1
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Aqel S, Al-Thani N, Haider MZ, Abdelhady S, Al Thani AA, Kobeissy F, Shaito AA. Biomaterials in Traumatic Brain Injury: Perspectives and Challenges. BIOLOGY 2023; 13:21. [PMID: 38248452 PMCID: PMC10813103 DOI: 10.3390/biology13010021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/16/2023] [Accepted: 10/23/2023] [Indexed: 01/23/2024]
Abstract
Traumatic brain injury (TBI) is a leading cause of mortality and long-term impairment globally. TBI has a dynamic pathology, encompassing a variety of metabolic and molecular events that occur in two phases: primary and secondary. A forceful external blow to the brain initiates the primary phase, followed by a secondary phase that involves the release of calcium ions (Ca2+) and the initiation of a cascade of inflammatory processes, including mitochondrial dysfunction, a rise in oxidative stress, activation of glial cells, and damage to the blood-brain barrier (BBB), resulting in paracellular leakage. Currently, there are no FDA-approved drugs for TBI, but existing approaches rely on delivering micro- and macromolecular treatments, which are constrained by the BBB, poor retention, off-target toxicity, and the complex pathology of TBI. Therefore, there is a demand for innovative and alternative therapeutics with effective delivery tactics for the diagnosis and treatment of TBI. Tissue engineering, which includes the use of biomaterials, is one such alternative approach. Biomaterials, such as hydrogels, including self-assembling peptides and electrospun nanofibers, can be used alone or in combination with neuronal stem cells to induce neurite outgrowth, the differentiation of human neural stem cells, and nerve gap bridging in TBI. This review examines the inclusion of biomaterials as potential treatments for TBI, including their types, synthesis, and mechanisms of action. This review also discusses the challenges faced by the use of biomaterials in TBI, including the development of biodegradable, biocompatible, and mechanically flexible biomaterials and, if combined with stem cells, the survival rate of the transplanted stem cells. A better understanding of the mechanisms and drawbacks of these novel therapeutic approaches will help to guide the design of future TBI therapies.
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Affiliation(s)
- Sarah Aqel
- Medical Research Center, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Najlaa Al-Thani
- Research and Development Department, Barzan Holdings, Doha P.O. Box 7178, Qatar
| | - Mohammad Z. Haider
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar;
| | - Samar Abdelhady
- Faculty of Medicine, Alexandria University, Alexandria 21544, Egypt;
| | - Asmaa A. Al Thani
- Biomedical Research Center and Department of Biomedical Sciences, College of Health Science, QU Health, Qatar University, Doha P.O. Box 2713, Qatar;
| | - Firas Kobeissy
- Department of Neurobiology, Center for Neurotrauma, Multiomics & Biomarkers (CNMB), Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Abdullah A. Shaito
- Biomedical Research Center, Department of Biomedical Sciences at College of Health Sciences, College of Medicine, Qatar University, Doha P.O. Box 2713, Qatar
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2
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Kim A, Downer MA, Berry CE, Valencia C, Fazilat AZ, Griffin M. Investigating Immunomodulatory Biomaterials for Preventing the Foreign Body Response. Bioengineering (Basel) 2023; 10:1411. [PMID: 38136002 PMCID: PMC10741225 DOI: 10.3390/bioengineering10121411] [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: 10/03/2023] [Revised: 11/12/2023] [Accepted: 11/15/2023] [Indexed: 12/24/2023] Open
Abstract
Implantable biomaterials represent the forefront of regenerative medicine, providing platforms and vessels for delivering a creative range of therapeutic benefits in diverse disease contexts. However, the chronic damage resulting from implant rejection tends to outweigh the intended healing benefits, presenting a considerable challenge when implementing treatment-based biomaterials. In response to implant rejection, proinflammatory macrophages and activated fibroblasts contribute to a synergistically destructive process of uncontrolled inflammation and excessive fibrosis. Understanding the complex biomaterial-host cell interactions that occur within the tissue microenvironment is crucial for the development of therapeutic biomaterials that promote tissue integration and minimize the foreign body response. Recent modifications of specific material properties enhance the immunomodulatory capabilities of the biomaterial and actively aid in taming the immune response by tuning interactions with the surrounding microenvironment either directly or indirectly. By incorporating modifications that amplify anti-inflammatory and pro-regenerative mechanisms, biomaterials can be optimized to maximize their healing benefits in harmony with the host immune system.
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Affiliation(s)
| | | | | | | | | | - Michelle Griffin
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; (A.K.); (M.A.D.); (C.E.B.); (A.Z.F.)
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3
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Ho MT, Ortin-Martinez A, Yan NE, Comanita L, Gurdita A, Pham Truong V, Cui H, Wallace VA, Shoichet MS. Hydrogel assisted photoreceptor delivery inhibits material transfer. Biomaterials 2023; 298:122140. [PMID: 37163876 DOI: 10.1016/j.biomaterials.2023.122140] [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: 01/24/2023] [Revised: 04/24/2023] [Accepted: 04/28/2023] [Indexed: 05/12/2023]
Abstract
Cell therapy holds tremendous promise for vision restoration; yet donor cell survival and integration continue to limit efficacy of these strategies. Transplanted photoreceptors, which mediate light sensitivity in the retina, transfer cytoplasmic components to host photoreceptors instead of integrating into the tissue. Donor cell material transfer could, therefore, function as a protein augmentation strategy to restore photoreceptor function. Biomaterials, such as hyaluronan-based hydrogels, can support donor cell survival but have not been evaluated for effects on material transfer. With increased survival, we hypothesized that we would achieve greater material transfer; however, the opposite occurred. Photoreceptors delivered to the subretinal space in mice in a hyaluronan and methylcellulose (HAMC) hydrogel showed reduced material transfer. We examined mitochondria transfer in vitro and cytosolic protein transfer in vivo and demonstrate that HAMC significantly reduced transfer in both contexts, which we ascribe to reduced cell-cell contact. Nanotube-like donor cell protrusions were significantly reduced in the hydrogel-transplanted photoreceptors compared to the saline control group, which suggests that HAMC limits the contact required to the host retina for transfer. Thus, HAMC can be used to manipulate the behaviour of transplanted donor cells in cell therapy strategies.
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Affiliation(s)
- Margaret T Ho
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada; Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Arturo Ortin-Martinez
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Nicole E Yan
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Lacrimioara Comanita
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Akshay Gurdita
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Victor Pham Truong
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Hong Cui
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario, Canada; Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Valerie A Wallace
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada; Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada.
| | - Molly S Shoichet
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada; Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario, Canada; Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada; Department of Chemistry, University of Toronto, Toronto, Ontario, Canada.
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4
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The Role of Interstitial Fluid Pressure in Cerebral Porous Biomaterial Integration. Brain Sci 2022; 12:brainsci12040417. [PMID: 35447953 PMCID: PMC9040716 DOI: 10.3390/brainsci12040417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/18/2022] [Accepted: 03/20/2022] [Indexed: 02/05/2023] Open
Abstract
Recent advances in biomaterials offer new possibilities for brain tissue reconstruction. Biocompatibility, provision of cell adhesion motives and mechanical properties are among the present main design criteria. We here propose a radically new and potentially major element determining biointegration of porous biomaterials: the favorable effect of interstitial fluid pressure (IFP). The force applied by the lymphatic system through the interstitial fluid pressure on biomaterial integration has mostly been neglected so far. We hypothesize it has the potential to force 3D biointegration of porous biomaterials. In this study, we develop a capillary hydrostatic device to apply controlled in vitro interstitial fluid pressure and study its effect during 3D tissue culture. We find that the IFP is a key player in porous biomaterial tissue integration, at physiological IFP levels, surpassing the known effect of cell adhesion motives. Spontaneous electrical activity indicates that the culture conditions are not harmful for the cells. Our work identifies interstitial fluid pressure at physiological negative values as a potential main driver for tissue integration into porous biomaterials. We anticipate that controlling the IFP level could narrow the gap between in vivo and in vitro and therefore decrease the need for animal screening in biomaterial design.
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5
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Decellularised extracellular matrix-based biomaterials for repair and regeneration of central nervous system. Expert Rev Mol Med 2022; 23:e25. [PMID: 34994341 PMCID: PMC9884794 DOI: 10.1017/erm.2021.22] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The central nervous system (CNS), consisting of the brain and spinal cord, regulates the mind and functions of the organs. CNS diseases, leading to changes in neurological functions in corresponding sites and causing long-term disability, represent one of the major public health issues with significant clinical and economic burdens worldwide. In particular, the abnormal changes in the extracellular matrix under various disease conditions have been demonstrated as one of the main factors that can alter normal cell function and reduce the neuroregeneration potential in damaged tissue. Decellularised extracellular matrix (dECM)-based biomaterials have been recently utilised for CNS applications, closely mimicking the native tissue. dECM retains tissue-specific components, including proteoglycan as well as structural and functional proteins. Due to their unique composition, these biomaterials can stimulate sensitive repair mechanisms associated with CNS damages. Herein, we discuss the decellularisation of the brain and spinal cord as well as recellularisation of acellular matrix and the recent progress in the utilisation of brain and spinal cord dECM.
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6
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Roberton VH, Phillips JB. Considerations for the use of biomaterials to support cell therapy in neurodegenerative disease. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2022; 166:191-205. [DOI: 10.1016/bs.irn.2022.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Clément JP, Al-Alwan L, Glasgow SD, Stolow A, Ding Y, Quevedo Melo T, Khayachi A, Liu Y, Hellmund M, Haag R, Milnerwood AJ, Grütter P, Kennedy TE. Dendritic Polyglycerol Amine: An Enhanced Substrate to Support Long-Term Neural Cell Culture. ASN Neuro 2022; 14:17590914211073276. [PMID: 35023760 PMCID: PMC8784910 DOI: 10.1177/17590914211073276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Long-term stable cell culture is a critical tool to better understand cell function. Most adherent cell culture models require a polymer substrate coating of poly-lysine or poly-ornithine for the cells to adhere and survive. However, polypeptide-based substrates are degraded by proteolysis and it remains a challenge to maintain healthy cell cultures for extended periods of time. Here, we report the development of an enhanced cell culture substrate based on a coating of dendritic polyglycerol amine (dPGA), a non-protein macromolecular biomimetic of poly-lysine, to promote the adhesion and survival of neurons in cell culture. We show that this new polymer coating provides enhanced survival, differentiation and long-term stability for cultures of primary neurons or neurons derived from human induced pluripotent stem cells (hiPSCs). Atomic force microscopy analysis provides evidence that greater nanoscale roughness contributes to the enhanced capacity of dPGA-coated surfaces to support cells in culture. We conclude that dPGA is a cytocompatible, functionally superior, easy to use, low cost and highly stable alternative to poly-cationic polymer cell culture substrate coatings such as poly-lysine and poly-ornithine.
Summary statement
Here, we describe a novel dendritic polyglycerol amine-based substrate coating, demonstrating superior performance compared to current polymer coatings for long-term culture of primary neurons and neurons derived from induced pluripotent stem cells.
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Affiliation(s)
- Jean-Pierre Clément
- Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Canada
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
| | - Laila Al-Alwan
- Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Canada
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
| | - Stephen D. Glasgow
- Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Canada
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
| | - Avya Stolow
- Department of Physics, McGill University, Montreal, Canada
| | - Yi Ding
- Department of Physics, McGill University, Montreal, Canada
| | - Thaiany Quevedo Melo
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
| | - Anouar Khayachi
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
| | - Yumin Liu
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
| | - Markus Hellmund
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Austen J Milnerwood
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
| | - Peter Grütter
- Department of Physics, McGill University, Montreal, Canada
| | - Timothy E. Kennedy
- Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Canada
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Canada
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8
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Elghajiji A, Wang X, Weston SD, Zeck G, Hengerer B, Tosh D, Rocha PRF. Electrochemical Impedance Spectroscopy as a Tool for Monitoring Cell Differentiation from Floor Plate Progenitors to Midbrain Neurons in Real Time. Adv Biol (Weinh) 2021; 5:e2100330. [PMID: 33825335 DOI: 10.1002/adbi.202100330] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Indexed: 11/10/2022]
Abstract
Here shows that electrical impedance spectroscopy can be used as a non-invasive and real time tool to probe cell adhesion and differentiation from midbrain floor plate progenitors into midbrain neurons on Au electrodes coated with human laminin. The electrical data and equivalent circuit modeling are consistent with standard microscopy analysis and reveal that within the first 6 hours progenitor cells sediment and attach to the electrode within 40 hours. Between 40 and 120 hours, midbrain progenitor cells differentiate into midbrain neurons, followed by an electrochemically stable maturation phase. The ability to sense and characterize non-invasively and in real time cell differentiation opens up unprecedented avenues for implantable therapies and differentiation strategies.
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Affiliation(s)
- Aya Elghajiji
- Centre for Biosensors, Bioelectronics and Biodevices (C3Bio), Department of Electronic and Electrical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.,Centre for Regenerative Medicine, Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Xin Wang
- Centre for Biosensors, Bioelectronics and Biodevices (C3Bio), Department of Electronic and Electrical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Stephen D Weston
- Centre for Regenerative Medicine, Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Guenther Zeck
- Biomedical Electronics and Systems, Institute of Electrodynamics, Microwave and Circuit Engineering, Vienna University of Technology, Wien, A-1040, Austria
| | - Bastian Hengerer
- CNS Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, 88397, Germany
| | - David Tosh
- Centre for Regenerative Medicine, Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Paulo R F Rocha
- Centre for Biosensors, Bioelectronics and Biodevices (C3Bio), Department of Electronic and Electrical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.,Centre for Functional Ecology (CFE), Department of Life Sciences, University of Coimbra, Coimbra, 3000-456, Portugal
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9
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Castaño O, López-Mengual A, Reginensi D, Matamoros-Angles A, Engel E, Del Rio JA. Chemotactic TEG3 Cells' Guiding Platforms Based on PLA Fibers Functionalized With the SDF-1α/CXCL12 Chemokine for Neural Regeneration Therapy. Front Bioeng Biotechnol 2021; 9:627805. [PMID: 33829009 PMCID: PMC8019790 DOI: 10.3389/fbioe.2021.627805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 03/01/2021] [Indexed: 12/14/2022] Open
Abstract
(Following spinal cord injury, olfactory ensheathing cell (OEC) transplantation is a promising therapeutic approach in promoting functional improvement. Some studies report that the migratory properties of OECs are compromised by inhibitory molecules and potentiated by chemical concentration differences. Here we compare the attachment, morphology, and directionality of an OEC-derived cell line, TEG3 cells, seeded on functionalized nanoscale meshes of Poly(l/dl-lactic acid; PLA) nanofibers. The size of the nanofibers has a strong effect on TEG3 cell adhesion and migration, with the PLA nanofibers having a 950 nm diameter being the ones that show the best results. TEG3 cells are capable of adopting a bipolar morphology on 950 nm fiber surfaces, as well as a highly dynamic behavior in migratory terms. Finally, we observe that functionalized nanofibers, with a chemical concentration increment of SDF-1α/CXCL12, strongly enhance the migratory characteristics of TEG3 cells over inhibitory substrates.
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Affiliation(s)
- Oscar Castaño
- Electronics and Biomedical Engineering, Universitat de Barcelona, Barcelona, Spain.,Biomaterials for Regenerative Therapies, Institute of Bioengineering of Catalonia, Parc Cientific de Barcelona, Barcelona, Spain.,CIBER en Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain.,Bioelectronics Unit and Nanobioeneering Laboratory, Institute for Nanoscience and Nanotechnology of the University of Barcelona, Barcelona, Spain
| | - Ana López-Mengual
- Molecular and Cellular Neurobiotechnology, Institute of Bioengineering of Catalonia, Parc Cientific de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Barcelona, Spain.,Institute of Neurosciences, University of Barcelona, Barcelona, Spain
| | - Diego Reginensi
- School of Medicine, Universidad de Panamá, Panama City, Panama.,Biomedical Engineering Program, Universidad Latina de Panamá, Panama City, Panama
| | - Andreu Matamoros-Angles
- Molecular and Cellular Neurobiotechnology, Institute of Bioengineering of Catalonia, Parc Cientific de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Barcelona, Spain.,Institute of Neurosciences, University of Barcelona, Barcelona, Spain
| | - Elisabeth Engel
- Biomaterials for Regenerative Therapies, Institute of Bioengineering of Catalonia, Parc Cientific de Barcelona, Barcelona, Spain.,CIBER en Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain.,IMEM-BRT Group, Department of Materials Science, EEBE, Technical University of Catalonia (UPC), Barcelona, Spain
| | - José Antonio Del Rio
- Molecular and Cellular Neurobiotechnology, Institute of Bioengineering of Catalonia, Parc Cientific de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Barcelona, Spain.,Institute of Neurosciences, University of Barcelona, Barcelona, Spain
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10
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Sekiya T, Holley MC. Cell Transplantation to Restore Lost Auditory Nerve Function is a Realistic Clinical Opportunity. Cell Transplant 2021; 30:9636897211035076. [PMID: 34498511 PMCID: PMC8438274 DOI: 10.1177/09636897211035076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Hearing is one of our most important means of communication. Disabling hearing loss (DHL) is a long-standing, unmet problem in medicine, and in many elderly people, it leads to social isolation, depression, and even dementia. Traditionally, major efforts to cure DHL have focused on hair cells (HCs). However, the auditory nerve is also important because it transmits electrical signals generated by HCs to the brainstem. Its function is critical for the success of cochlear implants as well as for future therapies for HC regeneration. Over the past two decades, cell transplantation has emerged as a promising therapeutic option for restoring lost auditory nerve function, and two independent studies on animal models show that cell transplantation can lead to functional recovery. In this article, we consider the approaches most likely to achieve success in the clinic. We conclude that the structure and biochemical integrity of the auditory nerve is critical and that it is important to preserve the remaining neural scaffold, and in particular the glial scar, for the functional integration of donor cells. To exploit the natural, autologous cell scaffold and to minimize the deleterious effects of surgery, donor cells can be placed relatively easily on the surface of the nerve endoscopically. In this context, the selection of donor cells is a critical issue. Nevertheless, there is now a very realistic possibility for clinical application of cell transplantation for several different types of hearing loss.
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Affiliation(s)
- Tetsuji Sekiya
- Department of Otolaryngology, Head and Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Neurological Surgery, Hikone Chuo Hospital, Hikone, Japan
- Tetsuji Sekiya, Department of Otolaryngology, Head and Neck Surgery, Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan,.
| | - Matthew C. Holley
- Department of Biomedical Science, University of Sheffield, Firth Court, Sheffield, England
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11
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Hamid OA, Eltaher HM, Sottile V, Yang J. 3D bioprinting of a stem cell-laden, multi-material tubular composite: An approach for spinal cord repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111707. [DOI: 10.1016/j.msec.2020.111707] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/14/2020] [Accepted: 11/03/2020] [Indexed: 01/16/2023]
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12
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Bartlett RD, Eleftheriadou D, Evans R, Choi D, Phillips JB. Mechanical properties of the spinal cord and brain: Comparison with clinical-grade biomaterials for tissue engineering and regenerative medicine. Biomaterials 2020; 258:120303. [DOI: 10.1016/j.biomaterials.2020.120303] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 08/03/2020] [Accepted: 08/05/2020] [Indexed: 12/14/2022]
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13
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Ribeiro S, Ribeiro C, Carvalho EO, Tubio CR, Castro N, Pereira N, Correia V, Gomes AC, Lanceros-Méndez S. Magnetically Activated Electroactive Microenvironments for Skeletal Muscle Tissue Regeneration. ACS APPLIED BIO MATERIALS 2020; 3:4239-4252. [DOI: 10.1021/acsabm.0c00315] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sylvie Ribeiro
- Centro/Departamento de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Centre of Molecular and Environmental Biology (CBMA), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Clarisse Ribeiro
- Centro/Departamento de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- CEB—Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Estela O. Carvalho
- Centro/Departamento de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- CEB—Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Carmen R. Tubio
- BCMaterials, Basque Centre for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Nelson Castro
- BCMaterials, Basque Centre for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Nelson Pereira
- Centro/Departamento de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Centro Algoritmi, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Vitor Correia
- Centro/Departamento de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Centro Algoritmi, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Andreia C. Gomes
- Centre of Molecular and Environmental Biology (CBMA), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Senentxu Lanceros-Méndez
- Centro/Departamento de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- BCMaterials, Basque Centre for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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14
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Combinatorial biophysical cue sensor array for controlling neural stem cell fate. Biosens Bioelectron 2020; 156:112125. [DOI: 10.1016/j.bios.2020.112125] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/24/2020] [Accepted: 02/24/2020] [Indexed: 02/06/2023]
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15
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Ji YR, Homaeigohar S, Wang YH, Lin C, Su TY, Cheng CC, Yang SH, Young TH. Selective Regulation of Neurons, Glial Cells, and Neural Stem/Precursor Cells by Poly(allylguanidine)-Coated Surfaces. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48381-48392. [PMID: 31845571 DOI: 10.1021/acsami.9b17143] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Poly(allylguanidine) (PAG) was synthesized and characterized as a polycationic coating material for culturing neurons, glial cells, and neural stem/precursor cells (NSPCs) to apply PAG for neural tissue engineering. For comparison, poly-d-lysine (PDL), the golden benchmark of the neuron cell culture system, was also used in this study. When PAG was subjected to a mixed culture of neurons and glial cells, cell adhesion and neurite extension of neuronal cells were clearly observed but only few glial cells could be found alongside the neurons. Compared to PDL, the significantly lower density of the glial fibrillary acidic protein-positive cells implied that PAG suppressed the glial cell development. Likewise, PAG was demonstrated to dominate the differentiation of NSPCs principally into neurons. To investigate whether the different effects of PAG and PDL on neuron and glial cell behaviors resulted from the difference of guanidinium cations and ammonium cations, poly-l-arginine (PLA) was included and compared in this study. Similar to PDL, PLA supported high neuron and glial cell viability simultaneously. Consequently, glial cell growth and viability restrained on PAG was not only affected by the side-chain guanidino groups but also by the backbone structure property. The absence of the peptide structure in the backbone of PAG and the conformation of coated PAG on tissue culture polystyrene possibly determined the polycationic biomaterial to limit the growth of glial cells.
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Affiliation(s)
- You-Ren Ji
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | - Shahin Homaeigohar
- Nanochemistry and Nanoengineering, School of Chemical Engineering, Department of Chemistry and Materials Science , Aalto University , Kemistintie 1 , 00076 Aalto , Finland
| | - Yu-Hsin Wang
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | - Chen Lin
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | - Tai-Yuan Su
- Department of Electrical Engineering , Yuan-Ze University , Taoyuan 320 , Taiwan
| | - Ching-Chia Cheng
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | | | - Tai-Horng Young
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
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