51
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Novotna B, Jendelova P, Kapcalova M, Rossner P, Turnovcova K, Bagryantseva Y, Babic M, Horak D, Sykova E. Oxidative damage to biological macromolecules in human bone marrow mesenchymal stromal cells labeled with various types of iron oxide nanoparticles. Toxicol Lett 2012; 210:53-63. [PMID: 22269213 DOI: 10.1016/j.toxlet.2012.01.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 12/21/2011] [Accepted: 01/09/2012] [Indexed: 02/07/2023]
Abstract
The biological effects of several superparamagnetic iron oxide nanoparticles (SPIONs) varying in their surface coating were tested using human bone marrow mesenchymal stromal cells from two donors - hBMSCs-1 and hBMSCs-2. The measurements were performed at two intervals - after 72 h exposure to the nanoparticles and after an additional 72 h cell growth without nanoparticles. The dose of SPIONs used (15.4 μg Fe/ml) was selected as being sufficient for in vivo cell tracking using magnetic resonance imaging (MRI). Concerning cell viability and cell death, only the hBMSCs-2 seemed to be sensitive to the action of SPIONs. However, an increase of oxidative injury to lipids, proteins and DNA as a consequence of exposure to SPIONs was detected in cells from both donors. Particularly the levels of lipid peroxidation were high and increased further with time, regardless of the type of nanoparticle. Lowering intracellular label concentrations and authenticating oxidative stress levels using in vivo experiments are required to ensure the safety of SPIONs for biomedical applications.
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Affiliation(s)
- Bozena Novotna
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
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52
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Rosser AE, Bachoud-Lévi AC. Clinical trials of neural transplantation in Huntington's disease. PROGRESS IN BRAIN RESEARCH 2012. [PMID: 23195427 DOI: 10.1016/b978-0-444-59575-1.00016-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Clinical neural transplantation in Huntington's disease has moved forward as a series of small studies, which have provided some preliminary proof of principle that neural transplantation can provide benefit. However, to date, such benefits have not been robust, and there are a number of important issues that need to be addressed. These include defining the optimum donor tissue conditions and host characteristics in order to produce reliable benefit in transplant recipients, and whether, and for how long, immunosuppression is needed. Further clinical studies will be required to address these, and other issues, in order to better understand the processes leading to a properly functioning neural graft. Such studies will pave the way for future clinical trials of renewable donor sources, in particular, stem cell-derived neuronal progenitor grafts.
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Affiliation(s)
- Anne E Rosser
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, Wales, UK.
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53
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Garbayo E, Raval A, Curtis K, Della-Morte D, Gomez L, D'Ippolito G, Reiner T, Perez-Stable C, Howard G, Perez-Pinzon M, Montero-Menei C, Schiller P. Neuroprotective properties of marrow-isolated adult multilineage-inducible cells in rat hippocampus following global cerebral ischemia are enhanced when complexed to biomimetic microcarriers. J Neurochem 2011; 119:972-88. [PMID: 21496021 PMCID: PMC4516086 DOI: 10.1111/j.1471-4159.2011.07272.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cell-based therapies for global cerebral ischemia represent promising approaches for neuronal damage prevention and tissue repair promotion. We examined the potential of marrow-isolated adult multilineage-inducible (MIAMI) cells, a homogeneous subpopulation of immature human mesenchymal stromal cell, injected into the hippocampus to prevent neuronal damage induced by global ischemia using rat organotypic hippocampal slices exposed to oxygen-glucose deprivation and rats subjected to asphyxial cardiac arrest. We next examined the value of combining fibronectin-coated biomimetic microcarriers (FN-BMMs) with epidermal growth factor (EGF)/basic fibroblast growth factor (bFGF) pre-treated MIAMI compared to EGF/bFGF pre-treated MIAMI cells alone, for their in vitro and in vivo neuroprotective capacity. Naïve and EGF/bFGF pre-treated MIAMI cells significantly protected the Cornu Ammonis layer 1 (CA1) against ischemic death in hippocampal slices and increased CA1 survival in rats. MIAMI cells therapeutic value was significantly increased when delivering the cells complexed with FN-BMMs, probably by increasing stem cell survival and paracrine secretion of pro-survival and/or anti-inflammatory molecules as concluded from survival, differentiation and gene expression analysis. Four days after oxygen and glucose deprivation and asphyxial cardiac arrest, few transplanted cells administered alone survived in the brain whereas stem cell survival improved when injected complexed with FN-BMMs. Interestingly, a large fraction of the transplanted cells administered alone or in complexes expressed βIII-tubulin suggesting that partial neuronal transdifferentiation may be a contributing factor to the neuroprotective mechanism of MIAMI cells.
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Affiliation(s)
- E. Garbayo
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Inserm U646, Angers F49100 (France),University of Angers, UMR-S646, Angers, F49100 (France)
| | - A.P. Raval
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - K.M. Curtis
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Biochemistry & Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - D. Della-Morte
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Laboratory Medicine & Advanced Biotechnologies, IRCCS San Raffaele, Rome, Italy
| | - L.A. Gomez
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA)
| | - G. D'Ippolito
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Geriatrics, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Interdisciplinary Stem Cell, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Institutes and University of Miami Tissue Bank, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - T. Reiner
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA)
| | - C. Perez-Stable
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA)
| | - G.A. Howard
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Biochemistry & Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - M.A. Perez-Pinzon
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - C.N. Montero-Menei
- Inserm U646, Angers F49100 (France),University of Angers, UMR-S646, Angers, F49100 (France)
| | - P.C. Schiller
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Biochemistry & Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Geriatrics, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Interdisciplinary Stem Cell, University of Miami Miller School of Medicine, Miami, Florida (USA)
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54
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The use of cellular magnetic resonance imaging to track the fate of iron-labeled multipotent stromal cells after direct transplantation in a mouse model of spinal cord injury. Mol Imaging Biol 2011; 13:702-11. [PMID: 20686855 DOI: 10.1007/s11307-010-0393-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE The objective of this study was to track the fate of iron-labeled, multipotent stromal cells (MSC) after their direct transplantation into mice with spinal cord injuries using magnetic resonance imaging (MRI). PROCEDURES Mice with spinal cord injuries received a direct transplant of (1) live MSC labeled with micron-sized iron oxide particles (MPIO); (2) dead, MPIO-labeled MSC; (3) unlabeled MSC; or (4) free MPIO and were imaged at 3 T for 6 weeks after transplantation. RESULTS Live, iron-labeled MSC appeared as a well-defined region of signal loss in the mouse spinal cord at the site of transplant. However, the MR appearance of dead, iron-labeled MSC and free iron particles was similar and persisted for the 6 weeks of the study. CONCLUSIONS Iron-labeled stem cells can be detected and monitored in vivo after direct transplantation into the injured spinal cord of mice. However, the fate of the iron label is not clear. Our investigation indicates that caution should be taken when interpreting MR images after direct transplantation of iron-labeled cells.
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55
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Hwang DH, Jeong SR, Kim BG. Gene transfer mediated by stem cell grafts to treat CNS injury. Expert Opin Biol Ther 2011; 11:1599-610. [PMID: 22017608 DOI: 10.1517/14712598.2011.631908] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Stem cell transplantation holds promise for promoting anatomical repair and functional recovery after traumatic or ischemic injuries to the CNS. Harnessing stem cells with therapeutic genes of interest is regarded as an attractive approach to augment therapeutic benefits of stem cell grafts. AREAS COVERED The advantage of stem-cell-mediated gene transfer is the engraftibility of stem cells that can ensure a long-term and stable expression of therapeutic genes. In addition, stem-cell-gene interaction may synergistically amplify therapeutic benefits. Delivery of classical neurotrophic factor genes provided neuroprotective and pro-regenerative effects in various injury models. Some studies employed therapeutic genes targeting post-injury microenvironment to support endogenous repair. Recent trials of stem-cell-mediated transfer of nonclassical growth factors showed relatively novel biological effects. Combinatorial strategies seem to have the potential to improve therapeutic efficacy. EXPERT OPINION Future development of induced pluripotent stem cells and novel scaffolding biomaterials will greatly expedite the advances in ex vivo gene therapy to treat CNS injury. Before moving to a clinical stage, rigorous preclinical evaluations are needed to identify an optimal gene or gene combination in different injury settings. Improving the safety of viral vectors will be a critical prerequisite for the clinical translation.
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Affiliation(s)
- Dong H Hwang
- Ajou University School of Medicine, Brain Disease Research Center, Institute for Medical Sciences, Suwon, Republic of Korea
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Chamberlain G, Smith H, Rainger GE, Middleton J. Mesenchymal stem cells exhibit firm adhesion, crawling, spreading and transmigration across aortic endothelial cells: effects of chemokines and shear. PLoS One 2011; 6:e25663. [PMID: 21980522 PMCID: PMC3182247 DOI: 10.1371/journal.pone.0025663] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Accepted: 09/07/2011] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have anti-inflammatory and immunosuppressive properties and may be useful in the therapy of diseases such as arteriosclerosis. MSCs have some ability to traffic into inflamed tissues, however to exploit this therapeutically their migratory mechanisms need to be elucidated. This study examines the interaction of murine MSCs (mMSCs) with, and their migration across, murine aortic endothelial cells (MAECs), and the effects of chemokines and shear stress. The interaction of mMSCs with MAECs was examined under physiological flow conditions. mMSCs showed lack of interaction with MAECs under continuous flow. However, when the flow was stopped (for 10min) and then started, mMSCs adhered and crawled on the endothelial surface, extending fine microvillous processes (filopodia). They then spread extending pseudopodia in multiple directions. CXCL9 significantly enhanced the percentage of mMSCs adhering, crawling and spreading and shear forces markedly stimulated crawling and spreading. CXCL9, CXCL16, CCL20 and CCL25 significantly enhanced transendothelial migration across MAECs. The transmigrated mMSCs had down-regulated receptors CXCR3, CXCR6, CCR6 and CCR9. This study furthers the knowledge of MSC transendothelial migration and the effects of chemokines and shear stress which is of relevance to inflammatory diseases such as arteriosclerosis.
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Affiliation(s)
- Giselle Chamberlain
- Leopold Muller Arthritis Research Centre, Medical School, Keele University, RJAH Orthopaedic Hospital, Oswestry, Shropshire, United Kingdom
| | - Helen Smith
- Leopold Muller Arthritis Research Centre, Medical School, Keele University, RJAH Orthopaedic Hospital, Oswestry, Shropshire, United Kingdom
| | - G. Ed Rainger
- School of Clinical and Experimental Medicine, College of Medicine and Dentistry, University of Birmingham, Birmingham, United Kingdom
| | - Jim Middleton
- Leopold Muller Arthritis Research Centre, Medical School, Keele University, RJAH Orthopaedic Hospital, Oswestry, Shropshire, United Kingdom
- Faculty of Medicine and Dentistry, School of Oral and Dental Sciences, University of Bristol, Bristol, United Kingdom
- * E-mail:
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57
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Raju HB, Hu Y, Padgett KR, Rodriguez JE, Goldberg JL. Investigation of nanoparticles using magnetic resonance imaging after intravitreal injection. Clin Exp Ophthalmol 2011; 40:100-7. [DOI: 10.1111/j.1442-9071.2011.02651.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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58
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Ribot EJ, Martinez-Santiesteban FM, Simedrea C, Steeg PS, Chambers AF, Rutt BK, Foster PJ. In vivo single scan detection of both iron-labeled cells and breast cancer metastases in the mouse brain using balanced steady-state free precession imaging at 1.5 T. J Magn Reson Imaging 2011; 34:231-8. [PMID: 21698713 PMCID: PMC3501681 DOI: 10.1002/jmri.22593] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
PURPOSE To simultaneously detect iron-labeled cancer cells and brain tumors in vivo in one scan, the balanced steady-state free precession (b-SSFP) imaging sequence was optimized at 1.5 T on mice developing brain metastases subsequent to the injection of micron-sized iron oxide particle-labeled human breast cancer cells. MATERIALS AND METHODS b-SSFP sequence parameters (repetition time, flip angle, and receiver bandwidth) were varied and the signal-to-noise ratio, contrast between the brain and tumors, and the number of detected iron-labeled cells were evaluated. RESULTS Optimal b-SSFP images were acquired with a 26 msec repetition time, 35° flip angle, and bandwidth of ±21 kHz. b-SSFP images were compared with T(2) -weighted 2D fast spin echo (FSE) and 3D spoiled gradient recalled echo (SPGR) images. The mean tumor-brain contrast-to-noise ratio and the ability to detect iron-labeled cells were the highest in the b-SSFP images. CONCLUSION A single b-SSFP scan can be used to visualize both iron-labeled cells and brain metastases.
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Affiliation(s)
- Emeline J. Ribot
- Imaging Research Laboratories, Robarts Research Institute, London, ON, Canada
| | | | | | - Patricia S. Steeg
- Women’s Cancers Section, Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - Ann F. Chambers
- London Regional Cancer Program, London, ON, Canada
- Department of Medical Biophysics, University of Western Ontario, London, ON, Canada
| | - Brian K. Rutt
- Richard M. Lucas Center for Imaging, Radiology Department, Stanford University, Stanford, California, USA
| | - Paula J. Foster
- Imaging Research Laboratories, Robarts Research Institute, London, ON, Canada
- Department of Medical Biophysics, University of Western Ontario, London, ON, Canada
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59
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Yang J, Lee ES, Noh MY, Koh SH, Lim EK, Yoo AR, Lee K, Suh JS, Kim SH, Haam S, Huh YM. Ambidextrous magnetic nanovectors for synchronous gene transfection and labeling of human MSCs. Biomaterials 2011; 32:6174-82. [PMID: 21696819 DOI: 10.1016/j.biomaterials.2011.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Accepted: 04/05/2011] [Indexed: 12/16/2022]
Abstract
The synchronization of gene expression and cell trafficking in transfected stem cells is crucial for augmentation of stem cell functions (differentiation and neurotropic factor secretion) and real time in vivo monitoring. We report a magnetic nanoparticle-based gene delivery system that can ensure simultaneous gene delivery and in vivo cell trafficking by high resolution MR imaging. The polar aprotic solvent soluble MnFe₂O₄ nanoparticles were enveloped using cationic polymers (branched polyethyleneimine, PEI) by the solvent shifting method for a gene loading. Using our magnetic nanovector system (PEI-coated MnFe₂O₄ nanoparticles), thus, we synchronized stem cell migration and its gene expression in a rat stroke model.
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Affiliation(s)
- Jaemoon Yang
- Department of Radiology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
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Urdziková L, Likavčanová-Mašínová K, Vaněček V, Růžička J, Sedý J, Syková E, Jendelová P. Flt3 ligand synergizes with granulocyte-colony-stimulating factor in bone marrow mobilization to improve functional outcome after spinal cord injury in the rat. Cytotherapy 2011; 13:1090-104. [PMID: 21539498 DOI: 10.3109/14653249.2011.575355] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND AIMS The effect of granulocyte-colony-stimulating factor (G-CSF) and/or the cytokine fms-like thyrosin kinase 3 (Flt3) ligand on functional outcome and tissue regeneration was studied in a rat model of spinal cord injury (SCI). METHODS Rats with a balloon-induced compression lesion were injected with G-CSF and/or Flt3 ligand to mobilize bone marrow cells. Behavioral tests (Basso-Beattie-Bresnahan and plantar test), blood counts, morphometric evaluation of the white and gray matter, and histology were performed 5 weeks after SCI. RESULTS The mobilization of bone marrow cells by G-CSF, Flt3 ligand and their combination improved the motor and sensory performance of rats with SCI, reduced glial scarring, increased axonal sprouting and spared white and gray matter in the lesion. The best results were obtained with a combination of G-CSF and Flt3. G-CSF alone or in combination with Flt3 ligand significantly increased the number of white blood cells, but not red blood cells or hemoglobin content, during and after the time-course of bone marrow stimulation. The combination of factors led to infiltration of the lesion by CD11b(+) cells. CONCLUSIONS The observed improvement in behavioral and morphologic parameters and tissue regeneration in animals with SCI treated with a combination of both factors could be associated with a prolonged time-course of mobilization of bone marrow cells. The intravenous administration of G-CSF and/or Flt3 ligand represents a safe and effective treatment modality for SCI.
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Affiliation(s)
- Lucia Urdziková
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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Bauchet L, Lonjon N, Perrin FE, Gilbert C, Privat A, Fattal C. Strategies for spinal cord repair after injury: a review of the literature and information. Ann Phys Rehabil Med 2011; 52:330-51. [PMID: 19886026 DOI: 10.1016/j.annrmp.2008.10.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Thanks to the Internet, we can now have access to more information about spinal cord repair. Spinal cord injured (SCI) patients request more information and hospitals offer specific spinal cord repair medical consultations. OBJECTIVE Provide practical and relevant elements to physicians and other healthcare professionals involved in the care of SCI patients in order to provide adequate answers to their questions. METHOD Our literature review was based on English and French publications indexed in PubMed and the main Internet websites dedicated to spinal cord repair. RESULTS A wide array of research possibilities including notions of anatomy, physiology, biology, anatomopathology and spinal cord imaging is available for the global care of the SCI patient. Prevention and repair strategies (regeneration, transplant, stem cells, gene therapy, biomaterials, using sublesional uninjured spinal tissue, electrical stimulation, brain/computer interface, etc.) for the injured spinal cord are under development. It is necessary to detail the studies conducted and define the limits of these new strategies and benchmark them to the realistic medical and rehabilitation care available to these patients. CONCLUSION Research is quickly progressing and clinical trials will be developed in the near future. They will have to answer to strict methodological and ethical guidelines. They will first be designed for a small number of patients. The results will probably be fragmented and progress will be made through different successive steps.
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Affiliation(s)
- L Bauchet
- Centre mutualiste neurologique Propara, 34195 Montpellier, France.
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Abstract
Amyotrophic lateral sclerosis (ALS) is an idiopathic, fatal neurodegenerative disease of the human motor system. In this Seminar, we summarise current concepts about the origin of the disease, what predisposes patients to develop the disorder, and discuss why all cases of ALS are not the same. In the 150 years since Charcot originally described ALS, painfully slow progress has been made towards answering these questions. We focus on what is known about ALS and where research is heading-from the small steps of extending longevity, improving therapies, undertaking clinical trials, and compiling population registries to the overarching goals of establishing the measures that guard against onset and finding the triggers for this neurodegenerative disorder.
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Affiliation(s)
- Matthew C Kiernan
- Neuroscience Research Australia and Prince of Wales Clinical School, University of New South Wales, Sydney, Australia.
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63
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Hejcl A, Sedý J, Kapcalová M, Toro DA, Amemori T, Lesný P, Likavcanová-Mašínová K, Krumbholcová E, Prádný M, Michálek J, Burian M, Hájek M, Jendelová P, Syková E. HPMA-RGD hydrogels seeded with mesenchymal stem cells improve functional outcome in chronic spinal cord injury. Stem Cells Dev 2011; 19:1535-46. [PMID: 20053128 DOI: 10.1089/scd.2009.0378] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Chronic spinal cord injury (SCI) is characterized by tissue loss and a stable functional deficit. While several experimental therapies have proven to be partly successful for the treatment of acute SCI, treatment of chronic SCI is still challenging. We studied whether we can bridge a chronic spinal cord lesion by implantation of our newly developed hydrogel based on 2-hydroxypropyl methacrylamide, either alone or seeded with mesenchymal stem cells (MSCs), and whether this treatment leads to functional improvement. A balloon-induced compression lesion was performed in adult 2-month-old male Wistar rats. Five weeks after injury, HPMA-RGD hydrogels [N-(2-hydroxypropyl)-methacrylamide with attached amino acid sequences--Arg-Gly-Asp] were implanted into the lesion, either with or without seeded MSCs. Animals with chronic SCI served as controls. The animals were behaviorally tested using the Basso–Beattie-Breshnahan (BBB) (motor) and plantar (sensory) tests once a week for 6 months. Behavioral analysis showed a statistically significant improvement in rats with combined treatment, hydrogel and MSCs, compared with the control group (P < 0.05). Although a tendency toward improvement was found in rats treated with hydrogel only, this was not significant. Subsequently, the animals were sacrificed 6 months after SCI, and the spinal cord lesions evaluated histologically. The combined therapy (hydrogel with MSCs) prevented tissue atrophy (P < 0.05), and the hydrogels were infiltrated with axons myelinated with Schwann cells. Blood vessels and astrocytes also grew inside the implant. MSCs were present in the hydrogels even 5 months after implantation. We conclude that 5 weeks after injury, HPMA-RGD hydrogels seeded with MSCs can successfully bridge a spinal cord cavity and provide a scaffold for tissue regeneration. This treatment leads to functional improvement even in chronic SCI.
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Affiliation(s)
- Ales Hejcl
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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64
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Hong H, Yang Y, Zhang Y, Cai W. Non-invasive imaging of human embryonic stem cells. Curr Pharm Biotechnol 2011; 11:685-92. [PMID: 20497109 DOI: 10.2174/138920110792246500] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Accepted: 03/29/2010] [Indexed: 11/22/2022]
Abstract
Human embryonic stem cells (hESCs) hold tremendous therapeutic potential in a variety of diseases. Over the last decade, non-invasive imaging techniques have proven to be of great value in tracking transplanted hESCs. This review article will briefly summarize the various techniques used for non-invasive imaging of hESCs, which include magnetic resonance imaging (MRI), bioluminescence imaging (BLI), fluorescence, single-photon emission computed tomography (SPECT), positron emission tomography (PET), and multimodality approaches. Although the focus of this review article is primarily on hESCs, the labeling/tracking strategies described here can be readily applied to other (stem) cell types as well. Non-invasive imaging can provide convenient means to monitor hESC survival, proliferation, function, as well as overgrowth (such as teratoma formation), which could not be readily investigated previously. The requirement for hESC tracking techniques depends on the clinical scenario and each imaging technique will have its own niche in preclinical/clinical research. Continued evolvement of non-invasive imaging techniques will undoubtedly contribute to significant advances in understanding stem cell biology and mechanisms of action.
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Affiliation(s)
- Hao Hong
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705-2275, USA
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Gao Y, Stanford WL, Chan WCW. Quantum-dot-encoded microbeads for multiplexed genetic detection of non-amplified DNA samples. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:137-146. [PMID: 21110335 DOI: 10.1002/smll.201000909] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Barcoding technologies have become the basis for a new generation of molecular diagnostic platforms for measuring biomarkers in a high-throughput, rapid, and sensitive manner. Thus far, researchers have mainly focused on preparing different types of barcodes but, in order to use them optimally in genomic- and proteomic-based applications, there is a need to understand the effect of barcode and assay parameters on their performance. Herein, quantum-dot barcodes are systematically characterized for the detection of non-amplified DNA sequences. The effect of capture probes, reporter probes, and target DNA sequence lengths are studied, as well as the effect of the amount of noncomplementary sequences on the hybridization kinetics and efficiency. From DNA denaturation to signal detection, quantum-dot-barcode assays require less than one hour to detect a target DNA sequence with a linear dynamic range of 0.02-100 fmol. Three optically distinct quantum-dot barcodes are used to demonstrate the multiplexing capability of these barcodes for genomic detection. These results suggest that quantum-dot barcodes are an excellent platform for multiplex, rapid, and sensitive genetic detection.
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Affiliation(s)
- Yali Gao
- Institute of Biomaterials & Biomedical Engineering, University of Toronto, Toronto, ON, M5S 3G9, Canada
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Hejčl A, Jendelová P, Syková E. Experimental reconstruction of the injured spinal cord. Adv Tech Stand Neurosurg 2011:65-95. [PMID: 21997741 DOI: 10.1007/978-3-7091-0673-0_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Injury to the spinal cord, with its pathological sequelae, results in a permanent neurological deficit. With currently available tools at hand, there is very little that clinicians can do to treat such a condition with the view of helping patients with spinal cord injury (SCI). On the other hand, in the last 20 years experimental research has brought new insights into the pathophysiology of spinal cord injury; we can divide the time course into 3 phases: primary injury (the time of traumatic impact and the period immediately afterwards), the secondary phase (cell death, inflammation, ischemia), and the chronic phase (scarring, demyelination, cyst formation). Increased knowledge about the pathophysiology of SCI can stimulate the development of new therapeutic modalities and approaches, which may be feasible in the future in clinical practice. Some of the most promising experimental therapies include: neurotrophic factors, enzymes and antibodies against inhibitory molecules (such as Nogo), activated macrophages, stem cells and bridging scaffolds. Their common goal is to reconstitute the damaged tissue in order to recover the lost function. In the current review, we focus on some of the recent developments in experimental SCI research.
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Affiliation(s)
- A Hejčl
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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Obenaus A, Dilmac N, Tone B, Tian HR, Hartman R, Digicaylioglu M, Snyder EY, Ashwal S. Long-term magnetic resonance imaging of stem cells in neonatal ischemic injury. Ann Neurol 2010; 69:282-91. [PMID: 21387373 DOI: 10.1002/ana.22168] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 07/03/2010] [Accepted: 07/16/2010] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Quantitative magnetic resonance imaging (MRI) can serially and noninvasively assess the degree of injury in rat pup models of hypoxic ischemic injury (HII). It can also noninvasively monitor stem cell migration following iron oxide prelabeling. Reports have shown that neural stem cells (NSCs) may help mediate neuroprotection or stimulate neuroreparative responses in adult and neonatal models of ischemic injury. We investigated the ability of high-field MRI to monitor and noninvasively quantify the migration, proliferation, and location of iron oxide-labeled NSCs over very long time periods (58 weeks) in real time while contemporaneously correlating this activity with the evolving severity and extent of neural damage. METHODS Labeled clonal murine NSCs (mNSCs) were implanted 3 days after unilateral HII in 10-day-old rat pups into the contralateral striatum or ventricle. We developed methods for objectively quantifying key aspects of dynamic NSC behavior (eg, viability; extent, and speed of migration; degree of proliferation; extent of integration into host parenchyma). MRI images were validated with histological and immunohistochemical assessments. RESULTS mNSCs rapidly migrated (100 μm/day) to the lesion site. Chains of migrating NSCs were observed in the corpus callosum. In pups subjected to HII, though not in intact control animals, we observed a 273% increase in the MR-derived volume of mNSCs 4 weeks after implantation (correlating with the known proliferative behavior of endogenous and exogenous NSCs) that slowly declined over the 58-week time course, with no adverse consequences. Large numbers of now quiescent mNSCs remained at the site of injury, many retaining their iron oxide label. INTERPRETATION Our studies demonstrate that MRI can simultaneously monitor evolving neonatal cerebral injury as well as NSC migration and location. Most importantly, it can noninvasively monitor proliferation dynamically for prolonged time periods. To be able to pursue clinical trials in newborns using stem cell therapies it is axiomatic that safety be insured through the long-term real time monitoring of cell fate and activity, particularly with regard to observing unanticipated risks to the developing brain. This study supports the feasibility of reliably using MRI for this purpose.
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Affiliation(s)
- Andre Obenaus
- Department Radiation Medicine, Loma Linda University, CA, USA.
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Tang C, Russell PJ, Martiniello-Wilks R, Rasko JEJ, Khatri A. Concise review: Nanoparticles and cellular carriers-allies in cancer imaging and cellular gene therapy? Stem Cells 2010; 28:1686-702. [PMID: 20629172 PMCID: PMC2996089 DOI: 10.1002/stem.473] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Ineffective treatment and poor patient management continue to plague the arena of clinical oncology. The crucial issues include inadequate treatment efficacy due to ineffective targeting of cancer deposits, systemic toxicities, suboptimal cancer detection and disease monitoring. This has led to the quest for clinically relevant, innovative multifaceted solutions such as development of targeted and traceable therapies. Mesenchymal stem cells (MSCs) have the intrinsic ability to "home" to growing tumors and are hypoimmunogenic. Therefore, these can be used as (a) "Trojan Horses" to deliver gene therapy directly into the tumors and (b) carriers of nanoparticles to allow cell tracking and simultaneous cancer detection. The camouflage of MSC carriers can potentially tackle the issues of safety, vector, and/or transgene immunogenicity as well as nanoparticle clearance and toxicity. The versatility of the nanotechnology platform could allow cellular tracking using single or multimodal imaging modalities. Toward that end, noninvasive magnetic resonance imaging (MRI) is fast becoming a clinical favorite, though there is scope for improvement in its accuracy and sensitivity. In that, use of superparamagnetic iron-oxide nanoparticles (SPION) as MRI contrast enhancers may be the best option for tracking therapeutic MSC. The prospects and consequences of synergistic approaches using MSC carriers, gene therapy, and SPION in developing cancer diagnostics and therapeutics are discussed.
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Affiliation(s)
- Catherine Tang
- Oncology Research Centre, Prince of Wales Hospital, Randwick, Sydney, NSW, Australia
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Jozwiak S, Habich A, Kotulska K, Sarnowska A, Kropiwnicki T, Janowski M, Jurkiewicz E, Lukomska B, Kmiec T, Walecki J, Roszkowski M, Litwin M, Oldak T, Boruczkowski D, Domanska-Janik K. Intracerebroventricular Transplantation of Cord Blood-Derived Neural Progenitors in a Child With Severe Global Brain Ischemic Injury. CELL MEDICINE 2010; 1:71-80. [PMID: 26966631 PMCID: PMC4776166 DOI: 10.3727/215517910x536618] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Transplantation of neural stem/precursor cells has recently been proposed as a promising, albeit still controversial, approach to brain repair. Human umbilical cord blood could be a source of such therapeutic cells, proven beneficial in several preclinical models of stroke. Intracerebroventricular infusion of neutrally committed cord blood-derived cells allows their broad distribution in the CNS, whereas additional labeling with iron oxide nanoparticles (SPIO) enables to follow the fate of engrafted cells by MRI. A 16-month-old child at 7 months after the onset of cardiac arrest-induced global hypoxic/ischemic brain injury, resulting in a permanent vegetative state, was subjected to intracerebroventricular transplantation of the autologous neutrally committed cord blood cells. These cells obtained by 10-day culture in vitro in neurogenic conditions were tagged with SPIO nanoparticles and grafted monthly by three serial injections (12 × 10(6) cells/0.5 ml) into lateral ventricle of the brain. Neural conversion of cord blood cells and superparamagnetic labeling efficiency was confirmed by gene expression, immunocytochemistry, and phantom study. MRI examination revealed the discrete hypointense areas appearing immediately after transplantation in the vicinity of lateral ventricles wall with subsequent lowering of the signal during entire period of observation. The child was followed up for 6 months after the last transplantation and his neurological status slightly but significantly improved. No clinically significant adverse events were noted. This report indicates that intracerebroventricular transplantation of autologous, neutrally committed cord blood cells is a feasible, well tolerated, and safe procedure, at least during 6 months of our observation period. Moreover, a cell-related MRI signal persisted at a wall of lateral ventricle for more than 4 months and could be monitored in transplanted brain hemisphere.
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Affiliation(s)
- Sergiusz Jozwiak
- *Department of Neurology and Epileptology, The Children’s Memorial Health Institute, Warsaw, Poland
| | - Aleksandra Habich
- †NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Katarzyna Kotulska
- *Department of Neurology and Epileptology, The Children’s Memorial Health Institute, Warsaw, Poland
| | - Anna Sarnowska
- †NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Kropiwnicki
- ‡Department of Neurosurgery, The Children’s Memorial Health Institute, Warsaw, Poland
| | - Miroslaw Janowski
- †NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Elzbieta Jurkiewicz
- §Department of Radiology, MR Unit, The Children’s Memorial Health Institute, Warsaw, Poland
| | - Barbara Lukomska
- †NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Kmiec
- *Department of Neurology and Epileptology, The Children’s Memorial Health Institute, Warsaw, Poland
| | - Jerzy Walecki
- ¶Department of Radiology and Diagnostic Imaging, Postgraduate Medical Centre and Experimental Pharmacology Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Marcin Roszkowski
- ‡Department of Neurosurgery, The Children’s Memorial Health Institute, Warsaw, Poland
| | - Mieczyslaw Litwin
- #Department of Nephrology, The Children’s Memorial Health Institute, Warsaw, Poland
| | | | | | - Krystyna Domanska-Janik
- †NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
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Ramos-Cabrer P, Justicia C, Wiedermann D, Hoehn M. Stem cell mediation of functional recovery after stroke in the rat. PLoS One 2010; 5:e12779. [PMID: 20877642 PMCID: PMC2943902 DOI: 10.1371/journal.pone.0012779] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Accepted: 08/21/2010] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Regenerative strategies of stem cell grafting have been demonstrated to be effective in animal models of stroke. In those studies, the effectiveness of stem cells promoting functional recovery was assessed by behavioral testing. These behavioral studies do, however, not provide access to the understanding of the mechanisms underlying the observed functional outcome improvement. METHODOLOGY/PRINCIPAL FINDINGS In order to address the underlying mechanisms of stem cell mediated functional improvement, this functional improvement after stroke in the rat was investigated for six months after stroke by use of fMRI, somatosensory evoked potentials by electrophysiology, and sensorimotor behavior testing. Stem cells were grafted ipsilateral to the ischemic lesion. Rigorous exclusion of spontaneous recovery as confounding factor permitted to observe graft-related functional improvement beginning after 7 weeks and continuously increasing during the 6-month observation period. The major findings were i) functional improvement causally related to the stem cells grafting; ii) tissue replacement can be excluded as dominant factor for stem cell mediated functional improvement; iii) functional improvement occurs by exclusive restitution of the function in the original representation field, without clear contributions from reorganization processes, and iv) stem cells were not detectable any longer after six months. CONCLUSIONS/SIGNIFICANCE A delayed functional improvement due to stem cell implantation has been documented by electrophysiology, fMRI and behavioral testing. This functional improvement occurred without cells acting as a tissue replacement for the necrotic tissue after the ischemic event. Combination of disappearance of grafted cells after six months on histological sections with persistent functional recovery was interpreted as paracrine effects by the grafted stem cells being the dominant mechanism of cell activity underlying the observed functional restitution of the original activation sites. Future studies will have to investigate whether the stem cell mediated improvement reactivates the original representation target field by using original connectivity pathways or by generating/activating new ones for the stimulus.
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Affiliation(s)
- Pedro Ramos-Cabrer
- In-vivo-NMR Laboratory, Max Planck Institute for Neurological Research, Cologne, Germany
| | - Carles Justicia
- In-vivo-NMR Laboratory, Max Planck Institute for Neurological Research, Cologne, Germany
| | - Dirk Wiedermann
- In-vivo-NMR Laboratory, Max Planck Institute for Neurological Research, Cologne, Germany
| | - Mathias Hoehn
- In-vivo-NMR Laboratory, Max Planck Institute for Neurological Research, Cologne, Germany
- * E-mail:
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Delcroix GJR, Curtis KM, Schiller PC, Montero-Menei CN. EGF and bFGF pre-treatment enhances neural specification and the response to neuronal commitment of MIAMI cells. Differentiation 2010; 80:213-27. [PMID: 20813449 DOI: 10.1016/j.diff.2010.07.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 06/28/2010] [Accepted: 07/12/2010] [Indexed: 02/06/2023]
Abstract
AIMS Multipotent mesenchymal stromal cells raise great interest for regenerative medicine studies. Some MSC subpopulations have the potential to undergo neural differentiation, including marrow isolated adult multilineage inducible (MIAMI) cells, which differentiate into neuron-like cells in a multi-step neurotrophin 3-dependent manner. Epidermal and basic fibroblast growth factors are often used in neuronal differentiation protocols for MSCs, but with a limited understanding of their role. In this study, we thoroughly assessed for the first time the capacity of these factors to enhance the neuronal differentiation of MSCs. MATERIALS AND METHODS We have characterized MIAMI cell neuronal differentiation program in terms of stem cell molecule expression, cell cycle modifications, acquisition of a neuronal morphology and expression of neural and neuronal molecules in the absence and presence of an EGF-bFGF pre-treatment. RESULTS EGF-bFGF pre-treatment down-regulated the expression of stemness markers Oct4A, Notch1 and Hes5, whereas neural/neuronal molecules Nestin, Pax6, Ngn2 and the neurotrophin receptor tyrosine kinase 1 and 3 were up-regulated. During differentiation, a sustained Erk phosphorylation in response to NT3 was observed, cells began to exit from the cell cycle and exhibit increased neurite-like extensions. In addition, neuronal β3-tubulin and neurofilament expression was increased; an effect mediated via the Erk pathway. A slight pre-oligodendrocyte engagement was noted, and no default neurotransmitter phenotype was observed. Overall, mesodermal markers were unaffected or decreased, while neurogenic/adipogenic PPARγ2 was increased. CONCLUSION EGF and bFGF pre-treatment enhances neural specification and the response to neuronal commitment of MIAMI cells, further increasing their potential use in adult cell therapy of the nervous system.
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Cohen ME, Muja N, Fainstein N, Bulte JWM, Ben-Hur T. Conserved fate and function of ferumoxides-labeled neural precursor cells in vitro and in vivo. J Neurosci Res 2010; 88:936-44. [PMID: 19885865 DOI: 10.1002/jnr.22277] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Recent progress in cell therapy research for brain diseases has raised the need for non-invasive monitoring of transplanted cells. For therapeutic application in multiple sclerosis, transplanted cells need to be tracked both spatially and temporally, in order to assess their migration and survival in the host tissue. Magnetic resonance imaging (MRI) of superparamagnetic iron oxide-(SPIO)-labeled cells has been widely used for high resolution monitoring of the biodistribution of cells after transplantation into the central nervous system (CNS). Here we labeled mouse glial-committed neural precursor cells (NPCs) with the clinically approved SPIO contrast agent ferumoxides and examined their survival and differentiation in vitro, as well as their functional response to environmental signals present within the inflamed brain of experimental autoimmune encephalomyelitis (EAE) mice in vivo. We show that ferumoxides labeling does not affect NPC survival and pluripotency in vitro. Following intracerebroventricular (ICV) transplantation in EAE mice, ferumoxides-labeled NPCs responded to inflammatory cues in a similar fashion as unlabeled cells. Ferumoxides-labeled NPCs migrated over comparable distances in white matter tracts and differentiated equally into the glial lineages. Furthermore, ferumoxides-labeled NPCs inhibited lymph node cell proliferation in vitro, similarly to non-labeled cells, suggesting a preserved immunomodulatory function. These results demonstrate that ferumoxides-based MRI cell tracking is well suited for non-invasive monitoring of NPC transplantation.
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Affiliation(s)
- Mikhal E Cohen
- Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah University Medical Center, Jerusalem, Israel
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Aschner M. Chapter 8 - Nanoparticles: Transport across the olfactory epithelium and application to the assessment of brain function in health and disease. PROGRESS IN BRAIN RESEARCH 2010; 180:141-52. [PMID: 20302833 DOI: 10.1016/s0079-6123(08)80008-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
The exciting advances within nanotechnology are beginning to be harnessed by the medical field. Nanoparticles have been used for drug delivery into the brain and have been explored for imaging, sensing, and analytical purposes. The science of nanoparticles encompasses a vast array of biological, chemical, physical, and engineering research, different aspects of which are specifically addressed in each of the chapters of this volume. Nanomaterials such as nanospheres, nanotubes, nanowires, fullerene derivatives (buckyballs), and quantum dots (Qdots) are at the forefront of scientific attention, as they provide new consumer products and advance the scientific development of novel analytical tools in medicine and in the physical sciences. This chapter will briefly survey some aspects of nanoparticle biology focusing on the following: (1) the role of olfactory nanoparticle transport into the central nervous system (CNS), both as a potential route for effective drug delivery and as a route for the passage of noxious substances into the brain proper; (2) nanoparticles as sensors of cell function and toxicity; and (3) some adverse effects of nanoparticles on the dysregulation of brain redox status.
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Affiliation(s)
- Michael Aschner
- Department of Pediatrics, Pharmacology and The Kennedy Center for Research on Human Development, Vanderbilt University School of Medicine, Nashville, TN, USA.
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Li SC, Tachiki LML, Luo J, Dethlefs BA, Chen Z, Loudon WG. A biological global positioning system: considerations for tracking stem cell behaviors in the whole body. Stem Cell Rev Rep 2010; 6:317-33. [PMID: 20237964 PMCID: PMC2887536 DOI: 10.1007/s12015-010-9130-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Many recent research studies have proposed stem cell therapy as a treatment for cancer, spinal cord injuries, brain damage, cardiovascular disease, and other conditions. Some of these experimental therapies have been tested in small animals and, in rare cases, in humans. Medical researchers anticipate extensive clinical applications of stem cell therapy in the future. The lack of basic knowledge concerning basic stem cell biology-survival, migration, differentiation, integration in a real time manner when transplanted into damaged CNS remains an absolute bottleneck for attempt to design stem cell therapies for CNS diseases. A major challenge to the development of clinical applied stem cell therapy in medical practice remains the lack of efficient stem cell tracking methods. As a result, the fate of the vast majority of stem cells transplanted in the human central nervous system (CNS), particularly in the detrimental effects, remains unknown. The paucity of knowledge concerning basic stem cell biology--survival, migration, differentiation, integration in real-time when transplanted into damaged CNS remains a bottleneck in the attempt to design stem cell therapies for CNS diseases. Even though excellent histological techniques remain as the gold standard, no good in vivo techniques are currently available to assess the transplanted graft for migration, differentiation, or survival. To address these issues, herein we propose strategies to investigate the lineage fate determination of derived human embryonic stem cells (hESC) transplanted in vivo into the CNS. Here, we describe a comprehensive biological Global Positioning System (bGPS) to track transplanted stem cells. But, first, we review, four currently used standard methods for tracking stem cells in vivo: magnetic resonance imaging (MRI), bioluminescence imaging (BLI), positron emission tomography (PET) imaging and fluorescence imaging (FLI) with quantum dots. We summarize these modalities and propose criteria that can be employed to rank the practical usefulness for specific applications. Based on the results of this review, we argue that additional qualities are still needed to advance these modalities toward clinical applications. We then discuss an ideal procedure for labeling and tracking stem cells in vivo, finally, we present a novel imaging system based on our experiments.
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Affiliation(s)
- Shengwen Calvin Li
- Center for Neuroscience and Stem Cell Research, Children's Hospital of Orange County Research Institute, University of California Irvine, 455 South Main Street, Orange, CA 92868, USA.
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Amemori T, Jendelová P, Růzicková K, Arboleda D, Syková E. Co-transplantation of olfactory ensheathing glia and mesenchymal stromal cells does not have synergistic effects after spinal cord injury in the rat. Cytotherapy 2010; 12:212-25. [PMID: 20196694 DOI: 10.3109/14653240903440103] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND AIMS Olfactory ensheathing glia (OEG) and mesenchymal stromal cells (MSC) are suitable candidates for transplantation therapy of spinal cord injury (SCI). Both facilitate functional improvement after SCI by producing trophic factors and cytokines. In this study, the co-transplantation of both types of cells was studied to clarify their additive and/ or synergistic effects on SCI. METHODS A balloon-induced compression lesion was used to produce SCI in rats. OEG, MSC or both OEG and MSC (3 x 10(5) cells of each cell type) were implanted by intraspinal injection 1 week after SCI. The effect of transplantation was assessed using behavioral, electrophysiologic and histologic methods. RESULTS Hindlimb function was examined with Basso, Beattie and Bresnahan (BBB) and Plantar tests. Improvement was found in all three groups of transplanted rats with different time-courses, but there was no significant difference among the groups at the end of the experiment. Motor-evoked potentials after SCI decreased in amplitude from 7 mV to 10 microV. Linear regression analysis showed a modest recovery in amplitude following transplantation, but no change in the control rats. Histologic findings showed that the white and gray matter were significantly spared by transplantation after SCI. CONCLUSIONS Functional improvement was achieved with transplantation of OEG and/or MSC, but the co-transplantation of OEG and MSC did not show synergistic effects. The poor migration of OEG and MSC might prevent their concerted action. Pre-treatment with a Rho antagonist and a combination of intraspinal and intravenous injection of the cells might be beneficial for SCI therapy.
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Affiliation(s)
- Takashi Amemori
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, 142 20, Prague, Czech Republic.
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El-Sadik AO, El-Ansary A, Sabry SM. Nanoparticle-labeled stem cells: a novel therapeutic vehicle. Clin Pharmacol 2010; 2:9-16. [PMID: 22291483 PMCID: PMC3262361 DOI: 10.2147/cpaa.s8931] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Nanotechnology has been described as a general purpose technology. It has already generated a range of inventions and innovations. Development of nanotechnology will provide clinical medicine with a range of new diagnostic and therapeutic opportunities such as medical imaging, medical diagnosis, drug delivery, and cancer detection and management. Nanoparticles such as manganese, polystyrene, silica, titanium oxide, gold, silver, carbon, quantum dots, and iron oxide have received enormous attention in the creation of new types of analytical tools for biotechnology and life sciences. Labeling of stem cells with nanoparticles overcame the problems in homing and fixing stem cells to their desired site and guiding extension of stem cells to specific directions. Although the biologic effects of some nanoparticles have already been assessed, information on toxicity and possible mechanisms of various particle types remains inadequate. The aim of this review is to give an overview of the mechanisms of internalization and distribution of nanoparticles inside stem cells, as well as the influence of different types of nanoparticles on stem cell viability, proliferation, differentiation, and cytotoxicity, and to assess the role of nanoparticles in tracking the fate of stem cells used in tissue regeneration.
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Affiliation(s)
- Abir O El-Sadik
- Stem Cell Unit, Anatomy Department, College of Medicine, Health Science Colleges, Cairo, Egypt.
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Abstract
Technical advances in nanotechnology are creating novel classes of MRI contrast-enhancing agents. These nanomaterials offer much higher relaxivities than most current clinical contrast agents, which translates into greater MRI contrast enhancement. These nanoscale agents also have the potential to revolutionize in vivo applications of contrast-enhanced MRI since they offer the multiple advantages of low toxicities, extremely high relaxivities and cell internalization capabilities. In this review, we discuss three types of such contrast agents currently in use or under development for medical imaging: small particles of iron oxide, fullerenes encapsulating Gd3+ ions (gadofullerenes) and single-walled carbon nanotube nanocapsules encapsulating Gd3+ ion clusters (gadonanotubes). The latest developments and projected future applications of these nanotechnology-inspired contrast agents in the field of medical imaging are also discussed.
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Superparamagnetic iron oxide nanoparticles: diagnostic magnetic resonance imaging and potential therapeutic applications in neurooncology and central nervous system inflammatory pathologies, a review. J Cereb Blood Flow Metab 2010; 30:15-35. [PMID: 19756021 PMCID: PMC2949106 DOI: 10.1038/jcbfm.2009.192] [Citation(s) in RCA: 303] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Superparamagnetic iron oxide nanoparticles have diverse diagnostic and potential therapeutic applications in the central nervous system (CNS). They are useful as magnetic resonance imaging (MRI) contrast agents to evaluate: areas of blood-brain barrier (BBB) dysfunction related to tumors and other neuroinflammatory pathologies, the cerebrovasculature using perfusion-weighted MRI sequences, and in vivo cellular tracking in CNS disease or injury. Novel, targeted, nanoparticle synthesis strategies will allow for a rapidly expanding range of applications in patients with brain tumors, cerebral ischemia or stroke, carotid atherosclerosis, multiple sclerosis, traumatic brain injury, and epilepsy. These strategies may ultimately improve disease detection, therapeutic monitoring, and treatment efficacy especially in the context of antiangiogenic chemotherapy and antiinflammatory medications. The purpose of this review is to outline the current status of superparamagnetic iron oxide nanoparticles in the context of biomedical nanotechnology as they apply to diagnostic MRI and potential therapeutic applications in neurooncology and other CNS inflammatory conditions.
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Balchandani P, Yamada M, Pauly J, Yang P, Spielman D. Self-refocused spatial-spectral pulse for positive contrast imaging of cells labeled with SPIO nanoparticles. Magn Reson Med 2009; 62:183-92. [PMID: 19449385 DOI: 10.1002/mrm.21973] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
MRI has been used extensively to noninvasively track the location of cells labeled with superparamagnetic iron-oxide nanoparticles (SPIOs) in vivo. Typically, SPIOs are employed as a negative contrast agent which makes it difficult to differentiate labeled cells from extraneous sources of inhomogeneity and actual voids in the image. As a result, several novel approaches have been put forth to obtain positive contrast from SPIOs. One technique proposed by Cunningham et al. utilizes spectrally selective pulses to excite and refocus spins in the vicinity of the SPIOs. Although the frequency selectivity of this technique provides effective positive contrast, the lack of slice selectivity results in interfering signal from sources of off-resonance outside the slice of interest. We have developed a self-refocused spatial-spectral (SR-SPSP) pulse to achieve slice-selective spin-echo imaging of off-resonant spins. Using a self-refocused pulse affords flexibility in echo-time selection since the spin echo may be placed at any time after the end of the pulse. The spatial selectivity achieved by the SR-SPSP RF pulse eliminates background signal from out-of-slice regions and reduces the on-resonant water suppression requirements. Phantom and in vivo data demonstrate that positive contrast and slice-selectivity are achieved using this novel RF pulse.
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Affiliation(s)
- Priti Balchandani
- Department of Radiology, Stanford University, Stanford, California 94305-5488, USA.
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Bernsen MR, Moelker AD, Wielopolski PA, van Tiel ST, Krestin GP. Labelling of mammalian cells for visualisation by MRI. Eur Radiol 2009; 20:255-74. [DOI: 10.1007/s00330-009-1540-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 06/11/2009] [Accepted: 06/23/2009] [Indexed: 12/21/2022]
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Gonzalez-Lara LE, Xu X, Hofstetrova K, Pniak A, Brown A, Foster PJ. In vivo magnetic resonance imaging of spinal cord injury in the mouse. J Neurotrauma 2009; 26:753-62. [PMID: 19397403 DOI: 10.1089/neu.2008.0704] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The feasibility of performing high-resolution in vivo magnetic resonance imaging (MRI) to visualize the injured mouse spinal cord using a three-dimensional (3D)-FIESTA (fast imaging employing steady state acquisition) pulse sequence, in a clip compression injury model, is presented. Images were acquired using a 3-Tesla clinical whole-body MR system equipped with a high-performance gradient coil insert. High-resolution mouse cord images were used to detect and monitor the cord lesions for 6 weeks after spinal cord injury (SCI). The epicenter of the injury appeared as a region of mixed signal intensities on day 2 post-SCI. Regions of signal hypointensity appeared at the lesion site by 2 weeks post-SCI and became more apparent with time. In some mice, large cyst-like lesions were detected rostral to the lesion epicenter, as early as 2 weeks post-SCI, and increased in volume with time. In addition, MRI was used to detect and monitor iron-labeled mesenchymal stem cells (MSCs) after their transplantation into the injured cord. MSCs appeared as large, obvious regions of signal loss in the cord, which decreased in size over time.
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Wakeman DR, Hofmann MR, Redmond DE, Teng YD, Snyder EY. Long-term multilayer adherent network (MAN) expansion, maintenance, and characterization, chemical and genetic manipulation, and transplantation of human fetal forebrain neural stem cells. ACTA ACUST UNITED AC 2009; Chapter 2:Unit2D.3. [PMID: 19455542 DOI: 10.1002/9780470151808.sc02d03s9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Human neural stem/precursor cells (hNSC/hNPC) have been targeted for application in a variety of research models and as prospective candidates for cell-based therapeutic modalities in central nervous system (CNS) disorders. To this end, the successful derivation, expansion, and sustained maintenance of undifferentiated hNSC/hNPC in vitro, as artificial expandable neurogenic micro-niches, promises a diversity of applications as well as future potential for a variety of experimental paradigms modeling early human neurogenesis, neuronal migration, and neurogenetic disorders, and could also serve as a platform for small-molecule drug screening in the CNS. Furthermore, hNPC transplants provide an alternative substrate for cellular regeneration and restoration of damaged tissue in neurodegenerative disorders such as Parkinson's disease and Alzheimer's disease. Human somatic neural stem/progenitor cells (NSC/NPC) have been derived from a variety of cadaveric sources and proven engraftable in a cytoarchitecturally appropriate manner into the developing and adult rodent and monkey brain while maintaining both functional and migratory capabilities in pathological models of disease. In the following unit, we describe a new procedure that we have successfully employed to maintain operationally defined human somatic NSC/NPC from developing fetal, pre-term post-natal, and adult cadaveric forebrain. Specifically, we outline the detailed methodology for in vitro expansion, long-term maintenance, manipulation, and transplantation of these multipotent precursors.
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Affiliation(s)
- Dustin R Wakeman
- University of California at San Diego, La Jolla, California, USA
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83
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Abstract
Cell therapy plays an important role in multidisciplinary management of the two major forms of central nervous system (CNS) injury, traumatic brain injury and spinal cord injury, which are caused by external physical trauma. Cell therapy for CNS disorders involves the use of cells of neural or non-neural origin to replace, repair, or enhance the function of the damaged nervous system and is usually achieved by transplantation of the cells, which are isolated and may be modified, e.g., by genetic engineering, when it may be referred to as gene therapy. Because the adult brain cells have a limited capacity to migrate to and regenerate at sites of injury, the use of embryonic stem cells that can be differentiated into various cell types as well as the use of neural stem cells has been explored. Preclinical studies and clinical trials are reviewed. Advantages as well as limitations are discussed. Cell therapy is promising for the treatment of CNS injury because it targets multiple mechanisms in a sustained manner. It can provide repair and regeneration of damaged tissues as well as prolonged release of neuroprotective and other therapeutic substances.
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84
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Boss A, Oppitz M, Wehrl HF, Rossi C, Feuerstein M, Claussen CD, Drews U, Pichler BJ, Schick F. Measurement of T1, T2, and magnetization transfer properties during embryonic development at 7 Tesla using the chicken model. J Magn Reson Imaging 2009; 28:1510-4. [PMID: 19025957 DOI: 10.1002/jmri.21601] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
PURPOSE To evaluate whether techniques of high field magnetic resonance imaging may be used to characterize embryonic tissue during proliferation and differentiation. MATERIALS AND METHODS Thirteen chicken embryos with incubation times between 5 days and 16 days have been measured in a small animal magnetic resonance imager (ClinScan, Bruker) at 7 Tesla using the built-in resonator. T1, T2-, and magnetization transfer imaging was performed using fast spin-echo with inversion recovery, half acquisition single shot turbo spin-echo, and spoiled gradient-echo sequences with and without off-resonance pulse, respectively. T1, T2, and magnetization transfer ratio (MTR) maps were calculated on a pixel-by-pixel basis. RESULTS T1-, T2-, and MTR maps showed good image quality allowing for delineation of embryonic organs. During embryonic development, a decrease of T1 and T2 relaxation times was found, whereas, embryonic tissue typically showed an increase of magnetization transfer, for example, liver properties at day 5: T1 = 2431 +/- 163 ms, T2 = 122 +/- 12 ms, MTR = 9.2 +/- 4.2%; liver properties at day 16: T1 = 1763 +/- 89 ms, T2 = 71 +/- 4 ms, MTR = 16.9 +/- 2.2%. CONCLUSION Embryonic tissues show changing relaxation and magnetization transfer properties during development, therefore, high field MRI seems suitable for characterization of tissue replacement derived from embryonic stem cells.
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Affiliation(s)
- Andreas Boss
- Section of Experimental Radiology, Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University of Tübingen, Tübingen, Germany.
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85
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Abstract
Noninvasive cellular imaging allows the real-time tracking of grafted cells as well as the monitoring of their migration. Several techniques for in vivo cellular imaging are available that permit the characterization of transplanted cells in a living organism, including magnetic resonance imaging (MRI), bioluminescence, positron emission tomography, and multiple photon microscopy. All of these methods, based on different principles, provide distinctive, usually complementary information. In this review, we will focus on cell tracking using MRI, since MRI is noninvasive, clinically transferable, and displays good resolution, ranging from 50microm in animal experiments up to 300microm using whole body clinical scanners. In addition to information about grafted cells, MRI provides information about the surrounding tissue (i.e., lesion size, edema, inflammation), which may negatively affect graft survival or the functional recovery of the tissue. Transplanted cells are labeled with MR contrast agents in vitro prior to transplantation in order to visualize them in the host tissue. The chapter will focus on the use of superparamagnetic iron oxide nanoparticles (SPIO), because they have strong effects on T2 relaxation yet do not affect cell viability, and will provide an overview of different modifications of SPIO and their use in MR tracking in living organisms.
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86
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Delcroix GJR, Jacquart M, Lemaire L, Sindji L, Franconi F, Le Jeune JJ, Montero-Menei CN. Mesenchymal and neural stem cells labeled with HEDP-coated SPIO nanoparticles: in vitro characterization and migration potential in rat brain. Brain Res 2008; 1255:18-31. [PMID: 19103182 DOI: 10.1016/j.brainres.2008.12.013] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 11/21/2008] [Accepted: 12/01/2008] [Indexed: 12/20/2022]
Abstract
Mesenchymal stem cells (MSC) may transdifferentiate into neural cells in vitro under the influence of matrix molecules and growth factors present in neurogenic niches. However, further experiments on the behavior of such stem cells remain to be done in vivo. In this study, rat MSC (rMSC) have been grafted in a neurogenic environment of the rat brain, the subventricular zone (SVZ), in order to detect and follow their migration using superparamagnetic iron oxide (SPIO) nanoparticles. We sought to characterize the potential effect of iron loading on the behavior of rMSC as well as to address the potential of rMSC to migrate when exposed to the adequate brain microenvironment. 1-hydroxyethylidene-1.1-bisphosphonic acid (HEDP)-coated SPIO nanoparticles efficiently labeled rMSC without significant adverse effects on cell viability and on the in vitro differentiation potential. In opposition to iron-labeled rat neural stem cells (rNSC), used as a positive control, iron-labeled rMSC did not respond to the SVZ microenvironment in vivo and did not migrate, unless a mechanical lesion of the olfactory bulb was performed. This confirmed the known potential of iron-labeled rMSC to migrate toward lesions and, as far as we know, this is the first study describing such a long distance migration from the SVZ toward the olfactory bulb through the rostral migratory stream (RMS).
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87
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Abstract
Hematopoietic, stromal and organ-specific stem cells are under evaluation for therapeutic efficacy in cell-based therapies of cardiac, neurological and other disorders. It is critically important to track the location of directly transplanted or infused cells that can serve as gene carrier/delivery vehicles for the treatment of disease processes and be able to noninvasively monitor the temporal and spatial homing of these cells to target tissues. Moreover, it is also necessary to determine their engraftment efficiency and functional capability following transplantation. There are various in vivo imaging modalities used to track the movement and incorporation of administered cells. Tagging stem cells with different contrast agents can make these cells probes for different imaging modalities. Recent reports have shown that stem cells labeled with iron oxides can be used as cellular MRI probes demonstrating the cell trafficking to target tissues. In this review, we will discuss the status and future prospect of stem cell tracking by cellular MRI for cell-based therapy.
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Affiliation(s)
- Ali S Arbab
- Henry Ford Hospital, Cellular & Molecular Imaging Laboratory,Department of Radiology, 1 Ford Place, 2F Detroit, MI 48202, USA.
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88
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Scholtes F, Phan-Ba R, Theunissen E, Adriaensens P, Brook G, Franzen R, Bouhy D, Gelan J, Martin D, Schoenen J. Rapid, postmortem 9.4 T MRI of spinal cord injury: correlation with histology and survival times. J Neurosci Methods 2008; 174:157-67. [PMID: 18708093 DOI: 10.1016/j.jneumeth.2008.06.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 06/16/2008] [Accepted: 06/17/2008] [Indexed: 10/21/2022]
Abstract
High field magnetic resonance imaging (MRI) has been increasingly used to assess experimental spinal cord injury (SCI). In the present investigation, after partial spinal cord injury and excision of the whole spine, pathological changes of the spinal cord were studied in spinal cord-spine blocks, from the acute to the chronic state (24 h to 5 months). Using proton density (PD) weighted imaging parameters at a magnetic field strength of 9.4 tesla (T), acquisition times ranging from <1 to 10 h per specimen were used. High in-plane pixel resolution (68 and 38 microm, respectively) was obtained, as well as high signal-to-noise ratio (SNR), which is important for optimal contrast settings. The quality of the resulting MR images was demonstrated by comparison with histology. The cord and the lesion were shown in their anatomical surroundings, detecting cord swelling in the acute phase (24 h to 1 week) and cord atrophy at the chronic stage. Haemorrhage was detected as hypo-intense signal. Oedema, necrosis and scarring were hyper-intense but could not be distinguished. Histology confirmed that the anatomical delimitation of the lesion extent by MRI was precise, both with high and moderate resolution. The present investigation thus demonstrates the precision of spinal cord MRI at different survival delays after compressive partial SCI and establishes efficient imaging parameters for postmortem PD MRI.
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Affiliation(s)
- Felix Scholtes
- Centre for Cellular and Molecular Neurobiology (CNCM), Department of Neuroanatomy, University of Liège, Sart Tilman B36, 4000 Liège, Belgium.
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89
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Winkler T, von Roth P, Schumann MR, Sieland K, Stoltenburg-Didinger G, Taupitz M, Perka C, Duda GN, Matziolis G. In Vivo Visualization of Locally Transplanted Mesenchymal Stem Cells in the Severely Injured Muscle in Rats. Tissue Eng Part A 2008; 14:1149-60. [DOI: 10.1089/ten.tea.2007.0179] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Tobias Winkler
- Departments of Orthopaedics and of Trauma and Reconstructive Surgery, Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Philipp von Roth
- Departments of Orthopaedics and of Trauma and Reconstructive Surgery, Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Maria Rose Schumann
- Departments of Orthopaedics and of Trauma and Reconstructive Surgery, Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Katharina Sieland
- Clinic for Radiology, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | | | - Matthias Taupitz
- Clinic for Radiology, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Carsten Perka
- Departments of Orthopaedics and of Trauma and Reconstructive Surgery, Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Georg N. Duda
- Departments of Orthopaedics and of Trauma and Reconstructive Surgery, Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Georg Matziolis
- Departments of Orthopaedics and of Trauma and Reconstructive Surgery, Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Berlin, Germany
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90
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Winkler T, Von Roth P, Schumann MR, Sieland K, Stoltenburg-Didinger G, Taupitz M, Perka C, Duda GN, Matziolis G. In VivoVisualization of Locally Transplanted Mesenchymal Stem Cells in the Severely Injured Muscle in Rats. Tissue Eng Part A 2008. [DOI: 10.1089/tea.2007.0179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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91
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Couillard-Despres S, Finkl R, Winner B, Ploetz S, Wiedermann D, Aigner R, Bogdahn U, Winkler J, Hoehn M, Aigner L. In Vivo Optical Imaging of Neurogenesis: Watching New Neurons in the Intact Brain. Mol Imaging 2008. [DOI: 10.2310/7290.2008.0004] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Sebastien Couillard-Despres
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Rudolf Finkl
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Beate Winner
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Sonja Ploetz
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Dirk Wiedermann
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Robert Aigner
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Ulrich Bogdahn
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Juergen Winkler
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Mathias Hoehn
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
| | - Ludwig Aigner
- From the Department of Neurology, University of Regensburg, Regensburg, Germany; Laboratory of Genetics, Salk Institute, La Jolla, CA; and In-vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research, Cologne, Germany
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Immune effects of mesenchymal stem cells: Implications for Charcot–Marie–Tooth disease. Cell Immunol 2008; 253:11-5. [DOI: 10.1016/j.cellimm.2008.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2008] [Revised: 05/28/2008] [Accepted: 06/04/2008] [Indexed: 12/12/2022]
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93
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Syková E, Jendelová P. Migration, fate and in vivo imaging of adult stem cells in the CNS. Cell Death Differ 2007; 14:1336-42. [PMID: 17396130 DOI: 10.1038/sj.cdd.4402140] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Adult stem cells have been intensively studied for their potential use in cell therapies for neurodegenerative diseases, ischemia and traumatic injuries. One of the most promising cell sources for autologous cell transplantation is bone marrow, containing a heterogenous cell population that can be roughly divided into hematopoietic stem and progenitor cells and mesenchymal stem cells (MSCs). MSCs are multipotent progenitor cells that, in the case of severe tissue ischemia or damage, can be attracted to the lesion site, where they can secrete bioactive molecules, either naturally or through genetic engineering. They can also serve as vehicles for delivering therapeutic agents. Mobilized from the marrow, sorted or expanded in culture, MSCs can be delivered to the damaged site by direct or systemic application. In addition, MSCs can be labeled with superparamagnetic nanoparticles that allow in vivo cell imaging. Magnetic resonance imaging (MRI) is thus a suitable method for in vivo cell tracking of transplanted cells in the host organism. This review will focus on cell labeling for MRI and the use of MSCs in experimental and clinical studies for the treatment of brain and spinal cord injuries.
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Affiliation(s)
- E Syková
- Department of Neuroscience, Institute of Experimental Medicine ASCR, Prague, Czech Republic.
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