1
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Wang H, Huddleston S, Yang J, Ameer GA. Enabling Proregenerative Medical Devices via Citrate-Based Biomaterials: Transitioning from Inert to Regenerative Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2306326. [PMID: 38043945 DOI: 10.1002/adma.202306326] [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: 06/29/2023] [Revised: 10/03/2023] [Indexed: 12/05/2023]
Abstract
Regenerative medicine aims to restore tissue and organ function without the use of prosthetics and permanent implants. However, achieving this goal has been elusive, and the field remains mostly an academic discipline with few products widely used in clinical practice. From a materials science perspective, barriers include the lack of proregenerative biomaterials, a complex regulatory process to demonstrate safety and efficacy, and user adoption challenges. Although biomaterials, particularly biodegradable polymers, can play a major role in regenerative medicine, their suboptimal mechanical and degradation properties often limit their use, and they do not support inherent biological processes that facilitate tissue regeneration. As of 2020, nine synthetic biodegradable polymers used in medical devices are cleared or approved for use in the United States of America. Despite the limitations in the design, production, and marketing of these devices, this small number of biodegradable polymers has dominated the resorbable medical device market for the past 50 years. This perspective will review the history and applications of biodegradable polymers used in medical devices, highlight the need and requirements for regenerative biomaterials, and discuss the path behind the recent successful introduction of citrate-based biomaterials for manufacturing innovative medical products aimed at improving the outcome of musculoskeletal surgeries.
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Affiliation(s)
- Huifeng Wang
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Samantha Huddleston
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Jian Yang
- Biomedical Engineering Program, School of Engineering, Westlake University, Hangzhou, Zhejiang, 310030, China
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China
| | - Guillermo A Ameer
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
- International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
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2
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Zhao Y, Zhong W. Recent Progress in Advanced Polyester Elastomers for Tissue Engineering and Bioelectronics. Molecules 2023; 28:8025. [PMID: 38138515 PMCID: PMC10745526 DOI: 10.3390/molecules28248025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Polyester elastomers are highly flexible and elastic materials that have demonstrated considerable potential in various biomedical applications including cardiac, vascular, neural, and bone tissue engineering and bioelectronics. Polyesters are desirable candidates for future commercial implants due to their biocompatibility, biodegradability, tunable mechanical properties, and facile synthesis and fabrication methods. The incorporation of bioactive components further improves the therapeutic effects of polyester elastomers in biomedical applications. In this review, novel structural modification methods that contribute to outstanding mechanical behaviors of polyester elastomers are discussed. Recent advances in the application of polyester elastomers in tissue engineering and bioelectronics are outlined and analyzed. A prospective of the future research and development on polyester elastomers is also provided.
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Affiliation(s)
- Yawei Zhao
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
| | - Wen Zhong
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
- Department of Medical Microbiology, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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3
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Okhovatian S, Shakeri A, Huyer LD, Radisic M. Elastomeric Polyesters in Cardiovascular Tissue Engineering and Organs-on-a-Chip. Biomacromolecules 2023; 24:4511-4531. [PMID: 37639715 PMCID: PMC10915885 DOI: 10.1021/acs.biomac.3c00387] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Cardiovascular tissue constructs provide unique design requirements due to their functional responses to substrate mechanical properties and cyclic stretching behavior of cardiac tissue that requires the use of durable elastic materials. Given the diversity of polyester synthesis approaches, an opportunity exists to develop a new class of biocompatible, elastic, and immunomodulatory cardiovascular polymers. Furthermore, elastomeric polyester materials have the capability to provide tailored biomechanical synergy with native tissue and hence reduce inflammatory response in vivo and better support tissue maturation in vitro. In this review, we highlight underlying chemistry and design strategies of polyester elastomers optimized for cardiac tissue scaffolds. The major advantages of these materials such as their tunable elasticity, desirable biodegradation, and potential for incorporation of bioactive compounds are further expanded. Unique fabrication methods using polyester materials such as micromolding, 3D stamping, electrospinning, laser ablation, and 3D printing are discussed. Moreover, applications of these biomaterials in cardiovascular organ-on-a-chip devices and patches are analyzed. Finally, we outline unaddressed challenges in the field that need further study to enable the impactful translation of soft polyesters to clinical applications.
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Affiliation(s)
- Sargol Okhovatian
- Institute of Biomaterials Engineering; University of Toronto; Toronto; Ontario, M5S 3G9; Canada
- Toronto General Research Institute, Toronto; Ontario, M5G 2C4; Canada
| | - Amid Shakeri
- Institute of Biomaterials Engineering; University of Toronto; Toronto; Ontario, M5S 3G9; Canada
- Toronto General Research Institute, Toronto; Ontario, M5G 2C4; Canada
| | - Locke Davenport Huyer
- Department of Applied Oral Sciences, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
- School of Biomedical Engineering, Faculties of Medicine and Engineering, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
- Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Milica Radisic
- Institute of Biomaterials Engineering; University of Toronto; Toronto; Ontario, M5S 3G9; Canada
- Toronto General Research Institute, Toronto; Ontario, M5G 2C4; Canada
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; Toronto; Ontario, M5S 3E5; Canada
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4
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Flis A, Trávníčková M, Koper F, Knap K, Kasprzyk W, Bačáková L, Pamuła E. Poly(octamethylene citrate) Modified with Glutathione as a Promising Material for Vascular Tissue Engineering. Polymers (Basel) 2023; 15:polym15051322. [PMID: 36904563 PMCID: PMC10006902 DOI: 10.3390/polym15051322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023] Open
Abstract
One of the major goals of vascular tissue engineering is to develop much-needed materials that are suitable for use in small-diameter vascular grafts. Poly(1,8-octamethylene citrate) can be considered for manufacturing small blood vessel substitutes, as recent studies have demonstrated that this material is cytocompatible with adipose tissue-derived stem cells (ASCs) and favors their adhesion and viability. The work presented here is focused on modifying this polymer with glutathione (GSH) in order to provide it with antioxidant properties, which are believed to reduce oxidative stress in blood vessels. Cross-linked poly(1,8-octamethylene citrate) (cPOC) was therefore prepared by polycondensation of citric acid and 1,8-octanediol at a 2:3 molar ratio of the reagents, followed by in-bulk modification with 0.4, 0.8, 4 or 8 wt.% of GSH and curing at 80 °C for 10 days. The chemical structure of the obtained samples was examined by FTIR-ATR spectroscopy, which confirmed the presence of GSH in the modified cPOC. The addition of GSH increased the water drop contact angle of the material surface and lowered the surface free energy values. The cytocompatibility of the modified cPOC was evaluated in direct contact with vascular smooth-muscle cells (VSMCs) and ASCs. The cell number, the cell spreading area and the cell aspect ratio were measured. The antioxidant potential of GSH-modified cPOC was measured by a free radical scavenging assay. The results of our investigation indicate the potential of cPOC modified with 0.4 and 0.8 wt.% of GSH to produce small-diameter blood vessels, as the material was found to: (i) have antioxidant properties, (ii) support VSMC and ASC viability and growth and (iii) provide an environment suitable for the initiation of cell differentiation.
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Affiliation(s)
- Agata Flis
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, Poland
- Correspondence: (A.F.); (E.P.)
| | - Martina Trávníčková
- Laboratory of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Filip Koper
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, Poland
| | - Karolina Knap
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, Poland
| | - Wiktor Kasprzyk
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, Poland
| | - Lucie Bačáková
- Laboratory of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Elżbieta Pamuła
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, Poland
- Correspondence: (A.F.); (E.P.)
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5
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Meng Y, Zhai H, Zhou Z, Wang X, Han J, Feng W, Huang Y, Wang Y, Bai Y, Zhou J, Quan D. Three dimensional
printable multi‐arms poly(
CL‐
co
‐TOSUO
) for resilient biodegradable elastomer. JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1002/pol.20220700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Affiliation(s)
- Yue Meng
- GD HPPC and PCFM Lab, School of Chemistry Sun Yat‐sen University Guangzhou China
| | - Hong Zhai
- GD HPPC and PCFM Lab, School of Chemistry Sun Yat‐sen University Guangzhou China
| | - Ziting Zhou
- GD Functional Biomaterials Engineering Technology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering Sun Yat‐sen University Guangzhou China
| | - Xiaoying Wang
- School of Biomedical Engineering Jinan University Guangzhou China
| | - Jiandong Han
- GD Functional Biomaterials Engineering Technology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering Sun Yat‐sen University Guangzhou China
| | - WenJuan Feng
- GD HPPC and PCFM Lab, School of Chemistry Sun Yat‐sen University Guangzhou China
| | - Yuxin Huang
- GD HPPC and PCFM Lab, School of Chemistry Sun Yat‐sen University Guangzhou China
| | - Yuan Wang
- GD Functional Biomaterials Engineering Technology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering Sun Yat‐sen University Guangzhou China
| | - Ying Bai
- GD Functional Biomaterials Engineering Technology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering Sun Yat‐sen University Guangzhou China
| | - Jing Zhou
- GD Functional Biomaterials Engineering Technology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering Sun Yat‐sen University Guangzhou China
| | - Daping Quan
- GD Functional Biomaterials Engineering Technology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering Sun Yat‐sen University Guangzhou China
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6
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Asgharnejad-Laskoukalayeh M, Golbaten-Mofrad H, Jafari SH, Seyfikar S, Yousefi Talouki P, Jafari A, Goodarzi V, Zamanlui S. Preparation and characterization of a new sustainable bio-based elastomer nanocomposites containing poly(glycerol sebacate citrate)/chitosan/n-hydroxyapatite for promising tissue engineering applications. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:2385-2405. [PMID: 35876727 DOI: 10.1080/09205063.2022.2104600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Poly (glycerol sebacate citrate) (PGSC) has potential applications in tissue engineering due to its biodegradability and suitable elasticity. However, its applications are restricted owing to its acidity and high degradation rate. In this study, a new bio-nanocomposite based on PGSC has been synthesized by incorporating chitosan (CS) and various concentrations of hydroxyapatite nanoparticles (n-HA). It is assumed that the basicity of a CS and hydroxyl groups of n-HA will reduce the acidity of PGSC and control the rate of degradation. Also, the biocompatibility of n-HA and inherent hydrophilicity of CS can improve cell adhesion and proliferation of PGSC-based scaffolds. FTIR, XRD, FESEM, and EDX tests confirmed the synthesis of these nanocomposites and the interaction between each of the components. The results of the DMTA test also indicated the elastic behavior of the samples embedded with n-HA. The hydrophilicity assay demonstrated that the water contact angle of the scaffolds decreased as the concentration of n-HA augmented, and it reached the value of 44 ± 0.9° for nanocomposite containing 5 wt.% n-HA. The degradation rate of all PGSC nanocomposites was reduced due to the anionic groups of n-HA and CS. TGA assay indicated that the incorporation of n-HA led to the enhancement of scaffolds' thermal stability. Furthermore, the synergistic effect of CS and n-HA on the enhancement of protein adsorption and cell proliferation was confirmed through protein adhesion and MTT assay, respectively. Consequently, the addition of n-HA and CS perform the new bio-nanocomposites scaffolds based on PGSC with sufficient hydrophilicity, flexibility, and thermal stability in tissue engineering applications.
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Affiliation(s)
| | - Hooman Golbaten-Mofrad
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Seyed Hassan Jafari
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Saba Seyfikar
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | | | - Aliakbar Jafari
- Department of Polymer Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Vahabodin Goodarzi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Soheila Zamanlui
- Department of Biomedical Engineering, Islamic Azad University, Tehran, Iran.,Stem Cells Research Center, Tissue Engineering and Regenerative Medicine Institute, Islamic Azad University, Tehran, Iran
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7
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Huddleston SE, Duan C, Ameer GA. Azo polymerization of citrate‐based biomaterial‐ceramic composites at physiological temperatures. NANO SELECT 2022. [DOI: 10.1002/nano.202200080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
| | - Chongwen Duan
- Department of Surgery Feinberg School of Medicine Northwestern University Chicago Illinois USA
| | - Guillermo A. Ameer
- Center for Advanced Regenerative Engineering (CARE) Evanston Illinois USA
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8
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Chen S, Wu Z, Chu C, Ni Y, Neisiany RE, You Z. Biodegradable Elastomers and Gels for Elastic Electronics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105146. [PMID: 35212474 PMCID: PMC9069371 DOI: 10.1002/advs.202105146] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/05/2022] [Indexed: 05/30/2023]
Abstract
Biodegradable electronics are considered as an important bio-friendly solution for electronic waste (e-waste) management, sustainable development, and emerging implantable devices. Elastic electronics with higher imitative mechanical characteristics of human tissues, have become crucial for human-related applications. The convergence of biodegradability and elasticity has emerged a new paradigm of next-generation electronics especially for wearable and implantable electronics. The corresponding biodegradable elastic materials are recognized as a key to drive this field toward the practical applications. The review first clarifies the relevant concepts including biodegradable and elastic electronics along with their general design principles. Subsequently, the crucial mechanisms of the degradation in polymeric materials are discussed in depth. The diverse types of biodegradable elastomers and gels for electronics are then summarized. Their molecular design, modification, processing, and device fabrication especially the structure-properties relationship as well as recent advanced are reviewed in detail. Finally, the current challenges and the future directions are proposed. The critical insights of biodegradability and elastic characteristics in the elastomers and gel allows them to be tailored and designed more effectively for electronic applications.
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Affiliation(s)
- Shuo Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringInstitute of Functional MaterialsShanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Institute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society)Shanghai201620P. R. China
| | - Zekai Wu
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringInstitute of Functional MaterialsShanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Institute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society)Shanghai201620P. R. China
| | - Chengzhen Chu
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringInstitute of Functional MaterialsShanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Institute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society)Shanghai201620P. R. China
| | - Yufeng Ni
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringInstitute of Functional MaterialsShanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Institute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society)Shanghai201620P. R. China
| | - Rasoul Esmaeely Neisiany
- Department of Materials and Polymer EngineeringFaculty of EngineeringHakim Sabzevari UniversitySabzevar9617976487Iran
| | - Zhengwei You
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringInstitute of Functional MaterialsShanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Institute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society)Shanghai201620P. R. China
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9
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Lynch RI, Lavelle EC. Immuno-modulatory biomaterials as anti-inflammatory therapeutics. Biochem Pharmacol 2022; 197:114890. [PMID: 34990595 DOI: 10.1016/j.bcp.2021.114890] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 12/07/2021] [Accepted: 12/07/2021] [Indexed: 12/16/2022]
Abstract
Biocompatible and biodegradable biomaterials are used extensively in regenerative medicine and serve as a tool for tissue replacement, as a platform for regeneration of injured tissue, and as a vehicle for delivery of drugs. One of the key factors that must be addressed in developing successful biomaterial-based therapeutics is inflammation. Whilst inflammation is initially essential for wound healing; bringing about clearance of debris and infection, prolonged inflammation can result in delayed wound healing, rejection of the biomaterial, further tissue damage and increased scarring and fibrosis. In this context, the choice of biomaterial must be considered carefully to minimise further induction of inflammation. Here we address the ability of the biomaterials themselves to modulate inflammatory responses and outline how the physico-chemical properties of the materials impact on their pro and anti-inflammatory properties (Fig. 1).
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Affiliation(s)
- Roisin I Lynch
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, D02R590, Dublin 2, Ireland
| | - Ed C Lavelle
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, D02R590, Dublin 2, Ireland.
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10
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Turner B, Ramesh S, Menegatti S, Daniele M. Resorbable elastomers for implantable medical devices: highlights and applications. POLYM INT 2021. [DOI: 10.1002/pi.6349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Brendan Turner
- Joint Department of Biomedical Engineering North Carolina State University and University of Chapel Hill Raleigh NC USA
- Department of Chemical and Biomolecular Engineering North Carolina State University Raleigh NC USA
| | - Srivatsan Ramesh
- Department of Chemical and Biomolecular Engineering North Carolina State University Raleigh NC USA
| | - Stefano Menegatti
- Department of Chemical and Biomolecular Engineering North Carolina State University Raleigh NC USA
| | - Michael Daniele
- Joint Department of Biomedical Engineering North Carolina State University and University of Chapel Hill Raleigh NC USA
- Department of Electrical and Computer Engineering North Carolina State University Raleigh NC USA
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11
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Liu X, Liu S, Li K, Feng S, Fan Y, Peng L, Wang X, Chen D, Xiong C, Bai W, Zhang L. Preparation and degradation characteristics of biodegradable elastic poly (1,3-trimethylene carbonate) network. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Oral wound healing models and emerging regenerative therapies. Transl Res 2021; 236:17-34. [PMID: 34161876 PMCID: PMC8380729 DOI: 10.1016/j.trsl.2021.06.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/07/2021] [Accepted: 06/15/2021] [Indexed: 12/21/2022]
Abstract
Following injury, the oral mucosa undergoes complex sequences of biological healing processes to restore homeostasis. While general similarities exist, there are marked differences in the genomics and kinetics of wound healing between the oral cavity and cutaneous epithelium. The lack of successful therapy for oral mucosal wounds has influenced clinicians to explore alternative treatments and potential autotherapies to enhance intraoral healing. The present in-depth review discusses current gold standards for oral mucosal wound healing and compares endogenous factors that dictate the quality of tissue remodeling. We conducted a review of the literature on in vivo oral wound healing models and emerging regenerative therapies published during the past twenty years. Studies were evaluated by injury models, therapy interventions, and outcome measures. The success of therapeutic approaches was assessed, and research outcomes were compared based on current hallmarks of oral wound healing. By leveraging therapeutic advancements, particularly within in cell-based biomaterials and immunoregulation, there is great potential for translational therapy in oral tissue regeneration.
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13
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Interfacial Compatibilization into PLA/Mg Composites for Improved In Vitro Bioactivity and Stem Cell Adhesion. Molecules 2021; 26:molecules26195944. [PMID: 34641488 PMCID: PMC8512483 DOI: 10.3390/molecules26195944] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/21/2021] [Accepted: 09/27/2021] [Indexed: 01/22/2023] Open
Abstract
The present work highlights the crucial role of the interfacial compatibilization on the design of polylactic acid (PLA)/Magnesium (Mg) composites for bone regeneration applications. In this regard, an amphiphilic poly(ethylene oxide-b-L,L-lactide) diblock copolymer with predefined composition was synthesised and used as a new interface to provide physical interactions between the metallic filler and the biopolymer matrix. This strategy allowed (i) overcoming the PLA/Mg interfacial adhesion weakness and (ii) modulating the composite hydrophilicity, bioactivity and biological behaviour. First, a full study of the influence of the copolymer incorporation on the morphological, wettability, thermal, thermo-mechanical and mechanical properties of PLA/Mg was investigated. Subsequently, the bioactivity was assessed during an in vitro degradation in simulated body fluid (SBF). Finally, biological studies with stem cells were carried out. The results showed an increase of the interfacial adhesion by the formation of a new interphase between the hydrophobic PLA matrix and the hydrophilic Mg filler. This interface stabilization was confirmed by a decrease in the damping factor (tanδ) following the copolymer addition. The latter also proves the beneficial effect of the composite hydrophilicity by selective surface localization of the hydrophilic PEO leading to a significant increase in the protein adsorption. Furthermore, hydroxyapatite was formed in bulk after 8 weeks of immersion in the SBF, suggesting that the bioactivity will be noticeably improved by the addition of the diblock copolymer. This ceramic could react as a natural bonding junction between the designed implant and the fractured bone during osteoregeneration. On the other hand, a slight decrease of the composite mechanical performances was noted.
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14
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Mohamed MA, Shahini A, Rajabian N, Caserto J, El-Sokkary AM, Akl MA, Andreadis ST, Cheng C. Fast photocurable thiol-ene elastomers with tunable biodegradability, mechanical and surface properties enhance myoblast differentiation and contractile function. Bioact Mater 2021; 6:2120-2133. [PMID: 33511311 PMCID: PMC7810627 DOI: 10.1016/j.bioactmat.2020.12.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 01/04/2023] Open
Abstract
Biodegradable elastomers are important emerging biomaterials for biomedical applications, particularly in the area of soft-tissue engineering in which scaffolds need to match the physicochemical properties of native tissues. Here, we report novel fast photocurable elastomers with readily tunable mechanical properties, surface wettability, and degradability. These elastomers are prepared by a 5-min UV-irradiation of thiol-ene reaction systems of glycerol tripentenoate (GTP; a triene) or the combination of GTP and 4-pentenyl 4-pentenoate (PP; a diene) with a carefully chosen series of di- or tri-thiols. In the subsequent application study, these elastomers were found to be capable of overcoming delamination of myotubes, a technical bottleneck limiting the in vitro growth of mature functional myofibers. The glycerol-based elastomers supported the proliferation of mouse and human myoblasts, as well as myogenic differentiation into contractile myotubes. More notably, while beating mouse myotubes detached from conventional tissue culture plates, they remain adherent on the elastomer surface. The results suggest that these elastomers as novel biomaterials may provide a promising platform for engineering functional soft tissues with potential applications in regenerative medicine or pharmacological testing.
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Affiliation(s)
- Mohamed Alaa Mohamed
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
- Chemistry Department, College of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Aref Shahini
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Nika Rajabian
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Julia Caserto
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Ahmed M.A. El-Sokkary
- Chemistry Department, College of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Magda A. Akl
- Chemistry Department, College of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Stelios T. Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
- Center of Excellence in Bioinformatics and Life Sciences, Buffalo, NY, 14263, USA
| | - Chong Cheng
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
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15
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Chang H, Gilcher EB, Huber GW, Dumesic JA. Synthesis of performance-advantaged polyurethanes and polyesters from biomass-derived monomers by aldol-condensation of 5-hydroxymethyl furfural and hydrogenation. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2021; 23:4355-4364. [PMID: 36275196 PMCID: PMC9585942 DOI: 10.1039/d1gc00899d] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Functional polyurethanes and polyesters with tunable properties were synthesized from biomass-derived 5-hydroxymethyl furfural (HMF)-Acetone-HMF (HAH) monomers. HAH can be selectively hydrogenated over Cu and Ru catalysts to produce partially-hydrogenated (PHAH) and fully-hydrogenated (FHAH). The HAH units in these polymers improve the thermal stability and stiffness of the polymers compared to polyurethanes produced with ethylene glycol. Polyurethanes produced from PHAH provide diene binding sites for electron deficient C=C double bonds, such as in maleimide compounds, that can participate in Diels-Alder reactions. Such sites can function to create crosslinking by Diels-Alder coupling with bismaleimides and can be used to impart functionality to PHAH (giving rise to anti-microbial activity or controlled drug delivery). The symmetric triol structure of FHAH leads to energy-dissipating rubbers with branched structures. Accordingly, the properties of these biomass-derived polymers can be tuned by controlling the blending ratio of HAH-derived monomers or the degree of Diels-Alder reaction. The polyester produced from HAH can be used in packaging applications.
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Affiliation(s)
- Hochan Chang
- Department of Chemical and Biological Engineering, University of Wisconsin–Madison, Madison, WI, USA
| | - Elise B. Gilcher
- Department of Chemical and Biological Engineering, University of Wisconsin–Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin–Madison, Madison, WI, USA
| | - George W. Huber
- Department of Chemical and Biological Engineering, University of Wisconsin–Madison, Madison, WI, USA
| | - James A. Dumesic
- Department of Chemical and Biological Engineering, University of Wisconsin–Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin–Madison, Madison, WI, USA
- Corresponding author.
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16
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Hartmann F, Baumgartner M, Kaltenbrunner M. Becoming Sustainable, The New Frontier in Soft Robotics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004413. [PMID: 33336520 DOI: 10.1002/adma.202004413] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/03/2020] [Indexed: 06/12/2023]
Abstract
The advancement of technology has a profound and far-reaching impact on the society, now penetrating all areas of life. From cradle to grave, one is supported by and depends on a wide range of electronic and robotic appliances, with an ever more intimate integration of the digital and biological spheres. These advances, however, often come at the price of negatively impacting our ecosystem, with growing demands on energy, contributions to greenhouse gas emissions and environmental pollution-from production to improper disposal. Mitigating these adverse effects is among the grand challenges of the society and at the forefront of materials research. The currently emerging forms of soft, biologically inspired electronics and robotics have the unique potential of becoming not only like their natural antitypes in performance and capabilities, but also in terms of their ecological footprint. This review outlines the rise of sustainable materials in soft and bioinspired robotics, targeting all robotic components from actuators to energy storage and electronics. The state-of-the-art in biobased robotics spans flourishing fields and applications ranging from microbots operating in vivo to biohybrid machines and fully biodegradable yet resilient actuators. These first steps initiate the evolution of robotics and guide them into a sustainable future.
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Affiliation(s)
- Florian Hartmann
- Soft Matter Physics, Institute of Experimental Physics, Johannes Kepler University Linz, Altenberger Strasse 69, Linz, 4040, Austria
- Soft Materials Lab, Linz Institute of Technology LIT, Johannes Kepler University, Altenberger Strasse 69, Linz, 4040, Austria
| | - Melanie Baumgartner
- Soft Matter Physics, Institute of Experimental Physics, Johannes Kepler University Linz, Altenberger Strasse 69, Linz, 4040, Austria
- Soft Materials Lab, Linz Institute of Technology LIT, Johannes Kepler University, Altenberger Strasse 69, Linz, 4040, Austria
- Institute of Polymer Science, Johannes Kepler University, Altenberger Strasse 69, Linz, 4040, Austria
| | - Martin Kaltenbrunner
- Soft Matter Physics, Institute of Experimental Physics, Johannes Kepler University Linz, Altenberger Strasse 69, Linz, 4040, Austria
- Soft Materials Lab, Linz Institute of Technology LIT, Johannes Kepler University, Altenberger Strasse 69, Linz, 4040, Austria
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17
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Achievements and Trends in Biocatalytic Synthesis of Specialty Polymers from Biomass-Derived Monomers Using Lipases. Processes (Basel) 2021. [DOI: 10.3390/pr9040646] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
New technologies for the conversion of biomass into high-value chemicals, including polymers and plastics, is a must and a challenge. The development of green processes in the last decade involved a continuous increase of the interest towards the synthesis of polymers using in vitro biocatalysis. Among the remarkable diversity of new bio-based polymeric products meeting the criteria of sustainability, biocompatibility, and eco-friendliness, a wide range of polyesters with shorter chain length were obtained and characterized, targeting biomedical and cosmetic applications. In this review, selected examples of such specialty polymers are presented, highlighting the recent developments concerning the use of lipases, mostly in immobilized form, for the green synthesis of ε-caprolactone co-polymers, polyesters with itaconate or furan units, estolides, and polyesteramides. The significant process parameters influencing the average molecular weights and other characteristics are discussed, revealing the advantages and limitations of biocatalytic processes for the synthesis of these bio-based polymers.
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18
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Development and characterisation of cytocompatible polyester substrates with tunable mechanical properties and degradation rate. Acta Biomater 2021; 121:303-315. [PMID: 33227488 DOI: 10.1016/j.actbio.2020.11.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 11/12/2020] [Accepted: 11/17/2020] [Indexed: 12/18/2022]
Abstract
Although it has been repeatedly indicated the importance to develop implantable devices and cell culture substrates with tissue-specific rigidity, current commercially available products, in particular cell culture substrates, have rigidity values well above most tissues in the body. Herein, six resorbable polyester films were fabricated using compression moulding with a thermal presser into films with tailored stiffness by appropriately selecting the ratio of their building up monomers (e.g. lactide, glycolide, trimethylene carbonate, dioxanone, ε-caprolactone). Typical NMR and FTIR spectra were obtained, suggesting that the fabrication process did not have a negative effect on the conformation of the polymers. Surface roughness analysis revealed no apparent differences between the films as a function of polymer composition. Subject to polymer composition, polymeric films were obtained with glass transition temperatures from -52 °C to 61 °C; contact angles in water from 81 ° to 94 °; storage modulus from 108 MPa to 2,756 MPa and loss modulus from 8 MPa to 507 MPa (both in wet state, at 1 Hz frequency and at 37 °C); ultimate tensile strength from 8 MPa to 62 MPa, toughness from 23 MJ/m3 to 287 MJ/m3, strain at break from 3 % to 278 %, macro-scale Young's modulus from 110 MPa to 2,184 MPa (all in wet state); and nano-scale Young's modulus from 6 kPa to 15,019 kPa (in wet state). With respect to in vitro degradation in phosphate buffered saline at 37 °C, some polymeric films [e.g. poly(glycolide-lactide) 30 / 70] started degrading from day 7 (shortest timepoint assessed), whilst others [e.g. poly(glycolide-co-ε-caprolactone) 10 / 90] were more resilient to degradation up to day 21 (longest timepoint assessed). In vitro biological analysis using human dermal fibroblasts and a human monocyte cell line (THP-1) showed the potential of the polymeric films to support cell growth and controlled immune response. Evidently, the selected polymers exhibited properties suitable for a range of clinical indications.
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19
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Morphology, thermal properties, mechanical property and degradation of PLGA/PTMC composites. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-2018-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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20
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Baumgartner M, Hartmann F, Drack M, Preninger D, Wirthl D, Gerstmayr R, Lehner L, Mao G, Pruckner R, Demchyshyn S, Reiter L, Strobel M, Stockinger T, Schiller D, Kimeswenger S, Greibich F, Buchberger G, Bradt E, Hild S, Bauer S, Kaltenbrunner M. Resilient yet entirely degradable gelatin-based biogels for soft robots and electronics. NATURE MATERIALS 2020; 19:1102-1109. [PMID: 32541932 DOI: 10.1038/s41563-020-0699-3] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 05/06/2020] [Indexed: 05/19/2023]
Abstract
Biodegradable and biocompatible elastic materials for soft robotics, tissue engineering or stretchable electronics with good mechanical properties, tunability, modifiability or healing properties drive technological advance, and yet they are not durable under ambient conditions and do not combine all the attributes in a single platform. We have developed a versatile gelatin-based biogel, which is highly resilient with outstanding elastic characteristics, yet degrades fully when disposed. It self-adheres, is rapidly healable and derived entirely from natural and food-safe constituents. We merge all the favourable attributes in one material that is easy to reproduce and scalable, and has a low-cost production under ambient conditions. This biogel is a step towards durable, life-like soft robotic and electronic systems that are sustainable and closely mimic their natural antetypes.
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Affiliation(s)
- Melanie Baumgartner
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
- Institute of Polymer Science, Johannes Kepler University Linz, Linz, Austria
| | - Florian Hartmann
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Michael Drack
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - David Preninger
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Daniela Wirthl
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Robert Gerstmayr
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
- Institute of Polymer Science, Johannes Kepler University Linz, Linz, Austria
| | - Lukas Lehner
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Guoyong Mao
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Roland Pruckner
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Stepan Demchyshyn
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Lisa Reiter
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Moritz Strobel
- Institute of Polymer Science, Johannes Kepler University Linz, Linz, Austria
| | - Thomas Stockinger
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - David Schiller
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Susanne Kimeswenger
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
- Department of Dermatology and Venerology, Kepler University Hospital, Linz, Austria
| | - Florian Greibich
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria
| | - Gerda Buchberger
- Institute of Biomedical Mechatronics, Johannes Kepler University Linz, Linz, Austria
- Institute of Applied Physics, Johannes Kepler University Linz, Linz, Austria
| | - Elke Bradt
- Institute of Polymer Science, Johannes Kepler University Linz, Linz, Austria
| | - Sabine Hild
- Institute of Polymer Science, Johannes Kepler University Linz, Linz, Austria
| | - Siegfried Bauer
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria
| | - Martin Kaltenbrunner
- Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Linz, Austria.
- Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Linz, Austria.
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Arsenie L, Pinese C, Bethry A, Valot L, Verdie P, Nottelet B, Subra G, Darcos V, Garric X. Star-poly(lactide)-peptide hybrid networks as bioactive materials. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109990] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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22
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Design and characterization of poly(glycerol-sebacate)-co-poly(caprolactone) (PGS-co-PCL) and its nanocomposites as novel biomaterials: The promising candidate for soft tissue engineering. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109985] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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23
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Jo SB, Erdenebileg U, Dashnyam K, Jin GZ, Cha JR, El-Fiqi A, Knowles JC, Patel KD, Lee HH, Lee JH, Kim HW. Nano-graphene oxide/polyurethane nanofibers: mechanically flexible and myogenic stimulating matrix for skeletal tissue engineering. J Tissue Eng 2020; 11:2041731419900424. [PMID: 32076499 PMCID: PMC7001895 DOI: 10.1177/2041731419900424] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/18/2019] [Indexed: 12/16/2022] Open
Abstract
For skeletal muscle engineering, scaffolds that can stimulate myogenic differentiation of cells while possessing suitable mechanical properties (e.g. flexibility) are required. In particular, the elastic property of scaffolds is of importance which helps to resist and support the dynamic conditions of muscle tissue environment. Here, we developed highly flexible nanocomposite nanofibrous scaffolds made of polycarbonate diol and isosorbide-based polyurethane and hydrophilic nano-graphene oxide added at concentrations up to 8%. The nano-graphene oxide incorporation increased the hydrophilicity, elasticity, and stress relaxation capacity of the polyurethane-derived nanofibrous scaffolds. When cultured with C2C12 cells, the polyurethane-nano-graphene oxide nanofibers enhanced the initial adhesion and spreading of cells and further the proliferation. Furthermore, the polyurethane-nano-graphene oxide scaffolds significantly up-regulated the myogenic mRNA levels and myosin heavy chain expression. Of note, the cells on the flexible polyurethane-nano-graphene oxide nanofibrous scaffolds could be mechanically stretched to experience dynamic tensional force. Under the dynamic force condition, the cells expressed significantly higher myogenic differentiation markers at both gene and protein levels and exhibited more aligned myotubular formation. The currently developed polyurethane-nano-graphene oxide nanofibrous scaffolds, due to their nanofibrous morphology and high mechanical flexibility, along with the stimulating capacity for myogenic differentiation, are considered to be a potential matrix for future skeletal muscle engineering.
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Affiliation(s)
- Seung Bin Jo
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - Uyanga Erdenebileg
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
| | - Khandmaa Dashnyam
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Guang-Zhen Jin
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Jae-Ryung Cha
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
| | - Ahmed El-Fiqi
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - Jonathan C. Knowles
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Division of Biomaterials and Tissue
Engineering, Eastman Dental Institute, University College London, London, UK
- The Discoveries Centre for Regenerative
and Precision Medicine, Eastman Dental Institute, University College London, London,
UK
| | - Kapil Dev Patel
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Hae-Hyoung Lee
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Department of Biomaterials Science,
College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Jung-Hwan Lee
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Department of Biomaterials Science,
College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Hae-Won Kim
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Department of Biomaterials Science,
College of Dentistry, Dankook University, Cheonan, Republic of Korea
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24
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Zou F, Sun X, Wang X. Elastic, hydrophilic and biodegradable poly (1, 8-octanediol-co-citric acid)/polylactic acid nanofibrous membranes for potential wound dressing applications. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.05.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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25
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Li W, Fu Y, Jiang B, Lo AY, Ameer GA, Barnett C, Wang B. Polymer-integrated amnion scaffold significantly improves cleft palate repair. Acta Biomater 2019; 92:104-114. [PMID: 31102764 DOI: 10.1016/j.actbio.2019.05.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 04/08/2019] [Accepted: 05/13/2019] [Indexed: 11/17/2022]
Abstract
Cleft palate is a common oral and craniomaxillofacial birth defect. As the ideal surgery time is shortly after birth, clinical treatments should result in minimal disruption of theskeleton to allow tissue growth in children. A tissue-engineered graft was created in this study for cleft palate repair by integrating poly(1,8-octamethylene-citrate) (POC) with a decellularized amnion membrane (DAM-POC) to incorporate the advantages of both the synthetic polymer and the native tissue. The success of POC incorporation was confirmed by laser-induced breakdown spectroscopy and fluorescence detection. The DAM-POC scaffold showed a certain level of structure collapse and lower stiffness but better resistance to enzyme digestion than the native amnion and DAM scaffold. The DAM-POC scaffold is cell compatible when seeded with mesenchymal stem cells, as evidenced by adequate cell viability and improved alkaline phosphatase (ALP) activity and calcium deposit. A large palate defect was first surgically created in a young rat model and then repaired with the DAM-POC scaffold. Eight weeks postsurgery, histological study and CT scans showed nearly complete healing of both soft and hard tissues. In conclusion, we developed a cell-free, resorbable graft by incorporating and integrating a synthetic polymer with a human DAM. When the DAM-POC scaffold was applied to repair a large palate defect in young rats, it showed adequate biocompatibility as evidenced by its effectiveness in guiding hard and soft tissue regeneration and minimum interference with natural growth and palate development of rats. STATEMENT OF SIGNIFICANCE: Proper restoration of severe cleft palate remains a major challenge because of insufficient autologous soft tissues to close the open wounds, thereby causing high tension at the surgical junction, secondary palatal fistulas, wound contraction, scar tissue formation, and facial growth disturbances. In this study, we have developed a tissue-engineered graft through incorporating and integrating a synthetic polymer with the human amnion membrane for cleft palate repair. The significance of this study lies in our ability to develop a cell-free, resorbable graft that can provide a less surgically invasive option to cover the open defect and support palate regeneration and tissue growth. This technique could potentially advance soft and hard tissue regeneration in children with birth craniomaxillofacial defects.
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Affiliation(s)
- Wuwei Li
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Liaoning 116001, China
| | - Yuqian Fu
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Liaoning 116001, China
| | - Bin Jiang
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, United States; Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60201, United States
| | - Aaron Y Lo
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, United States; Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60201, United States
| | - Guillermo A Ameer
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, United States; Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60201, United States
| | - Cleon Barnett
- Department of Physical Sciences, Alabama State University, Montgomery, AL 36104, United States
| | - Bo Wang
- Joint Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin, Milwaukee, WI 53226, United States.
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Rohman G, Langueh C, Ramtani S, Lataillade JJ, Lutomski D, Senni K, Changotade S. The Use of Platelet-Rich Plasma to Promote Cell Recruitment into Low-Molecular-Weight Fucoidan-Functionalized Poly(Ester-Urea-Urethane) Scaffolds for Soft-Tissue Engineering. Polymers (Basel) 2019; 11:E1016. [PMID: 31181822 PMCID: PMC6631166 DOI: 10.3390/polym11061016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 05/23/2019] [Accepted: 06/07/2019] [Indexed: 01/12/2023] Open
Abstract
Due to their elastomeric behavior, polyurethane-based scaffolds can find various applications in soft-tissue engineering. However, their relatively inert surface has to be modified in order to improve cell colonization and control cell fate. The present study focuses on porous biodegradable scaffolds based on poly(ester-urea-urethane), functionalized concomitantly to the scaffold elaboration with low-molecular-weight (LMW) fucoidan; and their bio-activation with platelet rich plasma (PRP) formulations with the aim to promote cell response. The LMW fucoidan-functionalization was obtained in a very homogeneous way, and was stable after the scaffold sterilization and incubation in phosphate-buffered saline. Biomolecules from PRP readily penetrated into the functionalized scaffold, leading to a biological frame on the pore walls. Preliminary in vitro assays were assessed to demonstrate the improvement of scaffold behavior towards cell response. The scaffold bio-activation drastically improved cell migration. Moreover, cells interacted with all pore sides into the bio-activated scaffold forming cell bridges across pores. Our work brought out an easy and versatile way of developing functionalized and bio-activated elastomeric poly(ester-urea-urethane) scaffolds with a better cell response.
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Affiliation(s)
- Géraldine Rohman
- Tissue Engineering and Proteomics (TIP) team, CSPBAT UMR CNRS 7244, Université Paris 13, Sorbonne Paris Cité, 74 rue Marcel Cachin, 93000 Bobigny, France.
| | - Credson Langueh
- Tissue Engineering and Proteomics (TIP) team, CSPBAT UMR CNRS 7244, Université Paris 13, Sorbonne Paris Cité, 74 rue Marcel Cachin, 93000 Bobigny, France.
| | - Salah Ramtani
- LBPS team, CSPBAT UMR CNRS 7244, Université Paris 13, Sorbonne Paris Cité, 99 avenue Jean-Baptiste Clément, 93430 Villetaneuse, France.
| | - Jean-Jacques Lataillade
- Institut de Recherche Biomédicale des Armées, Unité de Thérapie Cellulaire et Réparation Tissulaire, Site du Centre de Transfusion Sanguine des Armées "Jean Julliard" de Clamart, BP 73, 91223 Brétigny-sur-Orge Cedex, France.
| | - Didier Lutomski
- Tissue Engineering and Proteomics (TIP) team, CSPBAT UMR CNRS 7244, Université Paris 13, Sorbonne Paris Cité, 74 rue Marcel Cachin, 93000 Bobigny, France.
| | - Karim Senni
- Ecole de biologie Industrielle, 49 avenue des Genottes, 95885 Cergy Cedex, France.
| | - Sylvie Changotade
- Tissue Engineering and Proteomics (TIP) team, CSPBAT UMR CNRS 7244, Université Paris 13, Sorbonne Paris Cité, 74 rue Marcel Cachin, 93000 Bobigny, France.
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27
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Jones T, Zhang B, Major S, Webb A. All-trans retinoic acid eluting poly(diol citrate) wafers for treatment of glioblastoma. J Biomed Mater Res B Appl Biomater 2019; 108:619-628. [PMID: 31087625 DOI: 10.1002/jbm.b.34416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/15/2019] [Accepted: 04/25/2019] [Indexed: 12/23/2022]
Abstract
Current treatments for glioblastoma have failed to significantly increase patient survival, are extremely cytotoxic, can cause severe side effects, and are ineffective. Given these limitations, drugs other than cytotoxic chemotherapeutic agents are being explored. Recent studies show that all-trans retinoic acid (ATRA) could be effective on cancer cells as they have been shown to suppress carcinogenesis in a variety of tumor types and can reverse premalignant lesions and inhibit the development of secondary tumors in the head and neck of cancer patients. However, the therapeutic effects of retinoids such as ATRA are undermined by its rapid in vivo metabolism by cytochrome P450 enzymes, difficulty in crossing the blood-brain barrier, and sensitivity to isomerization/degradation. To overcome these limitations, we have developed a porous poly(1,8-octanediol-co-citrate; POC) wafer that stabilizes all-trans retinoic acid, while slowly releasing ATRA over 3 months. Release of ATRA from POC wafers inhibited proliferation of U87MG (glioblastoma) cells and caused upregulation in genes associated with differentiation into normal phenotype and apoptosis. Therefore, ATRA eluting poly(diol citrate) wafers are a promising treatment option compared to traditional cytotoxic chemotherapeutic agents.
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Affiliation(s)
- Tarielle Jones
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida
| | - Bisheng Zhang
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida
| | - Stephano Major
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida
| | - Antonio Webb
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida
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Synthesis, Nanomechanical Characterization and Biocompatibility of a Chitosan-Graft-Poly(ε-caprolactone) Copolymer for Soft Tissue Regeneration. MATERIALS 2019; 12:ma12010150. [PMID: 30621234 PMCID: PMC6337280 DOI: 10.3390/ma12010150] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/21/2018] [Accepted: 12/27/2018] [Indexed: 11/17/2022]
Abstract
Tissue regeneration necessitates the development of appropriate scaffolds that facilitate cell growth and tissue development by providing a suitable substrate for cell attachment, proliferation, and differentiation. The optimized scaffolds should be biocompatible, biodegradable, and exhibit proper mechanical behavior. In the present study, the nanomechanical behavior of a chitosan-graft-poly(ε-caprolactone) copolymer, in hydrated and dry state, was investigated and compared to those of the individual homopolymers, chitosan (CS) and poly(ε-caprolactone) (PCL). Hardness and elastic modulus values were calculated, and the time-dependent behavior of the samples was studied. Submersion of PCL and the graft copolymer in α-MEM suggested the deterioration of the measured mechanical properties as a result of the samples’ degradation. However, even after three days of degradation, the graft copolymer presented sufficient mechanical strength and elastic properties, which resemble those reported for soft tissues. The in vitro biological evaluation of the material clearly demonstrated that the CS-g-PCL copolymer supports the growth of Wharton’s jelly mesenchymal stem cells and tissue formation with a simultaneous material degradation. Both the mechanical and biological data render the CS-g-PCL copolymer appropriate as a scaffold in a cell-laden construct for soft tissue engineering.
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Ghosal K, Sarkar K. Poly(ester amide) derived from municipal polyethylene terephthalate waste guided stem cells for osteogenesis. NEW J CHEM 2019. [DOI: 10.1039/c9nj02940k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel poly(ester amide) was synthesized by using recycled poly(ethylene terephthalate) waste and soybean oil and other renewable resources for bone tissue engineering applications.
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Affiliation(s)
- Krishanu Ghosal
- Gene Therapy and Tissue Engineering Lab
- Department of Polymer Science and Technology
- University of Calcutta
- Kolkata-700009
- India
| | - Kishor Sarkar
- Gene Therapy and Tissue Engineering Lab
- Department of Polymer Science and Technology
- University of Calcutta
- Kolkata-700009
- India
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30
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Zhang X, Tan BH, Li Z. Biodegradable polyester shape memory polymers: Recent advances in design, material properties and applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:1061-1074. [DOI: 10.1016/j.msec.2017.11.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/13/2017] [Accepted: 11/17/2017] [Indexed: 01/09/2023]
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31
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Taylor DA, Sampaio LC, Ferdous Z, Gobin AS, Taite LJ. Decellularized matrices in regenerative medicine. Acta Biomater 2018; 74:74-89. [PMID: 29702289 DOI: 10.1016/j.actbio.2018.04.044] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 04/19/2018] [Accepted: 04/23/2018] [Indexed: 01/04/2023]
Abstract
Of all biologic matrices, decellularized extracellular matrix (dECM) has emerged as a promising tool used either alone or when combined with other biologics in the fields of tissue engineering or regenerative medicine - both preclinically and clinically. dECM provides a native cellular environment that combines its unique composition and architecture. It can be widely obtained from native organs of different species after being decellularized and is entitled to provide necessary cues to cells homing. In this review, the superiority of the macro- and micro-architecture of dECM is described as are methods by which these unique characteristics are being harnessed to aid in the repair and regeneration of organs and tissues. Finally, an overview of the state of research regarding the clinical use of different matrices and the common challenges faced in using dECM are provided, with possible solutions to help translate naturally derived dECM matrices into more robust clinical use. STATEMENT OF SIGNIFICANCE Ideal scaffolds mimic nature and provide an environment recognized by cells as proper. Biologically derived matrices can provide biological cues, such as sites for cell adhesion, in addition to the mechanical support provided by synthetic matrices. Decellularized extracellular matrix is the closest scaffold to nature, combining unique micro- and macro-architectural characteristics with an equally unique complex composition. The decellularization process preserves structural integrity, ensuring an intact vasculature. As this multifunctional structure can also induce cell differentiation and maturation, it could become the gold standard for scaffolds.
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32
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Ye H, Zhang K, Kai D, Li Z, Loh XJ. Polyester elastomers for soft tissue engineering. Chem Soc Rev 2018; 47:4545-4580. [PMID: 29722412 DOI: 10.1039/c8cs00161h] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Polyester elastomers are soft, biodegradable and biocompatible and are commonly used in various biomedical applications, especially in tissue engineering. These synthetic polyesters can be easily fabricated using various techniques such as solvent casting, particle leaching, molding, electrospinning, 3-dimensional printing, photolithography, microablation etc. A large proportion of tissue engineering research efforts have focused on the use of allografts, decellularized animal scaffolds or other biological materials as scaffolds, but they face the major concern of triggering immunological responses from the host, on top of other issues. This review paper will introduce the recent developments in elastomeric polyesters, their synthesis and fabrication techniques, as well as their application in the biomedical field, focusing primarily on tissue engineering in ophthalmology, cardiac and vascular systems. Some of the commercial and near-commercial polyesters used in these tissue engineering fields will also be described.
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Affiliation(s)
- Hongye Ye
- Institute of Materials Research and Engineering (IMRE), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore.
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33
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Lee SH, Lee KW, Gade PS, Robertson AM, Wang Y. Microwave-assisted facile fabrication of porous poly (glycerol sebacate) scaffolds. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2018; 29:907-916. [PMID: 28569644 PMCID: PMC5738282 DOI: 10.1080/09205063.2017.1335076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/23/2017] [Indexed: 12/31/2022]
Abstract
The biodegradable elastomeric polyester poly(glycerol sebacate) (PGS) was developed for soft-tissue engineering. It has been used in various research applications such as wound healing, cartilage tissue engineering, and vascular grafting due to its biocompatibility and elastomeric properties. However conventional PGS manufacture is generally limited by the laborious reaction conditions needed for curing which requires elevated reaction temperatures, high vacuum and multi-day reaction times. In this study, we developed a microwave irradiation methodology to fabricate PGS scaffolds under milder conditions with curing times that are 8 times faster than conventional methods. In particular, we determined microwave reaction temperatures and times for maximum crosslinking of PGS elastomers, demonstrating that PGS is fully crosslinked using gradual heating up to 160 °C for 3 h. Porosity and mechanical properties of these microwave-cured PGS elastomers were shown to be similar to PGS elastomers fabricated by the conventional polycondensation method (150 °C under 30 Torr for 24 h). To move one step closer to clinical application, we also examined the biocompatibility of microwave-cured PGS using in vitro cell viability assays with primary baboon arterial smooth muscle cells (SMCs). These combined results show microwave curing of PGS is a viable alternative to conventional curing.
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Affiliation(s)
- Soo Hyon Lee
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Kee-Won Lee
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Piyusha S. Gade
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Anne M. Robertson
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261
- McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Yadong Wang
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15260, USA, USA
- Clinical Translational Science Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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34
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Johnson SC, Smith ZL, Sack BS, Steinberg GD. Tissue Engineering and Conduit Substitution. Urol Clin North Am 2018; 45:133-141. [DOI: 10.1016/j.ucl.2017.09.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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35
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Johns M, Bae Y, Guimarães FEG, Lanzoni EM, Costa CAR, Murray PM, Deneke C, Galembeck F, Scott JL, Sharma RI. Predicting Ligand-Free Cell Attachment on Next-Generation Cellulose-Chitosan Hydrogels. ACS OMEGA 2018; 3:937-945. [PMID: 30023793 PMCID: PMC6045362 DOI: 10.1021/acsomega.7b01583] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/02/2018] [Indexed: 06/08/2023]
Abstract
There is a growing appreciation that engineered biointerfaces can regulate cell behaviors, or functions. Most systems aim to mimic the cell-friendly extracellular matrix environment and incorporate protein ligands; however, the understanding of how a ligand-free system can achieve this is limited. Cell scaffold materials comprised of interfused chitosan-cellulose hydrogels promote cell attachment in ligand-free systems, and we demonstrate the role of cellulose molecular weight, MW, and chitosan content and MW in controlling material properties and thus regulating cell attachment. Semi-interpenetrating network (SIPN) gels, generated from cellulose/ionic liquid/cosolvent solutions, using chitosan solutions as phase inversion solvents, were stable and obviated the need for chemical coupling. Interface properties, including surface zeta-potential, dielectric constant, surface roughness, and shear modulus, were modified by varying the chitosan degree of polymerization and solution concentration, as well as the source of cellulose, creating a family of cellulose-chitosan SIPN materials. These features, in turn, affect cell attachment onto the hydrogels and the utility of this ligand-free approach is extended by forecasting cell attachment using regression modeling to isolate the effects of individual parameters in an initially complex system. We demonstrate that increasing the charge density, and/or shear modulus, of the hydrogel results in increased cell attachment.
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Affiliation(s)
- Marcus
A. Johns
- Department
of Chemical Engineering, Centre for Sustainable Chemical
Technologies, and Department of Chemistry, University of
Bath, Bath BA2 7AY, U.K.
| | - Yongho Bae
- Department
of Pathology and Anatomical Sciences, Jacobs School of Medicine and
Biomedical Sciences, University at Buffalo,
The State University of New York, Buffalo, New York 14203, United States
| | | | - Evandro M. Lanzoni
- Brazilian
Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP 13083-970, Brazil
- Institute
of Science and Technology, São Paulo
State University (UNESP), Sorocaba, SP 18087-180, Brazil
| | - Carlos A. R. Costa
- Brazilian
Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP 13083-970, Brazil
| | - Paul M. Murray
- Paul
Murray Catalysis Consulting Ltd., 67 Hudson Close, Yate BS37 4NP, U.K.
| | - Christoph Deneke
- Brazilian
Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP 13083-970, Brazil
- Departamento
de Física Aplicada, Instituto de Física “Gleb
Wataghin”, Universidade Estadual
de Campinas − UNICAMP, Campinas, SP 13083-859, Brazil
| | - Fernando Galembeck
- Brazilian
Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP 13083-970, Brazil
| | - Janet L. Scott
- Department
of Chemical Engineering, Centre for Sustainable Chemical
Technologies, and Department of Chemistry, University of
Bath, Bath BA2 7AY, U.K.
| | - Ram I. Sharma
- Department
of Chemical Engineering, Centre for Sustainable Chemical
Technologies, and Department of Chemistry, University of
Bath, Bath BA2 7AY, U.K.
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36
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Fan B, Yardley RE, Trant JF, Borecki A, Gillies ER. Tuning the hydrophobic cores of self-immolative polyglyoxylate assemblies. Polym Chem 2018. [DOI: 10.1039/c8py00350e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amphiphilic block copolymers containing different self-immolative polyglyoxylates were synthesized and self-assembled to provide drug carriers with variable celecoxib loading capacities and release rates, as well as different in vitro toxicities.
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Affiliation(s)
- Bo Fan
- Department of Chemical and Biochemical Engineering and the Centre for Advanced Materials and Biomaterials Research
- The University of Western Ontario
- London
- Canada
| | | | - John F. Trant
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
| | - Aneta Borecki
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
| | - Elizabeth R. Gillies
- Department of Chemical and Biochemical Engineering and the Centre for Advanced Materials and Biomaterials Research
- The University of Western Ontario
- London
- Canada
- Department of Chemistry
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37
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Bagdadi AV, Safari M, Dubey P, Basnett P, Sofokleous P, Humphrey E, Locke I, Edirisinghe M, Terracciano C, Boccaccini AR, Knowles JC, Harding SE, Roy I. Poly(3-hydroxyoctanoate), a promising new material for cardiac tissue engineering. J Tissue Eng Regen Med 2018; 12:e495-e512. [PMID: 27689781 DOI: 10.1002/term.2318] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 06/30/2016] [Accepted: 09/26/2016] [Indexed: 11/12/2022]
Abstract
Cardiac tissue engineering (CTE) is currently a prime focus of research because of an enormous clinical need. In the present work, a novel functional material, poly(3-hydroxyoctanoate), P(3HO), a medium chain-length polyhydroxyalkanoate (PHA), produced using bacterial fermentation, was studied as a new potential material for CTE. Engineered constructs with improved mechanical properties, crucial for supporting the organ during new tissue regeneration, and enhanced surface topography, to allow efficient cell adhesion and proliferation, were fabricated. Results showed that the mechanical properties of the final patches were close to that of cardiac muscle. Biocompatibility of neat P(3HO) patches, assessed using neonatal ventricular rat myocytes (NVRM), showed that the polymer was as good as collagen in terms of cell viability, proliferation and adhesion. Enhanced cell adhesion and proliferation properties were observed when porous and fibrous structures were incorporated into the patches. In addition, no deleterious effect was observed on adult cardiomyocyte contraction when cardiomyocytes were seeded on the P(3HO) patches. Hence, P(3HO)-based multifunctional cardiac patches are promising constructs for efficient CTE. This work will have a positive impact on the development of P(3HO) and other PHAs as a novel new family of biodegradable functional materials with huge potential in a range of different biomedical applications, particularly CTE, leading to further interest and exploitation of these materials. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Andrea V Bagdadi
- Applied Biotechnology Research Group Faculty of Science and Technology, University of Westminster, London, UK
| | - Maryam Safari
- Applied Biotechnology Research Group Faculty of Science and Technology, University of Westminster, London, UK
| | - Prachi Dubey
- Applied Biotechnology Research Group Faculty of Science and Technology, University of Westminster, London, UK
| | - Pooja Basnett
- Applied Biotechnology Research Group Faculty of Science and Technology, University of Westminster, London, UK
| | | | | | - Ian Locke
- Applied Biotechnology Research Group Faculty of Science and Technology, University of Westminster, London, UK
| | | | | | - Aldo R Boccaccini
- Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jonathan C Knowles
- Department of Biomaterials and Tissue engineering, Eastman Dental Institute UCL, London, UK.,Department of Nanobiomedical Science and BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Republic of Korea
| | - Sian E Harding
- National Heart and Lung Institute, Imperial College London, UK
| | - Ipsita Roy
- Applied Biotechnology Research Group Faculty of Science and Technology, University of Westminster, London, UK
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38
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39
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[Preparation of nanoparticles for sustained insulin release using poly (ethylene glycol) -poly (ε-caprolactone)-poly (N, N-diethylamino-2-ethylmethaerylate)]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017. [PMID: 28736379 PMCID: PMC6765507 DOI: 10.3969/j.issn.1673-4254.2017.07.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE To prepare an insulin-loaded nanoparticle assembled using pH-sensitive poly(ethylene glycol)-poly(ε-caprolactone)-poly(N,N-diethylamino-2-ethylmethaerylate) (mPEG-PCL-PDEAEMA) and investigate its performance of sustained insulin release in vitro and its hypoglycemic effects in diabetic rats. METHDOS: mPEG-PCL-PDEAEMA triblock copolymers with different hydrophobic lengths were synthesized by ring opening polymerization (ROP) combined with atom transfer radical polymerization (ATRP). The copolymers were characterized using Fourier-transform Infrared (FT-IR) spectroscopy and proton nuclear magnetic resonance spectroscopy (1H-NMR). Insulin-loaded nanoparticles were prepared by nanoprecipitation technique, in which the reversible swelling of the pH-sensitive material was used for insulin loading and release. The obtained nanoparticles were further confirmed by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The entrapment efficiency (EE%), drug loading (DL%) and in vitro release characteristics of the insulin- loaded nanoparticles were assessed using BCA protein assay kit. The hypoglycemic effects of the nanoparticles were evaluated by monitoring the glucose levels. RESULTS The size of the nanoparticles decreased as pH value increased within the range of 1.2 to 7.4. Using copolymers mPEG5k-PCL13k- PDEAEMA10k and mPEG5k-PCL10k-PDEAEMA10k as the drug carriers, the nanoparticles prepared with an optimal insulin-coplymer mass ratio of 90% had an average size of 181.9∓6.67 nm and 169∓7.1 nm, maximal EE% of (81.99∓1.77)% and (53.12∓0.62)%, and maximal DL% of (42.46∓0.53)% and (32.34∓0.26)%, respectively. Compared with free insulin, the insulin-loaded nanoparticles was capable of sustained insulin release and the release rate was lowered as the hydrophobic length increases. In diabetic rats, the insulin-loaded nanoparticles based on mPEG5k-PCL13k- PDEAEMA10k maintained a sustained hypoglycemic effect for 48 h, which was significantly longer than the time of free insulin. CONCLUSION The pH-sensitive triblock copolymer mPEG-PCL-PDEAEMA can serve as a promising candidate of carrier for sustained release of insulin.
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40
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Mi HY, Jing X, Napiwocki BN, Hagerty BS, Chen G, Turng LS. Biocompatible, degradable thermoplastic polyurethane based on polycaprolactone-block-polytetrahydrofuran-block-polycaprolactone copolymers for soft tissue engineering. J Mater Chem B 2017; 5:4137-4151. [PMID: 29170715 PMCID: PMC5695921 DOI: 10.1039/c7tb00419b] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Biodegradable synthetic polymers have been widely used as tissue engineering scaffold materials. Even though they have shown excellent biocompatibility, they have failed to resemble the low stiffness and high elasticity of soft tissues because of the presence of massive rigid ester bonds. Herein, we synthesized a new thermoplastic polyurethane elastomer (CTC-PU(BET)) using poly ester ether triblock copolymer (polycaprolactone-block-polytetrahydrofuran-block-polycaprolactone triblock copolymer, PCTC) as the soft segment, aliphatic diisocyanate (hexamethylene diisocyanate, HDI) as the hard segment, and degradable diol (bis(2-hydroxyethyl) terephthalate, BET) as the chain extender. PCTC inhibited crystallization and reduced the melting temperature of CTC-PU(BET), and BET dramatically enhanced the thermal decomposition and hydrolytic degradation rate when compared with conventional polyester-based biodegradable TPUs. The CTC-PU(BET) synthesized in this study possessed a low tensile modulus and tensile strength of 2.2 MPa and 1.3 MPa, respectively, and an elongation-at-break over 700%. Meanwhile, it maintained a 95.3% recovery rate and 90% resilience over ten cycles of loading and unloading. In addition, the TPU could be electrospun into both random and aligned fibrous scaffolds consisting of major microfibers and nanobranches. 3T3 fibroblast cell culture confirmed that these scaffolds outperformed the conventional biodegradable TPU scaffolds in terms of substrate-cellular interactions and cell proliferation. Considering the advantages of this TPU, such as ease of synthesis, low cost, low stiffness, high elasticity, controllable degradation rate, ease of processability, and excellent biocompatibility, it has great prospects to be used as a tissue engineering scaffold material for soft tissue regeneration.
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Affiliation(s)
- Hao-Yang Mi
- Department of Mechanical Engineering, University of
Wisconsin–Madison, Madison, WI, 53706, USA
- Department of Industrial Equipment and Control Engineering, South
China University of Technology, Guangzhou, 510640, China
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Xin Jing
- Department of Industrial Equipment and Control Engineering, South
China University of Technology, Guangzhou, 510640, China
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Brett N. Napiwocki
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
- Department of Biomedical Engineering, University of
Wisconsin–Madison, Madison, WI, 53706, USA
| | - Breanna S. Hagerty
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Guojun Chen
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Lih-Sheng Turng
- Department of Mechanical Engineering, University of
Wisconsin–Madison, Madison, WI, 53706, USA
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
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Torgut G, Demirelli K. Block copolymerization of methylmethacrylate via ATRP method using a macroinitiator produced by ring opening polymerization: Characterization, dielectric properties, and a kinetic investigation. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2016. [DOI: 10.1080/10601325.2016.1224623] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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42
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Kim JJ, Hou L, Huang NF. Vascularization of three-dimensional engineered tissues for regenerative medicine applications. Acta Biomater 2016; 41:17-26. [PMID: 27262741 PMCID: PMC4969172 DOI: 10.1016/j.actbio.2016.06.001] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 05/24/2016] [Accepted: 06/01/2016] [Indexed: 01/05/2023]
Abstract
UNLABELLED Engineering of three-dimensional (3D) tissues is a promising approach for restoring diseased or dysfunctional myocardium with a functional replacement. However, a major bottleneck in this field is the lack of efficient vascularization strategies, because tissue constructs produced in vitro require a constant flow of oxygen and nutrients to maintain viability and functionality. Compared to angiogenic cell therapy and growth factor treatment, bioengineering approaches such as spatial micropatterning, integration of sacrificial materials, tissue decellularization, and 3D bioprinting enable the generation of more precisely controllable neovessel formation. In this review, we summarize the state-of-the-art approaches to develop 3D tissue engineered constructs with vasculature, and demonstrate how some of these techniques have been applied towards regenerative medicine for treatment of heart failure. STATEMENT OF SIGNIFICANCE Tissue engineering is a promising approach to replace or restore dysfunctional tissues/organs, but a major bottleneck in realizing its potential is the challenge of creating scalable 3D tissues. Since most 3D engineered tissues require a constant supply of nutrients, it is necessary to integrate functional vasculature within the tissues in order to facilitate the transport of nutrients. To address these needs, researchers are employing biomaterial engineering and design strategies to foster vessel formation within 3D tissues. This review highlights the state-of-the-art bioengineering tools and technologies to create vascularized 3D tissues for clinical applications in regenerative medicine, highlighting the application of these technologies to engineer vascularized cardiac patches for treatment of heart failure.
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Affiliation(s)
- Joseph J Kim
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA; Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Luqia Hou
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA; Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Ngan F Huang
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA; Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA; Department of Cardiothoracic Surgery, Stanford University, Stanford, CA, USA.
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Pholpabu P, Yerneni SS, Zhu C, Campbell PG, Bettinger CJ. Controlled Release of Small Molecules from Elastomers for Reducing Epidermal Downgrowth in Percutaneous Devices. ACS Biomater Sci Eng 2016; 2:1464-1470. [DOI: 10.1021/acsbiomaterials.6b00192] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pitirat Pholpabu
- Department of Biomedical Engineering, ‡Institute for Complex
Engineered
Systems, and §Department of Materials Science
and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Saigopalakrishna S. Yerneni
- Department of Biomedical Engineering, ‡Institute for Complex
Engineered
Systems, and §Department of Materials Science
and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Congcong Zhu
- Department of Biomedical Engineering, ‡Institute for Complex
Engineered
Systems, and §Department of Materials Science
and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Phil G. Campbell
- Department of Biomedical Engineering, ‡Institute for Complex
Engineered
Systems, and §Department of Materials Science
and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Christopher J. Bettinger
- Department of Biomedical Engineering, ‡Institute for Complex
Engineered
Systems, and §Department of Materials Science
and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
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44
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Wu Y, Sriram G, Fawzy AS, Fuh JYH, Rosa V, Cao T, Wong YS. Fabrication and evaluation of electrohydrodynamic jet 3D printed polycaprolactone/chitosan cell carriers using human embryonic stem cell-derived fibroblasts. J Biomater Appl 2016; 31:181-92. [DOI: 10.1177/0885328216652537] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Biological function of adherent cells depends on the cell–cell and cell–matrix interactions in three-dimensional space. To understand the behavior of cells in 3D environment and their interactions with neighboring cells and matrix requires 3D culture systems. Here, we present a novel 3D cell carrier scaffold that provides an environment for routine 3D cell growth in vitro. We have developed thin, mechanically stable electrohydrodynamic jet (E-jet) 3D printed polycaprolactone and polycaprolactone/Chitosan macroporous scaffolds with precise fiber orientation for basic 3D cell culture application. We have evaluated the application of this technology by growing human embryonic stem cell-derived fibroblasts within these 3D scaffolds. Assessment of cell viability and proliferation of cells seeded on polycaprolactone and polycaprolactone/Chitosan 3D-scaffolds show that the human embryonic stem cell-derived fibroblasts could adhere and proliferate on the scaffolds over time. Further, using confocal microscopy we demonstrate the ability to use fluorescence-labelled cells that could be microscopically monitored in real-time. Hence, these 3D printed polycaprolactone and polycaprolactone/Chitosan scaffolds could be used as a cell carrier for in vitro 3D cell culture-, bioreactor- and tissue engineering-related applications in the future.
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Affiliation(s)
- Yang Wu
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Gopu Sriram
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Amr S Fawzy
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Jerry YH Fuh
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
- National University of Singapore (Suzhou) Research Institute, Suzhou Industrial Park, Suzhou, People's Republic of China
| | - Vinicius Rosa
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Tong Cao
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
- Tissue Engineering Program, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Yoke San Wong
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
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45
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Phase Separation and Elastic Properties of Poly(Trimethylene Terephthalate)-block-poly(Ethylene Oxide) Copolymers. Polymers (Basel) 2016; 8:polym8070237. [PMID: 30974518 PMCID: PMC6432139 DOI: 10.3390/polym8070237] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/09/2016] [Accepted: 06/14/2016] [Indexed: 11/17/2022] Open
Abstract
A series of poly(trimethylene terephthalate)-block-poly(ethylene oxide) (PTT-b-PEOT) copolymers with different compositions of rigid PTT and flexible PEOT segments were synthesized via condensation in the melt. The influence of the block length and the block ratio on the micro-separated phase structure and elastic properties of the synthesized multiblock copolymers was studied. The PEOT segments in these copolymers were kept constant at 1130, 2130 or 3130 g/mol, whereas the PTT content varied from 30 up to 50 wt %. The phase separation was assessed using differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA). The crystal structure of the synthesised block copolymers and their microstructure on the manometer scale was evaluated by using WAXS and SAXS analysis. Depending on the PTT/PEOT ratio, but also on the rigid and flexible segment length in PTT-b-PEO copolymers, four different domains were observed i.e.,: a crystalline PTT phase, a crystalline PEO phase (which exists for the whole series based on three types of PEOT segments), an amorphous PTT phase (only at 50 wt % content of PTT rigid segments) and an amorphous PEO phase. Moreover, the elastic deformability and reversibility of PTT-b-PEOT block copolymers were studied during a cyclic tensile test. Determined values of permanent set resultant from maximum attained stain (100% and 200%) for copolymers were used to evaluate their elastic properties.
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46
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Gerges I, Tamplenizza M, Lopa S, Recordati C, Martello F, Tocchio A, Ricotti L, Arrigoni C, Milani P, Moretti M, Lenardi C. Creep-resistant dextran-based polyurethane foam as a candidate scaffold for bone tissue engineering: Synthesis, chemico-physical characterization, and in vitro and in vivo biocompatibility. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2016.1163565] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- I. Gerges
- Fondazione Filarete per le Bioscienze e l’innovazione, Milan, Italy
- Tensive s.r.l., Milan, Italy
| | - M. Tamplenizza
- Fondazione Filarete per le Bioscienze e l’innovazione, Milan, Italy
- Tensive s.r.l., Milan, Italy
| | - S. Lopa
- Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
| | - C. Recordati
- Fondazione Filarete per le Bioscienze e l’innovazione, Milan, Italy
| | - F. Martello
- Fondazione Filarete per le Bioscienze e l’innovazione, Milan, Italy
- Tensive s.r.l., Milan, Italy
| | - A. Tocchio
- SEMM, European School of Molecular Medicine, Campus IFOM-IEO, Milano, Italy
| | - L. Ricotti
- The BioRobotics Institute, Scuola Superiore Sant’Anna, Pontedera, Italy
| | - C. Arrigoni
- Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
| | - P. Milani
- Fondazione Filarete per le Bioscienze e l’innovazione, Milan, Italy
- CIMAINA, Dipartimento di Fisica, Università degli Studi di Milano, Milan, Italy
| | - M. Moretti
- Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
- Regenerative Medicine Technologies Lab, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland
- Swiss Institute of Regenerative Medicine (SIRM), Taverne, Switzerland
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - C. Lenardi
- Fondazione Filarete per le Bioscienze e l’innovazione, Milan, Italy
- CIMAINA, Dipartimento di Fisica, Università degli Studi di Milano, Milan, Italy
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47
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Breche Q, Chagnon G, Machado G, Girard E, Nottelet B, Garric X, Favier D. Mechanical behaviour׳s evolution of a PLA-b-PEG-b-PLA triblock copolymer during hydrolytic degradation. J Mech Behav Biomed Mater 2016; 60:288-300. [PMID: 26919565 DOI: 10.1016/j.jmbbm.2016.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 10/22/2022]
Abstract
PLA-b-PEG-b-PLA is a biodegradable triblock copolymer that presents both the mechanical properties of PLA and the hydrophilicity of PEG. In this paper, physical and mechanical properties of PLA-b-PEG-b-PLA are studied during in vitro degradation. The degradation process leads to a mass loss, a decrease of number average molecular weight and an increase of dispersity index. Mechanical experiments are made in a specific experimental set-up designed to create an environment close to in vivo conditions. The viscoelastic behaviour of the material is studied during the degradation. Finally, the mechanical behaviour is modelled with a linear viscoelastic model. A degradation variable is defined and included in the model to describe the hydrolytic degradation. This variable is linked to physical parameters of the macromolecular polymer network. The model allows us to describe weak deformations but become less accurate for larger deformations. The abilities and limits of the model are discussed.
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Affiliation(s)
- Q Breche
- Université Grenoble-Alpes, TIMC-IMAG, F-38000 Grenoble, France; CNRS, TIMC-IMAG, F-38000 Grenoble, France
| | - G Chagnon
- Université Grenoble-Alpes, TIMC-IMAG, F-38000 Grenoble, France; CNRS, TIMC-IMAG, F-38000 Grenoble, France.
| | - G Machado
- Université Grenoble-Alpes, TIMC-IMAG, F-38000 Grenoble, France; CNRS, TIMC-IMAG, F-38000 Grenoble, France
| | - E Girard
- Université Grenoble-Alpes, TIMC-IMAG, F-38000 Grenoble, France; CNRS, TIMC-IMAG, F-38000 Grenoble, France
| | - B Nottelet
- Université de Montpellier, Faculté de pharmacie/Institut des biomolécules Max Mousseron (IBMM)/CNRS/UMR5247, 34093 Montpellier, France
| | - X Garric
- Université de Montpellier, Faculté de pharmacie/Institut des biomolécules Max Mousseron (IBMM)/CNRS/UMR5247, 34093 Montpellier, France
| | - D Favier
- Université Grenoble-Alpes, TIMC-IMAG, F-38000 Grenoble, France; CNRS, TIMC-IMAG, F-38000 Grenoble, France
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48
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Tham WH, Wahit MU, Abdul Kadir MR, Wong TW, Hassan O. Polyol-based biodegradable polyesters: a short review. REV CHEM ENG 2016. [DOI: 10.1515/revce-2015-0035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
AbstractCatalyst-free thermal polyesterification has recently emerged as a potential strategy for designing biodegradable thermoset polymers, particularly polyol-based polyesters for biomedical applications. These thermoset polyesters are synthesized through polycondensation of polyol and polyacid without the presence of catalyst or solvents. The mechanical properties, degradation rates, crystallinity, hydrophilicity, and biocompatibility can be controlled by adjusting the monomer feed ratios and curing conditions. These polyesters often degrade via surface erosion that allows the polymers to maintain structural integrity throughout hydrolysis. Additionally, polyol-based polyesters demonstrated good biocompatibility as non-toxic catalysts and/or solvents involved in the reaction, and the monomers used are endogenous to human metabolism which can be resorbed and metabolized in various physiological pathways. This review summarizes the polyol-based biodegradable polyesters that were synthesized by catalyst-free polyesterification.
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49
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Shafiee A, Kabiri M, Langroudi L, Soleimani M, Ai J. Evaluation and comparison of the in vitro characteristics and chondrogenic capacity of four adult stem/progenitor cells for cartilage cell-based repair. J Biomed Mater Res A 2015; 104:600-610. [PMID: 26507473 DOI: 10.1002/jbm.a.35603] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/17/2015] [Accepted: 10/05/2015] [Indexed: 12/24/2022]
Abstract
Cell-based therapy is being considered as a promising approach to regenerate damaged cartilage. Though, autologous chondrocyte implantation is the most effective strategy currently in use, but is hampered by some drawbacks seeking comprehensive research to surmount existing limitations or introducing alternative cell sources. In this study, we aimed to evaluate and compare the in vitro characteristics and chondrogenic capacity of some easily available adult cell sources for use in cartilage repair which includes: bone marrow-derived mesenchymal stem cells (MSC), adipose tissue-derived MSC, articular chondrocyte progenitors, and nasal septum-derived progenitors. Human stem/progenitor cells were isolated and expanded. Cell's immunophenotype, biosafety, and cell cycle status were evaluated. Also, cells were seeded onto aligned electrospun poly (l-lactic acid)/poly (ε-caprolactone) nanofibrous scaffolds and their proliferation rate as well as chondrogenic potential were assessed. Cells were almost phenotypically alike as they showed similar cell surface marker expression pattern. The aligned nanofibrous hybrid scaffolds could support the proliferation and chondrogenic differentiation of all cell types. However, nasal cartilage progenitors showed a higher proliferation potential and a higher chondrogenic capacity. Though, mostly similar in the majority of the studied features, nasal septum progenitors demonstrated a higher chondrogenic potential that in combination with their higher proliferation rate and easier access to the source tissue, introduces it as a promising cell source for cartilage tissue engineering and regenerative medicine. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 600-610, 2016.
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Affiliation(s)
- Abbas Shafiee
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Stem Cell Biology and Tissue Engineering Department, Stem Cell Technology Research Center, Shahid Beheshti University of Medical Science, Tehran, Iran.,Institute of Health and Biomedical Innovation, Queensland University of Technology, Queensland, Australia
| | - Mahboubeh Kabiri
- Stem Cell Biology and Tissue Engineering Department, Stem Cell Technology Research Center, Shahid Beheshti University of Medical Science, Tehran, Iran.,Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Lida Langroudi
- Stem Cell Biology and Tissue Engineering Department, Stem Cell Technology Research Center, Shahid Beheshti University of Medical Science, Tehran, Iran.,Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, M5S 3G5, Canada
| | - Masoud Soleimani
- Hematology Department, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Jafar Ai
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Brain and Spinal Injury Research Center, Imam Hospital, Tehran University of Medical Sciences, Tehran, Iran
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50
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Barrett DG, Luo W, Yousaf MN. Developing chemoselective and biodegradable polyester elastomers for bioscaffold application. J Mater Chem B 2015; 3:1405-1414. [PMID: 32264491 DOI: 10.1039/c4tb01481b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Thermal polyesterification has emerged as a successful method for synthesizing polyesters for biomedical applications. However, to date, no general functionalization strategy has been incorporated into materials designed by the thermal polycondensation of polyacids and polyols. Herein, we report the design of several elastomers based on the thermal polycondensation of 4-ketopimelic acid, citric acid, and one of two diols: 1,6-hexanediol or 1,4-cyclohexanedimethanol. By varying the diol and the curing conditions, several elastomers were designed with a range of physical and mechanical properties. Poly(diol 4-ketopimelate-co-diol citrate) achieved Young's modulus, ultimate tensile stress, and rupture strain values of 0.39-1.13 MPa, 0.27-1.04 MPa, and 108-426%, respectively. Additionally, the incorporation of the ketone from 4-ketopimelic acid gave these materials two advantageous characteristics: a site for covalent functionalization through oxime formation and the ability to covalently bond to the surrounding tissue through imine linkages. Biocompatibility was studied both in vitro and in vivo in order to gain a complete understanding as to how biological systems respond to these novel materials. Based on preliminary results, we believe that poly(diol 4-ketopimelate-co-diol citrate) polyketoesters are excellent candidates for biomaterials.
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Affiliation(s)
- Devin G Barrett
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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