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Naeimi A, Zaminy A, Amini N, Balabandi R, Golipoor Z. Effects of melatonin-pretreated adipose-derived mesenchymal stem cells ( MSC) in an animal model of spinal cord injury. BMC Neurosci 2022; 23:65. [PMCID: PMC9667651 DOI: 10.1186/s12868-022-00752-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 11/04/2022] [Indexed: 11/18/2022] Open
Abstract
Background One of the most serious nervous system diseases is spinal cord injury(SCI), which is increasing for various reasons. Although no definitive treatment has yet been identified for SCI, one possible treatment is adipose-derived stem cells(ADSCs). However, a key issue in transplantation is improving cells’ survival and function in the target tissue. Melatonin(MT) hormone with antioxidant properties can prolong cell survival and improve cell function. This study investigates the pre-conditioning of ADSCs with melatonin for enhancing the engraftment and neurological function of rats undergoing SCI. Methods 42 male Sprague–Dawley rats were divided into six groups, including Control, Sham, Model, Vehicle, and Lesion treatments A and B. After acquiring white adipose tissue, stem cells were evaluated by flow cytometry. SCI was then applied in Model, Vehicle, A, and B groups. Group A and B received ADSCs and ADSCs + melatonin, respectively, 1 week after SCI, but the vehicle received only an intravenous injection for simulation; The other groups were recruited for the behavioral test. Immunohistochemistry(IHC) was used to assess the engraftment and differentiation of ADSCs in the SCI site. Basso, Beattie, and Bresnahan's score was used to evaluate motor function between the six groups. Results Histological studies and cell count confirmed ADSCs implantation at the injury site, which was higher in the MT-ADSCs (P < 0.001). IHC revealed the differentiation of ADSCs and MT-ADSCs into neurons, astrocytes, and oligodendrocyte lineage cells, which were higher in MT-ADSCs. Functional improvement was observed in SCI + ADSCs and SCI + MT-ADSCs groups. Conclusion The pre-conditioning of ADSCs with melatonin positively affects engraftment and neuronal differentiation in SCI but does not impact performance improvement compared to the ADSCs.
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Affiliation(s)
- Arvin Naeimi
- grid.411874.f0000 0004 0571 1549Student Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Arash Zaminy
- grid.411874.f0000 0004 0571 1549Burn and Regenerative Medicine Research Center, Velayat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Naser Amini
- grid.411746.10000 0004 4911 7066Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Raziye Balabandi
- grid.411874.f0000 0004 0571 1549Student Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Zoleikha Golipoor
- grid.411874.f0000 0004 0571 1549Cellular and Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Abstract
Introduction: The use of cell-based therapies in the management of sports injuries of the upper limb is increasingly popular despite the limited scientific evidence available for their use. We aim to evaluate the evidence for the use of cell-based therapies in these injuries and recommend areas for further research.Areas covered: In accordance with a published protocol (PROSPERO; Registration No. CRD42020193258), a comprehensive search of the literature was performed using the MEDLINE and EMBASE databases from inception to June 2020. All human studies reporting on the clinical, histological, or radiological outcomes following the use of cell-based therapies in the management of epicondylitis or rotator cuff pathology were included in this study. This resulted in 22 studies being included in this review, all of which underwent risk of bias assessments.Expert opinion: The evidence for the use of cell-based therapies in upper limb sports injuries is limited and generally of low quality. Given the heterogeneity in the cell types used, their harvesting methods and cell amounts, future research should be targeted at developing standardization of the reporting of these studies and more direct comparative studies looking at the efficacy of the different cell types.
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Affiliation(s)
- Kwaku Baryeh
- Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK
| | - Vipin Asopa
- Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK
| | - Nardeen Kader
- Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK
| | - Nick Caplan
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - Nicola Maffulli
- Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Mile End Hospital, Queen Mary University of London, London, UK
| | - Deiary Kader
- Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK
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Bani Hamad FR, Rahat N, Shankar K, Tsouklidis N. Efficacy of Stem Cell Application in Diabetes Mellitus: Promising Future Therapy for Diabetes and Its Complications. Cureus 2021; 13:e13563. [PMID: 33815977 PMCID: PMC8007200 DOI: 10.7759/cureus.13563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Diabetes mellitus (DM) is a serious and common chronic disease with high morbidity and mortality rates. Recently, stem cell-based therapy has shown considerable promise as a future therapeutic modality for DM. This review aims to summarize the types of stem cells that have the most successful evidence in treating type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM), and also to assess the safety and efficacy of different types of stem cells in the treatment of DM. PubMed, MEDLINE, and PubMed Central databases were searched up to October 15, 2020, using medical subject heading (MeSH) terms. After application of inclusion criteria and exclusion criteria, 10 studies were included in our final review: six T1DM studies including 120 patients, and four T2DM studies including 65 patients. Our data showed that autologous and allogeneic stem cell therapy is a relatively safe and effective method for selected individuals with DM. The best therapeutic outcome was achieved by transplantation of bone marrow hemopoietic stem cells (BM-HSCs) for T1DM and bone marrow mononuclear cells (BM-MNCs) along with mesenchymal stromal cells (MSCs) for T2DM. However, patients with DKA are not a good candidate for stem cell transplantation. Further rigorous experiments are needed in order to be able to establish stem cell-based therapies as the future standard of care for treating DM.
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Affiliation(s)
- Faten R Bani Hamad
- Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Neelam Rahat
- Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Kavya Shankar
- Neurology, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Nicholas Tsouklidis
- Health Care Administration, University of Cincinnati Health, Cincinnati, USA.,Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA.,Medicine, Atlantic University School of Medicine, Gros Islet, LCA
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Arab KA, AlRuhaili A, AlJohany T, AlHammad RS. Melanoma and non-melanoma skin cancer among patients who attended at King Khalid University Hospital in Riyadh, Saudi Arabia from 2007 - 2018. Saudi Med J 2020; 41:709-714. [PMID: 32601638 PMCID: PMC7502929 DOI: 10.15537/smj.2020.7.25138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 04/10/2020] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES To assess the prevalence of melanoma and non-melanoma skin cancer for patients attended King Khalid University Hospital, Riyadh, Saudi Arabia. We are also assessing the most common category of skin cancer to be encountered among those patients. Methods: The authors conducted a retrospective study including all patients (Saudi and non-Saudi) who attended King Khalid University Hospital (KKUH) at the period of (2007-2018). Data were collected from archives of Pathology Department at KKUH and categorized into: melanoma skin cancer (MSC), non-melanoma skin cancer (NMSC), which included: basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), pre-neoplastic lesions, and non-neoplastic skin lesions. Results: A total of 111 patients were reported to have skin cancer out of 9828 cases, which had other skin pathology. Majority of cases were basal cell carcinoma with a total number of 76 (68.5%) of all cases. 18 patients (16.2%) were diagnosed with MSC. The remaining 17 patients (15.3%) were diagnosed with squamous cell carcinoma. Conclusion: Skin cancer prevalence and incidence is increasing worldwide. In our study, BCC was the most common type of skin cancer to be reported in our institute, which is similar to the majority of other international studies.
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Affiliation(s)
- Khalid A Arab
- Division of Plastic Surgery, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia. E-mail.
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5
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Nachlinger RJ, Kauschke V, Trinkaus K, Khassawna TE, Heiss C, Lips KS. Application of donepezil increased collagen 1 expression in mesenchymal stroma cells of an ovine osteoporosis model. J Musculoskelet Neuronal Interact 2018; 18:354-365. [PMID: 30179213 PMCID: PMC6146185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Donepezil inhibits the acetylcholine degradation molecule acetylcholinesterase (AChE). Clinical studies reported that Alzheimer's disease (AD) patients with hip fractures had improved bone quality and better fracture healing if they were treated with AD medication donepezil. We asked whether mesenchymal stroma cells (MSC) from an osteoporosis sheep model treated with donepezil increased their proliferation rate and mRNA expression. METHODS Sheep were divided into 4 groups: a) untreated control group, b) sheep with bilateral ovariectomy (OVX), c) sheep with OVX and malnutrition, and d) sheep with OVX, malnutrition, and application of corticosteroid. After 8 months MSC were isolated of iliac crest biopsy, treated with donepezil, and AChE activity, proliferation rate, and mRNA expression were analyzed. RESULTS Application of donepezil resulted in a significant decrease of AChE activity. Inhibition of AChE did not lead to a significant increase in proliferation. Expression of the osteogenic marker osteocalcin was not regulated by donepezil while the mRNA concentration of collagen was increased. CONCLUSION AChE inhibition via donepezil resulted in an increased synthesis of osteoid which consists mainly of collagen. Thus, we suppose that increased acetylcholine levels through AChE inhibition do not support MSC proliferation but osteogenic activity probably combined with osteogenic differentiation.
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Affiliation(s)
| | - Vivien Kauschke
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Germany
| | - Katja Trinkaus
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Germany
| | | | - Christian Heiss
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Germany,Department of Trauma, Hand, and Reconstructive Surgery Giessen, University Hospital of Giessen-Marburg, Germany
| | - Katrin Susanne Lips
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Germany,Corresponding author: Katrin Susanne Lips, Experimental Trauma Surgery, Justus-Liebig-University Giessen, Aulweg 128, 35392 Giessen, Germany E-mail:
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6
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Moratin H, Scherzad A, Gehrke T, Ickrath P, Radeloff K, Kleinsasser N, Hackenberg S. Toxicological characterization of ZnO nanoparticles in malignant and non-malignant cells. Environ Mol Mutagen 2018; 59:247-259. [PMID: 29150876 DOI: 10.1002/em.22156] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/01/2017] [Accepted: 10/20/2017] [Indexed: 06/07/2023]
Abstract
The increasing usage of zinc oxide nanoparticles (ZnO-NPs) in industrial applications as well as in consumer products raises concern regarding their potential adverse effects to a greater extend. Numerous studies have demonstrated toxic properties of NPs, however there is still a lack of knowledge concerning the underlying mechanisms. This study was designed to systematically investigate cytotoxicity, apoptosis, cell cycle alterations, and genotoxicity induced by ZnO-NP. Moreover, it was an aim of the investigations to specify the diverse effects of nanoparticle exposure in malignant in comparison with non-malignant cells. Therefore, human head and neck squamous cell carcinoma-derived FaDu cells were incubated with 4-20 µg/ml of ZnO-NPs for 1-48 hr and tested for cell viability, cell cycle alterations, apoptosis and caspase-3 gene expression as a sensitive marker of molecular apoptotic processes with regard to time- and dose-dependent effects. Human mesenchymal bone marrow stem cells were used as non-malignant representatives to examine oxidative stress-related genotoxicity. Results showed a significant reduction in cell viability as well as dose- and time-dependent increase of apoptotic cells following nanoparticle treatment. Likewise, caspase-3 gene expression enhanced already before first apoptotic cells were detectable. It could be observed that doses that were cytotoxic in tumor cells did not reduce viability in stem cells. However, the same concentrations already induced significant DNA damage. The findings of the study suggest to keep a more critical eye on the use of nanoparticles as anti-cancer agents. Yet, additional in vivo studies are needed to assess safety concerns for consumers and patients. Environ. Mol. Mutagen. 59:247-259, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Helena Moratin
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University Hospital Wuerzburg, Germany
| | - Agmal Scherzad
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University Hospital Wuerzburg, Germany
| | - Thomas Gehrke
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University Hospital Wuerzburg, Germany
| | - Pascal Ickrath
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University Hospital Wuerzburg, Germany
| | - Katrin Radeloff
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University Hospital Wuerzburg, Germany
| | - Norbert Kleinsasser
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University Hospital Wuerzburg, Germany
| | - Stephan Hackenberg
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University Hospital Wuerzburg, Germany
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7
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D'souza N, Rossignoli F, Golinelli G, Grisendi G, Spano C, Candini O, Osturu S, Catani F, Paolucci P, Horwitz EM, Dominici M. Mesenchymal stem/stromal cells as a delivery platform in cell and gene therapies. BMC Med 2015; 13:186. [PMID: 26265166 PMCID: PMC4534031 DOI: 10.1186/s12916-015-0426-0] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 07/17/2015] [Indexed: 02/07/2023] Open
Abstract
Regenerative medicine relying on cell and gene therapies is one of the most promising approaches to repair tissues. Multipotent mesenchymal stem/stromal cells (MSC), a population of progenitors committing into mesoderm lineages, are progressively demonstrating therapeutic capabilities far beyond their differentiation capacities. The mechanisms by which MSC exert these actions include the release of biomolecules with anti-inflammatory, immunomodulating, anti-fibrogenic, and trophic functions. While we expect the spectra of these molecules with a therapeutic profile to progressively expand, several human pathological conditions have begun to benefit from these biomolecule-delivering properties. In addition, MSC have also been proposed to vehicle genes capable of further empowering these functions. This review deals with the therapeutic properties of MSC, focusing on their ability to secrete naturally produced or gene-induced factors that can be used in the treatment of kidney, lung, heart, liver, pancreas, nervous system, and skeletal diseases. We specifically focus on the different modalities by which MSC can exert these functions. We aim to provide an updated understanding of these paracrine mechanisms as a prerequisite to broadening the therapeutic potential and clinical impact of MSC.
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Affiliation(s)
- Naomi D'souza
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Filippo Rossignoli
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Giulia Golinelli
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Giulia Grisendi
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Carlotta Spano
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Olivia Candini
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Satoru Osturu
- The Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, Departments of Pediatrics and Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Fabio Catani
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Paolo Paolucci
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy
| | - Edwin M Horwitz
- The Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, Departments of Pediatrics and Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Massimo Dominici
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Via del Pozzo 71, 41124, Modena, Italy.
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8
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Biemann R, Fischer B, Navarrete Santos A. Adipogenic effects of a combination of the endocrine-disrupting compounds bisphenol A, diethylhexylphthalate, and tributyltin. Obes Facts 2014; 7:48-56. [PMID: 24503497 PMCID: PMC5644809 DOI: 10.1159/000358913] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 09/04/2013] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The food contaminants bisphenol A (BPA), diethylhexylphthalate (DEHP), and tributyltin (TBT) are potent endocrine-disrupting compounds (EDC) known to interfere with adipogenesis. EDC usually act in mixtures and not as single compounds. The aim of this study was to investigate the effects of a simultaneous exposure of BPA, DEHP, and TBT on mesenchymal stem cell differentiation into adipocytes. METHODS Multipotent murine mesenchymal stem cells (C3H10T1/2) were exposed to EDC mixtures in high concentrations, i.e. MIX-high (10 µmol/l BPA, 100 µmol/l DEHP, 100 nmol/l TBT), and in environmentally relevant concentrations, i.e. MIX-low (10 nmol/l BPA, 100 nmol/l DEHP, 1 nmol/l TBT). The exposure was performed either for the entire culture time (0-12 days) or at distinct stages of adipogenic differentiation. At day 12 of cell culture, the amount of adipocytes, triglyceride content (TG), and adipogenic marker gene expression were analyzed. RESULTS MIX-high increased the development of adipocytes and the expression of adipogenic marker genes independently of the exposure window. The total TG amount was not increased. The low-concentrated EDC mixture had no obvious impact on adipogenesis. CONCLUSION In EDC mixtures, the adipogenic effect of TBT and DEHP predominates single effects of BPA. Mixture effects of EDC are not deducible from single compound experiments.
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Affiliation(s)
- Ronald Biemann
- *Ronald Biemann, Department of Clinical Chemistry and Pathobiochemistry, Otto-von-Guericke-University, Leipziger Straße 44, 39120 Magdeburg (Germany),
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9
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Ghose D, Wallace MT. Heterogeneity in the spatial receptive field architecture of multisensory neurons of the superior colliculus and its effects on multisensory integration. Neuroscience 2013; 256:147-62. [PMID: 24183964 DOI: 10.1016/j.neuroscience.2013.10.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 10/08/2013] [Accepted: 10/22/2013] [Indexed: 11/15/2022]
Abstract
Multisensory integration has been widely studied in neurons of the mammalian superior colliculus (SC). This has led to the description of various determinants of multisensory integration, including those based on stimulus- and neuron-specific factors. The most widely characterized of these illustrate the importance of the spatial and temporal relationships of the paired stimuli as well as their relative effectiveness in eliciting a response in determining the final integrated output. Although these stimulus-specific factors have generally been considered in isolation (i.e., manipulating stimulus location while holding all other factors constant), they have an intrinsic interdependency that has yet to be fully elucidated. For example, changes in stimulus location will likely also impact both the temporal profile of response and the effectiveness of the stimulus. The importance of better describing this interdependency is further reinforced by the fact that SC neurons have large receptive fields, and that responses at different locations within these receptive fields are far from equivalent. To address these issues, the current study was designed to examine the interdependency between the stimulus factors of space and effectiveness in dictating the multisensory responses of SC neurons. The results show that neuronal responsiveness changes dramatically with changes in stimulus location - highlighting a marked heterogeneity in the spatial receptive fields of SC neurons. More importantly, this receptive field heterogeneity played a major role in the integrative product exhibited by stimulus pairings, such that pairings at weakly responsive locations of the receptive fields resulted in the largest multisensory interactions. Together these results provide greater insight into the interrelationship of the factors underlying multisensory integration in SC neurons, and may have important mechanistic implications for multisensory integration and the role it plays in shaping SC-mediated behaviors.
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Affiliation(s)
- D Ghose
- Department of Psychology, Vanderbilt University, Nashville, TN, United States; Kennedy Center for Research on Human Development, Vanderbilt University, Nashville, TN, United States.
| | - M T Wallace
- Department of Psychology, Vanderbilt University, Nashville, TN, United States; Kennedy Center for Research on Human Development, Vanderbilt University, Nashville, TN, United States; Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, United States; Department of Psychiatry, Vanderbilt University, Nashville, TN, United States; Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, United States
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10
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Eckert MA, Vu Q, Xie K, Yu J, Liao W, Cramer SC, Zhao W. Evidence for high translational potential of mesenchymal stromal cell therapy to improve recovery from ischemic stroke. J Cereb Blood Flow Metab 2013; 33:1322-34. [PMID: 23756689 PMCID: PMC3764389 DOI: 10.1038/jcbfm.2013.91] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 05/06/2013] [Accepted: 05/08/2013] [Indexed: 12/27/2022]
Abstract
Although ischemic stroke is a major cause of morbidity and mortality, current therapies benefit only a small proportion of patients. Transplantation of mesenchymal stromal cells (MSC, also known as mesenchymal stem cells or multipotent stromal cells) has attracted attention as a regenerative therapy for numerous diseases, including stroke. Mesenchymal stromal cells may aid in reducing the long-term impact of stroke via multiple mechanisms that include induction of angiogenesis, promotion of neurogenesis, prevention of apoptosis, and immunomodulation. In this review, we discuss the clinical rationale of MSC for stroke therapy in the context of their emerging utility in other diseases, and their recent clinical approval for treatment of graft-versus-host disease. An analysis of preclinical studies examining the effects of MSC therapy after ischemic stroke indicates near-universal agreement that MSC have significant favorable effect on stroke recovery, across a range of doses and treatment time windows. These results are interpreted in the context of completed and ongoing human clinical trials, which provide support for MSC as a safe and potentially efficacious therapy for stroke recovery in humans. Finally, we consider principles of brain repair and manufacturing considerations that will be useful for effective translation of MSC from the bench to the bedside for stroke recovery.
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Affiliation(s)
- Mark A Eckert
- Departments of Pharmaceutical Sciences and Biomedical Engineering, Sue and Bill Gross Stem Cell Research Center, Chao Family Comprehensive Cancer Center, University of California, Irvine, California, USA
| | - Quynh Vu
- Department of Neurology, Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, California, USA
| | - Kate Xie
- Department of Neurology, Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, California, USA
| | - Jingxia Yu
- Departments of Pharmaceutical Sciences and Biomedical Engineering, Sue and Bill Gross Stem Cell Research Center, Chao Family Comprehensive Cancer Center, University of California, Irvine, California, USA
| | - Wenbin Liao
- Department of Pathology, State University of New York at Stony Brook, Stony Brook, New York, USA
| | - Steven C Cramer
- Departments of Neurology and Anatomy and Neurobiology, Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, California, USA
| | - Weian Zhao
- Departments of Pharmaceutical Sciences and Biomedical Engineering, Sue and Bill Gross Stem Cell Research Center, Chao Family Comprehensive Cancer Center, University of California, Irvine, California, USA
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Abstract
OBJECTIVE Strategies to improve cartilage repair tissue quality after bone marrow cell-based procedures may reduce later development of osteoarthritis. Doxycycline is inexpensive, well-tolerated, and has been shown to reduce matrix-metalloproteinases (MMPs) and osteoarthritis progression. This study tests the hypotheses that doxycycline reduces MMP, enhances chondrogenesis of human bone marrow-derived mesenchymal stem cells (hMSC), and improves in vivo cartilage repair. DESIGN Ninety hMSC pellets were cultured in chondrogenic media with either 0-, 1- or 2-μg/mL doxycycline. Pellets were evaluated with stereomicroscopy, proteoglycan assay, qRT-PCR, and histology. Osteochondral defects (OCDs) were created in the trochlear grooves of 24-Sprague-Dawley rats treated with/without oral doxycycline. Rats were sacrificed at 12-weeks and repair tissues were examined grossly and histologically. RESULTS hMSC pellets with 1-μg/mL (P = 0.014) and 2-μg/mL (P = 0.002) doxycycline had larger areas than pellets without doxycycline. hMSC pellets with 2-μg/mL doxycycline showed reduced mmp-13 mRNA (P = 0.010) and protein at 21-days. Proteoglycan, DNA contents, and mRNA expressions of chondrogenic genes were similar (P > 0.05). For the in vivo study, while the histological scores were similar between the two groups (P = 0.116), the gross scores of the OCD repair tissues in doxycycline-treated rats were higher at 12-weeks (P = 0.017), reflective of improved repair quality. The doxycycline-treated repairs also showed lower MMP-13 protein (P = 0.029). CONCLUSIONS This study shows that doxycycline improves hMSC chondrogenesis and decreases MMP-13 in pellet cultures and within rat OCDs. Doxycycline exerted no negative effect on multiple measures of chondrogenesis and cartilage repair. These data support potential use of doxycycline to improve cartilage repair to delay the onset of osteoarthritis.
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Affiliation(s)
- Hannah H. Lee
- Cartilage Restoration Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pennsylvania, USA,Department of Bioengineering, University of Pittsburgh, Pennsylvania, USA
| | - Michael J. O'Malley
- Cartilage Restoration Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pennsylvania, USA
| | - Nicole A. Friel
- Cartilage Restoration Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pennsylvania, USA
| | - Constance R. Chu
- Cartilage Restoration Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pennsylvania, USA,Department of Bioengineering, University of Pittsburgh, Pennsylvania, USA
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Abstract
Voiding dysfunction comprises a variety of disorders, including stress urinary incontinence and overactive bladder, and affects millions of men and women worldwide. Erectile dysfunction (ED) also decreases quality of life for millions of men, as well as for their partners. Advanced age and diabetes are common comorbidities that can exacerbate and negatively impact upon the development of these disorders. Therapies that target the pathophysiology of these conditions to halt progression are not currently available. However, stem cell therapy could fill this therapeutic void. Stem cells can reduce inflammation, prevent fibrosis, promote angiogenesis, recruit endogenous progenitor cells, and differentiate to replace damaged cells. Adult multipotent stem cell therapy, in particular, has shown promise in case reports and preclinical animal studies. Stem cells also have a role in urological tissue engineering for ex vivo construction of bladder wall and urethral tissue (using a patient's own cells) prior to transplantation. More recent studies have focused on bioactive factor secretion and homing of stem cells. In the future, clinicians are likely to utilize allogeneic stem cell sources, intravenous systemic delivery, and ex vivo cell enhancement to treat voiding dysfunction and ED.
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Affiliation(s)
- Martin Vaegler
- Department of Urology, University of Tuebingen, Hoppe-Seyler-Strasse 3, D72076 Tuebingen, Germany
| | - Andrew T Lenis
- The Cleveland Clinic, Case Western Reserve University School of Medicine, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Lisa Daum
- Department of Urology, University of Tuebingen, Hoppe-Seyler-Strasse 3, D72076 Tuebingen, Germany
| | - Bastian Amend
- Department of Urology, University of Tuebingen, Hoppe-Seyler-Strasse 3, D72076 Tuebingen, Germany
| | - Arnulf Stenzl
- Department of Urology, University of Tuebingen, Hoppe-Seyler-Strasse 3, D72076 Tuebingen, Germany
| | - Patricia Toomey
- Department of Urology, University of Tuebingen, Hoppe-Seyler-Strasse 3, D72076 Tuebingen, Germany
| | - Markus Renninger
- Department of Urology, University of Tuebingen, Hoppe-Seyler-Strasse 3, D72076 Tuebingen, Germany
| | - Margot S Damaser
- The Cleveland Clinic, Case Western Reserve University School of Medicine, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Karl-Dietrich Sievert
- Department of Urology, University of Tuebingen, Hoppe-Seyler-Strasse 3, D72076 Tuebingen, Germany
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13
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Burgess A, Vanella L, Bellner L, Schwartzman ML, Abraham NG. Epoxyeicosatrienoic acids and heme oxygenase-1 interaction attenuates diabetes and metabolic syndrome complications. Prostaglandins Other Lipid Mediat 2012; 97:1-16. [PMID: 22100745 PMCID: PMC3261364 DOI: 10.1016/j.prostaglandins.2011.10.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 10/05/2011] [Accepted: 10/17/2011] [Indexed: 12/19/2022]
Abstract
MSCs are considered to be the natural precursors to adipocyte development through the process of adipogenesis. A link has been established between decreased protective effects of EETs or HO-1 and their interaction in metabolic syndrome. Decreases in HO-1 or EET were associated with an increase in adipocyte stem cell differentiation and increased levels of inflammatory cytokines. EET agonist (AKR-I-27-28) inhibited MSC-derived adipocytes and decreased the levels of inflammatory cytokines. We further describe the role of CYP-epoxygenase expression, HO expression, and circulating cytokine levels in an obese mouse, ob/ob(-/-) mouse model. Ex vivo measurements of EET expression within MSCs derived from ob/ob(-/-) showed decreased levels of EETs that were increased by HO induction. This review demonstrates that suppression of HO and EET systems exist in MSCs prior to the development of adipocyte dysfunction. Further, adipocyte dysfunction can be ameliorated by induction of HO-1 and CYP-epoxygenase, i.e. EET.
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Affiliation(s)
- Angela Burgess
- Department of Physiology and Pharmacology, University of Toledo College of Medicine, OH 43614
| | - Luca Vanella
- Department of Physiology and Pharmacology, University of Toledo College of Medicine, OH 43614
| | - Lars Bellner
- Department of Pharmacology, New York Medical College, Valhalla, NY, 10595
| | | | - Nader G. Abraham
- Department of Physiology and Pharmacology, University of Toledo College of Medicine, OH 43614
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14
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Thibault RA, Mikos AG, Kasper FK. Protein and mineral composition of osteogenic extracellular matrix constructs generated with a flow perfusion bioreactor. Biomacromolecules 2011; 12:4204-12. [PMID: 22040097 PMCID: PMC3238915 DOI: 10.1021/bm200975a] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This study investigated the temporal composition of an osteogenic extracellular matrix construct generated by culturing mesenchymal stem cells in an electrospun biodegradable poly(ε-caprolactone) fiber mesh scaffold within a flow perfusion bioreactor. Constructs of different extracellular matrix maturities were analyzed for their protein and mineral composition at several culture durations by liquid chromatography-tandem mass spectrometry, scanning electron microscopy, energy-dispersive X-ray diffraction, X-ray diffraction, and calcium and phosphate assays. The analysis revealed that at short culture durations the cells deposited cellular adhesion proteins as a prerequisite protein network for further bone formation. At the later culture durations, the extracellular matrix was composed of collagen 1, hydroxyapatite, matrix remodeling proteins, and regulatory proteins. These results suggest that the later culture duration constructs would allow for improved bone regeneration due to the ability to mineralize and the capabilities for future remodeling.
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Affiliation(s)
- Richard A. Thibault
- Department of Bioengineering Rice University P.O. Box 1892, MS-142 Houston, TX 77251-1892
| | - Antonios G. Mikos
- Department of Bioengineering Rice University P.O. Box 1892, MS-142 Houston, TX 77251-1892
| | - F. Kurtis Kasper
- Department of Bioengineering Rice University P.O. Box 1892, MS-142 Houston, TX 77251-1892
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15
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Abstract
Tissue resident mesenchymal stem cells (MSC) are important regulators of tissue repair or regeneration, fibrosis, inflammation, angiogenesis and tumor formation. Taken together these studies suggest that resident lung MSC play a role during pulmonary tissue homeostasis, injury and repair during diseases such as pulmonary fibrosis (PF) and arterial hypertension (PAH). Here we describe a technology to define a population of resident lung MSC. The definition of this population in vivo pulmonary tissue using a define set of markers facilitates the repeated isolation of a well-characterized stem cell population by flow cytometry and the study of a specific cell type and function.
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Affiliation(s)
- Kelsey S Chow
- Charles C. Gates Regenerative Medicine and Stem Cell Biology Program, University of Colorado Denver, USA
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16
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Papathanasopoulos A, Kouroupis D, Henshaw K, McGonagle D, Jones EA, Giannoudis PV. Effects of antithrombotic drugs fondaparinux and tinzaparin on in vitro proliferation and osteogenic and chondrogenic differentiation of bone-derived mesenchymal stem cells. J Orthop Res 2011; 29:1327-35. [PMID: 21432897 PMCID: PMC3193377 DOI: 10.1002/jor.21405] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Accepted: 02/10/2011] [Indexed: 02/04/2023]
Abstract
An unexpected side effect of some classes of anticoagulants has been osteoporosis which may be, at least in part, related to deranged mesenchymal stem cell (MSC) function. The aim of the present study was to compare the effect of fondaparinux (FDP), a novel antithrombotic with a traditional widely used low molecular weight heparin, tinzaparin (TZP) on MSC proliferation and differentiation. MSCs were isolated from trabecular bone of 14 trauma patients by a collagenase-based digestion procedure and expanded in standard conditions until passage 3. Proliferation and differentiation of MSCs to chondrocytes and osteoblasts was assessed with or without the addition of FDP and TZP using standard in vitro assays and a broad range of drug concentrations. Flow cytometry was used for MSC phenotyping. In the age studied group (17-74 years old) the MSC frequency in collagenase-released fractions was 641/10(6) cells (range 110-2,158) and their growth characteristics were ∼4 days/population doubling. Cultures had a standard MSC phenotype (CD73+, CD105+, CD146+, CD106+, and CD166+). Cell proliferation was assessed by both colony-forming unit-fibroblast (CFU-F) and colorimetric tetrazolium salt XTT assays. In both assays, MSC proliferation was inhibited by the addition of TZP, particularly at high concentrations. In contrast, FDP had no effect on MSC proliferation. Osteogenic differentiation and chondrogenic differentiation were not affected by the addition of either TZP or FDP. Whilst MSC proliferation, but not differentiation, is negatively affected by TZP, there was no evidence for adverse effects of FDP in this in vitro model system which argues well for its use in the orthopedic setting.
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Affiliation(s)
| | - Dimitrios Kouroupis
- LIMM, Section of Musculoskeletal Disease, University of Leeds, Leeds, United Kingdom
| | - Karen Henshaw
- LIMM, Section of Musculoskeletal Disease, University of Leeds, Leeds, United Kingdom
| | - Dennis McGonagle
- LIMM, Section of Musculoskeletal Disease, University of Leeds, Leeds, United Kingdom
| | - Elena A. Jones
- LIMM, Section of Musculoskeletal Disease, University of Leeds, Leeds, United Kingdom
| | - Peter V. Giannoudis
- LIMM, Section of Musculoskeletal Disease, University of Leeds, Leeds, United Kingdom
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17
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Quante M, Tu SP, Tomita H, Gonda T, Wang SS, Takashi S, Baik GH, Shibata W, DiPrete B, Betz KS, Friedman R, Varro A, Tycko B, Wang TC. Bone marrow-derived myofibroblasts contribute to the mesenchymal stem cell niche and promote tumor growth. Cancer Cell 2011; 19:257-72. [PMID: 21316604 PMCID: PMC3060401 DOI: 10.1016/j.ccr.2011.01.020] [Citation(s) in RCA: 806] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 07/23/2010] [Accepted: 01/10/2011] [Indexed: 02/08/2023]
Abstract
Carcinoma-associated fibroblasts (CAFs) that express α-smooth muscle actin (αSMA) contribute to cancer progression, but their precise origin and role are unclear. Using mouse models of inflammation-induced gastric cancer, we show that at least 20% of CAFs originate from bone marrow (BM) and derive from mesenchymal stem cells (MSCs). αSMA+ myofibroblasts (MFs) are niche cells normally present in BM and increase markedly during cancer progression. MSC-derived CAFs that are recruited to the dysplastic stomach express IL-6, Wnt5α and BMP4, show DNA hypomethylation, and promote tumor growth. Moreover, CAFs are generated from MSCs and are recruited to the tumor in a TGF-β- and SDF-1α-dependent manner. Therefore, carcinogenesis involves expansion and relocation of BM-niche cells to the tumor to create a niche to sustain cancer progression.
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Affiliation(s)
- Michael Quante
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Shui Ping Tu
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
- Susan L. Cullman Laboratory for Cancer Research, Department of Chemical Biology, Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Hiroyuki Tomita
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Tamas Gonda
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
- Institute for Cancer Genetics and Department of Pathology, Columbia University, New York, NY, USA
| | - Sophie S.W. Wang
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Shigeo Takashi
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Gwang Ho Baik
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Wataru Shibata
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Bethany DiPrete
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Kelly S. Betz
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Richard Friedman
- Department of Biomedical Informatics, Columbia University, New York, NY, USA
| | - Andrea Varro
- Department of Physiological Laboratory, School of Biomedical Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - Benjamin Tycko
- Institute for Cancer Genetics and Department of Pathology, Columbia University, New York, NY, USA
| | - Timothy C. Wang
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
- Corresponding author: Timothy Cragin Wang M.D., Division of Digestive and Liver Diseases, Dorothy L. and Daniel H. Silberberg Professor of Medicine, Columbia University Medical Center,
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18
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Zhao L, Huang J, Guo R, Wang Y, Chen D, Xing L. Smurf1 inhibits mesenchymal stem cell proliferation and differentiation into osteoblasts through JunB degradation. J Bone Miner Res 2010; 25:1246-56. [PMID: 20200942 PMCID: PMC3153132 DOI: 10.1002/jbmr.28] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Ubiquitin ligase Smurf1-deficient mice develop an increased-bone-mass phenotype in an age-dependent manner. It was reported that such a bone-mass increase is related to enhanced activities of differentiated osteoblasts. Although osteoblasts are of mesenchymal stem cell (MSC) origin and MSC proliferation and differentiation can have significant impacts on bone formation, it remains largely unknown whether regulation of MSCs plays a role in the bone-mass increase of Smurf1-deficient mice. In this study we found that bone marrow mesenchymal progenitor cells from Smurf1(-/-) mice form significantly increased alkaline phosphatase-positive colonies, indicating roles of MSC proliferation and differentiation in bone-mass accrual of Smurf1(-/-) mice. Interestingly, Smurf1(-/-) cells have an elevated protein level of AP-1 transcription factor JunB. Biochemical experiments demonstrate that Smurf1 interacts with JunB through the PY motif and targets JunB protein for ubiquitination and proteasomal degradation. Indeed, Smurf1-deficient MSCs have higher proliferation rates, consistent with the facts that cyclin D1 mRNA and protein both are increased in Smurf1(-/-) cells and JunB can induce cyclinD1 promoter. Moreover, JunB overexpression induces osteoblast differentiation, shown by higher expression of osteoblast markers, and JunB knock-down not only decreases osteoblast differentiation but also restores the osteogenic potential to wild-type level in Smurf1(-/-) cells. In conclusion, our results suggest that Smurf1 negatively regulates MSC proliferation and differentiation by controlling JunB turnover through an ubiquitin-proteasome pathway.
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Affiliation(s)
- Lan Zhao
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY 14642, USA
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19
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Barbagallo I, Vanella A, Peterson SJ, Kim DH, Tibullo D, Giallongo C, Vanella L, Parrinello N, Palumbo GA, Di Raimondo F, Abraham NG, Asprinio D. Overexpression of heme oxygenase-1 increases human osteoblast stem cell differentiation. J Bone Miner Metab 2010; 28:276-88. [PMID: 19924377 PMCID: PMC3073406 DOI: 10.1007/s00774-009-0134-y] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Accepted: 09/27/2009] [Indexed: 10/20/2022]
Abstract
Human bone marrow mesenchymal stem cells (MSCs) are pleiotrophic cells that differentiate to either adipocytes or osteoblasts as a result of crosstalk by specific signaling pathways including heme oxygenase (HO)-1/-2 expression. We examined the effect of inducers of HO-1 expression and inhibitors of HO activity on MSC differentiation to the osteoblast and following high glucose exposure. MSC cultured in osteogenic medium increased expression of osteonectin, Runt-related transcription factor 2 (RUNX-2), osteocalcin, and alkaline phosphatase. HO-1 expression during differentiation was initially decreased and then followed by a rebound increase after 15 days of culture. Additionally, the effect of HO-1 on osteoblasts appears different to that seen in adipocyte stem cells. On addition of a cobalt compound, the resultant induction of HO-1 decreases adipogenesis. Moreover, glucose (30 mM) inhibited osteoblast differentiation, as evidenced by decreased bone morphogenetic protein (BMP)-2, osteonectin, osteocalcin, and osteoprotegerin (OPG). In contrast, MSC-derived adipocytes were increased by glucose. Increased HO-1 expression increased the levels of osteonectin, OPG, and BMP-2. Inhibition of HO activity prevented the increase in osteonectin and potentiated the decrease of osteocalcin and OPG in cells exposed to high glucose levels. Furthermore, targeting HO-1 expression increased pAMPK and endothelial nitric oxide synthase (eNOS) and restored osteoblastic markers. Our findings suggest that targeting HO-1 gene expression attenuates the hyperglycemia-mediated decrease in MSC-derived osteoblast differentiation. Finally, the mechanism underlying the HO-1-specific cell effect on osteoblasts and adipocytes is yet to be explored. Thus, the targeting of HO-1 gene expression presents a portal to increase osteoblast function and differentiation and attenuate osteoporosis by promoting bone formation.
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Affiliation(s)
- Ignazio Barbagallo
- Department of Biological Chemistry, Medical Chemistry and Molecular Biology, University of Catania, Catania, Italy
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