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Ferreira H, Amorim D, Lima AC, Pirraco RP, Costa-Pinto AR, Almeida R, Almeida A, Reis RL, Pinto-Ribeiro F, Neves NM. A biocompatible and injectable hydrogel to boost the efficacy of stem cells in neurodegenerative diseases treatment. Life Sci 2021; 287:120108. [PMID: 34717909 DOI: 10.1016/j.lfs.2021.120108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 01/03/2023]
Abstract
AIMS Stem cell therapies emerged as treatment modalities with potential to cure neurodegenerative diseases (NDs). However, despite high expectations, their clinical use is still limited. Critical issues in treatment outcomes may be related to stem cells formulation and administration route. We develop a hydrogel as a cell carrier, consisting of compounds (phospholipids and hyaluronic acid-HA) naturally present in the central nervous system (CNS). The HA-based hydrogel physically crosslinked with liposomes is designed for direct injection into the CNS to significantly increase the bone marrow mesenchymal stem cells (BMSCs) bioavailability. MATERIALS AND METHODS Hydrogel compatibility is confirmed in vitro with BMSCs and in vivo through its intracerebroventricular injection in rats. To assess its efficacy, the main cause of chronic neurologic disability in young adults is selected, namely multiple sclerosis (MS). The efficacy of the developed formulation containing a lower number of cells than previously reported is demonstrated using an experimental autoimmune encephalomyelitis (EAE) rat model. KEY FINDINGS The distribution of the engineered hydrogel into corpus callosum can be ideal for NDs treatment, since damage of this white matter structure is responsible for important neuronal deficits. Moreover, the BMSCs-laden hydrogel significantly decreases disease severity and maximum clinical score and eliminated the relapse. SIGNIFICANCE The engineering of advanced therapies using this natural carrier can result in efficacious treatments for MS and related debilitating conditions.
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Affiliation(s)
- Helena Ferreira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| | - Diana Amorim
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; Life and Health Sciences Research Institute, School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Ana Cláudia Lima
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rogério P Pirraco
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Ana Rita Costa-Pinto
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui Almeida
- Neurosurgery Department, Hospital de Braga, Braga, Portugal
| | - Armando Almeida
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; Life and Health Sciences Research Institute, School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Filipa Pinto-Ribeiro
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; Life and Health Sciences Research Institute, School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Nuno M Neves
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
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Choi BY, Jeong JH, Eom JW, Koh JY, Kim YH, Suh SW. A Novel Zinc Chelator, 1H10, Ameliorates Experimental Autoimmune Encephalomyelitis by Modulating Zinc Toxicity and AMPK Activation. Int J Mol Sci 2020; 21:ijms21093375. [PMID: 32397660 PMCID: PMC7247014 DOI: 10.3390/ijms21093375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 11/24/2022] Open
Abstract
Previous studies in our lab revealed that chemical zinc chelation or zinc transporter 3 (ZnT3) gene deletion suppresses the clinical features and neuropathological changes associated with experimental autoimmune encephalomyelitis (EAE). In addition, although protective functions are well documented for AMP-activated protein kinase (AMPK), paradoxically, disease-promoting effects have also been demonstrated for this enzyme. Recent studies have demonstrated that AMPK contributes to zinc-induced neurotoxicity and that 1H10, an inhibitor of AMPK, reduces zinc-induced neuronal death and protects against oxidative stress, excitotoxicity, and apoptosis. Here, we sought to evaluate the therapeutic efficacy of 1H10 against myelin oligodendrocyte glycoprotein 35-55-induced EAE. 1H10 (5 μg/kg) was intraperitoneally injected once per day for the entire experimental course. Histological evaluation was performed three weeks after the initial immunization. We found that 1H10 profoundly reduced the severity of the induced EAE and that there was a remarkable suppression of demyelination, microglial activation, and immune cell infiltration. 1H10 also remarkably inhibited EAE-associated blood-brain barrier (BBB) disruption, MMP-9 activation, and aberrant synaptic zinc patch formation. Furthermore, the present study showed that long-term treatment with 1H10 also reduced the clinical course of EAE. Therefore, the present study suggests that zinc chelation and AMPK inhibition with 1H10 may have great therapeutic potential for the treatment of multiple sclerosis.
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Affiliation(s)
- Bo Young Choi
- Department of Physiology, Hallym University College of Medicine, Chuncheon 24252, Korea; (B.Y.C.); (J.H.J.)
| | - Jeong Hyun Jeong
- Department of Physiology, Hallym University College of Medicine, Chuncheon 24252, Korea; (B.Y.C.); (J.H.J.)
| | - Jae-Won Eom
- Department of Molecular Biology, Sejong University, Seoul 05006, Korea; (J.-W.E.); (Y.-H.K.)
| | - Jae-Young Koh
- Department of Neurology, University of Ulsan College of Medicine, Seoul 138-736, Korea;
| | - Yang-Hee Kim
- Department of Molecular Biology, Sejong University, Seoul 05006, Korea; (J.-W.E.); (Y.-H.K.)
| | - Sang Won Suh
- Department of Physiology, Hallym University College of Medicine, Chuncheon 24252, Korea; (B.Y.C.); (J.H.J.)
- Correspondence: ; Tel.: +82-10-8573-6364
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Fan H, Li D, Guan X, Yang Y, Yan J, Shi J, Ma R, Shu Q. MsrA Suppresses Inflammatory Activation of Microglia and Oxidative Stress to Prevent Demyelination via Inhibition of the NOX2-MAPKs/NF-κB Signaling Pathway. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:1377-1389. [PMID: 32308370 PMCID: PMC7147623 DOI: 10.2147/dddt.s223218] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 02/20/2020] [Indexed: 12/17/2022]
Abstract
Introduction Demyelination causes neurological deficits involving visual, motor, sensory symptoms. Deregulation of several enzymes has been identified in demyelination, which holds potential for the development of treatment strategies for demyelination. However, the specific effect of methionine sulfoxide reductase A (MsrA) on demyelination remains unclear. Hence, this study aims to explore the effect of MsrA on oxidative stress and inflammatory response of microglia in demyelination. Methods Initially, we established a mouse model with demyelination induced by cuprizone and a cell model provoked by lipopolysaccharide (LPS). The expression of MsrA in wild-type (WT) and MsrA-knockout (MsrA-/-) mice were determined by RT-qPCR and Western blot analysis. In order to further explore the function of MsrA on inflammatory response, and oxidative stress in demyelination, we detected the expression of microglia marker Iba1, inflammatory factors TNF-α and IL-1β and intracellular reactive oxygen species (ROS), superoxide dismutase (SOD) activity, as well as expression of the NOX2-MAPKs/NF-κB signaling pathway-related genes in MsrA-/- mice and LPS-induced microglia following different treatments. Results MsrA expression was downregulated in MsrA-/- mice. MsrA silencing was shown to produce severely injured motor coordination, increased expressions of Iba1, TNF-α, IL-1β, ROS and NOX2, and extent of ERK, p38, IκBα, and p65 phosphorylation, but reduced SOD activity. Conjointly, our study suggests that Tat-MsrA fusion protein can prevent the cellular inflammatory response and subsequent demyelination through negative regulation of the NOX2-MAPKs/NF-κB signaling pathway. Conclusion Our data provide a profound insight on the role of endogenous antioxidative defense systems such as MsrA in controlling microglial function.
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Affiliation(s)
- Hua Fan
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Damiao Li
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Xinlei Guan
- Department of Pharmacy, Wuhan Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yanhui Yang
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Junqiang Yan
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Jian Shi
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Ranran Ma
- Department of Pharmacy, Ninth Hospital of Xi'an, Affiliated to Medical College of Xi'an Jiaotong University, Xi'an 710054, People's Republic of China
| | - Qing Shu
- Department of Pharmacy, Ninth Hospital of Xi'an, Affiliated to Medical College of Xi'an Jiaotong University, Xi'an 710054, People's Republic of China
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Oliveira AG, Gonçalves M, Ferreira H, M Neves N. Growing evidence supporting the use of mesenchymal stem cell therapies in multiple sclerosis: A systematic review. Mult Scler Relat Disord 2019; 38:101860. [PMID: 31765999 DOI: 10.1016/j.msard.2019.101860] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/29/2019] [Accepted: 11/16/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Multiple sclerosis (MS) typically arises in early/middle adulthood and is characterized by a progressive disability of the central nervous system (CNS). Currently approved therapies do not promote tissue repair or stop disease progression. Emerging data demonstrate that stem cells present a great potential in regenerative medicine and, consequently, have also been widely investigated as a potential treatment for MS. Therefore, the aim of this study was to conduct a systematic review to inquire into the safety, tolerability, and efficacy of mesenchymal stem cells (MSCs) therapies in MS. METHODS Three electronic databases (Web of Science, PubMed, and Cochrane) were searched from April until June 2019. Clinical trials or case reports with information related to the effects of MSC therapies in MS patients were considered for this review. RESULTS 10 manuscripts were selected, namely 7 uncontrolled clinical trials, 2 randomized controlled clinical trials, and 1 case report. The overall quality of the studies was considered good. Besides minor adverse events (AEs), it was reported one case of encephalopathy with seizures and two cases of iatrogenic meningitis, which were not related to the treatment, but with the administration route. The analyses of the expanded disability status scale (EDSS) in the uncontrolled clinical trials demonstrated that 48 patients improved, 39 maintained and 16 worsened their clinical condition. Regarding the randomized studies, one did not show statistically significant variations in the mean EDSS score and in the other the mean EDSS score was statistically significantly lower for the experimental group. The case report also showed an improvement in the EDSS score. CONCLUSIONS MSCs transplantation proved to be a safe and tolerable therapy. Their potential therapeutic benefits were also validated. However, larger placebo controlled blinded clinical trials will be required to establish the long term safety and efficacy profile of these therapies for MS. Their translation into the clinical practice can provide a new hope for the patients of this highly debilitating disease.
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Affiliation(s)
| | - Margarida Gonçalves
- Medicine School, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - Helena Ferreira
- 3B's Research Group, I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães 4805-017, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães, Portugal.
| | - Nuno M Neves
- 3B's Research Group, I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães 4805-017, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães, Portugal; The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, Barco, Guimarães 4805-017, Portugal.
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Taherian M, Mahin Samadi P, Rastegar H, Faramarzi MA, Rostami-Nejad M, Yazdi MH, Rezaei-Tavirani M, Yazdi Z. An Overview on Probiotics as an Alternative Strategy for Prevention and Treatment of Human Diseases. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2019; 18:31-50. [PMID: 32802088 PMCID: PMC7393061 DOI: 10.22037/ijpr.2020.112232.13620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Probiotics are viable and useful microorganisms, which are beneficial factors for human and animal health by altering their microbial flora. Most of the probiotics belong to a large group of bacteria in the human gastrointestinal tract. There are several clinical shreds of evidence that show anti-carcinogenic effects of probiotics through altering digestive enzymes, inhibition of carcinogenic agents, and modulating the immune responses in experimental animals. Many studies have been performed to evaluate the potential effectiveness of probiotics in treating or preventing neurological diseases such as MS and novel treatment modality for T1D. The purpose of this study is to have an overview on probiotic microorganisms and to review the previous researches on the effects of probiotics on health through currently available literatures. The study was performed using following keywords; Probiotics, Cancer, Immune system, Multiple Sclerosis (MS) and Diabetes mellitus. PubMed/Medline, Clinicaltrials.gov, Ovid, Google Scholar, and Reaxcys databases used to find the full text of related articles. According to the current available data on probiotics and related health-promoting benefits, it seems that, consumption of probiotics can lead to the prevention and reduction the risk of cancer, diabetes, and multiple sclerosis. Although for the better and more decisive conclusion, there is a need to larger sample size clinical studies with more focus on the safety of these biological agents and their possible beneficial effects on different population.
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Affiliation(s)
- Mahdi Taherian
- Food and Drug Laboratory Research Center, Iran Food and Drug Organization (FDO), Ministry of Health and Medical Education (MOH), Tehran, Iran.
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Pariya Mahin Samadi
- Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Hossein Rastegar
- Food and Drug Cosmetic Research Center, Iran Food and Drug Organization (FDO), Ministry of Health and Medical Education (MOH), Tehran, Iran.
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology and Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mohammad Rostami-Nejad
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mohammad Hossein Yazdi
- Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
- Recombinant Vaccine Research Center, Tehran University of Medical Sciences, Tehran, Iran.
- Evidence-based Evaluation of Cost-Effectiveness and Clinical Outcomes, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.
| | - Mostafa Rezaei-Tavirani
- Proteomics Research Center, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Zeinab Yazdi
- Department of Medicine and epidemiology, School of veterinary Medicine, University of California, Davis, USA.
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Xu W, Sachewsky N, Azimi A, Hung M, Gappasov A, Morshead CM. Myelin Basic Protein Regulates Primitive and Definitive Neural Stem Cell Proliferation from the Adult Spinal Cord. Stem Cells 2016; 35:485-496. [PMID: 27573615 DOI: 10.1002/stem.2488] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 06/29/2016] [Accepted: 07/29/2016] [Indexed: 11/07/2022]
Abstract
The adult mammalian forebrain comprises two distinct populations of neural stem cells (NSCs): rare, Oct4 positive, primitive NSCs (pNSCs) and definitive NSC (dNSC) which are more abundant and express GFAP. The pNSCs are upstream of the dNSCs in the neural stem cell lineage. Herein we show that pNSC and dNSC populations can also be isolated from the developing and adult spinal cord. Spinal cord derived pNSCs are similarly rare, Oct4 expressing cells that are responsive to leukemia inhibitory factor and dNSCs are 4-5X more abundant and express GFAP. We demonstrate that myelin basic protein (MBP) is inhibitory to both pNSC and dNSC derived colony formation. Similar to what is seen in the adult forebrain following injury, spinal cord injury results in a significant increase in the size of the dNSC and pNSC pools. Hence, both primitive and definitive neural stem cells can be isolated from along the embryonic and adult neuraxis in vivo and their behavior is regulated by MBP and injury. Stem Cells 2017;35:485-496.
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Affiliation(s)
- Wenjun Xu
- Department of Surgery, University of Toronto, Toronto, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Canada
| | - Nadia Sachewsky
- Department of Surgery, University of Toronto, Toronto, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Canada
| | - Ashkan Azimi
- Department of Surgery, University of Toronto, Toronto, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Canada
| | - Maurita Hung
- Department of Surgery, University of Toronto, Toronto, Canada
| | - Andrew Gappasov
- Department of Surgery, University of Toronto, Toronto, Canada
| | - Cindi M Morshead
- Department of Surgery, University of Toronto, Toronto, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Canada.,Institute of Biomaterial and Biomedical Engineering, University of Toronto, Toronto, Canada
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A therapeutic strategy for spinal cord defect: human dental follicle cells combined with aligned PCL/PLGA electrospun material. BIOMED RESEARCH INTERNATIONAL 2015; 2015:197183. [PMID: 25695050 PMCID: PMC4324737 DOI: 10.1155/2015/197183] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 11/07/2014] [Accepted: 11/13/2014] [Indexed: 02/05/2023]
Abstract
Stem cell implantation has been utilized for the repair of spinal cord injury; however, it shows unsatisfactory performance in repairing large scale lesion of an organ. We hypothesized that dental follicle cells (DFCs), which possess multipotential capability, could reconstruct spinal cord defect (SCD) in combination with biomaterials. In the present study, mesenchymal and neurogenic lineage characteristics of human DFCs (hDFCs) were identified. Aligned electrospun PCL/PLGA material (AEM) was fabricated and it would not lead to cytotoxic reaction; furthermore, hDFCs could stretch along the oriented fibers and proliferate efficiently on AEM. Subsequently, hDFCs seeded AEM was transplanted to restore the defect in rat spinal cord. Functional observation was performed but results showed no statistical significance. The following histologic analyses proved that AEM allowed nerve fibers to pass through, and implanted hDFCs could express oligodendrogenic lineage maker Olig2 in vivo which was able to contribute to remyelination. Therefore, we concluded that hDFCs can be a candidate resource in neural regeneration. Aligned electrospun fibers can support spinal cord structure and induce cell/tissue polarity. This strategy can be considered as alternative proposals for the SCD regeneration studies.
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Abbaszadeh HA, Tiraihi T, Delshad A, Saghedizadeh M, Taheri T, Kazemi H, Hassoun HK. Differentiation of neurosphere-derived rat neural stem cells into oligodendrocyte-like cells by repressing PDGF-α and Olig2 with triiodothyronine. Tissue Cell 2014; 46:462-9. [PMID: 25200619 DOI: 10.1016/j.tice.2014.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 07/22/2014] [Accepted: 08/11/2014] [Indexed: 12/31/2022]
Abstract
One of the approaches for treating demyelination diseases is cytotherapy, and adult stem cells are potential sources. In this investigation, we tried to increase the yield of oligodendrocyte-like cells (OLCs) by inducing neural stem cells generated from BMSCs-derived neurospheres, which were used for deriving the neural stem cells (NSCs). The latter were induced into OLCs by heregulin, PDGF-AA, bFGF and triiodothyronine (T3). The BMSCs, NS, NSCs and OLCs were characterized by using immunocytochemistry for fibronectin, CD44, CD90, CD45, Oct-4, O4, Olig2, O1 and MBP markers. PDGF receptor α (PDGFR-α), Olig2 and MOG expression were evaluated by RT-PCR. The BMSCs expressed CD44, CD90, CD106 and Oct-4; the NSCs were immunoreactive to nestin and neurofilament 68. Incubation of the NSCs for 4 days with heregulin, PDGF-AA and bFGF resulted in their induction into oligodendrocyte progenitor-like cells (OPLCs), which immunoreacted to O4, Olig2 and O1, while Olig2 and PDGFR-α were detected by RT-PCR. Replacing heregulin, PDGF-AA and bFGF with T3 for 6 days resulted in repression of O4, O1, Olig2 and PDGFR-α. The OLCs were co-cultured with motoneurons resulted in induction of MOG and MBP, which were expressed in functional OLCs. The latter can be generated from BMSCs-derive NS with high yield.
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Affiliation(s)
- Hojjat-Allah Abbaszadeh
- Department of Anatomical Sciences, School of Medical Sciences, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
| | - Taki Tiraihi
- Department of Anatomical Sciences, School of Medical Sciences, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran; Shefa Neurosciences Research Center, Khatam Al-Anbia Hospital, Tehran, Iran.
| | | | - Majid Saghedizadeh
- Department of genetics, School of Basic Sciences, Tarbiat Modares University, Tehran, Iran
| | - Taher Taheri
- Shefa Neurosciences Research Center, Khatam Al-Anbia Hospital, Tehran, Iran
| | - Hadi Kazemi
- Shefa Neurosciences Research Center, Khatam Al-Anbia Hospital, Tehran, Iran
| | - Hayder K Hassoun
- Middle Euphrates Neuroscience Center, Kufa University,College of Medicine, Annajaf Al-Ashraf, Iraq
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Disease Modifying Therapy in Multiple Sclerosis. INTERNATIONAL SCHOLARLY RESEARCH NOTICES 2014; 2014:307064. [PMID: 27355035 PMCID: PMC4897446 DOI: 10.1155/2014/307064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 05/07/2014] [Accepted: 05/07/2014] [Indexed: 01/09/2023]
Abstract
Multiple sclerosis is an autoimmune disease of the central nervous system characterized by inflammatory demyelination and axonal degeneration. It is the commonest cause of permanent disability in young adults. Environmental and genetic factors have been suggested in its etiology. Currently available disease modifying drugs are only effective in controlling inflammation but not prevention of neurodegeneration or accumulation of disability. Search for an effective neuroprotective therapy is at the forefront of multiple sclerosis research.
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Plemel JR, Keough MB, Duncan GJ, Sparling JS, Yong VW, Stys PK, Tetzlaff W. Remyelination after spinal cord injury: Is it a target for repair? Prog Neurobiol 2014; 117:54-72. [DOI: 10.1016/j.pneurobio.2014.02.006] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 02/15/2014] [Accepted: 02/20/2014] [Indexed: 12/12/2022]
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Abbaszadeh HA, Tiraihi T, Delshad AR, Saghedi Zadeh M, Taheri T. Bone marrow stromal cell transdifferentiation into oligodendrocyte-like cells using triiodothyronine as a inducer with expression of platelet-derived growth factor α as a maturity marker. IRANIAN BIOMEDICAL JOURNAL 2014; 17:62-70. [PMID: 23567847 DOI: 10.6091/ibj.11162.2013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The present study investigated the functional maturity of oligodendrocyte derived from rat bone marrow stromal cells (BMSC). METHODS The BMSC were isolated from female Sprague-Dawley rats and evaluated for different markers, such as fibronectin, CD106, CD90, Oct-4 and CD45. Transdifferentiation of OLC from BMSC was obtained by exposing the BMSC to DMSO and 1 µM all-trans-retinoic acid during the pre-induction stage and then induced by heregulin (HRG), platelet-derived growth factor AA (PDGFR-alpha), fibroblast growth factor and T3. The neuroprogenitor cells (NPC) were evaluated for nestin, neurofilament 68, neurofilament 160 and glial fibrillary acidic protein gene expression using immunocytochemistry. The OLC were assessed by immunocytochemistry for O4, oligo2, O1 and MBP marker and gene expression of PDGFR-alpha was examined by RT-PCR. RESULTS Our results showed that the fibronectin, CD106, CD90, CD45 and Oct-4 were expressed after the fourth passage. Also, the yield of OLC differentiation was about 71% when using the O1, O4 and oligo2 markers. Likewise, the expression of PDGFR-alpha in pre-oligodendrocytes was noticed, while MBP expression was detected in oligodendrocyte after 6 days of the induction. CONCLUSION The conclusion of the study showed that BMSC can be induced to transdifferentiate into mature OLC.
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Affiliation(s)
- Hojjat-Allah Abbaszadeh
- Dept. of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Taki Tiraihi
- Dept. of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.,Shefa Neurosciences Research Center, Khatam Al-Anbia Hospital, Tehran, Iran
| | | | - Majid Saghedi Zadeh
- Dept. of Genetics, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, Iran
| | - Taher Taheri
- Shefa Neurosciences Research Center, Khatam Al-Anbia Hospital, Tehran, Iran
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Adenosine A1 receptor agonist, N6-cyclohexyladenosine, protects myelin and induces remyelination in an experimental model of rat optic chiasm demyelination; electrophysiological and histopathological studies. J Neurol Sci 2013; 325:22-8. [DOI: 10.1016/j.jns.2012.11.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2012] [Revised: 10/23/2012] [Accepted: 11/14/2012] [Indexed: 12/20/2022]
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14
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Larson CA, Dension PM. Effectiveness of intense, activity-based physical therapy for individuals with spinal cord injury in promoting motor and sensory recovery: is olfactory mucosa autograft a factor? J Spinal Cord Med 2013; 36:44-57. [PMID: 23433335 PMCID: PMC3555107 DOI: 10.1179/2045772312y.0000000026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND/OBJECTIVES Rehabilitation for individuals with spinal cord injury (SCI) is expanding to include intense, activity-based, out-patient physical therapy (PT). The study's primary purposes were to (i) examine the effectiveness of intense PT in promoting motor and sensory recovery in individuals with SCI and (ii) compare recovery for individuals who had an olfactory mucosa autograft (OMA) with individuals who did not have the OMA while both groups participated in the intense PT program. METHODS Prospective, non-randomized, non-blinded, intervention study. Using the American Spinal Injury Association examination, motor and sensory scores for 23 (7 OMA, 6 matched control and 10 other) participants were recorded. RESULTS Mean therapy dosage was 137.3 total hours. The participants' total, upper and lower extremity motor scores improved significantly while sensory scores did not improve during the first 60 days and from initial to discharge examination. Incomplete SCI or paraplegia was associated with greater motor recovery. Five of 14 participants converted from motor-complete to motor-incomplete SCI. Individuals who had the OMA and participated in intense PT did not have greater sensory or greater magnitude or rate of motor recovery as compared with participants who had intense PT alone. CONCLUSION This study provides encouraging evidence as to the effectiveness of intense PT for individuals with SCI. Future research is needed to identify the optimal therapy dosage and specific therapeutic activities required to generate clinically meaningful recovery for individuals with SCI including those who elect to undergo a neural recovery/regenerative surgical procedure and those that elect intense therapy alone.
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Affiliation(s)
- Cathy A. Larson
- Rehabilitation Institute of Michigan, Center for Spinal Cord Injury Recovery, Detroit, MI, USA; and Oakland University Physical Therapy program, Rochester, MI, USA,Correspondence to: Cathy A. Larson PT, PhD, University of Michigan-Flint, Physical Therapy Program, 303 E. Kearsley Street, 2157 WSW, Flint, MI 48502, USA.
| | - Paula M. Dension
- Rehabilitation Institute of Michigan, Center for Spinal Cord Injury Recovery, Detroit, MI, USA
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15
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Reduced EGFR signaling in progenitor cells of the adult subventricular zone attenuates oligodendrogenesis after demyelination. ACTA ACUST UNITED AC 2012; 3:209-20. [PMID: 18634612 DOI: 10.1017/s1740925x08000082] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Neural progenitor cells that express the NG2 proteoglycan are present in different regions of the adult mammalian brain where they display distinct morphologies and proliferative rates. In the developing postnatal and adult mouse, NG2(+) cells represent a major cell population of the subventricular zone (SVZ). NG2(+) cells divide in the anterior and lateral region of the SVZ, and are stimulated to proliferate and migrate out of the SVZ by focal demyelination of the corpus callosum (CC). Many NG2(+) cells are labeled by GFP-retrovirus injection into the adult SVZ, demonstrating that NG2(+) cells actively proliferate under physiological conditions and after demyelination. Under normal physiological conditions and after focal demyelination, proliferation of NG2(+) cells is significantly attenuated in wa2 mice, which are characterized by reduced signaling of the epidermal growth factor receptor (EGFR). This results in reduced SVZ-to-lesion migration of NG2(+) cells and oligodendrogenesis in the lesion. Expression of vascular endothelial growth factor (VEGF) and EGFR ligands, such as heparin binding-EGF and transforming growth factor alpha, is upregulated in the SVZ after focal demyelination of the CC. EGF-induced oligodendrogenesis and myelin protein expression in wild-type SVZ cells in culture are significantly attenuated in wa2 SVZ cells. Our results demonstrate that the response of NG2(+) cells in the SVZ and their subsequent differentiation in CC after focal demyelination depend on EGFR signaling.
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Zhang YJ, Zhang W, Lin CG, Ding Y, Huang SF, Wu JL, Li Y, Dong H, Zeng YS. Neurotrophin-3 gene modified mesenchymal stem cells promote remyelination and functional recovery in the demyelinated spinal cord of rats. J Neurol Sci 2012; 313:64-74. [DOI: 10.1016/j.jns.2011.09.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2010] [Revised: 09/14/2011] [Accepted: 09/20/2011] [Indexed: 01/01/2023]
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17
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Kaka GR, Tiraihi T, Delshad A, Arabkheradmand J, Kazemi H. In vitro differentiation of bone marrow stromal cells into oligodendrocyte-like cells using triiodothyronine as inducer. Int J Neurosci 2012; 122:237-47. [PMID: 22115181 DOI: 10.3109/00207454.2011.642037] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
An in vitro technique was devised to induced autologous adult stem cells into oligodendrocyte-like cells. In this study, a protocol was developed for the induction of bone marrow stromal cells (BMSCs) into oligodendrocyte-like cells. BMSCs were incubated in one of these three pre-inducers: dimethyl sulfoxide (DMSO), β-mercaptoethanol (βME) or biotylated hydroxyanisol (BHA), each followed by retinoic acid (RA) treatment. The percentage of viable cells in BHA-RA preinduced cells was significantly lower than the others. The results showed that the preinduced cells were immunoreactive for nestin and NF-68; among the mentioned protocols, the immunoreactivity yielded by following the DMSO-RA protocol was significantly higher than the others. Moreover, no significant immunoreactivity was observed for preinduced cells to O4, O1, MBP (myelin basic protein), S100, and GFAP (glial fibrillary acidic protein). The cells were immunoreactive to oligo-2. Two phases of induction were done: the first was a combination of basic fibroblast growth factor (bFGF), platelet-derived growth factor (PDGF) and heregulin (HRG), followed by either triiodothyronine (T3) or Forskolin (FSK) as the second phase. The conclusion is that the trans-differentiation of BMSCs by DMSO followed by RA (preinduction stage) then bFGF-PDGF-HRG followed by T3 (10 ng/ml) (induction stage) can be a potential source for oligodendrocyte-like cells preparation.
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Affiliation(s)
- Gholam Reza Kaka
- Department of Anatomical Sciences, Faculty of medical Sciences, Tarbiat Modares, Tehran, Iran
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18
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Sakai K, Yamamoto A, Matsubara K, Nakamura S, Naruse M, Yamagata M, Sakamoto K, Tauchi R, Wakao N, Imagama S, Hibi H, Kadomatsu K, Ishiguro N, Ueda M. Human dental pulp-derived stem cells promote locomotor recovery after complete transection of the rat spinal cord by multiple neuro-regenerative mechanisms. J Clin Invest 2011; 122:80-90. [PMID: 22133879 DOI: 10.1172/jci59251] [Citation(s) in RCA: 237] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 10/12/2011] [Indexed: 12/21/2022] Open
Abstract
Spinal cord injury (SCI) often leads to persistent functional deficits due to loss of neurons and glia and to limited axonal regeneration after injury. Here we report that transplantation of human dental pulp stem cells into the completely transected adult rat spinal cord resulted in marked recovery of hind limb locomotor functions. Transplantation of human bone marrow stromal cells or skin-derived fibroblasts led to substantially less recovery of locomotor function. The human dental pulp stem cells exhibited three major neuroregenerative activities. First, they inhibited the SCI-induced apoptosis of neurons, astrocytes, and oligodendrocytes, which improved the preservation of neuronal filaments and myelin sheaths. Second, they promoted the regeneration of transected axons by directly inhibiting multiple axon growth inhibitors, including chondroitin sulfate proteoglycan and myelin-associated glycoprotein, via paracrine mechanisms. Last, they replaced lost cells by differentiating into mature oligodendrocytes under the extreme conditions of SCI. Our data demonstrate that tooth-derived stem cells may provide therapeutic benefits for treating SCI through both cell-autonomous and paracrine neuroregenerative activities.
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Affiliation(s)
- Kiyoshi Sakai
- Department of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Aravamudhan S, Bellamkonda RV. Toward a Convergence of Regenerative Medicine, Rehabilitation, and Neuroprosthetics. J Neurotrauma 2011; 28:2329-47. [DOI: 10.1089/neu.2010.1542] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Shyam Aravamudhan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, Georgia
| | - Ravi V. Bellamkonda
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, Georgia
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20
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Gonzalez-Perez O, Alvarez-Buylla A. Oligodendrogenesis in the subventricular zone and the role of epidermal growth factor. BRAIN RESEARCH REVIEWS 2011; 67:147-56. [PMID: 21236296 PMCID: PMC3109119 DOI: 10.1016/j.brainresrev.2011.01.001] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/04/2011] [Accepted: 01/05/2011] [Indexed: 01/18/2023]
Abstract
Demyelinating diseases are characterized by an extensive loss of oligodendrocytes and myelin sheaths from axolemma. These neurological disorders are a common cause of disability in young adults, but so far, there is no effective treatment against them. It has been suggested that neural stem cells (NSCs) may play an important role in brain repair therapies. NSCs in the adult subventricular zone (SVZ), also known as Type-B cells, are multipotential cells that can self-renew and give rise to neurons and glia. Recent findings have shown that cells derived from SVZ Type-B cells actively respond to epidermal-growth-factor (EGF) stimulation becoming highly migratory and proliferative. Interestingly, a subpopulation of these EGF-activated cells expresses markers of oligodendrocyte precursor cells (OPCs). When EGF administration is removed, SVZ-derived OPCs differentiate into myelinating and pre-myelinating oligodendrocytes in the white matter tracts of corpus callosum, fimbria fornix and striatum. In the presence of a demyelinating lesion, OPCs derived from EGF-stimulated SVZ progenitors contribute to myelin repair. Given their high migratory potential and their ability to differentiate into myelin-forming cells, SVZ NSCs represent an important endogenous source of OPCs for preserving the oligodendrocyte population in the white matter and for the repair of demyelinating injuries.
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Affiliation(s)
- Oscar Gonzalez-Perez
- Laboratory of Neuroscience, School of Psychology, University of Colima, Colima, Colima 28040, Mexico.
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21
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Myelin Restoration: Progress and Prospects for Human Cell Replacement Therapies. Arch Immunol Ther Exp (Warsz) 2011; 59:179-93. [DOI: 10.1007/s00005-011-0120-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Accepted: 11/17/2010] [Indexed: 12/12/2022]
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22
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Valproate reduces CHOP levels and preserves oligodendrocytes and axons after spinal cord injury. Neuroscience 2011; 178:33-44. [DOI: 10.1016/j.neuroscience.2011.01.012] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Revised: 01/05/2011] [Accepted: 01/06/2011] [Indexed: 01/12/2023]
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23
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Tracy ET, Zhang CY, Gentry T, Shoulars KW, Kurtzberg J. Isolation and expansion of oligodendrocyte progenitor cells from cryopreserved human umbilical cord blood. Cytotherapy 2011; 13:722-9. [PMID: 21341973 DOI: 10.3109/14653249.2011.553592] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND AIMS Oligodendrocyte precursor cells (OPC) hold promise as a cellular therapy for demyelinating diseases. The feasibility of using OPC-based therapies in humans depends upon a reliable, readily available source. We have previously described the isolation, expansion and characterization of oligodendrocyte-like cells from fresh human umbilical cord blood (UCB). We now describe the isolation and expansion of OPC from thawed, cryopreserved UCB. METHODS We thawed cryopreserved UCB units employing a standard clinical protocol, then isolated and plated mononuclear cells under previously established culture conditions. All OPC cultures were trypsinized at 21 days, counted, then characterized by flow cytometry after fixation, permeablization and labeling with the following antibodies: anti-oligodendrocyte marker 4 (O4), anti-oligodendrocyte marker 1 (O1) and anti-myelin basic protein (MBP). OPC were also placed in co-culture with shiverer mouse neuronal cells then stained in situ for beta tubulin III (BT3) and MBP as a functional assay of myelination. RESULTS The average OPC yield per cryopreserved UCB unit was 64% of that seen with fresh UCB. On flow cytometric analysis, 74% of thawed UCB units yielded cells with an O4-expression level of at least 20% of total events, compared with 95% of fresh UCB units. We observed myelination of shiverer neurons in our functional assay, which could be used as a potency assay for release of OPC cells in phase I human clinical trials. CONCLUSIONS Our results demonstrate that OPC can be derived reliably from thawed, cryopreserved UCB units, and support the feasibility of using these cells in human clinical trials.
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Affiliation(s)
- Elisabeth T Tracy
- Pediatric Blood and Marrow Transplant Program, Duke University Medical Center, Durham, North Carolina 27710, USA
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24
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Muja N, Cohen ME, Zhang J, Kim H, Gilad AA, Walczak P, Ben-Hur T, Bulte JWM. Neural precursors exhibit distinctly different patterns of cell migration upon transplantation during either the acute or chronic phase of EAE: a serial MR imaging study. Magn Reson Med 2011; 65:1738-49. [PMID: 21305597 DOI: 10.1002/mrm.22757] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Revised: 10/22/2010] [Accepted: 11/18/2010] [Indexed: 11/10/2022]
Abstract
As the complex pathogenesis of multiple sclerosis contributes to spatiotemporal variations in the trophic micromilieu of the central nervous system, the optimal intervention period for cell-replacement therapy must be systematically defined. We applied serial, 3D high-resolution magnetic resonance imaging to transplanted neural precursor cells (NPCs) labeled with superparamagnetic iron oxide nanoparticles and 5-bromo-2-deoxyuridine, and compared the migration pattern of NPCs in acute inflamed (n = 10) versus chronic demyelinated (n = 9) brains of mice induced with experimental allergic encephalomyelitis (EAE). Serial in vivo and ex-vivo 3D magnetic resonance imaging revealed that NPCs migrated 2.5 ± 1.3 mm along the corpus callosum in acute EAE. In chronic EAE, cell migration was slightly reduced (2.3 ± 1.3 mm) and only occurred in the lateral side of transplantation. Surprisingly, in 6/10 acute EAE brains, NPCs were found to migrate in a radial pattern along RECA-1(+) cortical blood vessels, in a pattern hitherto only reported for migrating glioblastoma cells. This striking radial biodistribution pattern was not detected in either chronic EAE or disease-free control brains. In both acute and chronic EAE brain, Iba1(+) microglia/macrophage number was significantly higher in central nervous system regions containing migrating NPCs. The existence of differential NPC migration patterns is an important consideration for implementing future translational studies in multiple sclerosis patients with variable disease.
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Affiliation(s)
- Naser Muja
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205-2195, USA
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25
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Gonzalez-Perez O, Romero-Rodriguez R, Soriano-Navarro M, Garcia-Verdugo JM, Alvarez-Buylla A. Epidermal growth factor induces the progeny of subventricular zone type B cells to migrate and differentiate into oligodendrocytes. Stem Cells 2010; 27:2032-43. [PMID: 19544429 DOI: 10.1002/stem.119] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
New neurons and oligodendrocytes are continuously produced in the subventricular zone (SVZ) of adult mammalian brains. Under normal conditions, the SVZ primary precursors (type B1 cells) generate type C cells, most of which differentiate into neurons, with a small subpopulation giving rise to oligodendrocytes. Epidermal growth factor (EGF) signaling induces dramatic proliferation and migration of SVZ progenitors, a process that could have therapeutic applications. However, the fate of cells derived from adult neural stem cells after EGF stimulation remains unknown. Here, we specifically labeled SVZ B1 cells and followed their progeny after a 7-day intraventricular infusion of EGF. Cells derived from SVZ B1 cells invaded the parenchyma around the SVZ into the striatum, septum, corpus callosum, and fimbria-fornix. Most of these B1-derived cells gave rise to cells in the oligodendrocyte lineage, including local NG2+ progenitors, and pre-myelinating and myelinating oligodendrocytes. SVZ B1 cells also gave rise to a population of highly-branched S100beta+/glial fibrillary acidic protein (GFAP)+ cells in the striatum and septum, but no neuronal differentiation was observed. Interestingly, when demyelination was induced in the corpus callosum by a local injection of lysolecithin, an increased number of cells derived from SVZ B1 cells and stimulated to migrate and proliferate by EGF infusion differentiated into oligodendrocytes at the lesion site. This work indicates that EGF infusion can greatly expand the number of progenitors derived from the SVZ primary progenitors which migrate and differentiate into oligodendroglial cells. This expanded population could be used for the repair of white matter lesions.
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Affiliation(s)
- Oscar Gonzalez-Perez
- Department of Neurological Surgery, Brain Tumor Research Center, Institute for Regeneration Medicine, University of California, San Francisco, California, USA
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26
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Lee YJ, Hung SC, Chu MS. Involvement of Notch1 inhibition in serum-stimulated glia and oligodendrocyte differentiation from human mesenchymal stem cells. STEM CELLS AND CLONING-ADVANCES AND APPLICATIONS 2010; 3:165-73. [PMID: 24198522 PMCID: PMC3781741 DOI: 10.2147/sccaa.s14388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The use of in vitro oligodendrocyte differentiation for transplantation of stem cells to treat demyelinating diseases is an important consideration. In this study, we investigated the effects of serum on glia and oligodendrocyte differentiation from human mesenchymal stem cells (KP-hMSCs). We found that serum deprivation resulted in a reversible downregulation of glial- and oligodendrocyte-specific markers. Serum stimulated expression of oligodendrocyte markers, such as galactocerebroside, as well as Notch1 and JAK1 transcripts. Inhibition of Notch1 activation by the Notch inhibitor, MG132, led to enhanced expression of a serum-stimulated oligodendrocyte marker. This marker was undetectable in serum-deprived KP-hMSCs treated with MG132, suggesting that inhibition of Notch1 function is additive to serum-stimulated oligodendrocyte differentiation. Furthermore, a dominant-negative mutant RBP-J protein also inhibited Notch1 function and led to upregulation of oligodendrocyte-specific markers. Our results demonstrate that serum-stimulated oligodendrocyte differentiation is enhanced by the inhibition of Notch1-associated functions.
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Affiliation(s)
- Yi-Jang Lee
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, Taiwan
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27
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Barhum Y, Gai-Castro S, Bahat-Stromza M, Barzilay R, Melamed E, Offen D. Intracerebroventricular transplantation of human mesenchymal stem cells induced to secrete neurotrophic factors attenuates clinical symptoms in a mouse model of multiple sclerosis. J Mol Neurosci 2009; 41:129-37. [PMID: 19902385 DOI: 10.1007/s12031-009-9302-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Accepted: 10/08/2009] [Indexed: 01/14/2023]
Abstract
Stem cell-based therapy holds great potential for future treatment of multiple sclerosis (MS). Bone marrow mesenchymal stem cells (MSCs) were previously reported to ameliorate symptoms in mouse MS models (experimental autoimmune encephalomyelitis, EAE). In this study, we induced MSCs to differentiate in vitro into neurotrophic factor-producing cells (NTFCs). Our main goal was to examine the clinical use of NTFCs on EAE symptoms. The NTFCs and MSCs were transplanted intracerebroventricularly (ICV) to EAE mice. We found that NTFCs transplantations resulted in a delay of symptom onset and increased animal survival. Transplantation of MSCs also exerted a positive effect but to a lesser extent. In vitro analysis demonstrated the NTFCs' capacity to suppress mice immune cells and protect neuronal cells from oxidative insult. Our results indicate that NTFCs-transplanted ICV delay disease symptoms of EAE mice, possibly via neuroprotection and immunomodulation, and may serve as a possible treatment to MS.
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Affiliation(s)
- Yael Barhum
- Felsenstein Medical Research Center, Tel Aviv University, Sackler School of Medicine, Petach Tikva, 49100, Israel
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28
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Sareen D, McMillan E, Ebert AD, Shelley BC, Johnson JA, Meisner LF, Svendsen CN. Chromosome 7 and 19 trisomy in cultured human neural progenitor cells. PLoS One 2009; 4:e7630. [PMID: 19898616 PMCID: PMC2765070 DOI: 10.1371/journal.pone.0007630] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Accepted: 09/25/2009] [Indexed: 01/07/2023] Open
Abstract
Background Stem cell expansion and differentiation is the foundation of emerging cell therapy technologies. The potential applications of human neural progenitor cells (hNPCs) are wide ranging, but a normal cytogenetic profile is important to avoid the risk of tumor formation in clinical trials. FDA approved clinical trials are being planned and conducted for hNPC transplantation into the brain or spinal cord for various neurodegenerative disorders. Although human embryonic stem cells (hESCs) are known to show recurrent chromosomal abnormalities involving 12 and 17, no studies have revealed chromosomal abnormalities in cultured hNPCs. Therefore, we investigated frequently occurring chromosomal abnormalities in 21 independent fetal-derived hNPC lines and the possible mechanisms triggering such aberrations. Methods and Findings While most hNPC lines were karyotypically normal, G-band karyotyping and fluorescent in situ hybridization (FISH) analyses revealed the emergence of trisomy 7 (hNPC+7) and trisomy 19 (hNPC+19), in 24% and 5% of the lines, respectively. Once detected, subsequent passaging revealed emerging dominance of trisomy hNPCs. DNA microarray and immunoblotting analyses demonstrate epidermal growth factor receptor (EGFR) overexpression in hNPC+7 and hNPC+19 cells. We observed greater levels of telomerase (hTERT), increased proliferation (Ki67), survival (TUNEL), and neurogenesis (βIII-tubulin) in hNPC+7 and hNPC+19, using respective immunocytochemical markers. However, the trisomy lines underwent replicative senescence after 50–60 population doublings and never showed neoplastic changes. Although hNPC+7 and hNPC+19 survived better after xenotransplantation into the rat striatum, they did not form malignant tumors. Finally, EGF deprivation triggered a selection of trisomy 7 cells in a diploid hNPC line. Conclusions We report that hNPCs are susceptible to accumulation of chromosome 7 and 19 trisomy in long-term cell culture. These results suggest that micro-environmental cues are powerful factors in the selection of specific hNPC aneuploidies, with trisomy of chromosome 7 being the most common. Given that a number of stem cell based clinical trials are being conducted or planned in USA and a recent report in PLoS Medicine showing the dangers of grafting an inordinate number of cells, these data substantiate the need for careful cytogenetic evaluation of hNPCs (fetal or hESC-derived) before their use in clinical or basic science applications.
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Affiliation(s)
- Dhruv Sareen
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Wisconsin Institutes for Medical Research (WIMR), Madison, Wisconsin, United States of America
- The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Erin McMillan
- The Waisman Center, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Allison D. Ebert
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Wisconsin Institutes for Medical Research (WIMR), Madison, Wisconsin, United States of America
- The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Brandon C. Shelley
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Wisconsin Institutes for Medical Research (WIMR), Madison, Wisconsin, United States of America
- The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Julie A. Johnson
- Cell Line Genetics, LLC, Madison, Wisconsin, United States of America
| | | | - Clive N. Svendsen
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Wisconsin Institutes for Medical Research (WIMR), Madison, Wisconsin, United States of America
- The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin, United States of America
- * E-mail:
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29
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Sher F, van Dam G, Boddeke E, Copray S. Bioluminescence Imaging of Olig2-Neural Stem Cells Reveals Improved Engraftment in a Demyelination Mouse Model. Stem Cells 2009; 27:1582-91. [DOI: 10.1002/stem.76] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Rao RC, Boyd J, Padmanabhan R, Chenoweth JG, McKay RD. Efficient serum-free derivation of oligodendrocyte precursors from neural stem cell-enriched cultures. Stem Cells 2009; 27:116-25. [PMID: 18403757 DOI: 10.1634/stemcells.2007-0205] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Oligodendrocytes derived in the laboratory from stem cells have been proposed as a treatment for acute and chronic injury to the central nervous system. Platelet-derived growth factor (PDGF) receptor alpha (PDGFRalpha) signaling is known to regulate oligodendrocyte precursor cell numbers both during development and adulthood. Here, we analyze the effects of PDGFRalpha signaling on central nervous system (CNS) stem cell-enriched cultures. We find that AC133 selection for CNS progenitors acutely isolated from the fetal cortex enriches for PDGF-AA-responsive cells. PDGF-AA treatment of fibroblast growth factor 2-expanded CNS stem cell-enriched cultures increases nestin(+) cell number, viability, proliferation, and glycolytic rate. We show that a brief exposure to PDGF-AA rapidly and efficiently permits the derivation of O4(+) oligodendrocyte-lineage cells from CNS stem cell-enriched cultures. The derivation of oligodendrocyte-lineage cells demonstrated here may support the effective use of stem cells in understanding fate choice mechanisms and the development of new therapies targeting this cell type.
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Affiliation(s)
- Rajesh C Rao
- Laboratory of Molecular Biology, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
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31
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Hatch MN, Schaumburg CS, Lane TE, Keirstead HS. Endogenous remyelination is induced by transplant rejection in a viral model of multiple sclerosis. J Neuroimmunol 2009; 212:74-81. [PMID: 19477025 DOI: 10.1016/j.jneuroim.2009.05.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Revised: 04/30/2009] [Accepted: 05/01/2009] [Indexed: 11/28/2022]
Abstract
Human embryonic stem cell-derived oligodendrocyte progenitors (OPCs) were transplanted into mice persistently infected with the neurotropic JHM strain of mouse hepatitis virus with established demyelination. Engrafted cells did not survive past 2 weeks following transplantation despite treatment with high dose cyclosporine A. While T cell infiltration into the CNS was dampened, elevated numbers of macrophage/microglia and endogenous OPCs were evident surrounding the implantation site and this was associated with increased remyelination. These data suggest that remyelination was initiated by the local response to xenograft transplantation. These findings illustrate the complexities of OPC transplantation into areas of robust immune-mediated pathology.
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Affiliation(s)
- Maya N Hatch
- Reeve-Irvine Research Center, Department of Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA 92697-4292, United States
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Chekhonin VP, Gurina OI, Ykhova OV, Ryabinina AE, Tsibulkina EA, Zhirkov YA. Polyethylene glycol-conjugated immunoliposomes specific for olfactory ensheathing glial cells. Bull Exp Biol Med 2009; 145:449-51. [PMID: 19110591 DOI: 10.1007/s10517-008-0115-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A novel immunoliposome delivery system was developed for directed transport into cultured olfactory epithelium cells. Monoclonal antibodies against glial fibrillary acidic protein (GFAP) served as a vector. Fluorescence microscopy showed that the target cells are specifically stained with Dil dye incorporated into liposomal membranes. This transport system holds promise for the delivery of bioactive substances to olfactory epithelial cells and modulation of their capacity to stimulate axonal regeneration.
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Affiliation(s)
- V P Chekhonin
- Laboratory of Immunochemistry, V. P. Serbskii State Research Center of Social and Forensic Psychiatry, Russian Ministry of Health, Russia.
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Abstract
Oligodendrocytes are a type of glial cells that play a critical role in supporting the central nervous system (CNS), in particular insulating axons within the CNS by wrapping them with a myelin sheath, thereby enabling saltatory conduction. They are lost, and myelin damaged - demyelination - in a wide variety of neurological disorders. Replacing depleted cell types within demyelinated areas, however, has been shown experimentally to achieve remyelination and so help restore function. One method to produce oligodendrocytes for cellular replacement therapies is through the use of progenitor or stem cells. The ability to differentiate progenitor or stem cells into high-purity fates not only permits the generation of specific cells for transplantation therapies, but also provides powerful tools for studying cellular mechanisms of development. This chapter outlines methods of generating high-purity OPCs from multipotent neonatal progenitor or human embryonic stem cells.
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Affiliation(s)
- Maya N Hatch
- Department of Anatomy and Neurobiology, Reeve-Irvine Research Center, University of California at Irvine, Irvine, CA, USA
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34
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Cellular remyelinating therapy in multiple sclerosis. J Neurol Sci 2009; 276:1-5. [DOI: 10.1016/j.jns.2008.08.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2008] [Revised: 08/14/2008] [Accepted: 08/19/2008] [Indexed: 11/19/2022]
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Kulbatski I, Mothe AJ, Parr AM, Kim H, Kang CE, Bozkurt G, Tator CH. Glial precursor cell transplantation therapy for neurotrauma and multiple sclerosis. ACTA ACUST UNITED AC 2008; 43:123-76. [PMID: 18706353 DOI: 10.1016/j.proghi.2008.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2008] [Accepted: 04/07/2008] [Indexed: 12/18/2022]
Abstract
Traumatic injury to the brain or spinal cord and multiple sclerosis (MS) share a common pathophysiology with regard to axonal demyelination. Despite advances in central nervous system (CNS) repair in experimental animal models, adequate functional recovery has yet to be achieved in patients in response to any of the current strategies. Functional recovery is dependent, in large part, upon remyelination of spared or regenerating axons. The mammalian CNS maintains an endogenous reservoir of glial precursor cells (GPCs), capable of generating new oligodendrocytes and astrocytes. These GPCs are upregulated following traumatic or demyelinating lesions, followed by their differentiation into oligodendrocytes. However, this innate response does not adequately promote remyelination. As a result, researchers have been focusing their efforts on harvesting, culturing, characterizing, and transplanting GPCs into injured regions of the adult mammalian CNS in a variety of animal models of CNS trauma or demyelinating disease. The technical and logistic considerations for transplanting GPCs are extensive and crucial for optimizing and maintaining cell survival before and after transplantation, promoting myelination, and tracking the fate of transplanted cells. This is especially true in trials of GPC transplantation in combination with other strategies such as neutralization of inhibitors to axonal regeneration or remyelination. Overall, such studies improve our understanding and approach to developing clinically relevant therapies for axonal remyelination following traumatic brain injury (TBI) or spinal cord injury (SCI) and demyelinating diseases such as MS.
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Affiliation(s)
- Iris Kulbatski
- Krembil Neuroscience Centre, Toronto Western Research Institute, 399 Bathurst Street, McLaughlin Pavilion #12-423, Toronto, Ontario, Canada M5T-2S8.
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36
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Duncan ID, Goldman S, Macklin WB, Rao M, Weiner LP, Reingold SC. Stem cell therapy in multiple sclerosis: promise and controversy. Mult Scler 2008; 14:541-6. [DOI: 10.1177/1352458507087324] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Stem cells offer the potential for regeneration of lost tissue in neurological disease, including multiple sclerosis (MS). Their development in vitro and their use in vivo in animal models of degenerative neurological disease and recent first efforts in human clinical trials were the topics of a recent international meeting sponsored by the Multiple Sclerosis International Federation and the National Multiple Sclerosis Society on “Stem Cells & MS: Prospects and Strategies” Participants reviewed the current state of knowledge about the potential use of stem and progenitor cells in MS and other degenerative neurological disorders and outlined a series of urgent fundamental and applied clinical research priorities that should allow the potential of regeneration of damaged tissue in MS to be assessed and pursued.
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Affiliation(s)
- ID Duncan
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - S Goldman
- Department of Neurology, University of Rochester Medical Center, Rochester, New York, USA
| | - WB Macklin
- Department of Neurosciences, The Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - M Rao
- Regenerative Medicine, Invitrogen Corporation, Timonium, Maryland, USA
| | - LP Weiner
- Keck School of Medicine, Department of Neurology, University of Southern California, Los Angeles, California, USA
| | - SC Reingold
- National Multiple Sclerosis Society and Scientific and Clinical Review Associates, LLC, New York City, New York, USA,
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Labeling stem cells in vitro for identification of their differentiated phenotypes after grafting into the CNS. Methods Mol Biol 2008; 438:361-74. [PMID: 18369771 DOI: 10.1007/978-1-59745-133-8_28] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Grafting neural stem cells is a widely used experimental approach to central nervous system (CNS) repair after trauma or neurodegeneration. It is likely to be a realistic clinical therapy for human CNS disorders in the near future. One of the challenges of this approach is the ability to identify both the survival and differentiated phenotype of various stem cell populations after engraftment into the CNS. There is no single protocol that will work for all cell types and all applications. Labeling stem cells for CNS grafting is an empirical process. The type of stem cell, its fate after engraftment, and the context in which it is anatomically and histologically evaluated all contribute to a decision as to the best approach to take. We have provided the range of conditions under which various labels have been successfully used in CNS grafting studies and delineated the parameters that have to be empirically established. Given a clear understanding of the limitations of the respective labels and the expected outcome of the grafting experiment, these labeling guidelines should enable any investigator to develop a successful approach. Our own personal bias is to use labels that cannot be transferred to host cells. Initially, we preferred 5-bromo-2'-deoxyuridine, or retrovirally delivered enhanced green fluorescent protein or lacZ. More recently, we have found syngeneic grafts of human placental alkaline phosphatase stem cells to work very well. However, each investigator will have to decide what is optimal for his or her cell population and experimental design. We summarize the various approaches to labeling and identifying stem cells, pointing out both the limitations and strengths of the various approaches delineated.
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Hemmer B, Hartung HP. Toward the development of rational therapies in multiple sclerosis: what is on the horizon? Ann Neurol 2007; 62:314-26. [DOI: 10.1002/ana.21289] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Zietlow R, Lane EL, Dunnett SB, Rosser AE. Human stem cells for CNS repair. Cell Tissue Res 2007; 331:301-22. [PMID: 17901985 DOI: 10.1007/s00441-007-0488-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2007] [Accepted: 07/25/2007] [Indexed: 12/31/2022]
Abstract
Although most peripheral tissues have at least a limited ability for self-repair, the central nervous system (CNS) has long been known to be relatively resistant to regeneration. Small numbers of stem cells have been found in the adult brain but do not appear to be able to affect any significant recovery following disease or insult. In the last few decades, the idea of being able to repair the brain by introducing new cells to repair damaged areas has become an accepted potential treatment for neurodegenerative diseases. This review focuses on the suitability of various human stem cell sources for such treatments of both slowly progressing conditions, such as Parkinson's disease, Huntington's disease and multiple sclerosis, and acute insult, such as stroke and spinal cord injury. Despite stem cell transplantation having now moved a step closer to the clinic with the first trials of autologous mesenchymal stem cells, the effects shown are moderate and are not yet at the stage of development that can fulfil the hopes that have been placed on stem cells as a means to replace degenerating cells in the CNS. Success will depend on careful investigation in experimental models to enable us to understand not just the practicalities of stem cell use, but also the underlying biological principles.
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Affiliation(s)
- Rike Zietlow
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3US, UK.
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40
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Baron-Van Evercooren A, Lachapelle F, Nait-Oumesmar B, Pham-Dinh D. [Promoting myelin repair in disorders such as multiple sclerosis and some types of leukodystrophy: current studies]. Rev Neurol (Paris) 2007; 163:523-31. [PMID: 17571021 DOI: 10.1016/s0035-3787(07)90459-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Several ways of promoting myelin repair in myelin disorders such as multiple sclerosis and certain types of leukodystrophies are currently being investigated. Numerous studies suggest that it is possible to repair the central nervous system (CNS) by cell transplantation or by enhancing endogenous remyelination. Investigations in animal models indicate that cell therapy results in robust anatomical and functional recovery of acute myelin lesions. These models are also used to explore and validate the role of candidate molecules to stimulate endogenous remyelination by activating the myelin competent population or providing neuroprotection. However, in view of the heterogeneity of the lesion environment in MS, it seems more likely that cell therapy alone will not be able to contribute efficiently to the repair of the lesion. Further developments should indicate whether combining multiple approaches will be more powerful to achieve global myelin repair in the CNS than applying these strategies alone.
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41
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Keyoung HM, Goldman SA. Glial progenitor-based repair of demyelinating neurological diseases. Neurosurg Clin N Am 2007; 18:93-104, x. [PMID: 17244557 DOI: 10.1016/j.nec.2006.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Demyelinating diseases of the brain and spinal cord affect more than one-quarter million of Americans, with numbers reaching more than two million across the world. These patients experience not only the vascular, traumatic, and inflammatory demyelinations of adulthood but the congenital and childhood dysmyelinating syndromes of the pediatric leukodystrophies. Several disease-modifying strategies have been developed that slow disease progression, especially in the inflammatory demyelinations and in multiple sclerosis in particular. Yet, currently available disease modifiers typically influence the immune system and are neither intended to nor competent to reverse the structural neurologic damage attending acquired demyelination. Fortunately, however, the disorders of myelin lend themselves well to attempts at structural repair, because central oligodendrocytes are the primary, and often sole, victims of the underlying disease process. Given the relative availability and homogeneity of human oligodendrocyte progenitor cells, the disorders of myelin formation and maintenance may be especially compelling targets for cell-based neurologic therapy.
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Affiliation(s)
- H Michael Keyoung
- Department of Neurological Surgery, University of California, San Francisco, 505 Parnassus Avenue, M779, PO Box 0470, San Francisco, CA 94143-0470, USA.
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42
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Ishii K, Nakamura M, Dai H, Finn TP, Okano H, Toyama Y, Bregman BS. Neutralization of ciliary neurotrophic factor reduces astrocyte production from transplanted neural stem cells and promotes regeneration of corticospinal tract fibers in spinal cord injury. J Neurosci Res 2007; 84:1669-81. [PMID: 17044031 DOI: 10.1002/jnr.21079] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Transplantation of neural stem cells (NSC) into lesioned spinal cord offers the potential to increase regeneration by replacing lost neurons or oligodendrocytes. The majority of transplanted NSC, however, typically differentiate into astrocytes that may exacerbate glial scar formation. Here we show that blocking of ciliary neurotrophic factor (CNTF) with anti-CNTF antibodies after NSC transplant into spinal cord injury (SCI) resulted in a reduction of glial scar formation by 8 weeks. Treated animals had a wider distribution of transplanted NSC compared with the control animals. The NSC around the lesion coexpressed either nestin or markers for neurons, oligodendrocytes, or astrocytes. Approximately 20% fewer glial fibrillary acidic protein-positive/bromodeoxyuridine (BrdU)-positive cells were seen at 2, 4, and 8 weeks postgrafting, compared with the control animals. Furthermore, more CNPase(+)/BrdU(+) cells were detected in the treated group at 4 and 8 weeks. These CNPase(+) or Rip(+) mature oligodendrocytes were seen in close proximity to host corticospinal tract (CST) and 5HT(+) serotonergic axon. We also demonstrate that the number of regenerated CST fibers both at the lesion and at caudal sites in treated animals was significantly greater than that in the control animals at 8 weeks. We suggest that the blocking of CNTF at the beginning of SCI provides a more favorable environment for the differentiation of transplanted NSC and the regeneration of host axons.
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Affiliation(s)
- Ken Ishii
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC, USA.
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43
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Radtke C, Spies M, Sasaki M, Vogt PM, Kocsis JD. Demyelinating diseases and potential repair strategies. Int J Dev Neurosci 2007; 25:149-53. [PMID: 17408905 PMCID: PMC2692731 DOI: 10.1016/j.ijdevneu.2007.02.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2006] [Revised: 02/16/2007] [Accepted: 02/20/2007] [Indexed: 11/21/2022] Open
Abstract
Demyelination is associated with a number of neurological disorders including multiple sclerosis (MS), spinal cord injury and nerve compression. MS lesions often show axon loss and therefore reparative therapeutic goals include remyelination and neuroprotection of vulnerable axons. Experimental cellular transplantation has proven successful in a number of demyelination and injury models to remyelinate and improve functional outcome. Here we discuss the remyelination and neuroprotective potential of several myelin-forming cells types and their behavior in different demyelination and injury models. Better understanding of these models and current cell-based strategies for remyelination and neuroprotection offer exciting opportunities to develop strategies for clinical studies.
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Affiliation(s)
- C Radtke
- Department of Neurology, Yale University School of Medicine, New Haven, CT 06516, USA
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44
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Ben-Hur T, van Heeswijk RB, Einstein O, Aharonowiz M, Xue R, Frost EE, Mori S, Reubinoff BE, Bulte JWM. Serial in vivo MR tracking of magnetically labeled neural spheres transplanted in chronic EAE mice. Magn Reson Med 2007; 57:164-71. [PMID: 17191231 DOI: 10.1002/mrm.21116] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Neural stem cell (NSC) transplantation has been shown to attenuate the severity of experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS). Central to the future success of NSC transplantation in MS is the ability of transplanted cells to migrate from the site of transplantation to relevant foci of disease. Using magnetically labeled mouse neurospheres and human embryonic stem cell (hESC)-derived neurospheres, we applied serial magnetic resonance imaging (MRI) to assess the biodynamics of transplanted cell migration in a chronic mouse EAE model. Magnetic labeling did not affect the in vitro and in vivo characteristics of cells as multipotential precursors. Cell migration occurred along white matter (WM) tracts (especially the corpus callosum (CC), fimbria, and internal capsule), predominantly early in the acute phase of disease, and in an asymmetric manner. The distance of cell migration correlated well with clinical severity of disease and the number of microglia in the WM tracts, supporting the notion that inflammatory signals promote transplanted cell migration. This study shows for the first time that hESC-derived neural precursors also respond to tissue signals in an MS model, similarly to rodent cells. The results are directly relevant for designing and optimizing cell therapies for MS, and achieving a better understanding of in vivo cell dynamics and cell-tissue interactions.
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MESH Headings
- Animals
- Cell Lineage
- Cell Movement
- Cells, Cultured
- Disease Models, Animal
- Encephalomyelitis, Autoimmune, Experimental/chemically induced
- Encephalomyelitis, Autoimmune, Experimental/physiopathology
- Encephalomyelitis, Autoimmune, Experimental/therapy
- Humans
- Magnetic Resonance Imaging
- Mice
- Mice, Inbred C57BL
- Neurons/cytology
- Neurons/physiology
- Neurons/transplantation
- Severity of Illness Index
- Spheroids, Cellular/cytology
- Spheroids, Cellular/transplantation
- Stem Cell Transplantation
- Transplantation, Heterologous
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Affiliation(s)
- Tamir Ben-Hur
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
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45
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Sasaki M, Li B, Lankford KL, Radtke C, Kocsis JD. Remyelination of the injured spinal cord. PROGRESS IN BRAIN RESEARCH 2007; 161:419-33. [PMID: 17618995 PMCID: PMC2605400 DOI: 10.1016/s0079-6123(06)61030-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Contusive spinal cord injury (SCI) can result in necrosis of the spinal cord, but often long white matter tracts outside of the central necrotic core are demyelinated. One experimental strategy to improve functional outcome following SCI is to transplant myelin-forming cells to remyelinate these axons and improve conduction. This review focuses on transplantation studies using olfactory ensheathing cell (OEC) to improve functional outcome in experimental models of SCI and demyelination. The biology of the OEC, and recent experimental research and clinical studies using OECs as a potential cell therapy candidate are discussed.
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Affiliation(s)
- Masanori Sasaki
- Department of Neurology and Center for Neuroscience and Regeneration Research, Yale University School of Medicine, New Haven, CT 06510, USA
- Rehabilitation Research Center, Veterans Affairs Connecticut Healthcare System, West Haven, CT 06516, USA
| | - Bingcang Li
- Department of Neurology and Center for Neuroscience and Regeneration Research, Yale University School of Medicine, New Haven, CT 06510, USA
- Rehabilitation Research Center, Veterans Affairs Connecticut Healthcare System, West Haven, CT 06516, USA
- Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, P.R. China
| | - Karen L. Lankford
- Department of Neurology and Center for Neuroscience and Regeneration Research, Yale University School of Medicine, New Haven, CT 06510, USA
- Rehabilitation Research Center, Veterans Affairs Connecticut Healthcare System, West Haven, CT 06516, USA
| | - Christine Radtke
- Department of Neurology and Center for Neuroscience and Regeneration Research, Yale University School of Medicine, New Haven, CT 06510, USA
- Rehabilitation Research Center, Veterans Affairs Connecticut Healthcare System, West Haven, CT 06516, USA
- Department of Plastic, Hand and Reconstructive Surgery, Medical School Hannover, Hannover, Germany
| | - Jeffery D. Kocsis
- Department of Neurology and Center for Neuroscience and Regeneration Research, Yale University School of Medicine, New Haven, CT 06510, USA
- Rehabilitation Research Center, Veterans Affairs Connecticut Healthcare System, West Haven, CT 06516, USA
- Corresponding author. Tel.: +1-(203)-937-3802; Fax: +1-(203)-937-3801; E-mail:
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46
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Abstract
Remyelination is the phenomenon by which new myelin sheaths are generated around axons in the adult central nervous system (CNS). This follows the pathological loss of myelin in diseases like multiple sclerosis (MS). Remyelination can restore conduction properties to axons (thereby restoring neurological function) and is increasingly believed to exert a neuroprotective role on axons. Remyelination occurs in many MS lesions but becomes increasingly incomplete/inadequate and eventually fails in the majority of lesions and patients. Efforts to understand the causes for this failure of regeneration have fueled research into the biology of remyelination and the complex, interdependent cellular and molecular factors that regulate this process. Examination of the mechanisms of repair of experimental lesions has demonstrated that remyelination occurs in two major phases. The first consists of colonization of lesions by oligodendrocyte progenitor cells (OPCs), the second the differentiation of OPCs into myelinating oligodendrocytes that contact demyelinated axons to generate functional myelin sheaths. Several intracellular and extracellular molecules have been identified that mediate these two phases of repair. Theoretically, the repair of demyelinating lesions can be promoted by enhancing the intrinsic repair process (by providing one or more remyelination-enhancing factors or via immunoglobulin therapy). Alternatively, endogenous repair can be bypassed by introducing myelinogenic cells into demyelinated areas; several cellular candidates have been identified that can mediate repair of experimental demyelinating lesions. Future challenges confronting therapeutic strategies to enhance remyelination will involve the translation of findings from basic science to clinical demyelinating disease.
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Affiliation(s)
- Divya M Chari
- Cambridge Centre for Brain Repair and Veterinary Medicine, University of Cambridge, Cambridge CB3OES, United Kingdom
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47
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Abstract
Abstract
OBJECTIVE
To provide a comprehensive review of the treatment trials in the field of spinal cord injury, emphasizing what has been learned about the effectiveness of the agents and strategies tested and the quality of the methodology. The review aims to provide useful information for the improvement of future trials. The review audience includes practitioners, researchers, and consumers.
METHODS
All publications describing organized trials since the 1960s were analyzed in detail, emphasizing randomized, prospective controlled trials and published Phase I and II trials. Trials were categorized into neuroprotection, surgery, regeneration, and rehabilitation trials. Special attention was paid to design, outcome measures, and case selection.
RESULTS
There are 10 randomized prospective control trials in the acute phase that have provided much useful information. Current neurological grading systems are greatly improved, but still have significant shortcomings, and independent, trained, and blinded examiners are mandatory. Other trial designs should be considered, especially those using adaptive randomization. Only methylprednisolone and thyrotropin-releasing hormone have been shown to be effective, but the results of the former are controversial, and studies involving the latter involved too few patients. None of the surgical trials has proven effectiveness. Currently, a multitude of cell-based Phase I trials in several countries are attracting large numbers of patients, but such treatments are unproven in effectiveness and may cause harm. Only a small number are being conducted in a randomized or blinded format. Several consortia have committed to a promise to improve the conduct of trials.
CONCLUSION
A large number of trials in the field of spinal cord injury have been conducted, but with few proven gains for patients. This review reveals several shortcomings in trial design and makes several recommendations for improvement.
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Affiliation(s)
- Charles H Tator
- Division of Neurosurgery, Toronto Western Hospital, 399 Bathurst Street, Suite 4W-433, Toronto, ON M5T 2S8, Canada.
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Balabanov R, Strand K, Kemper A, Lee JY, Popko B. Suppressor of cytokine signaling 1 expression protects oligodendrocytes from the deleterious effects of interferon-gamma. J Neurosci 2006; 26:5143-52. [PMID: 16687505 PMCID: PMC6674243 DOI: 10.1523/jneurosci.0737-06.2006] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2006] [Revised: 04/03/2006] [Accepted: 04/06/2006] [Indexed: 01/14/2023] Open
Abstract
Interferon-gamma (IFN-gamma) is a pleiotropic cytokine produced by T cells and natural killer cells that has been implicated as a deleterious factor in the immune-mediated demyelinating disorder multiple sclerosis. In vitro, purified developing and mature oligodendrocytes have been shown to die in the presence of IFN-gamma by apoptosis and necrosis, respectively. Moreover, transgenic expression of IFN-gamma in the CNS of mice during development results in tremor, hypomyelination, and oligodendrocyte cell loss, and IFN-gamma expression in adult animals after demyelinating insults inhibits remyelination. To examine the molecular mechanisms of IFN-gamma-induced oligodendrocyte injury, we generated a transgenic mouse line [PLP/SOCS1 (proteolipid protein/suppressor of cytokine signaling 1)] that exhibits diminished oligodendrocyte responsiveness to IFN-gamma attributable to the targeted expression of SOCS1 in these cells. We demonstrate that oligodendrocytes in the PLP/SOCS1 transgenic mice are protected against the injurious effect of IFN-gamma. Our data indicate that IFN-gamma exerts a direct deleterious effect on developing oligodendrocytes. The capacity of SOCS1 to inhibit the effects of IFN-gamma suggests a therapeutic approach toward protection of myelinating oligodendrocytes against the harmful effects of inflammation.
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49
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Goldman SA, Lang J, Roy N, Schanz SJ, Sim FS, Wang S, Washco V, Windrem MS. Progenitor cell-based myelination as a model for cell-based therapy of the central nervous system. ERNST SCHERING RESEARCH FOUNDATION WORKSHOP 2006:195-213. [PMID: 16903424 DOI: 10.1007/3-540-31437-7_13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Diseases of the brain and spinal cord are especially daunting challenges for cell-based strategies of repair, given the multiplicity of cell types within the adult central nervous system, and the precision with which they must interact in both space and time. Nonetheless, a number of diseases are especially appropriate for cell-based therapy, in particular those in which single phenotypes are lost. Foremost among these are the disorders of myelin, in which oligodendrocytes are the specific and often sole victims of the underlying disease process. These include not only the vascular, traumatic, and inflammatory demyelinations of adulthood, but also the congenital and childhood dysmyelinating syndromes of the pediatric leukodystrophies. These congenital disorders of myelin formation and maintenance may present especially compelling targets for cell-based neurological therapy.
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Affiliation(s)
- S A Goldman
- Department of Neurology, University of Rochester Medical Center, NY 14642, USA.
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