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Ma D, Fu C, Li F, Ruan R, Lin Y, Li X, Li M, Zhang J. Functional biomaterials for modulating the dysfunctional pathological microenvironment of spinal cord injury. Bioact Mater 2024; 39:521-543. [PMID: 38883317 PMCID: PMC11179178 DOI: 10.1016/j.bioactmat.2024.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 04/13/2024] [Accepted: 04/14/2024] [Indexed: 06/18/2024] Open
Abstract
Spinal cord injury (SCI) often results in irreversible loss of sensory and motor functions, and most SCIs are incurable with current medical practice. One of the hardest challenges in treating SCI is the development of a dysfunctional pathological microenvironment, which mainly comprises excessive inflammation, deposition of inhibitory molecules, neurotrophic factor deprivation, glial scar formation, and imbalance of vascular function. To overcome this challenge, implantation of functional biomaterials at the injury site has been regarded as a potential treatment for modulating the dysfunctional microenvironment to support axon regeneration, remyelination at injury site, and functional recovery after SCI. This review summarizes characteristics of dysfunctional pathological microenvironment and recent advances in biomaterials as well as the technologies used to modulate inflammatory microenvironment, regulate inhibitory microenvironment, and reshape revascularization microenvironment. Moreover, technological limitations, challenges, and future prospects of functional biomaterials to promote efficient repair of SCI are also discussed. This review will aid further understanding and development of functional biomaterials to regulate pathological SCI microenvironment.
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Affiliation(s)
- Dezun Ma
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou, Fujian, 350122, PR China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122, PR China
| | - Changlong Fu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou, Fujian, 350122, PR China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122, PR China
| | - Fenglu Li
- College of Chemical Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou, 350108, PR China
- Qingyuan Innovation Laboratory, 1 Xueyuan Road, Quanzhou, 362801, PR China
| | - Renjie Ruan
- College of Chemical Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou, 350108, PR China
- Qingyuan Innovation Laboratory, 1 Xueyuan Road, Quanzhou, 362801, PR China
| | - Yanming Lin
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou, Fujian, 350122, PR China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122, PR China
| | - Xihai Li
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou, Fujian, 350122, PR China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122, PR China
| | - Min Li
- Fujian Children's Hospital, Fujian Branch of Shanghai Children's Medical Center, 966 Hengyu Road, Fuzhou, 350014, PR China
- Fujian Maternity and Child Health Hospital, 111 Daoshan Road, Fuzhou, 350005, PR China
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, 111 Daoshan Road, Fuzhou, 350005, PR China
| | - Jin Zhang
- College of Chemical Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou, 350108, PR China
- Qingyuan Innovation Laboratory, 1 Xueyuan Road, Quanzhou, 362801, PR China
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Li Q, Gao S, Qi Y, Shi N, Wang Z, Saiding Q, Chen L, Du Y, Wang B, Yao W, Sarmento B, Yu J, Lu Y, Wang J, Cui W. Regulating Astrocytes via Short Fibers for Spinal Cord Repair. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2406742. [PMID: 39120009 DOI: 10.1002/advs.202406742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/11/2024] [Indexed: 08/10/2024]
Abstract
Reactive astrogliosis is the main cause of secondary injury to the central nerves. Biomaterials can effectively suppress astrocyte activation, but the mechanism remains unclear. Herein, Differentially Expressed Genes (DEGs) are identified through whole transcriptome sequencing in a mouse model of spinal cord injury, revealing the VIM gene as a pivotal regulator in the reactive astrocytes. Moreover, DEGs are predominantly concentrated in the extracellular matrix (ECM). Based on these, 3D injectable electrospun short fibers are constructed to inhibit reactive astrogliosis. Histological staining and functional analysis indicated that fibers with unique 3D network spatial structures can effectively constrain the reactive astrocytes. RNA sequencing and single-cell sequencing results reveal that short fibers downregulate the expression of the VIM gene in astrocytes by modulating the "ECM receptor interaction" pathway, inhibiting the transcription of downstream Vimentin protein, and thereby effectively suppressing reactive astrogliosis. Additionally, fibers block the binding of Vimentin protein with inflammation-related proteins, downregulate the NF-κB signaling pathway, inhibit neuron apoptosis, and consequently promote the recovery of spinal cord neural function. Through mechanism elucidation-material design-feedback regulation, this study provides a detailed analysis of the mechanism chain by which short fibers constrain the abnormal spatial expansion of astrocytes and promote spinal cord neural function.
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Affiliation(s)
- Qianyi Li
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
- Department of Emergency, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, P. R. China
- Pˆole Sino-Franc¸ais de Recherches en Sciences du Vivant et G´enomique, Shanghai, 200025, P. R. China
- International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Cote d'Azur University, Shanghai, 200025, P. R. China
| | - Shuaiyun Gao
- Department of Emergency, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, P. R. China
- Pˆole Sino-Franc¸ais de Recherches en Sciences du Vivant et G´enomique, Shanghai, 200025, P. R. China
- International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Cote d'Azur University, Shanghai, 200025, P. R. China
| | - Yang Qi
- Department of Emergency, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, P. R. China
| | - Nuo Shi
- Peterson's Lab, Shanghai, 200030, P. R. China
| | | | - Qimanguli Saiding
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Liang Chen
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Yawei Du
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Bo Wang
- Pˆole Sino-Franc¸ais de Recherches en Sciences du Vivant et G´enomique, Shanghai, 200025, P. R. China
- International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Cote d'Azur University, Shanghai, 200025, P. R. China
| | - Wenfei Yao
- Department of Emergency, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, P. R. China
| | - Bruno Sarmento
- I3-Instituto de Investigação e Inovação Em Saúde and INEB-Instituto de Engenharia Biomédica, Universidade Do Porto, Rua Alfredo Allen 208, Porto, 4200-135, Portugal
- IUCS-Instituto Universitário de Ciências da Saúde, CESPU, Rua Central de Gandra 1317, Gandra, 4585-116, Portugal
| | - Jie Yu
- Department of Emergency, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, P. R. China
| | - Yiming Lu
- Department of Emergency, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, P. R. China
- Pˆole Sino-Franc¸ais de Recherches en Sciences du Vivant et G´enomique, Shanghai, 200025, P. R. China
- International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Cote d'Azur University, Shanghai, 200025, P. R. China
- Division of Critical Care, Nanxiang Hospital of Jiading District, Shanghai, 201802, P. R. China
| | - Juan Wang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
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Wang Z, Li J, Xu T, Guo B, Xie Z, Li M. The Efficacy of Different Material Scaffold-Guided Cell Transplantation in the Treatment of Spinal Cord Injury in Rats: A Systematic Review and Network Meta-analysis. Cell Mol Neurobiol 2024; 44:43. [PMID: 38703332 PMCID: PMC11069479 DOI: 10.1007/s10571-024-01465-6] [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: 12/17/2023] [Accepted: 02/23/2024] [Indexed: 05/06/2024]
Abstract
Cell transplantation is a promising treatment option for spinal cord injury (SCI). However, there is no consensus on the choice of carrier scaffolds to host the cells. This study aims to evaluate the efficacy of different material scaffold-mediated cell transplantation in treating SCI in rats. According to PRISMA's principle, Embase, PubMed, Web of Science, and Cochrane databases were searched, and relevant literature was referenced. Only original research on cell transplantation plus natural or synthetic scaffolds in SCI rats was included. Direct and indirect evidence for improving hind limb motor function was pooled through meta-analysis. A subgroup analysis of some factors that may affect the therapeutic effect was conducted to understand the results fully. In total, 25 studies met the inclusion criteria, in which 293 rats received sham surgery, 78 rats received synthetic material scaffolds, and 219 rats received natural materials scaffolds. The network meta-analysis demonstrated that although synthetic scaffolds were slightly inferior to natural scaffolds in terms of restoring motor function in cell transplantation of SCI rats, no statistical differences were observed between the two (MD: -0.35; 95% CI -2.6 to 1.9). Moreover, the subgroup analysis revealed that the type and number of cells may be important factors in therapeutic efficacy (P < 0.01). Natural scaffolds and synthetic scaffolds are equally effective in cell transplantation of SCI rats without significant differences. In the future, the findings need to be validated in multicenter, large-scale, randomized controlled trials in clinical practice. Trial registration: Registration ID CRD42024459674 (PROSPERO).
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Affiliation(s)
- Zhihua Wang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No.17, Yongwai Street, Nanchang, 330006, Jiangxi Province, China
- Postdoctoral Innovation Practice Base, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Jun Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No.17, Yongwai Street, Nanchang, 330006, Jiangxi Province, China
- Department of the Second Clinical Medical College of Nanchang University, No.460, BaYi Street, Nanchang, 330006, Jiangxi Province, China
| | - Tianqi Xu
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No.17, Yongwai Street, Nanchang, 330006, Jiangxi Province, China
- Department of the Second Clinical Medical College of Nanchang University, No.460, BaYi Street, Nanchang, 330006, Jiangxi Province, China
| | - Boyu Guo
- Department of the First Clinical Medical College of Nanchang University, No.460, BaYi Street, Nanchang, 330006, Jiangxi Province, China
| | - Zhiping Xie
- Department of Neurosurgery, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, No.152 Aiguo Road, Nanchang, 330006, Jiangxi Province, China.
- Department of Neurosurgery, Xiangya Hospital Jiangxi Hospital, Central South University, Nanchang, Jiangxi Province, China.
| | - Meihua Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No.17, Yongwai Street, Nanchang, 330006, Jiangxi Province, China.
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Wu Z, Zhou Y, Hou X, Liu W, Yin W, Wang L, Cao Y, Jiang Z, Guo Y, Chen Q, Xie W, Wang Z, Shi N, Liu Y, Gao X, Luo L, Dai J, Ren C, Jiang X. Construction of functional neural network tissue combining CBD-NT3-modified linear-ordered collagen scaffold and TrkC-modified iPSC-derived neural stem cells for spinal cord injury repair. Bioact Mater 2024; 35:242-258. [PMID: 38333615 PMCID: PMC10850738 DOI: 10.1016/j.bioactmat.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/17/2023] [Accepted: 01/13/2024] [Indexed: 02/10/2024] Open
Abstract
Induced pluripotent stem cells (iPSCs) can be personalized and differentiated into neural stem cells (NSCs), thereby effectively providing a source of transplanted cells for spinal cord injury (SCI). To further improve the repair efficiency of SCI, we designed a functional neural network tissue based on TrkC-modified iPSC-derived NSCs and a CBD-NT3-modified linear-ordered collagen scaffold (LOCS). We confirmed that transplantation of this tissue regenerated neurons and synapses, improved the microenvironment of the injured area, enhanced remodeling of the extracellular matrix, and promoted functional recovery of the hind limbs in a rat SCI model with complete transection. RNA sequencing and metabolomic analyses also confirmed the repair effect of this tissue from multiple perspectives and revealed its potential mechanism for treating SCI. Together, we constructed a functional neural network tissue using human iPSCs-derived NSCs as seed cells based on the interaction of receptors and ligands for the first time. This tissue can effectively improve the therapeutic effect of SCI, thus confirming the feasibility of human iPSCs-derived NSCs and LOCS for SCI repair and providing a valuable direction for SCI research.
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Affiliation(s)
- Zhaoping Wu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
| | - Yi Zhou
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
| | - Xianglin Hou
- State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Weidong Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- School of Basic Medical Science, Central South University, Changsha, Hunan Province, 410078, China
- The NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan Province, 410078, China
| | - Wen Yin
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
| | - Lei Wang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- School of Basic Medical Science, Central South University, Changsha, Hunan Province, 410078, China
- The NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan Province, 410078, China
| | - Yudong Cao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
| | - Zhipeng Jiang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
| | - Youwei Guo
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
| | - Quan Chen
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
| | - Wen Xie
- School of Basic Medical Science, Central South University, Changsha, Hunan Province, 410078, China
- The NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan Province, 410078, China
| | - Ziqiang Wang
- College of Biology, Hunan University, Changsha, 410000, China
| | - Ning Shi
- School of Basic Medical Science, Central South University, Changsha, Hunan Province, 410078, China
- The NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan Province, 410078, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100080, China
| | - Yujun Liu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100080, China
| | - Xiang Gao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100080, China
| | - Longlong Luo
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100080, China
| | - Jianwu Dai
- State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Caiping Ren
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- School of Basic Medical Science, Central South University, Changsha, Hunan Province, 410078, China
- The NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan Province, 410078, China
| | - Xingjun Jiang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China
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Hashimoto S, Nagoshi N, Nakamura M, Okano H. Regenerative medicine strategies for chronic complete spinal cord injury. Neural Regen Res 2024; 19:818-824. [PMID: 37843217 PMCID: PMC10664101 DOI: 10.4103/1673-5374.382230] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/30/2023] [Accepted: 06/27/2023] [Indexed: 10/17/2023] Open
Abstract
Spinal cord injury is a condition in which the parenchyma of the spinal cord is damaged by trauma or various diseases. While rapid progress has been made in regenerative medicine for spinal cord injury that was previously untreatable, most research in this field has focused on the early phase of incomplete injury. However, the majority of patients have chronic severe injuries; therefore, treatments for these situations are of fundamental importance. The reason why the treatment of complete spinal cord injury has not been studied is that, unlike in the early stage of incomplete spinal cord injury, there are various inhibitors of neural regeneration. Thus, we assumed that it is difficult to address all conditions with a single treatment in chronic complete spinal cord injury and that a combination of several treatments is essential to target severe pathologies. First, we established a combination therapy of cell transplantation and drug-releasing scaffolds, which contributes to functional recovery after chronic complete transection spinal cord injury, but we found that functional recovery was limited and still needs further investigation. Here, for the further development of the treatment of chronic complete spinal cord injury, we review the necessary approaches to the different pathologies based on our findings and the many studies that have been accumulated to date and discuss, with reference to the literature, which combination of treatments is most effective in achieving functional recovery.
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Affiliation(s)
- Shogo Hashimoto
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Narihito Nagoshi
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Masaya Nakamura
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
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Kuan YC, Lin SZ, Chiu TL, Hung HY. Improved neurological function in a patient with complete spinal cord injury through bone marrow mesenchymal stem cells implantation: a case report. Regen Med 2023; 18:907-911. [PMID: 37990874 DOI: 10.2217/rme-2023-0120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023] Open
Abstract
Aim: Spinal cord injury (SCI) can cause severe disability. Several clinical trials of stem-cell based therapies are ongoing. We describe our experience of bone marrow mesenchymal stem cell (BMSC) therapy in a patient with complete SCI in the chronic stage. Case report: A 25-year-old man with complete SCI at T6 level presented with paraplegia for 5 years. We transplanted autologous BMSCs intramedullary. After 12 months follow-up, his Barthel index score was noticeably improved from severe to moderate dependency, and the sensation level improved from T7 to S5, but no improvement of motor function. Conclusion: Autologous BMSCs are potentially safe for patients with complete SCI in the chronic stage and may improve neurological function and quality of life.
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Affiliation(s)
- Ying-Chuan Kuan
- Department of Neurosurgery, Hualien Tzu Chi Hospital, Hualien, 970, Taiwan
- Institute of Medical Sciences, Tzu Chi University, Hualien, 970, Taiwan
| | - Shinn-Zong Lin
- Department of Neurosurgery, Hualien Tzu Chi Hospital, Hualien, 970, Taiwan
- Institute of Medical Sciences, Tzu Chi University, Hualien, 970, Taiwan
- Bioinnovation Center, Tzu Chi Foundation, Hualien, 970, Taiwan
| | - Tsung-Lang Chiu
- Department of Neurosurgery, Hualien Tzu Chi Hospital, Hualien, 970, Taiwan
- Institute of Medical Sciences, Tzu Chi University, Hualien, 970, Taiwan
| | - Hsiang-Yi Hung
- Department of Neurosurgery, Hualien Tzu Chi Hospital, Hualien, 970, Taiwan
- Institute of Medical Sciences, Tzu Chi University, Hualien, 970, Taiwan
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Wang S, Wang R, Chen J, Yang B, Shu J, Cheng F, Tao Y, Shi K, Wang C, Wang J, Xia K, Zhang Y, Chen Q, Liang C, Tang J, Li F. Controlled extracellular vesicles release from aminoguanidine nanoparticle-loaded polylysine hydrogel for synergistic treatment of spinal cord injury. J Control Release 2023; 363:27-42. [PMID: 37722419 DOI: 10.1016/j.jconrel.2023.09.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/20/2023]
Abstract
Pharmaceutical treatments are critical for the acute and subacute phases of spinal cord injury (SCI) and significantly impact patients' prognoses. However, there is a lack of a precise, multitemporal, integrated drug delivery system for medications administered in both phases. In this study, we prepare a hybrid polylysine-based hydrogel (PBHEVs@AGN) comprising short-term release of pH-responsive aminoguanidine nanoparticles (AGN) and sustained release of extracellular vesicles (EVs) for synergistic SCI treatment. When AGN is exposed to the acidic environment at the injury site, it quickly diffuses out of the hydrogel and releases the majority of the aminoguanidine within 24 h, reducing oxidative stress in lesion tissues. Enriched EVs are gradually released from the hydrogel and remain in the tissue for weeks, providing a long-term anti-inflammatory effect and further ensuring axonal regeneration. Fast-releasing aminoguanidine can cooperate with slow-release EVs to treat SCI more effectively by reducing the production of proinflammatory cytokines and blocking the TLR4/Myd88/NF-κB inflammatory pathway, creating a sustained anti-inflammatory microenvironment for SCI recovery. Our in vivo experiments demonstrate that PBHEVs@AGN reduces the occurrence of scar tissue, encourages remyelination, and speeds up axonal regeneration. Herein, this multi-drug delivery system, which combines the acute release of aminoguanidine and the sustained release of EVs is highly effective for synergistically managing the challenging pathological processes after SCI.
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Affiliation(s)
- Shaoke Wang
- Department of Orthopedics, Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji University, Shanghai 200065, PR China
| | - Rui Wang
- Key Laboratory of Smart Biomaterials of Zhejiang Province, Collage of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, PR China
| | - Jiangjie Chen
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Biao Yang
- Qiandongnan Prefecture People's Hospital, Kaili 556000, Guizhou, PR China
| | - Jiawei Shu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Feng Cheng
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Yiqing Tao
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Kesi Shi
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Chenggui Wang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, PR China
| | - Jingkai Wang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Kaishun Xia
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Yuang Zhang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Qixin Chen
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Chengzhen Liang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China.
| | - Jianbin Tang
- Key Laboratory of Smart Biomaterials of Zhejiang Province, Collage of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, PR China.
| | - Fangcai Li
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China.
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8
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Zheng B, Kuang Y, Yuan D, Huang H, Liu S. The research landscape of immunology research in spinal cord injury from 2012 to 2022. JOR Spine 2023; 6:e1261. [PMID: 37780822 PMCID: PMC10540832 DOI: 10.1002/jsp2.1261] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 03/21/2023] [Accepted: 04/30/2023] [Indexed: 10/03/2023] Open
Abstract
Background Spinal cord injury (SCI) is defined as traumatic damage to the spinal cord, affecting over three million patients worldwide, and there is still no treatment for the injured spinal cord itself. In recent years, immunology research on SCI has been published in various journals. Methods To systematically analyze the research hotspots and dynamic scientific developments of immunology research in SCI, we conducted a bibliometric and knowledge map analysis to help researchers gain a global perspective in this research field. Results The bibliometric study we completed included 1788 English-language papers published in 553 journals by 8861 authors from 1901 institutions in 66 countries/regions. Based on the references and keyword analysis, researchers in the past 10 years have mainly focused on the research directions of "monocyte chemoattractor protein 1," "nitric oxide," "pain," and "nitric oxide synthase" related to immunological research in SCI. However, with the development of other new directions such as "extracellular vesicles" (2019-2022), "Regenerative medicine" (2019-2022), "stromal cells" (2018-2022), "motor recovery" (2019-2022), and "glial activation" (2019-2022). Researchers prefer to study the application of regenerative strategies in SCI, the mechanism of extracellular vesicles in the development of SCI, the activation of spinal glial cells in SCI, and the pathways of motor recovery. This bibliometric analysis of immunology research in SCI summarizes the current status of this research field. The relationship between extracellular vesicles, regenerative medicine, stromal cells, motor recovery, and glial activation is currently a major research frontier. Further research and cooperation worldwide need to be enhanced. Conclusion We believe that our research can help researchers quickly grasp the current hotspot of immunology research in SCI and determine a new direction for future research.
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Affiliation(s)
- Bowen Zheng
- Department of Musculoskeletal Tumor, People's HospitalPeking UniversityBeijingChina
- Beijing Key Laboratory of Musculoskeletal TumorBeijingPeople's Republic of China
| | - Yirui Kuang
- Department of NeurosurgeryXiangya Hospital, Central South UniversityChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Dun Yuan
- Department of NeurosurgeryXiangya Hospital, Central South UniversityChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Haoxuan Huang
- Department of NeurosurgeryXiangya Hospital, Central South UniversityChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Songlin Liu
- Department of NeurosurgeryXiangya Hospital, Central South UniversityChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
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9
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Feng T, Zhao C, Rao JS, Guo XJ, Bao SS, He LW, Zhao W, Liu Z, Yang ZY, Li XG. Different macaque brain network remodeling after spinal cord injury and NT3 treatment. iScience 2023; 26:106784. [PMID: 37378337 PMCID: PMC10291247 DOI: 10.1016/j.isci.2023.106784] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 03/08/2023] [Accepted: 04/26/2023] [Indexed: 06/29/2023] Open
Abstract
Graph theory-based analysis describes the brain as a complex network. Only a few studies have examined modular composition and functional connectivity (FC) between modules in patients with spinal cord injury (SCI). Little is known about the longitudinal changes in hubs and topological properties at the modular level after SCI and treatment. We analyzed differences in FC and nodal metrics reflecting modular interaction to investigate brain reorganization after SCI-induced compensation and neurotrophin-3 (NT3)-chitosan-induced regeneration. Mean inter-modular FC and participation coefficient of areas related to motor coordination were significantly higher in the treatment animals than in the SCI-only ones at the late stage. The magnocellular part of the red nucleus may reflect the best difference in brain reorganization after SCI and therapy. Treatment can enhance information flows between regions and promote the integration of motor functions to return to normal. These findings may reveal the information processing of disrupted network modules.
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Affiliation(s)
- Ting Feng
- School of Biological Science and Medical Engineering, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, PR China
| | - Can Zhao
- Institute of Rehabilitation Engineering, China Rehabilitation Science Institute, Beijing, PR China
| | - Jia-Sheng Rao
- School of Biological Science and Medical Engineering, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, PR China
| | - Xiao-Jun Guo
- School of Biological Science and Medical Engineering, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, PR China
| | - Shu-Sheng Bao
- School of Biological Science and Medical Engineering, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, PR China
| | - Le-Wei He
- School of Biological Science and Medical Engineering, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, PR China
| | - Wen Zhao
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China
| | - Zuxiang Liu
- State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, PR China
- Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, PR China
- Department of Biology, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, PR China
| | - Zhao-Yang Yang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China
| | - Xiao-Guang Li
- School of Biological Science and Medical Engineering, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, PR China
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10
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Slovinska L, Harvanova D. The Role of Mesenchymal Stromal Cells and Their Products in the Treatment of Injured Spinal Cords. Curr Issues Mol Biol 2023; 45:5180-5197. [PMID: 37367078 DOI: 10.3390/cimb45060329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 06/28/2023] Open
Abstract
Spinal cord injury (SCI) is a destructive condition that results in lasting neurological damage resulting in disruption of the connection between the central nervous system and the rest of the body. Currently, there are several approaches in the treatment of a damaged spinal cord; however, none of the methods allow the patient to return to the original full-featured state of life before the injury. Cell transplantation therapies show great potential in the treatment of damaged spinal cords. The most examined type of cells used in SCI research are mesenchymal stromal cells (MSCs). These cells are at the center of interest of scientists because of their unique properties. MSCs regenerate the injured tissue in two ways: (i) they are able to differentiate into some types of cells and so can replace the cells of injured tissue and (ii) they regenerate tissue through their powerful known paracrine effect. This review presents information about SCI and the treatments usually used, aiming at cell therapy using MSCs and their products, among which active biomolecules and extracellular vesicles predominate.
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Affiliation(s)
- Lucia Slovinska
- Associated Tissue Bank, P.J. Šafárik University and L. Pasteur University Hospital, 040 01 Košice, Slovakia
- Department of Regenerative Medicine and Cell Therapy, Institute of Neurobiology Biomedical Research Center, Slovak Academy of Sciences, 040 01 Košice, Slovakia
| | - Denisa Harvanova
- Associated Tissue Bank, P.J. Šafárik University and L. Pasteur University Hospital, 040 01 Košice, Slovakia
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11
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Hashimoto S, Nagoshi N, Shinozaki M, Nakanishi K, Suematsu Y, Shibata T, Kawai M, Kitagawa T, Ago K, Kamata Y, Yasutake K, Koya I, Ando Y, Minoda A, Shindo T, Shibata S, Matsumoto M, Nakamura M, Okano H. Microenvironmental modulation in tandem with human stem cell transplantation enhances functional recovery after chronic complete spinal cord injury. Biomaterials 2023; 295:122002. [PMID: 36736008 DOI: 10.1016/j.biomaterials.2023.122002] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/16/2022] [Accepted: 01/12/2023] [Indexed: 01/27/2023]
Abstract
While rapid advancements in regenerative medicine strategies for spinal cord injury (SCI) have been made, most research in this field has focused on the early stages of incomplete injury. However, the majority of patients experience chronic severe injury; therefore, treatments for these situations are fundamentally important. Here, we hypothesized that environmental modulation via a clinically relevant hepatocyte growth factor (HGF)-releasing scaffold and human iPS cell-derived neural stem/progenitor cells (hNS/PCs) transplantation contributes to functional recovery after chronic complete transection SCI. Effective release of HGF from a collagen scaffold induced progressive axonal elongation and increased grafted cell viability by activating microglia/macrophages and meningeal cells, inhibiting inflammation, reducing scar formation, and enhancing vascularization. Furthermore, hNS/PCs transplantation enhanced endogenous neuronal regrowth, the extension of graft axons, and the formation of circuits around the lesion and lumbar enlargement between host and graft neurons, resulting in the restoration of locomotor and urinary function. This study presents an effective therapeutic strategy for severe chronic SCI and provides evidence for the feasibility of regenerative medicine strategies using clinically relevant materials.
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Affiliation(s)
- Shogo Hashimoto
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Narihito Nagoshi
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Munehisa Shinozaki
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Katsuyuki Nakanishi
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yu Suematsu
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takahiro Shibata
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Momotaro Kawai
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takahiro Kitagawa
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kentaro Ago
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yasuhiro Kamata
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kaori Yasutake
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Ikuko Koya
- Center for Integrative Medical Sciences, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan
| | - Yoshinari Ando
- Center for Integrative Medical Sciences, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan
| | - Aki Minoda
- Center for Integrative Medical Sciences, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan
| | - Tomoko Shindo
- Electron Microscope Laboratory, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shinsuke Shibata
- Electron Microscope Laboratory, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata, 951-8510, Japan
| | - Morio Matsumoto
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Masaya Nakamura
- Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
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Sousa JPM, Stratakis E, Mano J, Marques PAAP. Anisotropic 3D scaffolds for spinal cord guided repair: Current concepts. BIOMATERIALS ADVANCES 2023; 148:213353. [PMID: 36848743 DOI: 10.1016/j.bioadv.2023.213353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023]
Abstract
A spinal cord injury (SCI) can be caused by unforeseen events such as a fall, a vehicle accident, a gunshot, or a malignant illness, which has a significant impact on the quality of life of the patient. Due to the limited regenerative potential of the central nervous system (CNS), SCI is one of the most daunting medical challenges of modern medicine. Great advances have been made in tissue engineering and regenerative medicine, which include the transition from two-dimensional (2D) to three-dimensional (3D) biomaterials. Combinatory treatments that use 3D scaffolds may significantly enhance the repair and regeneration of functional neural tissue. In an effort to mimic the chemical and physical properties of neural tissue, scientists are researching the development of the ideal scaffold made of synthetic and/or natural polymers. Moreover, in order to restore the architecture and function of neural networks, 3D scaffolds with anisotropic properties that replicate the native longitudinal orientation of spinal cord nerve fibres are being designed. In an effort to determine if scaffold anisotropy is a crucial property for neural tissue regeneration, this review focuses on the most current technological developments relevant to anisotropic scaffolds for SCI. Special consideration is given to the architectural characteristics of scaffolds containing axially oriented fibres, channels, and pores. By analysing neural cell behaviour in vitro and tissue integration and functional recovery in animal models of SCI, the therapeutic efficacy is evaluated for its successes and limitations.
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Affiliation(s)
- Joana P M Sousa
- TEMA - Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal; LASI - Intelligent Systems Associate Laboratory, Portugal; Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas (FORTH-IESL), Heraklion, Greece; CICECO - Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Emmanuel Stratakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas (FORTH-IESL), Heraklion, Greece
| | - João Mano
- CICECO - Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Paula A A P Marques
- TEMA - Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal; LASI - Intelligent Systems Associate Laboratory, Portugal.
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13
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Suzuki H, Imajo Y, Funaba M, Ikeda H, Nishida N, Sakai T. Current Concepts of Biomaterial Scaffolds and Regenerative Therapy for Spinal Cord Injury. Int J Mol Sci 2023; 24:ijms24032528. [PMID: 36768846 PMCID: PMC9917245 DOI: 10.3390/ijms24032528] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 02/03/2023] Open
Abstract
Spinal cord injury (SCI) is a catastrophic condition associated with significant neurological deficit and social and financial burdens. It is currently being managed symptomatically, with no real therapeutic strategies available. In recent years, a number of innovative regenerative strategies have emerged and have been continuously investigated in preclinical research and clinical trials. In the near future, several more are expected to come down the translational pipeline. Among ongoing and completed trials are those reporting the use of biomaterial scaffolds. The advancements in biomaterial technology, combined with stem cell therapy or other regenerative therapy, can now accelerate the progress of promising novel therapeutic strategies from bench to bedside. Various types of approaches to regeneration therapy for SCI have been combined with the use of supportive biomaterial scaffolds as a drug and cell delivery system to facilitate favorable cell-material interactions and the supportive effect of neuroprotection. In this review, we summarize some of the most recent insights of preclinical and clinical studies using biomaterial scaffolds in regenerative therapy for SCI and summarized the biomaterial strategies for treatment with simplified results data. One hundred and sixty-eight articles were selected in the present review, in which we focused on biomaterial scaffolds. We conducted our search of articles using PubMed and Medline, a medical database. We used a combination of "Spinal cord injury" and ["Biomaterial", or "Scaffold"] as search terms and searched articles published up until 30 April 2022. Successful future therapies will require these biomaterial scaffolds and other synergistic approaches to address the persistent barriers to regeneration, including glial scarring, the loss of a structural framework, and biocompatibility. This database could serve as a benchmark to progress in future clinical trials for SCI using biomaterial scaffolds.
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14
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Blando S, Anchesi I, Mazzon E, Gugliandolo A. Can a Scaffold Enriched with Mesenchymal Stem Cells Be a Good Treatment for Spinal Cord Injury? Int J Mol Sci 2022; 23:ijms23147545. [PMID: 35886890 PMCID: PMC9319719 DOI: 10.3390/ijms23147545] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 12/10/2022] Open
Abstract
Spinal cord injury (SCI) is a worldwide highly crippling disease that can lead to the loss of motor and sensory neurons. Among the most promising therapies, there are new techniques of tissue engineering based on stem cells that promote neuronal regeneration. Among the different types of stem cells, mesenchymal stem cells (MSCs) seem the most promising. Indeed, MSCs are able to release trophic factors and to differentiate into the cell types that can be found in the spinal cord. Currently, the most common procedure to insert cells in the lesion site is infusion. However, this causes a low rate of survival and engraftment in the lesion site. For these reasons, tissue engineering is focusing on bioresorbable scaffolds to help the cells to stay in situ. Scaffolds do not only have a passive role but become fundamental for the trophic support of cells and the promotion of neuroregeneration. More and more types of materials are being studied as scaffolds to decrease inflammation and increase the engraftment as well as the survival of the cells. Our review aims to highlight how the use of scaffolds made from biomaterials enriched with MSCs gives positive results in in vivo SCI models as well as the first evidence obtained in clinical trials.
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Liu S, Yang H, Chen D, Xie Y, Tai C, Wang L, Wang P, Wang B. Three-dimensional bioprinting sodium alginate/gelatin scaffold combined with neural stem cells and oligodendrocytes markedly promoting nerve regeneration after spinal cord injury. Regen Biomater 2022; 9:rbac038. [PMID: 35801010 PMCID: PMC9255276 DOI: 10.1093/rb/rbac038] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/27/2022] [Accepted: 06/02/2022] [Indexed: 12/03/2022] Open
Abstract
Accumulating research has indicated that the transplantation of combined stem cells and scaffolds is an effective method for spinal cord injury (SCI). The development of three-dimensional (3D) bioprinting technology can make the 3D scaffolds combined with cells more accurate and effective for SCI treatment. However, unmyelinated newborn nerve fibers have no nerve signaling conduction, hampering recovery of motor function. In this study, we designed and printed a type of sodium alginate/gelatin scaffold loaded with neural stem cells and oligodendrocytes, which were involved in the formation of the myelin sheaths of neural cell axons. In order to observe the effectiveness of this 3D bioprinting scaffold, we transplanted it into the completely transected rat spinal cord, and then immunofluorescence staining, hematoxylin–eosin staining and behavioral assessment were performed. The results showed that this 3D bioprinting scaffold markedly improved the hindlimb motor function and promoted nerve regeneration. These findings suggested that this novel 3D bioprinting scaffold was a good carrier for cells transplantation, thereby enhancing spinal cord repair following injury.
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Affiliation(s)
- Shuo Liu
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School Clinical Stem Cell Center, , Nanjing, Jiangsu Province, China
| | - Hui Yang
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School Clinical Stem Cell Center, , Nanjing, Jiangsu Province, China
| | - Dong Chen
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School Clinical Stem Cell Center, , Nanjing, Jiangsu Province, China
| | - Yuanyuan Xie
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School Clinical Stem Cell Center, , Nanjing, Jiangsu Province, China
| | - ChenXu Tai
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School Clinical Stem Cell Center, , Nanjing, Jiangsu Province, China
| | - Liudi Wang
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School Clinical Stem Cell Center, , Nanjing, Jiangsu Province, China
| | - Peng Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School , Nanjing, Jiangsu Province, China
| | - Bin Wang
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School Clinical Stem Cell Center, , Nanjing, Jiangsu Province, China
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Cheng Y, Zhang Y, Wu H. Polymeric Fibers as Scaffolds for Spinal Cord Injury: A Systematic Review. Front Bioeng Biotechnol 2022; 9:807533. [PMID: 35223816 PMCID: PMC8864123 DOI: 10.3389/fbioe.2021.807533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
Abstract
Spinal cord injury (SCI) is a complex neurological condition caused by trauma, inflammation, and other diseases, which often leads to permanent changes in strength and sensory function below the injured site. Changes in the microenvironment and secondary injuries continue to pose challenges for nerve repair and recovery after SCI. Recently, there has been progress in the treatment of SCI with the use of scaffolds for neural tissue engineering. Polymeric fibers fabricated by electrospinning have been increasingly used in SCI therapy owing to their biocompatibility, complex porous structure, high porosity, and large specific surface area. Polymer fibers simulate natural extracellular matrix of the nerve fiber and guide axon growth. Moreover, multiple channels of polymer fiber simulate the bundle of nerves. Polymer fibers with porous structure can be used as carriers loaded with drugs, nerve growth factors and cells. As conductive fibers, polymer fibers have electrical stimulation of nerve function. This paper reviews the fabrication, characterization, and application in SCI therapy of polymeric fibers, as well as potential challenges and future perspectives regarding their application.
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Affiliation(s)
- Yuanpei Cheng
- Department of Orthopeadics, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yanbo Zhang
- Department of Orthopeadics, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Han Wu
- Department of Orthopeadics, China-Japan Union Hospital of Jilin University, Changchun, China
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Yang B, Liang C, Chen D, Cheng F, Zhang Y, Wang S, Shu J, Huang X, Wang J, Xia K, Ying L, Shi K, Wang C, Wang X, Li F, Zhao Q, Chen Q. A conductive supramolecular hydrogel creates ideal endogenous niches to promote spinal cord injury repair. Bioact Mater 2021; 15:103-119. [PMID: 35386356 PMCID: PMC8941182 DOI: 10.1016/j.bioactmat.2021.11.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 12/29/2022] Open
Abstract
The current effective method for treatment of spinal cord injury (SCI) is to reconstruct the biological microenvironment by filling the injured cavity area and increasing neuronal differentiation of neural stem cells (NSCs) to repair SCI. However, the method is characterized by several challenges including irregular wounds, and mechanical and electrical mismatch of the material-tissue interface. In the current study, a unique and facile agarose/gelatin/polypyrrole (Aga/Gel/PPy, AGP3) hydrogel with similar conductivity and modulus as the spinal cord was developed by altering the concentration of Aga and PPy. The gelation occurred through non-covalent interactions, and the physically crosslinked features made the AGP3 hydrogels injectable. In vitro cultures showed that AGP3 hydrogel exhibited excellent biocompatibility, and promoted differentiation of NSCs toward neurons whereas it inhibited over-proliferation of astrocytes. The in vivo implanted AGP3 hydrogel completely covered the tissue defects and reduced injured cavity areas. In vivo studies further showed that the AGP3 hydrogel provided a biocompatible microenvironment for promoting endogenous neurogenesis rather than glial fibrosis formation, resulting in significant functional recovery. RNA sequencing analysis further indicated that AGP3 hydrogel significantly modulated expression of neurogenesis-related genes through intracellular Ca2+ signaling cascades. Overall, this supramolecular strategy produces AGP3 hydrogel that can be used as favorable biomaterials for SCI repair by filling the cavity and imitating the physiological properties of the spinal cord. A facile strategy was developed to fabricate AGP3 hydrogel satisfying physiological requirements. AGP3 hydrogel promoted the differentiation of NSCs into neurons in vitro. AGP3 hydrogel could activate endogenous neurogenesis to repair spinal cord injury. AGP3 hydrogel modulated expression of neurogenesis-related genes in vitro.
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18
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Liu S, Xie YY, Wang LD, Tai CX, Chen D, Mu D, Cui YY, Wang B. A multi-channel collagen scaffold loaded with neural stem cells for the repair of spinal cord injury. Neural Regen Res 2021; 16:2284-2292. [PMID: 33818514 PMCID: PMC8354107 DOI: 10.4103/1673-5374.310698] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Collagen scaffolds possess a three-dimensional porous structure that provides sufficient space for cell growth and proliferation, the passage of nutrients and oxygen, and the discharge of metabolites. In this study, a porous collagen scaffold with axially-aligned luminal conduits was prepared. In vitro biocompatibility analysis of the collagen scaffold revealed that it enhances the activity of neural stem cells and promotes cell extension, without affecting cell differentiation. The collagen scaffold loaded with neural stem cells improved the hindlimb motor function in the rat model of T8 complete transection and promoted nerve regeneration. The collagen scaffold was completely degraded in vivo within 5 weeks of implantation, exhibiting good biodegradability. Rectal temperature, C-reactive protein expression and CD68 staining demonstrated that rats with spinal cord injury that underwent implantation of the collagen scaffold had no notable inflammatory reaction. These findings suggest that this novel collagen scaffold is a good carrier for neural stem cell transplantation, thereby enhancing spinal cord repair following injury. This study was approved by the Animal Ethics Committee of Nanjing Drum Tower Hospital (the Affiliated Hospital of Nanjing University Medical School), China (approval No. 2019AE02005) on June 15, 2019.
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Affiliation(s)
- Shuo Liu
- Clinical Stem Cell Center, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Yuan-Yuan Xie
- Clinical Stem Cell Center, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Liu-Di Wang
- Clinical Stem Cell Center, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Chen-Xu Tai
- Clinical Stem Cell Center, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Dong Chen
- Clinical Stem Cell Center, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Dan Mu
- Department of Radiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Yan-Yan Cui
- Department of Cell Biology and Genetics, Chongqing Medical University, Chongqing, China
| | - Bin Wang
- Clinical Stem Cell Center, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
- Correspondence to: Bin Wang, .
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19
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Tang F, Tang J, Zhao Y, Zhang J, Xiao Z, Chen B, Han G, Yin N, Jiang X, Zhao C, Cheng S, Wang Z, Chen Y, Chen Q, Song K, Zhang Z, Niu J, Wang L, Shi Q, Chen L, Yang H, Hou S, Zhang S, Dai J. Long-term clinical observation of patients with acute and chronic complete spinal cord injury after transplantation of NeuroRegen scaffold. SCIENCE CHINA-LIFE SCIENCES 2021; 65:909-926. [PMID: 34406569 DOI: 10.1007/s11427-021-1985-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 06/08/2021] [Indexed: 02/05/2023]
Abstract
Spinal cord injury (SCI) often results in an inhibitory environment at the injury site. In our previous studies, transplantation of a scaffold combined with stem cells was proven to induce neural regeneration in animal models of complete SCI. Based on these preclinical studies, collagen scaffolds loaded with the patients' own bone marrow mononuclear cells or human umbilical cord mesenchymal stem cells were transplanted into SCI patients. Fifteen patients with acute complete SCI and 51 patients with chronic complete SCI were enrolled and followed up for 2 to 5 years. No serious adverse events related to functional scaffold transplantation were observed. Among the patients with acute SCI, five patients achieved expansion of their sensory positions and six patients recovered sensation in the bowel or bladder. Additionally, four patients regained voluntary walking ability accompanied by reconnection of neural signal transduction. Among patients with chronic SCI, 16 patients achieved expansion of their sensation level and 30 patients experienced enhanced reflexive defecation sensation or increased skin sweating below the injury site. Nearly half of the patients with chronic cervical SCI developed enhanced finger activity. These long-term follow-up results suggest that functional scaffold transplantation may represent a feasible treatment for patients with complete SCI.
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Affiliation(s)
- Fengwu Tang
- Characteristics Medical Center of the Chinese People's Armed Police Forces (CAPF), Tianjin, 300162, China
| | - Jiaguang Tang
- Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, 100048, China.,Department of Orthopaedics, Beijing Tongren Hospital, Beijing, 100730, China
| | - Yannan Zhao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100190, China.,Beijing ZhongKeZaiKang Biotechnology Co., Ltd, Beijing, 101407, China
| | - Jiaojiao Zhang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhifeng Xiao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100190, China.,Beijing ZhongKeZaiKang Biotechnology Co., Ltd, Beijing, 101407, China
| | - Bing Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100190, China
| | - Guang Han
- Characteristics Medical Center of the Chinese People's Armed Police Forces (CAPF), Tianjin, 300162, China
| | - Na Yin
- Characteristics Medical Center of the Chinese People's Armed Police Forces (CAPF), Tianjin, 300162, China.,Department of Rehabilitation, the 983rd Hospital of the Joint Logistics Support Force of the Chinese People's Liberation Army, Tianjin, 300141, China
| | - Xianfeng Jiang
- Characteristics Medical Center of the Chinese People's Armed Police Forces (CAPF), Tianjin, 300162, China
| | - Changyu Zhao
- Characteristics Medical Center of the Chinese People's Armed Police Forces (CAPF), Tianjin, 300162, China
| | - Shixiang Cheng
- Characteristics Medical Center of the Chinese People's Armed Police Forces (CAPF), Tianjin, 300162, China
| | - Ziqiang Wang
- Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, 100048, China
| | - Yumei Chen
- Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, 100048, China
| | - Qiaoling Chen
- Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, 100048, China
| | - Keran Song
- Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, 100048, China
| | - Zhiwei Zhang
- Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, 100048, China
| | - Junjie Niu
- Department of Orthopaedics, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Lingjun Wang
- Department of Orthopaedics, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Qin Shi
- Department of Orthopaedics, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Liang Chen
- Department of Orthopaedics, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Huilin Yang
- Department of Orthopaedics, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Shuxun Hou
- Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, 100048, China.
| | - Sai Zhang
- Characteristics Medical Center of the Chinese People's Armed Police Forces (CAPF), Tianjin, 300162, China.
| | - Jianwu Dai
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100190, China.
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20
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Abstract
Spinal cord injury (SCI) destroys the sensorimotor pathway and blocks the information flow between the peripheral nerve and the brain, resulting in autonomic function loss. Numerous studies have explored the effects of obstructed information flow on brain structure and function and proved the extensive plasticity of the brain after SCI. Great progress has also been achieved in therapeutic strategies for SCI to restore the "re-innervation" of the cerebral cortex to the limbs to some extent. Although no thorough research has been conducted, the changes of brain structure and function caused by "re-domination" have been reported. This article is a review of the recent research progress on local structure, functional changes, and circuit reorganization of the cerebral cortex after SCI. Alterations of structure and electrical activity characteristics of brain neurons, features of brain functional reorganization, and regulation of brain functions by reconfigured information flow were also explored. The integration of brain function is the basis for the human body to exercise complex/fine movements and is intricately and widely regulated by information flow. Hence, its changes after SCI and treatments should be considered.
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Affiliation(s)
- Can Zhao
- Institute of Rehabilitation Engineering, China Rehabilitation Science Institute, Beijing, China
- School of Rehabilitation, Capital Medical University, Beijing, China
| | - Shu-Sheng Bao
- Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Meng Xu
- Department of Orthopedics, The First Medical Center of PLA General Hospital, Beijing, China
| | - Jia-Sheng Rao
- Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
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21
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Yin W, Xue W, Zhu H, Shen H, Xiao Z, Wu S, Zhao Y, Cao Y, Tan J, Li J, Liu W, Wang L, Meng L, Chen B, Zhao M, Jiang X, Li X, Ren C, Dai J. Scar tissue removal-activated endogenous neural stem cells aid Taxol-modified collagen scaffolds in repairing chronic long-distance transected spinal cord injury. Biomater Sci 2021; 9:4778-4792. [PMID: 34042920 DOI: 10.1039/d1bm00449b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Scar tissue removal combined with biomaterial implantation is considered an effective measure to repair chronic transected spinal cord injury (SCI). However, whether more scar tissue removal surgeries could affect the treatment effects of biomaterial implantation still needs to be explored. In this study, we performed the first scar tissue removal surgery in the 3rd month and the second in the 6th month after completely removing 1 cm of spinal tissue in canines. We found that Taxol-modified linear ordered collagen scaffold (LOCS + Taxol) implantation could promote axonal regeneration, neurogenesis, and electrophysiological and functional recovery only in canines at the first scar tissue removal surgery, but not in canines at the second scar tissue removal surgery. Interestingly, we found that more endogenous neural stem cells (NSCs) around the injured site could be activated in canines with the first rather than the second scar tissue removal. Furthermore, we demonstrated that Taxol could promote the neuronal differentiation of NSCs in the myelin inhibition microenvironment through the p38 MAPK signaling pathway in vitro. Therefore, we speculated that endogenous NSC activation by the first scar tissue removal surgery and its further differentiation into neurons induced by Taxol may contribute to functional recovery in canines. Together, LOCS + Taxol implantation in combination with the first scar tissue removal provides a promising therapy for chronic long-distance transected SCI repair with the help of scar tissue removal activated endogenous NSCs.
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Affiliation(s)
- Wen Yin
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, Hunan 410008, China.
| | - Weiwei Xue
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Hecheng Zhu
- Changsha Kexin Cancer Hospital, Changsha, Hunan 410205, China
| | - He Shen
- Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Zhifeng Xiao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shuyu Wu
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, Hunan 410008, China.
| | - Yannan Zhao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yudong Cao
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, Hunan 410008, China.
| | - Jun Tan
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, Hunan 410008, China.
| | - Juan Li
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, Hunan 410008, China.
| | - Weidong Liu
- Cancer Research Institute, Key Laboratory for Carcinogenesis of Chinese Ministry of Health, School of Basic Medical Science, Central South University, Changsha, Hunan 410078, China.
| | - Lei Wang
- Cancer Research Institute, Key Laboratory for Carcinogenesis of Chinese Ministry of Health, School of Basic Medical Science, Central South University, Changsha, Hunan 410078, China.
| | - Li Meng
- Department of Radiology, Xiangya Hospital, Central South University (CSU), Changsha, Hunan 410008, China
| | - Bing Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Ming Zhao
- Changsha Kexin Cancer Hospital, Changsha, Hunan 410205, China
| | - Xingjun Jiang
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, Hunan 410008, China.
| | - Xing Li
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China and Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Caiping Ren
- Cancer Research Institute, Key Laboratory for Carcinogenesis of Chinese Ministry of Health, School of Basic Medical Science, Central South University, Changsha, Hunan 410078, China.
| | - Jianwu Dai
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
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22
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Cao J, Wu J, Mu J, Feng S, Gao J. The design criteria and therapeutic strategy of functional scaffolds for spinal cord injury repair. Biomater Sci 2021; 9:4591-4606. [PMID: 34018520 DOI: 10.1039/d1bm00361e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Spinal cord injury (SCI) remains a therapeutic challenge in clinic. Current drug and cell therapeutics have obtained significant efficacy but are still in the early stages for complete neural and functional recovery. In the past few decades, functional scaffolds (FSs) have been rapidly developed to bridge the lesion and provide a framework for tissue regeneration in SCI repair. Moreover, a FS can act as an adjuvant for locally delivering drugs in the lesion with a designed drug release profile, and supplying a biomimetic environment for implanted cells. In this review, the design criteria of FSs for SCI treatment are summarized according to their biocompatibility, mechanical properties, morphology, architecture, and biodegradability. Subsequently, FSs designed for SCI repair in the scope of drug delivery, cell implantation and combination therapy are introduced, respectively. And how a FS promotes their therapeutic efficacy is analyzed. Finally, the challenges, perspectives, and potential of FSs for SCI treatment are discussed. Hopefully, this review may inspire the future development of potent FSs to facilitate SCI repair in clinic.
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Affiliation(s)
- Jian Cao
- Institute of Pharmaceutics, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China.
| | - Jiahe Wu
- Institute of Pharmaceutics, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China.
| | - Jiafu Mu
- Institute of Pharmaceutics, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China.
| | - Shiqing Feng
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, 300052, P.R. China. and International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord, Tianjin, 300052, P.R. China
| | - Jianqing Gao
- Institute of Pharmaceutics, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China. and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, P.R. China
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23
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Liu D, Shen H, Shen Y, Long G, He X, Zhao Y, Yang Z, Dai J, Li X. Dual-Cues Laden Scaffold Facilitates Neurovascular Regeneration and Motor Functional Recovery After Complete Spinal Cord Injury. Adv Healthc Mater 2021; 10:e2100089. [PMID: 33739626 DOI: 10.1002/adhm.202100089] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/24/2021] [Indexed: 12/26/2022]
Abstract
Complete transection spinal cord injury (SCI) severely disrupts the integrity of both neural circuits and the microvasculature system. Hence, fabricating a functional bio-scaffold that could coordinate axonal regeneration and vascular reconstruction in the lesion area may emerge as a new paradigm for complete SCI repair. In this study, a photosensitive hydrogel scaffold loaded with collagen-binding stromal cell-derived factor-1a and Taxol liposomes is capable of inducing migration of endothelial cells and promoting neurite outgrowth of neurons in vitro. In addition, when implanted into a rat T8 complete transection SCI model, the above dual-cues laden scaffold exhibits a synergistic effect on facilitating axon and vessel regeneration in the lesion area within 10 days after injury. Moreover, long-term therapeutic effects are also observed after dual-cues laden scaffold implantation, including revascularization, descending and propriospinal axonal regeneration, fibrotic scar reduction, electrophysiological recovery, and motor function improvement. In summary, the dual-cues laden scaffold has good clinical application potential for patients with severe SCI.
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Affiliation(s)
- Dingyang Liu
- Department of Neurosurgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
- Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan Province Changsha Hunan Province 410008 China
- Department of Spine Surgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
| | - He Shen
- Key Laboratory for Nano‐Bio Interface Research Division of Nanobiomedicine Suzhou Institute of Nano‐Tech and Nano‐Bionics Chinese Academy of Sciences Suzhou 215123 China
| | - Yeyu Shen
- Department of Neurosurgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
- Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan Province Changsha Hunan Province 410008 China
- Department of Spine Surgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
| | - Ge Long
- Department of Anesthesia The Third Xiangya Hospital Central South University Changsha Hunan Province 410008 China
| | - Xinghui He
- Department of Neurosurgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
- Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan Province Changsha Hunan Province 410008 China
- Department of Spine Surgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
| | - Yannan Zhao
- State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China
| | - Zhiquan Yang
- Department of Neurosurgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
- Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan Province Changsha Hunan Province 410008 China
- Department of Spine Surgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
| | - Jianwu Dai
- State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China
| | - Xing Li
- Department of Neurosurgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
- Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan Province Changsha Hunan Province 410008 China
- Department of Spine Surgery Xiangya Hospital Central South University Changsha Hunan Province 410008 China
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24
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Abstract
Traumatic spinal cord injury (SCI) results in direct and indirect damage to neural tissues, which results in motor and sensory dysfunction, dystonia, and pathological reflex that ultimately lead to paraplegia or tetraplegia. A loss of cells, axon regeneration failure, and time-sensitive pathophysiology make tissue repair difficult. Despite various medical developments, there are currently no effective regenerative treatments. Stem cell therapy is a promising treatment for SCI due to its multiple targets and reactivity benefits. The present review focuses on SCI stem cell therapy, including bone marrow mesenchymal stem cells, umbilical mesenchymal stem cells, adipose-derived mesenchymal stem cells, neural stem cells, neural progenitor cells, embryonic stem cells, induced pluripotent stem cells, and extracellular vesicles. Each cell type targets certain features of SCI pathology and shows therapeutic effects via cell replacement, nutritional support, scaffolds, and immunomodulation mechanisms. However, many preclinical studies and a growing number of clinical trials found that single-cell treatments had only limited benefits for SCI. SCI damage is multifaceted, and there is a growing consensus that a combined treatment is needed.
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Affiliation(s)
- Liyi Huang
- Department of Rehabilitation Medicine Center, 34753West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, PR China.,Key Laboratory of Rehabilitation Medicine in Sichuan Province, Sichuan University, Chengdu, Sichuan Province, PR China
| | - Chenying Fu
- State Key Laboratory of Biotherapy, 34753West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Feng Xiong
- Department of Rehabilitation Medicine Center, 34753West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, PR China.,Key Laboratory of Rehabilitation Medicine in Sichuan Province, Sichuan University, Chengdu, Sichuan Province, PR China
| | - Chengqi He
- Department of Rehabilitation Medicine Center, 34753West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, PR China.,Key Laboratory of Rehabilitation Medicine in Sichuan Province, Sichuan University, Chengdu, Sichuan Province, PR China
| | - Quan Wei
- Department of Rehabilitation Medicine Center, 34753West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, PR China.,Key Laboratory of Rehabilitation Medicine in Sichuan Province, Sichuan University, Chengdu, Sichuan Province, PR China
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25
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Elkhenany H, Elkodous MA, Newby SD, El-Derby AM, Dhar M, El-Badri N. Tissue Engineering Modalities and Nanotechnology. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/978-3-030-55359-3_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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26
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Guo S, Redenski I, Landau S, Szklanny A, Merdler U, Levenberg S. Prevascularized Scaffolds Bearing Human Dental Pulp Stem Cells for Treating Complete Spinal Cord Injury. Adv Healthc Mater 2020; 9:e2000974. [PMID: 32902147 DOI: 10.1002/adhm.202000974] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/08/2020] [Indexed: 02/05/2023]
Abstract
The regeneration of injured spinal cord is hampered by the lack of vascular supply and neurotrophic support. Transplanting tissue-engineered constructs with developed vascular networks and neurotrophic factors, and further understanding the pattern of vessel growth in the remodeled spinal cord tissue are greatly desired. To this end, highly vascularized scaffolds embedded with human dental pulp stem cells (DPSCs) are fabricated, which possess paracrine-mediated angiogenic and neuroregenerative potentials. The potent pro-angiogenic effect of the prevascularized scaffolds is first demonstrated in a rat femoral bundle model, showing robust vessel growth and blood perfusion induced within these scaffolds postimplantation, as evidenced by laser speckle contrast imaging and 3D microCT dual imaging modalities. More importantly, in a rat complete spinal cord transection model, the implantation of these scaffolds to the injured spinal cords can also promote revascularization, as well as axon regeneration, myelin deposition, and sensory recovery. Furthermore, 3D microCT imaging and novel morphometric analysis on the remodeled spinal cord tissue demonstrate substantial regenerated vessels, more significantly in the sensory tract regions, which correlates with behavioral recovery following prevascularization treatment. Taken together, prevascularized DPSC-embedded constructs bear angiogenic and neurotrophic potentials, capable of augmenting and modulating SCI repair.
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Affiliation(s)
- Shaowei Guo
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
- The First Affiliated Hospital, Shantou University Medical College, Shantou, 515000, China
| | - Idan Redenski
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Shira Landau
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Ariel Szklanny
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Uri Merdler
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Shulamit Levenberg
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
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27
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Yang B, Zhang F, Cheng F, Ying L, Wang C, Shi K, Wang J, Xia K, Gong Z, Huang X, Yu C, Li F, Liang C, Chen Q. Strategies and prospects of effective neural circuits reconstruction after spinal cord injury. Cell Death Dis 2020; 11:439. [PMID: 32513969 PMCID: PMC7280216 DOI: 10.1038/s41419-020-2620-z] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 05/16/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023]
Abstract
Due to the disconnection of surviving neural elements after spinal cord injury (SCI), such patients had to suffer irreversible loss of motor or sensory function, and thereafter enormous economic and emotional burdens were brought to society and family. Despite many strategies being dealing with SCI, there is still no effective regenerative therapy. To date, significant progress has been made in studies of SCI repair strategies, including gene regulation of neural regeneration, cell or cell-derived exosomes and growth factors transplantation, repair of biomaterials, and neural signal stimulation. The pathophysiology of SCI is complex and multifaceted, and its mechanisms and processes are incompletely understood. Thus, combinatorial therapies have been demonstrated to be more effective, and lead to better neural circuits reconstruction and functional recovery. Combinations of biomaterials, stem cells, growth factors, drugs, and exosomes have been widely developed. However, simply achieving axon regeneration will not spontaneously lead to meaningful functional recovery. Therefore, the formation and remodeling of functional neural circuits also depend on rehabilitation exercises, such as exercise training, electrical stimulation (ES) and Brain-Computer Interfaces (BCIs). In this review, we summarize the recent progress in biological and engineering strategies for reconstructing neural circuits and promoting functional recovery after SCI, and emphasize current challenges and future directions.
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Affiliation(s)
- Biao Yang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Feng Zhang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Feng Cheng
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Liwei Ying
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Chenggui Wang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Kesi Shi
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Jingkai Wang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Kaishun Xia
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Zhe Gong
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Xianpeng Huang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Cao Yu
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Fangcai Li
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China.
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
| | - Chengzhen Liang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China.
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
| | - Qixin Chen
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China.
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
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Liu W, Xu B, Xue W, Yang B, Fan Y, Chen B, Xiao Z, Xue X, Sun Z, Shu M, Zhang Q, Shi Y, Zhao Y, Dai J. A functional scaffold to promote the migration and neuronal differentiation of neural stem/progenitor cells for spinal cord injury repair. Biomaterials 2020; 243:119941. [DOI: 10.1016/j.biomaterials.2020.119941] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/26/2020] [Accepted: 03/04/2020] [Indexed: 02/06/2023]
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Huang L, Wang Y, Zhu M, Wan X, Zhang H, Lei T, Blesch A, Liu S. Anisotropic Alginate Hydrogels Promote Axonal Growth across Chronic Spinal Cord Transections after Scar Removal. ACS Biomater Sci Eng 2020; 6:2274-2286. [PMID: 33455324 DOI: 10.1021/acsbiomaterials.9b01802] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We have previously reported that cell-seeded alginate hydrogels (AHs) with anisotropic capillaries can restore the continuity of the spinal cord and support axonal regeneration in a rat model of acute partial spinal cord transection. Whether similar effects can be found after transplantation into sites of complete chronic spinal cord transections without additional growth-promoting stimuli has not been investigated. We therefore implanted AHs into the cavity of a chronic thoracic transection following scar resection (SR) 4 weeks postinjury and examined electrophysiological and functional recovery as well as regeneration of descending and ascending projections within and beyond the AH scaffold up to 3 months after engraftment. Our results indicate that both electrophysiological conductivity and locomotor function are significantly improved after AH engraftment. SR transiently impairs locomotor function immediately after surgery but does not affect long-term outcomes. Histological analysis shows numerous host cells migrating into the scaffold channels and a reduction of fibroglial scaring around the lesion by AH grafts. In contrast to corticospinal axons, raphaespinal and propriospinal descending axons and ascending sensory axons regenerate throughout the scaffolds and extend into the distal host parenchyma. These results further support the pro-regenerative properties of AHs and their therapeutic potential for chronic SCI in combination with other strategies to improve functional outcomes after spinal cord injury.
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Affiliation(s)
- Lulu Huang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, Hubei 430030, P.R. China
| | - Yu Wang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, Hubei 430030, P.R. China
| | - Mingxin Zhu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, Hubei 430030, P.R. China
| | - Xueyan Wan
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, Hubei 430030, P.R. China
| | - Huaqiu Zhang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, Hubei 430030, P.R. China
| | - Ting Lei
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, Hubei 430030, P.R. China
| | - Armin Blesch
- Department of Neurosciences, Center for Neural Repair, University of California, San Diego, Biomedical Research Facility 2, Room 2131, 9500 Gilman Drive, La Jolla, California 92093-0626, United States
| | - Shengwen Liu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, Hubei 430030, P.R. China
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30
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Chen X, Wu J, Sun R, Zhao Y, Li Y, Pan J, Chen Y, Wang X. Tubular scaffold with microchannels and an H-shaped lumen loaded with bone marrow stromal cells promotes neuroregeneration and inhibits apoptosis after spinal cord injury. J Tissue Eng Regen Med 2020; 14:397-411. [PMID: 31821733 PMCID: PMC7155140 DOI: 10.1002/term.2996] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 12/11/2022]
Abstract
As a result of its complex histological structure, regeneration patterns of grey and white matter are quite different in the spinal cord. Therefore, tissue engineering scaffolds for repairing spinal cord injury must be able to adapt to varying neural regeneration patterns. The aim of the present study was to improve a previously reported spinal cord‐mimicking partition‐type scaffold by adding microchannels on a single tubular wall along its longitudinal axis, thus integrating the two architectures of a single H‐shaped central tube and many microchannels. Next, the integrated scaffold was loaded with bone marrow stromal cells (BMSCs) and transplanted to bridge the 5‐mm defect of a complete transverse lesion in the thoracic spinal cord of rats. Subsequently, effects on nerve regeneration, locomotion function recovery, and early neuroprotection were observed. After 1 year of repair, the integrated scaffold could guide the regeneration of axons appearing in the debris of degraded microchannels, especially serotonin receptor 1A receptor‐positive axonal tracts, which were relatively orderly arranged. Moreover, a network of nerve fibres was present, and a few BMSCs expressed neuronal markers in tubular lumens. Functionally, electrophysiological and locomotor functions of rats were partially recovered. In addition, we found that BMSCs could protect neurons and oligodendrocytes from apoptosis during the early stage of implantation. Taken together, our results demonstrate the potential of this novel integrated scaffold loaded with BMSCs to promote spinal cord regeneration through mechanical guidance and neuroprotective mechanisms.
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Affiliation(s)
- Xue Chen
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu, China.,Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, China
| | - Jian Wu
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu, China
| | - Rongcheng Sun
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu, China
| | - Yahong Zhao
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Yi Li
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu, China
| | - Jingying Pan
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu, China
| | - Ying Chen
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu, China
| | - Xiaodong Wang
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu, China.,Key Laboratory for Neuroregeneration of Ministry of Education and Co-innovation Center for Neuroregeneration of Jiangsu Province, Nantong University, Nantong, Jiangsu, China
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31
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Jiang JP, Liu XY, Zhao F, Zhu X, Li XY, Niu XG, Yao ZT, Dai C, Xu HY, Ma K, Chen XY, Zhang S. Three-dimensional bioprinting collagen/silk fibroin scaffold combined with neural stem cells promotes nerve regeneration after spinal cord injury. Neural Regen Res 2020; 15:959-968. [PMID: 31719263 DOI: 10.4103/1673-5374.268974] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Many studies have shown that bio-scaffolds have important value for promoting axonal regeneration of injured spinal cord. Indeed, cell transplantation and bio-scaffold implantation are considered to be effective methods for neural regeneration. This study was designed to fabricate a type of three-dimensional collagen/silk fibroin scaffold (3D-CF) with cavities that simulate the anatomy of normal spinal cord. This scaffold allows cell growth in vitro and in vivo. To observe the effects of combined transplantation of neural stem cells (NSCs) and 3D-CF on the repair of spinal cord injury. Forty Sprague-Dawley rats were divided into four groups: sham (only laminectomy was performed), spinal cord injury (transection injury of T10 spinal cord without any transplantation), 3D-CF (3D scaffold was transplanted into the local injured cavity), and 3D-CF + NSCs (3D scaffold co-cultured with NSCs was transplanted into the local injured cavity. Neuroelectrophysiology, imaging, hematoxylin-eosin staining, argentaffin staining, immunofluorescence staining, and western blot assay were performed. Apart from the sham group, neurological scores were significantly higher in the 3D-CF + NSCs group compared with other groups. Moreover, latency of the 3D-CF + NSCs group was significantly reduced, while the amplitude was significantly increased in motor evoked potential tests. The results of magnetic resonance imaging and diffusion tensor imaging showed that both spinal cord continuity and the filling of injury cavity were the best in the 3D-CF + NSCs group. Moreover, regenerative axons were abundant and glial scarring was reduced in the 3D-CF + NSCs group compared with other groups. These results confirm that implantation of 3D-CF combined with NSCs can promote the repair of injured spinal cord. This study was approved by the Institutional Animal Care and Use Committee of People's Armed Police Force Medical Center in 2017 (approval No. 2017-0007.2).
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Affiliation(s)
- Ji-Peng Jiang
- Department of Thoracic Surgery, General Hospital of People's Liberation Army (PLA), Beijing; Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Xiao-Yin Liu
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center; Tianjin Medical University, Tianjin, China
| | - Fei Zhao
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Xiang Zhu
- Department of Neurology, Luoyang First Hospital of Traditional Chinese Medicine, Luoyang, Henan Province, China
| | - Xiao-Yin Li
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Xue-Gang Niu
- Department of Neurosurgery, Fourth Central Hospital of Tianjin, Tianjin, China
| | - Zi-Tong Yao
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Chen Dai
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Hui-You Xu
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Ke Ma
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Xu-Yi Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
| | - Sai Zhang
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Chinese People's Armed Police Force (PAP) Medical Center, Tianjin, China
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