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Li L, Chu Z, Li S, Zheng T, Wei S, Zhao Y, Liu P, Lu Q. BDNF-loaded chitosan-based mimetic mussel polymer conduits for repair of peripheral nerve injury. Front Cell Dev Biol 2024; 12:1431558. [PMID: 39011392 PMCID: PMC11246889 DOI: 10.3389/fcell.2024.1431558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Accepted: 06/11/2024] [Indexed: 07/17/2024] Open
Abstract
Care for patients with peripheral nerve injury is multifaceted, as traditional methods are not devoid of limitations. Although the utilization of neural conduits shows promise as a therapeutic modality for peripheral nerve injury, its efficacy as a standalone intervention is limited. Hence, there is a pressing need to investigate a composite multifunctional neural conduit as an alternative treatment for peripheral nerve injury. In this study, a BDNF-loaded chitosan-based mimetic mussel polymer conduit was prepared. Its unique adhesion characteristics allow it to be suture-free, improve the microenvironment of the injury site, and have good antibacterial properties. Researchers utilized a rat sciatic nerve injury model to evaluate the progression of nerve regeneration at the 12-week postoperative stage. The findings of this study indicate that the chitosan-based mimetic mussel polymer conduit loaded with BDNF had a substantial positive effect on myelination and axon outgrowth. The observed impact demonstrated a favorable outcome in terms of sciatic nerve regeneration and subsequent functional restoration in rats with a 15-mm gap. Hence, this approach is promising for nerve tissue regeneration during peripheral nerve injury.
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Affiliation(s)
- Lei Li
- Department of Adult Joint Reconstructive Surgery, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China
| | - Ziyue Chu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Shihao Li
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Tong Zheng
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Shusheng Wei
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yunpeng Zhao
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Peilai Liu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Qunshan Lu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
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Wang Z, Li S, Wu Z, Kang Y, Xie S, Cai Z, Shan X, Li Q. Pulsed electromagnetic field-assisted reduced graphene oxide composite 3D printed nerve scaffold promotes sciatic nerve regeneration in rats. Biofabrication 2024; 16:035013. [PMID: 38604162 DOI: 10.1088/1758-5090/ad3d8a] [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: 10/22/2023] [Accepted: 04/11/2024] [Indexed: 04/13/2024]
Abstract
Peripheral nerve injuries can lead to sensory or motor deficits that have a serious impact on a patient's mental health and quality of life. Nevertheless, it remains a major clinical challenge to develop functional nerve conduits as an alternative to autologous grafts. We applied reduced graphene oxide (rGO) as a bioactive conductive material to impart electrophysiological properties to a 3D printed scaffold and the application of a pulsed magnetic field to excite the formation of microcurrents and induce nerve regeneration.In vitrostudies showed that the nerve scaffold and the pulsed magnetic field made no effect on cell survival, increased S-100βprotein expression, enhanced cell adhesion, and increased the expression level of nerve regeneration-related mRNAs.In vivoexperiments suggested that the protocol was effective in promoting nerve regeneration, resulting in functional recovery of sciatic nerves in rats, when they were damaged close to that of the autologous nerve graft, and increased expression of S-100β, NF200, and GAP43. These results indicate that rGO composite nerve scaffolds combined with pulsed magnetic field stimulation have great potential for peripheral nerve rehabilitation.
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Affiliation(s)
- Zichao Wang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
- National Center for Stomatology, Beijing 100081, People's Republic of China
- National Clinical Research Center for Oral Diseases, Beijing 100081, People's Republic of China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Digital Stomatology and NHC Key Laboratory of Digital Stomatology and NMPA Key Laboratory for Dental Materials, Beijing 100081, People's Republic of China
| | - Shijun Li
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
- National Center for Stomatology, Beijing 100081, People's Republic of China
- National Clinical Research Center for Oral Diseases, Beijing 100081, People's Republic of China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Digital Stomatology and NHC Key Laboratory of Digital Stomatology and NMPA Key Laboratory for Dental Materials, Beijing 100081, People's Republic of China
| | - Zongxi Wu
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510030, People's Republic of China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510030, People's Republic of China
| | - Yifan Kang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
- National Center for Stomatology, Beijing 100081, People's Republic of China
- National Clinical Research Center for Oral Diseases, Beijing 100081, People's Republic of China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Digital Stomatology and NHC Key Laboratory of Digital Stomatology and NMPA Key Laboratory for Dental Materials, Beijing 100081, People's Republic of China
| | - Shang Xie
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
- National Center for Stomatology, Beijing 100081, People's Republic of China
- National Clinical Research Center for Oral Diseases, Beijing 100081, People's Republic of China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Digital Stomatology and NHC Key Laboratory of Digital Stomatology and NMPA Key Laboratory for Dental Materials, Beijing 100081, People's Republic of China
| | - Zhigang Cai
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
- National Center for Stomatology, Beijing 100081, People's Republic of China
- National Clinical Research Center for Oral Diseases, Beijing 100081, People's Republic of China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Digital Stomatology and NHC Key Laboratory of Digital Stomatology and NMPA Key Laboratory for Dental Materials, Beijing 100081, People's Republic of China
| | - Xiaofeng Shan
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
- National Center for Stomatology, Beijing 100081, People's Republic of China
- National Clinical Research Center for Oral Diseases, Beijing 100081, People's Republic of China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Digital Stomatology and NHC Key Laboratory of Digital Stomatology and NMPA Key Laboratory for Dental Materials, Beijing 100081, People's Republic of China
| | - Qing Li
- National Center for Stomatology, Beijing 100081, People's Republic of China
- National Clinical Research Center for Oral Diseases, Beijing 100081, People's Republic of China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, People's Republic of China
- Center of Digital Dentistry, Second Clinical Division, Peking University School and Hospital of Stomatology and National Center of Stomatology, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Digital Stomatology and NHC Key Laboratory of Digital Stomatology and NMPA Key Laboratory for Dental Materials, Beijing 100081, People's Republic of China
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Ma Y, Zhang R, Mao X, Li X, Li T, Liang F, He J, Wen L, Wang W, Li X, Zhang Y, Yu H, Lu B, Yu T, Ao Q. Preparation of PLCL/ECM nerve conduits by electrostatic spinning technique and evaluation in vitroand in vivo. J Neural Eng 2024; 21:026028. [PMID: 38572924 DOI: 10.1088/1741-2552/ad3851] [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: 09/23/2023] [Accepted: 03/27/2024] [Indexed: 04/05/2024]
Abstract
Objective. Artificial nerve scaffolds composed of polymers have attracted great attention as an alternative for autologous nerve grafts recently. Due to their poor bioactivity, satisfactory nerve repair could not be achieved. To solve this problem, we introduced extracellular matrix (ECM) to optimize the materials.Approach.In this study, the ECM extracted from porcine nerves was mixed with Poly(L-Lactide-co-ϵ-caprolactone) (PLCL), and the innovative PLCL/ECM nerve repair conduits were prepared by electrostatic spinning technology. The novel conduits were characterized by scanning electron microscopy (SEM), tensile properties, and suture retention strength test for micromorphology and mechanical strength. The biosafety and biocompatibility of PLCL/ECM nerve conduits were evaluated by cytotoxicity assay with Mouse fibroblast cells and cell adhesion assay with RSC 96 cells, and the effects of PLCL/ECM nerve conduits on the gene expression in Schwann cells was analyzed by real-time polymerase chain reaction (RT-PCR). Moreover, a 10 mm rat (Male Wistar rat) sciatic defect was bridged with a PLCL/ECM nerve conduit, and nerve regeneration was evaluated by walking track, mid-shank circumference, electrophysiology, and histomorphology analyses.Main results.The results showed that PLCL/ECM conduits have similar microstructure and mechanical strength compared with PLCL conduits. The cytotoxicity assay demonstrates better biosafety and biocompatibility of PLCL/ECM nerve conduits. And the cell adhesion assay further verifies that the addition of ECM is more beneficial to cell adhesion and proliferation. RT-PCR showed that the PLCL/ECM nerve conduit was more favorable to the gene expression of functional proteins of Schwann cells. Thein vivoresults indicated that PLCL/ECM nerve conduits possess excellent biocompatibility and exhibit a superior capacity to promote peripheral nerve repair.Significance.The addition of ECM significantly improved the biocompatibility and bioactivity of PLCL, while the PLCL/ECM nerve conduit gained the appropriate mechanical strength from PLCL, which has great potential for clinical repair of peripheral nerve injuries.
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Affiliation(s)
- Yizhan Ma
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China
| | - Runze Zhang
- Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Xiaoyan Mao
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
- China (Nanchang) Intellectual Property Protection Center, Nanchang, People's Republic of China
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China
| | - Ting Li
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Fang Liang
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
| | - Jing He
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
| | - Lili Wen
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
| | - Weizuo Wang
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
| | - Xiao Li
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
| | - Yanhui Zhang
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
| | - Honghao Yu
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
| | - Binhan Lu
- School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan, People's Republic of China
| | - Tianhao Yu
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, People's Republic of China
| | - Qiang Ao
- Department of Tissue Engineering, School of Intelligent Medicine, China Medical University, Shenyang, People's Republic of China
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & Institute of Regulatory Science for Medical Device & National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, People's Republic of China
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Lee HY, Moon SH, Kang D, Choi E, Yang GH, Kim KN, Won JY, Yi S. A multi-channel collagen conduit with aligned Schwann cells and endothelial cells for enhanced neuronal regeneration in spinal cord injury. Biomater Sci 2023; 11:7884-7896. [PMID: 37906468 DOI: 10.1039/d3bm01152f] [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: 11/02/2023]
Abstract
Traumatic spinal cord injury (SCI) leads to Wallerian degeneration and the accompanying disruption of vasculature leads to ischemia, which damages motor and sensory function. Therefore, understanding the biological environment during regeneration is essential to promote neuronal regeneration and overcome this phenomenon. The band of Büngner is a structure of an aligned Schwann cell (SC) band that guides axon elongation providing a natural recovery environment. During axon elongation, SCs promote axon elongation while migrating along neovessels (endothelial cells [ECs]). To model this, we used extrusion 3D bioprinting to develop a multi-channel conduit (MCC) using collagen for the matrix region and sacrificial alginate to make the channel. The MCC was fabricated with a structure in which SCs and ECs were longitudinally aligned to mimic the sophisticated recovering SCI conditions. Also, we produced an MCC with different numbers of channels. The aligned SCs and ECs in the 9-channel conduit (9MCC-SE) were more biocompatible and led to more proliferation than the 5-channel conduit (5MCC-SE) in vitro. Also, the 9MCC-SE resulted in a greater healing effect than the 5MCC-SE with respect to neuronal regeneration, remyelination, inflammation, and angiogenesis in vivo. The above tissue recovery results led to motor function repair. Our results show that our 9MCC-SE model represents a new therapeutic strategy for SCI.
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Affiliation(s)
- Hye Yeong Lee
- Spine & Spinal Cord Institute, Department of Neurosurgery, College of Medicine, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Seo Hyun Moon
- Spine & Spinal Cord Institute, Department of Neurosurgery, College of Medicine, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Donggu Kang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-Do, 15588, South Korea
| | - Eunjeong Choi
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-Do, 15588, South Korea
| | - Gi Hoon Yang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-Do, 15588, South Korea
| | - Keung Nyun Kim
- Spine & Spinal Cord Institute, Department of Neurosurgery, College of Medicine, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Joo Yun Won
- Clinical & Translational Research Institute, Anymedi INC., Seoul, South Korea
| | - Seong Yi
- Spine & Spinal Cord Institute, Department of Neurosurgery, College of Medicine, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 03722, Republic of Korea.
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5
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Wu S, Shen W, Ge X, Ao F, Zheng Y, Wang Y, Jia X, Mao Y, Luo Y. Advances in Large Gap Peripheral Nerve Injury Repair and Regeneration with Bridging Nerve Guidance Conduits. Macromol Biosci 2023; 23:e2300078. [PMID: 37235853 DOI: 10.1002/mabi.202300078] [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: 02/27/2023] [Revised: 05/10/2023] [Indexed: 05/28/2023]
Abstract
Peripheral nerve injury is a common complication of accidents and diseases. The traditional autologous nerve graft approach remains the gold standard for the treatment of nerve injuries. While sources of autologous nerve grafts are very limited and difficult to obtain. Nerve guidance conduits are widely used in the treatment of peripheral nerve injuries as an alternative to nerve autografts and allografts. However, the development of nerve conduits does not meet the needs of large gap peripheral nerve injury. Functional nerve conduits can provide a good microenvironment for axon elongation and myelin regeneration. Herein, the manufacturing methods and different design types of functional bridging nerve conduits for nerve conduits combined with electrical or magnetic stimulation and loaded with Schwann cells, etc., are summarized. It summarizes the literature and finds that the technical solutions of functional nerve conduits with electrical stimulation, magnetic stimulation and nerve conduits combined with Schwann cells can be used as effective strategies for bridging large gap nerve injury and provide an effective way for the study of large gap nerve injury repair. In addition, functional nerve conduits provide a new way to construct delivery systems for drugs and growth factors in vivo.
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Affiliation(s)
- Shang Wu
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Wen Shen
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Xuemei Ge
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Fen Ao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yan Zheng
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yigang Wang
- Department of Pharmacy, No. 215 Hospital of Shaanxi Nuclear Industry, Xianyang, Shaanxi, 712000, P. R. China
| | - Xiaoni Jia
- Central Laboratory, Xi'an Mental Health Center, Xi'an, 710061, P. R. China
| | - Yueyang Mao
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yali Luo
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
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Ke H, Yang H, Zhao Y, Li T, Xin D, Gai C, Jiang Z, Wang Z. 3D Gelatin Microsphere Scaffolds Promote Functional Recovery after Spinal Cord Hemisection in Rats. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204528. [PMID: 36453595 PMCID: PMC9875663 DOI: 10.1002/advs.202204528] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/22/2022] [Indexed: 05/24/2023]
Abstract
Spinal cord injury (SCI) damages signal connections and conductions, with the result that neuronal circuits are disrupted leading to neural dysfunctions. Such injuries represent a serious and relatively common central nervous system condition and current treatments have limited success in the reconstruction of nerve connections in injured areas, especially where sizeable gaps are present. Biomaterial scaffolds have become an effective alternative to nerve transplantation in filling these gaps and provide the foundation for simulating the 3D structure of solid organs. However, there remain some limitations with the application of 3D bioprinting for preparation of biomaterial scaffolds. Here, the approach in constructing and testing mini-tissue building blocks and self-assembly, solid 3D gelatin microsphere (GM) scaffolds with multiple voids as based on the convenient preparation of gelatin microspheres by microfluidic devices is described. These 3D GM scaffolds demonstrate suitable biocompatibility, biodegradation, porosity, low preparation costs, and relative ease of production. Moreover, 3D GM scaffolds can effectively bridge injury gaps, establish nerve connections and signal transductions, mitigate inflammatory microenvironments, and reduce glial scar formation. Accordingly, these 3D GM scaffolds can serve as a novel and effective bridging method to promote nerve regeneration and reconstruction and thus recovery of nerve function after SCI.
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Affiliation(s)
- Hongfei Ke
- Department of PhysiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University44 Wenhua Xi RoadJinanShandong250012P. R. China
| | - Hongru Yang
- State Key Laboratory of Crystal MaterialsShandong University27 Shanda NanluJinanShandong250100P. R. China
| | - Yijing Zhao
- Department of PhysiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University44 Wenhua Xi RoadJinanShandong250012P. R. China
| | - Tingting Li
- Department of PhysiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University44 Wenhua Xi RoadJinanShandong250012P. R. China
| | - Danqing Xin
- Department of PhysiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University44 Wenhua Xi RoadJinanShandong250012P. R. China
| | - Chengcheng Gai
- Department of PhysiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University44 Wenhua Xi RoadJinanShandong250012P. R. China
| | - Zige Jiang
- Department of PhysiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University44 Wenhua Xi RoadJinanShandong250012P. R. China
| | - Zhen Wang
- Department of PhysiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University44 Wenhua Xi RoadJinanShandong250012P. R. China
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Gong B, Zhang X, Zahrani AA, Gao W, Ma G, Zhang L, Xue J. Neural tissue engineering: From bioactive scaffolds and in situ monitoring to regeneration. EXPLORATION (BEIJING, CHINA) 2022; 2:20210035. [PMID: 37323703 PMCID: PMC10190951 DOI: 10.1002/exp.20210035] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 03/09/2022] [Indexed: 06/17/2023]
Abstract
Peripheral nerve injury is a large-scale problem that annually affects more than several millions of people all over the world. It remains a great challenge to effectively repair nerve defects. Tissue engineered nerve guidance conduits (NGCs) provide a promising platform for peripheral nerve repair through the integration of bioactive scaffolds, biological effectors, and cellular components. Herein, we firstly describe the pathogenesis of peripheral nerve injuries at different orders of severity to clarify their microenvironments and discuss the clinical treatment methods and challenges. Then, we discuss the recent progress on the design and construction of NGCs in combination with biological effectors and cellular components for nerve repair. Afterward, we give perspectives on imaging the nerve and/or the conduit to allow for the in situ monitoring of the nerve regeneration process. We also cover the applications of different postoperative intervention treatments, such as electric field, magnetic field, light, and ultrasound, to the well-designed conduit and/or the nerve for improving the repair efficacy. Finally, we explore the prospects of multifunctional platforms to promote the repair of peripheral nerve injury.
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Affiliation(s)
- Bowen Gong
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
| | - Xindan Zhang
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
| | - Ahmed Al Zahrani
- Department of Mechanical and Materials EngineeringUniversity of JeddahJeddahSaudi Arabia
| | - Wenwen Gao
- Department of RadiologyChina–Japan Friendship HospitalBeijingChina
| | - Guolin Ma
- Department of RadiologyChina–Japan Friendship HospitalBeijingChina
| | - Liqun Zhang
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
| | - Jiajia Xue
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
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Deng P, Chen F, Zhang H, Chen Y, Zhou J. Multifunctional Double-Layer Composite Hydrogel Conduit Based on Chitosan for Peripheral Nerve Repairing. Adv Healthc Mater 2022; 11:e2200115. [PMID: 35396930 DOI: 10.1002/adhm.202200115] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/31/2022] [Indexed: 12/21/2022]
Abstract
Peripheral nerve regeneration and functional recovery is a major challenge in clinical practice. Nerve conduit is an effective treatment for peripheral nerve repair, but the traditional hollow nerve conduit is not satisfactory in peripheral nerve repair due to the limitation of cell migration and nutrient transport. Herein, the double cross-linked hydrogels with injectable, self-healing, and conductive properties are synthesized by the Schiff base reaction between polyaniline-modified carboxymethyl chitosan and aldehyde-modified Pluronic F-127 (F127-CHO), and the hydrophobic interaction of F127-CHO. The conductive hydrogel is injected into the cavity of chitosan conduit prepared by electrodeposition. The inner conductive hydrogel and the outer chitosan conduit are formed into a whole through the Schiff base reaction to obtain a double-layer composite hydrogel nerve conduit. The double-layer composite hydrogel neural conduit loaded with 7,8-dihydroxyflavone (DHF) has excellent degradability, biocompatibility, antioxidant activity, and Schwann cell proliferation activity. In the rat sciatic nerve defect model, the double-layer composite hydrogel nerve conduit significantly promotes sciatic nerve regeneration compared with the chitosan hollow conduit. Surprisingly, the repair ability of double-layered hydrogel nerve conduit loaded with DHF is comparable to that of autologous transplantation. Therefore, this multifunctional double-layer composite hydrogel conduit has great potential for peripheral nerve repairing.
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Affiliation(s)
- Pengpeng Deng
- Hubei Engineering Center of Natural Polymers‐based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry Wuhan University Wuhan 430072 China
- Department of Biomedical Engineering Hubei Province Key Laboratory of Allergy and Immune Related Diseases School of Basic Medical Science Wuhan University Wuhan 430071 China
| | - Feixiang Chen
- Glyn O. Philips Hydrocolloid Research Centre at HUT Hubei University of Technology Wuhan 430068 China
| | - Haodong Zhang
- Hubei Engineering Center of Natural Polymers‐based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry Wuhan University Wuhan 430072 China
| | - Yun Chen
- Glyn O. Philips Hydrocolloid Research Centre at HUT Hubei University of Technology Wuhan 430068 China
| | - Jinping Zhou
- Hubei Engineering Center of Natural Polymers‐based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry Wuhan University Wuhan 430072 China
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Advances in Electrospun Nerve Guidance Conduits for Engineering Neural Regeneration. Pharmaceutics 2022; 14:pharmaceutics14020219. [PMID: 35213952 PMCID: PMC8876219 DOI: 10.3390/pharmaceutics14020219] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 12/12/2022] Open
Abstract
Injuries to the peripheral nervous system result in devastating consequences with loss of motor and sensory function and lifelong impairments. Current treatments have largely relied on surgical procedures, including nerve autografts to repair damaged nerves. Despite improvements to the surgical procedures over the years, the clinical success of nerve autografts is limited by fundamental issues, such as low functionality and mismatching between the damaged and donor nerves. While peripheral nerves can regenerate to some extent, the resultant outcomes are often disappointing, particularly for serious injuries, and the ongoing loss of function due to poor nerve regeneration is a serious public health problem worldwide. Thus, a successful therapeutic modality to bring functional recovery is urgently needed. With advances in three-dimensional cell culturing, nerve guidance conduits (NGCs) have emerged as a promising strategy for improving functional outcomes. Therefore, they offer a potential therapeutic alternative to nerve autografts. NGCs are tubular biostructures to bridge nerve injury sites via orienting axonal growth in an organized fashion as well as supplying a supportively appropriate microenvironment. Comprehensive NGC creation requires fundamental considerations of various aspects, including structure design, extracellular matrix components and cell composition. With these considerations, the production of an NGC that mimics the endogenous extracellular matrix structure can enhance neuron–NGC interactions and thereby promote regeneration and restoration of function in the target area. The use of electrospun fibrous substrates has a high potential to replicate the native extracellular matrix structure. With recent advances in electrospinning, it is now possible to generate numerous different biomimetic features within the NGCs. This review explores the use of electrospinning for the regeneration of the nervous system and discusses the main requirements, challenges and advances in developing and applying the electrospun NGC in the clinical practice of nerve injuries.
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Zhang X, Meng Y, Gong B, Wang T, Lu Y, Zhang L, Xue J. Electrospun Nanofibers for Manipulating the Soft Tissue Regeneration. J Mater Chem B 2022; 10:7281-7308. [DOI: 10.1039/d2tb00609j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Soft tissue damage is a common clinical problem that affects the lives of a large number of patients all over the world. It is of great importance to develop functional...
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11
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Casanova MR, Reis RL, Martins A, Neves NM. Stimulation of Neurite Outgrowth Using Autologous NGF Bound at the Surface of a Fibrous Substrate. Biomolecules 2021; 12:25. [PMID: 35053173 PMCID: PMC8773656 DOI: 10.3390/biom12010025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/13/2021] [Accepted: 12/20/2021] [Indexed: 01/09/2023] Open
Abstract
Peripheral nerve injury still remains a major clinical challenge, since the available solutions lead to dysfunctional nerve regeneration. Even though autologous nerve grafts are the gold standard, tissue engineered nerve guidance grafts are valid alternatives. Nerve growth factor (NGF) is the most potent neurotrophic factor. The development of a nerve guidance graft able to locally potentiate the interaction between injured neurons and autologous NGF would be a safer and more effective alternative to grafts that just release NGF. Herein, a biofunctional electrospun fibrous mesh (eFM) was developed through the selective retrieval of NGF from rat blood plasma. The neurite outgrowth induced by the eFM-NGF systems was assessed by culturing rat pheochromocytoma (PC12) cells for 7 days, without medium supplementation. The biological results showed that this NGF delivery system stimulates neuronal differentiation, enhancing the neurite growth more than the control condition.
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Affiliation(s)
- Marta R. Casanova
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark–Parque de Ciencia e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco/Guimarães, Portugal; (M.R.C.); (R.L.R.); (A.M.)
- ICVS/3B’s–PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Rui L. Reis
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark–Parque de Ciencia e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco/Guimarães, Portugal; (M.R.C.); (R.L.R.); (A.M.)
- ICVS/3B’s–PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Albino Martins
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark–Parque de Ciencia e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco/Guimarães, Portugal; (M.R.C.); (R.L.R.); (A.M.)
- ICVS/3B’s–PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Nuno M. Neves
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark–Parque de Ciencia e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco/Guimarães, Portugal; (M.R.C.); (R.L.R.); (A.M.)
- ICVS/3B’s–PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
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Zhang X, Gong B, Zhai J, Zhao Y, Lu Y, Zhang L, Xue J. A Perspective: Electrospun Fibers for Repairing Spinal Cord Injury. Chem Res Chin Univ 2021. [DOI: 10.1007/s40242-021-1162-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Lan X, Wang H, Bai J, Miao X, Lin Q, Zheng J, Ding S, Li X, Tang Y. Multidrug-loaded electrospun micro/nanofibrous membranes: Fabrication strategies, release behaviors and applications in regenerative medicine. J Control Release 2021; 330:1264-1287. [PMID: 33232749 DOI: 10.1016/j.jconrel.2020.11.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 01/02/2023]
Abstract
Electrospun micro/nanofibrous membranes (EFMs) have been widely investigated as local drug delivery systems. Multiple drugs can be simultaneously incorporated into one EFM to create synergistic effects, reduce side effects, and play their respective roles in the complex physiological processes of tissue regeneration and postoperative adhesion prevention. Due to the versatile electrospinning techniques, sustained and programmed release behaviors of multiple drugs could be achieved by modulating the structure of the EFMs and the location of the drugs. In this review, various multidrug incorporation approaches based on electrospinning are overviewed. In particular, the advantages and limitations of each drug incorporation technique, the methods to control drug release and the effect of one drug release on another are discussed. Then the applications of multidrug-loaded EFMs in regenerative medicine, including wound healing, bone regeneration, vascular tissue engineering, nerve regeneration, periodontal regeneration and adhesion prevention are comprehensively reviewed. Finally, the future perspectives and challenges in the research of multidrug-loaded EFMs are discussed.
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Affiliation(s)
- Xingzi Lan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Han Wang
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Jianfu Bai
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiaomin Miao
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Quan Lin
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Jianpei Zheng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Shukai Ding
- Materials Institute of Atomic and Molecular Science, ShaanXi University of Science and Technology, Xi'an 710021, China
| | - Xiaoran Li
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Yadong Tang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China; School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
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Puhl DL, Funnell JL, Nelson DW, Gottipati MK, Gilbert RJ. Electrospun Fiber Scaffolds for Engineering Glial Cell Behavior to Promote Neural Regeneration. Bioengineering (Basel) 2020; 8:4. [PMID: 33383759 PMCID: PMC7823609 DOI: 10.3390/bioengineering8010004] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 02/06/2023] Open
Abstract
Electrospinning is a fabrication technique used to produce nano- or micro- diameter fibers to generate biocompatible, biodegradable scaffolds for tissue engineering applications. Electrospun fiber scaffolds are advantageous for neural regeneration because they mimic the structure of the nervous system extracellular matrix and provide contact guidance for regenerating axons. Glia are non-neuronal regulatory cells that maintain homeostasis in the healthy nervous system and regulate regeneration in the injured nervous system. Electrospun fiber scaffolds offer a wide range of characteristics, such as fiber alignment, diameter, surface nanotopography, and surface chemistry that can be engineered to achieve a desired glial cell response to injury. Further, electrospun fibers can be loaded with drugs, nucleic acids, or proteins to provide the local, sustained release of such therapeutics to alter glial cell phenotype to better support regeneration. This review provides the first comprehensive overview of how electrospun fiber alignment, diameter, surface nanotopography, surface functionalization, and therapeutic delivery affect Schwann cells in the peripheral nervous system and astrocytes, oligodendrocytes, and microglia in the central nervous system both in vitro and in vivo. The information presented can be used to design and optimize electrospun fiber scaffolds to target glial cell response to mitigate nervous system injury and improve regeneration.
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Affiliation(s)
- Devan L. Puhl
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - Jessica L. Funnell
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - Derek W. Nelson
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - Manoj K. Gottipati
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
- Center for Brain and Spinal Cord Repair, Department of Neuroscience, The Ohio State University, 460 W. 12th Avenue, Columbus, OH 43210, USA
| | - Ryan J. Gilbert
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
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Wang J, Xiong H, Zhu T, Liu Y, Pan H, Fan C, Zhao X, Lu WW. Bioinspired Multichannel Nerve Guidance Conduit Based on Shape Memory Nanofibers for Potential Application in Peripheral Nerve Repair. ACS NANO 2020; 14:12579-12595. [PMID: 32786254 DOI: 10.1021/acsnano.0c03570] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Repairing peripheral nerve injury, especially long-range defects of thick nerves, is a great challenge in the clinic due to their limited regeneration capability. Most FDA-approved nerve guidance conduits with large hollow lumen are only suitable for short lesions, and their effects are unsatisfactory in repairing long gaps of thick nerves. Multichannel nerve guidance conduits have been shown to offer better regeneration of long nerve defects. However, existing approaches of fabricating multichannel nerve conduits are usually complicated and time-consuming. Inspired by the intelligent responsive shaping process of shape memory polymers, in this study, a self-forming multichannel nerve guidance conduit with topographical cues was constructed based on a degradable shape memory PLATMC polymer. With an initial tubular shape obtained by a high-temperature molding process, the electrospun shape memory nanofibrous mat could be temporarily formed into a planar shape for cell loading to realize the uniform distribution of cells. Then triggered by a physical temperature around 37 °C, it could automatically restore its permanent tubular shape to form the multichannel conduit. This multichannel conduit exhibits better performance in terms of cell growth and the repair of rat sciatic nerve defects. These results reveal that self-forming nerve conduits can be realized based on shape memory polymers; thus, the fabricated bioinspired multichannel nerve guidance conduit has great potential in peripheral nerve regeneration.
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Affiliation(s)
- Jing Wang
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P.R. China
| | - Hao Xiong
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, P.R. China
| | - Tonghe Zhu
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, P.R. China
| | - Yuan Liu
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P.R. China
| | - Haobo Pan
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P.R. China
| | - Cunyi Fan
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, P.R. China
- Department of Orthopedics, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences, Shanghai 201306, P.R. China
| | - Xiaoli Zhao
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P.R. China
| | - William Weijia Lu
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P.R. China
- Department of Orthopaedic and Traumatology, The University of Hong Kong, Hong Kong 999077, P.R. China
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Wang J, Wang H, Mo X, Wang H. Reduced Graphene Oxide-Encapsulated Microfiber Patterns Enable Controllable Formation of Neuronal-Like Networks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2004555. [PMID: 32875631 PMCID: PMC10865229 DOI: 10.1002/adma.202004555] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 07/31/2020] [Indexed: 05/24/2023]
Abstract
Scaffold-guided formation of neuronal-like networks, especially under electrical stimulation, can be an appealing avenue toward functional restoration of injured nervous systems. Here, 3D conductive scaffolds are fabricated based on printed microfiber constructs using near-field electrostatic printing (NFEP) and graphene oxide (GO) coating. Various microfiber patterns are obtained from poly(l-lactic acid-co-caprolactone) (PLCL) using NFEP and complexity is achieved via modulating the fiber overlay angles (45°, 60°, 75°, 90°), fiber diameters (15 to 148 µm), and fiber spatial organization (spider web and tubular structure). Upon coating GO onto PLCL microfibers via a layer-by-layer (L-b-L) assembly technique and in situ reduction into reduced GO (rGO), the obtained conductive scaffolds, with 25-50 layers of rGO, demonstrate superior conductivity (≈0.95 S cm-1 ) and capability of inducing neuronal-like network formation along the conductive microfibers under electrical stimulation (100-150 mV cm-1 ). Both electric field (0-150 mV cm-1 ) and microfiber diameter (17-150 µm) affect neurite outgrowth (PC-12 cells and primary mouse hippocampal neurons) and the formation of orientated neuronal-like networks. With further demonstration of such guidance to neuronal cells, these conductive scaffolds may see versatile applications in nerve regeneration and neural engineering.
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Affiliation(s)
- Juan Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Haoyu Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Xiumei Mo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Hongjun Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
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Wu T, Mo X, Xia Y. Moving Electrospun Nanofibers and Bioprinted Scaffolds toward Translational Applications. Adv Healthc Mater 2020; 9:e1901761. [PMID: 31999081 PMCID: PMC7758812 DOI: 10.1002/adhm.201901761] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/17/2020] [Indexed: 12/20/2022]
Abstract
Over the past two decades, electrospun nanofibers have been actively explored for a range of applications, including those related to biomedicine, environmental science, energy harvesting, catalysis, photonics, and electronics. Regarding biomedical applications, one can readily produce nanofiber-based scaffolds with controlled compositions, structures, alignments, and functions by varying the material, design of collector, number of spinnerets, and electrospinning parameters. This report highlights both preclinical and translational applications of electrospun nanofibers and bioprinted constructs presented at the 2019 International Conference on Electrospinning, together with some perspectives on their future development.
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Affiliation(s)
- Tong Wu
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
| | - Xiumei Mo
- State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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