1
|
Najafi H, Farahavar G, Jafari M, Abolmaali SS, Azarpira N, Tamaddon AM. Harnessing the Potential of Self-Assembled Peptide Hydrogels for Neural Regeneration and Tissue Engineering. Macromol Biosci 2024; 24:e2300534. [PMID: 38547473 DOI: 10.1002/mabi.202300534] [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: 11/21/2023] [Revised: 03/04/2024] [Indexed: 04/11/2024]
Abstract
Spinal cord injury, traumatic brain injury, and neurosurgery procedures usually lead to neural tissue damage. Self-assembled peptide (SAP) hydrogels, a type of innovative hierarchical nanofiber-forming peptide sequences serving as hydrogelators, have emerged as a promising solution for repairing tissue defects and promoting neural tissue regeneration. SAPs possess numerous features, such as adaptable morphologies, biocompatibility, injectability, tunable mechanical stability, and mimicking of the native extracellular matrix. This review explores the capacity of neural cell regeneration and examines the critical aspects of SAPs in neuroregeneration, including their biochemical composition, topology, mechanical behavior, conductivity, and degradability. Additionally, it delves into the latest strategies involving SAPs for central or peripheral neural tissue engineering. Finally, the prospects of SAP hydrogel design and development in the realm of neuroregeneration are discussed.
Collapse
Affiliation(s)
- Haniyeh Najafi
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Ghazal Farahavar
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Mahboobeh Jafari
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Samira Sadat Abolmaali
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, 71937-11351, Iran
| | - Ali Mohammad Tamaddon
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
- Department of Pharmaceutics, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| |
Collapse
|
2
|
Ait Hamdan Y, El Amerany F, Desbrières J, Aghrinane A, Oudadesse H, Rhazi M. The evolution of the global COVID-19 epidemic in Morocco and understanding the different therapeutic approaches of chitosan in the control of the pandemic. Polym Bull (Berl) 2022; 80:1-27. [PMID: 36466080 PMCID: PMC9685138 DOI: 10.1007/s00289-022-04579-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/03/2022] [Accepted: 11/14/2022] [Indexed: 11/24/2022]
Abstract
In 2020, Coronavirus disease (COVID-19), a new viral respiratory disease caused by a virus that belongs to Coronaviridae family, has been identified. It is a very severe flu that negatively affects the functions of the lung and other respiratory organs. COVID-19 virus can be transmitted between people either by touching an infected person or by direct contact with their respiratory droplets. Therefore, the COVID-19 virus has become a global concern due to its rapid spread and severity. Based on the World Health Organization report from 2 March 2020 to 24 October 2022, the total infected cases and deaths in Morocco are around 1,265,389 (3.46%) and 16,280 (0.04%), respectively. Recently, some scientists have found that chitosan, a polymer existed in nature, can inhibit COVID-19 infection and repair damaged tissue. Therefore, understanding chitosan mechanisms in controlling COVID-19, might lead to innovative strategies in the medical field, such as developing drugs against SARS-CoV-2, and replacing vaccines, which have negative side effects. This review aims to show the evolution of the COVID-19 pandemic worldwide, specifically in Morocco, its pathophysiology, and its ability to silence the immune system. This review also provides an overview of the treatments and measures applied to protect human beings and how chitosan acts and controls COVID-19.
Collapse
Affiliation(s)
- Youssef Ait Hamdan
- Interdisciplinary Laboratory in Bio-Resources, Environment and Materials, Higher Normal School, Department of Biology, Cadi Ayyad University, 40000 Marrakech, Morocco
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Fatima El Amerany
- Interdisciplinary Laboratory in Bio-Resources, Environment and Materials, Higher Normal School, Department of Biology, Cadi Ayyad University, 40000 Marrakech, Morocco
- Laboratory of Sustainable Development and Health Research, Department of Chemistry, Faculty of Science and Technology of Marrakech, Cadi Ayyad University, PO Box 549, 40000 Marrakech, Morocco
| | - Jacques Desbrières
- IPREM, University of Pau and Adour Countries (UPPA), Hélioparc Pau Pyrénées, 2 Avenue P. Angot, 64053 PAU Cedex 09, France
| | - Abdessadek Aghrinane
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization, Faculty of Sciences, University Chouaib Doukkali, 24000 El Jadida, Morocco
| | | | - Mohammed Rhazi
- Interdisciplinary Laboratory in Bio-Resources, Environment and Materials, Higher Normal School, Department of Biology, Cadi Ayyad University, 40000 Marrakech, Morocco
| |
Collapse
|
3
|
Koop F, Strauß S, Peck CT, Aper T, Wilhelmi M, Hartmann C, Hegermann J, Schipke J, Vogt PM, Bucan V. Preliminary application of native Nephila edulis spider silk and fibrin implant causes granulomatous foreign body reaction in vivo in rat's spinal cord. PLoS One 2022; 17:e0264486. [PMID: 35286342 PMCID: PMC8920256 DOI: 10.1371/journal.pone.0264486] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 02/12/2022] [Indexed: 12/22/2022] Open
Abstract
After spinal cord injury, gliomesenchymal scaring inhibits axonal regeneration as a physical barrier. In peripheral nerve injuries, native spider silk was shown to be an effective scaffold to facilitate axonal re-growth and nerve regeneration. This study tested a two-composite scaffold made of longitudinally oriented native spider silk containing a Haemocomplettan fibrin sheath to bridge lesions in the spinal cord and enhance axonal sprouting. In vitro cultivation of neuronal cells on spider silk and fibrin revealed no cytotoxicity of the scaffold components. When spinal cord tissue was cultured on spider silk that was reeled around a metal frame, migration of different cell types, including neurons and neural stem cells, was observed. The scaffold was implanted into spinal cord lesions of four Wistar rats to evaluate the physical stress caused on the animals and examine the bridging potential for axonal sprouting and spinal cord regeneration. However, the implantation in-vivo resulted in a granulomatous foreign body reaction. Spider silk might be responsible for the strong immune response. Thus, the immune response to native spider silk seems to be stronger in the central nervous system than it is known to be in the peripheral body complicating the application of native spider silk in spinal cord injury treatment.
Collapse
Affiliation(s)
- Felix Koop
- Department of Plastic, Aesthetic, Hand & Reconstructive Surgery, Hannover Medical School, Hannover, Germany
- * E-mail:
| | - Sarah Strauß
- Department of Plastic, Aesthetic, Hand & Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Claas-Tido Peck
- Department of Plastic, Aesthetic, Hand & Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Thomas Aper
- Cardiac, Thoracic, and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Mathias Wilhelmi
- Cardiac, Thoracic, and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Christian Hartmann
- Department of Neuropathology, Hannover Medical School, Hannover, Germany
| | - Jan Hegermann
- Research Core Unit Electron Microscopy and Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
| | - Julia Schipke
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
| | - Peter M. Vogt
- Department of Plastic, Aesthetic, Hand & Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Vesna Bucan
- Department of Plastic, Aesthetic, Hand & Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| |
Collapse
|
4
|
Li XH, Zhu X, Liu XY, Xu HH, Jiang W, Wang JJ, Chen F, Zhang S, Li RX, Chen XY, Tu Y. The corticospinal tract structure of collagen/silk fibroin scaffold implants using 3D printing promotes functional recovery after complete spinal cord transection in rats. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:31. [PMID: 33751254 PMCID: PMC7985105 DOI: 10.1007/s10856-021-06500-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
No effective treatment has been established for nerve dysfunction caused by spinal cord injury (SCI). Orderly axonal growth at the site of spinal cord transection and creation of an appropriate biological microenvironment are important for functional recovery. To axially guiding axonal growth, designing a collagen/silk fibroin scaffold fabricated with 3D printing technology (3D-C/SF) emulated the corticospinal tract. The normal collagen/silk fibroin scaffold with freeze-drying technology (C/SF) or 3D-C/SF scaffold were implanted into rats with completely transected SCI to evaluate its effect on nerve repair during an 8-week observation period. Electrophysiological analysis and locomotor performance showed that the 3D-C/SF implants contributed to significant improvements in the neurogolical function of rats compared to C/SF group. By magnetic resonance imaging, 3D-C/SF implants promoted a striking degree of axonal regeneration and connection between the proximal and distal SCI sites. Compared with C/SF group, rats with 3D-C/SF scaffold exhibited fewer lesions and disordered structures in histological analysis and more GAP43-positive profiles at the lesion site. The above results indicated that the corticospinal tract structure of 3D printing collagen/silk fibroin scaffold improved axonal regeneration and promoted orderly connections within the neural network, which could provided a promising and innovative approach for tissue repair after SCI.
Collapse
Affiliation(s)
- Xiao-Hong Li
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Xiang Zhu
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China
- Henan provincial people's hospital of southeast branch, Zhu ma dian, 463500, China
| | - Xiao-Yin Liu
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China
- Tianjin Medical University, Tianjin, 300070, China
| | - Hai-Huan Xu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China
| | - Wei Jiang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Jing-Jing Wang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China
| | - Feng Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China
| | - Sai Zhang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China
- Emergency Medical Center, Beijing Chaoyang Integrative medicine, Beijing, 100191, China
| | - Rui-Xin Li
- Central Laboratory, Tianjin Stomatological Hospital, Tianjin, 300041, China.
| | - Xu-Yi Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China.
| | - Yue Tu
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin, 300162, China.
- Emergency Medical Center, Beijing Chaoyang Integrative medicine, Beijing, 100191, China.
| |
Collapse
|
5
|
Li JJ, Liu H, Zhu Y, Yan L, Liu R, Wang G, Wang B, Zhao B. Animal Models for Treating Spinal Cord Injury Using Biomaterials-Based Tissue Engineering Strategies. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:79-100. [PMID: 33267667 DOI: 10.1089/ten.teb.2020.0267] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jiao Jiao Li
- School of Biomedical Engineering, Faculty of Engineering and IT, University of Technology Sydney, Ultimo, Australia
| | - Haifeng Liu
- Department of Orthopedics and Shanxi Medical University Second Affiliated Hospital, Taiyuan, China
| | - Yuanyuan Zhu
- Department of Pharmacy, Shanxi Medical University Second Affiliated Hospital, Taiyuan, China
| | - Lei Yan
- Department of Orthopedics and Shanxi Medical University Second Affiliated Hospital, Taiyuan, China
| | - Ruxing Liu
- Department of Orthopedics and Shanxi Medical University Second Affiliated Hospital, Taiyuan, China
| | - Guishan Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, China
| | - Bin Wang
- Department of Orthopedics and Shanxi Medical University Second Affiliated Hospital, Taiyuan, China
- Department of Sports Medicine and Adult Reconstruction Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Bin Zhao
- Department of Orthopedics and Shanxi Medical University Second Affiliated Hospital, Taiyuan, China
| |
Collapse
|
6
|
Roy HS, Singh R, Ghosh D. SARS-CoV-2 and tissue damage: current insights and biomaterial-based therapeutic strategies. Biomater Sci 2021; 9:2804-2824. [PMID: 33666206 DOI: 10.1039/d0bm02077j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The effect of SARS-CoV-2 infection on humanity has gained worldwide attention and importance due to the rapid transmission, lack of treatment options and high mortality rate of the virus. While scientists across the world are searching for vaccines/drugs that can control the spread of the virus and/or reduce the risks associated with infection, patients infected with SARS-CoV-2 have been reported to have tissue/organ damage. With most tissues/organs having limited regenerative potential, interventions that prevent further damage or facilitate healing would be helpful. In the past few decades, biomaterials have gained prominence in the field of tissue engineering, in view of their major role in the regenerative process. Here we describe the effect of SARS-CoV-2 on multiple tissues/organs, and provide evidence for the positive role of biomaterials in aiding tissue repair. These findings are further extrapolated to explore their prospects as a therapeutic platform to address the tissue/organ damage that is frequently observed during this viral outbreak. This study suggests that the biomaterial-based approach could be an effective strategy for regenerating tissues/organs damaged by SARS-CoV-2.
Collapse
Affiliation(s)
- Himadri Shekhar Roy
- Department of Biological Science, Institute of Nanoscience and Technology (INST), Habitat Centre, Sector 64, Phase 10, Mohali-160062, Punjab, India.
| | - Rupali Singh
- Department of Biological Science, Institute of Nanoscience and Technology (INST), Habitat Centre, Sector 64, Phase 10, Mohali-160062, Punjab, India.
| | - Deepa Ghosh
- Department of Biological Science, Institute of Nanoscience and Technology (INST), Habitat Centre, Sector 64, Phase 10, Mohali-160062, Punjab, India.
| |
Collapse
|
7
|
Kornev VA, Grebenik EA, Solovieva AB, Dmitriev RI, Timashev PS. Hydrogel-assisted neuroregeneration approaches towards brain injury therapy: A state-of-the-art review. Comput Struct Biotechnol J 2018; 16:488-502. [PMID: 30455858 PMCID: PMC6232648 DOI: 10.1016/j.csbj.2018.10.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 12/16/2022] Open
Abstract
Recent years have witnessed the development of an enormous variety of hydrogel-based systems for neuroregeneration. Formed from hydrophilic polymers and comprised of up to 90% of water, these three-dimensional networks are promising tools for brain tissue regeneration. They can assist structural and functional restoration of damaged tissues by providing mechanical support and navigating cell fate. Hydrogels also show the potential for brain injury therapy due to their broadly tunable physical, chemical, and biological properties. Hydrogel polymers, which have been extensively implemented in recent brain injury repair studies, include hyaluronic acid, collagen type I, alginate, chitosan, methylcellulose, Matrigel, fibrin, gellan gum, self-assembling peptides and proteins, poly(ethylene glycol), methacrylates, and methacrylamides. When viewed as tools for neuroregeneration, hydrogels can be divided into: (1) hydrogels suitable for brain injury therapy, (2) hydrogels that do not meet basic therapeutic requirements and (3) promising hydrogels which meet the criteria for further investigations. Our analysis shows that fibrin, collagen I and self-assembling peptide-based hydrogels display very attractive properties for neuroregeneration.
Collapse
Affiliation(s)
- Vladimir A. Kornev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
| | - Ekaterina A. Grebenik
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
| | - Anna B. Solovieva
- N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina st., Moscow 117977, Russian Federation
| | - Ruslan I. Dmitriev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
| | - Peter S. Timashev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
- N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina st., Moscow 117977, Russian Federation
- Institute of Photonic Technologies, Research Center “Crystallography and Photonics” Russian Academy of Sciences, 2 Pionerskaya st., Troitsk, Moscow 108840, Russian Federation
| |
Collapse
|
8
|
Nune M, Manchineella S, T G, K S N. Melanin incorporated electroactive and antioxidant silk fibroin nanofibrous scaffolds for nerve tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:17-25. [PMID: 30423699 DOI: 10.1016/j.msec.2018.09.014] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 08/27/2018] [Accepted: 09/05/2018] [Indexed: 02/03/2023]
Abstract
Nerve restoration and repair in the central nervous system is complicated and requires several factors to be considered while designing the scaffolds like being bioactive as well as having neuroinductive, neuroconductive and antioxidant properties. Aligned electrospun nanofibers provide necessary guidance and topographical cues required for directing the axonal and neurite outgrowth during regeneration. Conduction of nerve impulses is a mandatory feature of a typical nerve. The neuro-conductive property can be imparted by blending the biodegradable, bioactive polymers with conductive polymers. This will provide additional features, i.e., electrical cues to the already existing topographical and bioactive cues in order to make it a more multifaceted neuroregenerative approach. Hence in the present study, we used a combination of silk fibroin and melanin for the fabrication of random and aligned electrospun nanofibrous composite scaffolds. We performed the physico-chemical characterization and also assessed their antioxidant properties. We also evaluated their neurogenic potential using human neuroblastoma cells (SH-SY5Y) for their cellular viability, proliferation, adhesion and differentiation levels. Designed nanofibrous scaffolds had adequate physical properties suitable as neural substrates to promote neuronal growth and regeneration. They stimulated the neuroblastoma cell attachment and viability indicating their biocompatible nature. Silk/melanin composite scaffolds have specifically exhibited high antioxidant nature proven by the radical scavenging activity. Additionally, the melanin incorporated aligned silk fibroin scaffolds promoted the cell differentiation into neurons and orientation along their axis. Our results confirmed the potential of melanin incorporated aligned silk fibroin scaffolds as the promising candidates for effective nerve regeneration and recovery.
Collapse
Affiliation(s)
- Manasa Nune
- Chemistry and Physics of Materials Unit School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Shivaprasad Manchineella
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Govindaraju T
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Narayan K S
- School of Advanced Materials and Department of Neurosciences, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India.
| |
Collapse
|
9
|
Synthesis and Characterization of a Laminated Hydroxyapatite/Gelatin Nanocomposite Scaffold with Controlled Pore Structure for Bone Tissue Engineering. Int J Artif Organs 2018. [DOI: 10.1177/039139881003300204] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this study, a nanostructured scaffold was designed for bone repair using hydroxyapatite (HA) and gelatin (GEL) as its main components. Nanopowders of HA were synthesized, and together with GEL, used to engineer a 3-dimensional nanocomposite combining 3 techniques of layer solvent casting, freeze-drying, and lamination. The results show that the scaffold possesses a 3-dimensional interconnected homogenous porous structure with a porosity of 82% and pore sizes ranging from 300 to 500 μm. It has also been shown that mechanical indices are in the range of spongy bones. Cultured osteoblast-like cells (SaOS-2) have shown an excellent level of cell attachment, migration, and penetration into the porosities of the nanocomposite scaffold. Here, we have shown that by a combination of widely available methods with simple experimental operations, nano-HA powders can be synthesized and used to make 3-dimensional HA/GEL nanocomposites in any desired shape, with mechanical properties comparable to spongy bone.
Collapse
|
10
|
Platelet-rich plasma-derived scaffolds increase the benefit of delayed mesenchymal stromal cell therapy after severe traumatic brain injury. Cytotherapy 2018; 20:314-321. [PMID: 29306567 DOI: 10.1016/j.jcyt.2017.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 09/11/2017] [Accepted: 11/30/2017] [Indexed: 12/28/2022]
Abstract
BACKGROUND Cell therapy using mesenchymal stromal cells (MSCs) offers new perspectives in the treatment of traumatic brain injury (TBI). The aim of the present study was to assess the impact of platelet-rich plasma scaffolds (PRPS) as support of MSCs in a delayed phase after severe TBI in rats. METHODS TBI was produced by weight-drop impact to the right cerebral hemisphere. Two months after TBI, four experimental groups were established; saline, PRPS, MSCs in saline, or MSCs in PRPS was transplanted into the area of brain lesion through a small hole. All groups were evaluated in the course of the following 12 months after therapy and the animals were then humanely killed. RESULTS Our results showed that a greater functional improvement was obtained after the administration of MSCs in PRPS compared with the other experimental groups. DISCUSSION PRPS enhanced the benefit of cell therapy with MSCs to treat chronic brain damage in rats that suffered a severe TBI. The present findings suggest that the use of intralesional MSCs supported in PRPS may be a strategy of tissue engineering for patients with established neurological severe dysfunction after a TBI.
Collapse
|
11
|
Quan Q, Chang B, Meng HY, Liu RX, Wang Y, Lu SB, Peng J, Zhao Q. Use of electrospinning to construct biomaterials for peripheral nerve regeneration. Rev Neurosci 2016; 27:761-768. [PMID: 27428846 DOI: 10.1515/revneuro-2016-0032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 05/26/2016] [Indexed: 12/16/2022]
Abstract
AbstractA number of limitations associated with the use of hollow nerve guidance conduits (NGCs) require further discussion. Most importantly, the functional recovery outcomes after the placement of hollow NGCs are poor even after the successful bridging of peripheral nerve injuries. However, nerve regeneration scaffolds built using electric spinning have several advantages that may improve functional recovery. Thus, the present study summarizes recent developments in this area, including the key cells that are combined with the scaffold and associated with nerve regeneration, the structure and configuration of the electrospinning design (which determines the performance of the electrospinning scaffold), the materials the electrospinning fibers are composed of, and the methods used to control the morphology of a single fiber. Additionally, this study also discusses the processes underlying peripheral nerve regeneration. The primary goals of the present review were to evaluate and consolidate the findings of studies that used scaffolding biomaterials built by electrospinning used for peripheral nerve regeneration support. It is amazing that the field of peripheral nerve regeneration continues to consistently produce such a wide variety of innovative techniques and novel types of equipment, because the introduction of every new process creates an opportunity for advances in materials for nerve repair.
Collapse
|
12
|
Impellizzeri D, Ahmad A, Di Paola R, Campolo M, Navarra M, Esposito E, Cuzzocrea S. Role of Toll like receptor 4 signaling pathway in the secondary damage induced by experimental spinal cord injury. Immunobiology 2015; 220:1039-49. [DOI: 10.1016/j.imbio.2015.05.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/17/2015] [Accepted: 05/01/2015] [Indexed: 12/31/2022]
|
13
|
Abstract
UNLABELLED The efficacy of olfactory mucosa autograft (OMA) for chronic spinal cord injury has been reported. New activity in response to voluntary effort has been documented by electromyography (EMG), but the emergence of motor evoked potential (MEP) reflecting electrophysiological conductivity in the central nervous system, including the corticospinal pathway after OMA has not been clarified. We report the emergence of MEPs after OMA. METHODS Four patients, 3 men and 1 woman, were enrolled. The mean age of the cases was 30.3 ± 9.5 years (range, 19 to 40 years). All 4 cases were American Spinal Injury Association (ASISA) grade A. The mean duration from injury to OMA was 95. 8 ± 68.2 months (range, 17 to 300 months). Samples of olfactory mucosa were removed, cut into smaller pieces, and grafted into the sites of spinal cord lesions after laminectomy. Improvements in ASIA grade, variations in ASIA scores, EMG, SSEP, and improved urological function were evaluated as efficacy indicators. RESULTS There were no serious adverse events in this series. In 2 of the 4 cases, an improvement in motor function below the level of injury was recognized. The emergence of MEP was recognized in the latter case at 96 weeks after surgery.
Collapse
|
14
|
Integration of donor mesenchymal stem cell-derived neuron-like cells into host neural network after rat spinal cord transection. Biomaterials 2015; 53:184-201. [DOI: 10.1016/j.biomaterials.2015.02.073] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 02/08/2015] [Accepted: 02/15/2015] [Indexed: 12/27/2022]
|
15
|
Hydrogels and Cell Based Therapies in Spinal Cord Injury Regeneration. Stem Cells Int 2015; 2015:948040. [PMID: 26124844 PMCID: PMC4466497 DOI: 10.1155/2015/948040] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 12/14/2014] [Indexed: 01/01/2023] Open
Abstract
Spinal cord injury (SCI) is a central nervous system- (CNS-) related disorder for which there is yet no successful treatment. Within the past several years, cell-based therapies have been explored for SCI repair, including the use of pluripotent human stem cells, and a number of adult-derived stem and mature cells such as mesenchymal stem cells, olfactory ensheathing cells, and Schwann cells. Although promising, cell transplantation is often overturned by the poor cell survival in the treatment of spinal cord injuries. Alternatively, the therapeutic role of different cells has been used in tissue engineering approaches by engrafting cells with biomaterials. The latter have the advantages of physically mimicking the CNS tissue, while promoting a more permissive environment for cell survival, growth, and differentiation. The roles of both cell- and biomaterial-based therapies as single therapeutic approaches for SCI repair will be discussed in this review. Moreover, as the multifactorial inhibitory environment of a SCI suggests that combinatorial approaches would be more effective, the importance of using biomaterials as cell carriers will be herein highlighted, as well as the recent advances and achievements of these promising tools for neural tissue regeneration.
Collapse
|
16
|
Vishwakarma SK, Bardia A, Tiwari SK, Paspala SA, Khan AA. Current concept in neural regeneration research: NSCs isolation, characterization and transplantation in various neurodegenerative diseases and stroke: A review. J Adv Res 2014; 5:277-94. [PMID: 25685495 PMCID: PMC4294738 DOI: 10.1016/j.jare.2013.04.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 04/10/2013] [Accepted: 04/28/2013] [Indexed: 12/14/2022] Open
Abstract
Since last few years, an impressive amount of data has been generated regarding the basic in vitro and in vivo biology of neural stem cells (NSCs) and there is much far hope for the success in cell replacement therapies for several human neurodegenerative diseases and stroke. The discovery of adult neurogenesis (the endogenous production of new neurons) in the mammalian brain more than 40 years ago has resulted in a wealth of knowledge about stem cells biology in neuroscience research. Various studies have done in search of a suitable source for NSCs which could be used in animal models to understand the basic and transplantation biology before treating to human. The difficulties in isolating pure population of NSCs limit the study of neural stem behavior and factors that regulate them. Several studies on human fetal brain and spinal cord derived NSCs in animal models have shown some interesting results for cell replacement therapies in many neurodegenerative diseases and stroke models. Also the methods and conditions used for in vitro culture of these cells provide an important base for their applicability and specificity in a definite target of the disease. Various important developments and modifications have been made in stem cells research which is needed to be more specified and enrolment in clinical studies using advanced approaches. This review explains about the current perspectives and suitable sources for NSCs isolation, characterization, in vitro proliferation and their use in cell replacement therapies for the treatment of various neurodegenerative diseases and strokes.
Collapse
Affiliation(s)
- Sandeep K. Vishwakarma
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
- Paspala Advanced Neural (PAN) Research Foundation, Narayanguda, Hyderabad, 500 029 Andhra Pradesh, India
| | - Avinash Bardia
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
| | - Santosh K. Tiwari
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
| | - Syed A.B. Paspala
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
- Paspala Advanced Neural (PAN) Research Foundation, Narayanguda, Hyderabad, 500 029 Andhra Pradesh, India
| | - Aleem A. Khan
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
- Paspala Advanced Neural (PAN) Research Foundation, Narayanguda, Hyderabad, 500 029 Andhra Pradesh, India
| |
Collapse
|
17
|
Kumar P, Choonara YE, Modi G, Naidoo D, Pillay V. Nanoparticulate strategies for the five R’s of traumatic spinal cord injury intervention: restriction, repair, regeneration, restoration and reorganization. Nanomedicine (Lond) 2014; 9:331-48. [DOI: 10.2217/nnm.13.203] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanomedicinal approaches for spinal cord injury (SCI) intervention encompasses the use of nanoscale materials and devices that prevent primary to secondary injury transition and improvement in the anatomical, physiological and functional outcomes of SCI. This review provides an incursion into the advances in nanoparticle-based neurotherapeutics for SCI and focuses on neuroactive-loaded nanoparticles for localized delivery of therapeutic factors to the severed spinal cord, targeted or nontargeted systemic drug delivery and nanoenclatherated neuroscaffolds. Special emphasis has been placed on the use of metal nanoparticles and functionalized structures as ‘drug-free’ interventions in SCI. Despite the immense advancements in nanoscience, nanointerventions still pose key challenges that need to be resolved in SCI. Several combinatorial strategies are proposed for the reconstruction of spinal architecture via restriction of the secondary injury cascade, reparation of the tethered neural architecture, regeneration of axons, restoration of biochemical functions and reorganization of the topographical and cortical networks of the spinal cord.
Collapse
Affiliation(s)
- Pradeep Kumar
- University of the Witwatersrand, Faculty of Health Sciences, Department of Pharmacy & Pharmacology, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - Yahya E Choonara
- University of the Witwatersrand, Faculty of Health Sciences, Department of Pharmacy & Pharmacology, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - Girish Modi
- University of the Witwatersrand, Faculty of Health Sciences, Department of Neurology, Division of Neurosciences, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - Dinesh Naidoo
- University of the Witwatersrand, Faculty of Health Sciences, Department of Neurosurgery, Division of Neurosciences, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - Viness Pillay
- University of the Witwatersrand, Faculty of Health Sciences, Department of Pharmacy & Pharmacology, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| |
Collapse
|
18
|
Amr SM, Gouda A, Koptan WT, Galal AA, Abdel-Fattah DS, Rashed LA, Atta HM, Abdel-Aziz MT. Bridging defects in chronic spinal cord injury using peripheral nerve grafts combined with a chitosan-laminin scaffold and enhancing regeneration through them by co-transplantation with bone-marrow-derived mesenchymal stem cells: case series of 14 patients. J Spinal Cord Med 2014; 37:54-71. [PMID: 24090088 PMCID: PMC4066552 DOI: 10.1179/2045772312y.0000000069] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE To investigate the effect of bridging defects in chronic spinal cord injury using peripheral nerve grafts combined with a chitosan-laminin scaffold and enhancing regeneration through them by co-transplantation with bone-marrow-derived mesenchymal stem cells. METHODS In 14 patients with chronic paraplegia caused by spinal cord injury, cord defects were grafted and stem cells injected into the whole construct and contained using a chitosan-laminin paste. Patients were evaluated using the International Standards for Classification of Spinal Cord Injuries. RESULTS Chitosan disintegration leading to post-operative seroma formation was a complication. Motor level improved four levels in 2 cases and two levels in 12 cases. Sensory-level improved six levels in two cases, five levels in five cases, four levels in three cases, and three levels in four cases. A four-level neurological improvement was recorded in 2 cases and a two-level neurological improvement occurred in 12 cases. The American Spinal Impairment Association (ASIA) impairment scale improved from A to C in 12 cases and from A to B in 2 cases. Although motor power improvement was recorded in the abdominal muscles (2 grades), hip flexors (3 grades), hip adductors (3 grades), knee extensors (2-3 grades), ankle dorsiflexors (1-2 grades), long toe extensors (1-2 grades), and plantar flexors (0-2 grades), this improvement was too low to enable them to stand erect and hold their knees extended while walking unaided. CONCLUSION Mesenchymal stem cell-derived neural stem cell-like cell transplantation enhances recovery in chronic spinal cord injuries with defects bridged by sural nerve grafts combined with a chitosan-laminin scaffold.
Collapse
Affiliation(s)
- Sherif M. Amr
- Department of Orthopaedics and Traumatology, Cairo University, Cairo, Egypt
| | - Ashraf Gouda
- Department of Orthopaedics and Traumatology, Al-Helal Hospital, Cairo, Egypt
| | - Wael T. Koptan
- Department of Orthopaedics and Traumatology, Cairo University, Cairo, Egypt
| | - Ahmad A. Galal
- Department of Orthopaedics and Traumatology, Cairo University, Cairo, Egypt
| | | | - Laila A. Rashed
- Department of Biochemistry and Molecular Biology, Cairo University, Cairo, Egypt
| | - Hazem M. Atta
- Department of Biochemistry and Molecular Biology, Cairo University, Cairo, Egypt
| | | |
Collapse
|
19
|
Combined treatment with platelet-rich plasma and brain-derived neurotrophic factor-overexpressing bone marrow stromal cells supports axonal remyelination in a rat spinal cord hemi-section model. Cytotherapy 2013; 15:792-804. [PMID: 23731762 DOI: 10.1016/j.jcyt.2013.04.004] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 03/24/2013] [Accepted: 04/07/2013] [Indexed: 11/21/2022]
Abstract
BACKGROUND AIMS Combining biologic matrices is becoming a better choice to advance stem cell-based therapies. Platelet-rich plasma (PRP) is a biologic product of concentrated platelets and has been used to promote regeneration of peripheral nerves after injury. We examined whether PRP could induce rat bone marrow stromal cells (BMSCs) differentiation in vitro and whether a combination of BMSCs, PRP and brain-derived neurotrophic factor (BDNF) could provide additive therapeutic benefits in vivo after spinal cord injury (SCI). METHODS BMSCs and BDNF-secreting BMSCs (BDNF-BMSCs) were cultured with PRP for 7 days and 21 days, respectively, and neurofilament (NF)-200, glial fibrillary acidic protein (GFAP), microtubule-associated protein 2 (MAP2) and ribosomal protein S6 kinase (p70S6K) gene levels were assessed. After T10 hemi-section in 102 rats, 15-μL scaffolds (PRP alone, BMSCs, PRP/BMSCs, BDNF-BMSCs or PRP/BDNF-BMSCs) were transplanted into the lesion area, and real-time polymerase chain reaction, Western blot, immunohistochemistry and ultrastructural studies were performed. RESULTS The messenger RNA expression of NF-200, GFAP, MAP2 and p70S6K was promoted in BMSCs and BDNF-BMSCs after culture with PRP in vitro. BDNF levels were significantly higher in the injured spinal cord after implantation of BDNF-BMSCs. In the PRP/BDNF-BMSCs group at 8 weeks postoperatively, more GFAP was observed, with less accumulation of astrocytes at the graft-host interface. Rats that received PRP and BDNF-BMSC implants showed enhanced hind limb locomotor performance at 8 weeks postoperatively compared with control animals, with more axonal remyelination. CONCLUSIONS A combined treatment comprising PRP and BDNF-overexpressing BMSCs produced beneficial effects in rats with regard to functional recovery after SCI through enhancing migration of astrocytes into the transplants and axonal remyelination.
Collapse
|
20
|
Silva NA, Sousa N, Reis RL, Salgado AJ. From basics to clinical: a comprehensive review on spinal cord injury. Prog Neurobiol 2013; 114:25-57. [PMID: 24269804 DOI: 10.1016/j.pneurobio.2013.11.002] [Citation(s) in RCA: 509] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 11/12/2013] [Accepted: 11/12/2013] [Indexed: 12/15/2022]
Abstract
Spinal cord injury (SCI) is a devastating neurological disorder that affects thousands of individuals each year. Over the past decades an enormous progress has been made in our understanding of the molecular and cellular events generated by SCI, providing insights into crucial mechanisms that contribute to tissue damage and regenerative failure of injured neurons. Current treatment options for SCI include the use of high dose methylprednisolone, surgical interventions to stabilize and decompress the spinal cord, and rehabilitative care. Nonetheless, SCI is still a harmful condition for which there is yet no cure. Cellular, molecular, rehabilitative training and combinatorial therapies have shown promising results in animal models. Nevertheless, work remains to be done to ascertain whether any of these therapies can safely improve patient's condition after human SCI. This review provides an extensive overview of SCI research, as well as its clinical component. It starts covering areas from physiology and anatomy of the spinal cord, neuropathology of the SCI, current clinical options, neuronal plasticity after SCI, animal models and techniques to assess recovery, focusing the subsequent discussion on a variety of promising neuroprotective, cell-based and combinatorial therapeutic approaches that have recently moved, or are close, to clinical testing.
Collapse
Affiliation(s)
- Nuno A Silva
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal; 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Caldas das Taipas, Guimarães, Portugal
| | - António J Salgado
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| |
Collapse
|
21
|
Ribeiro-Samy S, Silva NA, Correlo VM, Fraga JS, Pinto L, Teixeira-Castro A, Leite-Almeida H, Almeida A, Gimble JM, Sousa N, Salgado AJ, Reis RL. Development and Characterization of a PHB-HV-based 3D Scaffold for a Tissue Engineering and Cell-therapy Combinatorial Approach for Spinal Cord Injury Regeneration. Macromol Biosci 2013; 13:1576-92. [DOI: 10.1002/mabi.201300178] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 06/26/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Silvina Ribeiro-Samy
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Nuno A. Silva
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Vitor M. Correlo
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Joana S. Fraga
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Luísa Pinto
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Andreia Teixeira-Castro
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Hugo Leite-Almeida
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Armando Almeida
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Jeffrey M. Gimble
- Pennington Biomedical Research Center; Louisiana State University System; Baton Rouge Louisiana USA
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - António J. Salgado
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| |
Collapse
|
22
|
Gnavi S, Barwig C, Freier T, Haastert-Talini K, Grothe C, Geuna S. The use of chitosan-based scaffolds to enhance regeneration in the nervous system. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2013; 109:1-62. [PMID: 24093605 DOI: 10.1016/b978-0-12-420045-6.00001-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Various biomaterials have been proposed to build up scaffolds for promoting neural repair. Among them, chitosan, a derivative of chitin, has been raising more and more interest among basic and clinical scientists. A number of studies with neuronal and glial cell cultures have shown that this biomaterial has biomimetic properties, which make it a good candidate for developing innovative devices for neural repair. Yet, in vivo experimental studies have shown that chitosan can be successfully used to create scaffolds that promote regeneration both in the central and in the peripheral nervous system. In this review, the relevant literature on the use of chitosan in the nervous tissue, either alone or in combination with other components, is overviewed. Altogether, the promising in vitro and in vivo experimental results make it possible to foresee that time for clinical trials with chitosan-based nerve regeneration-promoting devices is approaching quickly.
Collapse
Affiliation(s)
- Sara Gnavi
- Department of Clinical and Biological Sciences, Neuroscience Institute of the Cavalieri Ottolenghi Foundation (NICO), University of Turin, Ospedale San Luigi, Regione Gonzole 10, Orbassano (TO), Italy
| | | | | | | | | | | |
Collapse
|
23
|
Azami M, Tavakol S, Samadikuchaksaraei A, Hashjin MS, Baheiraei N, Kamali M, Nourani MR. A Porous Hydroxyapatite/Gelatin Nanocomposite Scaffold for Bone Tissue Repair:
In Vitro
and
In Vivo
Evaluation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:2353-68. [DOI: 10.1163/156856211x617713] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Mahmoud Azami
- a Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
- b Biomaterials Group, Faculty of Biomedical Engineering, Amirkabir University of Technology , Tehran , Iran
- c Department of Tissue Engineering , School of Advanced Medical Technologies, Tehran University of Medical Sciences , 1417755469 , Tehran , Iran
| | - Shima Tavakol
- c Department of Tissue Engineering , School of Advanced Medical Technologies, Tehran University of Medical Sciences , 1417755469 , Tehran , Iran
| | - Ali Samadikuchaksaraei
- d Cellular and Molecular Research Center, Department of Biotechnology , Tehran University of Medical Sciences , Tehran , Iran
| | - Mehran Solati Hashjin
- b Biomaterials Group, Faculty of Biomedical Engineering, Amirkabir University of Technology , Tehran , Iran
| | - Nafiseh Baheiraei
- b Biomaterials Group, Faculty of Biomedical Engineering, Amirkabir University of Technology , Tehran , Iran
| | - Mehdi Kamali
- a Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Mohammad Reza Nourani
- e Chemical Injury Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| |
Collapse
|
24
|
Esposito E, Rinaldi B, Mazzon E, Donniacuo M, Impellizzeri D, Paterniti I, Capuano A, Bramanti P, Cuzzocrea S. Anti-inflammatory effect of simvastatin in an experimental model of spinal cord trauma: involvement of PPAR-α. J Neuroinflammation 2012; 9:81. [PMID: 22537532 PMCID: PMC3372420 DOI: 10.1186/1742-2094-9-81] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 04/26/2012] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Statins such as simvastatin are inhibitors of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase used in the prevention of cardiovascular disease. In addition to their cholesterol-lowering activities, statins exert pleiotropic anti-inflammatory effects, which might contribute to their beneficial effects on lipid-unrelated inflammatory diseases. Recently it has been demonstrated that the peroxisome proliferator-activated receptor (PPAR)-α mediates anti-inflammatory effects of simvastatin in vivo models of acute inflammation. Moreover, previous results suggest that PPAR-α plays a role in control of secondary inflammatory process associated with spinal cord injury (SCI). METHODS With the aim to characterize the role of PPAR-α in simvastatin activity, we tested the efficacy of simvastatin (10 mg/kg dissolved in saline i.p. 1 h and 6 h after the trauma) in an experimental model of SCI induced in mice by extradural compression of the spinal cord (T6-T7 level) using an aneurysm clip with a closing force of 24 g via a four-level T5-T8 laminectomy, and comparing mice lacking PPAR-α (PPAR-α KO) with wild type (WT) mice. In order to elucidate whether the effects of simvastatin are due to activation of the PPAR-α, we also investigated the effect of a PPAR-α antagonist, GW6471 (1 mg/kg administered i.p. 30 min prior treatment with simvastatin) on the protective effects of on simvastatin. RESULTS Results indicate that simvastatin activity is weakened in PPAR-α KO mice, as compared to WT controls. In particular, simvastatin was less effective in PPAR-α KO, compared to WT mice, as evaluated by inhibition of the degree of spinal cord inflammation, neutrophil infiltration, nitrotyrosine formation, pro-inflammmatory cytokine expression, nuclear factor (NF)-κB activation, inducible nitric-oxide synthase (iNOS) expression, and apoptosis. In addition we demonstrated that GW6471 significantly antagonized the effect of the statin and thus abolished the protective effect. CONCLUSIONS This study indicates that PPAR-α can contribute to the anti-inflammatory activity of simvastatin in SCI.
Collapse
Affiliation(s)
- Emanuela Esposito
- Department of Clinical and Experimental Medicine and Pharmacology, School of Medicine, University of Messina, 98125 Messina, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Kang KN, Kim DY, Yoon SM, Lee JY, Lee BN, Kwon JS, Seo HW, Lee IW, Shin HC, Kim YM, Kim HS, Kim JH, Min BH, Lee HB, Kim MS. Tissue engineered regeneration of completely transected spinal cord using human mesenchymal stem cells. Biomaterials 2012; 33:4828-35. [PMID: 22498301 DOI: 10.1016/j.biomaterials.2012.03.043] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 03/13/2012] [Indexed: 12/18/2022]
Abstract
The present study employed a combinatorial strategy using poly(D,L-lactide-co-glycolide) (PLGA) scaffolds seeded with human mesenchymal stem cells (hMSCs) to promote cell survival, differentiation, and neurological function in a completely transected spinal cord injury (SCI) model. The SCI model was prepared by complete removal of a 2-mm length of spinal cord in the eighth-to-ninth spinal vertebra, a procedure that resulted in bilateral hindlimb paralysis. PLGA scaffolds 2 mm in length without hMSCs (control) or with different numbers of hMSCs (1 × 10(5), 2 × 10(4), and 4 × 10(3)) were fitted into the completely transected spinal cord. Rats implanted with hMSCs received Basso-Beattie-Bresnahan scores for hindlimb locomotion of about 5, compared with ~2 for animals in the control group. The amplitude of motor-evoked potentials (MEPs) averaged 200-300 μV in all hMSC-implanted SCR model rats. In contrast, the amplitude of MEPs in control group animals averaged 135 μV at 4 weeks and then declined to 100 μV at 8 weeks. These results demonstrate functional recovery in a completely transected SCI model under conditions that exclude self-recovery. hMSCs were detected at the implanted site 4 and 8 weeks after transplantation, indicating in vivo survival of implanted hMSCs. Immunohistochemical staining revealed differentiation of implanted hMSCs into nerve cells, and immunostained images showed clear evidence for axonal regeneration only in hMSC-seeded PLGA scaffolds. Collectively, our results indicate that hMSC-seeded PLGA scaffolds induced nerve regeneration in a completely transected SCI model, a finding that should have significant implications for the feasibility of therapeutic and clinical hMSC-delivery using three-dimensional scaffolds, especially in the context of complete spinal cord transection.
Collapse
Affiliation(s)
- Kkot Nim Kang
- Department of Molecular Science and Technology, Ajou University, Suwon 443-749, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Wilcox JT, Cadotte D, Fehlings MG. Spinal cord clinical trials and the role for bioengineering. Neurosci Lett 2012; 519:93-102. [PMID: 22366402 DOI: 10.1016/j.neulet.2012.02.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Accepted: 02/08/2012] [Indexed: 12/31/2022]
Abstract
There is considerable need for bringing effective therapies for spinal cord injury (SCI) to the clinic. Excellent medical and surgical management has mitigated poor prognoses after SCI; however, few advances have been made to return lost function. Bioengineering approaches have shown great promise in preclinical rodent models, yet there remains a large translational gap to carry these forward in human trials. Herein, we provide a framework of human clinical trials, an overview of past trials for SCI, as well as bioengineered approaches that include: directly applied pharmacologics, cellular transplantation, biomaterials and functional neurorehabilitation. Success of novel therapies will require the correct application of comprehensive preclinical studies with well-designed and expertly conducted human clinical trials. While biologics and bioengineered strategies are widely considered to represent the high potential benefits for those who have sustained a spinal injury, few such therapies have been thoroughly tested with appreciable efficacy for use in human SCI. With these considerations, we propose that bioengineered strategies are poised to enter clinical trials.
Collapse
Affiliation(s)
- Jared T Wilcox
- Institute of Medical Science, University of Toronto, Toronto, Canada M5S 1A8
| | | | | |
Collapse
|
27
|
Abstract
Spinal cord injury (SCI) presents a complex regenerative problem due to the multiple facets of growth inhibition that occur following trauma to the cord parenchyma and stroma. Clinically, SCI is further complicated by the heterogeneity in the size, shape and extent of human injuries. Many of these injuries do not breach the dura mater and have continuous viable axons through the injury site that can later lead to some degree of functional recovery. In these cases, surgical manipulation of the spinal cord by implanting a preformed scaffold or drug delivery device may lead to further damage. Given these circumstances, in situ-forming scaffolds are an attractive approach for SCI regeneration. These synthetic and natural polymers undergo a rapid transformation from liquid to gel upon injection into the cord tissue, conforming to the individual lesion site and directly integrating with the host tissue. Injectable materials can be formulated to have mechanical properties that closely match the native spinal cord extracellular matrix, and this may enhance axonal ingrowth. Such materials can also be loaded with cellular and molecular therapeutics to modulate the wound environment and enhance regeneration. This review will focus on the current status of in situ-forming materials for spinal cord repair. The advantages of, and requirements for, such polymers will be presented, and examples of the behavior of such systems in vitro and in vivo will be presented. There are helpful lessons to be learned from the investigations of injectable hydrogels for the treatment of SCI that apply to the use of these biomaterials for the treatment of lesions in other central nervous system tissues and in organs comprising other tissue types.
Collapse
Affiliation(s)
- D Macaya
- Tissue Engineering, VA Boston Healthcare System, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | |
Collapse
|
28
|
Strategies for Endogenous Spinal Cord Repair: HPMA Hydrogel to Recruit Migrating Endogenous Stem Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 760:25-52. [DOI: 10.1007/978-1-4614-4090-1_3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
29
|
McMahon SS, Nikolskaya N, Choileáin SN, Hennessy N, O'Brien T, Strappe PM, Gorelov A, Rochev Y. Thermosensitive hydrogel for prolonged delivery of lentiviral vector expressing neurotrophin-3 in vitro. J Gene Med 2011; 13:591-601. [DOI: 10.1002/jgm.1613] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Siobhan S McMahon
- Discipline of Anatomy; National University of Ireland; Galway; Ireland
| | - Natalia Nikolskaya
- National Centre for Biomedical Engineering Science; National University of Ireland; Galway; Ireland
| | - Siobhan Ní Choileáin
- National Centre for Biomedical Engineering Science; National University of Ireland; Galway; Ireland
| | - Niamh Hennessy
- National Centre for Biomedical Engineering Science; National University of Ireland; Galway; Ireland
| | - Timothy O'Brien
- Regenerative Medicine Institute; National University of Ireland; Galway; Ireland
| | - Padraig M Strappe
- School of Biomedical Sciences; Charles Sturt University; Wagga Wagga; NSW; Australia
| | - Alexander Gorelov
- School of Chemistry & Chemical Biology; University College Dublin; Ireland
| | - Yury Rochev
- National Centre for Biomedical Engineering Science; National University of Ireland; Galway; Ireland
| |
Collapse
|
30
|
Simpson DL, Dudley SC. Modulation of human mesenchymal stem cell function in a three-dimensional matrix promotes attenuation of adverse remodelling after myocardial infarction. J Tissue Eng Regen Med 2011; 7:192-202. [PMID: 22095744 DOI: 10.1002/term.511] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 06/01/2011] [Accepted: 07/26/2011] [Indexed: 12/31/2022]
Abstract
The application of tissue engineering (TE) practices for cell delivery offers a unique approach to cellular cardiomyoplasty. We hypothesized that human mesenchymal stem cells (hMSCs) applied to the heart in a collagen matrix would outperform the same cells grown in a monolayer and directly injected for cardiac cell replacement after myocardial infarction in a rat model. When hMSC patches were transplanted to infarcted hearts, several measures for left ventricle (LV) remodelling and function were improved, including fractional area change, wall thickness, -dP/dt and LV end-diastolic pressure. Neovessel formation throughout the LV infarct wall after hMSC patch treatment increased by 37% when compared to direct injection of hMSCs. This observation was correlated with increased secretion of angiogenic factors, with accompanying evidence that these factors enhanced vessel formation (30% increase) and endothelial cell growth (48% increase) in vitro. These observations may explain the in vivo observations of increased vessel formation and improved cardiac function with patch-mediated cell delivery. Although culture of hMSC in collagen patches enhanced angiogenic responses, there was no effect on cell potency or viability. Therefore, hMSCs delivered as a cardiac patch showed benefits above those derived from monolayers and directly injected. hMSCs cultured and delivered within TE constructs may represent a good option to maximize the effects of cellular cardiomyoplasty.
Collapse
|
31
|
Kim H, Tator CH, Shoichet MS. Chitosan implants in the rat spinal cord: Biocompatibility and biodegradation. J Biomed Mater Res A 2011; 97:395-404. [DOI: 10.1002/jbm.a.33070] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 01/18/2011] [Accepted: 01/24/2011] [Indexed: 02/02/2023]
|
32
|
Wang M, Zhai P, Chen X, Schreyer DJ, Sun X, Cui F. Bioengineered scaffolds for spinal cord repair. TISSUE ENGINEERING PART B-REVIEWS 2011; 17:177-94. [PMID: 21338266 DOI: 10.1089/ten.teb.2010.0648] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Spinal cord injury can lead to devastating and permanent loss of neurological function, affecting all levels below the site of trauma. Unfortunately, the injured adult mammalian spinal cord displays little regenerative capacity and little functional recovery in large part due to a tissue environment that is nonpermissive for regenerative axon growth. Artificial tissue repair scaffolds may provide a physical guide to allow regenerative axon growth that bridges the lesion cavity and restores functional neural connectivity. By integrating different strategies, including the use of various biomaterials and microstructures as well as incorporation of bioactive molecules and living cells, combined or synergistic effects for spinal cord repair through regenerative axon growth may be achieved. This article briefly reviews the development of bioengineered scaffolds for spinal cord repair, focusing on spinal cord injury and the subsequent cellular response, scaffold materials, fabrication techniques, and current therapeutic strategies. Key issues and challenges are also identified and discussed along with recommendations for future research.
Collapse
Affiliation(s)
- Mindan Wang
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | | | | | | | | | | |
Collapse
|
33
|
Zurita M, Otero L, Aguayo C, Bonilla C, Ferreira E, Parajón A, Vaquero J. Cell therapy for spinal cord repair: optimization of biologic scaffolds for survival and neural differentiation of human bone marrow stromal cells. Cytotherapy 2011; 12:522-37. [PMID: 20465485 DOI: 10.3109/14653241003615164] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND AIMS The suppression of cell apoptosis using a biodegradable scaffold to replace the missing or altered extracellular matrix (ECM) could increase the survival of transplanted cells and thus increase the effectiveness of cell therapy. METHODS We studied the best conditions for the proliferation and differentiation of human bone marrow stromal cells (hBMSC) when cultured on different biologic scaffolds derived from fibrin and blood plasma, and analyzed the best concentrations of fibrinogen, thrombin and calcium chloride for favoring cell survival. The induction of neural differentiation of hBMSC was done by adding to these scaffolds different growth factors, such as nerve growth factor (NGF), brain-derived-neurotrophic factor (BDNF) and retinoic acid (RA), at concentrations of 100 ng/mL (NGF and BDNF) and 1 micro/mL (RA), over 7 days. RESULTS Although both types of scaffold allowed survival and neural differentiation of hBMSC, the results showed a clear superiority of platelet-rich plasma (PRP) scaffolds, mainly after BDNF administration, allowing most of the hBMSC to survive and differentiate into a neural phenotype. CONCLUSIONS Given that clinical trials for spinal cord injury using hBMSC are starting, these findings may have important clinical applications.
Collapse
Affiliation(s)
- Mercedes Zurita
- Neuroscience Research Unit of Surgical Research Service, Hospital Puerta de Hierro-Majadahonda, Madrid, Spain
| | | | | | | | | | | | | |
Collapse
|
34
|
Cellular and paracellular transplants for spinal cord injury: a review of the literature. Childs Nerv Syst 2011; 27:237-43. [PMID: 20972681 DOI: 10.1007/s00381-010-1312-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Accepted: 10/11/2010] [Indexed: 01/01/2023]
Abstract
BACKGROUND Experimental approaches to limit the spinal cord injury and to promote neurite outgrowth and improved function from a spinal cord injury have exploded in recent decades. Due to the cavitation resulting after a spinal cord injury, newer important treatment strategies have consisted of implanting scaffolds with or without cellular transplants. There are various scaffolds, as well as various different cellular transplants including stem cells at different levels of differentiation, Schwann cells and peripheral nerve implants, that have been reviewed. Also, attention has been given to different re-implantation techniques in avulsion injuries. METHODS Using standard search engines, this literature is reviewed. CONCLUSION Cellular and paracellular transplantation for application to spinal cord injury offers promising results for those patients with spinal cord pathology.
Collapse
|
35
|
Yucel D, Kose GT, Hasirci V. Tissue Engineered, Guided Nerve Tube Consisting of Aligned Neural Stem Cells and Astrocytes. Biomacromolecules 2010; 11:3584-91. [DOI: 10.1021/bm1010323] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deniz Yucel
- METU, Central Laboratory, Molecular Biology and Biotechnology R&D Center, METU, BIOMAT, Departments of Biotechnology and Biological Sciences, Biotechnology Research Unit, 06531 Ankara, Turkey, and Department of Genetics and Bioengineering, Yeditepe University, 34755 Istanbul, Turkey
| | - Gamze Torun Kose
- METU, Central Laboratory, Molecular Biology and Biotechnology R&D Center, METU, BIOMAT, Departments of Biotechnology and Biological Sciences, Biotechnology Research Unit, 06531 Ankara, Turkey, and Department of Genetics and Bioengineering, Yeditepe University, 34755 Istanbul, Turkey
| | - Vasif Hasirci
- METU, Central Laboratory, Molecular Biology and Biotechnology R&D Center, METU, BIOMAT, Departments of Biotechnology and Biological Sciences, Biotechnology Research Unit, 06531 Ankara, Turkey, and Department of Genetics and Bioengineering, Yeditepe University, 34755 Istanbul, Turkey
| |
Collapse
|
36
|
Paterniti I, Mazzon E, Emanuela E, Paola RD, Galuppo M, Bramanti P, Cuzzocrea S. Modulation of inflammatory response after spinal cord trauma with deferoxamine, an iron chelator. Free Radic Res 2010; 44:694-709. [DOI: 10.3109/10715761003742993] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
37
|
Silva NA, Salgado AJ, Sousa RA, Oliveira JT, Pedro AJ, Leite-Almeida H, Cerqueira R, Almeida A, Mastronardi F, Mano JF, Neves NM, Sousa N, Reis RL. Development and Characterization of a Novel Hybrid Tissue Engineering–Based Scaffold for Spinal Cord Injury Repair. Tissue Eng Part A 2010; 16:45-54. [DOI: 10.1089/ten.tea.2008.0559] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Nuno A. Silva
- 3B's Research Group—Biomaterials, Biodegradables, and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- Institute for Biotechnology and Bioengineering, PT Government Associated Lab, Guimarães, Portugal
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Antonio J. Salgado
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Rui A. Sousa
- 3B's Research Group—Biomaterials, Biodegradables, and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- Institute for Biotechnology and Bioengineering, PT Government Associated Lab, Guimarães, Portugal
| | - Joao T. Oliveira
- 3B's Research Group—Biomaterials, Biodegradables, and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- Institute for Biotechnology and Bioengineering, PT Government Associated Lab, Guimarães, Portugal
| | - Adriano J. Pedro
- 3B's Research Group—Biomaterials, Biodegradables, and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- Institute for Biotechnology and Bioengineering, PT Government Associated Lab, Guimarães, Portugal
| | - Hugo Leite-Almeida
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Rui Cerqueira
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Armando Almeida
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Fabrizio Mastronardi
- Program in Molecular Structure and Function, The Hospital for Sick Children, Toronto, Canada
| | - João F. Mano
- 3B's Research Group—Biomaterials, Biodegradables, and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- Institute for Biotechnology and Bioengineering, PT Government Associated Lab, Guimarães, Portugal
| | - Nuno M. Neves
- 3B's Research Group—Biomaterials, Biodegradables, and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- Institute for Biotechnology and Bioengineering, PT Government Associated Lab, Guimarães, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Rui L. Reis
- 3B's Research Group—Biomaterials, Biodegradables, and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- Institute for Biotechnology and Bioengineering, PT Government Associated Lab, Guimarães, Portugal
| |
Collapse
|
38
|
Pettikiriarachchi JTS, Parish CL, Shoichet MS, Forsythe JS, Nisbet DR. Biomaterials for Brain Tissue Engineering. Aust J Chem 2010. [DOI: 10.1071/ch10159] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Neurological disorders such as traumatic brain injuries or stroke result in neuronal loss and disruption of the brain parenchyma. Current treatment strategies are limited in that they can only mitigate the degeneration process or alleviate the symptoms but do not reverse the condition. In contrast, regenerative cell-based therapies offer long-term hope for many patients. Bioactive scaffolds are likely to reinforce the success of cell replacement therapies by providing a microenvironment that facilitates the survival, proliferation, differentiation, and connectivity of transplanted and/or endogenous cells. This Review outlines various biomaterials (including hydrogels, self-assembling peptides, and electrospun nanofibres) that have been investigated for the repair of brain tissue, and discusses strategies for the immobilization of biomolecules. An overview of the potential clinical applications of such scaffolds in neurodegenerative diseases is also provided.
Collapse
|
39
|
Subramanian A, Krishnan UM, Sethuraman S. Development of biomaterial scaffold for nerve tissue engineering: Biomaterial mediated neural regeneration. J Biomed Sci 2009; 16:108. [PMID: 19939265 PMCID: PMC2790452 DOI: 10.1186/1423-0127-16-108] [Citation(s) in RCA: 329] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2009] [Accepted: 11/25/2009] [Indexed: 01/27/2023] Open
Abstract
Neural tissue repair and regeneration strategies have received a great deal of attention because it directly affects the quality of the patient's life. There are many scientific challenges to regenerate nerve while using conventional autologous nerve grafts and from the newly developed therapeutic strategies for the reconstruction of damaged nerves. Recent advancements in nerve regeneration have involved the application of tissue engineering principles and this has evolved a new perspective to neural therapy. The success of neural tissue engineering is mainly based on the regulation of cell behavior and tissue progression through the development of a synthetic scaffold that is analogous to the natural extracellular matrix and can support three-dimensional cell cultures. As the natural extracellular matrix provides an ideal environment for topographical, electrical and chemical cues to the adhesion and proliferation of neural cells, there exists a need to develop a synthetic scaffold that would be biocompatible, immunologically inert, conducting, biodegradable, and infection-resistant biomaterial to support neurite outgrowth. This review outlines the rationale for effective neural tissue engineering through the use of suitable biomaterials and scaffolding techniques for fabrication of a construct that would allow the neurons to adhere, proliferate and eventually form nerves.
Collapse
Affiliation(s)
- Anuradha Subramanian
- Center for Nanotechnology & Advanced Biomaterials, SASTRA University, Thanjavur, India.
| | | | | |
Collapse
|
40
|
Paterniti I, Genovese T, Mazzon E, Crisafulli C, Di Paola R, Galuppo M, Bramanti P, Cuzzocrea S. Liver X receptor agonist treatment regulates inflammatory response after spinal cord trauma. J Neurochem 2009; 112:611-24. [PMID: 19891733 DOI: 10.1111/j.1471-4159.2009.06471.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Liver X receptor alpha (LXRalpha) and LXRbeta are members of the nuclear receptor superfamily of ligand-activated transcription factors. The aim of this study was to investigate the effects of T0901317, a potent LXR receptor ligand, in a mouse model of spinal cord injury (SCI). SCI was induced by the application of vascular clips (force of 24 g) to the dura via a four-level T5-T8 laminectomy in mice. Treatment with T0901317, 1 and 6 h after the SCI, significantly decreased (i) the degree of spinal cord inflammation and tissue injury (histological score); (ii) neutrophil infiltration (myeloperoxidase activity); (iii) inducible nitric oxide synthase expression; (iv) nitrotyrosine, lipid peroxidation, and poly-ADP-ribose formation; (v) pro-inflammatory cytokines expression; (vi) nuclear factor-kappa B activation; and (vii) apoptosis (terminal deoxynucleotidyltransferase-mediated UTP end labeling staining, FAS ligand, Bax, and Bcl-2 expression). Moreover, T0901317 significantly ameliorated the loss of limb function (evaluated by motor recovery score). These data suggest that LXR ligand may be useful in the treatment of inflammation associated with SCI.
Collapse
Affiliation(s)
- Irene Paterniti
- Department of Clinical and Experimental Medicine and Pharmacology, School of Medicine, University of Messina, 98100 Messina, Italy
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Ceruti S, Villa G, Genovese T, Mazzon E, Longhi R, Rosa P, Bramanti P, Cuzzocrea S, Abbracchio MP. The P2Y-like receptor GPR17 as a sensor of damage and a new potential target in spinal cord injury. ACTA ACUST UNITED AC 2009; 132:2206-18. [PMID: 19528093 DOI: 10.1093/brain/awp147] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Upon central nervous system injury, the extracellular concentrations of nucleotides and cysteinyl-leukotrienes, two unrelated families of endogenous signalling molecules, are markedly increased at the site of damage, suggesting that they may act as 'danger signals' to alert responses to tissue damage and start repair. Here we show that, in non-injured spinal cord parenchyma, GPR17, a P2Y-like receptor responding to both uracil nucleotides (e.g. UDP-glucose) and cysteinyl-leukotrienes (e.g. LTD4 and LTC4), is present on a subset of neurons and of oligodendrocytes at different stages of maturation, whereas it is not expressed by astrocytes. GPR17 immunoreactivity was also found on ependymal cells lining the central canal that still retain some of the characteristics of stem/progenitor cells during adulthood. Induction of spinal cord injury (SCI) by acute compression resulted in marked cell death of GPR17+ neurons and oligodendrocytes inside the lesion followed by the appearance of proliferating GPR17+ microglia/macrophages migrating to and infiltrating into the lesioned area. Moreover, 72 h after SCI, GPR17+ ependymal cells started to proliferate and to express GFAP, suggesting their activation and 'de-differentiation' to pluripotent progenitor cells. The in vivo knock down of GPR17 by an antisense oligonucleotide strategy during SCI induction markedly reduced tissue damage and related histological and motor deficits, thus confirming the crucial role played by this receptor in the early phases of tissue damage development. Taken together, our findings suggest a dual and spatiotemporal-dependent role for GPR17 in SCI. At very early times after injury, GPR17 mediates neuronal and oligodendrocyte death inside the lesioned area. At later times, GPR17+ microglia/macrophages are recruited from distal parenchymal areas and move toward the lesioned zone, to suggest a role in orchestrating local remodelling responses. At the same time, the induction of the stem cell marker GFAP in GPR17+ ependymal cells suggests initiation of repair mechanisms. Thus, GPR17 may act as a 'sensor' of damage that is activated by nucleotides and cysteinyl-leukotrienes released in the lesioned area, and could also participate in post-injury responses. Moreover, its presence on spinal cord pre-oligodendrocytes and precursor-like cells suggests GPR17 as a novel target for therapeutic manipulation to foster remyelination and functional repair in SCI.
Collapse
Affiliation(s)
- Stefania Ceruti
- Laboratory of Molecular and Cellular Pharmacology of Purinergic Transmission, Department of Pharmacological Sciences, University of Milan, Milan, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
He L, Zhang Y, Zeng C, Ngiam M, Liao S, Quan D, Zeng Y, Lu J, Ramakrishna S. Manufacture of PLGA Multiple-Channel Conduits with Precise Hierarchical Pore Architectures and In Vitro/Vivo Evaluation for Spinal Cord Injury. Tissue Eng Part C Methods 2009; 15:243-55. [DOI: 10.1089/ten.tec.2008.0255] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Liumin He
- Institute of Polymer Science, School of Chemistry and Chemical Engineering, BME Center, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, China
- Nanoscience and Nanotechnology Initiative, Division of Bioengineering, National University of Singapore, Singapore, Singapore
| | - Yanqing Zhang
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Chenguang Zeng
- Institute of Polymer Science, School of Chemistry and Chemical Engineering, BME Center, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, China
| | - Michelle Ngiam
- Nanoscience and Nanotechnology Initiative, Division of Bioengineering, National University of Singapore, Singapore, Singapore
| | - Susan Liao
- Nanoscience and Nanotechnology Initiative, Division of Bioengineering, National University of Singapore, Singapore, Singapore
| | - Daping Quan
- Institute of Polymer Science, School of Chemistry and Chemical Engineering, BME Center, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, China
| | - Yuanshan Zeng
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Jiang Lu
- Institute of Polymer Science, School of Chemistry and Chemical Engineering, BME Center, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, China
| | - Seeram Ramakrishna
- Nanoscience and Nanotechnology Initiative, Division of Bioengineering, National University of Singapore, Singapore, Singapore
| |
Collapse
|
43
|
Salgado A, Sousa R, Fraga J, Pego J, Silva B, Malva J, Neves N, Reis R, Sousa N. Effects of Starch/ Polycaprolactone-based Blends for Spinal Cord Injury Regeneration in Neurons/Glial Cells Viability and Proliferation. J BIOACT COMPAT POL 2009. [DOI: 10.1177/0883911509104081] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Spinal cord injury (SCI) leads to drastic alterations on the quality of life of afflicted individuals. With the advent of Tissue Engineering and Regenerative Medicine where approaches combining biomaterials, cells and growth factors are used, one can envisage novel strategies that can adequately tackle this problem. The objective of this study was to evaluate a blend of starch with poly(ε-caprolactone) (SPCL) aimed to be used for the development of scaffolds spinal cord injury (SCI) repair. SPCL linear parallel filaments were deposited on polystyrene coverslips and assays were carried out using primary cultures of hippocampal neurons and glial cells. Light and fluorescence microscopy observations revealed that both cell populations were not negatively affected by the SPCL-based biomaterial. MTS and total protein quantification indicated that both cell viability and proliferation rates were similar to controls. Both neurons and astrocytes occasionally contacted the surface of SPCL filaments through their dendrites and cytoplasmatic processes, respectively, while microglial cells were unable to do so. Using single cell [Ca2+ ]i imaging, hippocampal neurons were observed growing within the patterned channels and were functional as assessed by the response to a 30 mM KCl stimulus. The present data demonstrated that SPCL-based blends are potentially suitable for the development of scaffolds in SCI regenerative medicine.
Collapse
Affiliation(s)
- A.J. Salgado
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal
| | - R.A. Sousa
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine AvePark, 4806-909 Taipas, Guimarães, Portugal, IBB, Institute for Bioengineering and Biotechnology, PT Associated Lab 4710-57 Braga, Portugal
| | - J.S. Fraga
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal
| | - J.M. Pego
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal
| | - B.A. Silva
- Centre for Neuroscience and Cell Biology, University of Coimbra 3004-504 Coimbra, Portugal
| | - J.O. Malva
- Centre for Neuroscience and Cell Biology, University of Coimbra 3004-504 Coimbra, Portugal, Institute of Biochemistry, Faculty of Medicine, University of Coimbra 3004-504 Coimbra, Portugal
| | - N.M. Neves
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine AvePark, 4806-909 Taipas, Guimarães, Portugal, IBB, Institute for Bioengineering and Biotechnology, PT Associated Lab 4710-57 Braga, Portugal
| | - R.L. Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine AvePark, 4806-909 Taipas, Guimarães, Portugal, IBB, Institute for Bioengineering and Biotechnology, PT Associated Lab 4710-57 Braga, Portugal
| | - N. Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal,
| |
Collapse
|
44
|
Comolli N, Neuhuber B, Fischer I, Lowman A. In vitro analysis of PNIPAAm-PEG, a novel, injectable scaffold for spinal cord repair. Acta Biomater 2009; 5:1046-55. [PMID: 19054721 PMCID: PMC2844850 DOI: 10.1016/j.actbio.2008.10.008] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Revised: 09/30/2008] [Accepted: 10/08/2008] [Indexed: 11/20/2022]
Abstract
Nervous tissue engineering in combination with other therapeutic strategies is an emerging trend for the treatment of different CNS disorders and injuries. We propose to use poly(N-isopropylacrylamide)-co-poly(ethylene glycol) (PNIPAAm-PEG) as a minimally invasive, injectable scaffold platform for the repair of spinal cord injury (SCI). The scaffold allows cell attachment, and provides mechanical support and a sustained release of neurotrophins. In order to use PNIPAAm-PEG as an injectable scaffold for treatment of SCI, it must maintain its mass and volume over time in physiological conditions. To provide mechanical support at the injury site, it is also critical that the engineered scaffold matches the compressive modulus of the native neuronal tissue. This study focused on studying the ability of the scaffold to release bioactive neurotrophins and matching the material properties to those of the native neuronal tissue. We found that the release of both BDNF and NT-3 was sustained for up to 4 weeks, with a minimal burst exhibited for both neurotrophins. The bioactivity of the released NT-3 and BDNF was confirmed after 4 weeks. In addition, our results show that the PNIPAAm-PEG scaffold can be designed to match the desired mechanical properties of the native neuronal tissue, with a compressive modulus in the 3-5 kPa range. The scaffold was also compatible with bone marrow stromal cells, allowing their survival and attachment for up to 31 days. These results indicate that PNIPAAm-PEG is a promising multifunctional scaffold for the treatment of SCI.
Collapse
Affiliation(s)
- Noelle Comolli
- Department of Chemical & Biological Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA
| | | | | | | |
Collapse
|