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Mullis AS, Kaplan DL. Functional bioengineered tissue models of neurodegenerative diseases. Biomaterials 2023; 298:122143. [PMID: 37146365 PMCID: PMC10209845 DOI: 10.1016/j.biomaterials.2023.122143] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/07/2023]
Abstract
Aging-associated neurodegenerative diseases, such as Alzheimer's and Parkinson's diseases remain poorly understood and no disease-modifying treatments exist despite decades of investigation. Predominant in vitro (e.g., 2D cell culture, organoids) and in vivo (e.g., mouse) models of these diseases are insufficient mimics of human brain tissue structure and function and of human neurodegenerative pathobiology, and have thus contributed to this collective translational failure. This has been a longstanding challenge in the field, and new strategies are required to address both fundamental and translational needs. Bioengineered tissue culture models constitute a class of promising alternatives, as they can overcome the low cell density, poor nutrient exchange, and long term culturability limitations of existing in vitro models. Further, they can reconstruct the structural, mechanical, and biochemical cues of native brain tissue, providing a better mimic of human brain tissues for in vitro pathobiological investigation and drug development. We discuss bioengineering techniques for the generation of these neurodegenerative tissue models, including biomaterials-, organoid-, and microfluidics-based approaches, and design considerations for their construction. To aid the development of the next generation of functional neurodegenerative disease models, we discuss approaches to incorporate greater cellular diversity and simulate aging processes within bioengineered brain tissues.
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Affiliation(s)
- Adam S Mullis
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA.
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA; Allen Discovery Center, Tufts University, Medford, MA, 02155, USA.
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2
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Assessing fetal human neural stem cells tumorigenicity potential in athymic rats with penetrating traumatic brain injury (pTBI). Brain Res 2022; 1791:148002. [PMID: 35810769 DOI: 10.1016/j.brainres.2022.148002] [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: 04/21/2022] [Revised: 06/30/2022] [Accepted: 07/01/2022] [Indexed: 11/22/2022]
Abstract
Traumatic brain injuries (TBI) often produce disability in survivors due to unresolved inflammation and progressive neurodegeneration. The central nervous system in mammals is incapable of self-repair. Two decades of preclinical studies and clinical trials have provided insights into TBI pathophysiology that could be utilized to develop clinically relevant therapy. Our laboratory recently reported efficacy of clinical trial grade fetal human neural stem cells (hNSCs) in immunosuppressed rats with penetrating traumatic brain injury (pTBI). Next, in compliance with the United States Food and Drug Administration (USFDA) guidance, this study explores safety by assessing the tumorigenicity potential of intracranial hNSC transplants in athymic rats with pTBI. First, the maximum tolerated dose (MTD) was determined. Then, forty athymic pTBI rats were randomized to either: Group A. pTBI + vehicle or Group B. pTBI + hNSCs at MTD one week after injury with 6-months survival, sufficient time to uncover transplant associated tumorigenicity. A board-certified Pathologist examined hematoxylin-eosin (H&E), Ki67 immunostained brain and spinal cord, serial sections along with several abnormal peripheral masses for evidence of lesion, transplant, and oncogenesis. There was no evidence of transplant derived tumors or oncogenic tissue necrosis. Consistent with athymic literature, the lesion remained unchanged even after robust hNSC engraftment. This safety study supports the conclusion that hNSCs are safe for transplantation in pTBI. The differences in lesion expansion between immunosuppressed and athymic rats in the presence of hNSCs suggests an unexpected role for thymus derived cells in resolution of trauma induced inflammation.
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3
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Doblado LR, Martínez-Ramos C, Pradas MM. Biomaterials for Neural Tissue Engineering. FRONTIERS IN NANOTECHNOLOGY 2021. [DOI: 10.3389/fnano.2021.643507] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The therapy of neural nerve injuries that involve the disruption of axonal pathways or axonal tracts has taken a new dimension with the development of tissue engineering techniques. When peripheral nerve injury (PNI), spinal cord injury (SCI), traumatic brain injury (TBI), or neurodegenerative disease occur, the intricate architecture undergoes alterations leading to growth inhibition and loss of guidance through large distance. To improve the limitations of purely cell-based therapies, the neural tissue engineering philosophy has emerged. Efforts are being made to produce an ideal scaffold based on synthetic and natural polymers that match the exact biological and mechanical properties of the tissue. Furthermore, through combining several components (biomaterials, cells, molecules), axonal regrowth is facilitated to obtain a functional recovery of the neural nerve diseases. The main objective of this review is to investigate the recent approaches and applications of neural tissue engineering approaches.
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4
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Ali MA, Bhuiyan MH. Types of biomaterials useful in brain repair. Neurochem Int 2021; 146:105034. [PMID: 33789130 DOI: 10.1016/j.neuint.2021.105034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/28/2021] [Accepted: 03/22/2021] [Indexed: 01/21/2023]
Abstract
Biomaterials is an emerging field in the study of brain tissue engineering and repair or neurogenesis. The fabrication of biomaterials that can replicate the mechanical and viscoelastic features required by the brain, including the poroviscoelastic responses, force dissipation, and solute diffusivity are essential to be mapped from the macro to the nanoscale level under physiological conditions in order for us to gain an effective treatment for neurodegenerative diseases. This research topic has identified a critical study gap that must be addressed, and that is to source suitable biomaterials and/or create reliable brain-tissue-like biomaterials. This chapter will define and discuss the various types of biomaterials, their structures, and their function-properties features which would enable the development of next-generation biomaterials useful in brain repair.
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Affiliation(s)
- M Azam Ali
- Center for Bioengineering and Nanomedicine, Faculty of Dentistry, Division of Health Sciences, University of Otago, Dunedin, New Zealand.
| | - Mozammel Haque Bhuiyan
- Center for Bioengineering and Nanomedicine, Faculty of Dentistry, Division of Health Sciences, University of Otago, Dunedin, New Zealand.
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5
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Ucar B. Natural biomaterials in brain repair: A focus on collagen. Neurochem Int 2021; 146:105033. [PMID: 33785419 DOI: 10.1016/j.neuint.2021.105033] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 03/07/2021] [Accepted: 03/22/2021] [Indexed: 12/16/2022]
Abstract
Biomaterials derived from natural resources have increasingly been used for versatile applications in the central nervous system (CNS). Thanks to their biocompatibility and biodegradability, natural biomaterials offer vast possibilities for future clinical repair strategies for the CNS. These materials can be used for diverse applications such as hydrogels to fill the tissue cavities, microparticles to deliver drugs across the blood-brain barrier, and scaffolds to transplant stem cells. In this review, various uses of prominent protein and polysaccharide biomaterials, with a special focus on collagen, in repair and regenerative applications for the brain are summarized together with their individual advantages and disadvantages.
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Affiliation(s)
- Buket Ucar
- Laboratory of Psychiatry and Experimental Alzheimer's Research, Medical University of Innsbruck, Austria.
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6
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Lacalle-Aurioles M, Cassel de Camps C, Zorca CE, Beitel LK, Durcan TM. Applying hiPSCs and Biomaterials Towards an Understanding and Treatment of Traumatic Brain Injury. Front Cell Neurosci 2020; 14:594304. [PMID: 33281561 PMCID: PMC7689345 DOI: 10.3389/fncel.2020.594304] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/19/2020] [Indexed: 12/12/2022] Open
Abstract
Traumatic brain injury (TBI) is the leading cause of disability and mortality in children and young adults and has a profound impact on the socio-economic wellbeing of patients and their families. Initially, brain damage is caused by mechanical stress-induced axonal injury and vascular dysfunction, which can include hemorrhage, blood-brain barrier disruption, and ischemia. Subsequent neuronal degeneration, chronic inflammation, demyelination, oxidative stress, and the spread of excitotoxicity can further aggravate disease pathology. Thus, TBI treatment requires prompt intervention to protect against neuronal and vascular degeneration. Rapid advances in the field of stem cells (SCs) have revolutionized the prospect of repairing brain function following TBI. However, more than that, SCs can contribute substantially to our knowledge of this multifaced pathology. Research, based on human induced pluripotent SCs (hiPSCs) can help decode the molecular pathways of degeneration and recovery of neuronal and glial function, which makes these cells valuable tools for drug screening. Additionally, experimental approaches that include hiPSC-derived engineered tissues (brain organoids and bio-printed constructs) and biomaterials represent a step forward for the field of regenerative medicine since they provide a more suitable microenvironment that enhances cell survival and grafting success. In this review, we highlight the important role of hiPSCs in better understanding the molecular pathways of TBI-related pathology and in developing novel therapeutic approaches, building on where we are at present. We summarize some of the most relevant findings for regenerative therapies using biomaterials and outline key challenges for TBI treatments that remain to be addressed.
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Affiliation(s)
- María Lacalle-Aurioles
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
| | - Camille Cassel de Camps
- Department of Biological and Biomedical Engineering, McGill University, Montreal, QC, Canada
| | - Cornelia E Zorca
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
| | - Lenore K Beitel
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
| | - Thomas M Durcan
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
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Qiu B, Bessler N, Figler K, Buchholz M, Rios AC, Malda J, Levato R, Caiazzo M. Bioprinting Neural Systems to Model Central Nervous System Diseases. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1910250. [PMID: 34566552 PMCID: PMC8444304 DOI: 10.1002/adfm.201910250] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 03/12/2020] [Accepted: 03/16/2020] [Indexed: 05/09/2023]
Abstract
To date, pharmaceutical progresses in central nervous system (CNS) diseases are clearly hampered by the lack of suitable disease models. Indeed, animal models do not faithfully represent human neurodegenerative processes and human in vitro 2D cell culture systems cannot recapitulate the in vivo complexity of neural systems. The search for valuable models of neurodegenerative diseases has recently been revived by the addition of 3D culture that allows to re-create the in vivo microenvironment including the interactions among different neural cell types and the surrounding extracellular matrix (ECM) components. In this review, the new challenges in the field of CNS diseases in vitro 3D modeling are discussed, focusing on the implementation of bioprinting approaches enabling positional control on the generation of the 3D microenvironments. The focus is specifically on the choice of the optimal materials to simulate the ECM brain compartment and the biofabrication technologies needed to shape the cellular components within a microenvironment that significantly represents brain biochemical and biophysical parameters.
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Affiliation(s)
- Boning Qiu
- Department of PharmaceuticsUtrecht Institute for Pharmaceutical Sciences (UIPS)Utrecht UniversityUniversiteitsweg 99Utrecht3584 CGThe Netherlands
| | - Nils Bessler
- Princess Máxima Center for Pediatric OncologyHeidelberglaan 25Utrecht3584 CSThe Netherlands
| | - Kianti Figler
- Department of PharmaceuticsUtrecht Institute for Pharmaceutical Sciences (UIPS)Utrecht UniversityUniversiteitsweg 99Utrecht3584 CGThe Netherlands
| | - Maj‐Britt Buchholz
- Princess Máxima Center for Pediatric OncologyHeidelberglaan 25Utrecht3584 CSThe Netherlands
| | - Anne C. Rios
- Princess Máxima Center for Pediatric OncologyHeidelberglaan 25Utrecht3584 CSThe Netherlands
| | - Jos Malda
- Department of Orthopaedics and Regenerative Medicine Center UtrechtUniversity Medical Center UtrechtUtrecht UniversityHeidelberglaan 100Utrecht3584CXThe Netherlands
- Department of Equine SciencesFaculty of Veterinary MedicineUtrecht UniversityYalelaan 112Utrecht3584CXThe Netherlands
| | - Riccardo Levato
- Department of Orthopaedics and Regenerative Medicine Center UtrechtUniversity Medical Center UtrechtUtrecht UniversityHeidelberglaan 100Utrecht3584CXThe Netherlands
- Department of Equine SciencesFaculty of Veterinary MedicineUtrecht UniversityYalelaan 112Utrecht3584CXThe Netherlands
| | - Massimiliano Caiazzo
- Department of PharmaceuticsUtrecht Institute for Pharmaceutical Sciences (UIPS)Utrecht UniversityUniversiteitsweg 99Utrecht3584 CGThe Netherlands
- Department of Molecular Medicine and Medical BiotechnologyUniversity of Naples “Federico II”Via Pansini 5Naples80131Italy
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8
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Lovett ML, Nieland TJ, Dingle YTL, Kaplan DL. Innovations in 3-Dimensional Tissue Models of Human Brain Physiology and Diseases. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1909146. [PMID: 34211358 PMCID: PMC8240470 DOI: 10.1002/adfm.201909146] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Indexed: 05/04/2023]
Abstract
3-dimensional (3D) laboratory tissue cultures have emerged as an alternative to traditional 2-dimensional (2D) culture systems that do not recapitulate native cell behavior. The discrepancy between in vivo and in vitro tissue-cell-molecular responses impedes understanding of human physiology in general and creates roadblocks for the discovery of therapeutic solutions. Two parallel approaches have emerged for the design of 3D culture systems. The first is biomedical engineering methodology, including bioengineered materials, bioprinting, microfluidics and bioreactors, used alone or in combination, to mimic the microenvironments of native tissues. The second approach is organoid technology, in which stem cells are exposed to chemical and/or biological cues to activate differentiation programs that are reminiscent of human (prenatal) development. This review article describes recent technological advances in engineering 3D cultures that more closely resemble the human brain. The contributions of in vitro 3D tissue culture systems to new insights in neurophysiology, neurological diseases and regenerative medicine are highlighted. Perspectives on designing improved tissue models of the human brain are offered, focusing on an integrative approach merging biomedical engineering tools with organoid biology.
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Affiliation(s)
- Michael L. Lovett
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155
| | - Thomas J.F. Nieland
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155
| | - Yu-Ting L. Dingle
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155
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Rouleau N, Bonzanni M, Erndt-Marino JD, Sievert K, Ramirez CG, Rusk W, Levin M, Kaplan DL. A 3D Tissue Model of Traumatic Brain Injury with Excitotoxicity That Is Inhibited by Chronic Exposure to Gabapentinoids. Biomolecules 2020; 10:E1196. [PMID: 32824600 PMCID: PMC7463727 DOI: 10.3390/biom10081196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 11/16/2022] Open
Abstract
Injury progression associated with cerebral laceration is insidious. Following the initial trauma, brain tissues become hyperexcitable, begetting further damage that compounds the initial impact over time. Clinicians have adopted several strategies to mitigate the effects of secondary brain injury; however, higher throughput screening tools with modular flexibility are needed to expedite mechanistic studies and drug discovery that will contribute to the enhanced protection, repair, and even the regeneration of neural tissues. Here we present a novel bioengineered cortical brain model of traumatic brain injury (TBI) that displays characteristics of primary and secondary injury, including an outwardly radiating cell death phenotype and increased glutamate release with excitotoxic features. DNA content and tissue function were normalized by high-concentration, chronic administrations of gabapentinoids. Additional experiments suggested that the treatment effects were likely neuroprotective rather than regenerative, as evidenced by the drug-mediated decreases in cell excitability and an absence of drug-induced proliferation. We conclude that the present model of traumatic brain injury demonstrates validity and can serve as a customizable experimental platform to assess the individual contribution of cell types on TBI progression, as well as to screen anti-excitotoxic and pro-regenerative compounds.
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Affiliation(s)
- Nicolas Rouleau
- Department of Biomedical Engineering, Science and Technology Center, 4 Colby Street, School of Engineering, Tufts University, Medford, MA 02155, USA; (N.R.); (M.B.); (J.D.E.-M.); (K.S.); (C.G.R.); (W.R.)
- Department of Biomedical Engineering, Initiative for Neural Science, Disease, and Engineering (INSciDE), Science & Engineering Complex, 200 College Avenue, Tufts University, Medford, MA 02155, USA
- Department of Biology, Allen Discovery Center at Tufts University, Science & Engineering Complex, 200 College, Avenue, Medford, MA 021553, USA;
| | - Mattia Bonzanni
- Department of Biomedical Engineering, Science and Technology Center, 4 Colby Street, School of Engineering, Tufts University, Medford, MA 02155, USA; (N.R.); (M.B.); (J.D.E.-M.); (K.S.); (C.G.R.); (W.R.)
- Department of Biomedical Engineering, Initiative for Neural Science, Disease, and Engineering (INSciDE), Science & Engineering Complex, 200 College Avenue, Tufts University, Medford, MA 02155, USA
- Department of Biology, Allen Discovery Center at Tufts University, Science & Engineering Complex, 200 College, Avenue, Medford, MA 021553, USA;
| | - Joshua D. Erndt-Marino
- Department of Biomedical Engineering, Science and Technology Center, 4 Colby Street, School of Engineering, Tufts University, Medford, MA 02155, USA; (N.R.); (M.B.); (J.D.E.-M.); (K.S.); (C.G.R.); (W.R.)
- Department of Biomedical Engineering, Initiative for Neural Science, Disease, and Engineering (INSciDE), Science & Engineering Complex, 200 College Avenue, Tufts University, Medford, MA 02155, USA
- Department of Biology, Allen Discovery Center at Tufts University, Science & Engineering Complex, 200 College, Avenue, Medford, MA 021553, USA;
| | - Katja Sievert
- Department of Biomedical Engineering, Science and Technology Center, 4 Colby Street, School of Engineering, Tufts University, Medford, MA 02155, USA; (N.R.); (M.B.); (J.D.E.-M.); (K.S.); (C.G.R.); (W.R.)
| | - Camila G. Ramirez
- Department of Biomedical Engineering, Science and Technology Center, 4 Colby Street, School of Engineering, Tufts University, Medford, MA 02155, USA; (N.R.); (M.B.); (J.D.E.-M.); (K.S.); (C.G.R.); (W.R.)
| | - William Rusk
- Department of Biomedical Engineering, Science and Technology Center, 4 Colby Street, School of Engineering, Tufts University, Medford, MA 02155, USA; (N.R.); (M.B.); (J.D.E.-M.); (K.S.); (C.G.R.); (W.R.)
| | - Michael Levin
- Department of Biology, Allen Discovery Center at Tufts University, Science & Engineering Complex, 200 College, Avenue, Medford, MA 021553, USA;
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Science and Technology Center, 4 Colby Street, School of Engineering, Tufts University, Medford, MA 02155, USA; (N.R.); (M.B.); (J.D.E.-M.); (K.S.); (C.G.R.); (W.R.)
- Department of Biomedical Engineering, Initiative for Neural Science, Disease, and Engineering (INSciDE), Science & Engineering Complex, 200 College Avenue, Tufts University, Medford, MA 02155, USA
- Department of Biology, Allen Discovery Center at Tufts University, Science & Engineering Complex, 200 College, Avenue, Medford, MA 021553, USA;
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Li F, Ducker M, Sun B, Szele FG, Czernuszka JT. Interpenetrating polymer networks of collagen, hyaluronic acid, and chondroitin sulfate as scaffolds for brain tissue engineering. Acta Biomater 2020; 112:122-135. [PMID: 32512215 DOI: 10.1016/j.actbio.2020.05.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 01/19/2023]
Abstract
Stem cells can provide neuro-protection and potentially neuro-replacement to patients suffering from traumatic brain injuries (TBI), with a practical option being delivery via engineered scaffolds. Collagen (Coll) and glycosaminoglycan (GAG) have been used as scaffolds for brain tissue engineering yet they often do not support cell differentiation and survival. In this study, we developed interpenetrating polymer network scaffolds comprising Coll, and incorporating two commonly found GAGs in the brain, chondroitin sulfate (CS) and/or hyaluronic acid (HA). We seeded these scaffolds with mouse neural stem cells from the subventricular zone (SVZ) niche. Compared to Coll-alone, all other substrates decreased the percent of nestin+ stem cells. Coll-CS-HA was more efficient at suppressing nestin expression than the other scaffolds; all SVZ cells lost nestin expression within 7 days of culture. In contrast to nestin, the percentage of microtubule associated protein 2 (MAP2+) neurons was greater in scaffolds containing, CS, HA or CS-HA, compared to Coll alone. Finally, Coll-CS increased the percentage of glial fibrillary acidic protein (GFAP+) astrocytes compared to Coll scaffolds. Overall, this work shows that Coll-HA and Coll-CS-HA scaffolds selectively enhance neurogenesis and may be advantageous in tissue engineering therapy for TBI. STATEMENT OF SIGNIFICANCE: Brain injury is devastating yet with few options for repair. Stem cells that reside in the subventricular zone (SVZ) only repair damage inefficiently due to poor control of their cellular progeny and unsuitable extracellular matrix substrates. To solve these problems, we have systematically generated collagen (Coll) scaffolds with interpenetrating polymer networks (IPN) of hyaluronic acid (HA) or chondroitin sulfate proteoglycans (CS) or both. The scaffolds had defined pore sizes, similar mechanical properties and all three stimulated neurogenesis, whereas only CS stimulated astrocyte genesis. Overall, this work suggests that Coll-HA and Coll-CS-HA scaffolds selectively enhance neurogenesis and may be advantageous in tissue engineering therapy for brain repair.
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Affiliation(s)
- Fangxin Li
- Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK
| | - Martin Ducker
- Department of Physiology, Anatomy and Genetics, University of Oxford, South Parks Road, Oxford OX1 3QX, UK
| | - Bin Sun
- Department of Physiology, Anatomy and Genetics, University of Oxford, South Parks Road, Oxford OX1 3QX, UK
| | - Francis G Szele
- Department of Physiology, Anatomy and Genetics, University of Oxford, South Parks Road, Oxford OX1 3QX, UK.
| | - Jan T Czernuszka
- Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.
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The use of bioactive matrices in regenerative therapies for traumatic brain injury. Acta Biomater 2020; 102:1-12. [PMID: 31751809 DOI: 10.1016/j.actbio.2019.11.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/22/2019] [Accepted: 11/13/2019] [Indexed: 01/01/2023]
Abstract
Functional deficits due to neuronal loss are a common theme across multiple neuropathologies, including traumatic brain injury (TBI). Apart from mitigating cell death, another approach to treating brain injuries involves re-establishing the neural circuitry at the lesion site by utilizing exogeneous and/or endogenous stem cells to achieve functional recovery. While there has been limited success, the emergence of new bioactive matrices that promote neural repair introduces new perspectives on the development of regenerative therapies for TBI. This review briefly discusses current development on cell-based therapies and the use of bioactive matrices, hydrogels in particular, when incorporated in regenerative therapies. Desirable characteristics of bioactive matrices that have been shown to augment neural repair in TBI models were identified and further discussed. Understanding the relative outcomes of newly developed biomaterials implanted in vivo can better guide the development of biomaterials as a therapeutic strategy, for biomaterial-based cellular therapies are still in their nascent stages. Nonetheless, the value of bioactive matrices as a treatment for acute brain injuries should be appreciated and further developed. STATEMENT OF SIGNIFICANCE: Cell-based therapies have received attention as an alternative therapeutic strategy to improve clinical outcome post-traumatic brain injury but have achieved limited success. Whilst the incorporation of newly developed biomaterials in regenerative therapies has shown promise in augmenting neural repair, studies have revealed new hurdles which must be overcome to improve their therapeutic efficacy. This review discusses the recent development of cell-based therapies with a specific focus on the use of bioactive matrices in the form of hydrogels, to complement cell transplantation within the injured brain. Moreover, this review consolidates in vivo animal studies that demonstrate relative functional outcome upon the implantation of different biomaterials to highlight their desirable traits to guide their development for regenerative therapies in traumatic brain injury.
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12
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Dehqan Niri A, Karimi Zarchi AA, Ghadiri Harati P, Salimi A, Mujokoro B. Tissue engineering scaffolds in the treatment of brain disorders in geriatric patients. Artif Organs 2019; 43:947-960. [DOI: 10.1111/aor.13485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 04/26/2019] [Accepted: 04/29/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Alireza Dehqan Niri
- Nanobiotechnology Research Center Baqiyatallah University of Medical Sciences Tehran Iran
| | | | - Parisa Ghadiri Harati
- Department of Physiotherapy, School of Rehabilitation Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Ali Salimi
- Nanobiotechnology Research Center Baqiyatallah University of Medical Sciences Tehran Iran
| | - Basil Mujokoro
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine Tehran University of Medical Sciences Tehran Iran
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13
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Alipour M, Nabavi SM, Arab L, Vosough M, Pakdaman H, Ehsani E, Shahpasand K. Stem cell therapy in Alzheimer's disease: possible benefits and limiting drawbacks. Mol Biol Rep 2018; 46:1425-1446. [PMID: 30565076 DOI: 10.1007/s11033-018-4499-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 11/13/2018] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease (AD) is the sixth leading cause of death globally and the main reason for dementia in elderly people. AD is a long-term and progressive neurodegenerative disorder that steadily worsens memory and communicating skills eventually leads to a disabled person of performing simple daily tasks. Unfortunately, numerous clinical trials exploring new therapeutic drugs have encountered disappointing outcomes in terms of improved cognitive performance since they are not capable of halting or stimulating the regeneration of already-damaged neural cells, and merely provide symptomatic relief. Therefore, a deeper understanding of the mechanism of action of stem cell may contribute to the development of novel and effective therapies. The revolutionary discovery of stem cells has cast a new hope for the development of disease-modifying treatments for AD, in terms of their potency in the replenishment of lost cells via differentiating towards specific lineages, stimulating in situ neurogenesis, and delivering the therapeutic agents to the brain. Herein, firstly, we explore the pathophysiology of AD. Next, we summarize the most recent preclinical stem cell reports designed for AD treatment, their benefits and outcomes according to cell type. We briefly review relevant clinical trials and their potential clinical applications in order to find a unique solution to effectively relieve the patients' pain.
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Affiliation(s)
- Masoume Alipour
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran
| | - Seyed Massood Nabavi
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran
| | - Leila Arab
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran
| | - Massoud Vosough
- Department of Stem Cells and Developmental Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Hossein Pakdaman
- Department of Neurology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsan Ehsani
- Department of Biology, Roudehen Branch, Islamic Azad University, Roudehen, Iran
| | - Koorosh Shahpasand
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran.
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14
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Sanchez-Rojas L, Gómez-Pinedo U, Benito-Martin MS, León-Espinosa G, Rascón-Ramirez F, Lendinez C, Martínez-Ramos C, Matías-Guiu J, Pradas MM, Barcia JA. Biohybrids of scaffolding hyaluronic acid biomaterials plus adipose stem cells home local neural stem and endothelial cells: Implications for reconstruction of brain lesions after stroke. J Biomed Mater Res B Appl Biomater 2018; 107:1598-1606. [PMID: 30307108 DOI: 10.1002/jbm.b.34252] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/23/2018] [Accepted: 09/08/2018] [Indexed: 12/25/2022]
Abstract
Endogenous neurogenesis in stroke is insufficient to replace the lost brain tissue, largely due to the lack of a proper biological structure to let new cells dwell in the damaged area. We hypothesized that scaffolds made of hyaluronic acid (HA) biomaterials (BM) could provide a suitable environment to home not only new neurons, but also vessels, glia and neurofilaments. Further, the addition of exogenous cells, such as adipose stem cells (ASC) could increase this effect. Athymic mice were randomly assigned to a one of four group: stroke alone, stroke and implantation of BM, stroke and implantation of BM with ASC, and sham operated animals. Stroke model consisted of middle cerebral artery thrombosis with FeCl3 . After 30 days, animals underwent magnetic resonance imaging (MRI) and were sacrificed. Proliferation and neurogenesis increased at the subventricular zone ipsilateral to the ventricle and neuroblasts, glial, and endothelial cells forming capillaries were seen inside the BM. Those effects increased when ASC were added, while there was less inflammatory reaction. Three-dimensional scaffolds made of HA are able to home newly formed neurons, glia, and endothelial cells permitting the growth neurofilaments inside them. The addition of ASC increase these effects and decrease the inflammatory reaction to the implant. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1598-1606, 2019.
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Affiliation(s)
- Leyre Sanchez-Rojas
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Ulises Gómez-Pinedo
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - María Soledad Benito-Martin
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Gonzalo León-Espinosa
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain.,Instituto Cajal, CSIC; Laboratorio Cajal de Circuitos Corticales (CTB), Universidad Politécnica de Madrid; Facultad de Farmacia, Universidad San Pablo CEU, Madrid, Spain
| | - Fernando Rascón-Ramirez
- Servicio de Neurocirugía, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - Cristina Lendinez
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Cristina Martínez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politécnica de Valencia, C. de Vera s/n, Valencia, Spain
| | - Jorge Matías-Guiu
- Servicio de Neurología. Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - Manuel Monleón Pradas
- Center for Biomaterials and Tissue Engineering, Universitat Politécnica de Valencia, C. de Vera s/n, Valencia, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, Valencia, Spain
| | - Juan A Barcia
- Servicio de Neurocirugía, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
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15
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Zibara K, Ballout N, Mondello S, Karnib N, Ramadan N, Omais S, Nabbouh A, Caliz D, Clavijo A, Hu Z, Ghanem N, Gajavelli S, Kobeissy F. Combination of drug and stem cells neurotherapy: Potential interventions in neurotrauma and traumatic brain injury. Neuropharmacology 2018; 145:177-198. [PMID: 30267729 DOI: 10.1016/j.neuropharm.2018.09.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 09/17/2018] [Accepted: 09/21/2018] [Indexed: 12/12/2022]
Abstract
Traumatic brain injury (TBI) has been recognized as one of the major public health issues that leads to devastating neurological disability. As a consequence of primary and secondary injury phases, neuronal loss following brain trauma leads to pathophysiological alterations on the molecular and cellular levels that severely impact the neuropsycho-behavioral and motor outcomes. Thus, to mitigate the neuropathological sequelae post-TBI such as cerebral edema, inflammation and neural degeneration, several neurotherapeutic options have been investigated including drug intervention, stem cell use and combinational therapies. These treatments aim to ameliorate cellular degeneration, motor decline, cognitive and behavioral deficits. Recently, the use of neural stem cells (NSCs) coupled with selective drug therapy has emerged as an alternative treatment option for neural regeneration and behavioral rehabilitation post-neural injury. Given their neuroprotective abilities, NSC-based neurotherapy has been widely investigated and well-reported in numerous disease models, notably in trauma studies. In this review, we will elaborate on current updates in cell replacement therapy in the area of neurotrauma. In addition, we will discuss novel combination drug therapy treatments that have been investigated in conjunction with stem cells to overcome the limitations associated with stem cell transplantation. Understanding the regenerative capacities of stem cell and drug combination therapy will help improve functional recovery and brain repair post-TBI. This article is part of the Special Issue entitled "Novel Treatments for Traumatic Brain Injury".
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Affiliation(s)
- Kazem Zibara
- ER045, Laboratory of Stem Cells, PRASE, Lebanese University, Beirut, Lebanon; Biology Department, Faculty of Sciences-I, Lebanese University, Beirut, Lebanon
| | - Nissrine Ballout
- ER045, Laboratory of Stem Cells, PRASE, Lebanese University, Beirut, Lebanon
| | - Stefania Mondello
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Nabil Karnib
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Lebanon
| | - Naify Ramadan
- Department of Women's and Children's Health (KBH), Division of Clinical Pediatrics, Karolinska Institute, Sweden
| | - Saad Omais
- Department of Biology, American University of Beirut, Beirut, Lebanon
| | - Ali Nabbouh
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Lebanon
| | - Daniela Caliz
- Lois Pope LIFE Center, Neurosurgery, University of Miami, 33136, Miami, FL, USA
| | - Angelica Clavijo
- Lois Pope LIFE Center, Neurosurgery, University of Miami, 33136, Miami, FL, USA
| | - Zhen Hu
- Lois Pope LIFE Center, Neurosurgery, University of Miami, 33136, Miami, FL, USA
| | - Noël Ghanem
- Department of Biology, American University of Beirut, Beirut, Lebanon
| | - Shyam Gajavelli
- Lois Pope LIFE Center, Neurosurgery, University of Miami, 33136, Miami, FL, USA.
| | - Firas Kobeissy
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Lebanon; Program for Neurotrauma, Neuroproteomics & Biomarkers Research, Department of Emergency Medicine, University of Florida, Gainesville, FL, 32611, USA.
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16
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Somaa FA, Wang TY, Niclis JC, Bruggeman KF, Kauhausen JA, Guo H, McDougall S, Williams RJ, Nisbet DR, Thompson LH, Parish CL. Peptide-Based Scaffolds Support Human Cortical Progenitor Graft Integration to Reduce Atrophy and Promote Functional Repair in a Model of Stroke. Cell Rep 2018; 20:1964-1977. [PMID: 28834757 DOI: 10.1016/j.celrep.2017.07.069] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/07/2017] [Accepted: 07/24/2017] [Indexed: 12/22/2022] Open
Abstract
Stem cell transplants offer significant hope for brain repair following ischemic damage. Pre-clinical work suggests that therapeutic mechanisms may be multi-faceted, incorporating bone-fide circuit reconstruction by transplanted neurons, but also protection/regeneration of host circuitry. Here, we engineered hydrogel scaffolds to form "bio-bridges" within the necrotic lesion cavity, providing physical and trophic support to transplanted human embryonic stem cell-derived cortical progenitors, as well as residual host neurons. Scaffolds were fabricated by the self-assembly of peptides for a laminin-derived epitope (IKVAV), thereby mimicking the brain's major extracellular protein. Following focal ischemia in rats, scaffold-supported cell transplants induced progressive motor improvements over 9 months, compared to cell- or scaffold-only implants. These grafts were larger, exhibited greater neuronal differentiation, and showed enhanced electrophysiological properties reflective of mature, integrated neurons. Varying graft timing post-injury enabled us to attribute repair to both neuroprotection and circuit replacement. These findings highlight strategies to improve the efficiency of stem cell grafts for brain repair.
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Affiliation(s)
- Fahad A Somaa
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Ting-Yi Wang
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Jonathan C Niclis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Kiara F Bruggeman
- Laboratory of Advanced Materials, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Jessica A Kauhausen
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Haoyao Guo
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Stuart McDougall
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | | | - David R Nisbet
- Laboratory of Advanced Materials, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
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17
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Biomaterial Scaffolds in Regenerative Therapy of the Central Nervous System. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7848901. [PMID: 29805977 PMCID: PMC5899851 DOI: 10.1155/2018/7848901] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/18/2018] [Accepted: 02/21/2018] [Indexed: 02/08/2023]
Abstract
The central nervous system (CNS) is the most important section of the nervous system as it regulates the function of various organs. Injury to the CNS causes impairment of neurological functions in corresponding sites and further leads to long-term patient disability. CNS regeneration is difficult because of its poor response to treatment and, to date, no effective therapies have been found to rectify CNS injuries. Biomaterial scaffolds have been applied with promising results in regeneration medicine. They also show great potential in CNS regeneration for tissue repair and functional recovery. Biomaterial scaffolds are applied in CNS regeneration predominantly as hydrogels and biodegradable scaffolds. They can act as cellular supportive scaffolds to facilitate cell infiltration and proliferation. They can also be combined with cell therapy to repair CNS injury. This review discusses the categories and progression of the biomaterial scaffolds that are applied in CNS regeneration.
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18
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Bakhshandeh B, Zarrintaj P, Oftadeh MO, Keramati F, Fouladiha H, Sohrabi-Jahromi S, Ziraksaz Z. Tissue engineering; strategies, tissues, and biomaterials. Biotechnol Genet Eng Rev 2018; 33:144-172. [PMID: 29385962 DOI: 10.1080/02648725.2018.1430464] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Current tissue regenerative strategies rely mainly on tissue repair by transplantation of the synthetic/natural implants. However, limitations of the existing strategies have increased the demand for tissue engineering approaches. Appropriate cell source, effective cell modification, and proper supportive matrices are three bases of tissue engineering. Selection of appropriate methods for cell stimulation, scaffold synthesis, and tissue transplantation play a definitive role in successful tissue engineering. Although the variety of the players are available, but proper combination and functional synergism determine the practical efficacy. Hence, in this review, a comprehensive view of tissue engineering and its different aspects are investigated.
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Affiliation(s)
- Behnaz Bakhshandeh
- a Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Payam Zarrintaj
- b School of Chemical Engineering, College of Engineering , University of Tehran , Tehran , Iran
| | - Mohammad Omid Oftadeh
- a Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran.,c Stem Cell Technology Research Center , Tehran , Iran
| | - Farid Keramati
- a Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Hamideh Fouladiha
- a Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Salma Sohrabi-Jahromi
- d Gottingen Center for Molecular Biosciences , Georg August University , Göttingen , Germany
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19
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Que RA, Arulmoli J, Da Silva NA, Flanagan LA, Wang SW. Recombinant collagen scaffolds as substrates for human neural stem/progenitor cells. J Biomed Mater Res A 2018; 106:1363-1372. [PMID: 29341434 DOI: 10.1002/jbm.a.36343] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 12/05/2017] [Accepted: 01/10/2018] [Indexed: 02/05/2023]
Abstract
Adhesion to the microenvironment profoundly affects stem cell functions, including proliferation and differentiation, and understanding the interaction of stem cells with the microenvironment is important for controlling their behavior. In this study, we investigated the effects of the integrin binding epitopes GFOGER and IKVAV (natively present in collagen I and laminin, respectively) on human neural stem/progenitor cells (hNSPCs). To test the specificity of these epitopes, GFOGER or IKVAV were placed within the context of recombinant triple-helical collagen III engineered to be devoid of native integrin binding sites. HNSPCs adhered to collagen that presented GFOGER as the sole integrin-binding site, but not to IKVAV-containing collagen. For the GFOGER-containing collagens, antibodies against the β1 integrin subunit prevented cellular adhesion, antibodies against the α1 subunit reduced cell adhesion, and antibodies against α2 or α3 subunits had no significant effect. These results indicate that hNSPCs primarily interact with GFOGER through the α1β1 integrin heterodimer. These GFOGER-presenting collagen variants also supported differentiation of hNSPCs into neurons and astrocytes. Our findings show, for the first time, that hNSPCs can bind to the GFOGER sequence, and they provide motivation to develop hydrogels formed from recombinant collagen variants as a cell delivery scaffold. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1363-1372, 2018.
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Affiliation(s)
- Richard A Que
- Department of Biomedical Engineering, University of California, Irvine, California, 92697
| | - Janahan Arulmoli
- Department of Biomedical Engineering, University of California, Irvine, California, 92697.,Sue & Bill Gross Stem Cell Research Center, University of California, Irvine, California, 92697
| | - Nancy A Da Silva
- Department of Biomedical Engineering, University of California, Irvine, California, 92697.,Department of Chemical Engineering and Materials Science, University of California, Irvine, California, 92697
| | - Lisa A Flanagan
- Department of Biomedical Engineering, University of California, Irvine, California, 92697.,Sue & Bill Gross Stem Cell Research Center, University of California, Irvine, California, 92697.,Department of Neurology, University of California, Irvine, California, 92697
| | - Szu-Wen Wang
- Department of Biomedical Engineering, University of California, Irvine, California, 92697.,Department of Chemical Engineering and Materials Science, University of California, Irvine, California, 92697
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20
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Mahumane GD, Kumar P, du Toit LC, Choonara YE, Pillay V. 3D scaffolds for brain tissue regeneration: architectural challenges. Biomater Sci 2018; 6:2812-2837. [DOI: 10.1039/c8bm00422f] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Critical analysis of experimental studies on 3D scaffolds for brain tissue engineering.
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Affiliation(s)
- Gillian Dumsile Mahumane
- Wits Advanced Drug Delivery Platform Research Unit
- Department of Pharmacy and Pharmacology
- School of Therapeutic Science
- Faculty of Health Sciences
- University of the Witwatersrand
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit
- Department of Pharmacy and Pharmacology
- School of Therapeutic Science
- Faculty of Health Sciences
- University of the Witwatersrand
| | - Lisa Claire du Toit
- Wits Advanced Drug Delivery Platform Research Unit
- Department of Pharmacy and Pharmacology
- School of Therapeutic Science
- Faculty of Health Sciences
- University of the Witwatersrand
| | - Yahya Essop Choonara
- Wits Advanced Drug Delivery Platform Research Unit
- Department of Pharmacy and Pharmacology
- School of Therapeutic Science
- Faculty of Health Sciences
- University of the Witwatersrand
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit
- Department of Pharmacy and Pharmacology
- School of Therapeutic Science
- Faculty of Health Sciences
- University of the Witwatersrand
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21
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Thomas M, Willerth SM. 3-D Bioprinting of Neural Tissue for Applications in Cell Therapy and Drug Screening. Front Bioeng Biotechnol 2017; 5:69. [PMID: 29204424 PMCID: PMC5698280 DOI: 10.3389/fbioe.2017.00069] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 10/19/2017] [Indexed: 01/18/2023] Open
Abstract
Neurodegenerative diseases affect millions of individuals in North America and cost the health-care industry billions of dollars for treatment. Current treatment options for degenerative diseases focus on physical rehabilitation or drug therapies, which temporarily mask the effects of cell damage, but quickly lose their efficacy. Cell therapies for the central nervous system remain an untapped market due to the complexity involved in growing neural tissues, controlling their differentiation, and protecting them from the hostile environment they meet upon implantation. Designing tissue constructs for the discovery of better drug treatments are also limited due to the resolution needed for an accurate cellular representation of the brain, in addition to being expensive and difficult to translate to biocompatible materials. 3-D printing offers a streamlined solution for engineering brain tissue for drug discovery or, in the future, for implantation. New microfluidic and bioplotting devices offer increased resolution, little impact on cell viability and have been tested with several bioink materials including fibrin, collagen, hyaluronic acid, poly(caprolactone), and poly(ethylene glycol). This review details current efforts at bioprinting neural tissue and highlights promising avenues for future work.
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Affiliation(s)
- Michaela Thomas
- Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
| | - Stephanie M. Willerth
- Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Centre for Biomedical Research, University of Victoria, Victoria, BC, Canada
- International Collaboration on Repair Discoveries (ICORD), Vancouver, BC, Canada
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22
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Davoust C, Plas B, Béduer A, Demain B, Salabert AS, Sol JC, Vieu C, Vaysse L, Loubinoux I. Regenerative potential of primary adult human neural stem cells on micropatterned bio-implants boosts motor recovery. Stem Cell Res Ther 2017; 8:253. [PMID: 29116017 PMCID: PMC5688800 DOI: 10.1186/s13287-017-0702-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 09/25/2017] [Accepted: 10/18/2017] [Indexed: 01/19/2023] Open
Abstract
Background The adult brain is unable to regenerate itself sufficiently after large injuries. Therefore, hopes rely on therapies using neural stem cell or biomaterial transplantation to sustain brain reconstruction. The aim of the present study was to evaluate the improvement in sensorimotor recovery brought about by human primary adult neural stem cells (hNSCs) in combination with bio-implants. Methods hNSCs were pre-seeded on implants micropatterned for neurite guidance and inserted intracerebrally 2 weeks after a primary motor cortex lesion in rats. Long-term behaviour was significantly improved after hNSC implants versus cell engraftment in the grip strength test. MRI and immunohistological studies were conducted to elucidate the underlying mechanisms of neuro-implant integration. Results hNSC implants promoted tissue reconstruction and limited hemispheric atrophy and glial scar expansion. After 3 months, grafted hNSCs were detected on implants and expressed mature neuronal markers (NeuN, MAP2, SMI312). They also migrated over a short distance to the reconstructed tissues and to the peri-lesional tissues, where 26% integrated as mature neurons. Newly formed host neural progenitors (nestin, DCX) colonized the implants, notably in the presence of hNSCs, and participated in tissue reconstruction. The microstructured bio-implants sustained the guided maturation of both grafted hNSCs and endogenous progenitors. Conclusions These immunohistological results are coherent with and could explain the late improvement observed in sensorimotor recovery. These findings provide novel insights into the regenerative potential of primary adult hNSCs combined with microstructured implants.
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Affiliation(s)
- Carole Davoust
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
| | - Benjamin Plas
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France.,Centre Hospitalier Universitaire de Toulouse, Pôle Neurosciences, CHU Toulouse, Toulouse, France
| | - Amélie Béduer
- LAAS-CNRS, Université de Toulouse, CNRS, INSA, UPS, Toulouse, France
| | - Boris Demain
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
| | - Anne-Sophie Salabert
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France.,Centre Hospitalier Universitaire de Toulouse, Pôle Neurosciences, CHU Toulouse, Toulouse, France
| | - Jean Christophe Sol
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France.,Centre Hospitalier Universitaire de Toulouse, Pôle Neurosciences, CHU Toulouse, Toulouse, France
| | - Christophe Vieu
- LAAS-CNRS, Université de Toulouse, CNRS, INSA, UPS, Toulouse, France
| | - Laurence Vaysse
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
| | - Isabelle Loubinoux
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France. .,UMR1214-Inserm/UPS-ToNIC, CHU PURPAN, Pavillon Baudot, Place du Dr Baylac, 31024, Toulouse cedex 3, France.
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23
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Spurlock MS, Ahmed AI, Rivera KN, Yokobori S, Lee SW, Sam PN, Shear DA, Hefferan MP, Hazel TG, Johe KK, Gajavelli S, Tortella FC, Bullock RM. Amelioration of Penetrating Ballistic-Like Brain Injury Induced Cognitive Deficits after Neuronal Differentiation of Transplanted Human Neural Stem Cells. J Neurotrauma 2017; 34:1981-1995. [PMID: 28249550 DOI: 10.1089/neu.2016.4602] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Penetrating traumatic brain injury (PTBI) is one of the major cause of death and disability worldwide. Previous studies with penetrating ballistic-like brain injury (PBBI), a PTBI rat model revealed widespread perilesional neurodegeneration, similar to that seen in humans following gunshot wound to the head, which is unmitigated by any available therapies to date. Therefore, we evaluated human neural stem cell (hNSC) engraftment to putatively exploit the potential of cell therapy that has been seen in other central nervous system injury models. Toward this objective, green fluorescent protein (GFP) labeled hNSC (400,000 per animal) were transplanted in immunosuppressed Sprague-Dawley (SD), Fisher, and athymic (ATN) PBBI rats 1 week after injury. Tacrolimus (3 mg/kg 2 days prior to transplantation, then 1 mg/kg/day), methylprednisolone (10 mg/kg on the day of transplant, 1 mg/kg/week thereafter), and mycophenolate mofetil (30 mg/kg/day) for 7 days following transplantation were used to confer immunosuppression. Engraftment in SD and ATN was comparable at 8 weeks post-transplantation. Evaluation of hNSC differentiation and distribution revealed increased neuronal differentiation of transplanted cells with time. At 16 weeks post-transplantation, neither cell proliferation nor glial lineage markers were detected. Transplanted cell morphology was similar to that of neighboring host neurons, and there was relatively little migration of cells from the peritransplant site. By 16 weeks, GFP-positive processes extended both rostrocaudally and bilaterally into parenchyma, spreading along host white matter tracts, traversing the internal capsule, and extending ∼13 mm caudally from transplantation site reaching into the brainstem. In a Morris water maze test at 8 weeks post-transplantation, animals with transplants had shorter latency to platform than vehicle-treated animals. However, weak injury-induced cognitive deficits in the control group at the delayed time point confounded benefits of durable engraftment and neuronal differentiation. Therefore, these results justify further studies to progress towards clinical translation of hNSC therapy for PTBI.
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Affiliation(s)
| | | | | | | | | | | | - Deborah A Shear
- 2 Branch of Brain Trauma Neuroprotection and Neurorestoration, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research , Silver Spring, Maryland
| | | | | | | | | | - Frank C Tortella
- 2 Branch of Brain Trauma Neuroprotection and Neurorestoration, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research , Silver Spring, Maryland
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24
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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: 12] [Impact Index Per Article: 1.5] [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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Ajioka I. Biomaterial-engineering and neurobiological approaches for regenerating the injured cerebral cortex. Regen Ther 2016; 3:63-67. [PMID: 31245474 PMCID: PMC6581816 DOI: 10.1016/j.reth.2016.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/08/2016] [Accepted: 02/12/2016] [Indexed: 01/07/2023] Open
Abstract
The cerebral cortex is responsible for higher functions of the central nervous system (CNS), such as movement, sensation, and cognition. When the cerebral cortex is severely injured, these functions are irreversibly impaired. Although recent neurobiological studies reveal that the cortex has the potential for regeneration, therapies for functional recovery face some technological obstacles. Biomaterials have been used to evoke regenerative potential and promote regeneration in several tissues, including the CNS. This review presents a brief overview of new therapeutic strategies for cortical regeneration from the perspectives of neurobiology and biomaterial engineering, and discusses a promising technology for evoking the regenerative potential of the cerebral cortex.
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Affiliation(s)
- Itsuki Ajioka
- Center for Brain Integration Research (CBIR), Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan,The Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan,Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Tokyo 113-8510, Japan. Fax: +81 3 5803 4716.
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26
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Vilariño-Feltrer G, Martínez-Ramos C, Monleón-de-la-Fuente A, Vallés-Lluch A, Moratal D, Barcia Albacar JA, Monleón Pradas M. Schwann-cell cylinders grown inside hyaluronic-acid tubular scaffolds with gradient porosity. Acta Biomater 2016; 30:199-211. [PMID: 26518102 DOI: 10.1016/j.actbio.2015.10.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/21/2015] [Accepted: 10/26/2015] [Indexed: 11/19/2022]
Abstract
Cell transplantation therapies in the nervous system are frequently hampered by glial scarring and cell drain from the damaged site, among others. To improve this situation, new biomaterials may be of help. Here, novel single-channel tubular conduits based on hyaluronic acid (HA) with and without poly-l-lactide acid fibers in their lumen were fabricated. Rat Schwann cells were seeded within the conduits and cultured for 10days. The conduits possessed a three-layered porous structure that impeded the leakage of the cells seeded in their interior and made them impervious to cell invasion from the exterior, while allowing free transport of nutrients and other molecules needed for cell survival. The channel's surface acted as a template for the formation of a cylindrical sheath-like tapestry of Schwann cells continuously spanning the whole length of the lumen. Schwann-cell tubes having a diameter of around 0.5mm and variable lengths can thus be generated. This structure is not found in nature and represents a truly engineered tissue, the outcome of the specific cell-material interactions. The conduits might be useful to sustain and protect cells for transplantation, and the biohybrids here described, together with neuronal precursors, might be of help in building bridges across significant distances in the central and peripheral nervous system. STATEMENT OF SIGNIFICANCE The paper entitled "Schwann-cell cylinders grown inside hyaluronic-acid tubular scaffolds with gradient porosity" reports on the development of a novel tubular scaffold and on how this scaffold acts on Schwann cells seeded in its interior as a template to produce macroscopic hollow continuous cylinders of tightly joined Schwann cells. This cellular structure is not found in nature and represents a truly engineered novel tissue, which obtains as a consequence of the specific cell-material interactions within the scaffold.
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Affiliation(s)
- G Vilariño-Feltrer
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - C Martínez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - A Monleón-de-la-Fuente
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - A Vallés-Lluch
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - D Moratal
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - J A Barcia Albacar
- Servicio de Neurocirugía, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), C/ Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - M Monleón Pradas
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain.
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Gennai S, Monsel A, Hao Q, Liu J, Gudapati V, Barbier EL, Lee JW. Cell-based therapy for traumatic brain injury. Br J Anaesth 2015; 115:203-12. [PMID: 26170348 DOI: 10.1093/bja/aev229] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Traumatic brain injury is a major economic burden to hospitals in terms of emergency department visits, hospitalizations, and utilization of intensive care units. Current guidelines for the management of severe traumatic brain injuries are primarily supportive, with an emphasis on surveillance (i.e. intracranial pressure) and preventive measures to reduce morbidity and mortality. There are no direct effective therapies available. Over the last fifteen years, pre-clinical studies in regenerative medicine utilizing cell-based therapy have generated enthusiasm as a possible treatment option for traumatic brain injury. In these studies, stem cells and progenitor cells were shown to migrate into the injured brain and proliferate, exerting protective effects through possible cell replacement, gene and protein transfer, and release of anti-inflammatory and growth factors. In this work, we reviewed the pathophysiological mechanisms of traumatic brain injury, the biological rationale for using stem cells and progenitor cells, and the results of clinical trials using cell-based therapy for traumatic brain injury. Although the benefits of cell-based therapy have been clearly demonstrated in pre-clinical studies, some questions remain regarding the biological mechanisms of repair and safety, dose, route and timing of cell delivery, which ultimately will determine its optimal clinical use.
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Affiliation(s)
- S Gennai
- Department of Emergency Medicine, Grenoble University Hospital, La Tronche, France
| | - A Monsel
- Multidisciplinary Intensive Care Unit, Department of Anesthesiology and Critical Care, La Pitié-Salpêtrière Hospital, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Q Hao
- Department of Anesthesiology, University of California San Francisco, 505 Parnassus Ave., Box 0648, San Francisco, CA 94143, USA
| | - J Liu
- Department of Anesthesiology, University of California San Francisco, 505 Parnassus Ave., Box 0648, San Francisco, CA 94143, USA
| | - V Gudapati
- Department of Anesthesiology, University of California San Francisco, 505 Parnassus Ave., Box 0648, San Francisco, CA 94143, USA
| | - E L Barbier
- Grenoble Institut des Neurosciences, Unité Inserm U 836, La Tronche, France
| | - J W Lee
- Department of Anesthesiology, University of California San Francisco, 505 Parnassus Ave., Box 0648, San Francisco, CA 94143, USA
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28
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Yuan N, Tian W, Sun L, Yuan R, Tao J, Chen D. Neural stem cell transplantation in a double-layer collagen membrane with unequal pore sizes for spinal cord injury repair. Neural Regen Res 2014; 9:1014-9. [PMID: 25206753 PMCID: PMC4146296 DOI: 10.4103/1673-5374.133160] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2014] [Indexed: 11/04/2022] Open
Abstract
A novel double-layer collagen membrane with unequal pore sizes in each layer was designed and tested in this study. The inner, loose layer has about 100-μm-diameter pores, while the outer, compact layer has about 10-μm-diameter pores. In a rat model of incomplete spinal cord injury, a large number of neural stem cells were seeded into the loose layer, which was then adhered to the injured side, and the compact layer was placed against the lateral side. The results showed that the transplantation of neural stem cells in a double-layer collagen membrane with unequal pore sizes promoted the differentiation of neural stem cells, attenuated the pathological lesion, and significantly improved the motor function of the rats with incomplete spinal cord injuries. These experimental findings suggest that the transplantation of neural stem cells in a double-layer collagen membrane with unequal pore sizes is an effective therapeutic strategy to repair an injured spinal cord.
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Affiliation(s)
- Ning Yuan
- Department of Spine, Beijing Jishuitan Hospital, Beijing, China
| | - Wei Tian
- Department of Spine, Beijing Jishuitan Hospital, Beijing, China
| | - Lei Sun
- Beijing Institute of Orthopedics and Traumatology, Beijing, China
| | - Runying Yuan
- Beijing Institute of Orthopedics and Traumatology, Beijing, China
| | - Jianfeng Tao
- Beijing Institute of Orthopedics and Traumatology, Beijing, China
| | - Dafu Chen
- Beijing Institute of Orthopedics and Traumatology, Beijing, China
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29
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Skop NB, Calderon F, Cho CH, Gandhi CD, Levison SW. Improvements in biomaterial matrices for neural precursor cell transplantation. MOLECULAR AND CELLULAR THERAPIES 2014; 2:19. [PMID: 26056586 PMCID: PMC4452047 DOI: 10.1186/2052-8426-2-19] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 06/05/2014] [Indexed: 12/24/2022]
Abstract
Progress is being made in developing neuroprotective strategies for traumatic brain injuries; however, there will never be a therapy that will fully preserve neurons that are injured from moderate to severe head injuries. Therefore, to restore neurological function, regenerative strategies will be required. Given the limited regenerative capacity of the resident neural precursors of the CNS, many investigators have evaluated the regenerative potential of transplanted precursors. Unfortunately, these precursors do not thrive when engrafted without a biomaterial scaffold. In this article we review the types of natural and synthetic materials that are being used in brain tissue engineering applications for traumatic brain injury and stroke. We also analyze modifications of the scaffolds including immobilizing drugs, growth factors and extracellular matrix molecules to improve CNS regeneration and functional recovery. We conclude with a discussion of some of the challenges that remain to be solved towards repairing and regenerating the brain.
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Affiliation(s)
- Nolan B Skop
- Department of Neurology & Neurosciences, Rutgers University-New Jersey Medical School, NJMS-Cancer Center, H-1226, 205 South Orange Ave., Newark, NJ 07103 USA ; Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102 USA
| | - Frances Calderon
- Department of Neurology & Neurosciences, Rutgers University-New Jersey Medical School, NJMS-Cancer Center, H-1226, 205 South Orange Ave., Newark, NJ 07103 USA
| | - Cheul H Cho
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102 USA
| | - Chirag D Gandhi
- Department of Neurology & Neurosciences, Rutgers University-New Jersey Medical School, NJMS-Cancer Center, H-1226, 205 South Orange Ave., Newark, NJ 07103 USA ; Department of Neurological Surgery, Rutgers University-New Jersey Medical School, New Jersey Medical School, Newark, NJ 07103 USA
| | - Steven W Levison
- Department of Neurology & Neurosciences, Rutgers University-New Jersey Medical School, NJMS-Cancer Center, H-1226, 205 South Orange Ave., Newark, NJ 07103 USA
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30
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He B, Yuan X, Jiang D. Molecular self-assembly guides the fabrication of peptide nanofiber scaffolds for nerve repair. RSC Adv 2014. [DOI: 10.1039/c4ra01826e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The particular features render ionic self-complementary peptide-formed and peptide amphiphile-formed nanofiber scaffolds to be compelling biomaterial substrates for nerve repair.
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Affiliation(s)
- Bin He
- Department of Orthopedics
- The First Affiliated Hospital of Chongqing Medical University
- Chongqing, China
| | - Xiao Yuan
- Department of Cardiology
- The First Affiliated Hospital of Chongqing Medical University
- Chongqing, China
| | - Dianming Jiang
- Department of Orthopedics
- The First Affiliated Hospital of Chongqing Medical University
- Chongqing, China
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