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Detante O, Legris L, Moisan A, Rome C. Cell Therapy and Functional Recovery of Stroke. Neuroscience 2024; 550:79-88. [PMID: 38013148 DOI: 10.1016/j.neuroscience.2023.11.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/19/2023] [Accepted: 11/22/2023] [Indexed: 11/29/2023]
Abstract
Stroke is the most common cause of disability. Brain repair mechanisms are often insufficient to allow a full recovery. Stroke damage involve all brain cell type and extracellular matrix which represent the crucial "glio-neurovascular niche" useful for brain plasticity. Regenerative medicine including cell therapies hold great promise to decrease post-stroke disability of many patients, by promoting both neuroprotection and neural repair through direct effects on brain lesion and/or systemic effects such as immunomodulation. Mechanisms of action vary according to each grafted cell type: "peripheral" stem cells, such as mesenchymal stem cells (MSC), can provide paracrine trophic support, and neural stem/progenitor cells (NSC) or neurons can act as direct cells' replacements. Optimal time window, route, and doses are still debated, and may depend on the chosen medicinal product and its expected mechanism such as neuroprotection, delayed brain repair, systemic effects, or graft survival and integration in host network. MSC, mononuclear cells (MNC), umbilical cord stem cells and NSC are the most investigated. Innovative approaches are implemented concerning combinatorial approaches with growth factors and biomaterials such as injectable hydrogels which could protect a cell graft and/or deliver drugs into the post-stroke cavity at chronic stages. Through main publications of the last two decades, we provide in this review concepts and suggestions to improve future translational researches and larger clinical trials of cell therapy in stroke.
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Affiliation(s)
- Olivier Detante
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institute Neurosciences, 38000 Grenoble, France; Stroke Unit, Neurology, CHU Grenoble Alpes, CS10217, 38043 Grenoble, France; Axe Neurosciences Cliniques - Innovative Brain Therapies, CHU Grenoble Alpes, 38000 Grenoble, France.
| | - Loic Legris
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institute Neurosciences, 38000 Grenoble, France; Stroke Unit, Neurology, CHU Grenoble Alpes, CS10217, 38043 Grenoble, France; Axe Neurosciences Cliniques - Innovative Brain Therapies, CHU Grenoble Alpes, 38000 Grenoble, France.
| | - Anaick Moisan
- Axe Neurosciences Cliniques - Innovative Brain Therapies, CHU Grenoble Alpes, 38000 Grenoble, France; Cell Therapy and Engineering Unit, EFS Rhône Alpes, 464 route de Lancey, 38330 Saint Ismier, France.
| | - Claire Rome
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institute Neurosciences, 38000 Grenoble, France; Stroke Unit, Neurology, CHU Grenoble Alpes, CS10217, 38043 Grenoble, France; Axe Neurosciences Cliniques - Innovative Brain Therapies, CHU Grenoble Alpes, 38000 Grenoble, France.
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2
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Grijalva-Otero I, Doncel-Pérez E. Traumatic Human Spinal Cord Injury: Are Single Treatments Enough to Solve the Problem? Arch Med Res 2024; 55:102935. [PMID: 38157747 DOI: 10.1016/j.arcmed.2023.102935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/17/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024]
Abstract
Traumatic spinal cord injury (SCI) results in partial or complete motor deficits, such as paraplegia, tetraplegia, and sphincter control, as well as sensory disturbances and autonomic dysregulation such as arterial hypotension, lack of sweating, and alterations in skin lability. All this has a strong psychological impact on the affected person and his/her family, as well as costs to healthcare institutions with an economic burden in the short, medium, and long terms. Despite at least forty years of experimental animal studies and several clinical trials with different therapeutic strategies, effective therapy is not universally accepted. Most of the published works on acute and chronic injury use a single treatment, such as medication, trophic factor, transplant of a cell type, and so on, to block some secondary injury mechanisms or promote some mechanisms of structural/functional restoration. However, despite significant results in experimental models, the outcome is a moderate improvement in muscle strength, sensation, or eventually in sphincter control, which has been considered non-significant in human clinical trials. Here we present a brief compilation of successful individual treatments that have been applied to secondary mechanisms of action. These studies show limited neuroprotective or neurorestorative approaches in animal models and clinical trials. Thus, the few benefits achieved so far represent a rationale to further explore other strategies that seek better structural and functional restoration of the injured spinal cord.
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Affiliation(s)
- Israel Grijalva-Otero
- Medical Research Unit for Neurological Diseases, Unidad Médica de Alta Especialidad, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.
| | - Ernesto Doncel-Pérez
- Neural Regeneration Group, Hospital Nacional de Parapléjicos de Toledo, Servicios de Salud de Castilla-La Mancha, Toledo, Spain
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Lambrichts I, Wolfs E, Bronckaers A, Gervois P, Vangansewinkel T. The Effect of Leukocyte- and Platelet-Rich Fibrin on Central and Peripheral Nervous System Neurons-Implications for Biomaterial Applicability. Int J Mol Sci 2023; 24:14314. [PMID: 37762617 PMCID: PMC10532231 DOI: 10.3390/ijms241814314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Leukocyte- and Platelet-Rich Fibrin (L-PRF) is a second-generation platelet concentrate that is prepared directly from the patient's own blood. It is widely used in the field of regenerative medicine, and to better understand its clinical applicability we aimed to further explore the biological properties and effects of L-PRF on cells from the central and peripheral nervous system. To this end, L-PRF was prepared from healthy human donors, and confocal, transmission, and scanning electron microscopy as well as secretome analysis were performed on these clots. In addition, functional assays were completed to determine the effect of L-PRF on neural stem cells (NSCs), primary cortical neurons (pCNs), and peripheral dorsal root ganglion (DRG) neurons. We observed that L-PRF consists of a dense but porous fibrin network, containing leukocytes and aggregates of activated platelets that are distributed throughout the clot. Antibody array and ELISA confirmed that it is a reservoir for a plethora of growth factors. Key molecules that are known to have an effect on neuronal cell functions such as brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), vascular endothelial growth factor (VEGF), and platelet-derived growth factor (PDGF) were slowly released over time from the clots. Next, we found that the L-PRF secretome had no significant effect on the proliferative and metabolic activity of NSCs, but it did act as a chemoattractant and improved the migration of these CNS-derived stem cells. More importantly, L-PRF growth factors had a detrimental effect on the survival of pCNs, and consequently, also interfered with their neurite outgrowth. In contrast, we found a positive effect on peripheral DRG neurons, and L-PRF growth factors improved their survival and significantly stimulated the outgrowth and branching of their neurites. Taken together, our study demonstrates the positive effects of the L-PRF secretome on peripheral neurons and supports its use in regenerative medicine but care should be taken when using it for CNS applications.
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Affiliation(s)
- Ivo Lambrichts
- Cardio and Organ Systems, Biomedical Research Institute, UHasselt—Hasselt University, 3590 Diepenbeek, Belgium; (E.W.); (A.B.); (P.G.)
| | - Esther Wolfs
- Cardio and Organ Systems, Biomedical Research Institute, UHasselt—Hasselt University, 3590 Diepenbeek, Belgium; (E.W.); (A.B.); (P.G.)
| | - Annelies Bronckaers
- Cardio and Organ Systems, Biomedical Research Institute, UHasselt—Hasselt University, 3590 Diepenbeek, Belgium; (E.W.); (A.B.); (P.G.)
| | - Pascal Gervois
- Cardio and Organ Systems, Biomedical Research Institute, UHasselt—Hasselt University, 3590 Diepenbeek, Belgium; (E.W.); (A.B.); (P.G.)
| | - Tim Vangansewinkel
- Cardio and Organ Systems, Biomedical Research Institute, UHasselt—Hasselt University, 3590 Diepenbeek, Belgium; (E.W.); (A.B.); (P.G.)
- VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, 3000 Leuven, Belgium
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4
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Yonesi M, Ramos M, Ramirez-Castillejo C, Fernández-Serra R, Panetsos F, Belarra A, Chevalier M, Rojo FJ, Pérez-Rigueiro J, Guinea GV, González-Nieto D. Resistance to Degradation of Silk Fibroin Hydrogels Exposed to Neuroinflammatory Environments. Polymers (Basel) 2023; 15:polym15112491. [PMID: 37299290 DOI: 10.3390/polym15112491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/18/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Central nervous system (CNS) diseases represent an extreme burden with significant social and economic costs. A common link in most brain pathologies is the appearance of inflammatory components that can jeopardize the stability of the implanted biomaterials and the effectiveness of therapies. Different silk fibroin scaffolds have been used in applications related to CNS disorders. Although some studies have analyzed the degradability of silk fibroin in non-cerebral tissues (almost exclusively upon non-inflammatory conditions), the stability of silk hydrogel scaffolds in the inflammatory nervous system has not been studied in depth. In this study, the stability of silk fibroin hydrogels exposed to different neuroinflammatory contexts has been explored using an in vitro microglial cell culture and two in vivo pathological models of cerebral stroke and Alzheimer's disease. This biomaterial was relatively stable and did not show signs of extensive degradation across time after implantation and during two weeks of in vivo analysis. This finding contrasted with the rapid degradation observed under the same in vivo conditions for other natural materials such as collagen. Our results support the suitability of silk fibroin hydrogels for intracerebral applications and highlight the potentiality of this vehicle for the release of molecules and cells for acute and chronic treatments in cerebral pathologies.
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Affiliation(s)
- Mahdi Yonesi
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
| | - Milagros Ramos
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Carmen Ramirez-Castillejo
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
| | - Rocío Fernández-Serra
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Silk Biomed SL, Calle Navacerrada 18, Urb. Puerto Galapagar, 28260 Madrid, Spain
| | - Fivos Panetsos
- Silk Biomed SL, Calle Navacerrada 18, Urb. Puerto Galapagar, 28260 Madrid, Spain
- Bioactive Surfaces SL, Puerto de Navacerrada 18. Galapagar, 28260 Madrid, Spain
- Neurocomputing and Neurorobotics Research Group, Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Biomaterials and Regenerative Medicine Group, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, 28040 Madrid, Spain
| | - Adrián Belarra
- Laboratorio Micro-CT UCM, Departamento de Radiología, Rehabilitación y Fisioterapia, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Margarita Chevalier
- Laboratorio Micro-CT UCM, Departamento de Radiología, Rehabilitación y Fisioterapia, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Francisco J Rojo
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Silk Biomed SL, Calle Navacerrada 18, Urb. Puerto Galapagar, 28260 Madrid, Spain
- Bioactive Surfaces SL, Puerto de Navacerrada 18. Galapagar, 28260 Madrid, Spain
- Biomaterials and Regenerative Medicine Group, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, 28040 Madrid, Spain
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Silk Biomed SL, Calle Navacerrada 18, Urb. Puerto Galapagar, 28260 Madrid, Spain
- Bioactive Surfaces SL, Puerto de Navacerrada 18. Galapagar, 28260 Madrid, Spain
- Biomaterials and Regenerative Medicine Group, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, 28040 Madrid, Spain
| | - Gustavo V Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Silk Biomed SL, Calle Navacerrada 18, Urb. Puerto Galapagar, 28260 Madrid, Spain
- Bioactive Surfaces SL, Puerto de Navacerrada 18. Galapagar, 28260 Madrid, Spain
- Biomaterials and Regenerative Medicine Group, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, 28040 Madrid, Spain
| | - Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Spain
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Silk Biomed SL, Calle Navacerrada 18, Urb. Puerto Galapagar, 28260 Madrid, Spain
- Bioactive Surfaces SL, Puerto de Navacerrada 18. Galapagar, 28260 Madrid, Spain
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5
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Minkelyte K, Li D, Li Y, Ibrahim A. Transplantation of Cryopreserved Olfactory Ensheathing Cells Restores Loss of Functions in an Experimental Model. Cell Transplant 2023; 32:9636897231199319. [PMID: 37771302 PMCID: PMC10541729 DOI: 10.1177/09636897231199319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 09/30/2023] Open
Abstract
In the past decades, the properties of olfactory ensheathing cells (OECs) have been widely investigated. Studies have shown that transplantation of OECs cultured from the olfactory bulb mediates axonal regeneration, remyelination and restores lost functions in experimental central nervous system (CNS) injury models. Autologously sourcing the cells from the nasal mucosa or the olfactory bulb to treat patients with spinal cord injuries would be ideal, but the cell yield achieved may be inadequate to cover the surface area of the lesions typically encountered in human spinal cord contusion injuries. Therefore, banking allogenic cryopreserved olfactory bulb cells from donors or generating cell lines could provide a marked increase in cell stock available for transplantation. This study is undertaken in two control and two intervention groups. The control groups have lesions alone and lesions with collagen gel but without cells. The intervention groups have either transplantation of primary cultured olfactory bulb OECs (bOECs) encapsulated in collagen gel or cryopreserved bulb OECs (CbOECs) encapsulated in collagen gel. Here, we report that transplantation of cryopreserved rat bOECs encapsulated in collagen restored the loss of function in a vertical climbing test in a unilateral C6-T1 dorsal root injury model. The loss of function returns in 80% of rats with injuries in about 3 weeks comparable to that we observed after transplantation of primary cultured bOECs. The regeneration axons induced by the transplant are identified by neurofilament antibodies and ensheathed by OECs. Our results indicate that cryopreserved OECs retain their properties of inducing axon regeneration and restoring loss of function in the experimental model. This is a step forward to translate the research into future clinical applications.
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Affiliation(s)
- Kamile Minkelyte
- Spinal Repair Unit, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, Queen Square, London, UK
| | - Daqing Li
- Spinal Repair Unit, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, Queen Square, London, UK
| | - Ying Li
- Spinal Repair Unit, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, Queen Square, London, UK
| | - Ahmed Ibrahim
- Spinal Repair Unit, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, Queen Square, London, UK
- Imperial College Healthcare NHS Trust, London, UK
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Liu T, Zhu W, Zhang X, He C, Liu X, Xin Q, Chen K, Wang H. Recent Advances in Cell and Functional Biomaterial Treatment for Spinal Cord Injury. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5079153. [PMID: 35978649 PMCID: PMC9377911 DOI: 10.1155/2022/5079153] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/17/2022] [Accepted: 07/25/2022] [Indexed: 12/17/2022]
Abstract
Spinal cord injury (SCI) is a devastating central nervous system disease caused by accidental events, resulting in loss of sensory and motor function. Considering the multiple effects of primary and secondary injuries after spinal cord injury, including oxidative stress, tissue apoptosis, inflammatory response, and neuronal autophagy, it is crucial to understand the underlying pathophysiological mechanisms, local microenvironment changes, and neural tissue functional recovery for preparing novel treatment strategies. Treatment based on cell transplantation has become the forefront of spinal cord injury therapy. The transplanted cells provide physical and nutritional support for the damaged tissue. At the same time, the implantation of biomaterials with specific biological functions at the site of the SCI has also been proved to improve the local inhibitory microenvironment and promote axonal regeneration, etc. The combined transplantation of cells and functional biomaterials for SCI treatment can result in greater neuroprotective and regenerative effects by regulating cell differentiation, enhancing cell survival, and providing physical and directional support for axon regeneration and neural circuit remodeling. This article reviews the pathophysiology of the spinal cord, changes in the microenvironment after injury, and the mechanisms and strategies for spinal cord regeneration and repair. The article will focus on summarizing and discussing the latest intervention models based on cell and functional biomaterial transplantation and the latest progress in combinational therapies in SCI repair. Finally, we propose the future prospects and challenges of current treatment regimens for SCI repair, to provide references for scientists and clinicians to seek better SCI repair strategies in the future.
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Affiliation(s)
- Tianyi Liu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun 130021, China
| | - Wenhao Zhu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun 130021, China
| | - Xiaoyu Zhang
- Department of Neurosurgery, First Hospital of Jilin University, Changchun 130021, China
| | - Chuan He
- Department of Neurosurgery, First Hospital of Jilin University, Changchun 130021, China
| | - Xiaolong Liu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun 130021, China
| | - Qiang Xin
- Department of Neurosurgery, First Hospital of Jilin University, Changchun 130021, China
| | - Kexin Chen
- Institute of Translational Medicine, First Hospital of Jilin University, Changchun 130021, China
| | - Haifeng Wang
- Department of Neurosurgery, First Hospital of Jilin University, Changchun 130021, China
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Hacene S, Le Friec A, Desmoulin F, Robert L, Colitti N, Fitremann J, Loubinoux I, Cirillo C. Present and future avenues of cell-based therapy for brain injury: The enteric nervous system as a potential cell source. Brain Pathol 2022; 32:e13105. [PMID: 35773942 PMCID: PMC9425017 DOI: 10.1111/bpa.13105] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/09/2022] [Indexed: 01/01/2023] Open
Abstract
Cell therapy is a promising strategy in the field of regenerative medicine; however, several concerns limit the effective clinical use, namely a valid cell source. The gastrointestinal tract, which contains a highly organized network of nerves called the enteric nervous system (ENS), is a valuable reservoir of nerve cells. Together with neurons and neuronal precursor cells, it contains glial cells with a well described neurotrophic potential and a newly identified neurogenic one. Recently, enteric glia is looked at as a candidate for cell therapy in intestinal neuropathies. Here, we present the therapeutic potential of the ENS as cell source for brain repair, too. The example of stroke is introduced as a brain injury where cell therapy appears promising. This disease is the first cause of handicap in adults. The therapies developed in recent years allow a partial response to the consequences of the disease. The only prospect of recovery in the chronic phase is currently based on rehabilitation. The urgency to offer other treatments is therefore tangible. In the first part of the review, some elements of stroke pathophysiology are presented. An update on the available therapeutic strategies is provided, focusing on cell‐ and biomaterial‐based approaches. Following, the ENS is presented with its anatomical and functional characteristics, focusing on glial cells. The properties of these cells are depicted, with particular attention to their neurotrophic and, recently identified, neurogenic properties. Finally, preliminary data on a possible therapeutic approach combining ENS‐derived cells and a biomaterial are presented.
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Affiliation(s)
- Sirine Hacene
- National Veterinary School of Toulouse, University of Toulouse, Toulouse, France.,Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse-Paul Sabatier, Toulouse, France
| | - Alice Le Friec
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse-Paul Sabatier, Toulouse, France.,Department of Biological and Chemical Engineering-Medical Biotechnology, Aarhus University, Aarhus, Denmark
| | - Franck Desmoulin
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse-Paul Sabatier, Toulouse, France
| | - Lorenne Robert
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse-Paul Sabatier, Toulouse, France
| | - Nina Colitti
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse-Paul Sabatier, Toulouse, France
| | - Juliette Fitremann
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse-Paul Sabatier, Toulouse, France
| | - Isabelle Loubinoux
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse-Paul Sabatier, Toulouse, France
| | - Carla Cirillo
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse-Paul Sabatier, Toulouse, France
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8
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Hamami R, Simaan-Yameen H, Gargioli C, Seliktar D. Comparison of Four Different Preparation Methods for Making Injectable Microgels for Tissue Engineering and Cell Therapy. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2022. [DOI: 10.1007/s40883-022-00261-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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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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Development of a New Formulation Based on In Situ Photopolymerized Polymer for the Treatment of Spinal Cord Injury. Polymers (Basel) 2021; 13:polym13244274. [PMID: 34960825 PMCID: PMC8705720 DOI: 10.3390/polym13244274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/01/2021] [Accepted: 12/03/2021] [Indexed: 12/04/2022] Open
Abstract
Spinal Cord Injury (SCI) promotes a cascade of inflammatory events that are responsible for neuronal death and glial scar formation at the site of the injury, hindering tissue neuroregeneration. Among the main approaches for the treatment of SCI, the use of biomaterials, especially gelatin methacryloyl (GelMA), has been proposed because it is biocompatible, has excellent mechanical properties, favoring cell adhesion and proliferation. In addition, it can act as a carrier of anti-inflammatory drugs, preventing the formation of glial scars. The present work presents the development and in situ application of a light-curing formulation based on GelMA containing a natural extract rich in anti-inflammatory, antioxidant and neuroprotective substances (hydroalcoholic extract of red propolis—HERP) in an experimental model of SCI in rats. The formulations were prepared and characterized by time of UV exposition, FTIR, swelling and degradation. The hydrogels containing 1 mg/mL of HERP were obtained by the exposure to UV radiation of 2 μL of the formulation for 60 s. The locomotor evaluation of the animals was performed by the scale (BBB) and demonstrated that after 3 and 7 days of the injury, the GelMA-HERP group (BBB = 5 and 7) presented greater recovery compared to the GelMA group (BBB = 4 and 5). Regarding the inflammatory process, using histomorphological techniques, there was an inflammation reduction in the groups treated with GelMA and GelMA-HERP, with decreases of cavitation in the injury site. Therefore, it is possible to conclude that the use of GelMA and GelMA-HERP hydrogel formulations is a promising strategy for the treatment of SCI when applied in situ, as soon as possible after the injury, improving the clinical and inflammatory conditions of the treated animals.
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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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12
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Rey F, Barzaghini B, Nardini A, Bordoni M, Zuccotti GV, Cereda C, Raimondi MT, Carelli S. Advances in Tissue Engineering and Innovative Fabrication Techniques for 3-D-Structures: Translational Applications in Neurodegenerative Diseases. Cells 2020; 9:cells9071636. [PMID: 32646008 PMCID: PMC7407518 DOI: 10.3390/cells9071636] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/01/2020] [Accepted: 07/06/2020] [Indexed: 12/11/2022] Open
Abstract
In the field of regenerative medicine applied to neurodegenerative diseases, one of the most important challenges is the obtainment of innovative scaffolds aimed at improving the development of new frontiers in stem-cell therapy. In recent years, additive manufacturing techniques have gained more and more relevance proving the great potential of the fabrication of precision 3-D scaffolds. In this review, recent advances in additive manufacturing techniques are presented and discussed, with an overview on stimulus-triggered approaches, such as 3-D Printing and laser-based techniques, and deposition-based approaches. Innovative 3-D bioprinting techniques, which allow the production of cell/molecule-laden scaffolds, are becoming a promising frontier in disease modelling and therapy. In this context, the specific biomaterial, stiffness, precise geometrical patterns, and structural properties are to be considered of great relevance for their subsequent translational applications. Moreover, this work reports numerous recent advances in neural diseases modelling and specifically focuses on pre-clinical and clinical translation for scaffolding technology in multiple neurodegenerative diseases.
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Affiliation(s)
- Federica Rey
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, Via Grassi 74, 20157 Milan, Italy; (F.R.); (G.V.Z.)
- Pediatric Clinical Research Center Fondazione “Romeo ed Enrica Invernizzi”, University of Milano, Via Grassi 74, 20157 Milano, Italy
| | - Bianca Barzaghini
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (B.B.); (A.N.)
| | - Alessandra Nardini
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (B.B.); (A.N.)
| | - Matteo Bordoni
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy;
| | - Gian Vincenzo Zuccotti
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, Via Grassi 74, 20157 Milan, Italy; (F.R.); (G.V.Z.)
- Pediatric Clinical Research Center Fondazione “Romeo ed Enrica Invernizzi”, University of Milano, Via Grassi 74, 20157 Milano, Italy
| | - Cristina Cereda
- Genomic and post-Genomic Center, IRCCS Mondino Foundation, Via Mondino 2, 27100 Pavia, Italy;
| | - Manuela Teresa Raimondi
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (B.B.); (A.N.)
- Correspondence: (M.T.R.); (S.C.); Tel.: +390-223-994-306 (M.T.R.); +390-250-319-825 (S.C.)
| | - Stephana Carelli
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, Via Grassi 74, 20157 Milan, Italy; (F.R.); (G.V.Z.)
- Pediatric Clinical Research Center Fondazione “Romeo ed Enrica Invernizzi”, University of Milano, Via Grassi 74, 20157 Milano, Italy
- Correspondence: (M.T.R.); (S.C.); Tel.: +390-223-994-306 (M.T.R.); +390-250-319-825 (S.C.)
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13
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Esteban-Garcia N, Nombela C, Garrosa J, Rascón-Ramirez FJ, Barcia JA, Sánchez-Sánchez-Rojas L. Neurorestoration Approach by Biomaterials in Ischemic Stroke. Front Neurosci 2020; 14:431. [PMID: 32477053 PMCID: PMC7235425 DOI: 10.3389/fnins.2020.00431] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/08/2020] [Indexed: 12/11/2022] Open
Abstract
Ischemic stroke (IS) is the leading cause of disability in the western world, assuming a high socio-economic cost. One of the most used strategies in the last decade has been biomaterials, which have been initially used with a structural support function. They have been perfected, different compounds have been combined, and they have been used together with cell therapy or controlled release chemical compounds. This double function has driven them as potential candidates for the chronic treatment of IS. In fact, the most developed are in different phases of clinical trial. In this review, we will show the ischemic scenario and address the most important criteria to achieve a successful neuroreparation from the point of view of biomaterials. The spontaneous processes that are activated and how to enhance them is one of the keys that contribute to the success of the therapeutic approach. In addition, the different routes of administration and how they affect the design of biomaterials are analyzed. Future perspectives show where this broad scientific field is heading, which advances every day with the help of technology and advanced therapies.
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Affiliation(s)
- Noelia Esteban-Garcia
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain
| | - Cristina Nombela
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain.,Department of Biological and Health Psychology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Javier Garrosa
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain
| | | | - Juan Antonio Barcia
- Neurosurgery Department, Clínico San Carlos Hospital, Madrid, Spain.,Chair of Neurosurgery Department, Clínico San Carlos Hospital, Madrid, Spain
| | - Leyre Sánchez-Sánchez-Rojas
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain
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14
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Ojeda-Hernández DD, Canales-Aguirre AA, Matias-Guiu J, Gomez-Pinedo U, Mateos-Díaz JC. Potential of Chitosan and Its Derivatives for Biomedical Applications in the Central Nervous System. Front Bioeng Biotechnol 2020; 8:389. [PMID: 32432095 PMCID: PMC7214799 DOI: 10.3389/fbioe.2020.00389] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 04/07/2020] [Indexed: 12/12/2022] Open
Abstract
It is well known that the central nervous system (CNS) has a limited regenerative capacity and that many therapeutic molecules cannot cross the blood brain barrier (BBB). The use of biomaterials has emerged as an alternative to overcome these limitations. For many years, biomedical applications of chitosan have been studied due to its remarkable biological properties, biocompatibility, and high versatility. Moreover, the interest in this biomaterial for CNS biomedical implementation has increased because of its ability to cross the BBB, mucoadhesiveness, and hydrogel formation capacity. Several chitosan-based biomaterials have been applied with promising results as drug, cell and gene delivery vehicles. Moreover, their capacity to form porous scaffolds and to bear cells and biomolecules has offered a way to achieve neural regeneration. Therefore, this review aims to bring together recent works that highlight the potential of chitosan and its derivatives as adequate biomaterials for applications directed toward the CNS. First, an overview of chitosan and its derivatives is provided with an emphasis on the properties that favor different applications. Second, a compilation of works that employ chitosan-based biomaterials for drug delivery, gene therapy, tissue engineering, and regenerative medicine in the CNS is presented. Finally, the most interesting trends and future perspectives of chitosan and its derivatives applications in the CNS are shown.
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Affiliation(s)
- Doddy Denise Ojeda-Hernández
- Biotecnología Industrial, CONACYT Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), Zapopan, Mexico
| | - Alejandro A Canales-Aguirre
- Unidad de Evaluación Preclínica, Biotecnología Médica y Farmacéutica, CONACYT Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), Guadalajara, Mexico
| | - Jorge Matias-Guiu
- Servicio de Neurología, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Ulises Gomez-Pinedo
- Servicio de Neurología, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Juan C Mateos-Díaz
- Biotecnología Industrial, CONACYT Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), Zapopan, Mexico
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15
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González-Nieto D, Fernández-Serra R, Pérez-Rigueiro J, Panetsos F, Martinez-Murillo R, Guinea GV. Biomaterials to Neuroprotect the Stroke Brain: A Large Opportunity for Narrow Time Windows. Cells 2020; 9:E1074. [PMID: 32357544 PMCID: PMC7291200 DOI: 10.3390/cells9051074] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 12/14/2022] Open
Abstract
Ischemic stroke represents one of the most prevalent pathologies in humans and is a leading cause of death and disability. Anti-thrombolytic therapy with tissue plasminogen activator (t-PA) and surgical thrombectomy are the primary treatments to recanalize occluded vessels and normalize the blood flow in ischemic and peri-ischemic regions. A large majority of stroke patients are refractory to treatment or are not eligible due to the narrow time window of therapeutic efficacy. In recent decades, we have significantly increased our knowledge of the molecular and cellular mechanisms that inexorably lead to progressive damage in infarcted and peri-lesional brain areas. As a result, promising neuroprotective targets have been identified and exploited in several stroke models. However, these considerable advances have been unsuccessful in clinical contexts. This lack of clinical translatability and the emerging use of biomaterials in different biomedical disciplines have contributed to developing a new class of biomaterial-based systems for the better control of drug delivery in cerebral disorders. These systems are based on specific polymer formulations structured in nanoparticles and hydrogels that can be administered through different routes and, in general, bring the concentrations of drugs to therapeutic levels for prolonged times. In this review, we first provide the general context of the molecular and cellular mechanisms impaired by cerebral ischemia, highlighting the role of excitotoxicity, inflammation, oxidative stress, and depolarization waves as the main pathways and targets to promote neuroprotection avoiding neuronal dysfunction. In the second part, we discuss the versatile role played by distinct biomaterials and formats to support the sustained administration of particular compounds to neuroprotect the cerebral tissue at risk of damage.
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Affiliation(s)
- Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Rocío Fernández-Serra
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Fivos Panetsos
- Neurocomputing and Neurorobotics Research Group: Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain;
- Brain Plasticity Group, Health Research Institute of the Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain
| | | | - Gustavo V. Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
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16
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Cuccione E, Chhour P, Si-Mohamed S, Dumot C, Kim J, Hubert V, Da Silva CC, Vandamme M, Chereul E, Balegamire J, Chevalier Y, Berthezène Y, Boussel L, Douek P, Cormode DP, Wiart M. Multicolor spectral photon counting CT monitors and quantifies therapeutic cells and their encapsulating scaffold in a model of brain damage. Nanotheranostics 2020; 4:129-141. [PMID: 32483519 PMCID: PMC7256015 DOI: 10.7150/ntno.45354] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 04/04/2020] [Indexed: 12/13/2022] Open
Abstract
Rationale & aim: Various types of cell therapies are currently under investigation for the treatment of ischemic stroke patients. To bridge the gap between cell administration and therapeutic outcome, there is a need for non-invasive monitoring of these innovative therapeutic approaches. Spectral photon counting computed tomography (SPCCT) is a new imaging modality that may be suitable for cell tracking. SPCCT is the next generation of clinical CT that allows the selective visualization and quantification of multiple contrast agents. The aims of this study are: (i) to demonstrate the feasibility of using SPCCT to longitudinally monitor and quantify therapeutic cells, i.e. bone marrow-derived M2-polarized macrophages transplanted in rats with brain damage; and (ii) to evaluate the potential of this approach to discriminate M2-polarized macrophages from their encapsulating scaffold. Methods: Twenty one rats received an intralesional transplantation of bone marrow-derived M2-polarized macrophages. In the first set of experiments, cells were labeled with gold nanoparticles and tracked for up to two weeks post-injection in a monocolor study via gold K-edge imaging. In the second set of experiments, the same protocol was repeated for a bicolor study, in which the labeled cells are embedded in iodine nanoparticle-labeled scaffold. The amount of gold in the brain was longitudinally quantified using gold K-edge images reconstructed from SPCCT acquisition. Animals were sacrificed at different time points post-injection, and ICP-OES was used to validate the accuracy of gold quantification from SPCCT imaging. Results: The feasibility of therapeutic cell tracking was successfully demonstrated in brain-damaged rats with SPCCT imaging. The imaging modality enabled cell monitoring for up to 2 weeks post-injection, in a specific and quantitative manner. Differentiation of labeled cells and their embedding scaffold was also feasible with SPCCT imaging, with a detection limit as low as 5,000 cells in a voxel of 250 × 250 × 250 µm in dimension in vivo. Conclusion: Multicolor SPCCT is an innovative translational imaging tool that allows monitoring and quantification of therapeutic cells and their encapsulating scaffold transplanted in the damaged rat brain.
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Affiliation(s)
- Elisa Cuccione
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
- VOXCAN, 1 avenue Bourgelat, 69280 Marcy l'Etoile, France
| | - Peter Chhour
- Department of Radiology, University of Pennsylvania, Pennsylvania, United States
| | - Salim Si-Mohamed
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - Chloé Dumot
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
| | - Johoon Kim
- Department of Radiology, University of Pennsylvania, Pennsylvania, United States
| | - Violaine Hubert
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
| | - Claire Crola Da Silva
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
| | - Marc Vandamme
- VOXCAN, 1 avenue Bourgelat, 69280 Marcy l'Etoile, France
| | | | - Joëlle Balegamire
- LAGEPP, University of Lyon 1, CNRS UMR 5007, 43 bd 11 Novembre, 69622 Villeurbanne, France
| | - Yves Chevalier
- LAGEPP, University of Lyon 1, CNRS UMR 5007, 43 bd 11 Novembre, 69622 Villeurbanne, France
| | - Yves Berthezène
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - Loïc Boussel
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - Philippe Douek
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - David P. Cormode
- Department of Radiology, University of Pennsylvania, Pennsylvania, United States
| | - Marlène Wiart
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
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17
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Pal A, Smith CI, Palade J, Nagaraju S, Alarcon-Benedetto BA, Kilbourne J, Rawls A, Wilson-Rawls J, Vernon BL, Nikkhah M. Poly(N-isopropylacrylamide)-based dual-crosslinking biohybrid injectable hydrogels for vascularization. Acta Biomater 2020; 107:138-151. [PMID: 32126310 DOI: 10.1016/j.actbio.2020.02.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 02/20/2020] [Accepted: 02/26/2020] [Indexed: 12/17/2022]
Abstract
Injectable hydrogels provide a powerful and non-invasive approach for numerous applications in cell transplantation, growth factor delivery, tissue regeneration and so forth. The properties of injectable hydrogels should be well-tuned for specific applications, where their overall design should ensure biocompatibility, non-toxicity, robust mechanical properties, and most importantly the ability to promote vascularization and integration with the host tissue/organ. Among these criteria, vascularization remains a key design element in the development of functional therapeutic hydrogels for successful translation into clinical settings. To that end, there is still a critical need for the development of the next generation of injectable hydrogels with precisely tuned biophysical and biochemical properties which could simultaneously promote tissue vascularization. In this work, we developed a temperature responsive, dual-crosslinking, biohybrid hydrogels, modified with a vasculogenic peptide for applications in regenerative medicine, specifically tissue vascularization. The synthesized hydrogels consisted of poly(N-isopropylacrylamide)-based copolymer, functionalized gelation and angiogenic VEGF-mimetic QK peptide with enhanced shear-thinning and injectability properties. QK peptide is a VEGF-mimetic vasculogenic peptide which binds to VEGF receptors and activates intercellular pathway for vascularization. Apart from the presence of QK peptide, the mechanical properties of the hydrogels were precisely tuned by altering the polymer concentration, enabling successful assembly and endothelial cell network formation. Extended in vitro studies demonstrated successful encapsulation and homogeneous distribution of endothelial cells within the three-dimensional (3D) environment of the hydrogel matrix with significantly enhanced vascularization in presence of the QK peptide as early as 3 days of culture. A small, preliminary in vivo study in mice showed a trend of increased blood vessel formation in hydrogels that incorporated the QK peptide. Overall, our study presents the design and characterization of injectable, dual-crosslinking and vasculogenic hydrogels with controlled properties which could be utilized for numerous applications in regenerative medicine, minimally invasive cell and drug delivery as well as fundamental studies on tissue vascularization and angiogenesis. STATEMENT OF SIGNIFICANCE: In this work, we synthesized a new class of temperature responsive, dual-crosslinking, biohybrid injectable hydrogels with enhanced vascularization properties for broad applications in regenerative medicine and minimally invasive cell/drug delivery. The developed hydrogels properly accommodated 3D culture, assembly and network formation of endothelial cells, as evidenced by in vitro and in vivo studies.
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Affiliation(s)
- Amrita Pal
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA
| | - Cameron I Smith
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Joanna Palade
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Supriya Nagaraju
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA
| | - Byron A Alarcon-Benedetto
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA
| | - Jacquelyn Kilbourne
- Department of Animal Care Technologies, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Alan Rawls
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | | | - Brent L Vernon
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA.
| | - Mehdi Nikkhah
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA; Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA.
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18
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Reginensi D, Ortiz D, Pravia A, Burillo A, Morales F, Morgan C, Jimenez L, Dave KR, Perez-Pinzon MA, Gittens RA. Role of Region-Specific Brain Decellularized Extracellular Matrix on In Vitro Neuronal Maturation. Tissue Eng Part A 2020; 26:964-978. [PMID: 32103711 DOI: 10.1089/ten.tea.2019.0277] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Recent advancements in tissue engineering suggest that biomaterials, such as decellularized extracellular matrix (ECM), could serve to potentiate the localization and efficacy of regenerative therapies in the central nervous system. Still, what factors and which mechanisms are required from these ECM-based biomaterials to exert their effect are not entirely understood. In this study, we use the brain as a novel model to test the effects of particular biochemical and structural properties by evaluating, for the first time, three different sections of the brain (i.e., cortex, cerebellum, and remaining areas) side-by-side and their corresponding decellularized counterparts using mechanical (4-day) and chemical (1-day) decellularization protocols. The three different brain subregions had considerably different initial conditions in terms of cell number and growth factor content, and some of these differences were maintained after decellularization. Decellularized ECM from both protocols was used as a substrate or as soluble factor, in both cases showing good cell attachment and growth capabilities. Interestingly, the 1-day protocol was capable of promoting greater differentiation than the 4-day protocol, probably due to its capacity to remove a similar amount of cell nuclei, while better conserving the biochemical and structural components of the cerebral ECM. Still, some limitations of this study include the need to evaluate the response in other biologically relevant cell types, as well as a more detailed characterization of the components in the decellularized ECM of the different brain subregions. In conclusion, our results show differences in neuronal maturation depending on the region of the brain used to produce the scaffolds. Complex organs such as the brain have subregions with very different initial cellular and biochemical conditions that should be considered for decellularization to minimize exposure to immunogenic components, while retaining bioactive factors conducive to regeneration. [Figure: see text] Impact statement The present study offers new knowledge about the production of decellularized extracellular matrix scaffolds from specific regions of the porcine brain, with a direct comparison of their effect on in vitro neuronal maturation. Our results show differences in neuronal maturation depending on the region of the brain used to produce the scaffolds, suggesting that it is necessary to consider the initial cellular content of the source tissue and its bioactive capacity for the production of an effective regenerative therapy for stroke.
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Affiliation(s)
- Diego Reginensi
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama.,School of Medicine, Universidad de Panamá, Panama, Republic of Panama.,Biomedical Engineering Program, Universidad Latina de Panamá, Panama, Republic of Panama
| | - Didio Ortiz
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
| | - Andrea Pravia
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama.,Biotechnology Program, Universidad Latina de Panamá, Panama, Republic of Panama
| | - Andrea Burillo
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
| | - Félix Morales
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
| | - Carly Morgan
- CREO-MIHRT Program, University of California, Santa Cruz, California.,Materials Science & Engineering Program, University of Washington, Seattle, Washington
| | - Lindsay Jimenez
- CREO-MIHRT Program, University of California, Santa Cruz, California.,Biomedical Engineering Program, University of Connecticut, Storrs, Connecticut
| | - Kunjan R Dave
- The Peritz Scheinberg Cerebral Vascular Disease Research Laboratories, Neurology Department, University of Miami Miller School of Medicine, Miami, Florida.,Neuroscience Program, University of Miami Miller School of Medicine, Miami, Florida
| | - Miguel A Perez-Pinzon
- The Peritz Scheinberg Cerebral Vascular Disease Research Laboratories, Neurology Department, University of Miami Miller School of Medicine, Miami, Florida.,Neuroscience Program, University of Miami Miller School of Medicine, Miami, Florida
| | - Rolando A Gittens
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama.,Centro de Biodiversidad y Descubrimiento de Drogas, INDICASAT AIP, City of Knowledge, Panama, Republic of Panama
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19
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Bolan F, Louca I, Heal C, Cunningham CJ. The Potential of Biomaterial-Based Approaches as Therapies for Ischemic Stroke: A Systematic Review and Meta-Analysis of Pre-clinical Studies. Front Neurol 2019; 10:924. [PMID: 31507524 PMCID: PMC6718570 DOI: 10.3389/fneur.2019.00924] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 08/09/2019] [Indexed: 01/07/2023] Open
Abstract
Background: In recent years pre-clinical stroke research has shown increased interest in the development of biomaterial-based therapies to promote tissue repair and functional recovery. Such strategies utilize biomaterials as structural support for tissue regeneration or as delivery vehicles for therapeutic agents. While a range of biomaterials have been tested in stroke models, currently no overview is available for evaluating the benefit of these approaches. We therefore performed a systematic review and meta-analysis of studies investigating the use of biomaterials for the treatment of stroke in experimental animal models. Methods: Studies were identified by searching electronic databases (PubMed, Web of Science) and reference lists of relevant review articles. Studies reporting lesion volume and/or neurological score were included. Standardized mean difference (SMD) and 95% confidence intervals were calculated using DerSimonian and Laird random effects. Study quality and risk of bias was assessed using the CAMARADES checklist. Publication bias was visualized by funnel plots followed by trim and fill analysis of missing publications. Results: A total of 66 publications were included in the systematic review, of which 44 (86 comparisons) were assessed in the meta-analysis. Overall, biomaterial-based interventions improved both lesion volume (SMD: -2.98, 95% CI: -3.48, -2.48) and neurological score (SMD: -2.3, 95% CI: -2.85, -1.76). The median score on the CAMARADES checklist was 5.5/10 (IQR 4.25-6). Funnel plots of lesion volume and neurological score data revealed pronounced asymmetry and publication bias. Additionally, trim and fill analysis estimated 19 "missing" studies for the lesion volume outcome adjusting the effect size to -1.91 (95% CI: -2.44, -1.38). Conclusions: Biomaterials including scaffolds and particles exerted a positive effect on histological and neurological outcomes in pre-clinical stroke models. However, heterogeneity in the field, publication bias and study quality scores which may be another source of bias call for standardization of outcome measures and improved study reporting.
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Affiliation(s)
- Faye Bolan
- Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Irene Louca
- Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Calvin Heal
- Faculty of Biology, Medicine and Health, Centre for Biostatistics, Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom
| | - Catriona J. Cunningham
- Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom,*Correspondence: Catriona J. Cunningham
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20
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Modern Concepts in Regenerative Therapy for Ischemic Stroke: From Stem Cells for Promoting Angiogenesis to 3D-Bioprinted Scaffolds Customized via Carotid Shear Stress Analysis. Int J Mol Sci 2019; 20:ijms20102574. [PMID: 31130624 PMCID: PMC6566983 DOI: 10.3390/ijms20102574] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 02/06/2023] Open
Abstract
Ischemic stroke is associated with a tremendous economic and societal burden, and only a few therapies are currently available for the treatment of this devastating disease. The main therapeutic approaches used nowadays for the treatment of ischemic brain injury aim to achieve reperfusion, neuroprotection and neurorecovery. Therapeutic angiogenesis also seems to represent a promising tool to improve the prognosis of cerebral ischemia. This review aims to present the modern concepts and the current status of regenerative therapy for ischemic stroke and discuss the main results of major clinical trials addressing the effectiveness of stem cell therapy for achieving neuroregeneration in ischemic stroke. At the same time, as a glimpse into the future, this article describes modern concepts for stroke prevention, such as the implantation of bioprinted scaffolds seeded with stem cells, whose 3D geometry is customized according to carotid shear stress.
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21
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Pu Y. Comparison of different types of endovascular mechanical embolectomy in acute ischemic stroke. Rev Assoc Med Bras (1992) 2019; 65:342-347. [PMID: 30994831 DOI: 10.1590/1806-9282.65.3.342] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 08/05/2018] [Indexed: 11/22/2022] Open
Abstract
SUMMARY Background: To compare the treatment efficacy of different types of endovascular mechanical embolectomy in acute ischemic stroke (AIS). Material and Methods: A total of 89 patients with AIS were selected in our hospital from January 2014 to January 2016 and divided into tPA group (n=27), tPA+Trevo group (n=30) and tPA+Solitaire FR group (n=32) for different treatments. Treatment effectiveness was evaluated using NIHSS and mRS system. The NIHSS score, vascular recanalization rate and postoperative complications were compared among groups. Results: The NIHSS score of the tPA group was significantly lower than that of other two groups at 1 d after the operation (p < 0.05), but it was significantly higher than that of other two groups at 3 d and 3 w after the operation (p < 0.05). After the treatment, no significant difference in NIHSS score was found between the tPA+Trevo and tPA Solitaire FR groups. The revascularization rate was significantly higher, but the mortality rate in 90 d was significantly lower in the tPA+Trevo and tPA+Solitaire FR groups than that in the tPA group (p < 0.05), and no significant difference was found between the tPA+Trevo and tPA+Solitaire FR groups. The incidence rate of symptomatic intracranial hemorrhage was significantly lower in the tPA+Solitaire FR group than that in tPA+Trevo group (p < 0.05) or tPA group (p < 0.01). Significantly more patients with mRS no higher than 2 points were found in the tPA+Trevo and tPA+Solitaire FR groups than those in tPA group (p < 0.05), and no significant difference was found between the tPA+Trevo and tPA+Solitaire FR groups. Conclusion: TPA+Solitaire FR is a type of thrombectomy that is superior to tPA and tPA+Trevo in the treatment of patients with AIS.
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Affiliation(s)
- Yuan Pu
- Nanjing Durm Tower hospital Group, China
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22
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Pal A, Vernon BL, Nikkhah M. Therapeutic neovascularization promoted by injectable hydrogels. Bioact Mater 2018; 3:389-400. [PMID: 30003178 PMCID: PMC6038261 DOI: 10.1016/j.bioactmat.2018.05.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/27/2018] [Accepted: 05/02/2018] [Indexed: 12/11/2022] Open
Abstract
The aim of therapeutic neovascularization is to repair ischemic tissues via formation of new blood vessels by delivery of angiogenic growth factors, stem cells or expansion of pre-existing cells. For efficient neovascularization, controlled release of growth factors is particularly necessary since bolus injection of molecules generally lead to a poor outcome due to inadequate retention within the injured site. In this regard, injectable hydrogels, made of natural, synthetic or hybrid biomaterials, have become a promising solution for efficient delivery of angiogenic factors or stem and progenitor cells for in situ tissue repair, regeneration and neovascularization. This review article will broadly discuss the state-of-the-art in the development of injectable hydrogels from natural and synthetic precursors, and their applications in ischemic tissue repair and wound healing. We will cover a wide range of in vitro and in vivo studies in testing the functionalities of the engineered injectable hydrogels in promoting tissue repair and neovascularization. We will also discuss some of the injectable hydrogels that exhibit self-healing properties by promoting neovascularization without the presence of angiogenic factors.
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Affiliation(s)
| | - Brent L. Vernon
- School of Biological and Health Systems Engineering, Arizona State University, Arizona 85281, USA
| | - Mehdi Nikkhah
- School of Biological and Health Systems Engineering, Arizona State University, Arizona 85281, USA
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23
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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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24
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Zamproni LN, Grinet MAVM, Mundim MTVV, Reis MBC, Galindo LT, Marciano FR, Lobo AO, Porcionatto M. Rotary jet-spun porous microfibers as scaffolds for stem cells delivery to central nervous system injury. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 15:98-107. [PMID: 30244084 DOI: 10.1016/j.nano.2018.08.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/10/2018] [Indexed: 12/20/2022]
Abstract
Stem cell transplantation is a promising strategy to treat brain injuries. However, cell-based therapies are limited because poor local cell engraftment. Here, we present a polylactic acid (PLA) scaffold to support mesenchymal stem cells (MSCs) delivery in stroke. We isolated bone marrow MSCs from adult C57/Bl6 mice, cultured them on PLA polymeric rough microfibrous (PRM) scaffolds obtained by rotary jet spinning, and transplanted over the brains of adult C57/Bl6 mice, carrying thermocoagulation-induced cortical stroke. No inflammatory response to PRM was found. MSCs transplantation significantly reduced the area of the lesion and PRM delivery increased MSCs retention at the injury site. In addition, PRM upregulated α6-integrin and CXCL12 production, which may be the cause for greater cell retention at the lesion site and may provide additional benefit to MSCs transplantation procedures. We conclude that PRM scaffolds offer a promising new system to deliver stem cells to injured areas of the brain.
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Affiliation(s)
- Laura N Zamproni
- Neurobiology Lab, Universidade Federal de São Paulo, São Paulo, SP, Brazil; Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | | | - Mayara T V V Mundim
- Neurobiology Lab, Universidade Federal de São Paulo, São Paulo, SP, Brazil; Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Marcella B C Reis
- Neurobiology Lab, Universidade Federal de São Paulo, São Paulo, SP, Brazil; Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Layla T Galindo
- Neurobiology Lab, Universidade Federal de São Paulo, São Paulo, SP, Brazil; Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Fernanda R Marciano
- Instituto de Ciência e Tecnologia, Universidade Brasil, São Paulo, SP, Brazil
| | - Anderson O Lobo
- Instituto de Ciência e Tecnologia, Universidade Brasil, São Paulo, SP, Brazil; Programa de Pós-graduação em Ciência e Engenharia de Materiais, Universidade Federal do Piaui, Teresina, PI, Brazil.
| | - Marimelia Porcionatto
- Neurobiology Lab, Universidade Federal de São Paulo, São Paulo, SP, Brazil; Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
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25
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Hydrogel Scaffolds: Towards Restitution of Ischemic Stroke-Injured Brain. Transl Stroke Res 2018; 10:1-18. [DOI: 10.1007/s12975-018-0655-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/17/2018] [Accepted: 08/19/2018] [Indexed: 12/27/2022]
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26
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Stradecki-Cohan HM, Cohan CH, Raval AP, Dave KR, Reginensi D, Gittens RA, Youbi M, Perez-Pinzon MA. Cognitive Deficits after Cerebral Ischemia and Underlying Dysfunctional Plasticity: Potential Targets for Recovery of Cognition. J Alzheimers Dis 2018; 60:S87-S105. [PMID: 28453486 DOI: 10.3233/jad-170057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cerebral ischemia affects millions of people worldwide and survivors suffer from long-term functional and cognitive deficits. While stroke and cardiac arrest are typically considered when discussing ischemic brain injuries, there is much evidence that smaller ischemic insults underlie neurodegenerative diseases, including Alzheimer's disease. The "regenerative" capacity of the brain relies on several aspects of plasticity that are crucial for normal functioning; less affected brain areas may take over function previously performed by irreversibly damaged tissue. To harness the endogenous plasticity mechanisms of the brain to provide recovery of cognitive function, we must first understand how these mechanisms are altered after damage, such as cerebral ischemia. In this review, we discuss the long-term cognitive changes that result after cerebral ischemia and how ischemia alters several plasticity processes. We conclude with a discussion of how current and prospective therapies may restore brain plasticity and allow for recovery of cognitive function, which may be applicable to several disorders that have a disruption of cognitive processing, including traumatic brain injury and Alzheimer's disease.
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Affiliation(s)
- Holly M Stradecki-Cohan
- Department of Neurology Cerebral Vascular Disease Research Laboratories, Miami, FL, USA.,Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Charles H Cohan
- Department of Neurology Cerebral Vascular Disease Research Laboratories, Miami, FL, USA
| | - Ami P Raval
- Department of Neurology Cerebral Vascular Disease Research Laboratories, Miami, FL, USA
| | - Kunjan R Dave
- Department of Neurology Cerebral Vascular Disease Research Laboratories, Miami, FL, USA.,Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Diego Reginensi
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
| | - Rolando A Gittens
- Centro de Neurociencias, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
| | - Mehdi Youbi
- Department of Neurology Cerebral Vascular Disease Research Laboratories, Miami, FL, USA
| | - Miguel A Perez-Pinzon
- Department of Neurology Cerebral Vascular Disease Research Laboratories, Miami, FL, USA.,Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
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27
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González-Nieto D, Fernández-García L, Pérez-Rigueiro J, Guinea GV, Panetsos F. Hydrogels-Assisted Cell Engraftment for Repairing the Stroke-Damaged Brain: Chimera or Reality. Polymers (Basel) 2018; 10:polym10020184. [PMID: 30966220 PMCID: PMC6415003 DOI: 10.3390/polym10020184] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/06/2018] [Accepted: 02/11/2018] [Indexed: 01/07/2023] Open
Abstract
The use of advanced biomaterials as a structural and functional support for stem cells-based therapeutic implants has boosted the development of tissue engineering applications in multiple clinical fields. In relation to neurological disorders, we are still far from the clinical reality of restoring normal brain function in neurodegenerative diseases and cerebrovascular disorders. Hydrogel polymers show unique mechanical stiffness properties in the range of living soft tissues such as nervous tissue. Furthermore, the use of these polymers drastically enhances the engraftment of stem cells as well as their capacity to produce and deliver neuroprotective and neuroregenerative factors in the host tissue. Along this article, we review past and current trends in experimental and translational research to understand the opportunities, benefits, and types of tentative hydrogel-based applications for the treatment of cerebral disorders. Although the use of hydrogels for brain disorders has been restricted to the experimental area, the current level of knowledge anticipates an intense development of this field to reach clinics in forthcoming years.
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Affiliation(s)
- Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
| | - Laura Fernández-García
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid 28040 Madrid, Spain.
| | - Gustavo V Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid 28040 Madrid, Spain.
| | - Fivos Panetsos
- Neurocomputing and Neurorobotics Research Group: Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain.
- Instituto de Investigación Sanitaria, Hospital Clínico San Carlos Madrid, IdISSC, 28040 Madrid, Spain.
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28
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Liu S, Schackel T, Weidner N, Puttagunta R. Biomaterial-Supported Cell Transplantation Treatments for Spinal Cord Injury: Challenges and Perspectives. Front Cell Neurosci 2018; 11:430. [PMID: 29375316 PMCID: PMC5768640 DOI: 10.3389/fncel.2017.00430] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 12/20/2017] [Indexed: 12/17/2022] Open
Abstract
Spinal cord injury (SCI), resulting in para- and tetraplegia caused by the partial or complete disruption of descending motor and ascending sensory neurons, represents a complex neurological condition that remains incurable. Following SCI, numerous obstacles comprising of the loss of neural tissue (neurons, astrocytes, and oligodendrocytes), formation of a cavity, inflammation, loss of neuronal circuitry and function must be overcome. Given the multifaceted primary and secondary injury events that occur with SCI treatment options are likely to require combinatorial therapies. While several methods have been explored, only the intersection of two, cell transplantation and biomaterial implantation, will be addressed in detail here. Owing to the constant advance of cell culture technologies, cell-based transplantation has come to the forefront of SCI treatment in order to replace/protect damaged tissue and provide physical as well as trophic support for axonal regrowth. Biomaterial scaffolds provide cells with a protected environment from the surrounding lesion, in addition to bridging extensive damage and providing physical and directional support for axonal regrowth. Moreover, in this combinatorial approach cell transplantation improves scaffold integration and therefore regenerative growth potential. Here, we review the advances in combinatorial therapies of Schwann cells (SCs), astrocytes, olfactory ensheathing cells (OECs), mesenchymal stem cells, as well as neural stem and progenitor cells (NSPCs) with various biomaterial scaffolds.
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Affiliation(s)
- Shengwen Liu
- Spinal Cord Injury Center, Heidelberg University Hospital, Heidelberg, Germany
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Thomas Schackel
- Spinal Cord Injury Center, Heidelberg University Hospital, Heidelberg, Germany
| | - Norbert Weidner
- Spinal Cord Injury Center, Heidelberg University Hospital, Heidelberg, Germany
| | - Radhika Puttagunta
- Spinal Cord Injury Center, Heidelberg University Hospital, Heidelberg, Germany
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29
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Chen J, Yang C, Xu X, Yang Y, Xu B. The effect of focal cerebral ischemia-reperfusion injury on TLR4 and NF-κB signaling pathway. Exp Ther Med 2018; 15:897-903. [PMID: 29399096 PMCID: PMC5772796 DOI: 10.3892/etm.2017.5463] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 10/24/2017] [Indexed: 11/13/2022] Open
Abstract
The present study analyzed the change of Toll-like receptor 4 (TLR4) and nuclear factor-κB (NF-κB) expression in focal cerebral ischemia-reperfusion injury model. A sample of 36 Sprague-Dawley rats were randomly selected and divided into sham operation group (group S), control group (group C) and Chrysanthemum ester group (NF-κB inhibitor, group CE), each group consisted of 12 rats. The rat model of focal cerebral ischemia-reperfusion was established. The physiological indexes and neurological severity score of rats was recorded by a double-blind method. The cerebral infarction area was evaluated by triphenyltetrazole oxide (TTC) staining on brain slices. Apoptosis was evaluated by TUNEL staining. Semi-quantitative PCR and western blot analysis was used to measure the expression of TLR4 and NF-κB. The neurological severity score of rats in group C and CE were found to be significantly lower than group S (P<0.01). The TTC staining results showed that group C and CE had different levels of cerebral infarction but the area of infarction in group CE was significantly lower than group C (P<0.01). In addition, the number of TUNEL positive cells in group CE was significantly lower than group C (P<0.01). Semi-quantitative PCR and westernblot analysis results showed that the expression of NF-κB and TLR4 of group S was significantly lower than that of group C and group CE (P<0.01), the relative expression of NF-κB and TLR4 of group CE was significantly lower than that of group C (P<0.01). Moreover, the expression of NF-κB p65/p50 of group CE and group C was significantly higher than that of group S (P<0.01). This study concludes that the focal cerebral ischemia-reperfusion injury in rats can cause brain damage and cell apoptosis. This effect might be associated to the increased expression of NF-κB and TLR4, and the activation of TLR4/NF-κB signaling pathway.
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Affiliation(s)
- Jing Chen
- No. 1 Department of Neurology, Qingdao Central Hospital, Shandong 266000, P.R. China
| | - Chenli Yang
- No. 1 Department of Neurology, Qingdao Central Hospital, Shandong 266000, P.R. China
| | - Xiang Xu
- No. 1 Department of Neurology, Qingdao Central Hospital, Shandong 266000, P.R. China
| | - Yonglin Yang
- Department of Neurosurgery, People's Hospital of Rizhao, Shandong 276800, P.R. China
| | - Bo Xu
- No. 2 Department of Neurology, Qingdao Central Hospital, Shandong 266000, P.R. China
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30
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Oliveira EP, Silva-Correia J, Reis RL, Oliveira JM. Biomaterials Developments for Brain Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1078:323-346. [PMID: 30357631 DOI: 10.1007/978-981-13-0950-2_17] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The Central Nervous System (CNS) is a highly complex organ that works as the control centre of the body, managing vital and non-vital functions. Neuro-diseases can lead to the degeneration of neural tissue, breakage of the neuronal networks which can affect vital functions and originate cognitive deficits. The complexity of the neural networks, their components and the low regenerative capacity of the CNS are on the basis for the lack of recovery, having the need for therapies that can promote tissue repair and recovery. Most brain processes are mediated through molecules (e.g. cytokines, neurotransmitters) and cells response accordingly and to surrounding cues, either biological or physical, which offers molecule administration and/or cell transplantation a great potential for use in brain recovery. Biomaterials and in particular, of natural-origin are attractive candidates owed to their intrinsic biological cues and biocompatibility and degradability. Through the use of biomaterials, it is possible to protect the cells/molecules from body clearance, enzymatic degradation while maintaining the components in a place of interest. Moreover, by means of combining several components, it is possible to obtain a more targeted and controlled delivery, to image the biomaterial implantation and its degradation over time and tackling simultaneously occurring events (cell death and inflammation) in brain diseases. In this chapter, it is reviewed some brain-affecting diseases and the current developments on tissue engineering approaches for a functional recovery of the brain from those diseases.
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Affiliation(s)
- Eduarda P Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal.,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joana Silva-Correia
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal.,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal.,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal.,The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal. .,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal. .,The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal.
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31
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Le Friec A, Salabert AS, Davoust C, Demain B, Vieu C, Vaysse L, Payoux P, Loubinoux I. Enhancing Plasticity of the Central Nervous System: Drugs, Stem Cell Therapy, and Neuro-Implants. Neural Plast 2017; 2017:2545736. [PMID: 29391951 PMCID: PMC5748136 DOI: 10.1155/2017/2545736] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/19/2017] [Accepted: 10/23/2017] [Indexed: 01/01/2023] Open
Abstract
Stroke represents the first cause of adult acquired disability. Spontaneous recovery, dependent on endogenous neurogenesis, allows for limited recovery in 50% of patients who remain functionally dependent despite physiotherapy. Here, we propose a review of novel drug therapies with strong potential in the clinic. We will also discuss new avenues of stem cell therapy in patients with a cerebral lesion. A promising future for the development of efficient drugs to enhance functional recovery after stroke seems evident. These drugs will have to prove their efficacy also in severely affected patients. The efficacy of stem cell engraftment has been demonstrated but will have to prove its potential in restoring tissue function for the massive brain lesions that are most debilitating. New answers may lay in biomaterials, a steadily growing field. Biomaterials should ideally resemble lesioned brain structures in architecture and must be proven to increase functional reconnections within host tissue before clinical testing.
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Affiliation(s)
- Alice Le Friec
- 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
- Radiopharmacy Department, CHU Toulouse, Toulouse, France
| | - Carole Davoust
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
| | - Boris Demain
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, 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
| | - Pierre Payoux
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
- Nuclear Medicine Department, CHU Toulouse, Toulouse, France
| | - Isabelle Loubinoux
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
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Ghuman H, Gerwig M, Nicholls FJ, Liu JR, Donnelly J, Badylak SF, Modo M. Long-term retention of ECM hydrogel after implantation into a sub-acute stroke cavity reduces lesion volume. Acta Biomater 2017; 63:50-63. [PMID: 28917705 DOI: 10.1016/j.actbio.2017.09.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 09/05/2017] [Accepted: 09/11/2017] [Indexed: 12/29/2022]
Abstract
Salvaging or functional replacement of damaged tissue caused by stroke in the brain remains a major therapeutic challenge. In situ gelation and retention of a hydrogel bioscaffold composed of 8mg/mL extracellular matrix (ECM) can induce a robust invasion of cells within 24h and potentially promote a structural remodeling to replace lost tissue. Herein, we demonstrate a long-term retention of ECM hydrogel within the lesion cavity. A decrease of approximately 32% of ECM volume is observed over 12weeks. Lesion volume, as measured by magnetic resonance imaging and histology, was reduced by 28%, but a battery of behavioral tests (bilateral asymmetry test; footfault; rotameter) did not reveal a therapeutic or detrimental effect of the hydrogel. Glial scarring and peri-infarct astrocytosis were equivalent between untreated and treated animals, potentially indicating that permeation into host tissue is required to exert therapeutic effects. These results reveal a marked difference of biodegradation of ECM hydrogel in the stroke-damaged brain compared to peripheral soft tissue repair. Further exploration of these structure-function relationships is required to achieve a structural remodeling of the implanted hydrogel, as seen in peripheral tissues, to replace lost tissue and promote behavioral recovery. STATEMENT OF SIGNIFICANCE In situ gelation of ECM is essential for its retention within a tissue cavity. The brain is a unique environment with restricted access that necessitates image-guided delivery through a thin needle to access tissue cavities caused by stroke, as well as other conditions, such as traumatic brain injury or glioma resection. Knowledge about a brain tissue response to implanted hydrogels remains limited, especially in terms of long-term effects and potential impact on behavioral function. We here address the long-term retention of hydrogel within the brain environment, its impact on behavioral function, as well as its ability to reduce further tissue deformation caused by stroke. This study highlights considerable differences in the brain's long-term response to an ECM hydrogel compared to peripheral soft tissue. It underlines the importance of understanding the effect of the structural presence of a hydrogel within a cavity upon host brain tissue and behavioral function. As demonstrated herein, ECM hydrogel can fill a cavity long-term to reduce further progression of the cavity, while potentially serving as a reservoir for local drug or cell delivery.
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Affiliation(s)
- Harmanvir Ghuman
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Madeline Gerwig
- Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA, USA
| | - Francesca J Nicholls
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jessie R Liu
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Julia Donnelly
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Stephen F Badylak
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Michel Modo
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA.
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Sarmah D, Kaur H, Saraf J, Pravalika K, Goswami A, Kalia K, Borah A, Wang X, Dave KR, Yavagal DR, Bhattacharya P. Getting Closer to an Effective Intervention of Ischemic Stroke: The Big Promise of Stem Cell. Transl Stroke Res 2017; 9:356-374. [PMID: 29075984 DOI: 10.1007/s12975-017-0580-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/12/2017] [Accepted: 10/17/2017] [Indexed: 12/13/2022]
Abstract
Stem cell therapy for ischemic stroke has widely been explored. Results from both preclinical and clinical studies have immensely supported the judicious use of stem cells as therapy. These provide an attractive means for preserving and replacing the damaged brain tissues following an ischemic attack. Since the past few years, researchers have used various types of stem cells to replenish insulted neuronal and glial cells in neurological disorders. In the present review, we discuss different types of stem cells employed for the treatment of ischemic stroke and mechanisms and challenges these cells face once introduced into the living system. Further, we also present different ways to maneuver and overcome challenges to translate the advances made at the preclinical level to clinics.
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Affiliation(s)
- Deepaneeta Sarmah
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Harpreet Kaur
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Jackson Saraf
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Kanta Pravalika
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Avirag Goswami
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Kiran Kalia
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Anupom Borah
- Cellular and Molecular Neurobiology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, Assam, India
| | - Xin Wang
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kunjan R Dave
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Dileep R Yavagal
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Pallab Bhattacharya
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad, Gandhinagar, Gujarat, 382355, India.
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
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34
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Pan L, Yang F, Lu C, Jia C, Wang Q, Zeng K. Effects of sevoflurane on rats with ischemic brain injury and the role of the TREK-1 channel. Exp Ther Med 2017; 14:2937-2942. [PMID: 28966677 PMCID: PMC5613197 DOI: 10.3892/etm.2017.4906] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/25/2017] [Indexed: 12/23/2022] Open
Abstract
The purpose of this investigation was to determine the effects of sevoflurane on rats with ischemic brain injury and to determine the potential role of the TREK-1 channel in this process. Normal rats were randomly divided into three groups: Sham operation, sevoflurane anesthesia or chloral hydrate anesthesia group, an additional group of TREK-1 knockout rats were also studied. Semi-quantitative PCR and western blot analysis confirmed the lack of TREK-1 expression in the brain of TREK-1 knockout rats. The thread-tie method was used to establish middle cerebral artery occlusion (MCAO) model to induce cerebral ischemic brain injury. All rates were treated for 4 days prior to ischemia (for 2 h) followed by a 24 h reperfusion period. Physiological indexes of rats in each group both prior to and after surgery showed no statistical difference (P>0.05). Neurological function was scored both before (no statistical difference) and after surgery where it was found to be significantly better (lower score) in the sevoflurane anesthesia group than in chloral hydrate anesthesia and TREK-1 knockout groups (P<0.01). The area of cerebral infarction was measured by triphenyl tetrazolium chloride staining and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay to detect the apoptosis of brain cells. TTC staining showed different degrees of cerebral infarction in the various groups; the area of cerebral infarction in sevoflurane anesthesia group was significantly lower than that in chloral hydrate anesthesia and TREK-1 knockout groups (P<0.01). TUNEL assay showed that the number of TUNEL-positive cells was significantly lower in sevoflurane anesthesia group than in TREK-1 knockout and chloral hydrate anesthesia groups (P<0.01). In conclusion, results from this investigation showed that sevoflurane can protect the nerve function of rats with cerebral ischemic brain injury possibly by affecting the expression of proteins involved in the TREK-1 signaling pathway.
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Affiliation(s)
- Lixiao Pan
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Fengyun Yang
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Caixia Lu
- Department of Obstetrics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Changxin Jia
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Qing Wang
- Department of Endocrinology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Kexue Zeng
- Department of Massage, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, P.R. China
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