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Mungenast L, Nieminen R, Gaiser C, Faia-Torres AB, Rühe J, Suter-Dick L. Electrospun decellularized extracellular matrix scaffolds promote the regeneration of injured neurons. BIOMATERIALS AND BIOSYSTEMS 2023; 11:100081. [PMID: 37427248 PMCID: PMC10329103 DOI: 10.1016/j.bbiosy.2023.100081] [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: 02/10/2023] [Revised: 05/23/2023] [Accepted: 06/17/2023] [Indexed: 07/11/2023] Open
Abstract
Traumatic injury to the spinal cord (SCI) causes the transection of neurons, formation of a lesion cavity, and remodeling of the microenvironment by excessive extracellular matrix (ECM) deposition and scar formation leading to a regeneration-prohibiting environment. Electrospun fiber scaffolds have been shown to simulate the ECM and increase neural alignment and neurite outgrowth contributing to a growth-permissive matrix. In this work, electrospun ECM-like fibers providing biochemical and topological cues are implemented into a scaffold to represent an oriented biomaterial suitable for the alignment and migration of neural cells in order to improve spinal cord regeneration. The successfully decellularized spinal cord ECM (dECM), with no visible cell nuclei and dsDNA content < 50 ng/mg tissue, showed preserved ECM components, such as glycosaminoglycans and collagens. Serving as the biomaterial for 3D printer-assisted electrospinning, highly aligned and randomly distributed dECM fiber scaffolds (< 1 µm fiber diameter) were fabricated. The scaffolds were cytocompatible and supported the viability of a human neural cell line (SH-SY5Y) for 14 days. Cells were selectively differentiated into neurons, as confirmed by immunolabeling of specific cell markers (ChAT, Tubulin ß), and followed the orientation given by the dECM scaffolds. After generating a lesion site on the cell-scaffold model, cell migration was observed and compared to reference poly-ε-caprolactone fiber scaffolds. The aligned dECM fiber scaffold promoted the fastest and most efficient lesion closure, indicating superior cell guiding capabilities of dECM-based scaffolds. The strategy of combining decellularized tissues with controlled deposition of fibers to optimize biochemical and topographical cues opens the way for clinically relevant central nervous system scaffolding solutions.
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Affiliation(s)
- Lena Mungenast
- Institute for Chemistry and Bioanalytics, University of Applied Sciences FHNW, Hofackerstrasse 30, Muttenz 4132, Switzerland
| | - Ronya Nieminen
- Institute for Chemistry and Bioanalytics, University of Applied Sciences FHNW, Hofackerstrasse 30, Muttenz 4132, Switzerland
| | - Carine Gaiser
- Institute for Chemistry and Bioanalytics, University of Applied Sciences FHNW, Hofackerstrasse 30, Muttenz 4132, Switzerland
| | - Ana Bela Faia-Torres
- Institute for Chemistry and Bioanalytics, University of Applied Sciences FHNW, Hofackerstrasse 30, Muttenz 4132, Switzerland
| | - Jürgen Rühe
- Department of Microsystems Engineering, IMTEK, University of Freiburg, Freiburg 79110, Germany
| | - Laura Suter-Dick
- Institute for Chemistry and Bioanalytics, University of Applied Sciences FHNW, Hofackerstrasse 30, Muttenz 4132, Switzerland
- SCAHT: Swiss Centre for Applied Human Toxicology, Missionsstrasse 64, Basel 4055, Switzerland
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Yu H, Yang S, Li H, Wu R, Lai B, Zheng Q. Activating Endogenous Neurogenesis for Spinal Cord Injury Repair: Recent Advances and Future Prospects. Neurospine 2023; 20:164-180. [PMID: 37016865 PMCID: PMC10080446 DOI: 10.14245/ns.2245184.296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/29/2022] [Indexed: 04/03/2023] Open
Abstract
After spinal cord injury (SCI), endogenous neural stem cells are activated and migrate to the injury site where they differentiate into astrocytes, but they rarely differentiate into neurons. It is difficult for brain-derived information to be transmitted through the injury site after SCI because of the lack of neurons that can relay neural information through the injury site, and the functional recovery of adult mammals is difficult to achieve. The development of bioactive materials, tissue engineering, stem cell therapy, and physiotherapy has provided new strategies for the treatment of SCI and shown broad application prospects, such as promoting endogenous neurogenesis after SCI. In this review, we focus on novel approaches including tissue engineering, stem cell technology, and physiotherapy to promote endogenous neurogenesis and their therapeutic effects on SCI. Moreover, we explore the mechanisms and challenges of endogenous neurogenesis for the repair of SCI.
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Affiliation(s)
- Haiyang Yu
- Department of Orthopedics, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Shangbin Yang
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Haotao Li
- Department of Orthopedics, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Shantou University Medical College, Shantou, China
| | - Rongjie Wu
- Department of Orthopedics, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Shantou University Medical College, Shantou, China
| | - Biqin Lai
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou, China
- Co-corresponding Author Biqin Lai Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou, China
| | - Qiujian Zheng
- Department of Orthopedics, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Southern Medical University, Guangzhou, China
- Corresponding Author Qiujian Zheng Department of Orthopedics, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
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Lai BQ, Zeng X, Han WT, Che MT, Ding Y, Li G, Zeng YS. Stem cell-derived neuronal relay strategies and functional electrical stimulation for treatment of spinal cord injury. Biomaterials 2021; 279:121211. [PMID: 34710795 DOI: 10.1016/j.biomaterials.2021.121211] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 10/09/2021] [Accepted: 10/20/2021] [Indexed: 01/06/2023]
Abstract
The inability of adult mammals to recover function lost after severe spinal cord injury (SCI) has been known for millennia and is mainly attributed to a failure of brain-derived nerve fiber regeneration across the lesion. Potential approaches to re-establishing locomotor function rely on neuronal relays to reconnect the segregated neural networks of the spinal cord. Intense research over the past 30 years has focused on endogenous and exogenous neuronal relays, but progress has been slow and the results often controversial. Treatments with stem cell-derived neuronal relays alone or together with functional electrical stimulation offer the possibility of improved repair of neuronal networks. In this review, we focus on approaches to recovery of motor function in paralyzed patients after severe SCI based on novel therapies such as implantation of stem cell-derived neuronal relays and functional electrical stimulation. Recent research progress offers hope that SCI patients will one day be able to recover motor function and sensory perception.
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Affiliation(s)
- Bi-Qin Lai
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China
| | - Xiang Zeng
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China
| | - Wei-Tao Han
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Ming-Tian Che
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China
| | - Ying Ding
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Ge Li
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China
| | - Yuan-Shan Zeng
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China; Institute of Spinal Cord Injury, Sun Yat-sen University, Guangzhou, 510120, China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China; Guangdong Provincial Key Laboratory of Brain Function and Disease, Zhongshan, School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
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Lai B, Feng B, Che M, Wang L, Cai S, Huang M, Gu H, Jiang B, Ling E, Li M, Zeng X, Zeng Y. A Modular Assembly of Spinal Cord-Like Tissue Allows Targeted Tissue Repair in the Transected Spinal Cord. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800261. [PMID: 30250785 PMCID: PMC6145267 DOI: 10.1002/advs.201800261] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 06/08/2018] [Indexed: 05/02/2023]
Abstract
Tissue engineering-based neural construction holds promise in providing organoids with defined differentiation and therapeutic potentials. Here, a bioengineered transplantable spinal cord-like tissue (SCLT) is assembled in vitro by simulating the white matter and gray matter composition of the spinal cord using neural stem cell-based tissue engineering technique. Whether the organoid would execute targeted repair in injured spinal cord is evaluated. The integrated SCLT, assembled by white matter-like tissue (WMLT) module and gray matter-like tissue (GMLT) module, shares architectural, phenotypic, and functional similarities to the adult rat spinal cord. Organotypic coculturing with the dorsal root ganglion or muscle cells shows that the SCLT embraces spinal cord organogenesis potentials to establish connections with the targets, respectively. Transplantation of the SCLT into the transected spinal cord results in a significant motor function recovery of the paralyzed hind limbs in rats. Additionally, targeted spinal cord tissue repair is achieved by the modular design of SCLT, as evidenced by an increased remyelination in the WMLT area and an enlarged innervation in the GMLT area. More importantly, the pro-regeneration milieu facilitates the formation of a neuronal relay by the donor neurons, allowing the conduction of descending and ascending neural inputs.
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Affiliation(s)
- Bi‐Qin Lai
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat‐sen University)Ministry of EducationGuangzhou510080China
- Department of Histology and EmbryologyZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
- Co‐Innovation Center of NeuroregenerationNantong UniversityNantong226001China
| | - Bo Feng
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat‐sen University)Ministry of EducationGuangzhou510080China
| | - Ming‐Tian Che
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat‐sen University)Ministry of EducationGuangzhou510080China
| | - Lai‐Jian Wang
- Guangdong Provincial Key Laboratory of Brain Function and DiseaseZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
| | - Song Cai
- Department of Human AnatomyZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
| | - Meng‐Yao Huang
- Guangdong Provincial Key Laboratory of Brain Function and DiseaseZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
| | - Huai‐Yu Gu
- Department of Human AnatomyZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
| | - Bing Jiang
- Guangdong Provincial Key Laboratory of Brain Function and DiseaseZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
| | - Eng‐Ang Ling
- Department of AnatomyYong Loo Lin School of MedicineNational University of SingaporeSingapore117594Singapore
| | - Meng Li
- Neuroscience and Mental Health Research InstituteSchool of MedicineCardiff UniversityCardiffCF24 4HQUK
| | - Xiang Zeng
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat‐sen University)Ministry of EducationGuangzhou510080China
- Department of Histology and EmbryologyZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
- Institute of Spinal Cord InjurySun Yat‐sen UniversityGuangzhou510120China
| | - Yuan‐Shan Zeng
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat‐sen University)Ministry of EducationGuangzhou510080China
- Department of Histology and EmbryologyZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
- Co‐Innovation Center of NeuroregenerationNantong UniversityNantong226001China
- Guangdong Provincial Key Laboratory of Brain Function and DiseaseZhongshan School of MedicineSun Yat‐sen UniversityGuangzhou510080China
- Institute of Spinal Cord InjurySun Yat‐sen UniversityGuangzhou510120China
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Dias DO, Kim H, Holl D, Werne Solnestam B, Lundeberg J, Carlén M, Göritz C, Frisén J. Reducing Pericyte-Derived Scarring Promotes Recovery after Spinal Cord Injury. Cell 2018; 173:153-165.e22. [PMID: 29502968 PMCID: PMC5871719 DOI: 10.1016/j.cell.2018.02.004] [Citation(s) in RCA: 209] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 12/18/2017] [Accepted: 02/01/2018] [Indexed: 01/20/2023]
Abstract
CNS injury often severs axons. Scar tissue that forms locally at the lesion site is thought to block axonal regeneration, resulting in permanent functional deficits. We report that inhibiting the generation of progeny by a subclass of pericytes led to decreased fibrosis and extracellular matrix deposition after spinal cord injury in mice. Regeneration of raphespinal and corticospinal tract axons was enhanced and sensorimotor function recovery improved following spinal cord injury in animals with attenuated pericyte-derived scarring. Using optogenetic stimulation, we demonstrate that regenerated corticospinal tract axons integrated into the local spinal cord circuitry below the lesion site. The number of regenerated axons correlated with improved sensorimotor function recovery. In conclusion, attenuation of pericyte-derived fibrosis represents a promising therapeutic approach to facilitate recovery following CNS injury. Inhibition of pericyte proliferation reduces fibrotic scar tissue following injury Attenuated pericyte-derived scarring facilitates motor axon regeneration Regenerated axons functionally re-integrate into the local spinal circuitry Attenuated pericyte-derived scarring improves sensorimotor recovery
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Affiliation(s)
- David Oliveira Dias
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Hoseok Kim
- Department of Neuroscience, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Daniel Holl
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Beata Werne Solnestam
- Science for Life Laboratory, Karolinska Institutet Science Park, SE-171 65 Stockholm, Sweden
| | - Joakim Lundeberg
- Science for Life Laboratory, Karolinska Institutet Science Park, SE-171 65 Stockholm, Sweden
| | - Marie Carlén
- Department of Neuroscience, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Department of Biosciences and Nutrition, Karolinska Institutet, SE-141 83 Huddinge, Sweden
| | - Christian Göritz
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
| | - Jonas Frisén
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
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Lai BQ, Che MT, Du BL, Zeng X, Ma YH, Feng B, Qiu XC, Zhang K, Liu S, Shen HY, Wu JL, Ling EA, Zeng YS. Transplantation of tissue engineering neural network and formation of neuronal relay into the transected rat spinal cord. Biomaterials 2016; 109:40-54. [DOI: 10.1016/j.biomaterials.2016.08.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/13/2016] [Accepted: 08/02/2016] [Indexed: 12/24/2022]
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