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Zhu Y, Yi D, Wang J, Zhang Y, Li M, Ma J, Ji Y, Peng J, Wang Y, Luo Y. Harnessing three-dimensional porous chitosan microsphere embedded with adipose-derived stem cells to promote nerve regeneration. Stem Cell Res Ther 2024; 15:158. [PMID: 38824568 PMCID: PMC11144330 DOI: 10.1186/s13287-024-03753-w] [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: 12/27/2023] [Accepted: 05/05/2024] [Indexed: 06/03/2024] Open
Abstract
BACKGROUND Nerve guide conduits are a promising strategy for reconstructing peripheral nerve defects. Improving the survival rate of seed cells in nerve conduits is still a challenge and microcarriers are an excellent three-dimensional (3D) culture scaffold. Here, we investigate the effect of the 3D culture of microcarriers on the biological characteristics of adipose mesenchymal stem cells (ADSCs) and to evaluate the efficacy of chitosan nerve conduits filled with microcarriers loaded with ADSCs in repairing nerve defects. METHODS In vitro, we prepared porous chitosan microspheres by a modified emulsion cross-linking method for loading ADSCs and evaluated the growth status and function of ADSCs. In vivo, ADSCs-loaded microcarriers were injected into chitosan nerve conduits to repair a 12 mm sciatic nerve defect in rats. RESULTS Compared to the conventional two-dimensional (2D) culture, the prepared microcarriers were more conducive to the proliferation, migration, and secretion of trophic factors of ADSCs. In addition, gait analysis, neuro-electrophysiology, and histological evaluation of nerves and muscles showed that the ADSC microcarrier-loaded nerve conduits were more effective in improving nerve regeneration. CONCLUSIONS The ADSCs-loaded chitosan porous microcarrier prepared in this study has a high cell engraftment rate and good potential for peripheral nerve repair.
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Affiliation(s)
- Yaqiong Zhu
- Department of Ultrasound, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
- Beijing Key Lab of Regenerative Medicine in Orthopaedics, Chinese PLA General Hospital, Beijing, China
- Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
- Beijing Key Laboratory of Chronic Heart Failure Precision Medicine, Chinese PLA General Hospital, Beijing, China
| | - Dan Yi
- Department of Ultrasound, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
- Medical School of Chinese PLA, Beijing, 100853, China
| | - Jing Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui Province, China
| | - Yongyi Zhang
- Medical School of Chinese PLA, Beijing, 100853, China
- Department of Rehabilitation Medicine, the Second Medical Centre, Chinese PLA General Hospital, Beijing, China
- No.962 Hospital of the PLA Joint Logistic Support Force, Harbin, China
| | - Molin Li
- Department of Ultrasound, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
- Medical School of Chinese PLA, Beijing, 100853, China
| | - Jun Ma
- Department of Ultrasound, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yongjiao Ji
- Department of Ultrasound, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
| | - Jiang Peng
- Beijing Key Lab of Regenerative Medicine in Orthopaedics, Chinese PLA General Hospital, Beijing, China.
- Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China.
- Department of Orthopaedics, The Fourth Centre of Chinese PLA General Hospital, Beijing, China.
| | - Yuexiang Wang
- Department of Ultrasound, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China.
| | - Yukun Luo
- Department of Ultrasound, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China.
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Li Y, Takanari K, Nakamura R, Kambe M, Ebisawa K, Oishi M, Kamei Y. Artificial PGA/Collagen-based Bilayer Conduit in Short Gap Interposition Setting Provides Comparable Regenerative Potential to Direct Suture. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2023; 11:e4875. [PMID: 36998535 PMCID: PMC10043553 DOI: 10.1097/gox.0000000000004875] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 01/27/2023] [Indexed: 03/29/2023]
Abstract
The aim of this study was to evaluate whether the Nerbridge, an artificial polyglycolic acid conduit with collagen matrix, is comparable to direct nerve suture in a rat sciatic nerve injury model in a short-gap interposition (SGI) setting. Methods Sixty-six female Lewis rats were randomly divided into the sham group (n = 13); no reconstruction (no-recon) group (n = 13; rat model with 10 mm sciatic nerve defect); direct group (n = 20; rat sciatic nerve injury directly connected by 10-0 Nylon); and SGI group (n = 20; sciatic nerve injury repaired using 5-mm Nerbridge). Motor function and histological recovery were evaluated. The sciatic nerve and gastrocnemius muscle were harvested for quantification of the degree of nerve regeneration and muscle atrophy. Results The SGI and direct groups achieved equal recovery in both functional and histological outcomes. At weeks 3 and 8 postsurgery, there was a significant improvement in the sciatic functional index of the SGI group when compared with that of the no-recon group (P < 0.05). Furthermore, the direct and SGI groups had less muscle atrophy at 4 and 8 weeks postsurgery compared with the no-recon group (P < 0.05). The axon density and diameter at the distal site in the SGI group were significantly higher than that in the no-recon group and comparable to that in the direct and sham groups. Conclusion An artificial nerve conduit has equal potential as direct suture in motor nerve reconstruction when used in the SGI setting.
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Idrisova KF, Zeinalova AK, Masgutova GA, Bogov AA, Allegrucci C, Syromiatnikova VY, Salafutdinov II, Garanina EE, Andreeva DI, Kadyrov AA, Rizvanov AA, Masgutov RF. Application of neurotrophic and proangiogenic factors as therapy after peripheral nervous system injury. Neural Regen Res 2022; 17:1240-1247. [PMID: 34782557 PMCID: PMC8643040 DOI: 10.4103/1673-5374.327329] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/14/2020] [Accepted: 06/04/2021] [Indexed: 11/24/2022] Open
Abstract
The intrinsic ability of peripheral nerves to regenerate after injury is extremely limited, especially in case of severe injury. This often leads to poor motor function and permanent disability. Existing approaches for the treatment of injured nerves do not provide appropriate conditions to support survival and growth of nerve cells. This drawback can be compensated by the use of gene therapy and cell therapy-based drugs that locally provide an increase in the key regulators of nerve growth, including neurotrophic factors and extracellular matrix proteins. Each growth factor plays its own specific angiotrophic or neurotrophic role. Currently, growth factors are widely studied as accelerators of nerve regeneration. Particularly noteworthy is synergy between various growth factors, that is essential for both angiogenesis and neurogenesis. Fibroblast growth factor 2 and vascular endothelial growth factor are widely known for their proangiogenic effects. At the same time, fibroblast growth factor 2 and vascular endothelial growth factor stimulate neural cell growth and play an important role in neurodegenerative diseases of the peripheral nervous system. Taken together, their neurotrophic and angiogenic properties have positive effect on the regeneration process. In this review we provide an in-depth overview of the role of fibroblast growth factor 2 and vascular endothelial growth factor in the regeneration of peripheral nerves, thus demonstrating their neurotherapeutic efficacy in improving neuron survival in the peripheral nervous system.
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Affiliation(s)
| | | | | | | | - Cinzia Allegrucci
- Biodiscovery Institute, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, UK
| | | | | | | | | | | | | | - Ruslan Faridovich Masgutov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
- Republican Clinical Hospital, Kazan, Russia
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4
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Pi W, Zhang Y, Li L, Li C, Zhang M, Zhang W, Cai Q, Zhang P. Polydopamine-coated polycaprolactone/carbon nanotubes fibrous scaffolds loaded with brain-derived neurotrophic factor for peripheral nerve regeneration. Biofabrication 2022; 14. [PMID: 35193120 DOI: 10.1088/1758-5090/ac57a6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 02/22/2022] [Indexed: 11/12/2022]
Abstract
Carbon nanotubes (CNTs) have attracted increasing attention in the field of peripheral nerve tissue engineering owing to their unique structural and physical characteristics. In this study, a novel type of aligned conductive scaffolds composed of polycaprolactone (PCL) and CNTs were fabricated via electrospinning. Utilizing the mussel-inspired polydopamine (PDA) surface modification, brain-derived neurotrophic factor (BDNF) was loaded onto PCL/CNTs fibrous scaffolds to obtain PCL/CNTs-PDA-BDNF fibrous scaffolds capable of the sustained release of BDNF over 28 days. Schwann cells were cultured on these scaffolds, and the effects of the scaffolds on peripheral nerve regeneration in vitro were assessed by studying cell proliferation, morphology and the expressions of myelination-related genes S100, P0 and myelin basic protein (MBP). Furthermore, the effects of these scaffolds on peripheral nerve regeneration in vivo were investigated using a 10-mm rat sciatic nerve defect model. Both the in vitro and in vivo results indicated that PCL/CNTs-PDA-BDNF fibrous scaffolds could effectively promote sciatic nerve regeneration and functional recovery. Therefore, PCL/CNTs-PDA-BDNF fibrous scaffolds have great potential for peripheral nerve restoration.
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Affiliation(s)
- Wei Pi
- Department of Orthopedics and Trauma, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, P.R.China, Beijing, 100044, CHINA
| | - Yanling Zhang
- Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing, CN, Beijing China, Beijing, 100029, CHINA
| | - Longfei Li
- Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing, CN, Beijing China, Beijing, 100029, CHINA
| | - Ci Li
- Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, P.R.China, Beijing, 100044, CHINA
| | - Meng Zhang
- Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, P.R.China, Beijing, 100044, CHINA
| | - Wei Zhang
- Department of Orthopedics and Trauma, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, P.R.China, Beijing, 100044, CHINA
| | - Qing Cai
- Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing, CN, Beijing China, Beijing, 100029, CHINA
| | - Peixun Zhang
- Department of Orthopedics and Trauma, Peking University People's Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, P.R.China, Beijing, 100044, CHINA
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Zhang S, Wang J, Zheng Z, Yan J, Zhang L, Li Y, Zhang J, Li G, Wang X, Kaplan D. Porous nerve guidance conduits reinforced with braided composite structures of silk/magnesium filaments for peripheral nerve repair. Acta Biomater 2021; 134:116-130. [PMID: 34289421 DOI: 10.1016/j.actbio.2021.07.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 07/05/2021] [Accepted: 07/13/2021] [Indexed: 02/06/2023]
Abstract
Peripheral nerve repair is a common but challenging surgical treatment. Many artificial nerve grafts have been developed, including nerve guidance conduits (NGCs) with biocompatibility, suitable mechanical properties and topography to guide axon growth. However, there remains a need to promote nerve regeneration and accelerate functional recovery using NGCs for nerve reconstruction. Here, silk fibroin (SF) and magnesium (S/Mg) filaments were braided into an inner layer of NGC and freeze-dried with a solution of SF and chitosan (CS). The mechanical stress of these S/Mg-SF/CS conduits reached 2.8 ± 0.2 N and possessed high compression strength. The conduits were evaluated with subcutaneous implantation. Sustainable mechanical function was demonstrated when used to repair 10 mm sciatic nerve gaps in rats. The hollow NGCs improved neurochemotaxis from the damaged nerves. The wet weight ratio of the gastrocnemius muscle, a target muscle for the sciatic nerve related to motor and sensory functions in the NGC group, reached 83.5% of that in the autologous group in 8 weeks; the nerve ports at both ends of the NGC grew well. When the distal end of the regenerated nerve was observed by Transmission Electron Microscopy (TEM), there was no significance difference in the diameter and thickness of the myelin sheath of the distal nerve between the autograft and S/Mg-SF/CS group, indicating that S/Mg-SF/CS NGC in this study promoted the growth of damaged nerves and provided appropriate physio mechanical guidance, thus suggesting potential utility for this approach in artificial nerve transplantation. STATEMENT OF SIGNIFICANCE: 1. Porous nerve guidance conduits (NGCs) is reinforced by a braided composite structure consisting of silk/magnesium filaments, which provides the NGC with appropriate physio-mechanical guidance as well as sufficient stability to support the biological micro-environment during early-stages of nerve regeneration and functional recovery. 2. Sufficient mechanical properties, biocompatibility with Schwan cells and good performance after sciatic nerve transplantation demonstrates that the S/Mg-SF/CS NGC in this study promotes the growth of damaged nerves and provides a suitable physio-mechanical guide for potential in artificial nerve transplantation. 3. A facile scalable manufacturing process is achieved by utilizing multidisciplinary engineering, such as textile technologies, biomaterial engineering and medical science.
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Affiliation(s)
- Shujun Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Jing Wang
- Laboratory animal center of Soochow University, Suzhou 215123, China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Jia Yan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Li Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Yi Li
- School of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Jiaheng Zhang
- Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, PR China
| | - Gang Li
- 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.
| | - David Kaplan
- Department of Biomedical Engineering, 4 Colby Street, Tufts University, Medford, MA 02155, USA.
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Hansson ML, Chatterjee U, Francis J, Arndt T, Broman C, Johansson J, Sköld MK, Rising A. Artificial spider silk supports and guides neurite extension in vitro. FASEB J 2021; 35:e21896. [PMID: 34634154 DOI: 10.1096/fj.202100916r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/01/2021] [Accepted: 08/17/2021] [Indexed: 01/09/2023]
Abstract
Surgical intervention with the use of autografts is considered the gold standard to treat peripheral nerve injuries. However, a biomaterial that supports and guides nerve growth would be an attractive alternative to overcome problems with limited availability, morbidity at the site of harvest, and nerve mismatches related to autografts. Native spider silk is a promising material for construction of nerve guidance conduit (NGC), as it enables regeneration of cm-long nerve injuries in sheep, but regulatory requirements for medical devices demand synthetic materials. Here, we use a recombinant spider silk protein (NT2RepCT) and a functionalized variant carrying a peptide derived from vitronectin (VN-NT2RepCT) as substrates for nerve growth support and neurite extension, using a dorsal root ganglion cell line, ND7/23. Two-dimensional coatings were benchmarked against poly-d-lysine and recombinant laminins. Both spider silk coatings performed as the control substrates with regards to proliferation, survival, and neurite growth. Furthermore, NT2RepCT and VN-NT2RepCT spun into continuous fibers in a biomimetic spinning set-up support cell survival, neurite growth, and guidance to an even larger extent than native spider silk. Thus, artificial spider silk is a promising biomaterial for development of NGCs.
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Affiliation(s)
- Magnus L Hansson
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Experimental Traumatology Unit, Department of Neuroscience, Biomedicum B8 Karolinska Institutet, Stockholm, Sweden
| | - Urmimala Chatterjee
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Juanita Francis
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Tina Arndt
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Christian Broman
- Experimental Traumatology Unit, Department of Neuroscience, Biomedicum B8 Karolinska Institutet, Stockholm, Sweden
| | - Jan Johansson
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Mattias K Sköld
- Experimental Traumatology Unit, Department of Neuroscience, Biomedicum B8 Karolinska Institutet, Stockholm, Sweden.,Department of Neuroscience, Section of Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Anna Rising
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Wang B, Lu CF, Liu ZY, Han S, Wei P, Zhang DY, Kou YH, Jiang BG. Chitin scaffold combined with autologous small nerve repairs sciatic nerve defects. Neural Regen Res 2021; 17:1106-1114. [PMID: 34558539 PMCID: PMC8552871 DOI: 10.4103/1673-5374.324859] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Although autologous nerve transplantation is the gold standard for treating peripheral nerve defects, it has many clinical limitations. As an alternative, various tissue-engineered nerve grafts have been developed to substitute for autologous nerves. In this study, a novel nerve graft composed of chitin scaffolds and a small autologous nerve was used to repair sciatic nerve defects in rats. The novel nerve graft greatly facilitated regeneration of the sciatic nerve and myelin sheath, reduced atrophy of the target muscle, and effectively restored neurological function. When the epineurium of the small autogenous nerve was removed, the degree of nerve regeneration was similar to that which occurs after autogenous nerve transplantation. These findings suggest that our novel nerve graft might eventually be a new option for the construction of tissue-engineered nerve scaffolds. The study was approved by the Research Ethics Committee of Peking University People's Hospital (approval No. 2019PHE27) on October 18, 2019.
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Affiliation(s)
- Bo Wang
- Department of Orthopedics and Trauma, Key Laboratory of Trauma and Neural Regeneration (Ministry of Education/Peking University), Peking University People's Hospital, Beijing, China
| | - Chang-Feng Lu
- Department of Orthopedics and Trauma, Key Laboratory of Trauma and Neural Regeneration (Ministry of Education/Peking University), Peking University People's Hospital, Beijing, China
| | - Zhong-Yang Liu
- Department of Orthopedics, Chinese PLA General Hospital; National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China
| | - Shuai Han
- Department of Orthopedics and Trauma, Key Laboratory of Trauma and Neural Regeneration (Ministry of Education/Peking University), Peking University People's Hospital, Beijing, China
| | - Pi Wei
- Department of Orthopedics and Trauma, Key Laboratory of Trauma and Neural Regeneration (Ministry of Education/Peking University), Peking University People's Hospital, Beijing, China
| | - Dian-Ying Zhang
- Department of Orthopedics and Trauma, Key Laboratory of Trauma and Neural Regeneration (Ministry of Education/Peking University), Peking University People's Hospital, Beijing, China
| | - Yu-Hui Kou
- Department of Orthopedics and Trauma, Key Laboratory of Trauma and Neural Regeneration (Ministry of Education/Peking University), Peking University People's Hospital, Beijing, China
| | - Bao-Guo Jiang
- Department of Orthopedics and Trauma, Key Laboratory of Trauma and Neural Regeneration (Ministry of Education/Peking University), Peking University People's Hospital, Beijing, China
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Peripheral Nerve Regeneration Using Different Germ Layer-Derived Adult Stem Cells in the Past Decade. Behav Neurol 2021; 2021:5586523. [PMID: 34539934 PMCID: PMC8448597 DOI: 10.1155/2021/5586523] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/27/2021] [Accepted: 08/09/2021] [Indexed: 12/15/2022] Open
Abstract
Peripheral nerve injuries (PNIs) are some of the most common types of traumatic lesions affecting the nervous system. Although the peripheral nervous system has a higher regenerative ability than the central nervous system, delayed treatment is associated with disturbances in both distal sensory and functional abilities. Over the past decades, adult stem cell-based therapies for peripheral nerve injuries have drawn attention from researchers. This is because various stem cells can promote regeneration after peripheral nerve injuries by differentiating into neural-line cells, secreting various neurotrophic factors, and regulating the activity of in situ Schwann cells (SCs). This article reviewed research from the past 10 years on the role of stem cells in the repair of PNIs. We concluded that adult stem cell-based therapies promote the regeneration of PNI in various ways.
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9
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Wu F, Jiao C, Yang Y, Liu F, Sun Z. Nerve conduit based on HAP/PDLLA/PRGD for peripheral nerve regeneration with sustained release of valproic acid. Cell Biol Int 2021; 45:1733-1742. [PMID: 33851759 DOI: 10.1002/cbin.11613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 04/03/2021] [Accepted: 04/12/2021] [Indexed: 11/06/2022]
Abstract
The nerve conduits have been developed for nerve defect repair. However, no artificial conduits have obtained comparable results to autografts to bridge the large gaps. A possible reason for this poor performance may be a lack of sustainable neurotrophic support for axonal regrowth. Previous studies suggested nanocomposite conduits can be used as a carrier for valproic acid (VPA), a common drug that can produce effects similar to the neurotrophic factors. Here, we developed the novel bioabsorbable conduits based on hydroxyapatite/poly d-l-lactic acid (PDLLA)/poly{(lactic acid)-co-[(glycolic acid)-alt-(l-lysine)]} with sustained release of VPA. Firstly, the sustained release of VPA in this conduit was examined by high-performance liquid chromatography. Then Schwann cells were treated with the conduit extracts. The cell metabolic activity and proliferation were assayed by 3-[4,5-dimethyl-2-thiazolyl]-2,5-diphenyl-2-tetrazolium bromide and bromodeoxyuridine staining. A 10-mm segment of rat sciatic nerve was resected and then repaired, respectively, using the VPA conduit (Group A), the PDLLA conduit (Group B), or the autografts (Group C). Nerve conduction velocities (NCVs), compound muscle action potentials (CMAPs), and histological staining were assayed following the surgery. The cell metabolic activity and proliferation were significantly increased (p < .05) by the extracts from VPA-conduit extract compared to others. NCVs and CMAPs were significantly higher in Groups A and C than Group B (p < .05). The nerve density of Groups A and C was higher than Group B. There was no significant difference between Groups A and C. Taken together, this study suggested the sustained-release VPA conduit promoted peripheral nerve regeneration that was comparable to the autografts. It holds potential for future use in nerve regeneration.
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Affiliation(s)
- Fei Wu
- Department of Orthopedics, Renmin Hospital, Wuhan University, Wuhan, Hubei, China
| | - Chuanjie Jiao
- Department of Orthopedics, Yangxin People's Hospital, Huangshi, Hubei, China
| | - Yue Yang
- Department of Orthopedics, Renmin Hospital, Wuhan University, Wuhan, Hubei, China
| | - Feng Liu
- Department of Orthopedics, Renmin Hospital, Wuhan University, Wuhan, Hubei, China
| | - Zhibo Sun
- Department of Orthopedics, Renmin Hospital, Wuhan University, Wuhan, Hubei, China
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Millesi F, Weiss T, Mann A, Haertinger M, Semmler L, Supper P, Pils D, Naghilou A, Radtke C. Defining the regenerative effects of native spider silk fibers on primary Schwann cells, sensory neurons, and nerve-associated fibroblasts. FASEB J 2021; 35:e21196. [PMID: 33210360 PMCID: PMC7894153 DOI: 10.1096/fj.202001447r] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/25/2020] [Accepted: 10/30/2020] [Indexed: 01/09/2023]
Abstract
The search for a suitable material to promote regeneration after long-distance peripheral nerve defects turned the spotlight on spider silk. Nerve conduits enriched with native spider silk fibers as internal guiding structures previously demonstrated a regenerative outcome similar to autologous nerve grafts in animal studies. Nevertheless, spider silk is a natural material with associated limitations for clinical use. A promising alternative is the production of recombinant silk fibers that should mimic the outstanding properties of their native counterpart. However, in vitro data on the regenerative features that native silk fibers provide for cells involved in nerve regeneration are scarce. Thus, there is a lack of reference parameters to evaluate whether recombinant silk fiber candidates will be eligible for nerve repair in vivo. To gain insight into the regenerative effect of native spider silk, our study aims to define the behavioral response of primary Schwann cells (SCs), nerve-associated fibroblasts (FBs), and dorsal root ganglion (DRG) neurons cultured on native dragline silk from the genus Nephila and on laminin coated dishes. The established multi-color immunostaining panels together with confocal microscopy and live cell imaging enabled the analysis of cell identity, morphology, proliferation, and migration on both substrates in detail. Our findings demonstrated that native spider silk rivals laminin coating as it allowed attachment and proliferation and supported the characteristic behavior of all tested cell types. Axonal out-growth of DRG neurons occurred along longitudinally aligned SCs that formed sustained bundled structures resembling Bungner bands present in regenerating nerves. The migration of SCs along the silk fibers achieved the reported distance of regenerating axons of about 1 mm per day, but lacked directionality. Furthermore, rFBs significantly reduced the velocity of rSCs in co-cultures on silk fibers. In summary, this study (a) reveals features recombinant silk must possess and what modifications or combinations could be useful for enhanced nerve repair and (b) provides assays to evaluate the regenerative performance of silk fibers in vitro before being applied as internal guiding structure in nerve conduits in vivo.
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Affiliation(s)
- Flavia Millesi
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Tamara Weiss
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Anda Mann
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
| | - Maximilian Haertinger
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Lorenz Semmler
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
| | - Paul Supper
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
| | - Dietmar Pils
- Division of General SurgeryDepartment of SurgeryComprehensive Cancer Center ViennaMedical University of ViennaViennaAustria
| | - Aida Naghilou
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
| | - Christine Radtke
- Research Laboratory of the Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
- Division of Plastic and Reconstructive SurgeryDepartment of SurgeryMedical University of ViennaViennaAustria
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11
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Niu Y, Galluzzi M. A biodegradable block polyurethane nerve-guidance scaffold enhancing rapid vascularization and promoting reconstruction of transected sciatic nerve in Sprague-Dawley rats. J Mater Chem B 2020; 8:11063-11073. [PMID: 33200763 DOI: 10.1039/d0tb02069a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Reconstruction of peripheral nerve defects with tissue engineered nerve scaffolds is an exciting field of biomedical research and holds potential for clinical application. However, due to poor neovascularization after the implantation, nerve regeneration is still not satisfactory, especially for large nerve defects. These obstacles hinder the investigation of basic neurobiological principles and development of a wide range of treatments for peripheral nerve diseases. Herein, we designed an amphiphilic alternating block polyurethane (abbreviated as PU) copolymer-based nerve guidance scaffold, which has good Schwann cell compatibility, and more importantly, a rapid vascularization of the scaffold in vivo. In the sciatic nerve transection model of SD rats, vascularized PU nerve guidance scaffolds induced rapid regeneration of nerve fibers and axons along the scaffold. Through the analysis of nerve electrophysiology, sciatic nerve functional index, histology, and immunofluorescence related to angiogenesis, we determined that PU with rapid vascularization function enhances recovery and re-obtains nerve conduction function. Our study points out a new strategy of using nerve tissue engineering scaffolds to treat large nerve defects.
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Affiliation(s)
- Yuqing Niu
- Department of Pediatric Surgery, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China.
| | - Massimiliano Galluzzi
- Materials Interface Center, Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
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12
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Yurie H, Ikeguchi R, Aoyama T, Ito A, Tanaka M, Noguchi T, Oda H, Takeuchi H, Mitsuzawa S, Ando M, Yoshimoto K, Akieda S, Nakayama K, Matsuda S. Mechanism of Peripheral Nerve Regeneration Using a Bio 3D Conduit Derived from Normal Human Dermal Fibroblasts. J Reconstr Microsurg 2020; 37:357-364. [PMID: 32957155 DOI: 10.1055/s-0040-1716855] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND We previously reported the development of a scaffold-free Bio three-dimensional (3D) nerve conduit from normal human dermal fibroblasts (NHDFs). The aim of this study was to investigate the regenerative mechanism of peripheral nerve cells using a Bio 3D conduit in a rat sciatic nerve defect model. METHODS Bio 3D conduits composed of NHDFs were developed, and cell viability was evaluated using a LIVE/DEAD cell viability assay immediately before transplantation and 1-week post-surgery. Tracking analysis using PKH26-labeled NHDFs was performed to assess the distribution of NHDFs within the regenerated nerve and the differentiation of NHDFs into functional Schwann cells (SCs). RESULTS The assessment of the viability of cells within the Bio 3D conduit showed high cell viability both immediately before transplantation and 1-week post-surgery (88.56 ± 1.70 and 87.58 ± 9.11, respectively). A modified Masson's trichrome staining of the Bio 3D conduit revealed the formation of a prominent extracellular matrix (ECM) in between the cells. We observed, via tracking analysis, that the tube-like distribution of the NHDFs remained stable, the majority of the regenerated axons had penetrated this structure and PKH26-labeled cells were also positive for S-100. CONCLUSION Abundant ECM formation resulted in a stable tube-like structure of the Bio 3D conduit with high cell viability. NHDFs in the Bio 3D conduit have the potential to differentiate into SCs-like cells.
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Affiliation(s)
- Hirofumi Yurie
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ryosuke Ikeguchi
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tomoki Aoyama
- Department of Physical Therapy, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akira Ito
- Department of Physical Therapy, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mai Tanaka
- Department of Physical Therapy, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takashi Noguchi
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiroki Oda
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hisataka Takeuchi
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sadaki Mitsuzawa
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Maki Ando
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Koichi Yoshimoto
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | - Koichi Nakayama
- Department of Regenerative Medicine and Biomedical Engineering Faculty of Medicine, Saga University, Saga, Japan
| | - Shuichi Matsuda
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
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13
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Fibroblasts Colonizing Nerve Conduits Express High Levels of Soluble Neuregulin1, a Factor Promoting Schwann Cell Dedifferentiation. Cells 2020; 9:cells9061366. [PMID: 32492853 PMCID: PMC7349576 DOI: 10.3390/cells9061366] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/26/2020] [Accepted: 05/30/2020] [Indexed: 12/12/2022] Open
Abstract
Conduits for the repair of peripheral nerve gaps are a good alternative to autografts as they provide a protected environment and a physical guide for axonal re-growth. Conduits require colonization by cells involved in nerve regeneration (Schwann cells, fibroblasts, endothelial cells, macrophages) while in the autograft many cells are resident and just need to be activated. Since it is known that soluble Neuregulin1 (sNRG1) is released after injury and plays an important role activating Schwann cell dedifferentiation, its expression level was investigated in early regeneration steps (7, 14, 28 days) inside a 10 mm chitosan conduit used to repair median nerve gaps in Wistar rats. In vivo data show that sNRG1, mainly the isoform α, is highly expressed in the conduit, together with a fibroblast marker, while Schwann cell markers, including NRG1 receptors, were not. Primary culture analysis shows that nerve fibroblasts, unlike Schwann cells, express high NRG1α levels, while both express NRG1β. These data suggest that sNRG1 might be mainly expressed by fibroblasts colonizing nerve conduit before Schwann cells. Immunohistochemistry analysis confirmed NRG1 and fibroblast marker co-localization. These results suggest that fibroblasts, releasing sNRG1, might promote Schwann cell dedifferentiation to a “repair” phenotype, contributing to peripheral nerve regeneration.
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14
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Hu X, Wang X, Xu Y, Li L, Liu J, He Y, Zou Y, Yu L, Qiu X, Guo J. Electric Conductivity on Aligned Nanofibers Facilitates the Transdifferentiation of Mesenchymal Stem Cells into Schwann Cells and Regeneration of Injured Peripheral Nerve. Adv Healthc Mater 2020; 9:e1901570. [PMID: 32338461 DOI: 10.1002/adhm.201901570] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/24/2020] [Indexed: 12/22/2022]
Abstract
Schwann cells (SCs) are the most promising seed cells for peripheral nerve tissue engineering, but clinical applications are limited by the lack of cell sources. Existing data demonstrate that bone marrow mesenchymal stem cells (BMSCs) can be induced to differentiate into Schwann-like cells and aligned nanofibers can enhance the differentiation. Considering that SCs are living along with the electrical conductive axons, it is hypothesized that conductivity properties may play roles in SCs differentiation and then facilitate nerve regeneration. To verify this hypothesis, amine functionalized multi-walled carbon nanotubes (MWCNTs) are incorporated with polycaprolactone and gelatin to fabricate aligned or random conductive nanofibers by electrospinning. Current data demonstrate that MWCNTs can dramatically increase the electrical conductive properties but do not alter the biocompatibility of the nanofibers. It is found that endowing conductive properties into the aligned nanofibers can significantly enhance their capability to promote the SCs differentiation. Furthermore, the aligned and conductive nanofibers with induced BMSCs can dramatically promote peripheral axonal regeneration. Collectively, the present study demonstrates that the conductive properties in the aligned nanofiber plays significant roles in SCs differentiation and the aligned and conductive nanofibers can be used as a promising scaffold for SCs differentiation and peripheral nerve tissue engineering.
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Affiliation(s)
- Xiaofang Hu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Department of Histology and EmbryologySouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Xianghai Wang
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Department of Histology and EmbryologySouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Yizhou Xu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Department of Histology and EmbryologySouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Lixia Li
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Department of Histology and EmbryologySouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Jingmin Liu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Department of Histology and EmbryologySouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Yutong He
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Ying Zou
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Department of Histology and EmbryologySouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Lei Yu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Xiaozhong Qiu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
| | - Jiasong Guo
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue EngineeringSouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Department of Histology and EmbryologySouthern Medical University Guangzhou Guangdong 510515 P. R. China
- Key Laboratory of Mental Health of the Ministry of Education Guangdong‐Hong Kong‐Macao Greater Bay Area Center for Brain Science and Brain‐Inspired IntelligenceGuangdong Province Key Laboratory of Psychiatric Disorders Guangzhou 510515 P. R. China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510530 P. R. China
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15
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Kočí Z, Sridharan R, Hibbitts AJ, Kneafsey SL, Kearney CJ, O'Brien FJ. The Use of Genipin as an Effective, Biocompatible, Anti-Inflammatory Cross-Linking Method for Nerve Guidance Conduits. ACTA ACUST UNITED AC 2020; 4:e1900212. [PMID: 32293152 DOI: 10.1002/adbi.201900212] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/06/2019] [Indexed: 11/09/2022]
Abstract
A number of natural polymer biomaterial-based nerve guidance conduits (NGCs) are developed to facilitate repair of peripheral nerve injuries. Cross-linking ensures mechanical integrity and desired degradation properties of the NGCs; however, common methods such as formaldehyde are associated with cellular toxicity. Hence, there is an unmet clinical need for alternative nontoxic cross-linking agents. In this study, collagen-based NGCs with a collagen/chondroitin sulfate luminal filler are used to study the effect of cross-linking on mechanical and structural properties, degradation, biocompatibility, and immunological response. A simplified manufacturing method of genipin cross-linking is developed, by incorporating genipin into solution prior to freeze-drying the NGCs. This leads to successful cross-linking as demonstrated by higher cross-linking degree and similar tensile strength of genipin cross-linked conduits compared to formaldehyde cross-linked conduits. Genipin cross-linking also preserves NGC macro and microstructure as observed through scanning electron microscopy and spectral analysis. Most importantly, in vitro cell studies show that genipin, unlike the formaldehyde cross-linked conduits, supports the viability of Schwann cells. Moreover, genipin cross-linked conduits direct macrophages away from a pro-inflammatory and toward a pro-repair state. Overall, genipin is demonstrated to be an effective, safe, biocompatible, and anti-inflammatory alternative to formaldehyde for cross-linking clinical grade NGCs.
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Affiliation(s)
- Zuzana Kočí
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin 2, D02YN77, Ireland.,Trinity Centre for Biomedical Engineering (TCBE), Trinity College Dublin, Dublin, D02PN40, Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, D02YN77, Ireland
| | - Rukmani Sridharan
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin 2, D02YN77, Ireland.,Trinity Centre for Biomedical Engineering (TCBE), Trinity College Dublin, Dublin, D02PN40, Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, D02YN77, Ireland
| | - Alan J Hibbitts
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin 2, D02YN77, Ireland.,Trinity Centre for Biomedical Engineering (TCBE), Trinity College Dublin, Dublin, D02PN40, Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, D02YN77, Ireland
| | - Simone L Kneafsey
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin 2, D02YN77, Ireland.,Trinity Centre for Biomedical Engineering (TCBE), Trinity College Dublin, Dublin, D02PN40, Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, D02YN77, Ireland
| | - Cathal J Kearney
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin 2, D02YN77, Ireland.,Trinity Centre for Biomedical Engineering (TCBE), Trinity College Dublin, Dublin, D02PN40, Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, D02YN77, Ireland
| | - Fergal J O'Brien
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin 2, D02YN77, Ireland.,Trinity Centre for Biomedical Engineering (TCBE), Trinity College Dublin, Dublin, D02PN40, Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, D02YN77, Ireland
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16
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Shekhter AB, Fayzullin AL, Vukolova MN, Rudenko TG, Osipycheva VD, Litvitsky PF. Medical Applications of Collagen and Collagen-Based Materials. Curr Med Chem 2019; 26:506-516. [PMID: 29210638 DOI: 10.2174/0929867325666171205170339] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 05/19/2017] [Accepted: 11/10/2017] [Indexed: 12/29/2022]
Abstract
Collagen and collagen-based materials have been successfully used in medicine for over 50 years. The number of scientific articles about the role of collagen in the construction of scaffolds for tissue engineering has risen precipitously in recent years. The review contains materials about historic and modern applications of collagen in medicine such as soluble collagen injections, solid constructs reconstructed from solution, and decellularized collagen matrices. The analysis of published data proves the efficacy of collagen material in the treatment of chronic wounds, burns, venous and diabetic ulcers, in plastic, reconstructive and general surgery, urology, proctology, gynecology, ophthalmology, otolaryngology, neurosurgery, dentistry, cardiovascular and bone and cartilage surgery, as well as in cosmetology. Further development of collagenoplasty requires addressing the problems of allergic complications, improvement of structure and maximizing therapeutic effects against pathological processes.
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Affiliation(s)
- Anatoly B Shekhter
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Alexey L Fayzullin
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Marina N Vukolova
- Department of Pathophysiology, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Tatyana G Rudenko
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Varvara D Osipycheva
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Petr F Litvitsky
- Department of Pathophysiology, Sechenov First Moscow State Medical University, Moscow, Russian Federation
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17
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Huang L, Xia B, Shi X, Gao J, Yang Y, Xu F, Qi F, Liang C, Huang J, Luo Z. Time-restricted release of multiple neurotrophic factors promotes axonal regeneration and functional recovery after peripheral nerve injury. FASEB J 2019; 33:8600-8613. [PMID: 30995417 DOI: 10.1096/fj.201802065rr] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Delivery of multiple neurotrophic factors (NTFs), especially with time-restricted release kinetics, holds great potential for nerve repair. In this study, we utilized the tetracycline-regulatable Tet-On 3G system to control the expression of c-Jun, which is a common regulator of multiple NTFs in Schwann cells (SCs). In vitro, Tet-On/c-Jun-modified SCs showed a tightly controllable secretion of multiple NTFs, including glial cell line-derived NTF, nerve growth factor, brain-derived NTF, and artemin, by the addition or removal of doxycycline (Dox). When Tet-On/c-Jun-transduced SCs were grafted in vivo, the expression of NTFs could also be regulated by oral administration or removal of Dox. Fluoro-Gold retrograde tracing results indicated that a biphasic NTF expression scheme (Dox+3/-9, NTFs were up-regulated for 3 wk and declined to physiologic levels for another 9 wk) achieved more axonal regeneration than continuous up-regulation of NTFs (Dox+12) or no NTF induction (Dox-12). More importantly, the Dox+3/-9-group animals showed much better functional recovery than the animals in the Dox+12 and Dox-12 groups. Our findings, for the first time, demonstrated drug-controllable expression of multiple NTFs in nerve repair cells both in vitro and in vivo. These findings provide new hope for developing an optimal therapeutic alternative for nerve repair through the time-restricted release of multiple NTFs using Tet-On/c-Jun-modified SCs.-Huang, L., Xia, B., Shi, X., Gao, J., Yang, Y., Xu, F., Qi, F., Liang, C., Huang, J., Luo, Z. Time-restricted release of multiple neurotrophic factors promotes axonal regeneration and functional recovery after peripheral nerve injury.
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Affiliation(s)
- Liangliang Huang
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.,Department of Orthopaedics, General Hospital of Central Theater Command of People's Liberation Army, Wuhan, China
| | - Bing Xia
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xiaowei Shi
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jianbo Gao
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yujie Yang
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Feng Xu
- Department of Orthopaedics, General Hospital of Central Theater Command of People's Liberation Army, Wuhan, China
| | - Fengyu Qi
- Department of Orthopaedics, General Hospital of Central Theater Command of People's Liberation Army, Wuhan, China
| | - Chao Liang
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jinghui Huang
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhuojing Luo
- Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
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18
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Kang WB, Chen YJ, Lu DY, Yan JZ. Folic acid contributes to peripheral nerve injury repair by promoting Schwann cell proliferation, migration, and secretion of nerve growth factor. Neural Regen Res 2019; 14:132-139. [PMID: 30531087 PMCID: PMC6263007 DOI: 10.4103/1673-5374.243718] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
After peripheral nerve injury, intraperitoneal injection of folic acid improves axon quantity, increases axon density and improves electromyography results. However, the mechanisms for this remain unclear. This study explored whether folic acid promotes peripheral nerve injury repair by affecting Schwann cell function. Primary Schwann cells were obtained from rats by in vitro separation and culture. Cell proliferation, assayed using the Cell Counting Kit-8 assay, was higher in cells cultured for 72 hours with 100 mg/L folic acid compared with the control group. Cell proliferation was also higher in the 50, 100, 150, and 200 mg/L folic acid groups compared with the control group after culture for 96 hours. Proliferation was markedly higher in the 100 mg/L folic acid group compared with the 50 mg/L folic acid group and the 40 ng/L nerve growth factor group. In Transwell assays, the number of migrated Schwann cells dramatically increased after culture with 100 and 150 mg/L folic acid compared with the control group. In nerve growth factor enzyme-linked immunosorbent assays, treatment of Schwann cell cultures with 50, 100, and 150 mg/L folic acid increased levels of nerve growth factor in the culture medium compared with the control group at 3 days. The nerve growth factor concentration of Schwann cell cultures treated with 100 mg/L folic acid group was remarkably higher than that in the 50 and 150 mg/L folic acid groups at 3 days. Nerve growth factor concentration in the 10, 50, and 100 mg/L folic acid groups was higher than that in the control group at 7 days. The nerve growth factor concentration in the 50 mg/L folic acid group was remarkably higher than that in the 10 and 100 mg/L folic acid groups at 7 days. In vivo, 80 μg/kg folic acid was intraperitoneally administrated for 7 consecutive days after sciatic nerve injury. Immunohistochemical staining showed that the number of Schwann cells in the folic acid group was greater than that in the control group. We suggest that folic acid may play a role in improving the repair of peripheral nerve injury by promoting the proliferation and migration of Schwann cells and the secretion of nerve growth factors.
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Affiliation(s)
- Wei-Bo Kang
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yong-Jie Chen
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Du-Yi Lu
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jia-Zhi Yan
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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19
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Abstract
Peripheral nerve injuries (PNI) resulting from trauma can be severe and permanently debilitating. Despite the armamentarium of meticulous microsurgical repair techniques that includes direct repair, grafting of defects with autograft nerve, and grafting with cadaveric allografts, approximately one-third of all PNI demonstrate incomplete recovery with poor restoration of function. This may include total loss or incomplete recovery of motor and/or sensory function, chronic pain, muscle atrophy, and profound weakness, which can result in lifelong morbidity. Much of this impaired nerve healing can be attributed to perineural scarring and fibrosis at the site of injury and repair. To date, this challenging clinical problem has not been adequately addressed. In this review, we summarize the existing literature surrounding biological aspects of perineural fibrosis following PNI, detail current strategies to limit nerve scarring, present our own work developing reliable nerve injury models in animal studies, and discuss potential future studies which may ultimately lead to new therapeutic strategies.
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Affiliation(s)
- Mark L Wang
- a Department of Orthopaedic Surgery, Sidney Kimmel Medical School , Thomas Jefferson University , Philadelphia , PA , USA.,b Hand Surgery Division , The Rothman Institute, at Thomas Jefferson University , Philadelphia , PA , USA
| | - Michael Rivlin
- a Department of Orthopaedic Surgery, Sidney Kimmel Medical School , Thomas Jefferson University , Philadelphia , PA , USA.,b Hand Surgery Division , The Rothman Institute, at Thomas Jefferson University , Philadelphia , PA , USA
| | - Jack G Graham
- a Department of Orthopaedic Surgery, Sidney Kimmel Medical School , Thomas Jefferson University , Philadelphia , PA , USA
| | - Pedro K Beredjiklian
- a Department of Orthopaedic Surgery, Sidney Kimmel Medical School , Thomas Jefferson University , Philadelphia , PA , USA.,b Hand Surgery Division , The Rothman Institute, at Thomas Jefferson University , Philadelphia , PA , USA
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20
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Sarker M, Naghieh S, McInnes AD, Schreyer DJ, Chen X. Regeneration of peripheral nerves by nerve guidance conduits: Influence of design, biopolymers, cells, growth factors, and physical stimuli. Prog Neurobiol 2018; 171:125-150. [DOI: 10.1016/j.pneurobio.2018.07.002] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 07/24/2018] [Accepted: 07/26/2018] [Indexed: 01/10/2023]
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21
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Soucy JR, Shirzaei Sani E, Portillo Lara R, Diaz D, Dias F, Weiss AS, Koppes AN, Koppes RA, Annabi N. Photocrosslinkable Gelatin/Tropoelastin Hydrogel Adhesives for Peripheral Nerve Repair. Tissue Eng Part A 2018; 24:1393-1405. [PMID: 29580168 PMCID: PMC6150941 DOI: 10.1089/ten.tea.2017.0502] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 03/21/2018] [Indexed: 12/29/2022] Open
Abstract
Suturing peripheral nerve transections is the predominant therapeutic strategy for nerve repair. However, the use of sutures leads to scar tissue formation, hinders nerve regeneration, and prevents functional recovery. Fibrin-based adhesives have been widely used for nerve reconstruction, but their limited adhesive and mechanical strength and inability to promote nerve regeneration hamper their utility as a stand-alone intervention. To overcome these challenges, we engineered composite hydrogels that are neurosupportive and possess strong tissue adhesion. These composites were synthesized by photocrosslinking two naturally derived polymers, gelatin-methacryloyl (GelMA) and methacryloyl-substituted tropoelastin (MeTro). The engineered materials exhibited tunable mechanical properties by varying the GelMA/MeTro ratio. In addition, GelMA/MeTro hydrogels exhibited 15-fold higher adhesive strength to nerve tissue ex vivo compared to fibrin control. Furthermore, the composites were shown to support Schwann cell (SC) viability and proliferation, as well as neurite extension and glial cell participation in vitro, which are essential cellular components for nerve regeneration. Finally, subcutaneously implanted GelMA/MeTro hydrogels exhibited slower degradation in vivo compared with pure GelMA, indicating its potential to support the growth of slowly regenerating nerves. Thus, GelMA/MeTro composites may be used as clinically relevant biomaterials to regenerate nerves and reduce the need for microsurgical suturing during nerve reconstruction.
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Affiliation(s)
- Jonathan R. Soucy
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Ehsan Shirzaei Sani
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Roberto Portillo Lara
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
- Tecnológico de Monterrey, Escuela de IngenierÍa y Ciencias, Zapopan, JAL, Mexico
| | - David Diaz
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Felipe Dias
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Anthony S. Weiss
- Charles Perkins Centre, School of Life and Environmental Sciences and Bosch Institute, University of Sydney, Sydney, Australia
| | - Abigail N. Koppes
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
- Department of Biology, Northeastern University, Boston, Massachusetts
| | - Ryan A. Koppes
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Nasim Annabi
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California
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22
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Xue J, Li H, Xia Y. Nanofiber-Based Multi-Tubular Conduits with a Honeycomb Structure for Potential Application in Peripheral Nerve Repair. Macromol Biosci 2018; 18:e1800090. [PMID: 29956466 PMCID: PMC6280973 DOI: 10.1002/mabi.201800090] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 06/07/2018] [Indexed: 12/16/2022]
Abstract
Peripheral nerve injury is a large-scale problem and it is a great challenge to repair the long lesion in a thick nerve. The design of a multi-tubular conduit with a honeycomb structure by mimicking the anatomy of a peripheral nerve for the potential repair of large defects in thick nerves has been reported. A bilayer mat of electrospun nanofibers is rolled up to form a single tube, with the inner and outer layers comprised aligned and random nanofibers, respectively. Seven such tubes are then assembled into a hexagonal array and encased within the lumen of a larger tube to form the multi-tubular conduit. By introducing an adhesive to the regions between the tubes, the conduit is robust enough for handling during surgery. The seeded bone marrow stem cells (BMSCs) are able to proliferate in all the tubes with even circumferential and longitudinal distributions. Under chemical induction, the BMSCs are transdifferentiated into Schwann-like cells in all the tubes. While the cellular version holds great promise for peripheral nerve repair, the multi-tubular conduit can also be used to investigate the fundamental aspects involved in the development of peripheral nervous system and migration of cells.
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Affiliation(s)
- Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering Georgia, Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Haoxuan Li
- The Wallace H. Coulter Department of Biomedical Engineering Georgia, Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - 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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23
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Du J, Chen H, Qing L, Yang X, Jia X. Biomimetic neural scaffolds: a crucial step towards optimal peripheral nerve regeneration. Biomater Sci 2018; 6:1299-1311. [PMID: 29725688 PMCID: PMC5978680 DOI: 10.1039/c8bm00260f] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Peripheral nerve injury is a common disease that affects more than 20 million people in the United States alone and remains a major burden to society. The current gold standard treatment for critical-sized nerve defects is autologous nerve graft transplantation; however, this method is limited in many ways and does not always lead to satisfactory outcomes. The limitations of autografts have prompted investigations into artificial neural scaffolds as replacements, and some neural scaffold devices have progressed to widespread clinical use; scaffold technology overall has yet to be shown to be consistently on a par with or superior to autografts. Recent advances in biomimetic scaffold technologies have opened up many new and exciting opportunities, and novel improvements in material, fabrication technique, scaffold architecture, and lumen surface modifications that better reflect biological anatomy and physiology have independently been shown to benefit overall nerve regeneration. Furthermore, biomimetic features of neural scaffolds have also been shown to work synergistically with other nerve regeneration therapy strategies such as growth factor supplementation, stem cell transplantation, and cell surface glycoengineering. This review summarizes the current state of neural scaffolds, highlights major advances in biomimetic technologies, and discusses future opportunities in the field of peripheral nerve regeneration.
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Affiliation(s)
- Jian Du
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Huanwen Chen
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Liming Qing
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Xiuli Yang
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Xiaofeng Jia
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
- Department of Orthopedics, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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24
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Kohn C, Klemens JM, Kascholke C, Murthy NS, Kohn J, Brandenburger M, Hacker MC. Dual-component collagenous peptide/reactive oligomer hydrogels as potential nerve guidance materials - from characterization to functionalization. Biomater Sci 2018; 4:1605-1621. [PMID: 27722483 DOI: 10.1039/c6bm00397d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Toward a new generation of improved nerve guidance conduits (NGCs), novel biomaterials are required to address pressing clinical shortcomings in peripheral nerve regeneration (PNR) and to promote biological performance. A dual-component hydrogel system formed by cross-linking reaction between maleic anhydride groups in an oligomeric building block for cross-linking of free amine functionalities in partially hydrolyzed collagen is formulated for continuous processing and NGC fabrication. The influence of the gelation base is optimized for processing from a double syringe delivery system with a static mixer. A hydrophilic low-concentrated base was introduced to control network formation and to utilize highly reactive macromers for gelation. Cross-linking extent and building block conversion were improved and homogenous monoliths were fabricated. Chemically derivatized hydrogels were obtained by conversion of a fraction of anhydride groups in the oligomeric precursor with monovalent primary amine-containing grafting molecules prior to gelation. Network stability in functionalized hydrogels was maintained and cationic moieties were implement to the gel that promoted in vitro cell attachment and spreading irrespective of mechanical stiffness. A molding strategy was introduced that allowed for fabrication of flexible tubular conduits in tunable dimensions and with chemically patterned structures. These hydrogel-based conduits hold promise for the next generation NGCs with integrated chemical cues for PNR.
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Affiliation(s)
- C Kohn
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - J M Klemens
- Fraunhofer Research Institution for Marine Biotechnology EMB, 23562 Lübeck, Germany
| | - C Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - N S Murthy
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8066, USA
| | - J Kohn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8066, USA
| | - M Brandenburger
- Fraunhofer Research Institution for Marine Biotechnology EMB, 23562 Lübeck, Germany
| | - M C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
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25
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Wieringa PA, Gonçalves de Pinho AR, Micera S, Wezel RJA, Moroni L. Biomimetic Architectures for Peripheral Nerve Repair: A Review of Biofabrication Strategies. Adv Healthc Mater 2018; 7:e1701164. [PMID: 29349931 DOI: 10.1002/adhm.201701164] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 11/13/2017] [Indexed: 12/19/2022]
Abstract
Biofabrication techniques have endeavored to improve the regeneration of the peripheral nervous system (PNS), but nothing has surpassed the performance of current clinical practices. However, these current approaches have intrinsic limitations that compromise patient care. The "gold standard" autograft provides the best outcomes but requires suitable donor material, while implantable hollow nerve guide conduits (NGCs) can only repair small nerve defects. This review places emphasis on approaches that create structural cues within a hollow NGC lumen in order to match or exceed the regenerative performance of the autograft. An overview of the PNS and nerve regeneration is provided. This is followed by an assessment of reported devices, divided into three major categories: isotropic hydrogel fillers, acting as unstructured interluminal support for regenerating nerves; fibrous interluminal fillers, presenting neurites with topographical guidance within the lumen; and patterned interluminal scaffolds, providing 3D support for nerve growth via structures that mimic native PNS tissue. Also presented is a critical framework to evaluate the impact of reported outcomes. While a universal and versatile nerve repair strategy remains elusive, outlined here is a roadmap of past, present, and emerging fabrication techniques to inform and motivate new developments in the field of peripheral nerve regeneration.
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Affiliation(s)
- Paul A. Wieringa
- Department of Complex Tissue RegenerationMERLN Institute for Technology‐Inspired Regenerative MedicineMaastricht University Universiteitssingel 40 Maastricht 6229 ER The Netherlands
| | - Ana Rita Gonçalves de Pinho
- Tissue Regeneration DepartmentMIRA InstituteUniversity of Twente Drienerlolaan 5 Enschede 7522 NB The Netherlands
| | - Silvestro Micera
- BioRobotics InstituteScuola Superiore Sant'Anna Viale Rinaldo Piaggio 34 Pontedera 56025 Italy
- Translational Neural Engineering LaboratoryEcole Polytechnique Federale de Lausanne Ch. des Mines 9 Geneva CH‐1202 Switzerland
| | - Richard J. A. Wezel
- BiophysicsDonders Institute for BrainCognition and BehaviourRadboud University Kapittelweg 29 Nijmegen 6525 EN The Netherlands
- Biomedical Signals and SystemsMIRA InstituteUniversity of Twente Drienerlolaan 5 Enschede 7522 NB The Netherlands
| | - Lorenzo Moroni
- Department of Complex Tissue RegenerationMERLN Institute for Technology‐Inspired Regenerative MedicineMaastricht University Universiteitssingel 40 Maastricht 6229 ER The Netherlands
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26
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D’Arpa S, Zabbia G, Cannizzaro C, Salimbeni G, Plescia F, Mariolo AV, Cassata G, Cicero L, Puleio R, Martorana A, Moschella F, Cordova A. Seeding nerve sutures with minced nerve-graft (MINE-G): a simple method to improve nerve regeneration in rats. Acta Chir Belg 2018; 118:27-35. [PMID: 28738725 DOI: 10.1080/00015458.2017.1353237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The aim of this study was to assess the effect of seeding the distal nerve suture with nerve fragments in rats. METHODS On 20 rats, a 15 mm sciatic nerve defect was reconstructed with a nerve autograft. In the Study Group (10 rats), a minced 1 mm nerve segment was seeded around the nerve suture. In the Control Group (10 rats), a nerve graft alone was used. At 4 and 12 weeks, a walking track analysis with open field test (WTA), hystomorphometry (number of myelinated fibers (n), fiber density (FD) and fiber area (FA) and soleus and gastrocnemius muscle weight ratios (MWR) were evaluated. The Student t-test was used for statistical analysis. RESULTS At 4 and 12 weeks the Study Group had a significantly higher n and FD (p = .043 and .033). The SMWR was significantly higher in the Study Group at 12 weeks (p = .0207). CONCLUSIONS Seeding the distal nerve suture with nerve fragments increases the number of myelinated fibers, the FD and the SMWR. The technique seems promising and deserves further investigation to clarify the mechanisms involved and its functional effects.
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Affiliation(s)
- Salvatore D’Arpa
- Plastische Heelkunde, Universitair Ziekenhuis Gent, Gent, Belgium
| | - Giovanni Zabbia
- Division of Plastic and Reconstructive Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy
| | - Carla Cannizzaro
- Department of Sciences for Health Promotion and Mother and Child Care ‘GIUSEPPE D’ALESSANDRO’, University of Palermo, Palermo, Italy
| | | | - Fulvio Plescia
- Department of Sciences for Health Promotion and Mother and Child Care ‘GIUSEPPE D’ALESSANDRO’, University of Palermo, Palermo, Italy
| | - Alessio Vincenzo Mariolo
- Division of Plastic and Reconstructive Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy
| | - Giovanni Cassata
- Laboratory Animal House/Unit, Institute of Experimental Zooprophylactic of Sicily, Palermo, Italy
| | - Luca Cicero
- Laboratory Animal House/Unit, Institute of Experimental Zooprophylactic of Sicily, Palermo, Italy
| | - Roberto Puleio
- Histopathology and Immunohistochemistry Laboratory, Institute Experimental Zooprophylactic of Sicily, Palermo, Italy
| | - Anna Martorana
- Department of Human Pathology, University of Palermo, Palermo, Italy
| | - Francesco Moschella
- Division of Plastic and Reconstructive Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy
| | - Adriana Cordova
- Division of Plastic and Reconstructive Surgery, Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy
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27
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Liu Z, Zhu S, Liu L, Ge J, Huang L, Sun Z, Zeng W, Huang J, Luo Z. A magnetically responsive nanocomposite scaffold combined with Schwann cells promotes sciatic nerve regeneration upon exposure to magnetic field. Int J Nanomedicine 2017; 12:7815-7832. [PMID: 29123395 PMCID: PMC5661463 DOI: 10.2147/ijn.s144715] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Peripheral nerve repair is still challenging for surgeons. Autologous nerve transplantation is the acknowledged therapy; however, its application is limited by the scarcity of available donor nerves, donor area morbidity, and neuroma formation. Biomaterials for engineering artificial nerves, particularly materials combined with supportive cells, display remarkable promising prospects. Schwann cells (SCs) are the absorbing seeding cells in peripheral nerve engineering repair; however, the attenuated biologic activity restricts their application. In this study, a magnetic nanocomposite scaffold fabricated from magnetic nanoparticles and a biodegradable chitosan-glycerophosphate polymer was made. Its structure was evaluated and characterized. The combined effects of magnetic scaffold (MG) with an applied magnetic field (MF) on the viability of SCs and peripheral nerve injury repair were investigated. The magnetic nanocomposite scaffold showed tunable magnetization and degradation rate. The MGs synergized with the applied MF to enhance the viability of SCs after transplantation. Furthermore, nerve regeneration and functional recovery were promoted by the synergism of SCs-loaded MGs and MF. Based on the current findings, the combined application of MGs and SCs with applied MF is a promising therapy for the engineering of peripheral nerve regeneration.
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Affiliation(s)
- Zhongyang Liu
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Shu Zhu
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Liang Liu
- Department of Orthopedics, No 161 Hospital of PLA, Wuhan, Hubei
| | - Jun Ge
- Department of Orthopedics, No 323 Hospital of PLA, Xi’an, Shaanxi
- Department of Anatomy, Fourth Military Medical University, Xi’an, Shaanxi
| | - Liangliang Huang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Zhen Sun
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Wen Zeng
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi’an, Shaanxi, People’s Republic of China
| | - Jinghui Huang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Zhuojing Luo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
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28
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Bhatnagar D, Bushman JS, Murthy NS, Merolli A, Kaplan HM, Kohn J. Fibrin glue as a stabilization strategy in peripheral nerve repair when using porous nerve guidance conduits. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:79. [PMID: 28389905 PMCID: PMC5384961 DOI: 10.1007/s10856-017-5889-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 03/25/2017] [Indexed: 06/07/2023]
Abstract
Porous conduits provide a protected pathway for nerve regeneration, while still allowing exchange of nutrients and wastes. However, pore sizes >30 µm may permit fibrous tissue infiltration into the conduit, which may impede axonal regeneration. Coating the conduit with Fibrin Glue (FG) is one option for controlling the conduit's porosity. FG is extensively used in clinical peripheral nerve repair, as a tissue sealant, filler and drug-delivery matrix. Here, we compared the performance of FG to an alternative, hyaluronic acid (HA) as a coating for porous conduits, using uncoated porous conduits and reverse autografts as control groups. The uncoated conduit walls had pores with a diameter of 60 to 70 µm that were uniformly covered by either FG or HA coatings. In vitro, FG coatings degraded twice as fast as HA coatings. In vivo studies in a 1 cm rat sciatic nerve model showed FG coating resulted in poor axonal density (993 ± 854 #/mm2), negligible fascicular area (0.03 ± 0.04 mm2), minimal percent wet muscle mass recovery (16 ± 1 in gastrocnemius and 15 ± 5 in tibialis anterior) and G-ratio (0.73 ± 0.01). Histology of FG-coated conduits showed excessive fibrous tissue infiltration inside the lumen, and fibrin capsule formation around the conduit. Although FG has been shown to promote nerve regeneration in non-porous conduits, we found that as a coating for porous conduits in vivo, FG encourages scar tissue infiltration that impedes nerve regeneration. This is a significant finding considering the widespread use of FG in peripheral nerve repair.
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Affiliation(s)
- Divya Bhatnagar
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Jared S Bushman
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
- School of Pharmacy, University of Wyoming, 1000 E University Ave Dept. 3375, Laramie, WY, 82071, USA
| | - N Sanjeeva Murthy
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Antonio Merolli
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Hilton M Kaplan
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA.
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29
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Rosso G, Liashkovich I, Young P, Röhr D, Shahin V. Schwann cells and neurite outgrowth from embryonic dorsal root ganglions are highly mechanosensitive. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:493-501. [DOI: 10.1016/j.nano.2016.06.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/06/2016] [Accepted: 06/24/2016] [Indexed: 02/02/2023]
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30
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Pinho AC, Fonseca AC, Serra AC, Santos JD, Coelho JFJ. Peripheral Nerve Regeneration: Current Status and New Strategies Using Polymeric Materials. Adv Healthc Mater 2016; 5:2732-2744. [PMID: 27600578 DOI: 10.1002/adhm.201600236] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Indexed: 12/16/2022]
Abstract
Experiments concerning peripheral nerve regeneration have been reported since the end of the 19th century. The need to implement an effective surgical procedure in terms of functional recovery has resulted in the appearance of several approaches to solve this problem. Nerve autograft was the first approach studied and is still considered the gold standard. Since autografts require donor harvesting, other strategies involving the use of natural materials have also been studied. Nevertheless, the results were not very encouraging and attention has moved towards the use of nerve conduits made from polymers, whose properties can be easily tailored and which allow the nerve conduit to be easily processed into a variety of shapes and forms. Some of these materials are already approved by the US Food and Drug Administration (FDA), as is presented here. Furthermore, polymers with conductive properties have very recently been subject to intensive study in this field, since it is believed that such properties have a positive influence in the regeneration of the new axons. This manuscript intends to give a global view of the mechanisms involved in peripheral nerve regeneration and the main strategies used to recover motor and sensorial function of injured nerves.
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Affiliation(s)
- Ana C. Pinho
- CEMUC Department of Chemical Engineering; University of Coimbra; Rua Sílvio Lima-Pólo II 3030-790 Coimbra Portugal
| | - Ana C. Fonseca
- CEMUC Department of Chemical Engineering; University of Coimbra; Rua Sílvio Lima-Pólo II 3030-790 Coimbra Portugal
| | - Arménio C. Serra
- CEMUC Department of Chemical Engineering; University of Coimbra; Rua Sílvio Lima-Pólo II 3030-790 Coimbra Portugal
| | - José D. Santos
- CEMUC Department of Metallurgical and Materials Engineering; University of Porto; Rua Dr Roberto Frias 4200-465 Porto Portugal
| | - Jorge F. J. Coelho
- CEMUC Department of Chemical Engineering; University of Coimbra; Rua Sílvio Lima-Pólo II 3030-790 Coimbra Portugal
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31
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Xu H, Zhang L, Bao Y, Yan X, Yin Y, Li Y, Wang X, Huang Z, Xu P. Preparation and characterization of injectable chitosan–hyaluronic acid hydrogels for nerve growth factor sustained release. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911516662068] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The usage of hollow nerve conduits shows inferior recovery effect on the repair of peripheral nerve defects. In this study, a biocompatible and biodegradable pH-induced injectable chitosan–hyaluronic acid hydrogel for nerve growth factor encapsulation and sustained release was developed as the fillers in the lumen of hollow nerve conduit to reform its microenvironment for peripheral nerve regeneration. The physicochemical properties of hydrogel were characterized by gelation time, Fourier transform infrared spectroscopy, scanning electron microscopy, compressive modulus, porosity, swelling ratio, and in vitro degradation. The in vitro nerve growth factor release profiles and cell evaluation were also investigated. The results show that the structure of chitosan–hyaluronic acid hydrogel is composed of interconnected channels with a controllable pore diameter ranging from 20 to 100 µm. The hydrogel can be degraded more than 70% within 8 weeks in vitro and is available for nerve growth factor sustained release. The chitosan–hyaluronic acid/nerve growth factor hydrogel is non-toxic and suitable for adhesion and proliferation of nerve cells and capable of maintaining nerve growth factor activity. Therefore, it could be a promising intraluminal filler of nerve conduits for peripheral nerve regeneration in neural tissue engineering.
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Affiliation(s)
- Haixing Xu
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, P.R. China
| | - Lingxi Zhang
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, P.R. China
| | - Yun Bao
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, P.R. China
| | - Xiumei Yan
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, P.R. China
| | - Yixia Yin
- Biomedical Materials and Engineering Research Center, Wuhan University of Technology, Wuhan, P.R. China
| | - Yiping Li
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, P.R. China
| | - Xinyu Wang
- Biomedical Materials and Engineering Research Center, Wuhan University of Technology, Wuhan, P.R. China
| | - Zhijun Huang
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, P.R. China
| | - Peihu Xu
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, P.R. China
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32
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Schirmer KSU, Gorkin R, Beirne S, Stewart E, Thompson BC, Quigley AF, Kapsa RMI, Wallace GG. Cell compatible encapsulation of filaments into 3D hydrogels. Biofabrication 2016; 8:025013. [DOI: 10.1088/1758-5090/8/2/025013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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33
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Lee YS, Griffin J, Masand SN, Shreiber DI, Uhrich KE. Salicylic acid-based poly(anhydride-ester) nerve guidance conduits: Impact of localized drug release on nerve regeneration. J Biomed Mater Res A 2016; 104:975-82. [PMID: 26691691 DOI: 10.1002/jbm.a.35630] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/05/2015] [Accepted: 12/16/2015] [Indexed: 11/10/2022]
Abstract
Nerve guidance conduits (NGCs) can serve as physical scaffolds aligning and supporting regenerating cells while preventing scar tissue formation that often interferes with the regeneration process. Numerous studies have focused on functionalizing NGCs with neurotrophic factors, for example, to support nerve regeneration over longer gaps, but few directly incorporate therapeutic agents. Herein, we fabricated NGCs from a polyanhydride comprised of salicylic acid (SA), a nonsteroidal anti-inflammatory drug, then performed in vitro and in vivo assays. In vitro studies included cytotoxicity, anti-inflammatory response, and NGC porosity measurements. To prepare for implantation, type I collagen hydrogels were used as NGC luminal fillers to further enhance the axonal regeneration process. For the in vivo studies, SA-NGCs were implanted in femoral nerves of mice for 16 weeks and evaluated for functional recovery. The SA-based NGCs functioned as both a drug delivery vehicle capable of reducing inflammation and scar tissue formation because of SA release as well as a tissue scaffold that promotes peripheral nerve regeneration and functional recovery.
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Affiliation(s)
- Yong S Lee
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey 08854
| | - Jeremy Griffin
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey 08854
| | - Shirley N Masand
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey 08854
| | - David I Shreiber
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey 08854
| | - Kathryn E Uhrich
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey 08854.,Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854
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34
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Huang L, Quan X, Liu Z, Ma T, Wu Y, Ge J, Zhu S, Yang Y, Liu L, Sun Z, Huang J, Luo Z. c-Jun gene-modified Schwann cells: upregulating multiple neurotrophic factors and promoting neurite outgrowth. Tissue Eng Part A 2016; 21:1409-21. [PMID: 25588149 DOI: 10.1089/ten.tea.2014.0416] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Genetically modified Schwann cells (SCs) that overexpress neurotrophic factors (NFs), especially those that overexpress multiple NFs, hold great potential for promoting nerve regeneration. Currently, only one NF can be upregulated in most genetically modified SCs, and simultaneously upregulating multiple NFs in SCs remains challenging. In this study, we found that the overexpression of c-Jun, a component of the AP-1 transcription factor, effectively upregulated the expression and secretion of multiple NFs, including glial cell line-derived neurotrophic factor, brain-derived neurotrophic factor, artemin, leukemia inhibitory factor, and nerve growth factor. The c-Jun gene-modified SCs showed a normal morphology in scanning electron microscopy and fluorescent staining analysis. In addition, the c-Jun-modified SCs showed enhanced proliferation and migration abilities compared with vector control cells. We used transwell chambers to establish coculture systems imitating the in vivo conditions in which transplanted SCs might influence native SCs and neurons. We found that the c-Jun-modified SCs enhanced native SC migration and promoted the proliferation of native SCs in the presence of axons. Further analysis revealed that in the c-Jun group, the average length and the total area of neurites divided by the total area of the explant body were μm 1180±25 and 6.4±0.4, respectively, which were significantly greater compared with the other groups. These findings raise the possibility of constructing an optimal therapeutic alternative for nerve repair using c-Jun-modified SCs, which have the potential to promote axonal regeneration and functional recovery by upregulating multiple NFs. In addition, these cells exhibit enhanced migration and proliferation abilities, enhance the biological functions of native SCs, and promote neurite outgrowth.
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Affiliation(s)
- Liangliang Huang
- 1 Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi, China
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Mechanical properties and permeability of porous chitosan–poly(p-dioxanone)/silk fibroin conduits used for peripheral nerve repair. J Mech Behav Biomed Mater 2015; 50:192-205. [DOI: 10.1016/j.jmbbm.2015.06.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 06/14/2015] [Accepted: 06/15/2015] [Indexed: 12/11/2022]
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Goulart CO, Lopes FRP, Monte ZO, Dantas SV, Souto A, Oliveira JT, Almeida FM, Tonda-Turo C, Pereira CC, Borges CP, Martinez AMB. Evaluation of biodegradable polymer conduits--poly(L-lactic acid)--for guiding sciatic nerve regeneration in mice. Methods 2015; 99:28-36. [PMID: 26361830 DOI: 10.1016/j.ymeth.2015.09.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 07/26/2015] [Accepted: 09/08/2015] [Indexed: 01/08/2023] Open
Abstract
Polymeric biomaterials are often used for stimulating nerve regeneration. Among different conduits, poly(lactide acid) - PLA polymer is considered to be a good substrate due to its biocompatibility and resorbable characteristics. This polymer is an aliphatic polyester which has been mostly used in biomedical application. It is an organic compound with low allergenic potential, low toxicity, high biocompatibility and predictable kinetics of degradation. In this study we fabricated and evaluated a PLA microporous hollow fiber as a conduit for its ability to bridge a nerve gap in a mouse sciatic nerve injury model. The PLA conduit was prepared from a polymer solution, throughout extrusion technique. The left sciatic nerve of C57BL/6 mouse was transected and the nerve stumps were placed into a resorbable PLA (PLA group) or a PCL conduit (PCL group), n=5 each group. We have also used another group in which the nerves were repaired by autograft (autograft group, n=5). Motor function was analyzed according to sciatic functional index (SFI). After 56days, the regenerated nerves were processed for light and electron microscopy and morphometric analyses were performed. A quantitative analysis of regenerated nerves showed significant increase in the number of myelinated fibers and blood vessels in animals that received PLA conduit. The PLA group exhibited better overall tissue organization compared to other groups. Presenting well-organized bundles, many regenerating clusters composed of preserved nerve fibers surrounded by layers of compacted perineurium-like cells. Also the SFI revealed a significant improvement in functional recovery. This work suggests that PLA conduits are suitable substrate for cell survival and it provides an effective strategy to be used to support axonal growth becoming a potential alternative to autograft.
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Affiliation(s)
- Camila Oliveira Goulart
- Pós Graduação em Anatomia Patológica, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil; Laboratório de Neurodegeneração e Reparo, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil
| | | | - Zulmira Oliveira Monte
- Laboratório de Neurodegeneração e Reparo, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil; Departamento de Morfologia, UFPI, Piauí, PI, Brazil
| | - Severino Valentim Dantas
- Pós Graduação em Anatomia Patológica, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil
| | - Allana Souto
- Laboratório de Neurodegeneração e Reparo, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil
| | - Júlia Teixeira Oliveira
- Laboratório de Neurodegeneração e Reparo, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil
| | - Fernanda Martins Almeida
- Laboratório de Neurodegeneração e Reparo, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil; Pólo Universitário Macaé, UFRJ, Macaé, RJ, Brazil
| | | | | | | | - Ana Maria Blanco Martinez
- Pós Graduação em Anatomia Patológica, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil; Laboratório de Neurodegeneração e Reparo, Faculdade de Medicina, HUCFF, UFRJ, Rio de Janeiro, RJ, Brazil.
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Mu Y, Wu F, Lu Y, Wei L, Yuan W. Progress of electrospun fibers as nerve conduits for neural tissue repair. Nanomedicine (Lond) 2015; 9:1869-83. [PMID: 25325242 DOI: 10.2217/nnm.14.70] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nerve tissue regeneration approaches have gained much attention in recent years, and nerve conduits (NCs), which facilitate nerve tissue regeneration, have become an attractive alternative to nerve autologous graft. Several methods are proposed to fabricate NCs, including electrospinning, which is a widely used approach for NCs and other tissue scaffolds, and has advantages such as the ability to control the thickness, diameter and porosity of fibers, as well as its simple experimental set up. This article gives an overview of electrospun fibers for nerve conduits utilized in peripheral and central nerve regeneration. Natural and synthetic materials with different mechanical strength, degradation rates and biocompatibility are proposed. Several bioactive proteins that can help the process of nerve regeneration are introduced. Finally, some approaches to control the morphology of electrospun fibers and to deliver bioactive proteins are discussed in detail.
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Affiliation(s)
- Ying Mu
- School of Pharmacy, Shanghai JiaoTong University, Shanghai 200240, PR China
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de Luca AC, Lacour SP, Raffoul W, di Summa PG. Extracellular matrix components in peripheral nerve repair: how to affect neural cellular response and nerve regeneration? Neural Regen Res 2015; 9:1943-8. [PMID: 25598773 PMCID: PMC4283273 DOI: 10.4103/1673-5374.145366] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2014] [Indexed: 01/09/2023] Open
Abstract
Peripheral nerve injury is a serious problem affecting significantly patients’ life. Autografts are the “gold standard” used to repair the injury gap, however, only 50% of patients fully recover from the trauma. Artificial conduits are a valid alternative to repairing peripheral nerve. They aim at confining the nerve environment throughout the regeneration process, and providing guidance to axon outgrowth. Biocompatible materials have been carefully designed to reduce inflammation and scar tissue formation, but modifications of the inner lumen are still required in order to optimise the scaffolds. Biomicking the native neural tissue with extracellular matrix fillers or coatings showed great promises in repairing longer gaps and extending cell survival. In addition, extracellular matrix molecules provide a platform to further bind growth factors that can be released in the system over time. Alternatively, conduit fillers can be used for cell transplantation at the injury site, reducing the lag time required for endogenous Schwann cells to proliferate and take part in the regeneration process. This review provides an overview on the importance of extracellular matrix molecules in peripheral nerve repair.
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Affiliation(s)
- Alba C de Luca
- EPFL, Centre for Neuroprosthetics, Laboratory for Soft Bioelectronic Interfaces, Station 17, 1015 Lausanne, Switzerland
| | - Stephanie P Lacour
- EPFL, Centre for Neuroprosthetics, Laboratory for Soft Bioelectronic Interfaces, Station 17, 1015 Lausanne, Switzerland
| | - Wassim Raffoul
- Department of Plastic, Reconstructive and Hand Surgery, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Pietro G di Summa
- Department of Plastic, Reconstructive and Hand Surgery, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
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Three-dimensional biomaterial degradation — Material choice, design and extrinsic factor considerations. Biotechnol Adv 2014; 32:984-99. [DOI: 10.1016/j.biotechadv.2014.04.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 04/18/2014] [Accepted: 04/30/2014] [Indexed: 11/20/2022]
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Shakhbazau A, Archibald SJ, Shcharbin D, Bryszewska M, Midha R. Aligned collagen-GAG matrix as a 3D substrate for Schwann cell migration and dendrimer-based gene delivery. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1979-1989. [PMID: 24801062 DOI: 10.1007/s10856-014-5224-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 04/21/2014] [Indexed: 06/03/2023]
Abstract
The development of artificial off-the-shelf conduits that facilitate effective nerve regeneration and recovery after repair of traumatic nerve injury gaps is of fundamental importance. Collagen-glycosaminoglycan (GAG) matrix mimicking Schwann cell (SC) basal lamina has been proposed as a suitable and biologically rational substrate for nerve regeneration. In the present study, we have focused on the permissiveness of this matrix type for SC migration and repopulation, as these events play an essential role in nerve remodeling. We have also demonstrated that SCs cultured within collagen-GAG matrix are compatible with non-viral dendrimer-based gene delivery, that may allow conditioning of matrix-embedded cells for future gene therapy applications.
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Affiliation(s)
- Antos Shakhbazau
- Department of Clinical Neuroscience, Faculty of Medicine, University of Calgary, HMRB 109-3330 Hospital Drive NW, Calgary, AB, T2N4N1, Canada,
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Ramburrun P, Kumar P, Choonara YE, Bijukumar D, du Toit LC, Pillay V. A review of bioactive release from nerve conduits as a neurotherapeutic strategy for neuronal growth in peripheral nerve injury. BIOMED RESEARCH INTERNATIONAL 2014; 2014:132350. [PMID: 25143934 PMCID: PMC4131113 DOI: 10.1155/2014/132350] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 05/04/2014] [Indexed: 02/07/2023]
Abstract
Peripheral nerve regeneration strategies employ the use of polymeric engineered nerve conduits encompassed with components of a delivery system. This allows for the controlled and sustained release of neurotrophic growth factors for the enhancement of the innate regenerative capacity of the injured nerves. This review article focuses on the delivery of neurotrophic factors (NTFs) and the importance of the parameters that control release kinetics in the delivery of optimal quantities of NTFs for improved therapeutic effect and prevention of dose dumping. Studies utilizing various controlled-release strategies, in attempt to obtain ideal release kinetics, have been reviewed in this paper. Release strategies discussed include affinity-based models, crosslinking techniques, and layer-by-layer technologies. Currently available synthetic hollow nerve conduits, an alternative to the nerve autografts, have proven to be successful in the bridging and regeneration of primarily the short transected nerve gaps in several patient cases. However, current research emphasizes on the development of more advanced nerve conduits able to simulate the effectiveness of the autograft which includes, in particular, the ability to deliver growth factors.
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Affiliation(s)
- Poornima Ramburrun
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Yahya E. Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Divya Bijukumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Lisa C. du Toit
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
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Carriel V, Alaminos M, Garzón I, Campos A, Cornelissen M. Tissue engineering of the peripheral nervous system. Expert Rev Neurother 2014; 14:301-18. [DOI: 10.1586/14737175.2014.887444] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Georgiou M, Bunting SC, Davies HA, Loughlin AJ, Golding JP, Phillips JB. Engineered neural tissue for peripheral nerve repair. Biomaterials 2013; 34:7335-43. [DOI: 10.1016/j.biomaterials.2013.06.025] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 06/12/2013] [Indexed: 11/30/2022]
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Medical applications of biopolyesters polyhydroxyalkanoates. CHINESE JOURNAL OF POLYMER SCIENCE 2013. [DOI: 10.1007/s10118-013-1280-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Mohtaram NK, Montgomery A, Willerth SM. Biomaterial-based drug delivery systems for the controlled release of neurotrophic factors. Biomed Mater 2013; 8:022001. [DOI: 10.1088/1748-6041/8/2/022001] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nan J, Hu X, Li H, Zhang X, Piao R. Use of nerve conduits for peripheral nerve injury repair: A Web of Science-based literature analysis. Neural Regen Res 2012; 7:2826-33. [PMID: 25317133 PMCID: PMC4190865 DOI: 10.3969/j.issn.1673-5374.2012.35.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 11/02/2012] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE: To identify global research trends in the use of nerve conduits for peripheral nerve injury repair. DATA RETRIEVAL: Numerous basic and clinical studies on nerve conduits for peripheral nerve injury repair were performed between 2002–2011. We performed a bibliometric analysis of the institutions, authors, and hot topics in the field, from the Web of Science, using the key words peripheral nerve and conduit or tube. SELECTION CRITERIA: Inclusion criteria: peer-reviewed published articles on nerve conduits for peripheral nerve injury repair, indexed in the Web of Science; original research articles, reviews, meeting abstracts, proceedings papers, book chapters, editorial material, and news items. Exclusion criteria: articles requiring manual searching or telephone access; documents not published in the public domain; and several corrected papers. MAIN OUTCOME MEASURES: (a) Annual publication output; (b) publication type; (c) publication by research field; (d) publication by journal; (e) publication by funding agency; (f) publication by author; (g) publication by country and institution; (h) publications by institution in China; (i) most-cited papers. RESULTS: A total of 793 publications on the use of nerve conduits for peripheral nerve injury repair were retrieved from the Web of Science between 2002–2011. The number of publications gradually increased over the 10-year study period. Articles constituted the main type of publication. The most prolific journals were Biomaterials, Microsurgery, and Journal of Biomedical Materials Research Part A. The National Natural Science Foundation of China supported 27 papers, more than any other funding agency. Of the 793 publications, almost half came from American and Chinese authors and institutions. CONCLUSION: Nerve conduits have been studied extensively for peripheral nerve regeneration; however, many problems remain in this field, which are difficult for researchers to reach a consensus.
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Affiliation(s)
- Jinniang Nan
- Department of General Surgery, Second People's Hospital of Panjin, Panjin 124000, Liaoning Province, China
| | - Xuguang Hu
- Department of General Surgery, Second People's Hospital of Panjin, Panjin 124000, Liaoning Province, China
| | - Hongxiu Li
- Department of General Surgery, Second People's Hospital of Panjin, Panjin 124000, Liaoning Province, China
| | - Xiaonong Zhang
- Department of General Surgery, Second People's Hospital of Panjin, Panjin 124000, Liaoning Province, China
| | - Renjing Piao
- Department of General Surgery, Second People's Hospital of Panjin, Panjin 124000, Liaoning Province, China
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Tan A, Rajadas J, Seifalian AM. Biochemical engineering nerve conduits using peptide amphiphiles. J Control Release 2012; 163:342-52. [PMID: 22910143 DOI: 10.1016/j.jconrel.2012.08.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 08/05/2012] [Accepted: 08/07/2012] [Indexed: 12/30/2022]
Abstract
Peripheral nerve injury is a debilitating condition. The gold standard for treatment is surgery, requiring an autologous nerve graft. Grafts are harvested from another part of the body (a secondary site) to treat the affected primary area. However, autologous nerve graft harvesting is not without risks, with associated problems including injury to the secondary site. Research into biomaterials has engendered the use of bioartificial nerve conduits as an alternative to autologous nerve grafts. These include synthetic and artificial materials, which can be manufactured into nerve conduits using techniques inspired by nanotechnology. Recent evidence indicates that peptide amphiphiles (PAs) are promising candidates for use as materials for bioengineering nerve conduits. PAs are biocompatible and biodegradable protein-based nanomaterials, capable of self-assembly in aqueous solutions. Their self-assembly system, coupled with their intrinsic capacity for carrying bioactive epitopes for tissue regeneration, form particularly novel attributes for biochemically-engineered materials. Furthermore, PAs can function as biomimetic materials and advanced drug delivery platforms for sustained and controlled release of a plethora of therapeutic agents. Here we review the realm of nerve conduit tissue engineering and the potential for PAs as viable materials in this exciting and rapidly advancing field.
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Affiliation(s)
- Aaron Tan
- Centre for Nanotechnology & Regenerative Medicine, UCL Division of Surgery & Interventional Science, University College London, London, UK
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Fibrin conduit supplemented with human mesenchymal stem cells and immunosuppressive treatment enhances regeneration after peripheral nerve injury. Neurosci Lett 2012; 516:171-6. [PMID: 22465323 DOI: 10.1016/j.neulet.2012.03.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 02/28/2012] [Accepted: 03/14/2012] [Indexed: 12/21/2022]
Abstract
To address the need for the development of bioengineered replacement of a nerve graft, a novel two component fibrin glue conduit was combined with human mesenchymal stem cells (MSC) and immunosupressive treatment with cyclosporine A. The effects of MSC on axonal regeneration in the conduit and reaction of activated macrophages were investigated using sciatic nerve injury model. A 10mm gap in the sciatic nerve of a rat was created and repaired either with fibrin glue conduit containing diluted fibrin matrix or fibrin glue conduit containing fibrin matrix with MSC at concentration of 80×10(6) cells/ml. Cells were labeled with PKH26 prior to transplantation. The animals received daily injections of cyclosporine A. After 3 weeks the distance of regeneration and area occupied by regenerating axons and ED1 positives macrophages was measured. MSC survived in the conduit and enhanced axonal regeneration only when transplantation was combined with cyclosporine A treatment. Moreover, addition of cyclosporine A to the conduits with transplanted MSC significantly reduced the ED1 macrophage reaction.
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