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Han R, Luo L, Wei C, Qiao Y, Xie J, Pan X, Xing J. Stiffness-tunable biomaterials provide a good extracellular matrix environment for axon growth and regeneration. Neural Regen Res 2025; 20:1364-1376. [PMID: 39075897 DOI: 10.4103/nrr.nrr-d-23-01874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 03/16/2024] [Indexed: 07/31/2024] Open
Abstract
Neuronal growth, extension, branching, and formation of neural networks are markedly influenced by the extracellular matrix-a complex network composed of proteins and carbohydrates secreted by cells. In addition to providing physical support for cells, the extracellular matrix also conveys critical mechanical stiffness cues. During the development of the nervous system, extracellular matrix stiffness plays a central role in guiding neuronal growth, particularly in the context of axonal extension, which is crucial for the formation of neural networks. In neural tissue engineering, manipulation of biomaterial stiffness is a promising strategy to provide a permissive environment for the repair and regeneration of injured nervous tissue. Recent research has fine-tuned synthetic biomaterials to fabricate scaffolds that closely replicate the stiffness profiles observed in the nervous system. In this review, we highlight the molecular mechanisms by which extracellular matrix stiffness regulates axonal growth and regeneration. We highlight the progress made in the development of stiffness-tunable biomaterials to emulate in vivo extracellular matrix environments, with an emphasis on their application in neural repair and regeneration, along with a discussion of the current limitations and future prospects. The exploration and optimization of the stiffness-tunable biomaterials has the potential to markedly advance the development of neural tissue engineering.
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Affiliation(s)
- Ronglin Han
- Department of Pathophysiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Lanxin Luo
- Department of Pathophysiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Caiyan Wei
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Yaru Qiao
- Department of Pathophysiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Jiming Xie
- Department of Pathophysiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Xianchao Pan
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Juan Xing
- Department of Pathophysiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan Province, China
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2
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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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3
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Sun J, Cao W, Pan S, He L, Ji D, Zheng N, Sun X, Wang R, Niu Y. Porous Organic Materials in Tissue Engineering: Recent Advances and Applications for Severed Facial Nerve Injury Repair. Molecules 2024; 29:566. [PMID: 38338311 PMCID: PMC10856494 DOI: 10.3390/molecules29030566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 02/12/2024] Open
Abstract
The prevalence of facial nerve injury is substantial, and the restoration of its structure and function remains a significant challenge. Autologous nerve transplantation is a common treatment for severed facial nerve injury; however, it has great limitations. Therefore, there is an urgent need for clinical repair methods that can rival it. Tissue engineering nerve conduits are usually composed of scaffolds, cells and neurofactors. Tissue engineering is regarded as a promising method for facial nerve regeneration. Among different factors, the porous nerve conduit made of organic materials, which has high porosity and biocompatibility, plays an indispensable role. This review introduces facial nerve injury and the existing treatment methods and discusses the necessity of the application of porous nerve conduit. We focus on the application of porous organic polymer materials from production technology and material classification and summarize the necessity and research progress of these in repairing severed facial nerve injury, which is relatively rare in the existing articles. This review provides a theoretical basis for further research into and clinical interventions on facial nerve injury and has certain guiding significance for the development of new materials.
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Affiliation(s)
- Jingxuan Sun
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Wenxin Cao
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China; (W.C.); (D.J.)
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China
| | - Shuang Pan
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Lina He
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Dongchao Ji
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China; (W.C.); (D.J.)
| | - Nannan Zheng
- Key Laboratory of Micro-Systems and Micro-Structures Manufacturing (Ministry of Education), School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China;
| | - Xiangyu Sun
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Ranxu Wang
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Yumei Niu
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
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4
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Dos Santos FV, Siqueira RL, de Morais Ramos L, Yoshioka SA, Branciforti MC, Correa DS. Silk fibroin-derived electrospun materials for biomedical applications: A review. Int J Biol Macromol 2024; 254:127641. [PMID: 37913875 DOI: 10.1016/j.ijbiomac.2023.127641] [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: 07/27/2023] [Revised: 10/14/2023] [Accepted: 10/22/2023] [Indexed: 11/03/2023]
Abstract
Electrospinning is a versatile technique for fabricating polymeric fibers with diameters ranging from micro- to nanoscale, exhibiting multiple morphologies and arrangements. By combining silk fibroin (SF) with synthetic and/or natural polymers, electrospun materials with outstanding biological, chemical, electrical, physical, mechanical, and optical properties can be achieved, fulfilling the evolving biomedical demands. This review highlights the remarkable versatility of SF-derived electrospun materials, specifically focusing on their application in tissue regeneration (including cartilage, cornea, nerves, blood vessels, bones, and skin), disease treatment (such as cancer and diabetes), and the development of controlled drug delivery systems. Additionally, we explore the potential future trends in utilizing these nanofibrous materials for creating intelligent biomaterials, incorporating biosensors and wearable sensors for monitoring human health, and also discuss the bottlenecks for its widespread use. This comprehensive overview illuminates the significant impact and exciting prospects of SF-derived electrospun materials in advancing biomedical research and applications.
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Affiliation(s)
- Francisco Vieira Dos Santos
- Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970 São Carlos, SP, Brazil; Materials Engineering Department, São Carlos School of Engineering, University of São Paulo, 13563-120 São Carlos, SP, Brazil
| | - Renato Luiz Siqueira
- Materials Engineering Department, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil
| | - Lucas de Morais Ramos
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos, SP, Brazil
| | - Sérgio Akinobu Yoshioka
- Laboratory of Biochemistry and Biomaterials, São Carlos Institute of Chemistry, University of São Paulo, 13560-970 São Carlos, SP, Brazil
| | - Márcia Cristina Branciforti
- Materials Engineering Department, São Carlos School of Engineering, University of São Paulo, 13563-120 São Carlos, SP, Brazil
| | - Daniel Souza Correa
- Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970 São Carlos, SP, Brazil; Materials Engineering Department, São Carlos School of Engineering, University of São Paulo, 13563-120 São Carlos, SP, Brazil.
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5
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Huang X, An Y, Yuan S, Chen C, Shan H, Zhang M. Silk fibroin carriers with sustained release capacity for treating neurological diseases. Front Pharmacol 2023; 14:1117542. [PMID: 37214477 PMCID: PMC10196044 DOI: 10.3389/fphar.2023.1117542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/21/2023] [Indexed: 05/24/2023] Open
Abstract
Neurological diseases such as traumatic brain injury, cerebral ischemia, Parkinson's, and Alzheimer's disease usually occur in the central and peripheral nervous system and result in nervous dysfunction, such as cognitive impairment and motor dysfunction. Long-term clinical intervention is necessary for neurological diseases where neural stem cell transplantation has made substantial progress. However, many risks remain for cell therapy, such as puncture bleeding, postoperative infection, low transplantation success rate, and tumor formation. Sustained drug delivery, which aims to maintain the desired steady-state drug concentrations in plasma or local injection sites, is considered as a feasible option to help overcome side effects and improve the therapeutic efficiency of drugs on neurological diseases. Natural polymers such as silk fibroin have excellent biocompatibility, which can be prepared for various end-use material formats, such as microsphere, gel, coating/film, scaffold/conduit, microneedle, and enables the dynamic release of loaded drugs to achieve a desired therapeutic response. Sustained-release drug delivery systems are based on the mechanism of diffusion and degradation by altering the structures of silk fibroin and drugs, factors, and cells, which can induce nerve recovery and restore the function of the nervous system in a slow and persistent manner. Based on these desirable properties of silk fibroin as a carrier with sustained-release capacity, this paper discusses the role of various forms of silk fibroin-based drug delivery materials in treating neurological diseases in recent years.
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Affiliation(s)
- Xinqi Huang
- Institute of Forensic Sciences, Suzhou Medical College, Soochow University, Suzhou, China
| | - Yumei An
- Institute of Forensic Sciences, Suzhou Medical College, Soochow University, Suzhou, China
| | - Shengye Yuan
- Institute of Forensic Sciences, Suzhou Medical College, Soochow University, Suzhou, China
| | - Chen Chen
- Department of Orthopedics, Dongtai People’s Hospital, Dongtai, China
| | - Haiyan Shan
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Mingyang Zhang
- Institute of Forensic Sciences, Suzhou Medical College, Soochow University, Suzhou, China
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6
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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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7
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Xiong W, Wang S, Wei Z, Cai Y, Li B, Lin F, Xia D. Knowledge Domain and Hotspots Predict Concerning Electroactive Biomaterials Applied in Tissue Engineering: A Bibliometric and Visualized Analysis From 2011 to 2021. Front Bioeng Biotechnol 2022; 10:904629. [PMID: 35677303 PMCID: PMC9168279 DOI: 10.3389/fbioe.2022.904629] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/09/2022] [Indexed: 01/11/2023] Open
Abstract
Objective: Electroactive biomaterials used in tissue engineering have been extensively studied. Electroactive biomaterials have unique potential advantages in cell culture and tissue regeneration, which have attracted the attention of medical researchers worldwide. Therefore, it is important to understand the global scientific output regarding this topic. An analysis of publications on electroactive biomaterials used in tissue engineering over the past decade was performed, and the results were summarised to track the current hotspots and highlight future directions.Methods: Globally relevant publications on electroactive biomaterials used in tissue engineering between 2011 and 2021 were extracted from the Web of Science database. The VOSviewer software and CiteSpace were employed to visualise and predict trends in research on the topic.Results: A total of 3,374 publications were screened. China contributed the largest number of publications (995) and citations (1581.95, actual value ×0.05). The United States achieved the highest H-index (440 actual values ×0.05). The journal Materials Science & Engineering C-materials for Biological Applications (IF = 7.328) published the most studies on this topic (150). The Chinese Academy of Science had the largest number of publications (107) among all institutions. The publication titled Nanotechnological strategies for engineering complex tissues by Dir, T of the United States had the highest citation frequency (985 times). Regarding the function of electroactive materials, the keyword “sensors” emerged in recent years. Regarding the characterisation of electroactive materials, the keyword “water contact angle” appeared lately. Regarding electroactive materials in nerve and cardiac tissue engineering, the keywords “silk fibroin and conductive hydrogel” appeared recently. Regarding the application of electroactive materials in bone tissue engineering, the keyword “angiogenesis” emerged in recent years. The current research trend indicates that although new functional materials are constantly being developed, attention should also be paid to their application and transformation in tissue engineering.Conclusion: The number of publications on electroactive biomaterials used in tissue engineering is expected to increase in the future. Topics like sensors, water contact angle, angiogenesis, silk fibroin, and conductive hydrogels are expected to be the focuses of research in the future; attention should also be paid to the application and transformation of electroactive materials, particularly bone tissue engineering. Moreover, further development of the field requires joint efforts from all disciplines.
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Affiliation(s)
- Wentao Xiong
- Department of Orthopedic, Hainan Hospital of Chinese PLA General Hospital, Sanya, China
| | - Sheng Wang
- Department of Emergency, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Ziheng Wei
- Department of Orthopedics, Shanghai General Hospital Affiliated to Shanghai Jiaotong University, Shanghai, China
| | - Yibo Cai
- Department of Orthopedic, Hainan Hospital of Chinese PLA General Hospital, Sanya, China
| | - Bo Li
- Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, China
- *Correspondence: Bo Li, ; Feng Lin, ; Demeng Xia,
| | - Feng Lin
- Department of Orthopedic, Hainan Hospital of Chinese PLA General Hospital, Sanya, China
- *Correspondence: Bo Li, ; Feng Lin, ; Demeng Xia,
| | - Demeng Xia
- Luodian Clinical Drug Research Center, Shanghai Baoshan Luodian Hospital, Shanghai University, Shanghai, China
- *Correspondence: Bo Li, ; Feng Lin, ; Demeng Xia,
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8
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Mikhailova MM, Sydoruk KV, Davydova LI, Yastremsky EV, Chvalun SN, Debabov VG, Bogush VG, Panteleyev AA. Nonwoven spidroin materials as scaffolds for ex vivo cultivation of aortic fragments and dorsal root ganglia. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1685-1703. [PMID: 35499451 DOI: 10.1080/09205063.2022.2073426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Recombinant spidroins (RS; the analogues of silk proteins of spider's web) have multiple properties beneficial for bioengineering, including their suitability for electrospinning and thus, for production of materials with oriented fibers. This makes RS-based matrices potentially effective in stimulating regeneration of peripheral nerves. The restoration of injured nerves also depends on prompt regrowth of blood vessels. Therefore, prospective scaffold materials for neuro-regenerative therapy should positively affect both the nerves and the blood vessels. Currently, the experimental models suitable for culturing and quantitative assessment of the vascular and neuronal cells on the same material are lacking. Here, we assessed the suitability of electrospun RS-based matrices for cultivation of the mouse aorta and dorsal root ganglia (DRG) explants. We also quantified the effects of matrix topography upon both types of tissues. The RS-based materials have effectively supported aortic explants survival and sprouting. The cumulative length of endothelial sprouts on rS1/9-coated inserts was significantly higher as compared to type I collagen coatings, suggesting stimulatory effects on angiogenesis in vitro. In contrast to matrices with random fibers, on matrices with parallel fibers the migration of both smooth muscle and endothelial cells was highly oriented. Furthermore, alignment of RS fibers effectively directs the growth of axons and the migration of Schwann cells from DRGs. Thus, the electrospun RS matrices are highly suitable to culture both, the DRGs and aortic explants and to study the effects of matrix topography on cell migration. This model has a high potential for further endeavor into interactions of nerve and vascular cells and tissues.
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Affiliation(s)
| | - Konstantin V Sydoruk
- National Research Centre «Kurchatov Institute», Moscow, Russia.,National Research Centre «Kurchatov Institute» - GosNIIGenetika, Moscow, Russia
| | - Lubov I Davydova
- National Research Centre «Kurchatov Institute», Moscow, Russia.,National Research Centre «Kurchatov Institute» - GosNIIGenetika, Moscow, Russia
| | - Evgeniy V Yastremsky
- National Research Centre «Kurchatov Institute», Moscow, Russia.,Shubnikov Institute of Crystallography of FSRC "Crystallography and Photonics" RAS, Moscow, Russia
| | | | - Vladimir G Debabov
- National Research Centre «Kurchatov Institute», Moscow, Russia.,National Research Centre «Kurchatov Institute» - GosNIIGenetika, Moscow, Russia
| | - Vladimir G Bogush
- National Research Centre «Kurchatov Institute», Moscow, Russia.,National Research Centre «Kurchatov Institute» - GosNIIGenetika, Moscow, Russia
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Yan Y, Yao R, Zhao J, Chen K, Duan L, Wang T, Zhang S, Guan J, Zheng Z, Wang X, Liu Z, Li Y, Li G. Implantable nerve guidance conduits: Material combinations, multi-functional strategies and advanced engineering innovations. Bioact Mater 2022; 11:57-76. [PMID: 34938913 PMCID: PMC8665266 DOI: 10.1016/j.bioactmat.2021.09.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 01/15/2023] Open
Abstract
Nerve guidance conduits (NGCs) have attracted much attention due to their great necessity and applicability in clinical use for the peripheral nerve repair. Great efforts in recent years have been devoted to the development of high-performance NGCs using various materials and strategies. The present review provides a comprehensive overview of progress in the material innovation, structural design, advanced engineering technologies and multi functionalization of state-of-the-art nerve guidance conduits NGCs. Abundant advanced engineering technologies including extrusion-based system, laser-based system, and novel textile forming techniques in terms of weaving, knitting, braiding, and electrospinning techniques were also analyzed in detail. Findings arising from this review indicate that the structural mimetic NGCs combined with natural and synthetic materials using advanced manufacturing technologies can make full use of their complementary advantages, acquiring better biomechanical properties, chemical stability and biocompatibility. Finally, the existing challenges and future opportunities of NGCs were put forward aiming for further research and applications of NGCs.
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Affiliation(s)
- Yixin Yan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Ruotong Yao
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Jingyuan Zhao
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Kaili Chen
- Department of Materials, Imperial College London, SW7 2AZ, UK
| | - Lirong Duan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Tian Wang
- Wilson College of Textiles, North Carolina State University, Raleigh, 27695, USA
| | - Shujun Zhang
- Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Jinping Guan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Zekun Liu
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Yi Li
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Gang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
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High-throughput fabrication of silk fibroin/hydroxypropyl methylcellulose (SF/HPMC) nanofibrous scaffolds for skin tissue engineering. Int J Biol Macromol 2021; 183:1210-1221. [PMID: 33984383 DOI: 10.1016/j.ijbiomac.2021.05.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 05/01/2021] [Accepted: 05/04/2021] [Indexed: 01/18/2023]
Abstract
Silk fibroin (SF) is a natural macromolecule material with good biocompatibility, which can be used to prepare a variety of biological materials. In this study, hydroxypropyl methylcellulose (HPMC) was applied to improve the properties of SF nanofibrous scaffolds (NFS) for skin tissue engineering applications. SF/HPMC NFS with varying weight ratios of SF: HPMC were prepared in batches by a modified free surface electrospinning. The effects of the varying weight ratio of SF: HPMC on the morphology, property and yield of SF/HPMC NFS were investigated. The results revealed that with the increase of HPMC contents, the hydrophilicity of SF/HPMC NFS would be improved, but the yield of that would decrease. Considering its effects on the morphology, property and yield of SF/HPMC NFS, the optimal weight ratio of SF: HPMC was 7:1. And SF/HPMC NFS with the weight ratio of 7:1 (SF/HPMC-7:1 NFS) had good mechanical property, hydrophilicity, porosity, swelling property and water vapor transmission rate (WVTR). In addition, the viability test results of human umbilical vein endothelial cells demonstrated that SF/HPMC-7:1 NFS maintained excellent biocompatibility for cell adhesion and proliferation.
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11
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Yin J, Xu L. Batch preparation of electrospun polycaprolactone/chitosan/aloe vera blended nanofiber membranes for novel wound dressing. Int J Biol Macromol 2020; 160:352-363. [PMID: 32470578 DOI: 10.1016/j.ijbiomac.2020.05.211] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/28/2020] [Accepted: 05/23/2020] [Indexed: 12/23/2022]
Abstract
At present, more and more attention has been paid to the development of active wound dressings. Chitosan, a kind of carbohydrate polymer with good biocompatibility, is widely used in the field of wound dressings. In this study, a slopeing free surface electrospinning (SFSE) device was presented to prepare large quantities of polycaprolactone/chitosan/aloe vera (PCL/CS/AV) nanofiber membranes (NFMs) for antibacterial wound dressing. And the morphologies of PCL/CS/AV NFMs with varying weight ratios of PCL:CS:AV were studied using SEM, and the optimal weight ratio of 5:3:2 was determined for better wound dressings. Then the structure, wetting property and yield of the PCL/CS/AV NFMs with the optimal weight ratio were investigated, and the effects of the addition of AV on the antibacterial performance and the biocompatibility of NFMs was studied. In addition, the preparation mechanism of SFSE was researched by simulating the electric field distribution using Maxwell 3D due to the important role of the electric field in the SFSE process. The simulation analyses of electric fields agreed with the experimental data. The results illustrated SFSE could prepare high quality PCL/CS/AV NFMs in batches, and its yield of PCL/CS/AV NFMs was 10 times more than the single-needle ES, and the fabricated NFMs showed excellent antibacterial performance and biocompatibility, which made them suitable for wound dressings.
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Affiliation(s)
- Jing Yin
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Lan Xu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China.
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12
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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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13
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Pawar K, Welzel G, Haynl C, Schuster S, Scheibel T. Recombinant Spider Silk and Collagen-Based Nerve Guidance Conduits Support Neuronal Cell Differentiation and Functionality in Vitro. ACS APPLIED BIO MATERIALS 2019; 2:4872-4880. [DOI: 10.1021/acsabm.9b00628] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kiran Pawar
- Department for Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Strasse 1, 95447 Bayreuth, Germany
| | | | - Christian Haynl
- Department for Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Strasse 1, 95447 Bayreuth, Germany
| | | | - Thomas Scheibel
- Department for Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Strasse 1, 95447 Bayreuth, Germany
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14
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Alessandrino A, Fregnan F, Biagiotti M, Muratori L, Bassani GA, Ronchi G, Vincoli V, Pierimarchi P, Geuna S, Freddi G. SilkBridge™: a novel biomimetic and biocompatible silk-based nerve conduit. Biomater Sci 2019; 7:4112-4130. [PMID: 31359013 DOI: 10.1039/c9bm00783k] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silk fibroin (Bombyx mori) was used to manufacture a nerve conduit (SilkBridge™) characterized by a novel 3D architecture. The wall of the conduit consists of two electrospun layers (inner and outer) and one textile layer (middle), perfectly integrated at the structural and functional level. The manufacturing technology conferred high compression strength on the device, thus meeting clinical requirements for physiological and pathological compressive stresses. In vitro cell interaction studies were performed through direct contact assays with SilkBridge™ using the glial RT4-D6P2T cells, a schwannoma cell line, and a mouse motor neuron NSC-34 cell line. The results revealed that the material is capable of sustaining cell proliferation, that the glial RT4-D6P2T cells increased their density and organized themselves in a glial-like morphology, and that NSC-34 motor neurons exhibited a greater neuritic length with respect to the control substrate. In vivo pilot assays were performed on adult female Wistar rats. A 10 mm long gap in the median nerve was repaired with 12 mm SilkBridge™. At two weeks post-operation several cell types colonized the lumen. Cells and blood vessels were also visible between the different layers of the conduit wall. Moreover, the presence of regenerated myelinated fibers with a thin myelin sheath at the proximal level was observed. Taken together, all these results demonstrated that SilkBridge™ has an optimized balance of biomechanical and biological properties, being able to sustain a perfect cellular colonization of the conduit and the progressive growth of the regenerating nerve fibers.
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Affiliation(s)
| | - F Fregnan
- Department of Clinical and Biological Sciences, University of Torino, 10124 Torino, Italy and Neuroscience Institute Cavalieri Ottolenghi, University of Torino, 10124 Torino, Italy
| | - M Biagiotti
- Silk Biomaterials Srl, 22074 Lomazzo (Co), Italy.
| | - L Muratori
- Department of Clinical and Biological Sciences, University of Torino, 10124 Torino, Italy and Neuroscience Institute Cavalieri Ottolenghi, University of Torino, 10124 Torino, Italy
| | - G A Bassani
- Silk Biomaterials Srl, 22074 Lomazzo (Co), Italy.
| | - G Ronchi
- Department of Clinical and Biological Sciences, University of Torino, 10124 Torino, Italy and Neuroscience Institute Cavalieri Ottolenghi, University of Torino, 10124 Torino, Italy
| | - V Vincoli
- Silk Biomaterials Srl, 22074 Lomazzo (Co), Italy.
| | - P Pierimarchi
- Institute of Translational Pharmacology, National Research Council, 00083 Rome, Italy
| | - S Geuna
- Department of Clinical and Biological Sciences, University of Torino, 10124 Torino, Italy and Neuroscience Institute Cavalieri Ottolenghi, University of Torino, 10124 Torino, Italy
| | - G Freddi
- Silk Biomaterials Srl, 22074 Lomazzo (Co), Italy.
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15
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Baklaushev VP, Bogush VG, Kalsin VA, Sovetnikov NN, Samoilova EM, Revkova VA, Sidoruk KV, Konoplyannikov MA, Timashev PS, Kotova SL, Yushkov KB, Averyanov AV, Troitskiy AV, Ahlfors JE. Tissue Engineered Neural Constructs Composed of Neural Precursor Cells, Recombinant Spidroin and PRP for Neural Tissue Regeneration. Sci Rep 2019; 9:3161. [PMID: 30816182 PMCID: PMC6395623 DOI: 10.1038/s41598-019-39341-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 01/17/2019] [Indexed: 02/07/2023] Open
Abstract
We have designed a novel two-component matrix (SPRPix) for the encapsulation of directly reprogrammed human neural precursor cells (drNPC). The matrix is comprised of 1) a solid anisotropic complex scaffold prepared by electrospinning a mixture of recombinant analogues of the spider dragline silk proteins - spidroin 1 (rS1/9) and spidroin 2 (rS2/12) - and polycaprolactone (PCL) (rSS-PCL), and 2) a "liquid matrix" based on platelet-rich plasma (PRP). The combination of PRP and spidroin promoted drNPC proliferation with the formation of neural tissue organoids and dramatically activated neurogenesis. Differentiation of drNPCs generated large numbers of βIII-tubulin and MAP2 positive neurons as well as some GFAP-positive astrocytes, which likely had a neuronal supporting function. Interestingly the SPRPix microfibrils appeared to provide strong guidance cues as the differentiating neurons oriented their processes parallel to them. Implantation of the SPRPix matrix containing human drNPC into the brain and spinal cord of two healthy Rhesus macaque monkeys showed good biocompatibility: no astroglial and microglial reaction was present around the implanted construct. Importantly, the human drNPCs survived for the 3 month study period and differentiated into MAP2 positive neurons. Tissue engineered constructs based on SPRPix exhibits important attributes that warrant further examination in spinal cord injury treatment.
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Affiliation(s)
- V P Baklaushev
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia.
| | - V G Bogush
- Scientific Center "Kurchatov Institute" - Research Institute for Genetics and Selection of Industrial Microorganisms", 1-st Dorozhniy pr., 1, 117545, Moscow, Russia
| | - V A Kalsin
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia
| | - N N Sovetnikov
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia
| | - E M Samoilova
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia
| | - V A Revkova
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia
| | - K V Sidoruk
- Scientific Center "Kurchatov Institute" - Research Institute for Genetics and Selection of Industrial Microorganisms", 1-st Dorozhniy pr., 1, 117545, Moscow, Russia
| | - M A Konoplyannikov
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia
- Institute for Regenerative Medicine, I. M. Sechenov First Moscow State Medical University, 8 Trubetskaya St., 119991, Moscow, Russia
| | - P S Timashev
- Federal Research Center "Crystallography and Photonics", Institute of Photonic Technology of the Russian Academy of Sciences, 2 Pionerskaya St., Troitsk, 142190, Moscow, Russia
- Institute for Regenerative Medicine, I. M. Sechenov First Moscow State Medical University, 8 Trubetskaya St., 119991, Moscow, Russia
- N.N.Semenov Institute of Chemical Physics, 4 Kosygin St., 119991, Moscow, Russia
| | - S L Kotova
- Institute for Regenerative Medicine, I. M. Sechenov First Moscow State Medical University, 8 Trubetskaya St., 119991, Moscow, Russia
- N.N.Semenov Institute of Chemical Physics, 4 Kosygin St., 119991, Moscow, Russia
| | - K B Yushkov
- National University of Science and Technology "MISIS", 4 Leninsky Prospekt, 119049, Moscow, Russia
| | - A V Averyanov
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia
| | - A V Troitskiy
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia 28 Orekhovy Blvd., 115682, Moscow, Russia
| | - J-E Ahlfors
- New World Laboratories Inc., Laval, Quebec, Canada.
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16
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Yen CM, Shen CC, Yang YC, Liu BS, Lee HT, Sheu ML, Tsai MH, Cheng WY. Novel electrospun poly(ε-caprolactone)/type I collagen nanofiber conduits for repair of peripheral nerve injury. Neural Regen Res 2019; 14:1617-1625. [PMID: 31089062 PMCID: PMC6557087 DOI: 10.4103/1673-5374.255997] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Recent studies have shown the potential of artificially synthesized conduits in the repair of peripheral nerve injury. Natural biopolymers have received much attention because of their biocompatibility. To investigate the effects of novel electrospun absorbable poly(ε-caprolactone)/type I collagen nanofiber conduits (biopolymer nanofiber conduits) on the repair of peripheral nerve injury, we bridged 10-mm-long sciatic nerve defects with electrospun absorbable biopolymer nanofiber conduits, poly(ε-caprolactone) or silicone conduits in Sprague-Dawley rats. Rat neurologica1 function was weekly evaluated using sciatic function index within 8 weeks after repair. Eight weeks after repair, sciatic nerve myelin sheaths and axon morphology were observed by osmium tetroxide staining, hematoxylin-eosin staining, and transmission electron microscopy. S-100 (Schwann cell marker) and CD4 (inflammatory marker) immunoreactivities in sciatic nerve were detected by immunohistochemistry. In rats subjected to repair with electrospun absorbable biopolymer nanofiber conduits, no serious inflammatory reactions were observed in rat hind limbs, the morphology of myelin sheaths in the injured sciatic nerve was close to normal. CD4 immunoreactivity was obviously weaker in rats subjected to repair with electrospun absorbable biopolymer nanofiber conduits than in those subjected to repair with poly(ε-caprolactone) or silicone. Rats subjected to repair with electrospun absorbable biopolymer nanofiber conduits tended to have greater sciatic nerve function recovery than those receiving poly(ε-caprolactone) or silicone repair. These results suggest that electrospun absorbable poly(ε-caprolactone)/type I collagen nanofiber conduits have the potential of repairing sciatic nerve defects and exhibit good biocompatibility. All experimental procedures were approved by Institutional Animal Care and Use Committee of Taichung Veteran General Hospital, Taiwan, China (La-1031218) on October 2, 2014.
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Affiliation(s)
- Chun-Ming Yen
- Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital; Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan, China
| | - Chiung-Chyi Shen
- Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital; Department of Physical Therapy, Hungkuang University; Basic Medical Education Center, Central Taiwan University of Science and Technology, Taichung, Taiwan, China
| | - Yi-Chin Yang
- Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan, China
| | - Bai-Shuan Liu
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan, China
| | - Hsu-Tung Lee
- Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan, China
| | - Meei-Ling Sheu
- Institute of Biomedical Sciences, National Chung Hsing University; Department of Medical Research, Taichung Veterans General Hospital; Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan, China
| | - Meng-Hsiun Tsai
- Department of Management Information System, National Chung Hsing University, Taichung, Taiwan, China
| | - Wen-Yu Cheng
- Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital; Department of Physical Therapy, Hungkuang University, Taichung, Taiwan, China
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17
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Magaz A, Faroni A, Gough JE, Reid AJ, Li X, Blaker JJ. Bioactive Silk-Based Nerve Guidance Conduits for Augmenting Peripheral Nerve Repair. Adv Healthc Mater 2018; 7:e1800308. [PMID: 30260575 DOI: 10.1002/adhm.201800308] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 05/22/2018] [Indexed: 02/03/2023]
Abstract
Repair of peripheral nerve injuries depends upon complex biology stemming from the manifold and challenging injury-healing processes of the peripheral nervous system. While surgical treatment options are available, they tend to be characterized by poor clinical outcomes for the injured patients. This is particularly apparent in the clinical management of a nerve gap whereby nerve autograft remains the best clinical option despite numerous limitations; in addition, effective repair becomes progressively more difficult with larger gaps. Nerve conduit strategies based on tissue engineering approaches and the use of silk as scaffolding material have attracted much attention in recent years to overcome these limitations and meet the clinical demand of large gap nerve repair. This review examines the scientific advances made with silk-based conduits for peripheral nerve repair. The focus is on enhancing bioactivity of the conduits in terms of physical guidance cues, inner wall and lumen modification, and imbuing novel conductive functionalities.
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Affiliation(s)
- Adrián Magaz
- Bio‐Active Materials GroupSchool of MaterialsMSS TowerThe University of Manchester Manchester M13 9PL UK
- Institute of Materials Research and Engineering (IMRE)Agency for Science Technology and Research (A*STAR) 2 Fusionopolis, Way, Innovis #08‐03 Singapore 138634 Singapore
| | - Alessandro Faroni
- Blond McIndoe LaboratoriesDivision of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of Biology, Medicine and HealthThe University of ManchesterManchester Academic Health Science Centre Manchester M13 9PL UK
| | - Julie E. Gough
- School of MaterialsThe University of Manchester Manchester M13 9PL UK
| | - Adam J. Reid
- Blond McIndoe LaboratoriesDivision of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of Biology, Medicine and HealthThe University of ManchesterManchester Academic Health Science Centre Manchester M13 9PL UK
- Department of Plastic Surgery and BurnsWythenshawe HospitalManchester University NHS Foundation TrustManchester Academic Health Science Centre Manchester M23 9LT UK
| | - Xu Li
- Institute of Materials Research and Engineering (IMRE)Agency for Science Technology and Research (A*STAR) 2 Fusionopolis, Way, Innovis #08‐03 Singapore 138634 Singapore
| | - Jonny J. Blaker
- Bio‐Active Materials GroupSchool of MaterialsMSS TowerThe University of Manchester Manchester M13 9PL UK
- School of MaterialsThe University of Manchester Manchester M13 9PL UK
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18
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Nune M, Manchineella S, T G, K S N. Melanin incorporated electroactive and antioxidant silk fibroin nanofibrous scaffolds for nerve tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:17-25. [PMID: 30423699 DOI: 10.1016/j.msec.2018.09.014] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 08/27/2018] [Accepted: 09/05/2018] [Indexed: 02/03/2023]
Abstract
Nerve restoration and repair in the central nervous system is complicated and requires several factors to be considered while designing the scaffolds like being bioactive as well as having neuroinductive, neuroconductive and antioxidant properties. Aligned electrospun nanofibers provide necessary guidance and topographical cues required for directing the axonal and neurite outgrowth during regeneration. Conduction of nerve impulses is a mandatory feature of a typical nerve. The neuro-conductive property can be imparted by blending the biodegradable, bioactive polymers with conductive polymers. This will provide additional features, i.e., electrical cues to the already existing topographical and bioactive cues in order to make it a more multifaceted neuroregenerative approach. Hence in the present study, we used a combination of silk fibroin and melanin for the fabrication of random and aligned electrospun nanofibrous composite scaffolds. We performed the physico-chemical characterization and also assessed their antioxidant properties. We also evaluated their neurogenic potential using human neuroblastoma cells (SH-SY5Y) for their cellular viability, proliferation, adhesion and differentiation levels. Designed nanofibrous scaffolds had adequate physical properties suitable as neural substrates to promote neuronal growth and regeneration. They stimulated the neuroblastoma cell attachment and viability indicating their biocompatible nature. Silk/melanin composite scaffolds have specifically exhibited high antioxidant nature proven by the radical scavenging activity. Additionally, the melanin incorporated aligned silk fibroin scaffolds promoted the cell differentiation into neurons and orientation along their axis. Our results confirmed the potential of melanin incorporated aligned silk fibroin scaffolds as the promising candidates for effective nerve regeneration and recovery.
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Affiliation(s)
- Manasa Nune
- Chemistry and Physics of Materials Unit School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Shivaprasad Manchineella
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Govindaraju T
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Narayan K S
- School of Advanced Materials and Department of Neurosciences, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India.
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19
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Carvalho CR, Costa JB, da Silva Morais A, López-Cebral R, Silva-Correia J, Reis RL, Oliveira JM. Tunable Enzymatically Cross-Linked Silk Fibroin Tubular Conduits for Guided Tissue Regeneration. Adv Healthc Mater 2018; 7:e1800186. [PMID: 29999601 DOI: 10.1002/adhm.201800186] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/03/2018] [Indexed: 01/11/2023]
Abstract
Hollow tubular conduits (TCs) with tunable architecture and biological properties are in great need for modulating cell functions and drug delivery in guided tissue regeneration. Here, a new methodology to produce enzymatically cross-linked silk fibroin TCs is described, which takes advantage of the tyrosine groups present in silk structure that are known to allow the formation of a covalently cross-linked hydrogel. Three different processing methods are used as a final step to modulate the properties of the silk-based TCs. This approach allows to virtually adjust any characteristic of the final TCs. The final microstructure ranges from a nonporous to a highly porous network, allowing the TCs to be selectively porous to 4 kDa molecules, but not to human skin fibroblasts. Mechanical properties are dependent both on the processing method and thickness of the TCs. Bioactivity is observed after 30 days of immersion in simulated body fluid only for the TCs submitted to a drying processing method (50 °C). The in vivo study performed in mice demonstrates the good biocompatibility of the TCs. The enzymatically cross-linked silk fibroin TCs are versatile and have adjustable characteristics that can be exploited in a variety of biomedical applications, particularly in guidance of peripheral nerve regeneration.
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Affiliation(s)
- Cristiana R. Carvalho
- 3B's Research Group; I3Bs-Research Institute on Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Parque de Ciência e Tecnologia; Zona Industrial da Gandra; 4805-017 Barco Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga Guimarães Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho, Avepark; 4805-017 Barco Guimarães Portugal
| | - João B. Costa
- 3B's Research Group; I3Bs-Research Institute on Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Parque de Ciência e Tecnologia; Zona Industrial da Gandra; 4805-017 Barco Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga Guimarães Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho, Avepark; 4805-017 Barco Guimarães Portugal
| | - Alain da Silva Morais
- 3B's Research Group; I3Bs-Research Institute on Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Parque de Ciência e Tecnologia; Zona Industrial da Gandra; 4805-017 Barco Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga Guimarães Portugal
| | - Rita López-Cebral
- 3B's Research Group; I3Bs-Research Institute on Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Parque de Ciência e Tecnologia; Zona Industrial da Gandra; 4805-017 Barco Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga Guimarães Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho, Avepark; 4805-017 Barco Guimarães Portugal
| | - Joana Silva-Correia
- 3B's Research Group; I3Bs-Research Institute on Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Parque de Ciência e Tecnologia; Zona Industrial da Gandra; 4805-017 Barco Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group; I3Bs-Research Institute on Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Parque de Ciência e Tecnologia; Zona Industrial da Gandra; 4805-017 Barco Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga Guimarães Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho, Avepark; 4805-017 Barco Guimarães Portugal
| | - J. Miguel Oliveira
- 3B's Research Group; I3Bs-Research Institute on Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Parque de Ciência e Tecnologia; Zona Industrial da Gandra; 4805-017 Barco Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga Guimarães Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho, Avepark; 4805-017 Barco Guimarães Portugal
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20
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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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21
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Di Summa PG, Schiraldi L, Cherubino M, Oranges CM, Kalbermatten DF, Raffoul W, Madduri S. Adipose Derived Stem Cells Reduce Fibrosis and Promote Nerve Regeneration in Rats. Anat Rec (Hoboken) 2018; 301:1714-1721. [PMID: 29710394 PMCID: PMC6667902 DOI: 10.1002/ar.23841] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/31/2017] [Accepted: 01/27/2018] [Indexed: 01/17/2023]
Abstract
Peripheral nerve regeneration is critical and challenging in the adult humans. High level of collagen infiltration (i.e., scar tissue), in the niche of injury, impedes axonal regeneration and path finding. Unfortunately, studies focusing on the modulation of scar tissue in the nerves are scarce. To address part of this problem, we have evaluated the differentiated adipose derived stem cells (dASCs) for their antifibrotic and regenerative effects in a 10 mm nerve gap model in rats. Three different animal groups (N = 5) were treated with fibrin nerve conduits (empty), or seeded with dASCs (F + dASCs) and autograft, respectively. Histological analysis of regenerated nerves, at 12 weeks postoperatively, reveled the high levels of collagen infiltration (i.e., 21.5% ± 6.1% and 24.1% ± 2.9%) in the middle and distal segment of empty conduit groups in comparison with stem cells treated (16.6% ± 2.1% and 12.1% ± 2.9%) and autograft (15.0% ± 1.7% and 12.8% ± 1.0%) animals. Thus, the dASCs treatment resulted in significant reduction of fibrotic tissue formation. Consequently, enhanced axonal regeneration and remyelination was found in the animals treated with dASCs. Interestingly, these effects of dASCs appeared to be equivalent to that of autograft treatment. Thus, the dASCs hold great potential for preventing the scar tissue formation and for promoting nerve regeneration in the adult organisms. Future experiments will focus on the validation of these findings in a critical nerve injury model. Anat Rec, 301:1714–1721, 2018. © 2018 The Authors. The Anatomical Record published by Wiley Periodicals, Inc. on behalf of American Association of Anatomists
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Affiliation(s)
- Pietro G Di Summa
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Luigi Schiraldi
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Mario Cherubino
- Department of Biotechnology, University of Insubria, Varese, Italy
| | - Carlo M Oranges
- Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Basel, Basel 4031, Switzerland
| | - Daniel F Kalbermatten
- Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Basel, Basel 4031, Switzerland
| | - Wassim Raffoul
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Srinivas Madduri
- Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Basel, Basel 4031, Switzerland.,Department of Biomedicine, University of Basel, Basel 4031, Switzerland.,Department of Biomedical Engineering, University of Basel, Allschwil 4123, Switzerland
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22
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Cacao E, Parihar VK, Limoli CL, Cucinotta FA. Stochastic Modeling of Radiation-induced Dendritic Damage on in silico Mouse Hippocampal Neurons. Sci Rep 2018; 8:5494. [PMID: 29615729 PMCID: PMC5882641 DOI: 10.1038/s41598-018-23855-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 03/21/2018] [Indexed: 12/20/2022] Open
Abstract
Cognitive dysfunction associated with radiotherapy for cancer treatment has been correlated to several factors, one of which is changes to the dendritic morphology of neuronal cells. Alterations in dendritic geometry and branching patterns are often accompanied by deficits that impact learning and memory. The purpose of this study is to develop a novel predictive model of neuronal dendritic damages caused by exposure to low linear energy transfer (LET) radiation, such as X-rays, γ-rays and high-energy protons. We established in silico representations of mouse hippocampal dentate granule cell layer (GCL) and CA1 pyramidal neurons, which are frequently examined in radiation-induced cognitive decrements. The in silico representations are used in a stochastic model that describes time dependent dendritic damage induced by exposure to low LET radiation. Changes in morphometric parameters, such as total dendritic length, number of branch points and branch number, including the Sholl analysis for single neurons are described by the model. Our model based predictions for different patterns of morphological changes based on energy deposition in dendritic segments (EDDS) will serve as a useful basis to compare specific patterns of morphological alterations caused by EDDS mechanisms.
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Affiliation(s)
- Eliedonna Cacao
- Department of Health Physics and Diagnostic Sciences, University of Nevada, Las Vegas, NV, United States of America
| | - Vipan K Parihar
- Department of Radiation Oncology, University of California, Irvine, CA, United States of America
| | - Charles L Limoli
- Department of Radiation Oncology, University of California, Irvine, CA, United States of America
| | - Francis A Cucinotta
- Department of Health Physics and Diagnostic Sciences, University of Nevada, Las Vegas, NV, United States of America.
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23
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Pestana FM, Domingues RCC, Oliveira JT, Durço DFPA, Goulart CO, Mendonça HR, Dos Santos ACR, de Campos NT, da Silva BT, Pereira CC, Borges CP, Martinez AMB. Comparison of morphological and functional outcomes of mouse sciatic nerve repair with three biodegradable polymer conduits containing poly(lactic acid). Neural Regen Res 2018; 13:1811-1819. [PMID: 30136697 PMCID: PMC6128044 DOI: 10.4103/1673-5374.238712] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Poly(lactic acid) (PLA)-containing nerve guidance conduits (NGCs) are currently being investigated for nerve repair as an alternative to autograft, which leads to permanent functional impairment in the territory innervated by the removed nerve. Combination of polymers modifies the physical properties of the conduits, altering their nerve-guidance properties. Conduits made from PLA-only or combined with other polymers have been used successfully for nerve repair, but their efficiency has not been compared. We compared the morphological and functional outcomes of peripheral nerve repair by using NGCs made of poly(lactic acid) and combined or not with polycaprolactone (PLA/PCL) or polyvinylpyrrolidone (PLA/PVP). To assess the functional recovery, we employed a mechanical hyperalgesia analysis, sciatic functional index (SFI), and electroneuromyography. The mechanical hyperalgesia analysis showed that the PLA group improved more rapidly than the PLA/PVP and PLA/PCL groups; similarly, in the electroneuromyography assay, the PLA group exhibited higher amplitude than the PLA/PCL and PLA/PVP groups. However, the SFI improvement rates did not differ among the groups. Morphologically, the PLA group showed more vascularization, while the nerve fiber regeneration did not differ among the groups. In conclusion, the PLA-only conduits were superior to the other NGCs tested for nerve repair.
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Affiliation(s)
- Fernanda Marques Pestana
- Pós Graduação em Ciências Morfológicas, Instituto de Ciências Biomédicas-UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | | | - Júlia Teixeira Oliveira
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Daniela F P A Durço
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Camila Oliveira Goulart
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Henrique Rocha Mendonça
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ; Polo Universitário de Macaé, Laboratório Integrado de Produtos Bioativos e Biociências, Macaé, UFRJ, Brazil
| | - Anne Caroline Rodrigues Dos Santos
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Natália Tavares de Campos
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Beatriz Theodoro da Silva
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | | | | | - Ana Maria Blanco Martinez
- Pós Graduação em Ciências Morfológicas, Instituto de Ciências Biomédicas-UFRJ; Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
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24
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Cao Y. Tumorigenesis as a process of gradual loss of original cell identity and gain of properties of neural precursor/progenitor cells. Cell Biosci 2017; 7:61. [PMID: 29177029 PMCID: PMC5693707 DOI: 10.1186/s13578-017-0188-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 10/27/2017] [Indexed: 02/07/2023] Open
Abstract
Cancer is a complex disease without a unified explanation for its cause so far. Our recent work demonstrates that cancer cells share similar regulatory networks and characteristics with embryonic neural cells. Based on the study, I will address the relationship between tumor and neural cells in more details. I collected the evidence from various aspects of cancer development in many other studies, and integrated the information from studies on cancer cell properties, cell fate specification during embryonic development and evolution. Synthesis of the information strongly supports that cancer cells share much more similarities with neural progenitor/stem cells than with mesenchymal-type cells and that tumorigenesis represents a process of gradual loss of cell or lineage identity and gain of characteristics of neural cells. I also discuss cancer EMT, a concept having been under intense debate, and possibly the true meaning of EMT in cancer initiation and development. This synthesis provides fresh insights into a unified explanation for and a previously unrecognized nature of tumorigenesis, which might not be revealed by studies on individual molecular events. The review will also present some brief suggestions for cancer research based on the proposed model of tumorigenesis.
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Affiliation(s)
- Ying Cao
- Model Animal Research Center and MOE Key Laboratory of Model Animals for Disease Study, Nanjing University, 12 Xuefu Road, Pukou High-Tech Zone, Nanjing, 210061 China
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25
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López-Cebral R, Silva-Correia J, Reis RL, Silva TH, Oliveira JM. Peripheral Nerve Injury: Current Challenges, Conventional Treatment Approaches, and New Trends in Biomaterials-Based Regenerative Strategies. ACS Biomater Sci Eng 2017; 3:3098-3122. [DOI: 10.1021/acsbiomaterials.7b00655] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- R. López-Cebral
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - J. Silva-Correia
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - R. L. Reis
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - T. H. Silva
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - J. M. Oliveira
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
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26
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Xue C, Zhu H, Tan D, Ren H, Gu X, Zhao Y, Zhang P, Sun Z, Yang Y, Gu J, Gu Y, Gu X. Electrospun silk fibroin-based neural scaffold for bridging a long sciatic nerve gap in dogs. J Tissue Eng Regen Med 2017; 12:e1143-e1153. [PMID: 28485084 DOI: 10.1002/term.2449] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 01/22/2017] [Accepted: 05/04/2017] [Indexed: 12/20/2022]
Abstract
Silk fibroin (SF)-derived silkworms represent a type of highly biocompatible biomaterial for tissue engineering. We have previously investigated biocompatibility of SF with neural cells isolated from the central nervous system or peripheral nerve system in vitro, and also developed a SF-based nerve graft conduit or tissue-engineered nerve grafts by introducing bone marrow mesenchymal stem cells, as support cells, into SF-based scaffold and evaluated the outcomes of peripheral nerve repair in a rat model. As an extension of the previous study, the electrospun technique was performed here to fabricate SF-based neural scaffold inserted with silk fibres for bridging a 30-mm-long sciatic nerve gap in dogs. Assessments including functional, histological and morphometrical analyses were applied 12 months after surgery. All the results indicated that the SF-based neural scaffold group achieved satisfactory regenerative outcomes, which were close to those achieved by autologous nerve grafts as the golden-standard for peripheral nerve repair. Overall, our results raise a potential possibility for the translation of SF-based electrospun neural scaffolds as an alternative to nerve autografts into the clinic.
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Affiliation(s)
- Chengbin Xue
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, China.,Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Hui Zhu
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, China.,Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, JS, PR China
| | - Dehua Tan
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Hechun Ren
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Xiaokun Gu
- Department of Hand Surgery, Affiliated Hospital of Nantong University, Nantong, JS, PR China
| | - Yahong Zhao
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Ping Zhang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Zhichao Sun
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Yumin Yang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Jianhui Gu
- Department of Hand Surgery, Affiliated Hospital of Nantong University, Nantong, JS, PR China
| | - Yun Gu
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
| | - Xiaosong Gu
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, China.,Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, JS, PR China
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27
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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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28
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Abstract
Reconstructive urologists are constantly facing diverse and complex pathologies that require structural and functional restoration of urinary organs. There is always a demand for a biocompatible material to repair or substitute the urinary tract instead of using patient's autologous tissues with its associated morbidity. Biomimetic approaches are tissue-engineering tactics aiming to tailor the material physical and biological properties to behave physiologically similar to the urinary system. This review highlights the different strategies to mimic urinary tissues including modifications in structure, surface chemistry, and cellular response of a range of biological and synthetic materials. The article also outlines the measures to minimize infectious complications, which might lead to graft failure. Relevant experimental and preclinical studies are discussed, as well as promising biomimetic approaches such as three-dimensional bioprinting.
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Affiliation(s)
- Moustafa M Elsawy
- Division of Surgery and Interventional Science, Royal Free Hospital, NHS Trust, University College London (UCL)
- Division of Reconstructive Urology, University College London Hospitals (uclh), London, UK
- Urology Department, School of Medicine, Alexandria University, Alexandria, Egypt
| | - Achala de Mel
- Division of Surgery and Interventional Science, Royal Free Hospital, NHS Trust, University College London (UCL)
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29
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Zhou JF, Wang YG, Cheng L, Wu Z, Sun XD, Peng J. Preparation of polypyrrole-embedded electrospun poly(lactic acid) nanofibrous scaffolds for nerve tissue engineering. Neural Regen Res 2016; 11:1644-1652. [PMID: 27904497 PMCID: PMC5116845 DOI: 10.4103/1673-5374.193245] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2016] [Indexed: 12/17/2022] Open
Abstract
Polypyrrole (PPy) is a biocompatible polymer with good conductivity. Studies combining PPy with electrospinning have been reported; however, the associated decrease in PPy conductivity has not yet been resolved. We embedded PPy into poly(lactic acid) (PLA) nanofibers via electrospinning and fabricated a PLA/PPy nanofibrous scaffold containing 15% PPy with sustained conductivity and aligned topography. There was good biocompatibility between the scaffold and human umbilical cord mesenchymal stem cells as well as Schwann cells. Additionally, the direction of cell elongation on the scaffold was parallel to the direction of fibers. Our findings suggest that the aligned PLA/PPy nanofibrous scaffold is a promising biomaterial for peripheral nerve regeneration.
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Affiliation(s)
- Jun-feng Zhou
- Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Yi-guo Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
- School of Medicine, Nankai University, Tianjin, China
| | - Liang Cheng
- Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Zhao Wu
- Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Xiao-dan Sun
- Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Jiang Peng
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
- The Neural Regeneration Co-innovation Center of Jiangsu Province, Nantong, Jiangsu Province, China
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30
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Chen SL, Chen ZG, Dai HL, Ding JX, Guo JS, Han N, Jiang BG, # HJ, Li J, Li SP, Li WJ, Liu J, Liu Y, Ma JX, Peng J, Shen YD, Sun GW, Tang PF, Wang GH, Wang XH, Xiang LB, Xie RG, Xu JG, Yu B, Zhang LC, Zhang PX, Zhou SL. Repair, protection and regeneration of peripheral nerve injury. Neural Regen Res 2015; 10:1777-98. [PMID: 26807113 PMCID: PMC4705790 DOI: 10.4103/1673-5374.170301] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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