1
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Wang S, Wen X, Fan Z, Ding X, Wang Q, Liu Z, Yu W. Research advancements on nerve guide conduits for nerve injury repair. Rev Neurosci 2024; 35:627-637. [PMID: 38517315 DOI: 10.1515/revneuro-2023-0093] [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: 08/23/2023] [Accepted: 11/19/2023] [Indexed: 03/23/2024]
Abstract
Peripheral nerve injury (PNI) is one of the most serious causes of disability and loss of work capacity of younger individuals. Although PNS has a certain degree of regeneration, there are still challenges like disordered growth, neuroma formation, and incomplete regeneration. Regarding the management of PNI, conventional methods such as surgery, pharmacotherapy, and rehabilitative therapy. Treatment strategies vary depending on the severity of the injury. While for the long nerve defect, autologous nerve grafting is commonly recognized as the preferred surgical approach. Nevertheless, due to lack of donor sources, neurological deficits and the low regeneration efficiency of grafted nerves, nerve guide conduits (NGCs) are recognized as a future promising technology in recent years. This review provides a comprehensive overview of current treatments for PNI, and discusses NGCs from different perspectives, such as material, design, fabrication process, and composite function.
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Affiliation(s)
- Shoushuai Wang
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Xinggui Wen
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Zheyuan Fan
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Xiangdong Ding
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Qianqian Wang
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Zhongling Liu
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Wei Yu
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
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2
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Crabtree JR, Mulenga CM, Tran K, Feinberg K, Santerre JP, Borschel GH. Biohacking Nerve Repair: Novel Biomaterials, Local Drug Delivery, Electrical Stimulation, and Allografts to Aid Surgical Repair. Bioengineering (Basel) 2024; 11:776. [PMID: 39199733 PMCID: PMC11352148 DOI: 10.3390/bioengineering11080776] [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: 06/13/2024] [Revised: 07/15/2024] [Accepted: 07/26/2024] [Indexed: 09/01/2024] Open
Abstract
The regenerative capacity of the peripheral nervous system is limited, and peripheral nerve injuries often result in incomplete healing and poor outcomes even after repair. Transection injuries that induce a nerve gap necessitate microsurgical intervention; however, even the current gold standard of repair, autologous nerve graft, frequently results in poor functional recovery. Several interventions have been developed to augment the surgical repair of peripheral nerves, and the application of functional biomaterials, local delivery of bioactive substances, electrical stimulation, and allografts are among the most promising approaches to enhance innate healing across a nerve gap. Biocompatible polymers with optimized degradation rates, topographic features, and other functions provided by their composition have been incorporated into novel nerve conduits (NCs). Many of these allow for the delivery of drugs, neurotrophic factors, and whole cells locally to nerve repair sites, mitigating adverse effects that limit their systemic use. The electrical stimulation of repaired nerves in the perioperative period has shown benefits to healing and recovery in human trials, and novel biomaterials to enhance these effects show promise in preclinical models. The use of acellular nerve allografts (ANAs) circumvents the morbidity of donor nerve harvest necessitated by the use of autografts, and improvements in tissue-processing techniques may allow for more readily available and cost-effective options. Each of these interventions aid in neural regeneration after repair when applied independently, and their differing forms, benefits, and methods of application present ample opportunity for synergistic effects when applied in combination.
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Affiliation(s)
- Jordan R. Crabtree
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Chilando M. Mulenga
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Khoa Tran
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Konstantin Feinberg
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - J. Paul Santerre
- Institute of Biomedical Engineering, University of Toronto, 164 College St Room 407, Toronto, ON M5S 3G9, Canada
| | - Gregory H. Borschel
- Division of Plastic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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3
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Redolfi Riva E, Özkan M, Contreras E, Pawar S, Zinno C, Escarda-Castro E, Kim J, Wieringa P, Stellacci F, Micera S, Navarro X. Beyond the limiting gap length: peripheral nerve regeneration through implantable nerve guidance conduits. Biomater Sci 2024; 12:1371-1404. [PMID: 38363090 DOI: 10.1039/d3bm01163a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Peripheral nerve damage results in the loss of sensorimotor and autonomic functions, which is a significant burden to patients. Furthermore, nerve injuries greater than the limiting gap length require surgical repair. Although autografts are the preferred clinical choice, their usage is impeded by their limited availability, dimensional mismatch, and the sacrifice of another functional donor nerve. Accordingly, nerve guidance conduits, which are tubular scaffolds engineered to provide a biomimetic environment for nerve regeneration, have emerged as alternatives to autografts. Consequently, a few nerve guidance conduits have received clinical approval for the repair of short-mid nerve gaps but failed to regenerate limiting gap damage, which represents the bottleneck of this technology. Thus, it is still necessary to optimize the morphology and constituent materials of conduits. This review summarizes the recent advances in nerve conduit technology. Several manufacturing techniques and conduit designs are discussed, with emphasis on the structural improvement of simple hollow tubes, additive manufacturing techniques, and decellularized grafts. The main objective of this review is to provide a critical overview of nerve guidance conduit technology to support regeneration in long nerve defects, promote future developments, and speed up its clinical translation as a reliable alternative to autografts.
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Affiliation(s)
- Eugenio Redolfi Riva
- The Biorobotic Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy.
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Melis Özkan
- Institute of Materials, école Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Bertarelli Foundation Chair in Translational Neural Engineering, Center for Neuroprosthetics and Institute of Bioengineering, école Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Estefania Contreras
- Integral Service for Laboratory Animals (SIAL), Faculty of Veterinary, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain.
| | - Sujeet Pawar
- Institute of Materials, école Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Ciro Zinno
- The Biorobotic Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy.
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Enrique Escarda-Castro
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
| | - Jaehyeon Kim
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
| | - Paul Wieringa
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
| | - Francesco Stellacci
- Institute of Materials, école Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Institute of Materials, Department of Bioengineering and Global Health Institute, École Polytechnique Fédérale de Lausanne (EPFL), Station 12, CH-1015 Lausanne, Switzerland
| | - Silvestro Micera
- The Biorobotic Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy.
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Bertarelli Foundation Chair in Translational Neural Engineering, Center for Neuroprosthetics and Institute of Bioengineering, école Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Xavier Navarro
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain.
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- Institute Guttmann Foundation, Hospital of Neurorehabilitation, Badalona, Spain
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4
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Jiao Y, Lei M, Zhu J, Chang R, Qu X. Advances in electrode interface materials and modification technologies for brain-computer interfaces. BIOMATERIALS TRANSLATIONAL 2023; 4:213-233. [PMID: 38282708 PMCID: PMC10817795 DOI: 10.12336/biomatertransl.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/13/2023] [Accepted: 11/24/2023] [Indexed: 01/30/2024]
Abstract
Recent advances in neuroelectrode interface materials and modification technologies are reviewed. Brain-computer interface is the new method of human-computer interaction, which not only can realise the exchange of information between the human brain and external devices, but also provides a brand-new means for the diagnosis and treatment of brain-related diseases. The neural electrode interface part of brain-computer interface is an important area for electrical, optical and chemical signal transmission between brain tissue system and external electronic devices, which determines the performance of brain-computer interface. In order to solve the problems of insufficient flexibility, insufficient signal recognition ability and insufficient biocompatibility of traditional rigid electrodes, researchers have carried out extensive studies on the neuroelectrode interface in terms of materials and modification techniques. This paper introduces the biological reactions that occur in neuroelectrodes after implantation into brain tissue and the decisive role of the electrode interface for electrode function. Following this, the latest research progress on neuroelectrode materials and interface materials is reviewed from the aspects of neuroelectrode materials and modification technologies, firstly taking materials as a clue, and then focusing on the preparation process of neuroelectrode coatings and the design scheme of functionalised structures.
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Affiliation(s)
- Yunke Jiao
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, China
| | - Miao Lei
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, China
| | - Jianwei Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, China
| | - Ronghang Chang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, China
| | - Xue Qu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, China
- Wenzhou Institute of Shanghai University, Wenzhou, Zhejiang Province, China
- Shanghai Frontier Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai, China
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5
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Pereira I, Lopez-Martinez MJ, Samitier J. Advances in current in vitro models on neurodegenerative diseases. Front Bioeng Biotechnol 2023; 11:1260397. [PMID: 38026882 PMCID: PMC10658011 DOI: 10.3389/fbioe.2023.1260397] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Many neurodegenerative diseases are identified but their causes and cure are far from being well-known. The problem resides in the complexity of the neural tissue and its location which hinders its easy evaluation. Although necessary in the drug discovery process, in vivo animal models need to be reduced and show relevant differences with the human tissues that guide scientists to inquire about other possible options which lead to in vitro models being explored. From organoids to organ-on-a-chips, 3D models are considered the cutting-edge technology in cell culture. Cell choice is a big parameter to take into consideration when planning an in vitro model and cells capable of mimicking both healthy and diseased tissue, such as induced pluripotent stem cells (iPSC), are recognized as good candidates. Hence, we present a critical review of the latest models used to study neurodegenerative disease, how these models have evolved introducing microfluidics platforms, 3D cell cultures, and the use of induced pluripotent cells to better mimic the neural tissue environment in pathological conditions.
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Affiliation(s)
- Inês Pereira
- Nanobioengineering Group, Institute for Bioengineering of Catalonia, Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Maria J. Lopez-Martinez
- Nanobioengineering Group, Institute for Bioengineering of Catalonia, Barcelona Institute of Science and Technology, Barcelona, Spain
- Centro Investigación Biomédica en Red: Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Electronics and Biomedical Engineering, University of Barcelona, Barcelona, Spain
| | - Josep Samitier
- Nanobioengineering Group, Institute for Bioengineering of Catalonia, Barcelona Institute of Science and Technology, Barcelona, Spain
- Centro Investigación Biomédica en Red: Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Electronics and Biomedical Engineering, University of Barcelona, Barcelona, Spain
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6
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Ghorbani S, Christine Füchtbauer A, Møllebjerg A, Møller Martensen P, Hvidbjerg Laursen S, Christian Evar Kraft D, Kjems J, Meyer RL, Rahimi K, Foss M, Füchtbauer EM, Sutherland DS. Protein ligand and nanotopography separately drive the phenotype of mouse embryonic stem cells. Biomaterials 2023; 301:122244. [PMID: 37459700 DOI: 10.1016/j.biomaterials.2023.122244] [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: 01/02/2023] [Revised: 07/09/2023] [Accepted: 07/12/2023] [Indexed: 09/06/2023]
Abstract
Biochemical and biomechanical signals regulate stem cell function in the niche environments in vivo. Current in vitro culture of mouse embryonic stem cells (mESC) uses laminin (LN-511) to provide mimetic biochemical signaling (LN-521 for human systems) to maintain stemness. Alternative approaches propose topographical cues to provide biomechanical cues, however combined biochemical and topographic cues may better mimic the in vivo environment, but are largely unexplored for in vitro stem cell expansion. In this study, we directly compare in vitro signals from LN-511 and/or topographic cues to maintain stemness, using systematically-varied submicron pillar patterns or flat surfaces with or without preadsorbed LN-511. The adhesion of cells, colony formation, expression of the pluripotency marker,octamer-binding transcription factor 4 (Oct4), and transcriptome profiling were characterized. We observed that either biochemical or topographic signals could maintain stemness of mESCs in feeder-free conditions, indicated by high-level Oct4 and gene profiling by RNAseq. The combination of LN-511 with nanotopography reduced colony growth, while maintaining stemness markers, shifted the cellular phenotype indicating that the integration of biochemical and topographic signals is antagonistic. Overall, significantly faster (up to 2.5 times) colony growth was observed at nanotopographies without LN-511, suggesting for improved ESC expansion.
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Affiliation(s)
- Sadegh Ghorbani
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark; The Centre for Cellular Signal Patterns (CELLPAT), Gustav Wieds Vej 14, Aarhus C, 8000, Denmark; Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA.
| | | | - Andreas Møllebjerg
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
| | | | - Sara Hvidbjerg Laursen
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
| | - David Christian Evar Kraft
- Department of Dentistry and Oral Health, Faculty of Health, University of Aarhus, Aarhus C, 8000, Denmark
| | - Jørgen Kjems
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark; The Centre for Cellular Signal Patterns (CELLPAT), Gustav Wieds Vej 14, Aarhus C, 8000, Denmark; Department of Molecular Biology, University of Aarhus, Aarhus C, 8000, Denmark
| | - Rikke Louise Meyer
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
| | - Karim Rahimi
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark; Department of Molecular Biology, University of Aarhus, Aarhus C, 8000, Denmark
| | - Morten Foss
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
| | | | - Duncan S Sutherland
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark; The Centre for Cellular Signal Patterns (CELLPAT), Gustav Wieds Vej 14, Aarhus C, 8000, Denmark.
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7
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Mankavi F, Ibrahim R, Wang H. Advances in Biomimetic Nerve Guidance Conduits for Peripheral Nerve Regeneration. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2528. [PMID: 37764557 PMCID: PMC10536071 DOI: 10.3390/nano13182528] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/04/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023]
Abstract
Injuries to the peripheral nervous system are a common clinical issue, causing dysfunctions of the motor and sensory systems. Surgical interventions such as nerve autografting are necessary to repair damaged nerves. Even with autografting, i.e., the gold standard, malfunctioning and mismatches between the injured and donor nerves often lead to unwanted failure. Thus, there is an urgent need for a new intervention in clinical practice to achieve full functional recovery. Nerve guidance conduits (NGCs), providing physicochemical cues to guide neural regeneration, have great potential for the clinical regeneration of peripheral nerves. Typically, NGCs are tubular structures with various configurations to create a microenvironment that induces the oriented and accelerated growth of axons and promotes neuron cell migration and tissue maturation within the injured tissue. Once the native neural environment is better understood, ideal NGCs should maximally recapitulate those key physiological attributes for better neural regeneration. Indeed, NGC design has evolved from solely physical guidance to biochemical stimulation. NGC fabrication requires fundamental considerations of distinct nerve structures, the associated extracellular compositions (extracellular matrices, growth factors, and cytokines), cellular components, and advanced fabrication technologies that can mimic the structure and morphology of native extracellular matrices. Thus, this review mainly summarizes the recent advances in the state-of-the-art NGCs in terms of biomaterial innovations, structural design, and advanced fabrication technologies and provides an in-depth discussion of cellular responses (adhesion, spreading, and alignment) to such biomimetic cues for neural regeneration and repair.
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Affiliation(s)
| | | | - Hongjun Wang
- Department of Biomedical Engineering, Semcer Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (F.M.); (R.I.)
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8
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Zhou G, Chen Y, Dai F, Yu X. Chitosan-based nerve guidance conduit with microchannels and nanofibers promotes schwann cells migration and neurite growth. Colloids Surf B Biointerfaces 2023; 221:112929. [DOI: 10.1016/j.colsurfb.2022.112929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/27/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
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9
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Lee S, Patel M, Patel R. Electrospun nanofiber nerve guidance conduits for peripheral nerve regeneration: A review. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111663] [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]
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10
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Liu C, Wang Z, Yao X, Wang M, Huang Z, Li X. Sustained Biochemical Signaling and Contact Guidance by Electrospun Bicomponents as Promising Scaffolds for Nerve Tissue Regeneration. ACS OMEGA 2021; 6:33010-33017. [PMID: 34901652 PMCID: PMC8655927 DOI: 10.1021/acsomega.1c05117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/15/2021] [Indexed: 06/14/2023]
Abstract
Electrospun fibers are excellent delivery vehicles enabling a sustained release of growth factors to elicit favorable cell responses and are increasingly used in tissue engineering. Scaffolds with specific physical/topographical features can also guide cell migration and maturation. Therefore, growth factor-loaded electrospun scaffolds with a designed topography are promising for tissue regeneration. In this investigation, aligned-fiber scaffolds composed of poly(lactic-co-glycolic acid) nanofibers incorporating a glial cell line-derived growth factor and poly (d,l-lactic acid) nanofibers incorporating a nerve growth factor were produced by electrospinning. The scaffolds provided an aligned fibrous topography and a dual release of growth factors. The rat pheochromocytoma cell (PC12 cell) response to produced non-woven and aligned-fiber scaffolds with/without growth factors was studied. The dual release of growth factors and topographical cues provided by aligned-fiber bicomponent scaffolds induced significant neurite extension, neuronal differentiation, and neurite alignment in a synergistic manner. The scaffolds with predesigned biochemical/topographical cues demonstrated in this study might be promising for nerve tissue repair.
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Affiliation(s)
- Chaoyu Liu
- Department
of Research and Development, Shenzhen Shiningbiotek
Company Limited, Shenzhen 518055, China
| | - Zhiping Wang
- Department
of Research and Development, Shenzhen Anlv
Medical Technology Company Limited, Shenzhen 518055, China
| | - Xumei Yao
- Department
of Research and Development, Shenzhen Shiningbiotek
Company Limited, Shenzhen 518055, China
| | - Min Wang
- Department
of Mechanical Engineering, The University
of Hong Kong, Pokfulam
Road, Hong Kong 999077, China
| | - Zhigang Huang
- Department
of General Practice, Peking University Shenzhen
Hospital, Shenzhen 518036, China
| | - Xiaohua Li
- Department
of Research and Development, Shenzhen Shiningbiotek
Company Limited, Shenzhen 518055, China
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11
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Behere I, Ingavle G. In vitro and in vivo advancement of multifunctional electrospun nanofiber scaffolds in wound healing applications: Innovative nanofiber designs, stem cell approaches, and future perspectives. J Biomed Mater Res A 2021; 110:443-461. [PMID: 34390324 DOI: 10.1002/jbm.a.37290] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/30/2021] [Accepted: 07/29/2021] [Indexed: 01/10/2023]
Abstract
The skin is one of the most essential tissues in the human body, interacting with the outside environment and shielding the body from diseases and excessive water loss. Hydrogels, decellularized porcine dermal matrix, and lyophilized polymer scaffolds have all been used in studies of skin wound repair, wound dressing, and skin tissue engineering, however, these materials cannot replicate the nanofibrous architecture of the skin's native extracellular matrix (ECM). Electrospun nanofibers are a fascinating new form of nanomaterials with tremendous potential across a broad spectrum of applications in the biomedical field, including wound dressings, wound healing scaffolds, regenerative medicine, bioengineering of skin tissue, and multifaceted drug delivery. This article reviews recent in vitro and in vivo developments in multifunctional electrospun nanofibers (MENs) for wound healing. This review begins with an introduction to the electrospinning process, its principle, and the processing parameters which have a significant impact on the nanofiber properties. It then discusses the various geometries and advantages of MEN scaffolds produced by different innovative electrospinning techniques for wound healing applications when used in combination with stem cells. This review also discusses some of the possible future nanofiber-based models that could be used. Finally, we conclude with potential perspectives and conclusions in this area.
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Affiliation(s)
- Isha Behere
- Symbiosis Centre for Stem Cell Research (SCSCR), Symbiosis International (Deemed University), Pune, India
| | - Ganesh Ingavle
- Symbiosis Centre for Stem Cell Research (SCSCR), Symbiosis International (Deemed University), Pune, India
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12
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Song S, McConnell KW, Amores D, Levinson A, Vogel H, Quarta M, Rando TA, George PM. Electrical stimulation of human neural stem cells via conductive polymer nerve guides enhances peripheral nerve recovery. Biomaterials 2021; 275:120982. [PMID: 34214785 DOI: 10.1016/j.biomaterials.2021.120982] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 06/02/2021] [Accepted: 06/17/2021] [Indexed: 01/09/2023]
Abstract
Severe peripheral nerve injuries often result in permanent loss of function of the affected limb. Current treatments are limited by their efficacy in supporting nerve regeneration and behavioral recovery. Here we demonstrate that electrical stimulation through conductive nerve guides (CNGs) enhances the efficacy of human neural progenitor cells (hNPCs) in treating a sciatic nerve transection in rats. Electrical stimulation strengthened the therapeutic potential of NPCs by upregulating gene expression of neurotrophic factors which are critical in augmenting synaptic remodeling, nerve regeneration, and myelination. Electrically-stimulated hNPC-containing CNGs are significantly more effective in improving sensory and motor functions starting at 1-2 weeks after treatment than either treatment alone. Electrophysiology and muscle assessment demonstrated successful re-innervation of the affected target muscles in this group. Furthermore, histological analysis highlighted an increased number of regenerated nerve fibers with thicker myelination in electrically-stimulated hNPC-containing CNGs. The elevated expression of tyrosine kinase receptors (Trk) receptors, known to bind to neurotrophic factors, indicated the long-lasting effect from electrical stimulation on nerve regeneration and distal nerve re-innervation. These data suggest that electrically-enhanced stem cell-based therapy provides a regenerative rehabilitative approach to promote peripheral nerve regeneration and functional recovery.
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Affiliation(s)
- Shang Song
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Kelly W McConnell
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Danielle Amores
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Alexa Levinson
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Hannes Vogel
- Department of Pathology, Stanford University, Stanford, CA, USA
| | - Marco Quarta
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA, USA; Center for Tissue Regeneration, Restoration and Repair, Veterans Affairs Hospital, Palo Alto, CA, USA
| | - Thomas A Rando
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA, USA; Center for Tissue Regeneration, Restoration and Repair, Veterans Affairs Hospital, Palo Alto, CA, USA
| | - Paul M George
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA; Stanford Stroke Center and Stanford University School of Medicine, Stanford, CA, USA.
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13
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Liu C, Li X, Zhao Q, Xie Y, Yao X, Wang M, Cao F. Nanofibrous bicomponent scaffolds for the dual delivery of NGF and GDNF: controlled release of growth factors and their biological effects. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:9. [PMID: 33471206 PMCID: PMC7817556 DOI: 10.1007/s10856-020-06479-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 12/18/2020] [Indexed: 06/01/2023]
Abstract
Electrospun fibrous scaffolds capable of providing dual growth factor delivery in a controlled manner have distinctive advantages for tissue engineering. In this study, we have investigated the formation, structure, and characteristics/properties of fibrous bicomponent scaffolds for the dual delivery of glial cell line-derived neurotrophic factor (GDNF) and nerve growth factor (NGF) for peripheral nerve tissue regeneration. GDNF and NGF were incorporated into core-shell structured poly(lactic-co-glycolic acid) (PLGA) and poly (D,L-lactic acid) (PDLLA) nanofibers, respectively, through emulsion electrospinning. Using dual-source dual-power electrospinning, bicomponent scaffolds composed of GDNF/PLGA fibers and NGF/PDLLA fibers with different fiber component ratios were produced. The structure, properties, and in vitro release behavior of mono- and bicomponent scaffolds were systematically investigated. Concurrent and sustained release of GDNF and NGF from bicomponent scaffolds was achieved and their release profiles could be tuned. In vitro biological investigations were conducted. Rat pheochromocytoma cells were found to attach, spread, and proliferate on all scaffolds. The release of growth factors from scaffolds could induce much improved neurite outgrowth and neural differentiation. GDNF and NGF released from GDNF/PLGA scaffolds and NGF/PDLLA scaffolds, respectively, could induce dose-dependent neural differentiation separately. GDNF and NGF released from bicomponent scaffolds exerted a synergistic effect on promoting neural differentiation.
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Affiliation(s)
- Chaoyu Liu
- Department of Research and Development, Shenzhen Shiningbiotek Co., Ltd, Shenzhen, 518055, P. R. China.
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China.
| | - Xiaohua Li
- Department of Research and Development, Shenzhen Shiningbiotek Co., Ltd, Shenzhen, 518055, P. R. China
- Oncology Center, Hubei University of Medicine, Shiyan, 442000, P. R. China
| | - Qilong Zhao
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, P. R. China
| | - Yuancai Xie
- Department of Thoracic, Peking University Shenzhen Hospital, Shenzhen, 518036, P. R. China
| | - Xumei Yao
- Department of Research and Development, Shenzhen Shiningbiotek Co., Ltd, Shenzhen, 518055, P. R. China
| | - Min Wang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Fengjun Cao
- Oncology Center, Hubei University of Medicine, Shiyan, 442000, P. R. China.
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14
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Stewart CE, Kan CFK, Stewart BR, Sanicola HW, Jung JP, Sulaiman OAR, Wang D. Machine intelligence for nerve conduit design and production. J Biol Eng 2020; 14:25. [PMID: 32944070 PMCID: PMC7487837 DOI: 10.1186/s13036-020-00245-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 08/13/2020] [Indexed: 02/08/2023] Open
Abstract
Nerve guidance conduits (NGCs) have emerged from recent advances within tissue engineering as a promising alternative to autografts for peripheral nerve repair. NGCs are tubular structures with engineered biomaterials, which guide axonal regeneration from the injured proximal nerve to the distal stump. NGC design can synergistically combine multiple properties to enhance proliferation of stem and neuronal cells, improve nerve migration, attenuate inflammation and reduce scar tissue formation. The aim of most laboratories fabricating NGCs is the development of an automated process that incorporates patient-specific features and complex tissue blueprints (e.g. neurovascular conduit) that serve as the basis for more complicated muscular and skin grafts. One of the major limitations for tissue engineering is lack of guidance for generating tissue blueprints and the absence of streamlined manufacturing processes. With the rapid expansion of machine intelligence, high dimensional image analysis, and computational scaffold design, optimized tissue templates for 3D bioprinting (3DBP) are feasible. In this review, we examine the translational challenges to peripheral nerve regeneration and where machine intelligence can innovate bottlenecks in neural tissue engineering.
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Affiliation(s)
- Caleb E. Stewart
- Current Affiliation: Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport Louisiana, USA
| | - Chin Fung Kelvin Kan
- Current Affiliation: Department of General Surgery, Brigham and Women’s Hospital, Boston, MA 02115 USA
| | - Brody R. Stewart
- Current Affiliation: Department of Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Henry W. Sanicola
- Current Affiliation: Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport Louisiana, USA
| | - Jangwook P. Jung
- Department of Biological Engineering, Louisiana State University, Baton Rouge, LA 70803 USA
| | - Olawale A. R. Sulaiman
- Ochsner Neural Injury & Regeneration Laboratory, Ochsner Clinic Foundation, New Orleans, LA 70121 USA
- Department of Neurosurgery, Ochsner Clinic Foundation, New Orleans, 70121 USA
| | - Dadong Wang
- Quantitative Imaging Research Team, Data 61, Commonwealth Scientific and Industrial Research Organization, Marsfield, NSW 2122 Australia
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15
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Shen X, Yang Y, Tian S, Zhao Y, Chen T. Microfluidic array chip based on excimer laser processing technology for the construction of in vitro graphical neuronal network. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520918395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To construct a graphical neural network in vitro and explore the morphological effects of neural network structural changes on neurons, this study aimed to introduce a method for fabricating microfluidic array chips with different graphical structures based on 248-nm excimer laser one-step etching. Through the comparative analysis of the graphical neural network cultured on our microfluidic array chip with the one on the glass slide, the morphological effects of the neural network on the morphology of the neurons were studied. First, the design of the chip was completed according to the specific structure of the neurons and the simulation of the flow field. The chips were fabricated by excimer laser processing combined with the casting technology. Neurons were cultured on the chip, and a graphical neural network was formed. The growth status of the neural network was analyzed by microscopy and immunofluorescence technology, and compared with the random neural network cultured on glass slides. The results showed that the neurons on the array chips grew in microchannels, and neurites grew along the direction of the channel, interlacing to form a neural network. Furthermore, when the structure of the neural network was graphically changed, the internal neuron morphology changed: on the same culture days, the maximum length of the neurites of the graphical neural network was higher than the average length of the neurites of the random neural network. This research can provide the foundation for the exploration of the neural network mechanism of neurological diseases.
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Affiliation(s)
- Xuefei Shen
- Institute of Laser Engineering, Beijing University of Technology, Beijing, P.R. China
| | - Yi Yang
- Institute of Laser Engineering, Beijing University of Technology, Beijing, P.R. China
| | - Shanshan Tian
- Institute of Laser Engineering, Beijing University of Technology, Beijing, P.R. China
| | - Yu Zhao
- Institute of Laser Engineering, Beijing University of Technology, Beijing, P.R. China
| | - Tao Chen
- Institute of Laser Engineering, Beijing University of Technology, Beijing, P.R. China
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16
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Yao T, Baker MB, Moroni L. Strategies to Improve Nanofibrous Scaffolds for Vascular Tissue Engineering. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E887. [PMID: 32380699 PMCID: PMC7279151 DOI: 10.3390/nano10050887] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/19/2020] [Accepted: 04/24/2020] [Indexed: 12/25/2022]
Abstract
The biofabrication of biomimetic scaffolds for tissue engineering applications is a field in continuous expansion. Of particular interest, nanofibrous scaffolds can mimic the mechanical and structural properties (e.g., collagen fibers) of the natural extracellular matrix (ECM) and have shown high potential in tissue engineering and regenerative medicine. This review presents a general overview on nanofiber fabrication, with a specific focus on the design and application of electrospun nanofibrous scaffolds for vascular regeneration. The main nanofiber fabrication approaches, including self-assembly, thermally induced phase separation, and electrospinning are described. We also address nanofibrous scaffold design, including nanofiber structuring and surface functionalization, to improve scaffolds' properties. Scaffolds for vascular regeneration with enhanced functional properties, given by providing cells with structural or bioactive cues, are discussed. Finally, current in vivo evaluation strategies of these nanofibrous scaffolds are introduced as the final step, before their potential application in clinical vascular tissue engineering can be further assessed.
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Affiliation(s)
| | | | - Lorenzo Moroni
- Complex Tissue Regeneration Department, MERLN Institute for Technology Inspired Regenerative Medicine, Universiteitssingel 40, 6229ER Maastricht, The Netherlands; (T.Y.); (M.B.B.)
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17
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Vijayavenkataraman S. Nerve guide conduits for peripheral nerve injury repair: A review on design, materials and fabrication methods. Acta Biomater 2020; 106:54-69. [PMID: 32044456 DOI: 10.1016/j.actbio.2020.02.003] [Citation(s) in RCA: 237] [Impact Index Per Article: 59.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 12/19/2022]
Abstract
Peripheral nerves can sustain injuries due to loss of structure and/or function of peripheral nerves because of accident, trauma and other causes, which leads to partial or complete loss of sensory, motor, and autonomic functions and neuropathic pain. Even with the extensive knowledge on the pathophysiology and regeneration mechanisms of peripheral nerve injuries (PNI), reliable treatment methods that ensure full functional recovery are scant. Nerve autografting is the current gold standard for treatment of PNI. Given the limitations of autografts including donor site morbidity and limited supply, alternate treatment methods are being pursued by the researchers. Neural guide conduits (NGCs) are increasingly being considered as a potential alternative to nerve autografts. The anatomy of peripheral nerves, classification of PNI, and current treatment methods are briefly yet succinctly reviewed. A detailed review on the various designs of NGCs, the different materials used for making the NGCs, and the fabrication methods adopted is presented in this work. Much progress had been made in all the aspects of making an NGC, including the design, materials and fabrication techniques. The advent of advanced technologies such as additive manufacturing and 3D bioprinting could be beneficial in easing the production of patient-specific NGCs. NGCs with supporting cells or stem cells, NGCs loaded with neurotropic factors and drugs, and 4D printed NGCs are some of the futuristic areas of interest. STATEMENT OF SIGNIFICANCE: Neural guide conduits (NGCs) are increasingly being considered as a potential alternative to nerve autografts in the treatment of peripheral nerve injuries. A detailed review on the various designs of NGCs, the different materials used for making the NGCs, and the fabrication methods (including Additive Manufacturing) adopted is presented in this work.
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Affiliation(s)
- Sanjairaj Vijayavenkataraman
- Division of Engineering, New York University Abu Dhabi, UAE; Department of Mechanical and Aerospace Engineering, Tandon School of Engineering, New York University, NY, USA.
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18
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Bayat A, Ramazani S. A. A. Biocompatible conductive alginate/polyaniline-graphene neural conduits fabricated using a facile solution extrusion technique. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1725764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Arman Bayat
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Ahmad Ramazani S. A.
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
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19
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Raza C, Riaz HA, Anjum R, Shakeel NUA. Repair strategies for injured peripheral nerve: Review. Life Sci 2020; 243:117308. [PMID: 31954163 DOI: 10.1016/j.lfs.2020.117308] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/27/2022]
Abstract
Compromised functional regains in about half of the patients following surgical nerve repair pose a serious socioeconomic burden to the society. Although surgical strategies such as end-to-end neurorrhaphy, nerve grafting and nerve transfer are widely applied in distal injuries leading to optimal recovery; however in proximal nerve defects functional outcomes remain unsatisfactory. Biomedical engineering approaches unite the efforts of the surgeons, engineers and biologists to develop regeneration facilitating structures such as extracellular matrix based supportive polymers and tubular nerve guidance channels. Such polymeric structures provide neurotrophic support from injured nerve stumps, retard the fibrous tissue infiltration and guide regenerating axons to appropriate targets. The development and application of nerve guidance conduits (NGCs) to treat nerve gap injuries offer clinically relevant and feasible solutions. Enhanced understanding of the nerve regeneration processes and advances in NGCs design, polymers and fabrication strategies have led to developing modern NGCs with superior regeneration-conducive capacities. Current review focuses on the advances in surgical and engineering approaches to treat peripheral nerve injuries. We suggest the incorporation of endothelial cell growth promoting cues and factors into the NGC interior for its possible enhancement effects on the axonal regeneration process that may result in substantial functional outcomes.
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Affiliation(s)
- Chand Raza
- Department of Zoology, Government College University, Lahore 54000, Pakistan.
| | - Hasib Aamir Riaz
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI 02912, USA
| | - Rabia Anjum
- Department of Zoology, Government College University, Lahore 54000, Pakistan
| | - Noor Ul Ain Shakeel
- Department of Zoology, Government College University, Lahore 54000, Pakistan
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20
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Wu S, Ni S, Jiang X, Kuss MA, Wang HJ, Duan B. Guiding Mesenchymal Stem Cells into Myelinating Schwann Cell-Like Phenotypes by Using Electrospun Core-Sheath Nanoyarns. ACS Biomater Sci Eng 2019; 5:5284-5294. [PMID: 33455233 DOI: 10.1021/acsbiomaterials.9b00748] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nerve guidance conduit (NGC)-infilling substrates have been reported to facilitate the regeneration of injured peripheral nerves (PNs), especially for large nerve gaps. In this study, longitudinally oriented electrospun core-sheath nanoyarns (csNYs), consisting of a polylactic acid microfiber core and an electrospun nanofiber sheath, were fabricated for potential PN tissue engineering applications. Our novel csNY displayed a well-aligned nanofibrous surface topography, resembling the ultrastructure of axons and fascicles of a native PN system, and it also provided a mechanically stable structure. The biological results showed that the csNY significantly enhanced the attachment, growth, and proliferation of human adipose derived mesenchymal stem cells (hADMSC) and also promoted the migration, proliferation, and phenotype maintenance of rabbit Schwann cells (rSCs). Our csNY notably increased the differentiation capability of hADMSC into SC-like cells (hADMSC-SC), in comparison with a 2D tissue culture polystyrene plate. More importantly, when combined with the appropriate induction medium, our csNY promoted hADMSC-SC to express high levels of myelination-associated markers. Overall, this study demonstrates that our csNYs have great potential to serve as not only ideal in vitro culture models for understanding SC-axon interaction and SC myelination but also as promising NGC-infilling substrates for PN regeneration applications.
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Affiliation(s)
- Shaohua Wu
- College of Textiles & Clothing; Collaborative Innovation Center of Marine Biomass Fibers, Qingdao University, Qingdao 266071, China
| | - Shilei Ni
- Department of Neurosurgery, Qilu Hospital of Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, China
| | | | | | | | - Bin Duan
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
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21
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Porzionato A, Barbon S, Stocco E, Dalzoppo D, Contran M, De Rose E, Parnigotto PP, Macchi V, Grandi C, De Caro R. Development of Oxidized Polyvinyl Alcohol-Based Nerve Conduits Coupled with the Ciliary Neurotrophic Factor. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1996. [PMID: 31234386 PMCID: PMC6631399 DOI: 10.3390/ma12121996] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/09/2019] [Accepted: 06/19/2019] [Indexed: 12/14/2022]
Abstract
Functionalized synthetic conduits represent a promising strategy to enhance peripheral nerve regeneration by guiding axon growth while delivering therapeutic neurotrophic factors. In this work, hollow nerve conduits made of polyvinyl alcohol partially oxidized with bromine (OxPVA_Br2) and potassium permanganate (OxPVA_KMnO4) were investigated for their structural/biological properties and ability to absorb/release the ciliary neurotrophic factor (CNTF). Chemical oxidation enhanced water uptake capacity of the polymer, with maximum swelling index of 60.5% ± 2.5%, 71.3% ± 3.6% and 19.5% ± 4.0% for OxPVA_Br2, OxPVA_KMnO4 and PVA, respectively. Accordingly, hydrogel porosity increased from 15.27% ± 1.16% (PVA) to 62.71% ± 8.63% (OxPVA_Br2) or 77.50% ± 3.39% (OxPVA_KMnO4) after oxidation. Besides proving that oxidized PVA conduits exhibited mechanical resistance and a suture holding ability, they did not exert a cytotoxic effect on SH-SY5Y and Schwann cells and biodegraded over time when subjected to enzymatic digestion, functionalization with CNTF was performed. Interestingly, higher amounts of neurotrophic factor were detected in the lumen of OxPVA_Br2 (0.22 ± 0.029 µg) and OxPVA_KMnO4 (0.29 ± 0.033 µg) guides rather than PVA (0.11 ± 0.021 µg) tubular scaffolds. In conclusion, we defined a promising technology to obtain drug delivery conduits based on functionalizable oxidized PVA hydrogels.
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Affiliation(s)
- Andrea Porzionato
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121 Padova, Italy.
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via N. Giustiniani 2, 35128 Padova, Italy.
| | - Silvia Barbon
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121 Padova, Italy.
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via N. Giustiniani 2, 35128 Padova, Italy.
| | - Elena Stocco
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121 Padova, Italy.
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via N. Giustiniani 2, 35128 Padova, Italy.
| | - Daniele Dalzoppo
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via F. Marzolo 5, 35128 Padova, Italy.
| | - Martina Contran
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121 Padova, Italy.
| | - Enrico De Rose
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121 Padova, Italy.
| | - Pier Paolo Parnigotto
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling (T.E.S.) Onlus, 35030 Padua, Italy.
| | - Veronica Macchi
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121 Padova, Italy.
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via N. Giustiniani 2, 35128 Padova, Italy.
| | - Claudio Grandi
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via F. Marzolo 5, 35128 Padova, Italy.
| | - Raffaele De Caro
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121 Padova, Italy.
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via N. Giustiniani 2, 35128 Padova, Italy.
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22
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Passipieri JA, Dienes J, Frank J, Glazier J, Portell A, Venkatesh KP, Bliley JM, Grybowski D, Schilling BK, Marra KG, Christ GJ. Adipose Stem Cells Enhance Nerve Regeneration and Muscle Function in a Peroneal Nerve Ablation Model. Tissue Eng Part A 2019; 27:297-310. [PMID: 30760135 DOI: 10.1089/ten.tea.2018.0244] [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] [Indexed: 12/14/2022] Open
Abstract
Severe peripheral nerve injuries have devastating consequences on the quality of life in affected patients, and they represent a significant unmet medical need. Destruction of nerve fibers results in denervation of targeted muscles, which, subsequently, undergo progressive atrophy and loss of function. Timely restoration of neural innervation to muscle fibers is crucial to the preservation of muscle homeostasis and function. The goal of this study was to evaluate the impact of addition of adipose stem cells (ASCs) to polycaprolactone (PCL) nerve conduit guides on peripheral nerve repair and functional muscle recovery in the setting of a critical size nerve defect. To this end, peripheral nerve injury was created by surgically ablating 6 mm of the common peroneal nerve in a rat model. A PCL nerve guide, filled with ASCs and/or poloxamer hydrogel, was sutured to the nerve ends. Negative and positive controls included nerve ablation only (no repair), and reversed polarity autograft nerve implant, respectively. Tibialis anterior (TA) muscle function was assessed at 4, 8, and 12 weeks postinjury, and nerve and muscle tissue was retrieved at the 12-week terminal time point. Inclusion of ASCs in the PCL nerve guide elicited statistically significant time-dependent increases in functional recovery (contraction) after denervation; ∼25% higher than observed in acellular (poloxamer-filled) implants and indistinguishable from autograft implants, respectively, at 12 weeks postinjury (p < 0.05, n = 7-8 in each group). Analysis of single muscle fiber cross-sectional area (CSA) revealed that ASC-based treatment of nerve injury provided a better recapitulation of the overall distribution of muscle fiber CSAs observed in the contralateral TA muscle of uninjured limbs. In addition, the presence of ASCs was associated with improved features of re-innervation distal to the defect, with respect to neurofilament and S100 (Schwann cell marker) expression. In conclusion, these initial studies indicate significant benefits of inclusion of ASCs to the rate and magnitude of both peripheral nerve regeneration and functional recovery of muscle contraction, to levels equivalent to autograft implantation. These findings have important implications to improved nerve repair, and they provide input for future work directed to restoration of nerve and muscle function after polytraumatic injury. Impact Statement This works explores the application of adipose stem cells (ASCs) for peripheral nerve regeneration in a rat model. Herein, we demonstrate that the addition of ASCs in poloxamer-filled PCL nerve guide conduits impacts nerve regeneration and recovery of muscle function, to levels equivalent to autograft implantation, which is considered to be the current gold standard treatment. This study builds on the importance of a timely restoration of innervation to muscle fibers for preservation of muscle homeostasis, and it will provide input for future work aiming at restoring nerve and muscle function after polytraumatic injury.
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Affiliation(s)
- Juliana A Passipieri
- Biomedical Engineering Department, University of Virginia, Charlottesville, Virginia
| | - Jack Dienes
- Biomedical Engineering Department, University of Virginia, Charlottesville, Virginia
| | - Joseph Frank
- Biomedical Engineering Department, University of Virginia, Charlottesville, Virginia
| | - Joshua Glazier
- Biomedical Engineering Department, University of Virginia, Charlottesville, Virginia
| | - Andrew Portell
- Biomedical Engineering Department, University of Virginia, Charlottesville, Virginia
| | - Kaushik P Venkatesh
- Department of Bioengineering and University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jacqueline M Bliley
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Damian Grybowski
- Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Benjamin K Schilling
- Department of Bioengineering and University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Kacey G Marra
- Department of Bioengineering and University of Pittsburgh, Pittsburgh, Pennsylvania.,Department of Plastic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - George J Christ
- Biomedical Engineering Department, University of Virginia, Charlottesville, Virginia.,Orthopaedics Department, University of Virginia, Charlottesville, Virginia
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23
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Peña B, Maldonado M, Bonham AJ, Aguado BA, Dominguez-Alfaro A, Laughter M, Rowland TJ, Bardill J, Farnsworth NL, Ramon NA, Taylor MRG, Anseth KS, Prato M, Shandas R, McKinsey TA, Park D, Mestroni L. Gold Nanoparticle-Functionalized Reverse Thermal Gel for Tissue Engineering Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18671-18680. [PMID: 31021594 PMCID: PMC6764451 DOI: 10.1021/acsami.9b00666] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Utilizing polymers in cardiac tissue engineering holds promise for restoring function to the heart following myocardial infarction, which is associated with grave morbidity and mortality. To properly mimic native cardiac tissue, materials must not only support cardiac cell growth but also have inherent conductive properties. Here, we present an injectable reverse thermal gel (RTG)-based cardiac cell scaffold system that is both biocompatible and conductive. Following the synthesis of a highly functionalizable, biomimetic RTG backbone, gold nanoparticles (AuNPs) were chemically conjugated to the backbone to enhance the system's conductivity. The resulting RTG-AuNP hydrogel supported targeted survival of neonatal rat ventricular myocytes (NRVMs) for up to 21 days when cocultured with cardiac fibroblasts, leading to an increase in connexin 43 (Cx43) relative to control cultures (NRVMs cultured on traditional gelatin-coated dishes and RTG hydrogel without AuNPs). This biomimetic and conductive RTG-AuNP hydrogel holds promise for future cardiac tissue engineering applications.
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Affiliation(s)
- Brisa Peña
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Marcos Maldonado
- Department of Chemistry and Biochemistry, Metropolitan State University of Denver, 1201 5th Street, Denver, Colorado 80206, United States
| | - Andrew J. Bonham
- Department of Chemistry and Biochemistry, Metropolitan State University of Denver, 1201 5th Street, Denver, Colorado 80206, United States
| | - Brian A. Aguado
- Department of Chemical and Biological Engineering and the BioFrontiers Institute, University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80309, United States
| | - Antonio Dominguez-Alfaro
- Department of Chemical and Biological Engineering and the BioFrontiers Institute, University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80309, United States
- POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, 20018 Donostia-San Sebastian, Spain
| | - Melissa Laughter
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Teisha J. Rowland
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - James Bardill
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Nikki L. Farnsworth
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
- Department of Pediatrics, University of Colorado Denver, Anschutz Medical Campus, 1775 Aurora Ct., Bldg. M20, Aurora, Colorado 80045, United States
| | - Nuria Alegret Ramon
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
- POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, 20018 Donostia-San Sebastian, Spain
| | - Matthew R. G. Taylor
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering and the BioFrontiers Institute, University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80309, United States
| | - Maurizio Prato
- Department of Chemical and Biological Engineering and the BioFrontiers Institute, University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80309, United States
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, Trieste 34127, Italy
- Basque Fdn Sci, Ikerbasque, Bilbao 48013, Spain
| | - Robin Shandas
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Timothy A. McKinsey
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
- Consortium for Fibrosis Research & Translation, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Daewon Park
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Luisa Mestroni
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
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Wang G, Wu W, Yang H, Zhang P, Wang J. Intact polyaniline coating as a conductive guidance is beneficial to repairing sciatic nerve injury. J Biomed Mater Res B Appl Biomater 2019; 108:128-142. [DOI: 10.1002/jbm.b.34372] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 12/13/2018] [Accepted: 03/05/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Guowu Wang
- School of Biomedical EngineeringShanghai Jiao Tong University Shanghai 200240 China
| | - Weifeng Wu
- School of Biomedical EngineeringShanghai Jiao Tong University Shanghai 200240 China
| | - Hui Yang
- School of Biomedical EngineeringShanghai Jiao Tong University Shanghai 200240 China
| | - Ping Zhang
- School of Life Sciences and BiotechnologyShanghai Jiao Tong University Shanghai 200240 China
| | - Jin‐Ye Wang
- School of Biomedical EngineeringShanghai Jiao Tong University Shanghai 200240 China
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Glycans and glycosaminoglycans in neurobiology: key regulators of neuronal cell function and fate. Biochem J 2018; 475:2511-2545. [PMID: 30115748 DOI: 10.1042/bcj20180283] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/14/2018] [Accepted: 07/18/2018] [Indexed: 12/16/2022]
Abstract
The aim of the present study was to examine the roles of l-fucose and the glycosaminoglycans (GAGs) keratan sulfate (KS) and chondroitin sulfate/dermatan sulfate (CS/DS) with selected functional molecules in neural tissues. Cell surface glycans and GAGs have evolved over millions of years to become cellular mediators which regulate fundamental aspects of cellular survival. The glycocalyx, which surrounds all cells, actuates responses to growth factors, cytokines and morphogens at the cellular boundary, silencing or activating downstream signaling pathways and gene expression. In this review, we have focused on interactions mediated by l-fucose, KS and CS/DS in the central and peripheral nervous systems. Fucose makes critical contributions in the area of molecular recognition and information transfer in the blood group substances, cytotoxic immunoglobulins, cell fate-mediated Notch-1 interactions, regulation of selectin-mediated neutrophil extravasation in innate immunity and CD-34-mediated new blood vessel development, and the targeting of neuroprogenitor cells to damaged neural tissue. Fucosylated glycoproteins regulate delivery of synaptic neurotransmitters and neural function. Neural KS proteoglycans (PGs) were examined in terms of cellular regulation and their interactive properties with neuroregulatory molecules. The paradoxical properties of CS/DS isomers decorating matrix and transmembrane PGs and the positive and negative regulatory cues they provide to neurons are also discussed.
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Zhao YH, Niu CM, Shi JQ, Wang YY, Yang YM, Wang HB. Novel conductive polypyrrole/silk fibroin scaffold for neural tissue repair. Neural Regen Res 2018; 13:1455-1464. [PMID: 30106059 PMCID: PMC6108196 DOI: 10.4103/1673-5374.235303] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2018] [Indexed: 11/17/2022] Open
Abstract
Three dimensional (3D) bioprinting, which involves depositing bioinks (mixed biomaterials) layer by layer to form computer-aided designs, is an ideal method for fabricating complex 3D biological structures. However, it remains challenging to prepare biomaterials with micro-nanostructures that accurately mimic the nanostructural features of natural tissues. A novel nanotechnological tool, electrospinning, permits the processing and modification of proper nanoscale biomaterials to enhance neural cell adhesion, migration, proliferation, differentiation, and subsequent nerve regeneration. The composite scaffold was prepared by combining 3D bioprinting with subsequent electrochemical deposition of polypyrrole and electrospinning of silk fibroin to form a composite polypyrrole/silk fibroin scaffold. Fourier transform infrared spectroscopy was used to analyze scaffold composition. The surface morphology of the scaffold was observed by light microscopy and scanning electron microscopy. A digital multimeter was used to measure the resistivity of prepared scaffolds. Light microscopy was applied to observe the surface morphology of scaffolds immersed in water or Dulbecco's Modified Eagle's Medium at 37°C for 30 days to assess stability. Results showed characteristic peaks of polypyrrole and silk fibroin in the synthesized conductive polypyrrole/silk fibroin scaffold, as well as the structure of the electrospun nanofiber layer on the surface. The electrical conductivity was 1 × 10-5-1 × 10-3 S/cm, while stability was 66.67%. A 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide assay was employed to measure scaffold cytotoxicity in vitro. Fluorescence microscopy was used to observe EdU-labeled Schwann cells to quantify cell proliferation. Immunohistochemistry was utilized to detect S100β immunoreactivity, while scanning electron microscopy was applied to observe the morphology of adherent Schwann cells. Results demonstrated that the polypyrrole/silk fibroin scaffold was not cytotoxic and did not affect Schwann cell proliferation. Moreover, filopodia formed on the scaffold and Schwann cells were regularly arranged. Our findings verified that the composite polypyrrole/silk fibroin scaffold has good biocompatibility and may be a suitable material for neural tissue engineering.
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Affiliation(s)
- Ya-Hong Zhao
- Key Laboratory of Science and Technology of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Chang-Mei Niu
- Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Jia-Qi Shi
- Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Ying-Yu Wang
- Wen Zheng College, Soochow University, Suzhou, Jiangsu Province, China
| | - Yu-Min Yang
- Key Laboratory of Science and Technology of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Hong-Bo Wang
- Key Laboratory of Science and Technology of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
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Liu C, Li X, Xu F, Cong H, Li Z, Song Y, Wang M. Spatio-temporal release of NGF and GDNF from multi-layered nanofibrous bicomponent electrospun scaffolds. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:102. [PMID: 29955977 PMCID: PMC6022522 DOI: 10.1007/s10856-018-6105-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 06/14/2018] [Indexed: 06/02/2023]
Abstract
Scaffolds capable of providing dual neurotrophic factor (NTF) delivery with different release kinetics, spatial delivery of NTFs at different loci and topographical guidance are promising for enhanced peripheral nerve regeneration. In this study, we have designed and fabricated multi-layered aligned-fiber scaffolds through combining emulsion electrospinning, sequential electrospinning and high-speed electrospinning (HS-ES) to modulate the release behavior of glial cell line-derived growth factor(GDNF) and nerve growth factor (NGF). GDNF and NGF were incorporated into poly(lactic-co-glycolic acid) (PLGA) fibers and poly(D,L-lactic acid) (PDLLA) fibers, respectively. Aligned fibers were obtained in each layer of multi-layered scaffolds and relatively thick tri-layered and tetra-layered scaffolds with controlled layer thickness were obtained. Their morphology, structure, properties, and the in vitro release of growth factors were examined. Dual and spatio-temporal release of GDNF and NGF with different release kinetics from multi-layered scaffolds was successfully demonstrated. High separation efficiency by PDLLA fibrous barrier layer for spatial neurotrophic factor delivery from both tri-layered scaffolds and tetra-layered scaffolds was achieved.
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Affiliation(s)
- Chaoyu Liu
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
- Department of Research and Development, Shenzhen Gene Health Bio Tech Co., Ltd, Shenzhen, 518055, China.
| | - Xiaohua Li
- Department of Research and Development, Shenzhen Gene Health Bio Tech Co., Ltd, Shenzhen, 518055, China
| | - Feiyue Xu
- Department of Research and Development, Shenzhen Gene Health Bio Tech Co., Ltd, Shenzhen, 518055, China
| | - Haibo Cong
- Department of Reconstructive Microsurgery, Weihai Central Hospital, Weihai, 264400, China
| | - Zongxian Li
- Department of Oncology, Weihai Central Hospital, Weihai, 264400, China
| | - Yuan Song
- Department of Research and Development, Shenzhen Gene Health Bio Tech Co., Ltd, Shenzhen, 518055, China
| | - Min Wang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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Krukiewicz K, Chudy M, Vallejo-Giraldo C, Skorupa M, Więcławska D, Turczyn R, Biggs M. Fractal form PEDOT/Au assemblies as thin-film neural interface materials. Biomed Mater 2018; 13:054102. [DOI: 10.1088/1748-605x/aabced] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Nanofibrous Nerve Conduits with Pre-seeded Bone Marrow Stromal Cells and Cultured by Bioreactor for Enhancing Peripheral Nerve Regeneration. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0057-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Liu C, Wang C, Zhao Q, Li X, Xu F, Yao X, Wang M. Incorporation and release of dual growth factors for nerve tissue engineering using nanofibrous bicomponent scaffolds. ACTA ACUST UNITED AC 2018. [PMID: 29537390 DOI: 10.1088/1748-605x/aab693] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Electrospun fibrous scaffolds have been extensively used as cell-supporting matrices or delivery vehicles for various biomolecules in tissue engineering. Biodegradable scaffolds with tunable degradation behaviors are favorable for various resorbable tissue replacements. In nerve tissue engineering, delivery of growth factors (GFs) such as nerve growth factor (NGF) and glial cell line-derived neurotrophic factor (GDNF) from scaffolds can be used to promote peripheral nerve repair. In this study, using the established dual-source dual-power electrospinning technique, bicomponent scaffolds incorporated with NGF and GDNF were designed and demonstrated as a strategy to develop scaffolds providing dual GF delivery. NGF and GDNF were encapsulated in poly(D, L-lactic acid) (PDLLA) and poly(lactic-co-glycolic acid) (PLGA) nanofibers, respectively, via emulsion electrospinning. Bicomponent scaffolds with various mass ratios of GDNF/PLGA fibers to NGF/PDLLA fibers were fabricated. Their morphology, structure, properties, and the in vitro degradation were examined. Both types of core-shell structured fibers were evenly distributed in bicomponent scaffolds. Robust scaffolds with varying component ratios were fabricated with average fiber diameter ranging from 307 ± 100 nm to 688 ± 129 nm. The ultimate tensile stress and elastic modulus could be tuned ranging from 0.23 ± 0.07 MPa to 1.41 ± 0.23 MPa, 11.1 ± 3.0 MPa to 75.9 ± 3.3 MPa, respectively. Adjustable degradation was achieved and the weight loss of scaffolds ranged from 9.2% to 44.0% after 42 day degradation test. GDNF and NGF were incorporated with satisfactory encapsulation efficiency and their bioactivity were well preserved. Sustained release of both types of GFs was also achieved.
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Affiliation(s)
- Chaoyu Liu
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China. Department of Research and Development, Shenzhen Gene Health Bio Tech Co., Ltd, Shenzhen, 518055, People's Republic of China
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Pawelec KM, Koffler J, Shahriari D, Galvan A, Tuszynski MH, Sakamoto J. Microstructure and in vivo characterization of multi-channel nerve guidance scaffolds. ACTA ACUST UNITED AC 2018; 13:044104. [PMID: 29411711 DOI: 10.1088/1748-605x/aaad85] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In a previous study, we demonstrated a novel manufacturing approach to fabricate multi-channel scaffolds (MCS) for use in spinal cord injuries (SCI). In the present study, we extended similar materials processing technology to fabricate significantly longer (5X) porous poly caprolactone (PCL) MCS and evaluated their efficacy in 1 cm sciatic peripheral nerve injury (PNI) model. Due to the increase in MCS dimensions and the challenges that may arise in a longer nerve gap model, microstructural characterization involved MCS wall permeability to assess nutrient flow, topography, and microstructural uniformity to evaluate the potential for homogeneous linear axon guidance. It was determined that the wall permeability dramatically varied from 0.02 ± 0.01 × 10-13 to 21.7 ± 11.4 × 10-13 m2 for 50% and 70% porous PCL, respectively. Using interferometry, the porous PCL surface roughness was determined to be 10.7 ± 1.2 μm, which is believed to be sufficient to promote cell integration. Using micro computed tomography, the 3D MCS microstructure was determined to be uniform over 1 cm with an open lumen volume of 44.6% ± 3.6%. In vivo implantation, in the rat sciatic nerve model, over 4 weeks, demonstrated that MCS scaffolds maintained structural integrity, were biocompatible, and supported linear axon guidance and distal end egress over 1 cm. Taken together, this study demonstrated that MCS technology previously developed for the SCI is also relevant to longer nerve gap PNI.
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Affiliation(s)
- K M Pawelec
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, United States of America
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Liu YC, Lee IC, Lei KF. Toward the Development of an Artificial Brain on a Micropatterned and Material-Regulated Biochip by Guiding and Promoting the Differentiation and Neurite Outgrowth of Neural Stem/Progenitor Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:5269-5277. [PMID: 29400947 DOI: 10.1021/acsami.7b17863] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An in vitro model mimicking the in vivo environment of the brain must be developed to study neural communication and regeneration and to obtain an understanding of cellular and molecular responses. In this work, a multilayered neural network was successfully constructed on a biochip by guiding and promoting neural stem/progenitor cell differentiation and network formation. The biochip consisted of 3 × 3 arrays of cultured wells connected with channels. Neurospheroids were cultured on polyelectrolyte multilayer (PEM) films in the culture wells. Neurite outgrowth and neural differentiation were guided and promoted by the micropatterns and the PEM films. After 5 days in culture, a 3 × 3 neural network was constructed on the biochip. The function and the connections of the network were evaluated by immunocytochemistry and impedance measurements. Neurons were generated and produced functional and recyclable synaptic vesicles. Moreover, the electrical connections of the neural network were confirmed by measuring the impedance across the neurospheroids. The current work facilitates the development of an artificial brain on a chip for investigations of electrical stimulations and recordings of multilayered neural communication and regeneration.
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Affiliation(s)
- Yung-Chiang Liu
- Ph.D. Program in Biomedical Engineering, College of Engineering, ‡Graduate Institute of Biochemical and Biomedical Engineering, ∥Graduate Institute of Medical Mechatronics, and ⊥Department of Mechanical Engineering, Chang Gung University , Taoyuan 333, Taiwan
- Neurosurgery Department and #Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou , Taoyuan 333, Taiwan
| | - I-Chi Lee
- Ph.D. Program in Biomedical Engineering, College of Engineering, ‡Graduate Institute of Biochemical and Biomedical Engineering, ∥Graduate Institute of Medical Mechatronics, and ⊥Department of Mechanical Engineering, Chang Gung University , Taoyuan 333, Taiwan
- Neurosurgery Department and #Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou , Taoyuan 333, Taiwan
| | - Kin Fong Lei
- Ph.D. Program in Biomedical Engineering, College of Engineering, ‡Graduate Institute of Biochemical and Biomedical Engineering, ∥Graduate Institute of Medical Mechatronics, and ⊥Department of Mechanical Engineering, Chang Gung University , Taoyuan 333, Taiwan
- Neurosurgery Department and #Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou , Taoyuan 333, Taiwan
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Park S, Kim D, Park S, Kim S, Lee D, Kim W, Kim J. Nanopatterned Scaffolds for Neural Tissue Engineering and Regenerative Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1078:421-443. [PMID: 30357636 DOI: 10.1007/978-981-13-0950-2_22] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Biologically inspired approaches employing nanoengineering techniques have been influential in the progress of neural tissue repair and regeneration. Neural tissues are exposed to complex nanoscale environments such as nanofibrils. In this chapter, we summarize representative nanotechniques, such as electrospinning, lithography, and 3D bioprinting, and their use in the design and fabrication of nanopatterned scaffolds for neural tissue engineering and regenerative medicine. Nanotopographical cues in combination with other cues (e.g., chemical cues) are crucial to neural tissue repair and regeneration using cells, including various types of stem cells. Production of biologically inspired nanopatterned scaffolds may encourage the next revolution for studies aiming to advance neural tissue engineering and regenerative medicine.
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Affiliation(s)
- Sunho Park
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, South Korea
| | - Daun Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, South Korea
| | - Sungmin Park
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, South Korea
| | - Sujin Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, South Korea
| | - Dohyeon Lee
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, South Korea
| | - Woochan Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, South Korea
| | - Jangho Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, South Korea.
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Whitehead TJ, Avila COC, Sundararaghavan HG. Combining growth factor releasing microspheres within aligned nanofibers enhances neurite outgrowth. J Biomed Mater Res A 2017; 106:17-25. [DOI: 10.1002/jbm.a.36204] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/16/2017] [Accepted: 08/22/2017] [Indexed: 01/28/2023]
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35
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Peña B, Bosi S, Aguado BA, Borin D, Farnsworth NL, Dobrinskikh E, Rowland TJ, Martinelli V, Jeong M, Taylor MRG, Long CS, Shandas R, Sbaizero O, Prato M, Anseth KS, Park D, Mestroni L. Injectable Carbon Nanotube-Functionalized Reverse Thermal Gel Promotes Cardiomyocytes Survival and Maturation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31645-31656. [PMID: 28895403 PMCID: PMC5672802 DOI: 10.1021/acsami.7b11438] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The ability of the adult heart to regenerate cardiomyocytes (CMs) lost after injury is limited, generating interest in developing efficient cell-based transplantation therapies. Rigid carbon nanotubes (CNTs) scaffolds have been used to improve CMs viability, proliferation, and maturation, but they require undesirable invasive surgeries for implantation. To overcome this limitation, we developed an injectable reverse thermal gel (RTG) functionalized with CNTs (RTG-CNT) that transitions from a solution at room temperature to a three-dimensional (3D) gel-based matrix shortly after reaching body temperature. Here we show experimental evidence that this 3D RTG-CNT system supports long-term CMs survival, promotes CMs alignment and proliferation, and improves CMs function when compared with traditional two-dimensional gelatin controls and 3D plain RTG system without CNTs. Therefore, our injectable RTG-CNT system could potentially be used as a minimally invasive tool for cardiac tissue engineering efforts.
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Affiliation(s)
- Brisa Peña
- Cardiovascular Institute, University of Colorado Denver Anschutz Medical Campus, School of Medicine, Division of Cardiology, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - Susanna Bosi
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste 34127, Italy
| | - Brian A. Aguado
- Department of Chemical and Biological Engineering and Howard Hughes Medical Institute and the BioFrontiers Institute, University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80309, United States
| | - Daniele Borin
- Department of Engineering and Architecture, University of Trieste, Trieste 34127, Italy
| | - Nikki L. Farnsworth
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Evgenia Dobrinskikh
- Department of Medicine, University of Colorado Denver Anschutz Medical Campus, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - Teisha J. Rowland
- Cardiovascular Institute, University of Colorado Denver Anschutz Medical Campus, School of Medicine, Division of Cardiology, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - Valentina Martinelli
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy
| | - Mark Jeong
- Cardiovascular Institute, University of Colorado Denver Anschutz Medical Campus, School of Medicine, Division of Cardiology, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - Matthew R. G. Taylor
- Cardiovascular Institute, University of Colorado Denver Anschutz Medical Campus, School of Medicine, Division of Cardiology, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - Carlin S. Long
- Cardiovascular Institute, University of Colorado Denver Anschutz Medical Campus, School of Medicine, Division of Cardiology, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
| | - Robin Shandas
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Orfeo Sbaizero
- Department of Engineering and Architecture, University of Trieste, Trieste 34127, Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste 34127, Italy
- Carbon Nanobiotechnology Laboratory, CIC biomaGUNE, Paseo de Miramón 182 20009, Donostia-San Sebastián 20009, Spain
- Basque Foundation for Science, Ikerbasque, Bilbao 48013, Spain
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering and Howard Hughes Medical Institute and the BioFrontiers Institute, University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80309, United States
| | - Daewon Park
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, Colorado 80045, United States
| | - Luisa Mestroni
- Cardiovascular Institute, University of Colorado Denver Anschutz Medical Campus, School of Medicine, Division of Cardiology, 12700 E. 19th Avenue, Bldg. P15, Aurora, Colorado 80045, United States
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Pyatin VF, Kolsanov AV, Shirolapov IV. Recent medical techniques for peripheral nerve repair: Clinico-physiological advantages of artificial nerve guidance conduits. ADVANCES IN GERONTOLOGY 2017. [DOI: 10.1134/s2079057017020126] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Han S, Chang T, Zhao H, Du H, Liu S, Wu B, Qin S. Cultivating Fluorescent Flowers with Highly Luminescent Carbon Dots Fabricated by a Double Passivation Method. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E176. [PMID: 28686178 PMCID: PMC5535242 DOI: 10.3390/nano7070176] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 06/23/2017] [Accepted: 06/28/2017] [Indexed: 01/10/2023]
Abstract
In this work, we present the fabrication of highly luminescent carbon dots (CDs) by a double passivation method with the assistance of Ca(OH)₂. In the reaction process, Ca2+ protects the active functional groups from overconsumption during dehydration and carbonization, and the electron-withdrawing groups on the CD surface are converted to electron-donating groups by the hydroxyl ions. As a result, the fluorescence quantum yield of the CDs was found to increase with increasing Ca(OH)₂ content in the reaction process. A blue-shift optical spectrum of the CDs was also found with increasing Ca(OH)₂ content, which could be attributed to the increasing of the energy gaps for the CDs. The highly photoluminescent CDs obtained (quantum yield: 86%) were used to cultivate fluorescent carnations by a water culture method, while the results of fluorescence microscopy analysis indicated that the CDs had entered the plant tissue structure.
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Affiliation(s)
- Shuai Han
- College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, China.
- Key Laboratory of Resource Exploration Research of Hebei Province, Hebei University of Engineering, Handan 056038, China.
| | - Tao Chang
- College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, China.
| | - Haiping Zhao
- Key Laboratory of Resource Exploration Research of Hebei Province, Hebei University of Engineering, Handan 056038, China.
| | - Huanhuan Du
- College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, China.
| | - Shan Liu
- College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, China.
| | - Baoshuang Wu
- College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, China.
| | - Shenjun Qin
- Key Laboratory of Resource Exploration Research of Hebei Province, Hebei University of Engineering, Handan 056038, China.
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Marwan AI, Williams SM, Bardill JR, Gralla J, Abdul-Aziz NM, Park D. Reverse Thermal Gel for In Utero Coverage of Spina Bifida Defects: An Innovative Bioengineering Alternative to Open Fetal Repair. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600473] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/17/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Ahmed I. Marwan
- Laboratory for Fetal and Regenerative Biology; Department of Surgery; University of Colorado; School of Medicine; Anschutz Medical Campus; 12700 E 19th Ave., RC2-P15-6013 Aurora 80045 USA
| | - Sarah M. Williams
- Laboratory for Fetal and Regenerative Biology; Department of Surgery; University of Colorado; School of Medicine; Anschutz Medical Campus; 12700 E 19th Ave., RC2-P15-6013 Aurora 80045 USA
| | - James R. Bardill
- Department of Bioengineering; University of Colorado; School of Medicine; Anschutz Medical Campus; 12700 E 19th Ave., RC2-P15-6013 Aurora 80045 USA
| | - Jane Gralla
- Department of Pediatrics; University of Colorado; School of Medicine; Anschutz Medical Campus; 12700 E 19th Ave., RC2-P15-6013 Aurora 80045 USA
| | - Noraishah M. Abdul-Aziz
- Laboratory for Fetal and Regenerative Biology; Department of Surgery; University of Colorado; School of Medicine; Anschutz Medical Campus; 12700 E 19th Ave., RC2-P15-6013 Aurora 80045 USA
| | - Daewon Park
- Department of Bioengineering; University of Colorado; School of Medicine; Anschutz Medical Campus; 12700 E 19th Ave., RC2-P15-6013 Aurora 80045 USA
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39
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Lackington WA, Ryan AJ, O'Brien FJ. Advances in Nerve Guidance Conduit-Based Therapeutics for Peripheral Nerve Repair. ACS Biomater Sci Eng 2017; 3:1221-1235. [PMID: 33440511 DOI: 10.1021/acsbiomaterials.6b00500] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Peripheral nerve injuries have high incidence rates, limited treatment options and poor clinical outcomes, rendering a significant socioeconomic burden. For effective peripheral nerve repair, the gap or site of injury must be structurally bridged to promote correct reinnervation and functional regeneration. However, effective repair becomes progressively more difficult with larger gaps. Autologous nerve grafting remains the best clinical option for the repair of large gaps (20-80 mm) despite being associated with numerous limitations including permanent donor site morbidity, a lack of available tissue and the formation of neuromas. To meet the clinical demand of large gap repair and overcome these limitations, tissue engineering has led to the development of nerve guidance conduit-based therapeutics. This review focuses on the advances of nerve guidance conduit-based therapeutics in terms of their structural properties including biomimetic composition, permeability, architecture, and surface modifications. Associated biochemical properties, pertaining to the incorporation of cells and neurotrophic factors, are also reviewed. After reviewing the progress in the field, we conclude by presenting an outlook on their clinical translatability and the next generation of therapeutics.
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Affiliation(s)
- William A Lackington
- Tissue Engineering Research Group (TERG), Department of Anatomy, Royal College of Surgeons in Ireland, Dublin 2, Ireland.,Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons in Ireland, Dublin 2, Ireland.,Trinity Centre for Bioengineering (TCBE), Trinity College Dublin, Dublin 2, Ireland
| | - Alan J Ryan
- Tissue Engineering Research Group (TERG), Department of Anatomy, Royal College of Surgeons in Ireland, Dublin 2, Ireland.,Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons in Ireland, Dublin 2, Ireland.,Trinity Centre for Bioengineering (TCBE), Trinity College Dublin, Dublin 2, Ireland
| | - Fergal J O'Brien
- Tissue Engineering Research Group (TERG), Department of Anatomy, Royal College of Surgeons in Ireland, Dublin 2, Ireland.,Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons in Ireland, Dublin 2, Ireland.,Trinity Centre for Bioengineering (TCBE), Trinity College Dublin, Dublin 2, Ireland
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40
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Wu T, Li D, Wang Y, Sun B, Li D, Morsi Y, El-Hamshary H, Al-Deyab SS, Mo X. Laminin-coated nerve guidance conduits based on poly(l-lactide-co-glycolide) fibers and yarns for promoting Schwann cells’ proliferation and migration. J Mater Chem B 2017; 5:3186-3194. [DOI: 10.1039/c6tb03330j] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A laminin-coated and yarn-encapsulated PLGA nerve guidance conduit for Schwann cells’ proliferation and migration.
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Affiliation(s)
- Tong Wu
- State Key Lab for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Dandan Li
- College of Material Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Yuanfei Wang
- State Key Laboratory of Bioreactor Engineering
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Binbin Sun
- State Key Lab for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Dawei Li
- College of Textiles
- Donghua University
- Shanghai 201620
- China
| | - Yosry Morsi
- Faculty of Engineering and Industrial Sciences
- Swinburne University of Technology
- Hawthorn
- Australia
| | - Hany El-Hamshary
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Salem S. Al-Deyab
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Xiumei Mo
- State Key Lab for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
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41
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Koss K, Unsworth L. Neural tissue engineering: Bioresponsive nanoscaffolds using engineered self-assembling peptides. Acta Biomater 2016; 44:2-15. [PMID: 27544809 DOI: 10.1016/j.actbio.2016.08.026] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 07/26/2016] [Accepted: 08/16/2016] [Indexed: 12/25/2022]
Abstract
UNLABELLED Rescuing or repairing neural tissues is of utmost importance to the patient's quality of life after an injury. To remedy this, many novel biomaterials are being developed that are, ideally, non-invasive and directly facilitate neural wound healing. As such, this review surveys the recent approaches and applications of self-assembling peptides and peptide amphiphiles, for building multi-faceted nanoscaffolds for direct application to neural injury. Specifically, methods enabling cellular interactions with the nanoscaffold and controlling the release of bioactive molecules from the nanoscaffold for the express purpose of directing endogenous cells in damaged or diseased neural tissues is presented. An extensive overview of recently derived self-assembling peptide-based materials and their use as neural nanoscaffolds is presented. In addition, an overview of potential bioactive peptides and ligands that could be used to direct behaviour of endogenous cells are categorized with their biological effects. Finally, a number of neurotrophic and anti-inflammatory drugs are described and discussed. Smaller therapeutic molecules are emphasized, as they are thought to be able to have less potential effect on the overall peptide self-assembly mechanism. Options for potential nanoscaffolds and drug delivery systems are suggested. STATEMENT OF SIGNIFICANCE Self-assembling nanoscaffolds have many inherent properties making them amenable to tissue engineering applications: ease of synthesis, ease of customization with bioactive moieties, and amenable for in situ nanoscaffold formation. The combination of the existing knowledge on bioactive motifs for neural engineering and the self-assembling propensity of peptides is discussed in specific reference to neural tissue engineering.
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42
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Lee DJ, Fontaine A, Meng X, Park D. Biomimetic Nerve Guidance Conduit Containing Intraluminal Microchannels with Aligned Nanofibers Markedly Facilitates in Nerve Regeneration. ACS Biomater Sci Eng 2016; 2:1403-1410. [DOI: 10.1021/acsbiomaterials.6b00344] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David J. Lee
- Department
of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 East 19th Avenue, Aurora, Colorado 80045, United States
| | - Arjun Fontaine
- Department
of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 East 19th Avenue, Aurora, Colorado 80045, United States
| | - Xianzhong Meng
- Department
of Surgery, University of Colorado Denver Anschutz Medical Campus, 12700 East 19th Avenue, Aurora, Colorado 80045, United States
| | - Daewon Park
- Department
of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 East 19th Avenue, Aurora, Colorado 80045, United States
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43
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Using Stem Cells to Grow Artificial Tissue for Peripheral Nerve Repair. Stem Cells Int 2016; 2016:7502178. [PMID: 27212954 PMCID: PMC4861803 DOI: 10.1155/2016/7502178] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 02/17/2016] [Accepted: 03/02/2016] [Indexed: 12/17/2022] Open
Abstract
Peripheral nerve injury continues to pose a clinical hurdle despite its frequency and advances in treatment. Unlike the central nervous system, neurons of the peripheral nervous system have a greater ability to regenerate. However, due to a number of confounding factors, this is often both incomplete and inadequate. The lack of supportive Schwann cells or their inability to maintain a regenerative phenotype is a major factor. Advances in nervous system tissue engineering technology have led to efforts to build Schwann cell scaffolds to overcome this and enhance the regenerative capacity of neurons following injury. Stem cells that can differentiate along a neural lineage represent an essential resource and starting material for this process. In this review, we discuss the different stem cell types that are showing promise for nervous system tissue engineering in the context of peripheral nerve injury. We also discuss some of the biological, practical, ethical, and commercial considerations in using these different stem cells for future clinical application.
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44
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Wang Y, Ji Y, Zhao Y, Kong Y, Gao M, Feng Q, Wu Y, Yang Y. Effects of surface functional groups on proliferation and biofunction of Schwann cells. J Biomater Appl 2016; 30:1494-504. [DOI: 10.1177/0885328216628785] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Scaffolds in tissue engineering should be rationally designed to become an adhesion substrate friendly to cells. Schwann cells play an important role in nerve regeneration and repair. Previous studies have suggested that surface chemical groups have effect on many types of cells. However, there have hitherto been few reports on Schwann cells. In this study, we investigated cell adhesion, survival, proliferation, and neurotrophic actions of Schwann cells cultured on glass coverslips modified with different chemical groups, including methyl, carboxyl, amino, hydroxyl, mercapto, and sulfonic groups. Schwann cells on amino and carboxyl surfaces had higher attachment rate, presenting good morphology, high proliferation, and strong neurotrophic functions, while on methyl surfaces, few cells can survive, cells shrunk into round shape, exhibiting poor proliferation and weak neurotrophic functions. Growth of cells on other groups was between methyl and amino, carboxyl, and had little difference among them. Our data indicated that chemical groups can regulate behavior of Schwann cells, indicating a way to design new scaffolds for peripheral nerve regeneration.
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Affiliation(s)
- Yaling Wang
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, P. R. China
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, P. R. China
| | - Yawei Ji
- Department of cardiology, Affiliated Hospital of Nantong University, Nantong, P.R. China
| | - Yahong Zhao
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, P. R. China
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
| | - Yan Kong
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
| | - Ming Gao
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
| | - Qilin Feng
- School of Medical, Nantong University, Nantong, P. R. China
| | - Yue Wu
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
| | - Yumin Yang
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, P. R. China
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
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45
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Valente TAM, Silva DM, Gomes PS, Fernandes MH, Santos JD, Sencadas V. Effect of Sterilization Methods on Electrospun Poly(lactic acid) (PLA) Fiber Alignment for Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:3241-3249. [PMID: 26756809 DOI: 10.1021/acsami.5b10869] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Medically approved sterility methods should be a major concern when developing a polymeric scaffold, mainly when commercialization is envisaged. In the present work, poly(lactic acid) (PLA) fiber membranes were processed by electrospinning with random and aligned fiber alignment and sterilized under UV, ethylene oxide (EO), and γ-radiation, the most common ones for clinical applications. It was observed that UV light and γ-radiation do not influence fiber morphology or alignment, while electrospun samples treated with EO lead to fiber orientation loss and morphology changing from cylindrical fibers to ribbon-like structures, accompanied to an increase of polymer crystallinity up to 28%. UV light and γ-radiation sterilization methods showed to be less harmful to polymer morphology, without significant changes in polymer thermal and mechanical properties, but a slight increase of polymer wettability was detected, especially for the samples treated with UV radiation. In vitro results indicate that both UV and γ-radiation treatments of PLA membranes allow the adhesion and proliferation of MG 63 osteoblastic cells in a close interaction with the fiber meshes and with a growth pattern highly sensitive to the underlying random or aligned fiber orientation. These results are suggestive of the potential of both γ-radiation sterilized PLA membranes for clinical applications in regenerative medicine, especially those where customized membrane morphology and fiber alignment is an important issue.
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Affiliation(s)
- T A M Valente
- Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto , Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - D M Silva
- Biosckin, Molecular, and Cell Therapies, SA. Parque Tecnológico da Maia-Tecmaia , Rua Eng.° Frederico Ulrich, 2650, 4470-605 Maia, Portugal
| | - P S Gomes
- Faculdade de Medicina Dentária, Universidade do Porto , Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal
| | - M H Fernandes
- Faculdade de Medicina Dentária, Universidade do Porto , Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal
| | - J D Santos
- Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto , Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- CEMUC, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto , Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - V Sencadas
- School of Mechanical, Materials, and Mechatronics Engineering, University of Wollongong , Wollongong, NSW 2522, Australia
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