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Zhao H, Xiong T, Chu Y, Hao W, Zhao T, Sun X, Zhuang Y, Chen B, Zhao Y, Wang J, Chen Y, Dai J. Biomimetic Dual-Network Collagen Fibers with Porous and Mechanical Cues Reconstruct Neural Stem Cell Niche via AKT/YAP Mechanotransduction after Spinal Cord Injury. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311456. [PMID: 38497893 DOI: 10.1002/smll.202311456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/21/2024] [Indexed: 03/19/2024]
Abstract
Tissue engineering scaffolds can mediate the maneuverability of neural stem cell (NSC) niche to influence NSC behavior, such as cell self-renewal, proliferation, and differentiation direction, showing the promising application in spinal cord injury (SCI) repair. Here, dual-network porous collagen fibers (PCFS) are developed as neurogenesis scaffolds by employing biomimetic plasma ammonia oxidase catalysis and conventional amidation cross-linking. Following optimizing the mechanical parameters of PCFS, the well-matched Young's modulus and physiological dynamic adaptability of PCFS (4.0 wt%) have been identified as a neurogenetic exciter after SCI. Remarkably, porous topographies and curving wall-like protrusions are generated on the surface of PCFS by simple and non-toxic CO2 bubble-water replacement. As expected, PCFS with porous and matched mechanical properties can considerably activate the cadherin receptor of NSCs and induce a series of serine-threonine kinase/yes-associated protein mechanotransduction signal pathways, encouraging cellular orientation, neuron differentiation, and adhesion. In SCI rats, implanted PCFS with matched mechanical properties further integrated into the injured spinal cords, inhibited the inflammatory progression and decreased glial and fibrous scar formation. Wall-like protrusions of PCFS drive multiple neuron subtypes formation and even functional neural circuits, suggesting a viable therapeutic strategy for nerve regeneration and functional recovery after SCI.
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Affiliation(s)
- Haitao Zhao
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, 511442, China
- 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
| | - Tiandi Xiong
- 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
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei, 230026, China
| | - Yun Chu
- 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
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei, 230026, China
| | - Wangping Hao
- 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
| | - Tongtong Zhao
- 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
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei, 230026, China
| | - Xinyue Sun
- 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
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei, 230026, China
| | - Yan Zhuang
- 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
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei, 230026, China
| | - Bing Chen
- State Key Laboratory of Molecular Development Biology, Institute of Genetics and Developmental Biology Chinese Academy of Sciences, Beijing, 100101, China
| | - Yannan Zhao
- State Key Laboratory of Molecular Development Biology, Institute of Genetics and Developmental Biology Chinese Academy of Sciences, Beijing, 100101, China
| | - Jun Wang
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, 511442, China
| | - Yanyan Chen
- 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
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei, 230026, China
| | - Jianwu Dai
- 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
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei, 230026, China
- State Key Laboratory of Molecular Development Biology, Institute of Genetics and Developmental Biology Chinese Academy of Sciences, Beijing, 100101, China
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Pushparaj K, Balasubramanian B, Pappuswamy M, Anand Arumugam V, Durairaj K, Liu WC, Meyyazhagan A, Park S. Out of Box Thinking to Tangible Science: A Benchmark History of 3D Bio-Printing in Regenerative Medicine and Tissues Engineering. Life (Basel) 2023; 13:life13040954. [PMID: 37109483 PMCID: PMC10145662 DOI: 10.3390/life13040954] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/31/2023] [Accepted: 04/04/2023] [Indexed: 04/09/2023] Open
Abstract
Advancements and developments in the 3D bioprinting have been promising and have met the needs of organ transplantation. Current improvements in tissue engineering constructs have enhanced their applications in regenerative medicines and other medical fields. The synergistic effects of 3D bioprinting have brought technologies such as tissue engineering, microfluidics, integrated tissue organ printing, in vivo bioprinted tissue implants, artificial intelligence and machine learning approaches together. These have greatly impacted interventions in medical fields, such as medical implants, multi-organ-on-chip models, prosthetics, drug testing tissue constructs and much more. This technological leap has offered promising personalized solutions for patients with chronic diseases, and neurodegenerative disorders, and who have been in severe accidents. This review discussed the various standing printing methods, such as inkjet, extrusion, laser-assisted, digital light processing, and stereolithographic 3D bioprinter models, adopted for tissue constructs. Additionally, the properties of natural, synthetic, cell-laden, dECM-based, short peptides, nanocomposite and bioactive bioinks are briefly discussed. Sequels of several tissue-laden constructs such as skin, bone and cartilage, liver, kidney, smooth muscles, cardiac and neural tissues are briefly analyzed. Challenges, future perspectives and the impact of microfluidics in resolving the limitations in the field, along with 3D bioprinting, are discussed. Certainly, a technology gap still exists in the scaling up, industrialization and commercialization of this technology for the benefit of stakeholders.
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Affiliation(s)
- Karthika Pushparaj
- Department of Zoology, School of Biosciences, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore 641 043, Tamil Nadu, India
| | | | - Manikantan Pappuswamy
- Department of Life Science, CHRIST (Deemed to be University), Bengaluru 560 076, Karnataka, India
| | - Vijaya Anand Arumugam
- Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Kaliannan Durairaj
- Department of Infection Biology, School of Medicine, Wonkwang University, lksan 54538, Republic of Korea
| | - Wen-Chao Liu
- Department of Animal Science, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Arun Meyyazhagan
- Department of Life Science, CHRIST (Deemed to be University), Bengaluru 560 076, Karnataka, India
| | - Sungkwon Park
- Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul 05006, Republic of Korea
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3
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Pourkhodadad S, Hosseinkazemi H, Bonakdar S, Nekounam H. Biomimetic engineered approaches for neural tissue engineering: Spinal cord injury. J Biomed Mater Res B Appl Biomater 2023; 111:701-716. [PMID: 36214332 DOI: 10.1002/jbm.b.35171] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 07/16/2022] [Accepted: 09/03/2022] [Indexed: 01/21/2023]
Abstract
The healing process for spinal cord injuries is complex and presents many challenges. Current advances in nerve regeneration are based on promising tissue engineering techniques, However, the chances of success depend on better mimicking the extracellular matrix (ECM) of neural tissue and better supporting neurons in a three-dimensional environment. The ECM provides excellent biological conditions, including desirable morphological features, electrical conductivity, and chemical compositions for neuron attachment, proliferation and function. This review outlines the rationale for developing a construct for neuron regrowth in spinal cord injury using appropriate biomaterials and scaffolding techniques.
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Affiliation(s)
| | - Hessam Hosseinkazemi
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Shahin Bonakdar
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran
| | - Houra Nekounam
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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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: 0] [Impact Index Per Article: 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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Chaudhari LR, Kawale AA, Desai SS, Kashte SB, Joshi MG. Pathophysiology of Spinal Cord Injury and Tissue Engineering Approach for Its Neuronal Regeneration: Current Status and Future Prospects. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1409:51-81. [PMID: 36038807 DOI: 10.1007/5584_2022_731] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
A spinal cord injury (SCI) is a very debilitating condition causing loss of sensory and motor function as well as multiple organ failures. Current therapeutic options like surgery and pharmacotherapy show positive results but are incapable of providing a complete cure for chronic SCI symptoms. Tissue engineering, including neuroprotective or growth factors, stem cells, and biomaterial scaffolds, grabs attention because of their potential for regeneration and ability to bridge the gap in the injured spinal cord (SC). Preclinical studies with tissue engineering showed functional recovery and neurorestorative effects. Few clinical trials show the safety and efficacy of the tissue engineering approach. However, more studies should be carried out for potential treatment modalities. In this review, we summarize the pathophysiology of SCI and its current treatment modalities, including surgical, pharmacological, and tissue engineering approaches following SCI in preclinical and clinical phases.
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Affiliation(s)
- Leena R Chaudhari
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kolhapur, Maharashtra, India
| | - Akshay A Kawale
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kolhapur, Maharashtra, India
| | - Sangeeta S Desai
- Department of Obstetrics and Gynecology, Dr. D Y Patil Medical College, Hospital and Research Institute, Kolhapur, Maharashtra, India
| | - Shivaji B Kashte
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kolhapur, Maharashtra, India
| | - Meghnad G Joshi
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kolhapur, Maharashtra, India.
- Stem Plus Biotech, SMK Commercial Complex, Sangli, Maharashtra, India.
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Struzyna LA, Browne KD, Burrell JC, Vélez WJG, Wofford KL, Kaplan HM, Murthy NS, Chen HI, Duda JE, España RA, Cullen DK. Axonal Tract Reconstruction Using a Tissue-Engineered Nigrostriatal Pathway in a Rat Model of Parkinson's Disease. Int J Mol Sci 2022; 23:13985. [PMID: 36430464 PMCID: PMC9692781 DOI: 10.3390/ijms232213985] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/02/2022] [Accepted: 11/05/2022] [Indexed: 11/16/2022] Open
Abstract
Parkinson's disease (PD) affects 1-2% of people over 65, causing significant morbidity across a progressive disease course. The classic PD motor deficits are caused by the degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNpc), resulting in the loss of their long-distance axonal projections that modulate striatal output. While contemporary treatments temporarily alleviate symptoms of this disconnection, there is no approach able to replace the nigrostriatal pathway. We applied microtissue engineering techniques to create a living, implantable tissue-engineered nigrostriatal pathway (TE-NSP) that mimics the architecture and function of the native pathway. TE-NSPs comprise a discrete population of dopaminergic neurons extending long, bundled axonal tracts within the lumen of hydrogel micro-columns. Neurons were isolated from the ventral mesencephalon of transgenic rats selectively expressing the green fluorescent protein in dopaminergic neurons with subsequent fluorescent-activated cell sorting to enrich a population to 60% purity. The lumen extracellular matrix and growth factors were varied to optimize cytoarchitecture and neurite length, while immunocytochemistry and fast-scan cyclic voltammetry (FSCV) revealed that TE-NSP axons released dopamine and integrated with striatal neurons in vitro. Finally, TE-NSPs were implanted to span the nigrostriatal pathway in a rat PD model with a unilateral 6-hydroxydopamine SNpc lesion. Immunohistochemistry and FSCV established that transplanted TE-NSPs survived, maintained their axonal tract projections, extended dopaminergic neurites into host tissue, and released dopamine in the striatum. This work showed proof of concept that TE-NSPs can reconstruct the nigrostriatal pathway, providing motivation for future studies evaluating potential functional benefits and long-term durability of this strategy. This pathway reconstruction strategy may ultimately replace lost neuroarchitecture and alleviate the cause of motor symptoms for PD patients.
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Affiliation(s)
- Laura A Struzyna
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kevin D Browne
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
| | - Justin C Burrell
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Wisberty J Gordián Vélez
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kathryn L Wofford
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
| | - Hilton M Kaplan
- New Jersey Center for Biomaterials, Rutgers University, Piscataway, NJ 08854, USA
| | - N Sanjeeva Murthy
- New Jersey Center for Biomaterials, Rutgers University, Piscataway, NJ 08854, USA
| | - H Isaac Chen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
| | - John E Duda
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Rodrigo A España
- Department of Neurobiology & Anatomy, College of Medicine, Drexel University, Philadelphia, PA 19129, USA
| | - D Kacy Cullen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA
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Martinez B, Peplow PV. Biomaterial and tissue-engineering strategies for the treatment of brain neurodegeneration. Neural Regen Res 2022; 17:2108-2116. [PMID: 35259816 PMCID: PMC9083174 DOI: 10.4103/1673-5374.336132] [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] [Indexed: 11/27/2022] Open
Abstract
The incidence of neurodegenerative diseases is increasing due to changing age demographics and the incidence of sports-related traumatic brain injury is tending to increase over time. Currently approved medicines for neurodegenerative diseases only temporarily reduce the symptoms but cannot cure or delay disease progression. Cell transplantation strategies offer an alternative approach to facilitating central nervous system repair, but efficacy is limited by low in vivo survival rates of cells that are injected in suspension. Transplanting cells that are attached to or encapsulated within a suitable biomaterial construct has the advantage of enhancing cell survival in vivo. A variety of biomaterials have been used to make constructs in different types that included nanoparticles, nanotubes, microspheres, microscale fibrous scaffolds, as well as scaffolds made of gels and in the form of micro-columns. Among these, Tween 80-methoxy poly(ethylene glycol)-poly(lactic-co-glycolic acid) nanoparticles loaded with rhynchophylline had higher transport across a blood-brain barrier model and decreased cell death in an in vitro model of Alzheimer’s disease than rhynchophylline or untreated nanoparticles with rhynchophylline. In an in vitro model of Parkinson’s disease, trans-activating transcriptor bioconjugated with zwitterionic polymer poly(2-methacryoyloxyethyl phosphorylcholine) and protein-based nanoparticles loaded with non-Fe hemin had a similar protective ability as free non-Fe hemin. A positive effect on neuron survival in several in vivo models of Parkinson’s disease was associated with the use of biomaterial constructs such as trans-activating transcriptor bioconjugated with zwitterionic polymer poly(2-methacryoyloxyethyl phosphorylcholine) and protein-based nanoparticles loaded with non-Fe hemin, carbon nanotubes with olfactory bulb stem cells, poly(lactic-co-glycolic acid) microspheres with attached DI-MIAMI cells, ventral midbrain neurons mixed with short fibers of poly-(L-lactic acid) scaffolds and reacted with xyloglucan with/without glial-derived neurotrophic factor, ventral midbrain neurons mixed with Fmoc-DIKVAV hydrogel with/without glial-derived neurotrophic factor. Further studies with in vivo models of Alzheimer’s disease and Parkinson’s disease are warranted especially using transplantation of cells in agarose micro-columns with an inner lumen filled with an appropriate extracellular matrix material.
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Affiliation(s)
- Bridget Martinez
- Department of Medicine, St. Georges University School of Medicine, Grenada
| | - Philip V Peplow
- Department of Anatomy, University of Otago, Dunedin, New Zealand
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Costa M, Lima R, Alves N, Silva N, Gasik M, Silva F, Bartolomeu F, Miranda G. Multi-material cellular structured orthopedic implants design: In vitro and bio-tribological performance. J Mech Behav Biomed Mater 2022; 131:105246. [DOI: 10.1016/j.jmbbm.2022.105246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/11/2022] [Accepted: 04/17/2022] [Indexed: 12/15/2022]
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Lu D, Yang Y, Zhang P, Ma Z, Li W, Song Y, Feng H, Yu W, Ren F, Li T, Zeng H, Wang J. Development and Application of Three-Dimensional Bioprinting Scaffold in the Repair of Spinal Cord Injury. Tissue Eng Regen Med 2022; 19:1113-1127. [PMID: 35767151 DOI: 10.1007/s13770-022-00465-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 05/13/2022] [Accepted: 05/15/2022] [Indexed: 01/04/2023] Open
Abstract
Spinal cord injury (SCI) is a disabling and destructive central nervous system injury that has not yet been successfully treated at this stage. Three-dimensional (3D) bioprinting has become a promising method to produce more biologically complex microstructures, which fabricate living neural constructs with anatomically accurate complex geometries and spatial distributions of neural stem cells, and this is critical in the treatment of SCI. With the development of 3D printing technology and the deepening of research, neural tissue engineering research using different printing methods, bio-inks, and cells to repair SCI has achieved certain results. Although satisfactory results have not yet been achieved, they have provided novel ideas for the clinical treatment of SCI. Considering the potential impact of 3D bioprinting technology on neural studies, this review focuses on 3D bioprinting methods widely used in SCI neural tissue engineering, and the latest technological applications of bioprinting of nerve tissues for the repair of SCI are discussed. In addition to introducing the recent progress, this work also describes the existing limitations and highlights emerging possibilities and future prospects in this field.
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Affiliation(s)
- Dezhi Lu
- School of Medicine, Shanghai University, Shanghai, 200444, China
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yang Yang
- Department of Rehabilitation Medicine, Shandong Provincial Third Hospital, Shandong, 250000, China
| | - Pingping Zhang
- School of Rehabilitation Medicine, Weifang Medical University, Weifang, 261053, China
| | - Zhenjiang Ma
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Wentao Li
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yan Song
- School of Rehabilitation Medicine, Weifang Medical University, Weifang, 261053, China
| | - Haiyang Feng
- School of Rehabilitation Medicine, Weifang Medical University, Weifang, 261053, China
| | - Wenqiang Yu
- School of Rehabilitation Medicine, Weifang Medical University, Weifang, 261053, China
| | - Fuchao Ren
- School of Rehabilitation Medicine, Weifang Medical University, Weifang, 261053, China
| | - Tao Li
- Department of Orthopaedics, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China.
| | - Hong Zeng
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Jinwu Wang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
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Ayar Z, Hassannejad Z, Shokraneh F, Saderi N, Rahimi-Movaghar V. Efficacy of hydrogels for repair of traumatic spinal cord injuries: A systematic review and meta-analysis. J Biomed Mater Res B Appl Biomater 2021; 110:1460-1478. [PMID: 34902215 DOI: 10.1002/jbm.b.34993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 11/27/2021] [Accepted: 12/05/2021] [Indexed: 11/10/2022]
Abstract
Hydrogels have been used as promising biomaterials for regeneration and control of pathophysiological events after traumatic spinal cord injuries (TSCI). However, no systematic comparison was conducted to show the effect of hydrogels on pathophysiological events. This study was designed to address this issue and evaluate the regenerative potential of hydrogels after TSCI. From 2857 records found in MEDLINE and EMBASE databases (April 23, 2021), 49 articles were included based on our inclusion/exclusion criteria. All studies discussing the effect of hydrogels on at least one of the main pathophysiological events after TSCI, including inflammation, axon growth, remyelination, glial scar formation, cavity size, and locomotor functional recovery were included. For statistical analysis, we used mean difference with 95% confidence intervals for locomotor functional recovery. The results showed that both natural and synthetic hydrogels could reduce the inflammatory response, hinder glial scar formation, and promote axon growth and vascularization. Also, the meta-analysis of the BBB score showed that using the hydrogels can lead to locomotor functional recovery. It was found that hydrogels are more efficient when used in transection and hemisection injuries (SMD: 1.89; 95% CI: 1.26, 2.52; P < .00001) compared to other injury models. The pre-formed implanted hydrogels (SMD: 1.79; 95% CI: 1.24, 2.34; P < .00001) found to be more effective compared to injection (SMD: 1.58; 95% CI: 0.64, 2.52; P = 0.0009). In conclusion, based on the available evidence, it was concluded that hydrogel composition as well as implantation method are dominant factors affecting tissue regeneration after TSCI and should be chosen according to the injury model in animal studies.
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Affiliation(s)
- Zahra Ayar
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Zahra Hassannejad
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell & Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farhad Shokraneh
- London Institute of Healthcare Engineering, King's College London, London, UK.,Cochrane Schizophrenia Group, Division of Psychiatry and Applied Psychology, School of Medicine, Institute of Mental Health, University of Nottingham, Nottingham, UK
| | - Narges Saderi
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Vafa Rahimi-Movaghar
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
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11
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Advanced approaches to regenerate spinal cord injury: The development of cell and tissue engineering therapy and combinational treatments. Biomed Pharmacother 2021; 146:112529. [PMID: 34906773 DOI: 10.1016/j.biopha.2021.112529] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 12/13/2022] Open
Abstract
Spinal cord injury (SCI) is a central nervous system (CNS) devastate event that is commonly caused by traumatic or non-traumatic events. The reinnervation of spinal cord axons is hampered through a myriad of devices counting on the damaged myelin, inflammation, glial scar, and defective inhibitory molecules. Unfortunately, an effective treatment to completely repair SCI and improve functional recovery has not been found. In this regard, strategies such as using cells, biomaterials, biomolecules, and drugs have been reported to be effective for SCI recovery. Furthermore, recent advances in combinatorial treatments, which address various aspects of SCI pathophysiology, provide optimistic outcomes for spinal cord regeneration. According to the global importance of SCI, the goal of this article review is to provide an overview of the pathophysiology of SCI, with an emphasis on the latest modes of intervention and current advanced approaches for the treatment of SCI, in conjunction with an assessment of combinatorial approaches in preclinical and clinical trials. So, this article can give scientists and clinicians' clues to help them better understand how to construct preclinical and clinical studies that could lead to a breakthrough in spinal cord regeneration.
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Vigani B, Valentino C, Cavalloro V, Catenacci L, Sorrenti M, Sandri G, Bonferoni MC, Bozzi C, Collina S, Rossi S, Ferrari F. Gellan-Based Composite System as a Potential Tool for the Treatment of Nervous Tissue Injuries: Cross-Linked Electrospun Nanofibers Embedded in a RC-33-Loaded Freeze-Dried Matrix. Pharmaceutics 2021; 13:pharmaceutics13020164. [PMID: 33530643 PMCID: PMC7912322 DOI: 10.3390/pharmaceutics13020164] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/15/2021] [Accepted: 01/21/2021] [Indexed: 12/31/2022] Open
Abstract
Injuries to the nervous system affect more than one billion people worldwide, and dramatically impact on the patient’s quality of life. The present work aimed to design and develop a gellan gum (GG)-based composite system for the local delivery of the neuroprotective sigma-1 receptor agonist, 1-[3-(1,1′-biphen)-4-yl] butylpiperidine (RC-33), as a potential tool for the treatment of tissue nervous injuries. The system, consisting of cross-linked electrospun nanofibers embedded in a RC-33-loaded freeze-dried matrix, was designed to bridge the lesion gap, control drug delivery and enhance axonal regrowth. The gradual matrix degradation should ensure the progressive interaction between the inner fibrous mat and the surrounding cellular environment. Nanofibers, prepared by electrospinning polymeric solutions containing GG, two different grades of poly (ethylene oxide) and poloxamer, were cross-linked with calcium ions. GG-based matrices, loaded with different amounts of RC-33, were prepared by freeze-drying. Dialysis studies and solid-state characterization pointed out the formation of an interaction product between GG and RC-33. RC-33-loaded freeze-dried matrices were characterized by the capability to absorb a high buffer content, forming a gel with marked viscoelastic properties, and by RC-33 controlled release properties. The presence of cross-linked nanofibers increased matrix mechanical resistance.
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3D bioprinting applications in neural tissue engineering for spinal cord injury repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110741. [PMID: 32204049 DOI: 10.1016/j.msec.2020.110741] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/05/2020] [Accepted: 02/10/2020] [Indexed: 01/01/2023]
Abstract
Spinal cord injury (SCI) is a disease of the central nervous system (CNS) that has not yet been treated successfully. In the United States, almost 450,000 people suffer from SCI. Despite the development of many clinical treatments, therapeutics are still at an early stage for a successful bridging of damaged nerve spaces and complete recovery of nerve functions. Biomimetic 3D scaffolds have been an effective option in repairing the damaged nervous system. 3D scaffolds allow improved host tissue engraftment and new tissue development by supplying physical support to ease cell function. Recently, 3D bioprinting techniques that may easily regulate the dimension and shape of the 3D tissue scaffold and are capable of producing scaffolds with cells have attracted attention. Production of biologically more complex microstructures can be achieved by using 3D bioprinting technology. Particularly in vitro modeling of CNS tissues for in vivo transplantation is critical in the treatment of SCI. Considering the potential impact of 3D bioprinting technology on neural studies, this review focus on 3D bioprinting methods, bio-inks, and cells widely used in neural tissue engineering and the latest technological applications of bioprinting of nerve tissues for the repair of SCI are discussed.
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Harris JP, Burrell JC, Struzyna LA, Chen HI, Serruya MD, Wolf JA, Duda JE, Cullen DK. Emerging regenerative medicine and tissue engineering strategies for Parkinson's disease. NPJ Parkinsons Dis 2020; 6:4. [PMID: 31934611 PMCID: PMC6949278 DOI: 10.1038/s41531-019-0105-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 11/25/2019] [Indexed: 02/07/2023] Open
Abstract
Parkinson's disease (PD) is the second most common progressive neurodegenerative disease, affecting 1-2% of people over 65. The classic motor symptoms of PD result from selective degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNpc), resulting in a loss of their long axonal projections to the striatum. Current treatment strategies such as dopamine replacement and deep brain stimulation (DBS) can only minimize the symptoms of nigrostriatal degeneration, not directly replace the lost pathway. Regenerative medicine-based solutions are being aggressively pursued with the goal of restoring dopamine levels in the striatum, with several emerging techniques attempting to reconstruct the entire nigrostriatal pathway-a key goal to recreate feedback pathways to ensure proper dopamine regulation. Although many pharmacological, genetic, and optogenetic treatments are being developed, this article focuses on the evolution of transplant therapies for the treatment of PD, including fetal grafts, cell-based implants, and more recent tissue-engineered constructs. Attention is given to cell/tissue sources, efficacy to date, and future challenges that must be overcome to enable robust translation into clinical use. Emerging regenerative medicine therapies are being developed using neurons derived from autologous stem cells, enabling the construction of patient-specific constructs tailored to their particular extent of degeneration. In the upcoming era of restorative neurosurgery, such constructs may directly replace SNpc neurons, restore axon-based dopaminergic inputs to the striatum, and ameliorate motor deficits. These solutions may provide a transformative and scalable solution to permanently replace lost neuroanatomy and improve the lives of millions of people afflicted by PD.
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Affiliation(s)
- James P. Harris
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
| | - Justin C. Burrell
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA USA
| | - Laura A. Struzyna
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA USA
| | - H. Isaac Chen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
| | - Mijail D. Serruya
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA USA
| | - John A. Wolf
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
| | - John E. Duda
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
- Parkinson’s Disease Research, Education, and Clinical Center (PADRECC), Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
| | - D. Kacy Cullen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA USA
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Choi JH, Lee W, Song C, Moon BK, Yoon SJ, Neves NM, Reis RL, Khang G. Application of Gellan Gum-Based Scaffold for Regenerative Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1249:15-37. [PMID: 32602088 DOI: 10.1007/978-981-15-3258-0_2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gellan gum (GG) is a linear microbial exopolysaccharide which is derived naturally by the fermentation process of Pseudomonas elodea. Application of GG in tissue engineering and regeneration medicine (TERM) is already over 10 years and has shown great potential. Although this biomaterial has many advantages such as biocompatibility, biodegradability, nontoxic in nature, and physical stability in the presence of cations, a variety of modification methods have been suggested due to some disadvantages such as mechanical properties, high gelation temperature, and lack of attachment sites. In this review, the application of GG-based scaffold for tissue engineering and approaches to improve GG properties are discussed. Furthermore, a recent trend and future perspective of GG-based scaffold are highlighted.
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Affiliation(s)
- Joo Hee Choi
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Jeonju, South Korea
| | - Wonchan Lee
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Jeonju, South Korea
| | - Cheolui Song
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Jeonju, South Korea
| | - Byung Kwan Moon
- Department of Polymer Nano Science & Technology, Jeonbuk National University, Jeonju-si, Jeollabuk-do, Republic of Korea
| | - Sun-Jung Yoon
- Department of Orthopedic Surgery, Medical School, Jeonbuk National University, Jeonju-si, Republic of Korea
| | - Nuno M Neves
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Guimarães, Portugal
- ICVS/3B's - PT Government Associated Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Guimarães, Portugal
- ICVS/3B's - PT Government Associated Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal
| | - Gilson Khang
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Jeonju, South Korea.
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16
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Li W, Huang A, Zhong Y, Huang L, Yang J, Zhou C, Zhou L, Zhang Y, Fu G. Laminin-modified gellan gum hydrogels loaded with the nerve growth factor to enhance the proliferation and differentiation of neuronal stem cells. RSC Adv 2020; 10:17114-17122. [PMID: 35521457 PMCID: PMC9053442 DOI: 10.1039/d0ra01723j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 04/06/2020] [Indexed: 01/07/2023] Open
Abstract
The reconstruction of peripheral nerves has lately received great attention as many patients suffer from peripheral nerve injury every year around the world. However, the damage to human nerve cells has different degrees of irreversibility due to a slow growth speed and low adhesion with the surrounding tissues. In an effort to overcome this challenge, we applied novel laminin (LN)-modified thiolated gellan gum (TGG) and loaded the nerve growth factor (NGF) as a tissue engineering scaffold for facilitating neuronal stem cell proliferation via a synergy effect for the ERK–MAPK pathway. TGG was characterized by 1H NMR spectroscopy and scanning electron microscopy, and its rheological behavior was also studied. The NGF release curve fitted the Korsmeyer–Peppas model and belonged to a Fickian diffusion-controlled release mechanism. The neuronal stem cells from newborn SD rats could adhere tightly and proliferate at a relatively rapid speed, showing excellent biocompatibility and the ability to promote growth in the modified TGG. LN and NGF could decrease the apoptosis effects of neuronal stem cells, as shown via the flow cytometry results. In a three-dimensional culture environment, LN and NGF could facilitate neuronal stem cells to differentiate into neurons, as proved by immunofluorescence, q-PCR, and western blot analyses. Therefore, the rational design of the TGG gel loaded with NGF has promising applications in the reconstruction of peripheral nerves. Laminin-modified thiolated gellan gum and loaded with the nerve growth factor in facilitateding neuronal stem cell proliferation and differentiation.![]()
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Affiliation(s)
- Wenqiang Li
- Engineering Technology Research Center for Sports Assistive Devices of Guangdong
- Guangzhou Sport University
- Guangzhou
- China
| | - Anfei Huang
- The First Affiliated Hospital
- Jinan University
- Guangzhou
- China
| | - Yanheng Zhong
- The First Affiliated Hospital
- Jinan University
- Guangzhou
- China
| | - Lin Huang
- Engineering Technology Research Center for Sports Assistive Devices of Guangdong
- Guangzhou Sport University
- Guangzhou
- China
| | - Jing Yang
- Engineering Technology Research Center for Sports Assistive Devices of Guangdong
- Guangzhou Sport University
- Guangzhou
- China
| | - Changren Zhou
- Department of Materials Science and Engineering
- Jinan University
- Guangzhou
- China
| | - Lin Zhou
- The First Affiliated Hospital
- Jinan University
- Guangzhou
- China
| | - Yanling Zhang
- Department of Ultrasound
- Third Affiliated Hospital
- Sun Yat-sen University
- The People's Republic of China
| | - Guo Fu
- The First Affiliated Hospital
- Jinan University
- Guangzhou
- China
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17
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Tan GZ, Zhou Y. Electrospinning of biomimetic fibrous scaffolds for tissue engineering: a review. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1636248] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- George Z. Tan
- Department of Industrial, Manufacturing and Systems Engineering, Texas Tech University, Lubbock, TX, USA
| | - Yingge Zhou
- Department of Industrial, Manufacturing and Systems Engineering, Texas Tech University, Lubbock, TX, USA
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18
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Costa M, Lima R, Melo-Fonseca F, Bartolomeu F, Alves N, Miranda A, Gasik M, Silva F, Silva N, Miranda G. Development of β-TCP-Ti6Al4V structures: Driving cellular response by modulating physical and chemical properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:705-716. [DOI: 10.1016/j.msec.2019.01.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 01/04/2019] [Accepted: 01/04/2019] [Indexed: 01/05/2023]
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Zhang Q, Shi B, Ding J, Yan L, Thawani JP, Fu C, Chen X. Polymer scaffolds facilitate spinal cord injury repair. Acta Biomater 2019; 88:57-77. [PMID: 30710714 DOI: 10.1016/j.actbio.2019.01.056] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 01/10/2019] [Accepted: 01/28/2019] [Indexed: 12/23/2022]
Abstract
During the past decades, improving patient neurological recovery following spinal cord injury (SCI) has remained a challenge. An effective treatment for SCI would not only reduce fractured elements and isolate developing local glial scars to promote axonal regeneration but also ameliorate secondary effects, including inflammation, apoptosis, and necrosis. Three-dimensional (3D) scaffolds provide a platform in which these mechanisms can be addressed in a controlled manner. Polymer scaffolds with favorable biocompatibility and appropriate mechanical properties have been engineered to minimize cicatrization, customize drug release, and ensure an unobstructed space to promote cell growth and differentiation. These properties make polymer scaffolds an important potential therapeutic platform. This review highlights the recent developments in polymer scaffolds for SCI engineering. STATEMENT OF SIGNIFICANCE: How to improve the efficacy of neurological recovery after spinal cord injury (SCI) is always a challenge. Tissue engineering provides a promising strategy for SCI repair, and scaffolds are one of the most important elements in addition to cells and inducing factors. The review highlights recent development and future prospects in polymer scaffolds for SCI therapy. The review will guide future studies by outlining the requirements and characteristics of polymer scaffold technologies employed against SCI. Additionally, the peculiar properties of polymer materials used in the therapeutic process of SCI also have guiding significance to other tissue engineering approaches.
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20
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Schnabel‐Lubovsky M, Kossover O, Melino S, Nanni F, Talmon Y, Seliktar D. Visualizing cell‐laden fibrin‐based hydrogels using cryogenic scanning electron microscopy and confocal microscopy. J Tissue Eng Regen Med 2019; 13:587-598. [DOI: 10.1002/term.2813] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 10/08/2018] [Accepted: 12/17/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Maya Schnabel‐Lubovsky
- Department of Biomedical EngineeringTechnion—Israel Institute of Technology Haifa Israel
- Department of Chemical EngineeringTechnion—Israel Institute of Technology Haifa Israel
| | - Olga Kossover
- Department of Biomedical EngineeringTechnion—Israel Institute of Technology Haifa Israel
| | - Sonia Melino
- Department of Chemical Science and TechnologiesUniversity of Rome Tor Vergata Rome Italy
| | - Francesca Nanni
- Enterprise Engineering DepartmentUniversity of Rome Tor Vergata Rome Italy
- INSTMItalian Interuniversity Consortium on Materials Science and Technology 50121 Florence Italy
| | - Yeshayahu Talmon
- Department of Chemical EngineeringTechnion—Israel Institute of Technology Haifa Israel
- Russell Berrie Nanotechnology Institute (RBNI)Technion—Israel Institute of Technology Haifa Israel
| | - Dror Seliktar
- Department of Biomedical EngineeringTechnion—Israel Institute of Technology Haifa Israel
- Russell Berrie Nanotechnology Institute (RBNI)Technion—Israel Institute of Technology Haifa Israel
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21
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Myelinated axons and functional blood vessels populate mechanically compliant rGO foams in chronic cervical hemisected rats. Biomaterials 2019; 192:461-474. [DOI: 10.1016/j.biomaterials.2018.11.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/06/2018] [Accepted: 11/13/2018] [Indexed: 11/18/2022]
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22
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Struzyna LA, Browne KD, Brodnik ZD, Burrell JC, Harris JP, Chen HI, Wolf JA, Panzer KV, Lim J, Duda JE, España RA, Cullen DK. Tissue engineered nigrostriatal pathway for treatment of Parkinson's disease. J Tissue Eng Regen Med 2018; 12:1702-1716. [PMID: 29766664 PMCID: PMC6416379 DOI: 10.1002/term.2698] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 02/05/2018] [Accepted: 05/03/2018] [Indexed: 01/05/2023]
Abstract
The classic motor deficits of Parkinson's disease are caused by degeneration of dopaminergic neurons in the substantia nigra pars compacta, resulting in the loss of their long-distance axonal projections that modulate the striatum. Current treatments only minimize the symptoms of this disconnection as there is no approach capable of replacing the nigrostriatal pathway. We are applying microtissue engineering techniques to create living, implantable constructs that mimic the architecture and function of the nigrostriatal pathway. These constructs consist of dopaminergic neurons with long axonal tracts encased within hydrogel microcolumns. Microcolumns were seeded with dopaminergic neuronal aggregates, while lumen extracellular matrix, growth factors, and end targets were varied to optimize cytoarchitecture. We found a 10-fold increase in axonal outgrowth from aggregates versus dissociated neurons, resulting in remarkable axonal lengths of over 6 mm by 14 days and 9 mm by 28 days in vitro. Axonal extension was also dependent upon lumen extracellular matrix, but did not depend on growth factor enrichment or neuronal end target presence. Evoked dopamine release was measured via fast scan cyclic voltammetry and synapse formation with striatal neurons was observed in vitro. Constructs were microinjected to span the nigrostriatal pathway in rats, revealing survival of implanted neurons while maintaining their axonal projections within the microcolumn. Lastly, these constructs were generated with dopaminergic neurons differentiated from human embryonic stem cells. This strategy may improve Parkinson's disease treatment by simultaneously replacing lost dopaminergic neurons in the substantia nigra and reconstructing their long-projecting axonal tracts to the striatum.
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Affiliation(s)
- Laura A. Struzyna
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia PA
| | - Kevin D. Browne
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
| | - Zachary D. Brodnik
- Department of Neurobiology & Anatomy, College of Medicine, Drexel University, Philadelphia, PA
| | - Justin C. Burrell
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia PA
| | - James P. Harris
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
| | - H. Isaac Chen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
| | - John A. Wolf
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
| | - Kate V. Panzer
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia PA
| | - James Lim
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
| | - John E. Duda
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Rodrigo A. España
- Department of Neurobiology & Anatomy, College of Medicine, Drexel University, Philadelphia, PA
| | - D. Kacy Cullen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA
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23
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Stevens LR, Gilmore KJ, Wallace GG, In Het Panhuis M. Tissue engineering with gellan gum. Biomater Sci 2018; 4:1276-90. [PMID: 27426524 DOI: 10.1039/c6bm00322b] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Engineering complex tissues for research and clinical applications relies on high-performance biomaterials that are amenable to biofabrication, maintain mechanical integrity, support specific cell behaviours, and, ultimately, biodegrade. In most cases, complex tissues will need to be fabricated from not one, but many biomaterials, which collectively fulfill these demanding requirements. Gellan gum is an anionic polysaccharide with potential to fill several key roles in engineered tissues, particularly after modification and blending. This review focuses on the present state of research into gellan gum, from its origins, purification and modification, through processing and biofabrication options, to its performance as a cell scaffold for both soft tissue and load bearing applications. Overall, we find gellan gum to be a highly versatile backbone material for tissue engineering research, upon which a broad array of form and functionality can be built.
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Affiliation(s)
- L R Stevens
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - K J Gilmore
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - G G Wallace
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - M In Het Panhuis
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW 2522, Australia. and Soft Materials Group, School of Chemistry, University of Wollongong, NSW 2522, Australia
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24
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Oderinde O, Liu S, Li K, Kang M, Imtiaz H, Yao F, Fu G. Multifaceted polymeric materials in three-dimensional processing (3DP) technologies: Current progress and prospects. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4281] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Olayinka Oderinde
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Shunli Liu
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Kewen Li
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Mengmeng Kang
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Hussain Imtiaz
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Fang Yao
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Guodong Fu
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
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25
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Lee S, Esworthy T, Stake S, Miao S, Zuo YY, Harris BT, Zhang LG. Advances in 3D Bioprinting for Neural Tissue Engineering. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201700213] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Se‐Jun Lee
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
| | - Timothy Esworthy
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
| | - Seth Stake
- Department of Medicine George Washington University Washington DC 20052 USA
| | - Shida Miao
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
| | - Yi Y. Zuo
- Department of Mechanical Engineering University of Hawaii at Manoa Honolulu HI 96822 USA
| | - Brent T. Harris
- Department of Neurology and Pathology Georgetown University Washington DC 20007 USA
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
- Department of Medicine George Washington University Washington DC 20052 USA
- Department of Biomedical Engineering George Washington University Washington DC 20052 USA
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Prospects of Natural Polymeric Scaffolds in Peripheral Nerve Tissue-Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1077:501-525. [DOI: 10.1007/978-981-13-0947-2_27] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Influence of Different ECM-Like Hydrogels on Neurite Outgrowth Induced by Adipose Tissue-Derived Stem Cells. Stem Cells Int 2017; 2017:6319129. [PMID: 29333166 PMCID: PMC5733162 DOI: 10.1155/2017/6319129] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/22/2017] [Accepted: 09/18/2017] [Indexed: 01/19/2023] Open
Abstract
Mesenchymal stem cells (MSCs) have been proposed for spinal cord injury (SCI) applications due to their capacity to secrete growth factors and vesicles—secretome—that impacts important phenomena in SCI regeneration. To improve MSC survival into SCI sites, hydrogels have been used as transplantation vehicles. Herein, we hypothesized if different hydrogels could interact differently with adipose tissue-derived MSCs (ASCs). The efficacy of three natural hydrogels, gellan gum (functionalized with a fibronectin peptide), collagen, and a hydrogel rich in laminin epitopes (NVR-gel) in promoting neuritogenesis (alone and cocultured with ASCs), was evaluated in the present study. Their impact on ASC survival, metabolic activity, and gene expression was also evaluated. Our results indicated that all hydrogels supported ASC survival and viability, being this more evident for the functionalized GG hydrogels. Moreover, the presence of different ECM-derived biological cues within the hydrogels appears to differently affect the mRNA levels of growth factors involved in neuronal survival, differentiation, and axonal outgrowth. All the hydrogel-based systems supported axonal growth mediated by ASCs, but this effect was more robust in functionalized GG. The data herein presented highlights the importance of biological cues within hydrogel-based biomaterials as possible modulators of ASC secretome and its effects for SCI applications.
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Struzyna LA, Adewole DO, Gordián-Vélez WJ, Grovola MR, Burrell JC, Katiyar KS, Petrov D, Harris JP, Cullen DK. Anatomically Inspired Three-dimensional Micro-tissue Engineered Neural Networks for Nervous System Reconstruction, Modulation, and Modeling. J Vis Exp 2017. [PMID: 28605376 DOI: 10.3791/55609] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Functional recovery rarely occurs following injury or disease-induced degeneration within the central nervous system (CNS) due to the inhibitory environment and the limited capacity for neurogenesis. We are developing a strategy to simultaneously address neuronal and axonal pathway loss within the damaged CNS. This manuscript presents the fabrication protocol for micro-tissue engineered neural networks (micro-TENNs), implantable constructs consisting of neurons and aligned axonal tracts spanning the extracellular matrix (ECM) lumen of a preformed hydrogel cylinder hundreds of microns in diameter that may extend centimeters in length. Neuronal aggregates are delimited to the extremes of the three-dimensional encasement and are spanned by axonal projections. Micro-TENNs are uniquely poised as a strategy for CNS reconstruction, emulating aspects of brain connectome cytoarchitecture and potentially providing means for network replacement. The neuronal aggregates may synapse with host tissue to form new functional relays to restore and/or modulate missing or damaged circuitry. These constructs may also act as pro-regenerative "living scaffolds" capable of exploiting developmental mechanisms for cell migration and axonal pathfinding, providing synergistic structural and soluble cues based on the state of regeneration. Micro-TENNs are fabricated by pouring liquid hydrogel into a cylindrical mold containing a longitudinally centered needle. Once the hydrogel has gelled, the needle is removed, leaving a hollow micro-column. An ECM solution is added to the lumen to provide an environment suitable for neuronal adhesion and axonal outgrowth. Dissociated neurons are mechanically aggregated for precise seeding within one or both ends of the micro-column. This methodology reliably produces self-contained miniature constructs with long-projecting axonal tracts that may recapitulate features of brain neuroanatomy. Synaptic immunolabeling and genetically encoded calcium indicators suggest that micro-TENNs possess extensive synaptic distribution and intrinsic electrical activity. Consequently, micro-TENNs represent a promising strategy for targeted neurosurgical reconstruction of brain pathways and may also be applied as biofidelic models to study neurobiological phenomena in vitro.
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Affiliation(s)
- Laura A Struzyna
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania; Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center
| | - Dayo O Adewole
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania; Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center
| | - Wisberty J Gordián-Vélez
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania; Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center
| | - Michael R Grovola
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center
| | - Justin C Burrell
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center
| | - Kritika S Katiyar
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center; School of Biomedical Engineering, Drexel University
| | - Dmitriy Petrov
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center
| | - James P Harris
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center
| | - D Kacy Cullen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania; Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center;
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A combination of GDNF and hUCMSC transplantation loaded on SF/AGs composite scaffolds for spinal cord injury repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 74:230-237. [DOI: 10.1016/j.msec.2016.12.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/26/2016] [Accepted: 12/04/2016] [Indexed: 12/14/2022]
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Koivisto JT, Joki T, Parraga JE, Pääkkönen R, Ylä-Outinen L, Salonen L, Jönkkäri I, Peltola M, Ihalainen TO, Narkilahti S, Kellomäki M. Bioamine-crosslinked gellan gum hydrogel for neural tissue engineering. Biomed Mater 2017; 12:025014. [DOI: 10.1088/1748-605x/aa62b0] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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31
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Gomathysankar S, Halim AS, Yaacob NS, Noor NM, Mohamed M. Compatibility of Porous Chitosan Scaffold with the Attachment and Proliferation of human Adipose-Derived Stem Cells In Vitro. J Stem Cells Regen Med 2016. [PMID: 28096632 PMCID: PMC5227107 DOI: 10.46582/jsrm.1202012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Adipose-derived stem cells (ASCs) have potential applications in the repair and regeneration of various tissues and organs. The use of various scaffold materials as an excellent template for mimicking the extracellular matrix to induce the attachment and proliferation of different cell types has always been of interest in the field of tissue engineering because ideal biomaterials are in great demand. Chitosan, a marine polysaccharide, have wide clinical applications and it acts as a promising scaffold for cell migration and proliferation. ASCs, with their multi-differentiation potential, and chitosan, with its great biocompatibility with ASCs, were investigated in the present study. ASCs were isolated and were characterized by two different methods: immunocytochemistry and flow cytometry, using the mesenchymal stem cell markers CD90, CD105, CD73 and CD29. The ASCs were then induced to differentiate into adipogenic, osteogenic and chondrogenic lineages. These ASCs were incorporated into a porous chitosan scaffold (PCS), and their structural morphology was studied using a scanning electron microscope and hematoxylin and eosin staining. The proliferation rate of the ASCs on the PCS was assessed using a PrestoBlue viability assay. The results indicated that the PCS provides an excellent template for the adhesion and proliferation of ASCs. Thus, this study revealed that PCS is a promising biomaterial for inducing the proliferation of ASCs, which could lead to successful tissue reconstruction in the field of tissue engineering.
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Affiliation(s)
- Sankaralakshmi Gomathysankar
- Reconstructive Sciences Unit, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Ahmad Sukari Halim
- Reconstructive Sciences Unit, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Nik Soriani Yaacob
- Department of Chemical Pathology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang kerian, Kelantan, Malaysia
| | - Norhayati Mohd Noor
- Reconstructive Sciences Unit, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Mohaini Mohamed
- Reconstructive Sciences Unit, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
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Sang J, Li X, Shao Y, Li Z, Fu J. Controlled Tubular Unit Formation from Collagen Film for Modular Tissue Engineering. ACS Biomater Sci Eng 2016; 3:2860-2868. [DOI: 10.1021/acsbiomaterials.6b00468] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jianming Sang
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward Street, Ann
Arbor, Michigan 48109, United States
| | - Xiang Li
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward Street, Ann
Arbor, Michigan 48109, United States
| | - Yue Shao
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward Street, Ann
Arbor, Michigan 48109, United States
| | - Zida Li
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward Street, Ann
Arbor, Michigan 48109, United States
| | - Jianping Fu
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward Street, Ann
Arbor, Michigan 48109, United States
- Michigan Center for Integrative Research
in Critical Care, University of Michigan, 2800 Plymouth Road, Ann Arbor, Michigan 48109, United States
- Department
of Biomedical Engineering, University of Michigan, 2200 Bonisteel
Boulevard, Ann Arbor, Michigan 48109, United States
- Department of Cell and Developmental Biology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, Michigan 48109, United States
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Russell LN, Lampe KJ. Engineering Biomaterials to Influence Oligodendroglial Growth, Maturation, and Myelin Production. Cells Tissues Organs 2016; 202:85-101. [PMID: 27701172 DOI: 10.1159/000446645] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2016] [Indexed: 11/19/2022] Open
Abstract
Millions of people suffer from damage or disease to the nervous system that results in a loss of myelin, such as through a spinal cord injury or multiple sclerosis. Diminished myelin levels lead to further cell death in which unmyelinated neurons die. In the central nervous system, a loss of myelin is especially detrimental because of its poor ability to regenerate. Cell therapies such as stem or precursor cell injection have been investigated as stem cells are able to grow and differentiate into the damaged cells; however, stem cell injection alone has been unsuccessful in many areas of neural regeneration. Therefore, researchers have begun exploring combined therapies with biomaterials that promote cell growth and differentiation while localizing cells in the injured area. The regrowth of myelinating oligodendrocytes from neural stem cells through a biomaterials approach may prove to be a beneficial strategy following the onset of demyelination. This article reviews recent advancements in biomaterial strategies for the differentiation of neural stem cells into oligodendrocytes, and presents new data indicating appropriate properties for oligodendrocyte precursor cell growth. In some cases, an increase in oligodendrocyte differentiation alongside neurons is further highlighted for functional improvements where the biomaterial was then tested for increased myelination both in vitro and in vivo.
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Teixeira FG, Vasconcelos NL, Gomes ED, Marques F, Sousa JC, Sousa N, Silva NA, Assunção-Silva R, Lima R, Salgado AJ. Bioengineered cell culture systems of central nervous system injury and disease. Drug Discov Today 2016; 21:1456-1463. [DOI: 10.1016/j.drudis.2016.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/02/2016] [Accepted: 04/21/2016] [Indexed: 01/10/2023]
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Combination of a peptide-modified gellan gum hydrogel with cell therapy in a lumbar spinal cord injury animal model. Biomaterials 2016; 105:38-51. [PMID: 27505621 DOI: 10.1016/j.biomaterials.2016.07.019] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/09/2016] [Accepted: 07/16/2016] [Indexed: 12/30/2022]
Abstract
Spinal Cord Injury (SCI) is a highly incapacitating condition for which there is still no cure. Current clinical approaches are mainly based on palliative care, so there is a need to find possible treatments to SCI. Cellular transplantation is regarded with great expectation due to the therapeutic potential of cells such as Adipose tissue-derived Stromal/Stem Cells (ASCs) or Olfactory Ensheathing Cells (OECs). Both are accessible sources and present positive paracrine and cell-to-cell interactions, previously reported by our group. Additionally, biomaterials such as hydrogels have been applied in SCI repair with promising results. We propose to combine a GRGDS-modified gellan gum hydrogel with ASCs and OECs in order to promote SCI regeneration. In vitro, ASCs and OECs could be co-cultured within GG-GRGDS hydrogels inducing a more robust neurite outgrowth when compared to controls. In vivo experiments in a hemisection SCI rat model revealed that the administration of ASCs and OECs encapsulated in a GG-GRGDS hydrogel led to significant motor improvements when compared to both control (SCI) and hydrogel alone (GG-GRGDS) groups. This was accompanied by a decreased infiltration of inflammatory cells and astrocytes, and by an increased intensity of neurofilament. These results suggest evident gains induced by the encapsulation of ASCs and OECs in GG-GRGDS based hydrogels.
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36
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Akkineni AR, Ahlfeld T, Funk A, Waske A, Lode A, Gelinsky M. Highly Concentrated Alginate-Gellan Gum Composites for 3D Plotting of Complex Tissue Engineering Scaffolds. Polymers (Basel) 2016; 8:E170. [PMID: 30979263 PMCID: PMC6432352 DOI: 10.3390/polym8050170] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 04/14/2016] [Accepted: 04/18/2016] [Indexed: 12/21/2022] Open
Abstract
In tissue engineering, additive manufacturing (AM) technologies have brought considerable progress as they allow the fabrication of three-dimensional (3D) structures with defined architecture. 3D plotting is a versatile, extrusion-based AM technology suitable for processing a wide range of biomaterials including hydrogels. In this study, composites of highly concentrated alginate and gellan gum were prepared in order to combine the excellent printing properties of alginate with the favorable gelling characteristics of gellan gum. Mixtures of 16.7 wt % alginate and 2 or 3 wt % gellan gum were found applicable for 3D plotting. Characterization of the resulting composite scaffolds revealed an increased stiffness in the wet state (15%⁻20% higher Young's modulus) and significantly lower volume swelling in cell culture medium compared to pure alginate scaffolds (~10% vs. ~23%). Cytocompatibility experiments with human mesenchymal stem cells (hMSC) revealed that cell attachment was improved-the seeding efficiency was ~2.5⁻3.5 times higher on the composites than on pure alginate. Additionally, the composites were shown to support hMSC proliferation and early osteogenic differentiation. In conclusion, print fidelity of highly concentrated alginate-gellan gum composites was comparable to those of pure alginate; after plotting and crosslinking, the scaffolds possessed improved qualities regarding shape fidelity, mechanical strength, and initial cell attachment making them attractive for tissue engineering applications.
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Affiliation(s)
- Ashwini Rahul Akkineni
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, 01307 Dresden, Germany.
| | - Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, 01307 Dresden, Germany.
| | - Alexander Funk
- IFW Dresden, Institute for Complex Materials, P.O. 270116, 01171 Dresden, Germany.
| | - Anja Waske
- IFW Dresden, Institute for Complex Materials, P.O. 270116, 01171 Dresden, Germany.
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, 01307 Dresden, Germany.
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, 01307 Dresden, Germany.
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Hakim JS, Esmaeili Rad M, Grahn PJ, Chen BK, Knight AM, Schmeichel AM, Isaq NA, Dadsetan M, Yaszemski MJ, Windebank AJ. Positively Charged Oligo[Poly(Ethylene Glycol) Fumarate] Scaffold Implantation Results in a Permissive Lesion Environment after Spinal Cord Injury in Rat. Tissue Eng Part A 2016; 21:2099-114. [PMID: 25891264 DOI: 10.1089/ten.tea.2015.0019] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Positively charged oligo[poly(ethylene glycol) fumarate] (OPF+) scaffolds loaded with Schwann cells bridge spinal cord injury (SCI) lesions and support axonal regeneration in rat. The regeneration achieved is not sufficient for inducing functional recovery. Attempts to increase regeneration would benefit from understanding the effects of the scaffold and transplanted cells on lesion environment. We conducted morphometric and stereological analysis of lesions in rats implanted with OPF+ scaffolds with or without loaded Schwann cells 1, 2, 3, 4, and 8 weeks after thoracic spinal cord transection. No differences were found in collagen scarring, cyst formation, astrocyte reactivity, myelin debris, or chondroitin sulfate proteoglycan (CSPG) accumulation. However, when scaffold-implanted animals were compared with animals with transection injuries only, these barriers to regeneration were significantly reduced, accompanied by increased activated macrophages/microglia. This distinctive and regeneration permissive tissue reaction to scaffold implantation was independent of Schwann cell transplantation. Although the tissue reaction was beneficial in the short term, we observed a chronic fibrotic host response, resulting in scaffolds surrounded by collagen at 8 weeks. This study demonstrates that an appropriate biomaterial scaffold improves the environment for regeneration. Future targeting of the host fibrotic response may allow increased axonal regeneration and functional recovery.
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Affiliation(s)
- Jeffrey S Hakim
- 1 Mayo Clinic College of Medicine , Mayo Clinic, Rochester, Minnesota.,2 Mayo Graduate School , Mayo Clinic, Rochester, Minnesota
| | | | - Peter J Grahn
- 2 Mayo Graduate School , Mayo Clinic, Rochester, Minnesota
| | - Bingkun K Chen
- 3 Department of Neurology, Mayo Clinic , Rochester, Minnesota
| | - Andrew M Knight
- 3 Department of Neurology, Mayo Clinic , Rochester, Minnesota
| | | | - Nasro A Isaq
- 2 Mayo Graduate School , Mayo Clinic, Rochester, Minnesota
| | - Mahrokh Dadsetan
- 1 Mayo Clinic College of Medicine , Mayo Clinic, Rochester, Minnesota.,4 Department of Orthopedic Surgery, Mayo Clinic , Rochester, Minnesota
| | - Michael J Yaszemski
- 1 Mayo Clinic College of Medicine , Mayo Clinic, Rochester, Minnesota.,4 Department of Orthopedic Surgery, Mayo Clinic , Rochester, Minnesota.,5 Center for Regenerative Medicine , Mayo Clinic, Rochester, Minnesota
| | - Anthony J Windebank
- 1 Mayo Clinic College of Medicine , Mayo Clinic, Rochester, Minnesota.,3 Department of Neurology, Mayo Clinic , Rochester, Minnesota.,5 Center for Regenerative Medicine , Mayo Clinic, Rochester, Minnesota
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Harris JP, Struzyna LA, Murphy PL, Adewole DO, Kuo E, Cullen DK. Advanced biomaterial strategies to transplant preformed micro-tissue engineered neural networks into the brain. J Neural Eng 2016; 13:016019. [PMID: 26760138 DOI: 10.1088/1741-2560/13/1/016019] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Connectome disruption is a hallmark of many neurological diseases and trauma with no current strategies to restore lost long-distance axonal pathways in the brain. We are creating transplantable micro-tissue engineered neural networks (micro-TENNs), which are preformed constructs consisting of embedded neurons and long axonal tracts to integrate with the nervous system to physically reconstitute lost axonal pathways. APPROACH We advanced micro-tissue engineering techniques to generate micro-TENNs consisting of discrete populations of mature primary cerebral cortical neurons spanned by long axonal fascicles encased in miniature hydrogel micro-columns. Further, we improved the biomaterial encasement scheme by adding a thin layer of low viscosity carboxymethylcellulose (CMC) to enable needle-less insertion and rapid softening for mechanical similarity with brain tissue. MAIN RESULTS The engineered architecture of cortical micro-TENNs facilitated robust neuronal viability and axonal cytoarchitecture to at least 22 days in vitro. Micro-TENNs displayed discrete neuronal populations spanned by long axonal fasciculation throughout the core, thus mimicking the general systems-level anatomy of gray matter-white matter in the brain. Additionally, micro-columns with thin CMC-coating upon mild dehydration were able to withstand a force of 893 ± 457 mN before buckling, whereas a solid agarose cylinder of similar dimensions was predicted to withstand less than 150 μN of force. This thin CMC coating increased the stiffness by three orders of magnitude, enabling needle-less insertion into brain while significantly reducing the footprint of previous needle-based delivery methods to minimize insertion trauma. SIGNIFICANCE Our novel micro-TENNs are the first strategy designed for minimally invasive implantation to facilitate nervous system repair by simultaneously providing neuronal replacement and physical reconstruction of long-distance axon pathways in the brain. The micro-TENN approach may offer the ability to treat several disorders that disrupt the connectome, including Parkinson's disease, traumatic brain injury, stroke, and brain tumor excision.
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Affiliation(s)
- J P Harris
- Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. Philadelphia Veterans Affairs Medical Center, Philadelphia, PA, USA
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Stem cells in canine spinal cord injury--promise for regenerative therapy in a large animal model of human disease. Stem Cell Rev Rep 2015; 11:180-93. [PMID: 25173879 DOI: 10.1007/s12015-014-9553-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The use of cell transplantation for spinal cord injury is a rapidly evolving field in regenerative medicine. Numerous animal models are currently being used. However, translation to human patients is still a challenging step. Dogs are of increasing importance as a translational model for human disease since there is a greater awareness of the need to increase the quality of preclinical data. The use of dogs ultimately brings benefit to both human and veterinary medicine. In this review we analyze experimental and clinical studies using cell transplantation for canine spinal cord injury. Overall, in experimental studies, transplantation groups showed improvement over control groups. Improvements were measured at the functional, electrophysiological, histological, RNA and protein levels. Most clinical studies support beneficial effects of cell transplantation despite the fact that methodological limitations preclude definitive conclusions. However, the mechanisms of action and underlying the behavior of transplanted cells in the injured spinal cord remain unclear. Overall, we conclude here that stem cell interventions are a promising avenue for the treatment of spinal cord injury. Canines are a promising model that may help bridge the gap between translational research and human clinical trials.
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Struzyna LA, Wolf JA, Mietus CJ, Adewole DO, Chen HI, Smith DH, Cullen DK. Rebuilding Brain Circuitry with Living Micro-Tissue Engineered Neural Networks. Tissue Eng Part A 2015; 21:2744-56. [PMID: 26414439 DOI: 10.1089/ten.tea.2014.0557] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Prominent neuropathology following trauma, stroke, and various neurodegenerative diseases includes neuronal degeneration as well as loss of long-distance axonal connections. While cell replacement and axonal pathfinding strategies are often explored independently, there is no strategy capable of simultaneously replacing lost neurons and re-establishing long-distance axonal connections in the central nervous system. Accordingly, we have created micro-tissue engineered neural networks (micro-TENNs), which are preformed constructs consisting of long integrated axonal tracts spanning discrete neuronal populations. These living micro-TENNs reconstitute the architecture of long-distance axonal tracts, and thus may serve as an effective substrate for targeted neurosurgical reconstruction of damaged pathways in the brain. Cerebral cortical neurons or dorsal root ganglia neurons were precisely delivered into the tubular constructs, and properties of the hydrogel exterior and extracellular matrix internal column (180-500 μm diameter) were optimized for robust neuronal survival and to promote axonal extensions across the 2.0 cm tube length. The very small diameter permits minimally invasive delivery into the brain. In this study, preformed micro-TENNs were stereotaxically injected into naive rats to bridge deep thalamic structures with the cerebral cortex to assess construct survival and integration. We found that micro-TENN neurons survived at least 1 month and maintained their long axonal architecture along the cortical-thalamic axis. Notably, we also found neurite penetration from micro-TENN neurons into the host cortex, with evidence of synapse formation. These micro-TENNs represent a new strategy to facilitate nervous system repair by recapitulating features of neural pathways to restore or modulate damaged brain circuitry.
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Affiliation(s)
- Laura A Struzyna
- 1 Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,2 Philadelphia Veterans Affairs Medical Center , Philadelphia, Pennsylvania.,3 Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania , Philadelphia, Pennsylvania
| | - John A Wolf
- 1 Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,2 Philadelphia Veterans Affairs Medical Center , Philadelphia, Pennsylvania
| | - Constance J Mietus
- 1 Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania
| | - Dayo O Adewole
- 1 Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,2 Philadelphia Veterans Affairs Medical Center , Philadelphia, Pennsylvania.,3 Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania , Philadelphia, Pennsylvania
| | - H Isaac Chen
- 1 Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,2 Philadelphia Veterans Affairs Medical Center , Philadelphia, Pennsylvania
| | - Douglas H Smith
- 1 Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania
| | - D Kacy Cullen
- 1 Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,2 Philadelphia Veterans Affairs Medical Center , Philadelphia, Pennsylvania
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41
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Assunção-Silva RC, Oliveira CC, Ziv-Polat O, Gomes ED, Sahar A, Sousa N, Silva NA, Salgado AJ. Induction of neurite outgrowth in 3D hydrogel-based environments. Biomed Mater 2015; 10:051001. [DOI: 10.1088/1748-6041/10/5/051001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ji W, Zhang X, Ji L, Wang K, Qiu Y. Effects of brain‑derived neurotrophic factor and neurotrophin‑3 on the neuronal differentiation of rat adipose‑derived stem cells. Mol Med Rep 2015; 12:4981-8. [PMID: 26239042 PMCID: PMC4581787 DOI: 10.3892/mmr.2015.4099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 06/23/2015] [Indexed: 01/15/2023] Open
Abstract
Tissue engineering is a promising method that may be used to treat spinal cord injury (SCI). The underlying repair mechanism of tissue engineering involves the stable secretion of neurotrophins from seed cells, which eventually differentiate into neurons; therefore, the selection of appropriate seed cells, which stably secrete neurotrophins that easily differentiate into neurons requires investigation. Adipose‑derived stem cells (ADSCs), which are adult SCs, are advantageous due to convenience sampling and easy expansion; therefore, ADSCs are currently the most popular type of seed cell. Brain‑derived neurotrophic factor (BDNF) and neurotrophin‑3 (NT‑3) possess superior properties, when compared with other neurotrophic factors, in the maintenance of neuronal survival and promotion of SC differentiation into neurons. The present study used two lentiviruses, which specifically express BDNF and NT‑3 [Lenti‑BDNF‑green fluorescent protein (GFP), Lenti‑NT‑3‑red fluorescent protein (RFP)], to transfect third‑generation ADSCs. Three types of seed cell were obtained: i) Seed cells overexpressing BDNF (ADSC/Lenti‑BDNF‑GFP); ii) seed cells overexpressing NT‑3 (ADSC/Lenti‑NT‑3‑RFP); and iii) seed cells overexpressing BDNF and NT‑3 (ADSC/Lenti‑BDNF‑GFP and NT‑3‑RFP). The transfected cells were then induced to differentiate into neurons and were divided into a further four groups: i) The BDNF and NT‑3 co‑overexpression group; ii) the BDNF overexpression group; iii) the NT‑3 overexpression group; and iv) the control group, which consisted of untransfected ADSCs. The results of the present study demonstrate that BDNF and NT‑3 expression was higher 10 days after induction, as detected by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) and western blotting. Neuron‑specific enolase is a neuronal marker, the expression of which was highest in the BDNF and NT‑3 co‑overexpression group, followed by the BDNF overexpression group and then by the NT‑3 overexpression group. The lowest expression levels of NSE were detected in the control group, as determined by RT‑qPCR, western blotting and immunofluorescent staining. These results indicate that BDNF and NT‑3 exert a synergistic effect, which may promote the neuronal differentiation of ADSCs. The present study provides a solid theoretical foundation for future experiments regarding the use of tissue engineering technology for the treatment of SCI.
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Affiliation(s)
- Wenchen Ji
- Department of Orthopedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaowei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Le Ji
- Department of Orthopedics, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710068, P.R. China
| | - Kunzheng Wang
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Yusheng Qiu
- Department of Orthopedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Hakim JS, Esmaeili Rad M, Grahn PJ, Chen BK, Knight AM, Schmeichel AM, Isaq NA, Dadsetan M, Yaszemski MJ, Windebank AJ. Positively Charged Oligo[Poly(Ethylene Glycol) Fumarate] Scaffold Implantation Results in a Permissive Lesion Environment after Spinal Cord Injury in Rat. Tissue Eng Part A 2015. [DOI: 10.1089/ten.tea.2015.0019.rev] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hydrogels and Cell Based Therapies in Spinal Cord Injury Regeneration. Stem Cells Int 2015; 2015:948040. [PMID: 26124844 PMCID: PMC4466497 DOI: 10.1155/2015/948040] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 12/14/2014] [Indexed: 01/01/2023] Open
Abstract
Spinal cord injury (SCI) is a central nervous system- (CNS-) related disorder for which there is yet no successful treatment. Within the past several years, cell-based therapies have been explored for SCI repair, including the use of pluripotent human stem cells, and a number of adult-derived stem and mature cells such as mesenchymal stem cells, olfactory ensheathing cells, and Schwann cells. Although promising, cell transplantation is often overturned by the poor cell survival in the treatment of spinal cord injuries. Alternatively, the therapeutic role of different cells has been used in tissue engineering approaches by engrafting cells with biomaterials. The latter have the advantages of physically mimicking the CNS tissue, while promoting a more permissive environment for cell survival, growth, and differentiation. The roles of both cell- and biomaterial-based therapies as single therapeutic approaches for SCI repair will be discussed in this review. Moreover, as the multifactorial inhibitory environment of a SCI suggests that combinatorial approaches would be more effective, the importance of using biomaterials as cell carriers will be herein highlighted, as well as the recent advances and achievements of these promising tools for neural tissue regeneration.
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Oliveira SM, Reis RL, Mano JF. Towards the design of 3D multiscale instructive tissue engineering constructs: Current approaches and trends. Biotechnol Adv 2015; 33:842-55. [PMID: 26025038 DOI: 10.1016/j.biotechadv.2015.05.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 05/21/2015] [Accepted: 05/23/2015] [Indexed: 01/03/2023]
Abstract
The design of 3D constructs with adequate properties to instruct and guide cells both in vitro and in vivo is one of the major focuses of tissue engineering. Successful tissue regeneration depends on the favorable crosstalk between the supporting structure, the cells and the host tissue so that a balanced matrix production and degradation are achieved. Herein, the major occurring events and players in normal and regenerative tissue are overviewed. These have been inspiring the selection or synthesis of instructive cues to include into the 3D constructs. We further highlight the importance of a multiscale perception of the range of features that can be included on the biomimetic structures. Lastly, we focus on the current and developing tissue-engineering approaches for the preparation of such 3D constructs: top-down, bottom-up and integrative. Bottom-up and integrative approaches present a higher potential for the design of tissue engineering devices with multiscale features and higher biochemical control than top-down strategies, and are the main focus of this review.
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Affiliation(s)
- Sara M Oliveira
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Dept. of Polymer Engineering, University of Minho, Avepark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco- Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães 4805-017 Barco-Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Dept. of Polymer Engineering, University of Minho, Avepark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco- Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães 4805-017 Barco-Guimarães, Portugal
| | - João F Mano
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Dept. of Polymer Engineering, University of Minho, Avepark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco- Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães 4805-017 Barco-Guimarães, Portugal.
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Abstract
ABSTRACT Restoration of lost neuronal function after spinal cord injury still remains a considerable challenge for current medicine. Over the last decade, regenerative medicine has recorded rapid and promising advancements in stem cell research, genetic engineering and the progression of new sophisticated biomaterials as well as nanotechnology. This advancement has also been reflected in neural tissue engineering, where, along with the development of a new generation of well-designed biopolymer scaffolds, multifactorial therapeutic strategies are being validated in order to determine the greatest possible repair efficacy of the complex CNS pathophysiology. Much attention is currently focused on the designing of multifunctional polymer scaffolds as systems for targeted drug or gene delivery, electrical stimulation or as substrates creating a special micro-environment, promoting the growth and desired differentiation of various cell lines. In this review, the latest advances in biomaterial technology together with various combinatorial strategies designed to treat spinal cord injury treatment are summarized and discussed.
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Kang D, Zhang HB, Nitta Y, Fang YP, Nishinari K. Gellan. POLYSACCHARIDES 2015. [DOI: 10.1007/978-3-319-03751-6_20-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Ferris CJ, Stevens LR, Gilmore KJ, Mume E, Greguric I, Kirchmajer DM, Wallace GG, in het Panhuis M. Peptide modification of purified gellan gum. J Mater Chem B 2015; 3:1106-1115. [DOI: 10.1039/c4tb01727g] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Gellan gum, an anionic polysaccharide is purified and modified with a short peptide to enhance cell attachment.
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Affiliation(s)
- C. J. Ferris
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
- Australia
- Soft Materials Group
| | - L. R. Stevens
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
- Australia
- Soft Materials Group
| | - K. J. Gilmore
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
- Australia
| | - E. Mume
- Australian Nuclear Science and Technology Organisation
- Lucas Heights
- Australia
| | - I. Greguric
- Australian Nuclear Science and Technology Organisation
- Lucas Heights
- Australia
| | - D. M. Kirchmajer
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
- Australia
- Soft Materials Group
| | - G. G. Wallace
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
- Australia
| | - M. in het Panhuis
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
- Australia
- Soft Materials Group
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Chhabra H, Gupta P, Verma PJ, Jadhav S, Bellare JR. Gelatin–PMVE/MA composite scaffold promotes expansion of embryonic stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 37:184-94. [DOI: 10.1016/j.msec.2013.12.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 11/16/2013] [Accepted: 12/25/2013] [Indexed: 12/13/2022]
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