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Stepanova OV, Fursa GA, Karsuntseva EK, Andretsova SS, Chadin AV, Voronova AD, Shishkina VS, Semkina AS, Reshetov IV, Chekhonin VP. Features of Remyelination after Transplantation of Olfactory Ensheathing Cells with Neurotrophic Factors into Spinal Cord Cysts. Bull Exp Biol Med 2024; 176:666-671. [PMID: 38727956 DOI: 10.1007/s10517-024-06088-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Indexed: 05/18/2024]
Abstract
This paper shows for the first time that co-transplantation of human olfactory ensheathing cells with neurotrophin-3 into spinal cord cysts is more effective for activation of remyelination than transplantation of cells with brain-derived neurotrophic factor and a combination of these two factors. The studied neurotrophic factors do not affect proliferation and migration of ensheathing cells in vitro. It can be concluded that the maximum improvement of motor function in rats receiving ensheathing cells with neurotrophin-3 is largely determined by activation of remyelination.
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Affiliation(s)
- O V Stepanova
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
- E. I. Chazov National Medical Research Center of Cardiology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - G A Fursa
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - E K Karsuntseva
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - S S Andretsova
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
- M. V. Lomonosov Moscow State University, Moscow, Russia
| | - A V Chadin
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A D Voronova
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - V S Shishkina
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A S Semkina
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
- Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - I V Reshetov
- University Clinical Hospital, I. M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - V P Chekhonin
- V. P. Serbsky National Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
- Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
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2
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Sivanarayanan TB, Bhat IA, Sharun K, Palakkara S, Singh R, Remya, Parmar MS, Bhardwaj R, Chandra V, Munuswamy P, Kinjavdekar P, Pawde AM, Amarpal, Sharma GT. Allogenic bone marrow-derived mesenchymal stem cells and its conditioned media for repairing acute and sub-acute peripheral nerve injuries in a rabbit model. Tissue Cell 2023; 82:102053. [PMID: 36907044 DOI: 10.1016/j.tice.2023.102053] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023]
Abstract
The present study evaluated healing potential of bone marrow-derived mesenchymal stem cells (BM-MSCs) and BM-MSCs-conditioned medium (BM-MSCs-CM) for acute and subacute injuries in the rabbit peripheral nerve injury model. The regenerative capacity of MSCs was evaluated in 40 rabbits divided into eight groups, four groups each for acute and subacute injury models. BM-MSCs and BM-MSCS-CM were prepared by isolating allogenic bone marrow from the iliac crest. After inducing sciatic nerve crush injury, different treatments consisting of PBS, Laminin, BM-MSCs + laminin, and BM-MSCS-CM + laminin were used on the day of injury in the acute injury model and after ten days of crush injury in the subacute groups. The parameters studied included: pain, total neurological score, gastrocnemius muscle weight and volume ratio, histopathology of the sciatic nerve and gastrocnemius muscle, and scanning electron microscopy (SEM). Findings indicate that BM-MSCs and BM-MSCS-CM have augmented the regenerative capacity in acute and subacute injury groups with a slightly better improvement in the subacute groups than the animals in acute injury groups. Histopathology data revealed different levels of regenerative process undergoing in the nerve. Neurological observations, gastrocnemius muscle evaluation, muscle histopathology, and the SEM results depicted better healing in animals treated with BM-MSCs and BM-MSCS-CM. With this data, it could be concluded that BM-MSCs support the healing of injured peripheral nerves, and the BM-MSCS-CM does accelerate the healing of acute and subacute peripheral nerve injuries in rabbits. However, stem cell therapy may be indicated during the subacute phase for better results.
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Affiliation(s)
- T B Sivanarayanan
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Irfan Ahmad Bhat
- Division of Physiology and Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Khan Sharun
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Sangeetha Palakkara
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Rashmi Singh
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Remya
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Mehtab Singh Parmar
- Division of Physiology and Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Rahul Bhardwaj
- Division of Physiology and Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Vikash Chandra
- Division of Physiology and Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Palanivelu Munuswamy
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Prakash Kinjavdekar
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - A M Pawde
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Amarpal
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India.
| | - G Taru Sharma
- National Institute of Animal Biotechnology, Hyderabad 500032, India.
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3
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Mahdavi-Jouibari F, Parseh B, Kazeminejad E, Khosravi A. Hopes and opportunities of stem cells from human exfoliated deciduous teeth (SHED) in cartilage tissue regeneration. Front Bioeng Biotechnol 2023; 11:1021024. [PMID: 36860887 PMCID: PMC9968979 DOI: 10.3389/fbioe.2023.1021024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/30/2023] [Indexed: 02/17/2023] Open
Abstract
Cartilage lesions are common conditions, affecting elderly and non-athletic populations. Despite recent advances, cartilage regeneration remains a major challenge today. The absence of an inflammatory response following damage and the inability of stem cells to penetrate into the healing site due to the absence of blood and lymph vessels are assumed to hinder joint repair. Stem cell-based regeneration and tissue engineering have opened new horizons for treatment. With advances in biological sciences, especially stem cell research, the function of various growth factors in the regulation of cell proliferation and differentiation has been established. Mesenchymal stem cells (MSCs) isolated from different tissues have been shown to increase into therapeutically relevant cell numbers and differentiate into mature chondrocytes. As MSCs can differentiate and become engrafted inside the host, they are considered suitable candidates for cartilage regeneration. Stem cells from human exfoliated deciduous teeth (SHED) provide a novel and non-invasive source of MSCs. Due to their simple isolation, chondrogenic differentiation potential, and minimal immunogenicity, they can be an interesting option for cartilage regeneration. Recent studies have reported that SHED-derived secretome contains biomolecules and compounds that efficiently promote regeneration in damaged tissues, including cartilage. Overall, this review highlighted the advances and challenges of cartilage regeneration using stem cell-based therapies by focusing on SHED.
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Affiliation(s)
- Forough Mahdavi-Jouibari
- Department of Medical Biotechnology, Faculty of Advanced Medical Technologies, Golestan University of Medical Sciences, Gorgan, Iran
| | - Benyamin Parseh
- Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan, Iran,Faculty of Advanced Medical Technologies, Golestan University of Medical Sciences, Gorgan, Iran
| | - Ezatolah Kazeminejad
- Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan, Iran,Dental Research Center, Golestan University of Medical Sciences, Gorgan, Iran,*Correspondence: Ezatolah Kazeminejad, Dr. ; Ayyoob Khosravi,
| | - Ayyoob Khosravi
- Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan, Iran,Department of Molecular Medicine, Faculty of Advanced Medical Technologies, Golestan University of Medical Sciences, Gorgan, Iran,*Correspondence: Ezatolah Kazeminejad, Dr. ; Ayyoob Khosravi,
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4
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Younger DS. Spinal cord motor disorders. HANDBOOK OF CLINICAL NEUROLOGY 2023; 196:3-42. [PMID: 37620076 DOI: 10.1016/b978-0-323-98817-9.00007-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
Spinal cord diseases are frequently devastating due to the precipitous and often permanently debilitating nature of the deficits. Spastic or flaccid paraparesis accompanied by dermatomal and myotomal signatures complementary to the incurred deficits facilitates localization of the insult within the cord. However, laboratory studies often employing disease-specific serology, neuroradiology, neurophysiology, and cerebrospinal fluid analysis aid in the etiologic diagnosis. While many spinal cord diseases are reversible and treatable, especially when recognized early, more than ever, neuroscientists are being called to investigate endogenous mechanisms of neural plasticity. This chapter is a review of the embryology, neuroanatomy, clinical localization, evaluation, and management of adult and childhood spinal cord motor disorders.
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Affiliation(s)
- David S Younger
- Department of Clinical Medicine and Neuroscience, CUNY School of Medicine, New York, NY, United States; Department of Medicine, Section of Internal Medicine and Neurology, White Plains Hospital, White Plains, NY, United States.
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5
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Neurotrophin-3 Enhances the Effectiveness of Cell Therapy in Chronic Spinal Cord Injuries. Bull Exp Biol Med 2022; 173:114-118. [DOI: 10.1007/s10517-022-05504-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Indexed: 11/25/2022]
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6
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Effectiveness of biomaterial-based combination strategies for spinal cord repair – a systematic review and meta-analysis of preclinical literature. Spinal Cord 2022; 60:1041-1049. [DOI: 10.1038/s41393-022-00811-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 12/13/2022]
Abstract
Abstract
Study design
Systematic review and meta-analysis of preclinical literature.
Objectives
To assess the effects of biomaterial-based combination (BMC) strategies for the treatment of Spinal Cord Injury (SCI), the effects of individual biomaterials in the context of BMC strategies, and the factors influencing their efficacy. To assess the effects of different preclinical testing paradigms in BMC strategies.
Methods
We performed a systematic literature search of Embase, Web of Science and PubMed. All controlled preclinical studies describing an in vivo or in vitro model of SCI that tested a biomaterial in combination with at least one other regenerative strategy (cells, drugs, or both) were included. Two review authors conducted the study selection independently, extracted study characteristics independently and assessed study quality using a modified CAMARADES checklist. Effect size measures were combined using random-effects models and heterogeneity was explored using meta-regression with tau2, I2 and R2 statistics. We tested for small-study effects using funnel plot–based methods.
Results
134 publications were included, testing over 100 different BMC strategies. Overall, treatment with BMC therapies improved locomotor recovery by 25.3% (95% CI, 20.3–30.3; n = 102) and in vivo axonal regeneration by 1.6 SD (95% CI 1.2–2 SD; n = 117) in comparison with injury only controls.
Conclusion
BMC strategies improve locomotor outcomes after experimental SCI. Our comprehensive study highlights gaps in current knowledge and provides a foundation for the design of future experiments.
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7
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Voronova AD, Stepanova OV, Chadin AV, Fursa GA, Karsuntseva EK, Valikhov MP, Semkina АS, Reshetov IV, Chekhonin VP. The Effect of Transplantation of Olfactory Ensheathing Cells on the Size of Posttraumatic Spinal Cord Cysts. Bull Exp Biol Med 2021; 171:122-126. [PMID: 34046791 DOI: 10.1007/s10517-021-05183-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Indexed: 01/14/2023]
Abstract
We studied the effect of transplantation of ensheathing cells obtained from the olfactory mucosa of rats and humans on the size of posttraumatic spinal cord cysts. MRI examination showed that transplantation of these cells into experimental posttraumatic cysts of the spinal cord led to a significant decrease in cyst volume and even their complete disappearance in two animals receiving transplantation of rat or human cells. These findings attested to regenerative processes developing as a result of ensheathing cell transplantation. Further studies in this field will be aimed at elucidation of the mechanisms underlying spinal cord regeneration in the area of posttraumatic cysts after transplantation of ensheathing cells.
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Affiliation(s)
- A D Voronova
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - O V Stepanova
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,National Medical Research Center of Cardiology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A V Chadin
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - G A Fursa
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,M. V. Lomonosov Moscow State University, Moscow, Russia
| | - E K Karsuntseva
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,M. V. Lomonosov Moscow State University, Moscow, Russia
| | - M P Valikhov
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,National Medical Research Center of Cardiology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - А S Semkina
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - I V Reshetov
- University Clinical Hospital No. 1, I. M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - V P Chekhonin
- V. P. Serbsky National Medical Research Center of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
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8
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Zhang H, Zhang W, Bai G, Gao L, Li K. Bone Morphogenetic Protein-7 (BMP-7) Promotes Neuronal Differentiation of Bone Marrow Mesenchymal Stem Cells (BMSCs) In Vitro. BIOMED RESEARCH INTERNATIONAL 2021; 2021:7239783. [PMID: 33575343 PMCID: PMC7857886 DOI: 10.1155/2021/7239783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/15/2020] [Accepted: 01/16/2021] [Indexed: 11/18/2022]
Abstract
This study is aimed at investigating the effects of bone morphogenetic protein-7 (BMP-7) on the differentiation of bone marrow mesenchymal stem cells (BMSCs) into neuron-like cells in vitro. The rat BMSCs were isolated and identified, which were divided into the control, empty, recombinant rhBMP-7 transfection, and Lv-BMP-7 transfection groups. BMSCs were induced under different conditions. CCK-8 assay was performed to detect cell proliferation. ALP was used to detect cell activity. Cellular morphology after induction was observed. Immunofluorescence was conducted to detect the expression and location of nerve cell markers. Quantitative real-time PCR and Western blot analysis were performed to detect the mRNA and protein expression levels, respectively. The rhBMP-7 and Lv-BMP-7 promoted the proliferation of BMSCs, accompanied with increased ALP activities. Morphological observations revealed that rhBMP-7 and Lv-BMP-7 induced BMSCs to differentiate into neuron-like cells. Immunofluorescence revealed that the rhBMP-7 and Lv-BMP-7 groups showed positive expression of MAP-2 and Nfh in BMSCs. MAP-2 was mainly distributed in the cell body and cellular protrusion, while Nfh was mainly distributed in the cytoplasm and cell protrusion. Positive mRNA and protein expressions of MAP-2 and Nfh were observed in the cells of the rhBMP-7 and Lv-BMP-7 groups, and the expression levels were significantly higher than the control and empty groups. Both exogenous BMP-7 (rhBMP-7) and endogenous BMP-7 (Lv-BMP-7) can induce BMSCs to differentiate into neuron-like cells highly expressing the neuronal markers MAP-2 and Nfh.
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Affiliation(s)
- Heng Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Bengbu Medical College, Laboratory of Tissue and Transplant in Anhui Province, Bengbu Medical College, Bengbu City, China
| | - Wen Zhang
- Department of Orthopaedics, The Second Affiliated Hospital of Medical College, Shihezi University, Xinjiang, China
| | - Guangchao Bai
- Department of Orthopaedics, The Second Affiliated Hospital of Medical College, Shihezi University, Xinjiang, China
| | - Lei Gao
- Department of Orthopaedics, The Second Affiliated Hospital of Medical College, Shihezi University, Xinjiang, China
| | - Kuanxin Li
- Department of Orthopaedics, The First Affiliated Hospital of Bengbu Medical College, Laboratory of Tissue and Transplant in Anhui Province, Bengbu Medical College, Bengbu City, China
- Department of Orthopaedics, The Second Affiliated Hospital of Medical College, Shihezi University, Xinjiang, China
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9
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Preparation of Adhesion Culture of Neural Stem/Progenitor Cells of the Olfactory Mucosa for the Treatment of Spinal Cord Injuries. Bull Exp Biol Med 2020; 170:158-163. [PMID: 33231802 DOI: 10.1007/s10517-020-05023-0] [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: 12/04/2019] [Indexed: 10/22/2022]
Abstract
In this work, an optimal protocol was developed for obtaining adhesion culture of neural stem/progenitor cells (NSPC) of rat olfactory mucosa. During the development of the protocol, the conditions for cell culturing on adhesion substrates fibronectin and laminin in DMEM/F-12 and neurobasal media with the same culture additives were compared. Cell proliferation was maximum during culturing on both substrates in the neurobasal medium. Using the immunofluorescence method, we found that culturing on fibronectin in the neurobasal medium ensured maximum (52.22%) content of nestin-positive cells in comparison with other culturing conditions. The highest percentage of βIII-tubulin-positive cells was detected in cultures growing on fibronectin in the neurobasal medium and in DMEM/F-12 (79.11 and 83.52%, respectively). Culturing in adhesion cultures in the neurobasal medium on fibronectin allowed obtaining cultures enriched with NSPC and neurons differentiating from them in a quantity sufficient for further transplantation. The developed protocol can be recommended for obtaining NPSC from human olfactory mucosa for the treatment of spinal cord injuries.
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10
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Voronova AD, Stepanova OV, Valikhov MP, Chadin AV, Semkina AS, Karsuntseva EK, Fursa GA, Reshetov IV, Chekhonin VP. Combined Preparation of Human Olfactory Ensheathing Cells in the Therapy of Post-Traumatic Cysts of the Spinal Cord. Bull Exp Biol Med 2020; 169:539-543. [PMID: 32910386 DOI: 10.1007/s10517-020-04925-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Indexed: 01/11/2023]
Abstract
In experiments on rats, co-transplantation of olfactory ensheathing cells of the human olfactory mucosa and neural stem/progenitor cells from the same source into post-traumatic cysts of the spinal cord led to improvement of the motor activity of the hind limbs and reduced the size of the cysts in some animals by 4-12%. The transplantation of a combination of the olfactory mucosa cells is effective and can be used in preclinical trials for the treatment of spinal cord injuries.
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Affiliation(s)
- A D Voronova
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - O V Stepanova
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,Depatrment of Neurohumoral and Immunological Studies, National Medical Research Center of Cardiology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - M P Valikhov
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,Depatrment of Neurohumoral and Immunological Studies, National Medical Research Center of Cardiology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A V Chadin
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A S Semkina
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - E K Karsuntseva
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,M. V. Lomonosov Moscow State University, Moscow, Russia
| | - G A Fursa
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia.,M. V. Lomonosov Moscow State University, Moscow, Russia
| | - I V Reshetov
- University Clinical Hospital No. 1, I. M. Se-chenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - V P Chekhonin
- Department of Fundamental and Applied Neurobiology, V. P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, Ministry of Health of the Russian Federation, Moscow, Russia
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11
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Placenta-derived multipotent mesenchymal stromal cells: a promising potential cell-based therapy for canine inflammatory brain disease. Stem Cell Res Ther 2020; 11:304. [PMID: 32698861 PMCID: PMC7374910 DOI: 10.1186/s13287-020-01799-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 06/25/2020] [Accepted: 07/01/2020] [Indexed: 01/01/2023] Open
Abstract
Background Canine inflammatory brain disease (IBD) is a severe inflammatory disorder characterized by infiltration of activated immune cell subsets into the brain and spinal cord. Multipotent mesenchymal stromal cells (MSCs) are a promising therapy for IBD, based on their potent pro-angiogenic, neuroprotective, and immunomodulatory properties. The aims of this study were to compare the immunomodulatory attributes of canine adipose-derived MSCs (ASCs) and placenta-derived MSCs (PMSCs) in vitro. These data will serve as potency information to help inform the optimal MSC cell source to treat naturally occurring canine IBD. Methods Indoleamine 2,3 dioxygenase (IDO) activity and prostaglandin E2 (PGE2) concentration at baseline and after stimulation with interferon gamma (IFNγ) and/or tumor necrosis factor alpha (TNFα) were measured from canine ASC and PMSC cultures. Leukocyte suppression assays (LSAs) were performed to compare the ability of ASCs and PMSCs to inhibit activated peripheral blood mononuclear cell (PBMC) proliferation. IDO activity and PGE2; interleukin (IL)-2, IL-6, and IL-8; TNFα; and vascular endothelial growth factor (VEGF) concentrations were also measured from co-culture supernatants. Cell cycle analysis was performed to determine how ASCs and PMSCs altered lymphocyte proliferation. Results Activated canine MSCs from both tissue sources secreted high concentrations of IDO and PGE2, after direct stimulation with IFNγ and TNFα, or indirect stimulation by activated PBMCs. Both ASCs and PMSCs inhibited activated PBMC proliferation in LSA assays; however, PMSCs inhibited PBMC proliferation significantly more than ASCs. Blocking PGE2 and IDO in LSA assays determined that PGE2 is important only for ASC inhibition of PBMC proliferation. Activated ASCs increased IL-6 and VEGF secretion and decreased TNFα secretion, while activated PMSCs increased IL-6, IL-8, and VEGF secretion. ASCs inhibited lymphocyte proliferation via cell cycle arrest in the G0/G1 and PMSCs inhibited lymphocyte proliferation via induction of lymphocyte apoptosis. Conclusion Our results demonstrate that ASCs and PMSCs have substantial in vitro potential as a cell-based therapy for IBD; however, PMSCs more potently inhibited lymphocyte proliferation by inducing apoptosis of activated lymphocytes. These data suggest that the mechanism by which ASCs and PMSCs downregulate PBMC proliferation differs. Additional studies may elucidate additional mechanisms by which canine MSCs modulate neuroinflammatory responses.
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12
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Stepanova OV, Voronova AD, Chadin AV, Valikhov MP, Semkina AS, Karsuntseva EK, Chekhonin IV, Shishkina VS, Reshetov IV, Chekhonin VP. Efficiency of Human Olfactory Ensheathing Cell Transplantation into Spinal Cysts to Improve Mobility of the Hind Limbs. Stem Cells Dev 2019; 28:1253-1263. [PMID: 31310179 DOI: 10.1089/scd.2019.0092] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The pathological processes developing after spinal cord injuries often lead to formation of cysts. Existing surgical and medical methods are insufficient for treatment of post-traumatic spinal cord cysts. One of the emerging tools is cell therapy. Olfactory ensheathing cells (OECs) are perspective cells for cell therapy. In this study, we demonstrated that human OEC transplantation is effective in experimental spinal cysts. For our experiments, we selected animals only at the intermediate stage of recovery with scores from 8 to 13 according to the Basso, Beattie, and Bresnahan (BBB) scale. Cells were transplanted in different quantities (0.75 and 1.5 million) into the fully formed cysts and in the areas of injury without cysts. Improvement of limb mobility after human OEC transplantation into post-traumatic cysts was shown. In the group of rats with cysts, time-dependent increase in the BBB score was observed in subgroups treated with 0.75 and 1.5 million OECs with no statistically significant time-dependent dynamics of BBB values in the control group. When all three subgroups (control and two OEC doses) were compared, the Kruskal-Wallis test showed the presence of differences between subgroups after 1, 3, and 4 weeks of treatment with evidence of divergence increase. There was no statistically significant difference between the two doses of OEC treatment. The human OECs in the experiments without cysts were not effective. It was also shown that PKH26-labeled human OECs survive throughout the experiment and migrate to nearby areas of the cyst. Therefore, it was found that it is effective to transplant human OECs into fully formed cysts. In the future, autologous OECs can be used to personalize the treatment of patients with spinal cysts.
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Affiliation(s)
- Olga V Stepanova
- Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia.,Department of Neurohumoral and Immunological Research, National Medical Research Center of Cardiology, Moscow, Russia
| | - Anastasia D Voronova
- Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia.,Department of Medical Nanobiotechnologies, N.I. Pirogov Russian National Research Medical University, Moscow, Russia
| | - Andrey V Chadin
- Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia
| | - Marat P Valikhov
- Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia.,Department of Neurohumoral and Immunological Research, National Medical Research Center of Cardiology, Moscow, Russia
| | - Alevtina S Semkina
- Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia.,Department of Medical Nanobiotechnologies, N.I. Pirogov Russian National Research Medical University, Moscow, Russia
| | | | - Ivan V Chekhonin
- Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia
| | | | - Igor V Reshetov
- Department of Plastic Surgery, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Vladimir P Chekhonin
- Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia.,Department of Medical Nanobiotechnologies, N.I. Pirogov Russian National Research Medical University, Moscow, Russia
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13
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In Vitro Targeting and Imaging of Neurogenic Differentiation in Mouse Bone-Marrow Derived Mesenchymal Stem Cells with Superparamagnetic Iron Oxide Nanoparticles. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Spinal cord injuries (SCI) are well thought to be a crucial issue that roots various side effects for a patient during their entire lifetime. Although therapeutical methods to resolve the SCI are limited, stem cell therapy is determined to be a resolving factor since it possesses the ability to induce the neurogenic differentiation and the paracrine effect. However, stem cells are difficult to inject directly into the lesion, so they must be carefully guided through the spinal canal. Therefore, superparamagnetic iron oxide nanoparticles (SPIONs) are introduced as an instigator that makes the cells respond to the applied magnetic field. This study intends to report the synthesis strategy to develop SPIONs that could be used to treat the injury site by an applied magnetic field. SPION-internalized D1 Mesenchymal stem cells (MSCs) are observed consistently using a confocal fluorescence microscope to analyze the toxicity, maintenance, and monitoring points of intracellular SPIONs. The prepared SPIONs are much anticipated to increase the migration efficiency using magnetism, which was not cytotoxic. Hence, the prepared SPIONs can adeptly target the damaged neural tissue to promote tissue regeneration and treat nervous system disorders. This primary study stands as a focal point to solve SCI by stem cell migration effectively.
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14
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Song P, Xia X, Han T, Fang H, Wang Y, Dong F, Zhang R, Ge P, Shen C. BMSCs promote the differentiation of NSCs into oligodendrocytes via mediating Id2 and Olig expression through BMP/Smad signaling pathway. Biosci Rep 2018; 38:BSR20180303. [PMID: 30143582 PMCID: PMC6147919 DOI: 10.1042/bsr20180303] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 08/02/2018] [Accepted: 08/08/2018] [Indexed: 01/01/2023] Open
Abstract
Neural stem cells (NSCs) have emerged as a promising treatment for spinal cord injuries. However, the increasing expression of bone morphogenetic proteins (BMPs) in spinal cord injury lesion sites seems to have contributed to the limited oligodendroglial differentiation and the majority of the astroglial differentiation of NSCs. In the present study, we demonstrate that BMPs promote NSCs differentiation toward astrocytes and prevent them from differentiating into oligodendrocytes. This effect is accompanied by the increasing expression of Id2 and the reduction in Oilg1/2 expression. Treatment with bone marrow stromal cells (BMSCs) can enhance the development of oligodendrocytes in the presence of BMPs. The analysis of Id2, as well as Olig1 and Olig2 gene expression, reveals that the effect of BMPs on these gene expressions is reversed with the addition of BMSCs. In sum, these data strongly suggest that BMSCs can promote the differentiation of NSCs into oligodendrocytes through mediating Id2 and Olig1/2 expression by blocking the BMP/Smad signaling pathway.
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Affiliation(s)
- Peiwen Song
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Xiang Xia
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Tianyu Han
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Huang Fang
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Ying Wang
- Department of Medical Imaging, The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Fulong Dong
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Renjie Zhang
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Peng Ge
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
| | - Cailiang Shen
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Shushan District, Hefei City, Anhui Province, China
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15
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Schaal SM, Kitay BM, Cho KS, Lo TP, Barakat DJ, Marcillo AE, Sanchez AR, Andrade CM, Pearse DD. Schwann Cell Transplantation Improves Reticulospinal Axon Growth and Forelimb Strength after Severe Cervical Spinal Cord Contusion. Cell Transplant 2017; 16:207-28. [PMID: 17503734 DOI: 10.3727/000000007783464768] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Schwann cell (SC) implantation alone has been shown to promote the growth of propriospinal and sensory axons, but not long-tract descending axons, after thoracic spinal cord injury (SCI). In the current study, we examined if an axotomy close to the cell body of origin (so as to enhance the intrinsic growth response) could permit supraspinal axons to grow onto SC grafts. Adult female Fischer rats received a severe (C5) cervical contusion (1.1 mm displacement, 3 KDyn). At 1 week postinjury, 2 million SCs ex vivo transduced with lentiviral vector encoding enhanced green fluorescent protein (EGFP) were implanted within media into the injury epicenter; injury-only animals served as controls. Animals were tested weekly using the BBB score for 7 weeks postimplantation and received at end point tests for upper body strength: self-supported forelimb hanging, forearm grip force, and the incline plane. Following behavioral assessment, animals were anterogradely traced bilaterally from the reticular formation using BDA-Texas Red. Stereological quantification revealed a twofold increase in the numbers of preserved NeuN+ neurons rostral and caudal to the injury/graft site in SC implanted animals, corroborating previous reports of their neuroprotective efficacy. Examination of labeled reticulospinal axon growth revealed that while rarely an axon was present within the lesion site of injury-only controls, numerous reticulospinal axons had penetrated the SC implant/lesion milieu. This has not been observed following implantation of SCs alone into the injured thoracic spinal cord. Significant behavioral improvements over injury-only controls in upper limb strength, including an enhanced grip strength (a 296% increase) and an increased self-supported forelimb hanging, accompanied SC-mediated neuroprotection and reticulospinal axon growth. The current study further supports the neuroprotective efficacy of SC implants after SCI and demonstrates that SCs alone are capable of supporting modest supraspinal axon growth when the site of axon injury is closer to the cell body of the axotomized neuron.
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Affiliation(s)
- S M Schaal
- The Miami Project to Cure Paralysis, University of Miami School of Medicine, Miami, FL 33101, USA
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16
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Transplantation of hUC-MSCs seeded collagen scaffolds reduces scar formation and promotes functional recovery in canines with chronic spinal cord injury. Sci Rep 2017; 7:43559. [PMID: 28262732 PMCID: PMC5337930 DOI: 10.1038/srep43559] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 01/25/2017] [Indexed: 12/15/2022] Open
Abstract
Spinal cord injury (SCI) can lead to locomotor deficits, and the repair of chronic SCI is considered one of the most challenging clinical problems. Although extensive studies have evaluated treatments for acute SCI in small animals, comparatively fewer studies have been conducted on large-animal SCI in the chronic phase, which is more clinically relevant. Here, we used a collagen-based biomaterial, named the NeuroRegen scaffold, loaded with human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) in a canine chronic SCI model. To generate chronic SCI, the T8 spinal cord segment was removed by complete transection of the spinal cord. Two months later, glial scar tissue was removed and a NeuroRegen scaffold was transplanted into the lesion area. Functionalized NeuroRegen scaffold implantation promoted both locomotor recovery and endogenous neurogenesis in the lesion area. Moreover, some newly generated neurons successfully matured into 5-HT-positive neurons at 1 year post-injury. In addition, many regenerated axon fibers in the lesion area exhibited remyelination and synapse formation at 1 year post-injury in the functionalized NeuroRegen scaffold group. In conclusion, the NeuroRegen scaffold functionalized with hUC-MSCs is a promising potential therapeutic approach to chronic SCI that promotes neuronal regeneration, reduces glial scar formation, and ultimately improves locomotor recovery.
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17
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Maggio DM, Singh A, Iorgulescu JB, Bleicher DH, Ghosh M, Lopez MM, Tuesta LM, Flora G, Dietrich WD, Pearse DD. Identifying the Long-Term Role of Inducible Nitric Oxide Synthase after Contusive Spinal Cord Injury Using a Transgenic Mouse Model. Int J Mol Sci 2017; 18:ijms18020245. [PMID: 28125047 PMCID: PMC5343782 DOI: 10.3390/ijms18020245] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/05/2017] [Accepted: 01/15/2017] [Indexed: 02/07/2023] Open
Abstract
Inducible nitric oxide synthase (iNOS) is a potent mediator of oxidative stress during neuroinflammation triggered by neurotrauma or neurodegeneration. We previously demonstrated that acute iNOS inhibition attenuated iNOS levels and promoted neuroprotection and functional recovery after spinal cord injury (SCI). The present study investigated the effects of chronic iNOS ablation after SCI using inos-null mice. iNOS-/- knockout and wild-type (WT) control mice underwent a moderate thoracic (T8) contusive SCI. Locomotor function was assessed weekly, using the Basso Mouse Scale (BMS), and at the endpoint (six weeks), by footprint analysis. At the endpoint, the volume of preserved white and gray matter, as well as the number of dorsal column axons and perilesional blood vessels rostral to the injury, were quantified. At weeks two and three after SCI, iNOS-/- mice exhibited a significant locomotor improvement compared to WT controls, although a sustained improvement was not observed during later weeks. At the endpoint, iNOS-/- mice showed significantly less preserved white and gray matter, as well as fewer dorsal column axons and perilesional blood vessels, compared to WT controls. While short-term antagonism of iNOS provides histological and functional benefits, its long-term ablation after SCI may be deleterious, blocking protective or reparative processes important for angiogenesis and tissue preservation.
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Affiliation(s)
- Dominic M Maggio
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurological Surgery, University of Virginia School of Medicine, Charlottesville, VA 22908, USA.
- Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institute of Heath, Bethesda, MD 20824, USA.
| | - Amanpreet Singh
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - J Bryan Iorgulescu
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Drew H Bleicher
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Mousumi Ghosh
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Michael M Lopez
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Luis M Tuesta
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
| | - Govinder Flora
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - W Dalton Dietrich
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Cell Biology and Anatomy, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Damien D Pearse
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Bruce W. Carter Department of Veterans Affairs Medical Center, Miami, FL 33136, USA.
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18
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Myers SA, Bankston AN, Burke DA, Ohri SS, Whittemore SR. Does the preclinical evidence for functional remyelination following myelinating cell engraftment into the injured spinal cord support progression to clinical trials? Exp Neurol 2016; 283:560-72. [PMID: 27085393 DOI: 10.1016/j.expneurol.2016.04.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 02/08/2023]
Abstract
This article reviews all historical literature in which rodent-derived myelinating cells have been engrafted into the contused adult rodent spinal cord. From 2500 initial PubMed citations identified, human cells grafts, bone mesenchymal stem cells, olfactory ensheathing cells, non-myelinating cell grafts, and rodent grafts into hemisection or transection models were excluded, resulting in the 67 studies encompassed in this review. Forty five of those involved central nervous system (CNS)-derived cells, including neural stem progenitor cells (NSPCs), neural restricted precursor cells (NRPs) or oligodendrocyte precursor cells (OPCs), and 22 studies involved Schwann cells (SC). Of the NSPC/NPC/OPC grafts, there was no consistency with respect to the types of cells grafted and/or the additional growth factors or cells co-grafted. Enhanced functional recovery was reported in 31/45 studies, but only 20 of those had appropriate controls making conclusive interpretation of the remaining studies impossible. Of those 20, 19 were properly powered and utilized appropriate statistical analyses. Ten of those 19 studies reported the presence of graft-derived myelin, 3 reported evidence of endogenous remyelination or myelin sparing, and 2 reported both. For the SC grafts, 16/21 reported functional improvement, with 11 having appropriate cellular controls and 9/11 using proper statistical analyses. Of those 9, increased myelin was reported in 6 studies. The lack of consistency and replication among these preclinical studies are discussed with respect to the progression of myelinating cell transplantation therapies into the clinic.
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Affiliation(s)
- Scott A Myers
- 511 S. Floyd St., MDR 623, Kentucky Spinal Cord Injury Research Center and Department of Neurological Surgery, University of Louisville, School of Medicine, Louisville, KY 40202, USA
| | - Andrew N Bankston
- 511 S. Floyd St., MDR 623, Kentucky Spinal Cord Injury Research Center and Department of Neurological Surgery, University of Louisville, School of Medicine, Louisville, KY 40202, USA
| | - Darlene A Burke
- 511 S. Floyd St., MDR 623, Kentucky Spinal Cord Injury Research Center and Department of Neurological Surgery, University of Louisville, School of Medicine, Louisville, KY 40202, USA
| | - Sujata Saraswat Ohri
- 511 S. Floyd St., MDR 623, Kentucky Spinal Cord Injury Research Center and Department of Neurological Surgery, University of Louisville, School of Medicine, Louisville, KY 40202, USA
| | - Scott R Whittemore
- 511 S. Floyd St., MDR 623, Kentucky Spinal Cord Injury Research Center and Department of Neurological Surgery, University of Louisville, School of Medicine, Louisville, KY 40202, USA.
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19
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Feisst V, Meidinger S, Locke MB. From bench to bedside: use of human adipose-derived stem cells. STEM CELLS AND CLONING-ADVANCES AND APPLICATIONS 2015; 8:149-62. [PMID: 26586955 PMCID: PMC4636091 DOI: 10.2147/sccaa.s64373] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Since the discovery of adipose-derived stem cells (ASC) in human adipose tissue nearly 15 years ago, significant advances have been made in progressing this promising cell therapy tool from the laboratory bench to bedside usage. Standardization of nomenclature around the different cell types used is finally being adopted, which facilitates comparison of results between research groups. In vitro studies have assessed the ability of ASC to undergo mesenchymal differentiation as well as differentiation along alternate lineages (transdifferentiation). Recently, focus has shifted to the immune modulatory and paracrine effects of transplanted ASC, with growing interest in the ASC secretome as a source of clinical effect. Bedside use of ASC is advancing alongside basic research. An increasing number of safety-focused Phase I and Phase IIb trials have been published without identifying any significant risks or adverse events in the short term. Phase III trials to assess efficacy are currently underway. In many countries, regulatory frameworks are being developed to monitor their use and assure their safety. As many trials rely on ASC injected at a distant site from the area of clinical need, strategies to improve the homing and efficacy of transplanted cells are also being explored. This review highlights each of these aspects of the bench-to-bedside use of ASC and summarizes their clinical utility across a variety of medical specialties.
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Affiliation(s)
- Vaughan Feisst
- Dunbar Laboratory, School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Sarah Meidinger
- Dunbar Laboratory, School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Michelle B Locke
- Department of Surgery, Faculty of Medicine and Health Sciences, The University of Auckland, Auckland, New Zealand
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20
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Sabapathy V, Tharion G, Kumar S. Cell Therapy Augments Functional Recovery Subsequent to Spinal Cord Injury under Experimental Conditions. Stem Cells Int 2015; 2015:132172. [PMID: 26240569 PMCID: PMC4512598 DOI: 10.1155/2015/132172] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 02/04/2015] [Accepted: 02/05/2015] [Indexed: 02/06/2023] Open
Abstract
The spinal cord injury leads to enervation of normal tissue homeostasis ultimately leading to paralysis. Until now there is no proper cure for the treatment of spinal cord injury. Recently, cell therapy in animal spinal cord injury models has shown some progress of recovery. At present, clinical trials are under progress to evaluate the efficacy of cell transplantation for the treatment of spinal cord injury. Different types of cells such as pluripotent stem cells derived neural cells, mesenchymal stromal cells, neural stem cells, glial cells are being tested in various spinal cord injury models. In this review we highlight both the advances and lacuna in the field of spinal cord injury by discussing epidemiology, pathophysiology, molecular mechanism, and various cell therapy strategies employed in preclinical and clinical injury models and finally we discuss the limitations and ethical issues involved in cell therapy approach for treating spinal cord injury.
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Affiliation(s)
- Vikram Sabapathy
- Centre for Stem Cell Research, Christian Medical College, Bagayam, Vellore, Tamil Nadu 632002, India
| | - George Tharion
- Department of Physical Medicine and Rehabilitation, Christian Medical College, Vellore, Tamil Nadu 632002, India
| | - Sanjay Kumar
- Centre for Stem Cell Research, Christian Medical College, Bagayam, Vellore, Tamil Nadu 632002, India
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21
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Walthers CM, Seidlits SK. Gene delivery strategies to promote spinal cord repair. Biomark Insights 2015; 10:11-29. [PMID: 25922572 PMCID: PMC4395076 DOI: 10.4137/bmi.s20063] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/02/2015] [Accepted: 03/04/2015] [Indexed: 12/21/2022] Open
Abstract
Gene therapies hold great promise for the treatment of many neurodegenerative disorders and traumatic injuries in the central nervous system. However, development of effective methods to deliver such therapies in a controlled manner to the spinal cord is a necessity for their translation to the clinic. Although essential progress has been made to improve efficiency of transgene delivery and reduce the immunogenicity of genetic vectors, there is still much work to be done to achieve clinical strategies capable of reversing neurodegeneration and mediating tissue regeneration. In particular, strategies to achieve localized, robust expression of therapeutic transgenes by target cell types, at controlled levels over defined time periods, will be necessary to fully regenerate functional spinal cord tissues. This review summarizes the progress over the last decade toward the development of effective gene therapies in the spinal cord, including identification of appropriate target genes, improvements to design of genetic vectors, advances in delivery methods, and strategies for delivery of multiple transgenes with synergistic actions. The potential of biomaterials to mediate gene delivery while simultaneously providing inductive scaffolding to facilitate tissue regeneration is also discussed.
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22
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Liu C, Huang Y, Pang M, Yang Y, Li S, Liu L, Shu T, Zhou W, Wang X, Rong L, Liu B. Tissue-engineered regeneration of completely transected spinal cord using induced neural stem cells and gelatin-electrospun poly (lactide-co-glycolide)/polyethylene glycol scaffolds. PLoS One 2015; 10:e0117709. [PMID: 25803031 PMCID: PMC4372351 DOI: 10.1371/journal.pone.0117709] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 12/29/2014] [Indexed: 12/31/2022] Open
Abstract
Tissue engineering has brought new possibilities for the treatment of spinal cord injury. Two important components for tissue engineering of the spinal cord include a suitable cell source and scaffold. In our study, we investigated induced mouse embryonic fibroblasts (MEFs) directly reprogrammed into neural stem cells (iNSCs), as a cell source. Three-dimensional (3D) electrospun poly (lactide-co-glycolide)/polyethylene glycol (PLGA-PEG) nanofiber scaffolds were used for iNSCs adhesion and growth. Cell growth, survival and proliferation on the scaffolds were investigated. Scanning electron microscopy (SEM) and nuclei staining were used to assess cell growth on the scaffolds. Scaffolds with iNSCs were then transplanted into transected rat spinal cords. Two or 8 weeks following transplantation, immunofluorescence was performed to determine iNSC survival and differentiation within the scaffolds. Functional recovery was assessed using the Basso, Beattie, Bresnahan (BBB) Scale. Results indicated that iNSCs showed similar morphological features with wild-type neural stem cells (wt-NSCs), and expressed a variety of neural stem cell marker genes. Furthermore, iNSCs were shown to survive, with the ability to self-renew and undergo neural differentiation into neurons and glial cells within the 3D scaffolds in vivo. The iNSC-seeded scaffolds restored the continuity of the spinal cord and reduced cavity formation. Additionally, iNSC-seeded scaffolds contributed to functional recovery of the spinal cord. Therefore, PLGA-PEG scaffolds seeded with iNSCs may serve as promising supporting transplants for repairing spinal cord injury (SCI).
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Affiliation(s)
- Chang Liu
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Yong Huang
- Department of Breast & Thyroid Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Mao Pang
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Yang Yang
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Shangfu Li
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Linshan Liu
- Department of Biochemistry, University of California, Los Angeles, California 90095-1569, United States of America
| | - Tao Shu
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Wei Zhou
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Xuan Wang
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Limin Rong
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
| | - Bin Liu
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, People's Republic of China
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23
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Schroeder J, Kueper J, Leon K, Liebergall M. Stem cells for spine surgery. World J Stem Cells 2015; 7:186-194. [PMID: 25621119 PMCID: PMC4300930 DOI: 10.4252/wjsc.v7.i1.186] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/08/2014] [Accepted: 10/29/2014] [Indexed: 02/06/2023] Open
Abstract
In the past few years, stem cells have become the focus of research by regenerative medicine professionals and tissue engineers. Embryonic stem cells, although capable of differentiating into cell lineages of all three germ layers, are limited in their utilization due to ethical issues. In contrast, the autologous harvest and subsequent transplantation of adult stem cells from bone marrow, adipose tissue or blood have been experimentally utilized in the treatment of a wide variety of diseases ranging from myocardial infarction to Alzheimer’s disease. The physiologic consequences of stem cell transplantation and its impact on functional recovery have been studied in countless animal models and select clinical trials. Unfortunately, the bench to bedside translation of this research has been slow. Nonetheless, stem cell therapy has received the attention of spinal surgeons due to its potential benefits in the treatment of neural damage, muscle trauma, disk degeneration and its potential contribution to bone fusion.
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Abstract
Stem cell-based interventions aim to use special regenerative cells (stem cells) to facilitate neuronal function beyond the site of the injury. Many studies involving animal models of spinal cord injury (SCI) suggest that certain stem cell-based therapies may restore function after SCI. Currently, in case of spinal cord injuries, new discoveries with clinical implications have been continuously made in basic stem cell research, and stem cell-based approaches are advancing rapidly toward application in patients. There is a huge base of preclinical evidence in vitro and in animal models which suggests the safety and clinical efficacy of cellular therapies after SCI. Despite this, data from clinical studies is not very encouraging and at times confounding. Here, we have attempted to cover preclinical and clinical evidence base dealing with safety, feasibility and efficacy of cell based interventions after SCI. The limitations of preclinical data and the reasons underlying its failure to translate in a clinical setting are also discussed. Based on the evidence base, it is suggested that a multifactorial approach is required to address this situation. Need for standardized, stringently designed multi-centric clinical trials for obtaining validated proof of evidence is also highlighted.
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Affiliation(s)
- Harvinder Singh Chhabra
- Spine Service, Indian Spinal Injuries Centre, Vasant Kunj, New Delhi, India,Address for correspondence: Dr. Harvinder Singh Chhabra, Indian Spinal Injuries Centre, Sector C, Vasant Kunj, New Delhi - 110 070, India. E-mail:
| | - Kanchan Sarda
- Spine Service, Indian Spinal Injuries Centre, Vasant Kunj, New Delhi, India
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The linear-ordered collagen scaffold-BDNF complex significantly promotes functional recovery after completely transected spinal cord injury in canine. Biomaterials 2014; 41:89-96. [PMID: 25522968 DOI: 10.1016/j.biomaterials.2014.11.031] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/30/2014] [Accepted: 11/08/2014] [Indexed: 12/11/2022]
Abstract
Spinal cord injury (SCI) is still a worldwide clinical challenge for which there is no viable therapeutic method. We focused on developing combinatorial methods targeting the complex pathological process of SCI. In this study, we implanted linear-ordered collagen scaffold (LOCS) fibers with collagen binding brain-derived neurotrophic factor (BDNF) by tagging a collagen-binding domain (CBD) (LOCS + CBD-BDNF) in completely transected canine SCI with multisystem rehabilitation to validate its potential therapeutic effect through a long-term (38 weeks) observation. We found that LOCS + CBD-BDNF implants strikingly promoted locomotion and functional sensory recovery, with some dogs standing unassisted and transiently moving. Further histological analysis showed that administration of LOCS + CBD-BDNF reduced lesion volume, decreased collagen deposits, promoted axon regeneration and improved myelination, leading to functional recovery. Collectively, LOCS + CBD-BDNF showed striking therapeutic effect on completely transected canine SCI model and it is the first time to report such breakthrough in the war with SCI. Undoubtedly, it is a potentially promising therapeutic method for SCI paralysis or other movement disorders caused by neurological diseases in the future.
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Dasari VR, Veeravalli KK, Dinh DH. Mesenchymal stem cells in the treatment of spinal cord injuries: A review. World J Stem Cells 2014; 6:120-133. [PMID: 24772239 PMCID: PMC3999770 DOI: 10.4252/wjsc.v6.i2.120] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 02/19/2014] [Accepted: 03/12/2014] [Indexed: 02/06/2023] Open
Abstract
With technological advances in basic research, the intricate mechanism of secondary delayed spinal cord injury (SCI) continues to unravel at a rapid pace. However, despite our deeper understanding of the molecular changes occurring after initial insult to the spinal cord, the cure for paralysis remains elusive. Current treatment of SCI is limited to early administration of high dose steroids to mitigate the harmful effect of cord edema that occurs after SCI and to reduce the cascade of secondary delayed SCI. Recent evident-based clinical studies have cast doubt on the clinical benefit of steroids in SCI and intense focus on stem cell-based therapy has yielded some encouraging results. An array of mesenchymal stem cells (MSCs) from various sources with novel and promising strategies are being developed to improve function after SCI. In this review, we briefly discuss the pathophysiology of spinal cord injuries and characteristics and the potential sources of MSCs that can be used in the treatment of SCI. We will discuss the progress of MSCs application in research, focusing on the neuroprotective properties of MSCs. Finally, we will discuss the results from preclinical and clinical trials involving stem cell-based therapy in SCI.
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Flora G, Joseph G, Patel S, Singh A, Bleicher D, Barakat DJ, Louro J, Fenton S, Garg M, Bunge MB, Pearse DD. Combining Neurotrophin-Transduced Schwann Cells and Rolipram to Promote Functional Recovery from Subacute Spinal Cord Injury. Cell Transplant 2013; 22:2203-17. [DOI: 10.3727/096368912x658872] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Following spinal cord injury (SCI), both an inhibitory environment and lack of intrinsic growth capacity impede axonal regeneration. In a previous study, prevention of cyclic adenosine monophosphate (AMP) hydrolysis by the phosphodiesterase-4 inhibitor rolipram, in combination with Schwann cell (SC) grafts, promoted significant supraspinal and proprioceptive fiber growth and/or sparing and improved locomotion. In another study, transplanted SCs transduced to generate a bifunctional neurotrophin (D15A) led to significant increases in graft SCs and axons, including supraspinal and myelinated axons. Here we studied the growth and myelination of local and supraspinal axons and functional outcome following the combination of rolipram administration and neurotrophin-transduced SC implantation after SCI. Rolipram was administered subcutaneously for 4 weeks immediately after contusion at vertebral T8 (25.0-mm weight drop, MASCIS impactor). GFP or GFP-D15A-transduced SCs were injected into the injury epicenter 1 week after SCI. GFP-D15A SC grafts and GFP SC grafts with rolipram contained significantly more serotonergic fibers compared to GFP SCs. SC myelinated axons were increased significantly in GFP SC with rolipram-treated animals compared to animals receiving SCI alone. Rolipram administered with either GFP or GFP-D15A SCs significantly increased numbers of brain stem-derived axons below the lesion/implant area and improved hindlimb function. Compared to the single treatments, the combination led to the largest SC grafts, the highest numbers of serotonergic fibers in the grafts, and increased numbers of axons from the reticular formation below the lesion/implant area and provided the greatest improvement in hindlimb function. These findings demonstrate the therapeutic potential for a combination therapy involving the maintenance of cyclic AMP levels and neurotrophin-transduced SCs to repair the subacutely injured spinal cord.
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Affiliation(s)
- Govinder Flora
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Gravil Joseph
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Samik Patel
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Amanpreet Singh
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Drew Bleicher
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - David J. Barakat
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jack Louro
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Stephanie Fenton
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Maneesh Garg
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Mary Bartlett Bunge
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, FL, USA
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Damien D. Pearse
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, USA
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Li J, Lepski G. Cell transplantation for spinal cord injury: a systematic review. BIOMED RESEARCH INTERNATIONAL 2013; 2013:786475. [PMID: 23484157 PMCID: PMC3581246 DOI: 10.1155/2013/786475] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 11/16/2012] [Accepted: 12/11/2012] [Indexed: 02/07/2023]
Abstract
Cell transplantation, as a therapeutic intervention for spinal cord injury (SCI), has been extensively studied by researchers in recent years. A number of different kinds of stem cells, neural progenitors, and glial cells have been tested in basic research, and most have been excluded from clinical studies because of a variety of reasons, including safety and efficacy. The signaling pathways, protein interactions, cellular behavior, and the differentiated fates of experimental cells have been studied in vitro in detail. Furthermore, the survival, proliferation, differentiation, and effects on promoting functional recovery of transplanted cells have also been examined in different animal SCI models. However, despite significant progress, a "bench to bedside" gap still exists. In this paper, we comprehensively cover publications in the field from the last years. The most commonly utilized cell lineages were covered in this paper and specific areas covered include survival of grafted cells, axonal regeneration and remyelination, sensory and motor functional recovery, and electrophysiological improvements. Finally we also review the literature on the in vivo tracking techniques for transplanted cells.
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Affiliation(s)
- Jun Li
- Department of Neurosurgery, Eberhard Karls University, 72076 Tübingen, Germany
- Department of Spine Surgery, The Affiliated Hospital of Luzhou Medical College, 646000 Luzhou, China
| | - Guilherme Lepski
- Department of Neurosurgery, Eberhard Karls University, 72076 Tübingen, Germany
- Division of Neurosurgery, Department of Neurology, Faculdade de Medicina, Universidade de São Paulo, Avnida Dr. Enéas de Carvalho Aguiar 255, 05403-000 São Paulo, SP, Brazil
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Kusiak AN, Selzer ME. Neuroplasticity in the spinal cord. HANDBOOK OF CLINICAL NEUROLOGY 2013; 110:23-42. [DOI: 10.1016/b978-0-444-52901-5.00003-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Ryu HH, Kang BJ, Park SS, Kim Y, Sung GJ, Woo HM, Kim WH, Kweon OK. Comparison of mesenchymal stem cells derived from fat, bone marrow, Wharton's jelly, and umbilical cord blood for treating spinal cord injuries in dogs. J Vet Med Sci 2012; 74:1617-30. [PMID: 22878503 DOI: 10.1292/jvms.12-0065] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Previous animal studies have shown that transplantation of mesenchymal stem cells (MSCs) into spinal cord lesions enhances axonal regeneration and promotes functional recovery. We isolated the MSCs derived from fat, bone marrow, Wharton's jelly and umbilical cord blood (UCB) positive for MSC markers and negative for hematopoietic cell markers. Their effects on the regeneration of injured canine spinal cords were compared. Spinal cord injury was induced by balloon catheter compression. Dogs with injured spinal cords were treated with only matrigel or matrigel mixed with each type of MSCs. Olby and modified Tarlov scores, immunohistochemistry, ELISA and Western blot analysis were used to evaluate the therapeutic effects. The different MSC groups showed significant improvements in locomotion at 8 weeks after transplantation (P<0.05). This recovery was accompanied by increased numbers of surviving neuron and neurofilament-positive fibers in the lesion site. Compared to the control, the lesion sizes were smaller, and fewer microglia and reactive astrocytes were found in the spinal cord epicenter of all MSC groups. Although there were no significant differences in functional recovery among the MSCs groups, UCB-derived MSCs (UCSCs) induced more nerve regeneration and anti-inflammation activity (P<0.05). Transplanted MSCs survived for 8 weeks and reduced IL-6 and COX-2 levels, which may have promoted neuronal regeneration in the spinal cord. Our data suggest that transplantation of MSCs promotes functional recovery after SCI. Furthermore, application of UCSCs led to more nerve regeneration, neuroprotection and less inflammation compared to other MSCs.
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Affiliation(s)
- Hak-Hyun Ryu
- Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-742, Korea
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Ghosh M, Tuesta LM, Puentes R, Patel S, Melendez K, El Maarouf A, Rutishauser U, Pearse DD. Extensive cell migration, axon regeneration, and improved function with polysialic acid-modified Schwann cells after spinal cord injury. Glia 2012; 60:979-92. [PMID: 22460918 DOI: 10.1002/glia.22330] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 02/28/2012] [Indexed: 01/07/2023]
Abstract
Schwann cell (SC) implantation after spinal cord injury (SCI) promotes axonal regeneration, remyelination repair, and functional recovery. Reparative efficacy, however, may be limited because of the inability of SCs to migrate outward from the lesion-implant site. Altering SC cell surface properties by overexpressing polysialic acid (PSA) has been shown to promote SC migration. In this study, a SCI contusion model was used to evaluate the migration, supraspinal axon growth support, and functional recovery associated with polysialyltransferase (PST)-overexpressing SCs [PST-green fluorescent protein (GFP) SCs] or controls (GFP SCs). Compared with GFP SCs, which remained confined to the injection site at the injury center, PST-GFP SCs migrated across the lesion:host cord interface for distances of up to 4.4 mm within adjacent host tissue. In addition, with PST-GFP SCs, there was extensive serotonergic and corticospinal axon in-growth within the implants that was limited in the GFP SC controls. The enhanced migration of PST-GFP SCs was accompanied by significant growth of these axons caudal to lesion. Animals receiving PST-GFP SCs exhibited improved functional outcome, both in the open-field and on the gridwalk test, beyond the modest improvements provided by GFP SC controls. This study for the first time demonstrates that a lack of migration by SCs may hinder their reparative benefits and that cell surface overexpression of PSA enhances the ability of implanted SCs to associate with and support the growth of corticospinal axons. These results provide further promise that PSA-modified SCs will be a potent reparative approach for SCI. © 2012 Wiley Periodicals, Inc.
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Affiliation(s)
- Mousumi Ghosh
- Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33101, USA
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Hawryluk GWJ, Mothe A, Wang J, Wang S, Tator C, Fehlings MG. An in vivo characterization of trophic factor production following neural precursor cell or bone marrow stromal cell transplantation for spinal cord injury. Stem Cells Dev 2012; 21:2222-38. [PMID: 22085254 DOI: 10.1089/scd.2011.0596] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cellular transplantation strategies for repairing the injured spinal cord have shown consistent benefit in preclinical models, and human clinical trials have begun. Interactions between transplanted cells and host tissue remain poorly understood. Trophic factor secretion is postulated a primary or supplementary mechanism of action for many transplanted cells, however, there is little direct evidence to support trophin production by transplanted cells in situ. In the present study, trophic factor expression was characterized in uninjured, injured-untreated, injured-treated with transplanted cells, and corresponding control tissue from the adult rat spinal cord. Candidate trophic factors were identified in a literature search, and primers were designed for these genes. We examined in vivo trophin expression in 3 paradigms involving transplantation of either brain or spinal cord-derived neural precursor cells (NPCs) or bone marrow stromal cells (BMSCs). Injury without further treatment led to a significant elevation of nerve growth factor (NGF), leukemia inhibitory factor (LIF), insulin-like growth factor-1 (IGF-1), and transforming growth factor-β1 (TGF-β1), and lower expression of vascular endothelial growth factor isoform A (VEGF-A) and platelet-derived growth factor-A (PDGF-A). Transplantation of NPCs led to modest changes in trophin expression, and the co-administration of intrathecal trophins resulted in significant elevation of the neurotrophins, glial-derived neurotrophic factor (GDNF), LIF, and basic fibroblast growth factor (bFGF). BMSCs transplantation upregulated NGF, LIF, and IGF-1. NPCs isolated after transplantation into the injured spinal cord expressed the neurotrophins, ciliary neurotrophic factor (CNTF), epidermal growth factor (EGF), and bFGF at higher levels than host cord. These data show that trophin expression in the spinal cord is influenced by injury and cell transplantation, particularly when combined with intrathecal trophin infusion. Trophins may contribute to the benefits associated with cell-based repair strategies for spinal cord injury.
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Affiliation(s)
- Gregory W J Hawryluk
- Division of Genetics and Development, Krembil Neuroscience Center, Toronto Western Research Institute, University Health Network, Toronto, Canada
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Ghosh M, Jährling N, Henao MC, Dodt HU, Pearse DD. The Utility of 3D Ultramicroscopy for Evaluating Cellular Therapies After Spinal Cord Injury. Top Spinal Cord Inj Rehabil 2012; 18:73-6. [PMID: 23459000 DOI: 10.1310/sci1801-73] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Cell therapies have shown promise for repairing the injured spinal cord in experimental models and are now being evaluated in clinical trials for the treatment of human spinal cord injury (SCI). To date, experimental evaluation of implanted cell survival, migration, and integration within the injured central nervous system (CNS) of animals has been technically demanding, requiring tissue sectioning, staining, imaging, and manual reconstruction of 2-dimensional (2D) specimens in 3 dimensions (3D). Not only are these histological procedures laborious and fraught with processing artifacts during manual 3D reconstruction, but they are time-intensive. Herein we describe the utility of 3D ultramicroscopy for assessment of cell therapies after SCI, a new state-of-the-art imaging modality in which whole brain and spinal cord samples are optically sectioned to allow evaluation of intact, macroscopic specimens with microscopic resolution.
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Affiliation(s)
- M Ghosh
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine , Miami, Florida , USA
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35
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36
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Yoon C, Tuszynski MH. Frontiers of spinal cord and spine repair: experimental approaches for repair of spinal cord injury. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 760:1-15. [PMID: 23281510 DOI: 10.1007/978-1-4614-4090-1_1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Regeneration of injured CNS neurons was once thought to be an unachievable goal. Most patients with significant damage to the spinal cord suffer from permanently impaired neurological function. A century of research, however, has led to an understanding of multiple factors that limit CNS regeneration and from this knowledge experimental strategies have emerged for enhancing CNS repair. Some of these approaches have undergone human translation. Nevertheless, translating experimental findings to human trials has been more challenging than anticipated. In this chapter, we will review the current state of knowledge regarding central axonal growth failure after injury, and approaches taken to enhance recovery after SCI.
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Affiliation(s)
- Choya Yoon
- Department of Neurosciences, University of California San Diego, La Jolla, California, USA.
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37
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Hawryluk GWJ, Mothe AJ, Chamankhah M, Wang J, Tator C, Fehlings MG. In vitro characterization of trophic factor expression in neural precursor cells. Stem Cells Dev 2011; 21:432-47. [PMID: 22013972 DOI: 10.1089/scd.2011.0242] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In cellular transplantation strategies for repairing the injured central nervous system, interactions between transplanted neural precursor cells (NPCs) and host tissue remain incompletely understood. Although trophins may contribute to the benefits observed, little research has explored this possibility. Candidate trophic factors were identified, and primers were designed for these genes. Template RNA was isolated from 3 NPC sources, and also from bone marrow stromal cells (BMSCs) and embryonic fibroblasts as comparative controls. Quantitative polymerase chain reaction was performed to determine the effect of cell source, passaging, cellular differentiation, and environmental changes on trophin factor expression in NPCs. Results were analyzed with multivariate statistical analyses. NPCs, BMSCs, and fibroblasts each expressed trophic factors in unique patterns. Trophic factor expression was similar among NPCs whether harvested from rat or mouse, brain or spinal cord, or their time in culture. The expression of neurotrophin NT-3, NT-4/5, glial-derived neurotrophic factor, and insulin-like growth factor-1 decreased with time in culture. Induced differentiation of NPCs led to a marked and statistically significant increase in the expression of trophic factors. Culture conditions and environmental changes were also associated with significant changes in trophin expression. These results suggest that trophins could contribute to the benefits associated with transplantation of NPCs as well as BMSCs. Trophic factor expression changes with NPC differentiation and environmental conditions, which could have important implications with regard to their behavior after in vivo transplantation.
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Affiliation(s)
- Gregory W J Hawryluk
- Division of Genetics and Development, Krembil Neuroscience Centre, Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada
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38
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Toft A, Tomé M, Lindsay SL, Barnett SC, Riddell JS. Transplant-mediated repair properties of rat olfactory mucosal OM-I and OM-II sphere-forming cells. J Neurosci Res 2011; 90:619-31. [PMID: 22057888 DOI: 10.1002/jnr.22789] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 07/31/2011] [Accepted: 08/18/2011] [Indexed: 01/28/2023]
Abstract
Olfactory mucosa is a source of cells for transplant-mediated repair of spinal cord injury (SCI) and is currently being assessed in clinical trials. We previously reported that olfactory mucosa can generate two types of sphere-forming cells with stem cell-like properties. Here we have assessed the repair potential of these cells in a rodent SCI model. Sphere-forming cells transplanted into a dorsal column injury integrated with the host spinal cord, filling the injury cavity, but showed no evidence of differentiation in vivo. Moreover, transplants supported robust axonal regeneration, particularly when suspensions of smaller spheres, rather than large aggregates, were transplanted. However, tract-tracing of dorsal column fibers showed that regenerating axons did not extend beyond the transplant. These observations show that undifferentiated olfactory spheres, though capable of supporting axonal regeneration, do not show any advantage over olfactory ensheathing cells isolated from adult olfactory tissue. In addition, olfactory spheres induced a greater astrocytic hypertrophy at the injury site than previously observed for purified olfactory ensheathing cells.
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Affiliation(s)
- Andrew Toft
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
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Hwang DH, Kim HM, Kang YM, Joo IS, Cho CS, Yoon BW, Kim SU, Kim BG. Combination of Multifaceted Strategies to Maximize the Therapeutic Benefits of Neural Stem Cell Transplantation for Spinal Cord Repair. Cell Transplant 2011; 20:1361-79. [DOI: 10.3727/096368910x557155] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Neural stem cells (NSCs) possess therapeutic potentials to reverse complex pathological processes following spinal cord injury (SCI), but many obstacles remain that could not be fully overcome by NSC transplantation alone. Combining complementary strategies might be required to advance NSC-based treatments to the clinical stage. The present study was undertaken to examine whether combination of NSCs, polymer scaffolds, neurotrophin-3 (NT3), and chondroitinase, which cleaves chondroitin sulfate proteoglycans at the interface between spinal cord and implanted scaffold, could provide additive therapeutic benefits. In a rat hemisection model, poly(e-caprolactone) (PCL) was used as a bridging scaffold and as a vehicle for NSC delivery. The PCL scaffolds seeded with F3 NSCs or NT3 overexpressing F3 cells (F3.NT3) were implanted into hemisected cavities. F3.NT3 showed better survival and migration, and more frequently differentiated into neurons and oligodendrocytes than F3 cells. Animals with PCL scaffold containing F3.NT3 cells showed the best locomotor recovery, and motor evoked potentials (MEPs) following transcranial magnetic stimulation were recorded only in PCL-F3.NT3 group in contralateral, but not ipsilateral, hindlimbs. Implantation of PCL scaffold with F3.NT3 cells increased NT3 levels, promoted neuroplasticity, and enhanced remyelination of contralateral white matter. Combining chondroitinase treatment after PCL-F3.NT3 implantation further enhanced cell migration and promoted axonal remodeling, and this was accompanied by augmented locomotor recovery and restoration of MEPs in ipsilateral hindlimbs. We demonstrate that combining multifaceted strategies can maximize the therapeutic benefits of NSC transplantation for SCI. Our results may have important clinical implications for the design of future NSC-based strategies.
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Affiliation(s)
- Dong H. Hwang
- Brain Disease Research Center, Institute of Medical Sciences, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Hyuk M. Kim
- Brain Disease Research Center, Institute of Medical Sciences, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Young M. Kang
- Brain Disease Research Center, Institute of Medical Sciences, Ajou University School of Medicine, Suwon, Republic of Korea
| | - In S. Joo
- Department of Neurology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Chong-Su Cho
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
| | - Byung-Woo Yoon
- Departments of Neurology and Neuroscience Research Center, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Seung U. Kim
- Department of Neurology, University of British Columbia, Vancouver, BC, Canada
- Medical Research Institute, Chungang University School of Medicine, Seoul, Republic of Korea
| | - Byung G. Kim
- Brain Disease Research Center, Institute of Medical Sciences, Ajou University School of Medicine, Suwon, Republic of Korea
- Department of Neurology, Ajou University School of Medicine, Suwon, Republic of Korea
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Novikova LN, Brohlin M, Kingham PJ, Novikov LN, Wiberg M. Neuroprotective and growth-promoting effects of bone marrow stromal cells after cervical spinal cord injury in adult rats. Cytotherapy 2011; 13:873-87. [DOI: 10.3109/14653249.2011.574116] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Cui YF, Xu JC, Hargus G, Jakovcevski I, Schachner M, Bernreuther C. Embryonic stem cell-derived L1 overexpressing neural aggregates enhance recovery after spinal cord injury in mice. PLoS One 2011; 6:e17126. [PMID: 21445247 PMCID: PMC3060805 DOI: 10.1371/journal.pone.0017126] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Accepted: 01/21/2011] [Indexed: 12/26/2022] Open
Abstract
An obstacle to early stem cell transplantation into the acutely injured spinal cord is poor survival of transplanted cells. Transplantation of embryonic stem cells as substrate adherent embryonic stem cell-derived neural aggregates (SENAs) consisting mainly of neurons and radial glial cells has been shown to enhance survival of grafted cells in the injured mouse brain. In the attempt to promote the beneficial function of these SENAs, murine embryonic stem cells constitutively overexpressing the neural cell adhesion molecule L1 which favors axonal growth and survival of grafted and imperiled cells in the inhibitory environment of the adult mammalian central nervous system were differentiated into SENAs and transplanted into the spinal cord three days after compression lesion. Mice transplanted with L1 overexpressing SENAs showed improved locomotor function when compared to mice injected with wild-type SENAs. L1 overexpressing SENAs showed an increased number of surviving cells, enhanced neuronal differentiation and reduced glial differentiation after transplantation when compared to SENAs not engineered to overexpress L1. Furthermore, L1 overexpressing SENAs rescued imperiled host motoneurons and parvalbumin-positive interneurons and increased numbers of catecholaminergic nerve fibers distal to the lesion. In addition to encouraging the use of embryonic stem cells for early therapy after spinal cord injury L1 overexpression in the microenvironment of the lesioned spinal cord is a novel finding in its functions that would make it more attractive for pre-clinical studies in spinal cord regeneration and most likely other diseases of the nervous system.
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Affiliation(s)
- Yi-Fang Cui
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätskrankenhaus Hamburg-Eppendorf, Universität Hamburg, Hamburg, Germany
- Clinical Neurobiology Laboratory, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Jin-Chong Xu
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätskrankenhaus Hamburg-Eppendorf, Universität Hamburg, Hamburg, Germany
| | - Gunnar Hargus
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätskrankenhaus Hamburg-Eppendorf, Universität Hamburg, Hamburg, Germany
| | - Igor Jakovcevski
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätskrankenhaus Hamburg-Eppendorf, Universität Hamburg, Hamburg, Germany
| | - Melitta Schachner
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätskrankenhaus Hamburg-Eppendorf, Universität Hamburg, Hamburg, Germany
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, New Jersey, United States of America
- * E-mail: (MS); (CB)
| | - Christian Bernreuther
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätskrankenhaus Hamburg-Eppendorf, Universität Hamburg, Hamburg, Germany
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- * E-mail: (MS); (CB)
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Coskun C, Avci B, Ocak N, Yalcin M, Dirican M, Savci V. Effect of repeatedly given CDP-choline on cardiovascular and tissue injury in spinal shock conditions: investigation of the acute phase. J Pharm Pharmacol 2011; 62:497-506. [PMID: 20604840 DOI: 10.1211/jpp.62.04.0013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES The protective effect of CDP-choline in spinal cord transection and the mediation of its cardiovascular effects were investigated. METHODS Spinal cords of rats were transected at the T1-T2 levels. CDP-choline (250 mg/kg; intravenous) was administered 2 h and/or 24 h after the injury. KEY FINDINGS Spinal cord transection caused severe tissue damage, decreased mean arterial pressure, heart rate, plasma adrenaline, and noradrenaline but increased plasma vasopressin levels. Repeated CDP-choline treatment attenuated the degree of tissue injury. Administration of CDP-choline at 2 h after transection transiently increased blood pressure and decreased heart rate, while it produced a small decrease in blood pressure and heart rate when it was given at 24 h. Plasma adrenaline levels were higher in the group where CDP-choline was given repeatedly. Plasma noradrenaline and vasopressin levels did not change additionally after CDP-choline injections in all groups. In order to determine if CDP-choline attenuates the oxidative injury induced by transection, we measured blood superoxide dismutase, glutathione peroxidase activity and malondialdehyde levels. Repeated CDP-choline administration decreased blood superoxide dismutase and glutathione peroxidase activity without any effect on malondialdehyde levels. CONCLUSIONS Data indicate that repeated intravenous CDP-choline treatment prevents tissue damage in spinal shock conditions in the acute phase. The cardiovascular effects of the drug do not seem to be responsible for this protection but the drug-induced attenuation of the oxidative stress may play a role.
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Affiliation(s)
- Cenk Coskun
- Department of Pharmacology, Faculty of Medicine, Uludag University, Turkey
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Patel V, Joseph G, Patel A, Patel S, Bustin D, Mawson D, Tuesta LM, Puentes R, Ghosh M, Pearse DD. Suspension matrices for improved Schwann-cell survival after implantation into the injured rat spinal cord. J Neurotrauma 2010; 27:789-801. [PMID: 20144012 DOI: 10.1089/neu.2008.0809] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Trauma to the spinal cord produces endogenously irreversible tissue and functional loss, requiring the application of therapeutic approaches to achieve meaningful restoration. Cellular strategies, in particular Schwann-cell implantation, have shown promise in overcoming many of the obstacles facing successful repair of the injured spinal cord. Here, we show that the implantation of Schwann cells as cell suspensions with in-situ gelling laminin:collagen matrices after spinal-cord contusion significantly enhances long-term cell survival but not proliferation, as well as improves graft vascularization and the degree of axonal in-growth over the standard implantation vehicle, minimal media. The use of a matrix to suspend cells prior to implantation should be an important consideration for achieving improved survival and effectiveness of cellular therapies for future clinical application.
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Affiliation(s)
- Vivek Patel
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, Florida 33101, USA
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Abstract
BM stem cells may have regenerative effects on islet function through angiogenesis. Human islets (100islet equivalent/mL) were cultured alone (control) or co-cultured (experimental group) with whole human BM (1 × 10(6) cells/mL) for 210 days. A protein array measuring angiogenesis factors found upregulated (experimental vs control, day 210) proteins levels of VEGF-a (535 vs 2 pg/mL), PDGF (280.79 vs 0 pg/mL), KGF (939 vs 8 pg/mL), TIMP-1 (4592 vs 4332 pg/mL) and angiogenin (506 vs 97 pg/mL). Lower protein levels of angiopoietin-2 (5 vs 709 pg/mL) were observed. Depletion of pro-angiogenesis factors in co-culture decreased the effects of BM-induced islet vascularization. Depletion of VEGF-a, eKGF and PDGF significantly reduced islet vascularization but individual depletion of KGF and PDGF had less effects overall on vessel formation. BM-induced vascularization showed significant endothelial cell distribution. Islet vascularization was linked to islet growth. A decrease in islet size indicated poor vascularization. Insulin release was evident in the tissues generated from human islet-BM co-culture throughout the entire culture period. Significant increase in insulin (28.66-fold vs control) and glucagon (24.4-fold vs control) gene expression suggest BM can induce endocrine cell regeneration. In conclusion, BM promotes human islet tissue regeneration via regulation of angiogenesis factors.
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Shanbhag MS, Lathia JD, Mughal MR, Francis NL, Pashos N, Mattson MP, Wheatley MA. Neural progenitor cells grown on hydrogel surfaces respond to the product of the transgene of encapsulated genetically engineered fibroblasts. Biomacromolecules 2010; 11:2936-43. [PMID: 20942395 DOI: 10.1021/bm100699q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Engineered tissue strategies for central nervous system (CNS) repair have the potential for localizing treatment using a wide variety of cells or growth factors. However, these strategies are often limited by their ability to address only one aspect of the injury. Here we report the development of a novel alginate construct that acts as a multifunctional tissue scaffold for CNS repair, and as a localized growth factor delivery vehicle. We show that the surface of this alginate construct acts as an optimal growth environment for neural progenitor cell (NPC) attachment, survival, migration, and differentiation. Importantly, we show that tailor-made alginate constructs containing brain-derived neurotrophic factor or neurotrophin-3 differentially direct lineage fates of NPCs and may therefore be useful in treating a wide variety of injuries. It is this potential for directed differentiation of a scaffold prior to implantation at the injury site that we explore here.
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Affiliation(s)
- Mihir S Shanbhag
- School of Biomedical Engineering, Science, and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia Pennsylvania 19104, United States, Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 251 Bayview Boulevard, Suite 100, Baltimore, Maryland 21224-6825, United States, and Department of Pathology and Centre for Brain Repair, University of Cambridge, Cambridge, United Kingdom
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Abstract
Stem cell therapy is a potential treatment for spinal cord injury (SCI), and a variety of different stem cell types have been evaluated in animal models and humans with SCI. No consensus exists regarding the type of stem cell, if any, that will prove to be effective therapeutically. Most data suggest that no single therapy will be sufficient to overcome all the biological complications caused by SCI. Rationales for therapeutic use of stem cells for SCI include replacement of damaged neurons and glial cells, secretion of trophic factors, regulation of gliosis and scar formation, prevention of cyst formation, and enhancement of axon elongation. Most therapeutic approaches that use stem cells involve implantation of these cells into the spinal cord. The attendant risks of stem cell therapy for SCI--including tumor formation, or abnormal circuit formation leading to dysfunction--must be weighed against the potential benefits of this approach. This Review will examine the biological effects of SCI, the opportunities for stem cell treatment, and the types of stem cells that might be used therapeutically. The limited information available on the possible benefits of stem cell therapy to humans will also be discussed.
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Affiliation(s)
- Vibhu Sahni
- MGH-HMS Center for Nervous System Repair, Harvard Medical School, 50 Blossom Street, Boston, MA 02114, USA
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Tewarie RDN, Yu J, Seidel J, Rahiem ST, Hurtado A, Tsui BM, Grotenhuis JA, Pomper MG, Oudega M. Positron Emission Tomography for Serial Imaging of the Contused Adult Rat Spinal Cord. Mol Imaging 2010; 9:7290.2010.00011. [DOI: 10.2310/7290.2010.00011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Affiliation(s)
- Rishi D.S. Nandoe Tewarie
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Jianhua Yu
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Jurgen Seidel
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Sahar T. Rahiem
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Andres Hurtado
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Benjamin M.W. Tsui
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - J. Andre Grotenhuis
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Martin G. Pomper
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Martin Oudega
- From the International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD; Departments of Radiology and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurosurgery, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands; and Departments of Physical Medicine and Rehabilitation and Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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Boido M, Rupa R, Garbossa D, Fontanella M, Ducati A, Vercelli A. Embryonic and adult stem cells promote raphespinal axon outgrowth and improve functional outcome following spinal hemisection in mice. Eur J Neurosci 2009; 30:833-46. [PMID: 19712091 DOI: 10.1111/j.1460-9568.2009.06879.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Spinal cord injury (SCI) often results in permanent neurological deficits below the injury site. Serotonergic raphespinal projections promote functional recovery after SCI, but spontaneous regeneration of most severed axons is limited by the glial cyst and scar that form at the lesion site. Stem cell (SC) transplantation offers a promising approach for inducing regeneration through the damaged area. Here we compare the effects of transplantation of embryonic neural precursors (NPs) or adult mesenchymal SCs, both of which are potential candidates for SC therapy. The spinal cord was hemisected at the L2 neuromer in adult mice. Two weeks post-injury, we transplanted neural precursors or mesenchymal SCs into the cord, caudal to the hemisection. Injured mice without a graft served as controls. Mice were tested for functional recovery on a battery of motor tasks, then killed and analysed for survival of grafted cells, for effects of engraftment on the local cellular environment and for the sprouting of serotonergic axons. Both types of SCs survived and were integrated into the host tissue, but only the NPs expressed neuronal markers. All transplanted animals displayed an increased number of serotonin-positive fibres caudal to the hemisection, compared with untreated mice. And both cell types led to improved motor performance. These results point to a therapeutic potential for such cell grafting.
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Affiliation(s)
- Marina Boido
- Department of Anatomy, Pharmacology and Forensic Medicine, Torino, Italy.
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Tatar I, Chou PCT, Desouki MM, El Sayed H, Bilgen M. Evaluating regional blood spinal cord barrier dysfunction following spinal cord injury using longitudinal dynamic contrast-enhanced MRI. BMC Med Imaging 2009; 9:10. [PMID: 19519898 PMCID: PMC2714086 DOI: 10.1186/1471-2342-9-10] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2008] [Accepted: 06/11/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In vivo preclinical imaging of spinal cord injury (SCI) in rodent models provides clinically relevant information in translational research. This paper uses multimodal magnetic resonance imaging (MRI) to investigate neurovascular pathology and changes in blood spinal cord barrier (BSCB) permeability following SCI in a mouse model of SCI. METHODS C57BL/6 female mice (n = 5) were subjected to contusive injury at the thoracic T11 level and scanned on post injury days 1 and 3 using anatomical, dynamic contrast-enhanced (DCE-MRI) and diffusion tensor imaging (DTI). The injured cords were evaluated postmortem with histopathological stains specific to neurovascular changes. A computational model was implemented to map local changes in barrier function from the contrast enhancement. The area and volume of spinal cord tissue with dysfunctional barrier were determined using semi-automatic segmentation. RESULTS Quantitative maps derived from the acquired DCE-MRI data depicted the degree of BSCB permeability variations in injured spinal cords. At the injury sites, the damaged barriers occupied about 70% of the total cross section and 48% of the total volume on day 1, but the corresponding measurements were reduced to 55% and 25%, respectively on day 3. These changes implied spatio-temporal remodeling of microvasculature and its architecture in injured SC. Diffusion computations included longitudinal and transverse diffusivities and fractional anisotropy index. Comparison of permeability and diffusion measurements indicated regions of injured cords with dysfunctional barriers had structural changes in the form of greater axonal loss and demyelination, as supported by histopathologic assessments. CONCLUSION The results from this study collectively demonstrated the feasibility of quantitatively mapping regional BSCB dysfunction in injured cord in mouse and obtaining complementary information about its structural integrity using in vivo DCE-MRI and DTI protocols. This capability is expected to play an important role in characterizing the neurovascular changes and reorganization following SCI in longitudinal preclinical experiments, but with potential clinical implications.
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Affiliation(s)
- Ilkan Tatar
- Preclinical Imaging in Translational Research Laboratory, Radiology and Radiological Science, Medical University of South Carolina, 169 Ashley Avenue, Charleston, SC 29425, USA.
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Abstract
The human central nervous system (CNS) is the most complex organ in nature, composed of ten trillion cells forming complex neural networks using a quadrillion synaptic connections. Proteins, their modifications, and their interactions are integral to CNS function. The emerging field of neuroproteomics provides us with a wide-scope view of posttranslation protein dynamics within the CNS to better our understanding of its function, and more often, its dysfunction consequent to neurodegenerative disorders. This chapter reviews methodology employed in the neurosciences to study the neuroproteome in health and disease. The chapter layout parallels this volume's four parts. Part I focuses on modeling human neuropathology in animals as surrogate, accessible, and controllable platforms in our research. Part II discusses methodology used to focus analysis onto a subneuroproteome. Part III reviews analytical and bioinformatic technologies applied in neuroproteomics. Part IV discusses clinical neuroproteomics, from processing of human biofluids to translation in biomarkers research. Neuroproteomics continues to mature as a discipline, confronting the extreme complexity of the CNS proteome and its dynamics, and providing insight into the molecular mechanisms underlying how our nervous system works and how it is compromised by injury and disease.
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