- Department of Biomedical Engineering, Inje University, Rm #309, BLDG-A, 607 Obang-Dong, Gimhae, Gyeongnam, 621-749, Republic of Korea.
- Department of Health Science and Technology, Institute of Aged Life Redesign, Cardiovascular and Metabolic Disease Center, UHRC, Inje University, Gimhae, Gyeongnam, 621-749, Republic of Korea.
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19
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Ostdiek AM, Ivey JR, Grant DA, Gopaldas J, Grant SA. An in vivo study of a gold nanocomposite biomaterial for vascular repair. Biomaterials 2015; 65:175-83. [PMID: 26164402 PMCID: PMC4507082 DOI: 10.1016/j.biomaterials.2015.06.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 06/26/2015] [Indexed: 01/05/2023]
Abstract
Currently vascular repairs are treated using synthetic or biologic patches, however these patches have an array of complications, including calcification, rupture, re-stenosis, and intimal hyperplasia. An active patch material composed of decellularized tissue conjugated to gold nanoparticles (AuNPs) was developed and the long term biocompatibility and cellular integration was investigated. Porcine abdominal aortic tissue was decellularized and conjugated with 100 nm gold nanoparticles (AuNP). These patches were placed over a longitudinal arteriotomy of the thoracic aorta in six pigs. The animals were monitored for six months. Gross, histological, and immunohistochemical analyses of the patches were performed after euthanasia. Grossly there was minimal scar tissue with the patches still visible on the outer surface of the vessel. The inner lumen was smooth with a seamless transition from patch to native tissue. Histology demonstrated infiltration of host cells into the patch material. The immunohistochemical results demonstrated an endothelial cell layer forming over the patch within the vessel. Smooth muscle cells were repopulating the biomaterial in all animals. These results demonstrated that the AuNP biomaterial patch integrated well with the host tissue and did not failed over the six month implantation time.
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Affiliation(s)
- A M Ostdiek
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA.
| | - J R Ivey
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA.
| | - D A Grant
- Department of Bioengineering, University of Missouri, Columbia, MO 65211, USA.
| | - J Gopaldas
- Prairie Cardiovascular, Springfield, IL 62701, USA.
| | - S A Grant
- Department of Bioengineering, University of Missouri, Columbia, MO 65211, USA.
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20
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Wu Y, Li L, Chen W, Zeng W, Zeng L, Wen C, Zhu C. Maintaining Moderate Platelet Aggregation and Improving Metabolism of Endothelial Progenitor Cells Increase the Patency Rate of Tissue-Engineered Blood Vessels. Tissue Eng Part A 2015; 21:2001-12. [PMID: 25808811 DOI: 10.1089/ten.tea.2015.0013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Small-diameter tissue-engineered blood vessels (TEBVs) have been associated with low, long-term patency rates primarily because of acute thrombosis in early stages and an inability to achieve early endothelialization. Platelets and endothelial progenitor cells (EPCs) play a key role in these processes. A nano delayed-release 5-aminoimidazole-4-carboxamide 1-β-D-ribofuranoside (AICAR)-bound TEBV was implanted in rat carotid arteries for 3 months. AICAR-bound TEBVs had a high patency rate compared with control TEBVs after 3 months. We found that AICAR maintained moderate platelet aggregation in vivo. In vitro data indicated that AICAR inhibits the release of 5-hydroxytryptamine and thromboxane A2 in activating platelets to reduce platelet aggregation. Then, we confirmed that AICAR strengthens the EPC energy state, which results in earlier endothelialization. The homing, migration, and paracrine function of EPCs were enhanced by AICAR in vitro. Besides, AICAR can contribute to the migration of endothelial cells near the anastomosis. The cellularization of TEBVs at different time points was observed too. In conclusion, our study suggests that the application of nanodelivery material containing AICAR can effectively improve small-diameter TEBVs by maintaining moderate platelet aggregation and improving metabolism of EPCs.
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Affiliation(s)
- Yangxiao Wu
- Key Laboratory for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Third Military Medical University , Chongqing, China
| | - Li Li
- Key Laboratory for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Third Military Medical University , Chongqing, China
| | - Wen Chen
- Key Laboratory for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Third Military Medical University , Chongqing, China
| | - Wen Zeng
- Key Laboratory for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Third Military Medical University , Chongqing, China
| | - Lingqin Zeng
- Key Laboratory for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Third Military Medical University , Chongqing, China
| | - Can Wen
- Key Laboratory for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Third Military Medical University , Chongqing, China
| | - Chuhong Zhu
- Key Laboratory for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Third Military Medical University , Chongqing, China
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21
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Ostdiek AM, Ivey JR, Hansen SA, Gopaldas R, Grant SA. Feasibility of a nanomaterial-tissue patch for vascular and cardiac reconstruction. J Biomed Mater Res B Appl Biomater 2015; 104:449-57. [DOI: 10.1002/jbm.b.33410] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 01/21/2015] [Accepted: 03/04/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Allison M. Ostdiek
- Department of Veterinary Pathobiology; University of Missouri; Columbia Missouri
| | - Jan R. Ivey
- Department of Biomedical Sciences; University of Missouri; Columbia Missouri
| | - Sarah A. Hansen
- Department of Veterinary Pathobiology; University of Missouri; Columbia Missouri
| | | | - Sheila A. Grant
- Department of Bioengineering; University of Missouri; Columbia Missouri
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22
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Chlupac J, Filova E, Havlikova J, Matejka R, Riedel T, Houska M, Brynda E, Pamula E, Rémy M, Bareille R, Fernandez P, Daculsi R, Bourget C, Bacakova L, Bordenave L. The gene expression of human endothelial cells is modulated by subendothelial extracellular matrix proteins: short-term response to laminar shear stress. Tissue Eng Part A 2014; 20:2253-64. [PMID: 24606163 DOI: 10.1089/ten.tea.2013.0153] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Vascular surgery for atherosclerosis is confronted by the lack of a suitable bypass material. Tissue engineering strives to produce bio-artificial conduits to provide resistance to thrombosis. The objectives of our study were to culture endothelial cells (EC) on composite assemblies of extracellular matrix proteins, and to evaluate the cellular phenotype under flow. Cell-adhesive assemblies were fabricated on glass slides as combinations of collagen (Co), laminin (LM), and fibronectin (FN), resulting in three samples: Co, Co/LM, and Co/FN. Surface topography, roughness, and wettability were determined. Human saphenous vein EC were harvested from cardiac patients, cultured on the assemblies and submitted to laminar shear stress (SS) of 12 dyn/cm(2) for 40, 80, and 120 min. Cell retention was assessed and qRT-PCR of adhesion genes (VE-cadherin, vinculin, KDR, CD-31 or PECAM-1, β1-integrins) and metabolic genes (t-PA, NF-κB, eNOS and MMP-1) was performed. Quantitative immunofluorescence of VE cadherin, vinculin, KDR, and vonWillebrand factor was performed after 2 and 6 h of flow. Static samples were excluded from shearing. The cells reached confluence with similar growth curves. The cells on Co/LM and Co/FN were resistant to flow up to 120 min but minor desquamation occurred on Co corresponding with temporary downregulation of VE cadherin and vinculin-mRNA and decreased fluorescence of vinculin. The cells seeded on Co/LM initially more upregulated vinculin-mRNA and also the inflammatory factor NF-κB, and the cells plated on Co/FN changed the expression profile minimally in comparison with the static control. Fluorescence of VE cadherin and vonWillebrand factor was enhanced on Co/FN. The cells cultured on Co/LM and Co/FN increased the vinculin fluorescence and expressed more VE cadherin and KDR-mRNA than the cells on Co. The cells plated on Co/FN upregulated the mRNA of VE cadherin, CD-31, and MMP 1 to a greater extent than the cells on Co/LM and they enhanced the fluorescence of VE cadherin, KDR, and vonWillebrand factor. Some of these changes sustained up to 6 h of flow, as confirmed by immunofluorescence. Combined matrices Co/LM and Co/FN seem to be more suitable for EC seeding and retention under flow. Moreover, Co/FN matrix promoted slightly more favorable cellular phenotype than Co/LM under SS of 2-6 h.
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Affiliation(s)
- Jaroslav Chlupac
- 1 Department of Biomaterials and Tissue Engineering, Institute of Physiology, Academy of Sciences of the Czech Republic , Prague, Czech Republic
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23
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Vascular Tissue Engineering: Recent Advances in Small Diameter Blood Vessel Regeneration. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/923030] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cardiovascular diseases are the leading cause of mortality around the globe. The development of a functional and appropriate substitute for small diameter blood vessel replacement is still a challenge to overcome the main drawbacks of autografts and the inadequate performances of synthetic prostheses made of polyethylene terephthalate (PET, Dacron) and expanded polytetrafluoroethylene (ePTFE, Goretex). Therefore, vascular tissue engineering has become a promising approach for small diameter blood vessel regeneration as demonstrated by the increasing interest dedicated to this field. This review is focused on the most relevant and recent studies concerning vascular tissue engineering for small diameter blood vessel applications. Specifically, the present work reviews research on the development of tissue-engineered vascular grafts made of decellularized matrices and natural and/or biodegradable synthetic polymers and their realization without scaffold.
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24
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Chlupáč J, Filová E, Riedel T, Houska M, Brynda E, Remy-Zolghadri M, Bareille R, Fernandez P, Daculsi R, Bourget C, Bordenave L, Bačáková L. Attachment of human endothelial cells to polyester vascular grafts: pre-coating with adhesive protein assemblies and resistance to short-term shear stress. Physiol Res 2014; 63:167-77. [PMID: 24397801 DOI: 10.33549/physiolres.932577] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Cardiovascular prosthetic bypass grafts do not endothelialize spontaneously in humans, and so they pose a thrombotic risk. Seeding with cells improves their performance, particularly in small-caliber applications. Knitted tubular polyethylene-terephthalate (PET) vascular prostheses (6 mm) with commercial type I collagen (PET/Co) were modified in the lumen by the adsorption of laminin (LM), by coating with a fibrin network (Fb) or a combination of Fb and fibronectin (Fb/FN). Primary human saphenous vein endothelial cells were seeded (1.50 × 10(5)/cm2), cultured for 72 h and exposed to laminar shear stress 15 dyn/cm(2) for 40 and 120 min. The control static grafts were excluded from shearing. The cell adherence after 4 h on PET/Co, PET/Co +LM, PET/Co +Fb and PET/Co +Fb/FN was 22%, 30%, 19% and 27% of seeding, respectively. Compared to the static grafts, the cell density on PET/Co and PET/Co +LM dropped to 61% and 50%, respectively, after 120 min of flow. The cells on PET/Co +Fb and PET/Co +Fb/FN did not show any detachment during 2 h of shear stress. Pre-coating the clinically-used PET/Co vascular prosthesis with LM or Fb/FN adhesive protein assemblies promotes the adherence of endothelium. Cell retention under flow is improved particularly on fibrin-containing (Fb and Fb/FN) surfaces.
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Affiliation(s)
- J Chlupáč
- Department of Biomaterials and Tissue Engineering, Institute of Physiology Academy of Sciences of the Czech Republic, Prague, Czech Republic.
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25
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Seib FP, Herklotz M, Burke KA, Maitz MF, Werner C, Kaplan DL. Multifunctional silk-heparin biomaterials for vascular tissue engineering applications. Biomaterials 2013; 35:83-91. [PMID: 24099708 DOI: 10.1016/j.biomaterials.2013.09.053] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 09/16/2013] [Indexed: 12/16/2022]
Abstract
Over the past 30 years, silk has been proposed for numerous biomedical applications that go beyond its traditional use as a suture material. Silk sutures are well tolerated in humans, but the use of silk for vascular engineering applications still requires extensive biocompatibility testing. Some studies have indicated a need to modify silk to yield a hemocompatible surface. This study examined the potential of low molecular weight heparin as a material for refining silk properties by acting as a carrier for vascular endothelial growth factor (VEGF) and improving silk hemocompatibility. Heparinized silk showed a controlled VEGF release over 6 days; the released VEGF was bioactive and supported the growth of human endothelial cells. Silk samples were then assessed using a humanized hemocompatibility system that employs whole blood and endothelial cells. The overall thrombogenic response for silk was very low and similar to the clinical reference material polytetrafluoroethylene. Despite an initial inflammatory response to silk, apparent as complement and leukocyte activation, the endothelium was maintained in a resting, anticoagulant state. The low thrombogenic response and the ability to control VEGF release support the further development of silk for vascular applications.
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Affiliation(s)
- F Philipp Seib
- Tufts University, Department of Biomedical Engineering, 4 Colby Street, Medford, MA 02155, USA
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26
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Kumar VA, Caves JM, Haller CA, Dai E, Li L, Grainger S, Chaikof EL. Acellular vascular grafts generated from collagen and elastin analogs. Acta Biomater 2013; 9:8067-74. [PMID: 23743129 PMCID: PMC3733560 DOI: 10.1016/j.actbio.2013.05.024] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 05/14/2013] [Accepted: 05/22/2013] [Indexed: 01/10/2023]
Abstract
Tissue-engineered vascular grafts require long fabrication times, in part due to the requirement of cells from a variety of cell sources to produce a robust, load-bearing extracellular matrix. Herein, we propose a design strategy for the fabrication of tubular conduits comprising collagen fiber networks and elastin-like protein polymers to mimic native tissue structure and function. Dense fibrillar collagen networks exhibited an ultimate tensile strength (UTS) of 0.71±0.06 MPa, strain to failure of 37.1±2.2% and Young's modulus of 2.09±0.42 MPa, comparing favorably to a UTS and a Young's modulus for native blood vessels of 1.4-11.1 MPa and 1.5±0.3 MPa, respectively. Resilience, a measure of recovered energy during unloading of matrices, demonstrated that 58.9±4.4% of the energy was recovered during loading-unloading cycles. Rapid fabrication of multilayer tubular conduits with maintenance of native collagen ultrastructure was achieved with internal diameters ranging between 1 and 4mm. Compliance and burst pressures exceeded 2.7±0.3%/100 mmHg and 830±131 mmHg, respectively, with a significant reduction in observed platelet adherence as compared to expanded polytetrafluoroethylene (ePTFE; 6.8±0.05×10(5) vs. 62±0.05×10(5) platelets mm(-2), p<0.01). Using a rat aortic interposition model, early in vivo responses were evaluated at 2 weeks via Doppler ultrasound and CT angiography with immunohistochemistry confirming a limited early inflammatory response (n=8). Engineered collagen-elastin composites represent a promising strategy for fabricating synthetic tissues with defined extracellular matrix content, composition and architecture.
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Affiliation(s)
- Vivek A. Kumar
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
- Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215
- Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA 30332
| | - Jeffrey M. Caves
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
- Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215
| | - Carolyn A. Haller
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
- Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215
| | - Erbin Dai
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Liying Li
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Stephanie Grainger
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
- Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215
| | - Elliot L. Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
- Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215
- Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA 30332
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27
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Wong CS, Liu X, Xu Z, Lin T, Wang X. Elastin and collagen enhances electrospun aligned polyurethane as scaffolds for vascular graft. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1865-1874. [PMID: 23625321 DOI: 10.1007/s10856-013-4937-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 04/19/2013] [Indexed: 06/02/2023]
Abstract
Mismatch in mechanical properties between synthetic vascular graft and arteries contribute to graft failure. The viscoelastic properties of arteries are conferred by elastin and collagen. In this study, the mechanical properties and cellular interactions of aligned nanofibrous polyurethane (PU) scaffolds blended with elastin, collagen or a mixture of both proteins were examined. Elastin softened PU to a peak stress and strain of 7.86 MPa and 112.28 % respectively, which are similar to those observed in blood vessels. Collagen-blended PU increased in peak stress to 28.14 MPa. The growth of smooth muscle cells (SMCs) on both collagen-blended and elastin/collagen-blended scaffold increased by 283 and 224 % respectively when compared to PU. Smooth muscle myosin staining indicated that the cells are contractile SMCs which are favored in vascular tissue engineering. Elastin and collagen are beneficial for creating compliant synthetic vascular grafts as elastin provided the necessary viscoelastic properties while collagen enhanced the cellular interactions.
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MESH Headings
- Blood Vessel Prosthesis
- Cell Proliferation/drug effects
- Cells, Cultured
- Coated Materials, Biocompatible/chemistry
- Coated Materials, Biocompatible/metabolism
- Collagen/metabolism
- Collagen/pharmacology
- Coronary Vessels/cytology
- Elastin/metabolism
- Elastin/pharmacology
- Electroplating/methods
- Humans
- Materials Testing
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/physiology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/physiology
- Polyurethanes/chemistry
- Tissue Scaffolds/chemistry
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Affiliation(s)
- Cynthia S Wong
- Institute for Frontier Materials, Deakin University, Geelong, VIC, 3217, Australia.
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28
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Jia L, Prabhakaran MP, Qin X, Ramakrishna S. Stem cell differentiation on electrospun nanofibrous substrates for vascular tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4640-50. [PMID: 24094171 DOI: 10.1016/j.msec.2013.07.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 06/01/2013] [Accepted: 07/17/2013] [Indexed: 12/16/2022]
Abstract
Nanotechnology has enabled the engineering of a variety of materials to meet the current challenges and requirements in vascular tissue regeneration. In our study, poly-L-lactide (PLLA) and hybrid PLLA/collagen (PLLA/Coll) nanofibers (3:1 and 1:1) with fiber diameters of 210 to 430 nm were fabricated by electrospinning. Their morphological, chemical and mechanical characterizations were carried out using scanning electron microscopy (SEM), attenuated total reflectance Fourier transform infrared (ATR-FTIR), and tensile instrument, respectively. Bone marrow derived mesenchymal stem cells (MSCs) seeded on electrospun nanofibers that are capable of differentiating into vascular cells have great potential for repair of the vascular system. We investigated the potential of MSCs for vascular cell differentiation in vitro on electrospun PLLA/Coll nanofibrous scaffolds using endothelial differentiation media. After 20 days of culture, MSC proliferation on PLLA/Coll(1:1) scaffolds was found 256% higher than the cell proliferation on PLLA scaffolds. SEM images showed that the MSC differentiated endothelial cells on PLLA/Coll scaffolds showed cobblestone morphology in comparison to the fibroblastic type of undifferentiated MSCs. The functionality of the cells in the presence of 'endothelial induction media', was further demonstrated from the immunocytochemical analysis, where the MSCs on PLLA/Coll (1:1) scaffolds differentiated to endothelial cells and expressed the endothelial cell specific proteins such as platelet endothelial cell adhesion molecule-1 (PECAM-1 or CD31) and Von Willebrand factor (vWF). From the results of the SEM analysis and protein expression studies, we concluded that the electrospun PLLA/Coll nanofibers could mimic the native vascular ECM environment and might be promising substrates for potential application towards vascular regeneration.
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Affiliation(s)
- Lin Jia
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, No. 2999 North Renmin Road, Songjiang, Shanghai 201620, China; Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, 2 Engineering Drive 3, Singapore 117576, Singapore
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29
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Gibbons MC, Foley MA, Cardinal KO. Thinking inside the box: keeping tissue-engineered constructs in vitro for use as preclinical models. TISSUE ENGINEERING PART B-REVIEWS 2012; 19:14-30. [PMID: 22800715 DOI: 10.1089/ten.teb.2012.0305] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tissue engineers have made great strides toward the creation of living tissue replacements for a wide range of tissue types and applications, with eventual patient implantation as the primary goal. However, an alternate use of tissue-engineered constructs exists: as in vitro preclinical models for purposes such as drug screening and device testing. Tissue-engineered preclinical models have numerous potential advantages over existing models, including cultivation in three-dimensional geometries, decreased cost, increased reproducibility, precise control over cultivation conditions, and the incorporation of human cells. Over the past decade, a number of researchers have developed and used tissue-engineered constructs as preclinical models for testing pharmaceuticals, gene therapies, stents, and other technologies, with examples including blood vessels, skeletal muscle, bone, cartilage, skin, cardiac muscle, liver, cornea, reproductive tissues, adipose, small intestine, neural tissue, and kidney. The focus of this article is to review accomplishments toward the creation and use of tissue-engineered preclinical models of each of these different tissue types.
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Affiliation(s)
- Michael C Gibbons
- Department of Biomedical and General Engineering, Cal Poly San Luis Obispo, San Luis Obispo, California 93407, USA
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30
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Lee YB, Shin YM, Lee JH, Jun I, Kang JK, Park JC, Shin H. Polydopamine-mediated immobilization of multiple bioactive molecules for the development of functional vascular graft materials. Biomaterials 2012; 33:8343-52. [PMID: 22917738 DOI: 10.1016/j.biomaterials.2012.08.011] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 08/05/2012] [Indexed: 10/28/2022]
Abstract
In this study, we introduced a simple method for polydopamine-mediated immobilization of dual bioactive factors for the preparation of functionalized vascular graft materials. Polydopamine was deposited on elastic and biodegradable poly(lactic acid-co-ɛ-caprolactone) (PLCL) films, and a cell adhesive RGD-containing peptide and basic fibroblast growth factor were subsequently immobilized by simple dipping. We used an enzyme-linked immunosorbent assay and fluorescamine assay to confirm that we had stably immobilized bioactive molecules on the polydopamine-coated PLCL film in a reaction time-dependent manner. When human umbilical vein endothelial cells (HUVEC) were cultured on the prepared substrates, the number of adherent cells and proliferation of HUVEC for up to 14 days were greatest on the film immobilized with dual factors. On the other hand, the film immobilized with RGD peptide exhibited the highest migration speed compared to the other groups. The expression of cluster of differentiation 31 and von Willebrand factor, which indicates maturation of endothelial cells, was highly stimulated in the dual factor-immobilized group, and passively adsorbed factors showed a negligible effect. The immobilization of bioactive molecules inspired by polydopamine was successful, and adhesion, migration, proliferation and differentiation of HUVEC were synergistically accelerated by the presence of multiple signaling factors. Collectively, our results have demonstrated that a simple coating with polydopamine enables the immobilization of multiple bioactive molecules for preparation of polymeric functionalized vascular graft materials.
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Affiliation(s)
- Yu Bin Lee
- Department of Bioengineering, College of Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
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31
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Rémy M, Bareille R, Rerat V, Bourget C, Marchand-Brynaert J, Bordenave L. Polyethylene terephthalate membrane grafted with peptidomimetics: endothelial cell compatibility and retention under shear stress. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 24:269-86. [DOI: 10.1080/09205063.2012.690275] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Murielle Rémy
- b Université de Bordeaux, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
- c INSERM, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
| | - Reine Bareille
- b Université de Bordeaux, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
- c INSERM, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
| | - Vincent Rerat
- a Université catholique de Louvain, Institute of Condensed Matter and Nanosciences, Bâtiment Lavoisier, Place Louis Pasteur 1 (Bte 2) , B-1348, Louvain-la-Neuve , Belgium
| | - Chantal Bourget
- b Université de Bordeaux, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
- c INSERM, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
| | - Jacqueline Marchand-Brynaert
- a Université catholique de Louvain, Institute of Condensed Matter and Nanosciences, Bâtiment Lavoisier, Place Louis Pasteur 1 (Bte 2) , B-1348, Louvain-la-Neuve , Belgium
| | - Laurence Bordenave
- b Université de Bordeaux, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
- c INSERM, Bioingénierie tissulaire , U1026, F-33000, Bordeaux , France
- d INSERM, CIC-IT Biomatériaux, CHU Bordeaux , F-33000, Bordeaux , France
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32
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Successful development of small diameter tissue-engineering vascular vessels by our novel integrally designed pulsatile perfusion-based bioreactor. PLoS One 2012; 7:e42569. [PMID: 22880036 PMCID: PMC3411804 DOI: 10.1371/journal.pone.0042569] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 07/09/2012] [Indexed: 01/04/2023] Open
Abstract
Small-diameter (<4 mm) vascular constructs are urgently needed for patients requiring replacement of their peripheral vessels. However, successful development of constructs remains a significant challenge. In this study, we successfully developed small-diameter vascular constructs with high patency using our integrally designed computer-controlled bioreactor system. This computer-controlled bioreactor system can confer physiological mechanical stimuli and fluid flow similar to physiological stimuli to the cultured grafts. The medium circulating system optimizes the culture conditions by maintaining fixed concentration of O2 and CO2 in the medium flow and constant delivery of nutrients and waste metabolites, as well as eliminates the complicated replacement of culture medium in traditional vascular tissue engineering. Biochemical and mechanical assay of newly developed grafts confirm the feasibility of the bioreactor system for small-diameter vascular engineering. Furthermore, the computer-controlled bioreactor is superior for cultured cell proliferation compared with the traditional non-computer-controlled bioreactor. Specifically, our novel bioreactor system may be a potential alternative for tissue engineering of large-scale small-diameter vascular vessels for clinical use.
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33
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Fioretta ES, Fledderus JO, Burakowska-Meise EA, Baaijens FPT, Verhaar MC, Bouten CVC. Polymer-based Scaffold Designs For In Situ Vascular Tissue Engineering: Controlling Recruitment and Differentiation Behavior of Endothelial Colony Forming Cells. Macromol Biosci 2012; 12:577-90. [DOI: 10.1002/mabi.201100315] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 10/08/2011] [Indexed: 01/22/2023]
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34
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Seib FP, Maitz MF, Hu X, Werner C, Kaplan DL. Impact of processing parameters on the haemocompatibility of Bombyx mori silk films. Biomaterials 2011; 33:1017-23. [PMID: 22079005 DOI: 10.1016/j.biomaterials.2011.10.063] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 10/22/2011] [Indexed: 01/04/2023]
Abstract
Silk has traditionally been used for surgical sutures due to its lasting strength and durability; however, the use of purified silk proteins as a scaffold material for vascular tissue engineering goes beyond traditional use and requires application-orientated biocompatibility testing. For this study, a library of Bombyx mori silk films was generated and exposed to various solvents and treatment conditions to reflect current silk processing techniques. The films, along with clinically relevant reference materials, were exposed to human whole blood to determine silk blood compatibility. All substrates showed an initial inflammatory response comparable to polylactide-co-glycolide (PLGA), and a low to moderate haemostasis response similar to polytetrafluoroethylene (PTFE) substrates. In particular, samples that were water annealed at 25 °C for 6 h demonstrated the best blood compatibility based on haemostasis parameters (e.g. platelet decay, thrombin-antithrombin complex, platelet factor 4, granulocytes-platelet conjugates) and inflammatory parameters (e.g. C3b, C5a, CD11b, surface-associated leukocytes). Multiple factors such as treatment temperature and solvent influenced the biological response, though no single physical parameter such as β-sheet content, isoelectric point or contact angle accurately predicted blood compatibility. These findings, when combined with prior in vivo data on silk, support a viable future for silk-based vascular grafts.
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Affiliation(s)
- F Philipp Seib
- Tufts University, Department of Biomedical Engineering, MA 02155, USA
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35
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Boccafoschi F, Bosetti M, Mosca C, Mantovani D, Cannas M. The role of shear stress on mechanically stimulated engineered vascular substitutes: influence on mechanical and biological properties. J Tissue Eng Regen Med 2011; 6:60-7. [DOI: 10.1002/term.398] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Accepted: 11/11/2010] [Indexed: 01/12/2023]
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36
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Tefft BJ, Kopacz AM, Liu WK, Liu SQ. Enhancing Endothelial Cell Retention on ePTFE Constructs by siRNA-Mediated SHP-1 Gene Silencing. J Nanotechnol Eng Med 2011. [DOI: 10.1115/1.4003273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Polymeric vascular grafts hold great promise for vascular reconstruction, but the lack of endothelial cells renders these grafts susceptible to intimal hyperplasia and restenosis, precluding widespread clinical applications. The purpose of this study is to establish a stable endothelium on expanded polytetrafluoroethylene (ePTFE) membrane by small interfering RNA (siRNA)-induced suppression of the cell adhesion inhibitor SH2 domain-containing protein tyrosine phosphatase-1 (SHP-1). Human umbilical vein endothelial cells (HUVECs) were treated with scrambled siRNA as a control or SHP-1 specific siRNA. Treated cells were seeded onto fibronectin-coated ePTFE scaffolds and exposed to a physiological range of pulsatile fluid shear stresses for 1 h in a variable-width parallel plate flow chamber. Retention of cells was measured and compared between various shear stress levels and between groups treated with scrambled siRNA and SHP-1 specific siRNA. HUVECs seeded on ePTFE membrane exhibited shear stress-dependent retention. Exposure to physiological shear stress (10 dyn/cm2) induced a reduction in the retention of scrambled siRNA treated cells from 100% to 85% at 1 h. Increased shear stress (20 dyn/cm2) further reduced retention of scrambled siRNA treated cells to 55% at 1 h. SHP-1 knockdown mediated by siRNA enhanced endothelial cell retention from approximately 60% to 85% after 1 h of exposure to average shear stresses in the range of 15–30 dyn/cm2. This study demonstrates that siRNA-mediated gene silencing may be an effective strategy for improving the retention of endothelial cells within vascular grafts.
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Affiliation(s)
- Brandon J. Tefft
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Tech E310, Evanston, IL 60208
| | - Adrian M. Kopacz
- Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Tech B224, Evanston, IL 60208
| | - Wing Kam Liu
- Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Tech B224, Evanston, IL 60208
| | - Shu Q. Liu
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Tech E310, Evanston, IL 60208
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37
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Thebaud NB, Bareille R, Remy M, Bourget C, Daculsi R, Bordenave L. Human progenitor-derived endothelial cells vs. venous endothelial cells for vascular tissue engineering: an in vitro study. J Tissue Eng Regen Med 2011; 4:473-84. [PMID: 20112278 DOI: 10.1002/term.261] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The isolation of endothelial progenitor cells from human peripheral blood generates a great hope in vascular tissue engineering because of particular benefit when compared with mature endothelial cells. We explored the capability of progenitor-derived endothelial cells (PDECs) to line fibrin and collagen scaffolds in comparison with human saphenous and umbilical cord vein endothelial cells (HSVECs and HUVECs): (a) in a static situation, allowing definition of the optimal cell culture conditions with different media and cell-seeding densities to check cell behaviour; (b) under shear stress conditions (flow chambers or tubular vascular constructs), allowing investigation of cell response and mRNA expression on both substrates by oligonucleotide microarray analysis and quantitative real-time PCR. Well characterized PDECs: (a) could not be expanded adequately with the usual mature ECs culture media; (b) were able to colonize and grow on fibrin glue; (c) exhibited higher resistance to oxidative stress than HSVECs and HUVECs; (d) withstood physiological shear stress when lining both substrates in flow chambers, and their gene expression was regulated; (e) colonized a collagen-impregnated vascular prosthesis and were able to sense mechanical forces. Our results provide an improved qualification of PDECs for vascular tissue engineering.
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Affiliation(s)
- Noélie B Thebaud
- INSERM, U577 Bordeaux, Université Victor Segalen Bordeaux 2, Bordeaux, F-33076 France
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38
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Moby V, Labrude P, Kadi A, Bordenave L, Stoltz JF, Menu P. Polyelectrolyte multilayer film and human mesenchymal stem cells: An attractive alternative in vascular engineering applications. J Biomed Mater Res A 2010; 96:313-9. [DOI: 10.1002/jbm.a.32981] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Revised: 09/01/2010] [Accepted: 09/02/2010] [Indexed: 01/16/2023]
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39
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Stickler P, De Visscher G, Mesure L, Famaey N, Martin D, Campbell J, Van Oosterwyck H, Meuris B, Flameng W. Cyclically stretching developing tissue in vivo enhances mechanical strength and organization of vascular grafts. Acta Biomater 2010; 6:2448-56. [PMID: 20123137 DOI: 10.1016/j.actbio.2010.01.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 12/08/2009] [Accepted: 01/27/2010] [Indexed: 10/19/2022]
Abstract
Tissue-engineered vascular grafts must have qualities that rival native vasculature, specifically the ability to remodel, the expression of functional endothelial components and a dynamic and functional extracellular matrix (ECM) that resists the forces of the arterial circulation. We have developed a device that when inserted into the peritoneal cavity, attracts cells around a tubular scaffold to generate autologous arterial grafts. The device is capable of cyclically stretching (by means of a pulsatile pump) developing tissue to increase the mechanical strength of the graft. Pulsed (n=8) and unpulsed (n=8) devices were implanted for 10 days in Lovenaar sheep (n=8). Pulsation occurred for a period of 5-8 days before harvest. Thick unadhered autologous tissue with cells residing in a collagen ECM was produced in all devices. Collagen organization was greater in the circumferential direction of pulsed tissue. Immunohistochemical labelling revealed the hematopoietic origin of >90% cells and a significantly higher coexpression with vimentin in pulsed tissue. F-actin expression, mechanical failure strength and strain were also significantly increased by pulsation. Moreover, tissue could be grafted as carotid artery patches. This paper shows that unadhered tissue tubes with increased mechanical strength and differentiation in response to pulsation can be produced with every implant after a period of 10 days. However, these tissue tubes require a more fine-tuned exposure to pulsation to be suitable for use as vascular grafts.
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40
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Jie Li, Lu WM, Li XX, Wang SM, Yu JX, Zhu YF, Liu DY, Huang MQ. Intensive statin therapy: a favorable adjunct to the improvement of small-diameter vascular grafts. Angiology 2010; 61:427-36. [PMID: 20395233 DOI: 10.1177/0003319709356422] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To assess the effect of intensive statins therapy on the outcome of small-diameter vascular prosthesis, we investigated whether atorvastatin treatment (30 mg/d) could accelerate the re-endothelialization process and improve the patency rate in a canine infrarenal abdominal aorta-expanded polytetrafluoroethylene (ePTFE) bypass model. Furthermore, we also evaluated the effect of atorvastatin on the migratory and adherent capacity of circulating endothelial progenitor cells (EPCs) in vitro. Improved patency was confirmed by Doppler sonography and arteriography. Histological and scanning electron microscopy illustrated enhanced re-endothelialization process. Treatment with atorvastatin enhanced the circulating pool of EPCs with fortified migratory and adherent capacity. Reverse transcriptase-polymerase chain reaction (RT-PCR) analysis showed that atorvastatin treatment increased endothelial nitric oxide synthase (eNOS) and kinase insert domain receptor (KDR) messenger RNA (mRNA) expression in cultured EPCs and neointima. In conclusion, intensive statin therapy could be considered a favorable option to improve small-diameter vascular graft patency.
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Affiliation(s)
- Jie Li
- Department of Vascular Surgery, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.
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41
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You Q, Wang F, Duan L, Du X, Xiao M, Shen Z. Construction of Small-Caliber, Polydiaxanone Cyclohexanone Vascular Stents. Cell Biochem Biophys 2010; 57:35-43. [DOI: 10.1007/s12013-010-9081-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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42
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Kelm JM, Lorber V, Snedeker JG, Schmidt D, Broggini-Tenzer A, Weisstanner M, Odermatt B, Mol A, Zünd G, Hoerstrup SP. A novel concept for scaffold-free vessel tissue engineering: self-assembly of microtissue building blocks. J Biotechnol 2010; 148:46-55. [PMID: 20223267 DOI: 10.1016/j.jbiotec.2010.03.002] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 02/28/2010] [Accepted: 03/02/2010] [Indexed: 10/19/2022]
Abstract
Current scientific attempts to generate in vitro tissue-engineered living blood vessels (TEBVs) show substantial limitations, thereby preventing routine clinical use. In the present report, we describe a novel biotechnology concept to create living small diameter TEBV based exclusively on microtissue self-assembly (living cellular re-aggregates). A novel bioreactor was designed to assemble microtissues in a vascular shape and apply pulsatile flow and circumferential mechanical stimulation. Microtissues composed of human artery-derived fibroblasts (HAFs) and endothelial cells (HUVECs) were accumulated and cultured for 7 and 14 days under pulsatile flow/mechanical stimulation or static culture conditions with a diameter of 3mm and a wall thickness of 1mm. The resulting vessels were analyzed by immunohistochemistry for extracellular matrix (ECM) and cell phenotype (von Willebrand factor, alpha-SMA, Ki67, VEGF). Self-assembled microtissues composed of fibroblasts displayed significantly accelerated ECM formation compared to monolayer cell sheets. Accumulation of vessel-like tissue occurred within 14 days under both, static and flow/mechanical stimulation conditions. A layered tissue formation was observed only in the dynamic group, as indicated by luminal aligned alpha-SMA positive fibroblasts. We could demonstrate that self-assembled cell-based microtissues can be used to generate small diameter TEBV. The significant enhancement of ECM expression and maturation, together with the pre-vascularization capacity makes this approach highly attractive in terms of generating functional small diameter TEBV devoid of any foreign material.
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Affiliation(s)
- Jens M Kelm
- Regenerative Medicine Program, Department of Surgical Research, University of Zürich, CH-8091 Zürich, Switzerland.
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43
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Coatrieux JL, Moreau-Gaudry A, Mabo P, Bordenave L, Logier R, Annane D, Patat F, Etievent PJ, Pasquier C. Les centres d’investigation clinique–innovation technologique : des instruments pour les technologies pour la santé. Ing Rech Biomed 2010. [DOI: 10.1016/j.irbm.2009.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Trommelmans L, Selling J, Dierickx K. Is tissue engineering a new paradigm in medicine? Consequences for the ethical evaluation of tissue engineering research. MEDICINE, HEALTH CARE, AND PHILOSOPHY 2009; 12:459-467. [PMID: 19629749 DOI: 10.1007/s11019-009-9192-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2008] [Accepted: 01/31/2009] [Indexed: 05/28/2023]
Abstract
Ex-vivo tissue engineering is a quickly developing medical technology aiming to regenerate tissue through the introduction of an ex-vivo created tissue construct instead of restoring the damaged tissue to some level of functionality. Tissue engineering is considered by some as a new medical paradigm. We analyse this claim and identify tissue engineering's fundamental characteristics, focusing on the aim of the intervention and on the complexity and continuity of the process. We inquire how these features have an impact not only on the scientific research itself but also on the ethical evaluation of this research. We suggest that viewing tissue engineering as a new medical paradigm allows us to develop a wider perspective for successful investigation instead of focusing on isolated steps of the tissue engineering process in an anecdotal way, which may lead to an inadequate ethical evaluation. We argue that the concept of tissue engineering as a paradigm may benefit the way we address the ethical challenges presented by tissue engineering.
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Affiliation(s)
- Leen Trommelmans
- Centre for Biomedical Ethics and Law, KU Leuven, Kapucijnenvoer 35/3, Box 7001, 3000, Leuven, Belgium.
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45
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Bérard X, Rémy-Zolghadri M, Bourget C, Turner N, Bareille R, Daculsi R, Bordenave L. Capability of human umbilical cord blood progenitor-derived endothelial cells to form an efficient lining on a polyester vascular graft in vitro. Acta Biomater 2009; 5:1147-57. [PMID: 18996071 DOI: 10.1016/j.actbio.2008.10.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 10/01/2008] [Accepted: 10/01/2008] [Indexed: 01/17/2023]
Abstract
One of the goals of vascular tissue engineering is to create functional conduits for small-diameter bypass grafting. The present biocompatibility study was undertaken to check the ability of cord blood progenitor-derived endothelial cells (PDECs) to take the place of endothelial cells in vascular tissue engineering. After isolation, culture and characterization of endothelial progenitor cells, the following parameters were explored, with a commercial knitted polyester prosthesis (Polymaille C, Laboratoires Pérouse, France) impregnated with collagen: cell adhesion and proliferation, colonization, cell retention on exposure to flow, and the ability of PDECs to be regulated by arterial shear stress via mRNA levels. PDECs were able to adhere to commercial collagen-coated vascular grafts in serum-free conditions, and were maintained but did not proliferate when seeded at 2.0 x 10(5) cm(-2). Cellularized conduits were analyzed by histology and histochemical staining, demonstrating collagen impregnation and the endothelial characteristics of the colonizing cells. Thirty-six hours after cell seeding the grafts were maintained for 6 h of either static conditions (controls) or application of pulsatile laminar shear stress, which restored the integrity of the monolayer. Finally, quantitative real-time RT-PCR analysis performed at 4 and 8 h from cells lining grafts showed that MMP1 mRNA only was increased at 4h whereas vWF, VE-cadherin and KDR were not significantly modified at 4 and 8 h. Our results show that human cord blood PDECs are capable of forming an efficient lining and to withstand shear stress.
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Affiliation(s)
- Xavier Bérard
- INSERM, U577, Bordeaux and Université Victor Segalen Bordeaux 2, UMR-577, Bordeaux F-33076, France
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46
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Konig G, McAllister TN, Dusserre N, Garrido SA, Iyican C, Marini A, Fiorillo A, Avila H, Wystrychowski W, Zagalski K, Maruszewski M, Jones AL, Cierpka L, de la Fuente LM, L'Heureux N. Mechanical properties of completely autologous human tissue engineered blood vessels compared to human saphenous vein and mammary artery. Biomaterials 2008; 30:1542-50. [PMID: 19111338 DOI: 10.1016/j.biomaterials.2008.11.011] [Citation(s) in RCA: 373] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2008] [Accepted: 11/06/2008] [Indexed: 10/21/2022]
Abstract
We have previously reported the initial clinical feasibility with our small diameter tissue engineered blood vessel (TEBV). Here we present in vitro results of the mechanical properties of the TEBVs of the first 25 patients enrolled in an arterio-venous (A-V) shunt safety trial, and compare these properties with those of risk-matched human vein and artery. TEBV average burst pressures (3490+/-892 mmHg, n=230) were higher than native saphenous vein (SV) (1599+/-877 mmHg, n=7), and not significantly different from native internal mammary artery (IMA) (3196+/-1264 mmHg, n=16). Suture retention strength for the TEBVs (152+/-50 gmf) was also not significantly different than IMA (138+/-50 gmf). Compliance for the TEBVs prior to implantation (3.4+/-1.6%/100 mmHg) was lower than IMA (11.5+/-3.9%/100 mmHg). By 6 months post-implant, the TEBV compliance (8.8+/-4.2%/100 mmHg, n=5) had increased to values comparable to IMA, and showed no evidence of dilation or aneurysm formation. With clinical time points beyond 21 months as an A-V shunt without intervention, the mechanical tests and subsequent lot release criteria reported here would seem appropriate minimum standards for clinical use of tissue engineered vessels.
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Affiliation(s)
- Gerhardt Konig
- Cytograft Tissue Engineering, 3 Hamilton Landing, Novato, CA 94949, USA
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