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Wang S, He Q, Qu Y, Yin W, Zhao R, Wang X, Yang Y, Guo ZN. Emerging strategies for nerve repair and regeneration in ischemic stroke: neural stem cell therapy. Neural Regen Res 2024; 19:2430-2443. [PMID: 38526280 PMCID: PMC11090435 DOI: 10.4103/1673-5374.391313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/26/2023] [Accepted: 11/10/2023] [Indexed: 03/26/2024] Open
Abstract
Ischemic stroke is a major cause of mortality and disability worldwide, with limited treatment options available in clinical practice. The emergence of stem cell therapy has provided new hope to the field of stroke treatment via the restoration of brain neuron function. Exogenous neural stem cells are beneficial not only in cell replacement but also through the bystander effect. Neural stem cells regulate multiple physiological responses, including nerve repair, endogenous regeneration, immune function, and blood-brain barrier permeability, through the secretion of bioactive substances, including extracellular vesicles/exosomes. However, due to the complex microenvironment of ischemic cerebrovascular events and the low survival rate of neural stem cells following transplantation, limitations in the treatment effect remain unresolved. In this paper, we provide a detailed summary of the potential mechanisms of neural stem cell therapy for the treatment of ischemic stroke, review current neural stem cell therapeutic strategies and clinical trial results, and summarize the latest advancements in neural stem cell engineering to improve the survival rate of neural stem cells. We hope that this review could help provide insight into the therapeutic potential of neural stem cells and guide future scientific endeavors on neural stem cells.
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Affiliation(s)
- Siji Wang
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Qianyan He
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Yang Qu
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Wenjing Yin
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Ruoyu Zhao
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Xuyutian Wang
- Department of Breast Surgery, General Surgery Center, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Yi Yang
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
- Neuroscience Research Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Zhen-Ni Guo
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
- Neuroscience Research Center, Department of Neurology, the First Hospital of Jilin University, Changchun, Jilin Province, China
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Boucherie C, Alkailani M, Jossin Y, Ruiz-Reig N, Mahdi A, Aldaalis A, Aittaleb M, Tissir F. Auts2 enhances neurogenesis and promotes expansion of the cerebral cortex. J Adv Res 2024:S2090-1232(24)00296-0. [PMID: 39013538 DOI: 10.1016/j.jare.2024.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/28/2023] [Accepted: 07/13/2024] [Indexed: 07/18/2024] Open
Abstract
INTRODUCTION The AUTS2 gene is associated with various neurodevelopmental and psychiatric disorders and has been suggested to play a role in acquiring human-specific traits. Functional analyses of Auts2 knockout mice have focused on postmitotic neurons, and the reported phenotypes do not faithfully recapitulate the whole spectrum of AUTS2-related human diseases. OBJECTIVE The objective of the study is to assess the role of AUTS2 in the biology of neural progenitor cells, cortical neurogenesis and expansion; and understand how its deregulation leads to neurological disorders. METHODS We screened the literature and conducted a time point analysis of AUTS2 expression during cortical development. We used in utero electroporation to acutely modulate the expression level of AUTS2 in the developing cerebral cortex in vivo, and thoroughly characterized cortical neurogenesis and morphogenesis using immunofluorescence, cell tracing and sorting, transcriptomic profiling, and gene ontology enrichment analyses. RESULTS In addition to its expression in postmitotic neurons, we showed that AUTS2 is also expressed in neural progenitor cells at the peak of neurogenesis. Upregulation of AUTS2 dramatically altered the differentiation program and fate determination of cortical progenitors. Notably, it increased the number of basal progenitors and neurons and changed the expression of hundreds of genes, among which 444 have not been implicated in mouse brain development or function. CONCLUSION The study provides evidence that AUTS2 is expressed in germinal zones and plays a key role in fate decision of neural progenitor cells with impact on corticogenesis. It also presents comprehensive lists of AUTS2 target genes thus advancing the molecular mechanisms underlying AUTS2-associated diseases and the evolutionary expansion of the cerebral cortex.
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Affiliation(s)
- Cédric Boucherie
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium
| | - Maisa Alkailani
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Yves Jossin
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium
| | - Nuria Ruiz-Reig
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium
| | - Asma Mahdi
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Arwa Aldaalis
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Mohamed Aittaleb
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Fadel Tissir
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium; Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar.
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Maes M, Zhou B, Vasupanrajit A, Jirakran K, Klomkliew P, Chanchaem P, Tunvirachaisakul C, Plaimas K, Suratanee A, Li J, Almulla AF, Payungporn S. A further examination of growth factors, T helper 1 polarization, and the gut microbiome in major depression: Associations with reoccurrence of illness, cognitive functions, suicidal behaviors, and quality of life. J Psychiatr Res 2024; 176:430-441. [PMID: 38968876 DOI: 10.1016/j.jpsychires.2024.06.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 06/24/2024] [Indexed: 07/07/2024]
Abstract
Growth factors, T helper (Th)1 polarization, and the microbiome are involved in the pathophysiology of major depression (MDD). It remains unclear whether the combination of these three pathways could enhance the accuracy of predicting the features of MDD, including recurrence of illness (ROI), suicidal behaviors and the phenome. We measured serum stem cell factor (SCF), stem cell growth factor (SCGF), stromal cell-derived factor-1 (SDF-1), platelet-derived growth factor (PDGF), hepatocyte growth factor (HGF), macrophage-colony stimulating factor (M-CSF) and vascular endothelial growth factor (VEGF), the ratio of serum Th1/Th2 cytokines (zTh1-zTh2), and the abundances of gut microbiome taxa by analyzing stool samples using 16S rDNA sequencing from 32 MDD patients and 37 healthy controls. The results show that serum SCF is significantly lower and VEGF increased in MDD. Adverse childhood experiences (ACE) and ROI are significantly associated with lowered SCF and increasing VEGF. Lifetime and current suicidal behaviors are strongly predicted (63.5%) by an increased VEGF/SCF ratio, Th1 polarization, a gut microbiome enterotype indicating gut dysbiosis, and lowered abundance of Dorea and Faecalobacterium. Around 80.5% of the variance in the phenome's severity is explained by ROI, ACEs, and lowered Parabacteroides distasonis and Clostridium IV abundances. A large part of the variance in health-related quality of life (54.1%) is explained by the VEGF/SCF ratio, Th1 polarization, ACE, and male sex. In conclusion, key features of MDD are largely predicted by the cumulative effects of ACE, Th1 polarization, aberrations in growth factors and the gut microbiome with increased pathobionts but lowered beneficial symbionts.
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Affiliation(s)
- Michael Maes
- Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China; Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, 610072, China; Department of Psychiatry, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand; Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, South Korea; Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria; Research Institute, Medical University of Plovdiv, Plovdiv, Bulgaria; Cognitive Impairment and Dementia Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Bo Zhou
- Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China; Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, 610072, China.
| | - Asara Vasupanrajit
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand.
| | - Ketsupar Jirakran
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand; Maximizing Thai Children's Developmental Potential Research Unit, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Pavit Klomkliew
- Center of Excellence in Systems Microbiology, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Prangwalai Chanchaem
- Center of Excellence in Systems Microbiology, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Chavit Tunvirachaisakul
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand; Cognitive Impairment and Dementia Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Kitiporn Plaimas
- Advanced Virtual and Intelligent Computing (AVIC) Center, Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Apichat Suratanee
- Department of Mathematics, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok, 10800, Thailand.
| | - Jing Li
- Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China; Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, 610072, China.
| | - Abbas F Almulla
- Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China; Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, 610072, China; Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq.
| | - Sunchai Payungporn
- Center of Excellence in Systems Microbiology, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
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Falero-Diaz G, Barboza CDA, Vazquez-Padron RI, Velazquez OC, Lassance-Soares RM. Loss of c-Kit in Endothelial Cells Protects against Hindlimb Ischemia. Biomedicines 2024; 12:1358. [PMID: 38927565 PMCID: PMC11201387 DOI: 10.3390/biomedicines12061358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/04/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Critical limb ischemia (CLI) is the end stage of peripheral artery disease (PAD), and around 30% of CLI patients are ineligible for current treatments. The angiogenic benefits of c-Kit have been reported in the ischemia scenario; however, the present study demonstrates the effects of specific endothelial c-Kit signaling in arteriogenesis during hindlimb ischemia. METHODS We created conditional knockout mouse models that decrease c-Kit (c-Kit VE-Cadherin CreERT2-c-Kit) or its ligand (SCF VE-Cadherin CreERT2-SCF) specifically in endothelial cells (ECs) after tamoxifen treatment. These mice and a control group (wild-type VE-Cadherin CreERT2-WT) were subjected to hindlimb ischemia or aortic crush to evaluate perfusion/arteriogenesis and endothelial barrier permeability, respectively. RESULTS Our data confirmed the lower gene expression of c-Kit and SCF in the ECs of c-Kit and SCF mice, respectively. In addition, we confirmed the lower percentage of ECs positive for c-Kit in c-Kit mice. Further, we found that c-Kit and SCF mice had better limb perfusion and arteriogenesis compared to WT mice. We also demonstrated that c-Kit and SCF mice had a preserved endothelial barrier after aortic crush compared to WT. CONCLUSIONS Our data demonstrate the deleterious effects of endothelial SCF/c-Kit signaling on arteriogenesis and endothelial barrier integrity.
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Affiliation(s)
- Gustavo Falero-Diaz
- Department of Surgery, Miller School of Medicine, University of Miami, 1600 NW 10th Ave, RMSB, Miami, FL 33136, USA; (G.F.-D.); (R.I.V.-P.); (O.C.V.)
| | - Catarina de A. Barboza
- Department of Medicine, Miller School of Medicine, University of Miami, 1580 NW 10th Ave, Batchelor Building, Miami, FL 33136, USA;
| | - Roberto I. Vazquez-Padron
- Department of Surgery, Miller School of Medicine, University of Miami, 1600 NW 10th Ave, RMSB, Miami, FL 33136, USA; (G.F.-D.); (R.I.V.-P.); (O.C.V.)
| | - Omaida C. Velazquez
- Department of Surgery, Miller School of Medicine, University of Miami, 1600 NW 10th Ave, RMSB, Miami, FL 33136, USA; (G.F.-D.); (R.I.V.-P.); (O.C.V.)
| | - Roberta M. Lassance-Soares
- Department of Surgery, Miller School of Medicine, University of Miami, 1600 NW 10th Ave, RMSB, Miami, FL 33136, USA; (G.F.-D.); (R.I.V.-P.); (O.C.V.)
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Qiu X, Guo Y, Liu M, Zhang B, Li J, Wei J, Li M. Single-cell RNA-sequencing analysis reveals enhanced non-canonical neurotrophic factor signaling in the subacute phase of traumatic brain injury. CNS Neurosci Ther 2023; 29:3446-3459. [PMID: 37269057 PMCID: PMC10580338 DOI: 10.1111/cns.14278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/25/2023] [Accepted: 05/14/2023] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND Traumatic brain injury (TBI) is a leading cause of long-term disability in young adults and induces complex neuropathological processes. Cellular autonomous and intercellular changes during the subacute phase contribute substantially to the neuropathology of TBI. However, the underlying mechanisms remain elusive. In this study, we explored the dysregulated cellular signaling during the subacute phase of TBI. METHODS Single-cell RNA-sequencing data (GSE160763) of TBI were analyzed to explore the cell-cell communication in the subacute phase of TBI. Upregulated neurotrophic factor signaling was validated in a mouse model of TBI. Primary cell cultures and cell lines were used as in vitro models to examine the potential mechanisms affecting signaling. RESULTS Single-cell RNA-sequencing analysis revealed that microglia and astrocytes were the most affected cells during the subacute phase of TBI. Cell-cell communication analysis demonstrated that signaling mediated by the non-canonical neurotrophic factors midkine (MDK), pleiotrophin (PTN), and prosaposin (PSAP) in the microglia/astrocytes was upregulated in the subacute phase of TBI. Time-course profiling showed that MDK, PTN, and PSAP expression was primarily upregulated in the subacute phase of TBI, and astrocytes were the major source of MDK and PTN after TBI. In vitro studies revealed that the expression of MDK, PTN, and PSAP in astrocytes was enhanced by activated microglia. Moreover, MDK and PTN promoted the proliferation of neural progenitors derived from human-induced pluripotent stem cells (iPSCs) and neurite growth in iPSC-derived neurons, whereas PSAP exclusively stimulated neurite growth. CONCLUSION The non-canonical neurotrophic factors MDK, PTN, and PSAP were upregulated in the subacute phase of TBI and played a crucial role in neuroregeneration.
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Affiliation(s)
- Xuecheng Qiu
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular BiologyXuzhou Medical UniversityXuzhouJiangsuChina
| | - Yaling Guo
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular BiologyXuzhou Medical UniversityXuzhouJiangsuChina
| | - Ming‐Feng Liu
- Department of NeurosurgeryXuzhou Hospital of Traditional Chinese MedicineXuzhouJiangsuChina
| | - Bingge Zhang
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular BiologyXuzhou Medical UniversityXuzhouJiangsuChina
| | - Jingzhen Li
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular BiologyXuzhou Medical UniversityXuzhouJiangsuChina
| | - Jian‐Feng Wei
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular BiologyXuzhou Medical UniversityXuzhouJiangsuChina
- Department of Histology and EmbryologyXuzhou Medical UniversityXuzhouJiangsuChina
| | - Meng Li
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular BiologyXuzhou Medical UniversityXuzhouJiangsuChina
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Guo Q, Wang Y, Wang Q, Qian Y, Jiang Y, Dong X, Chen H, Chen X, Liu X, Yu S, Zhu J, Shan S, Wu B, Zhou W, Wang H. In the developing cerebral cortex: axonogenesis, synapse formation, and synaptic plasticity are regulated by SATB2 target genes. Pediatr Res 2023; 93:1519-1527. [PMID: 36028553 DOI: 10.1038/s41390-022-02260-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/23/2022] [Accepted: 07/29/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Special AT-rich sequence-binding protein 2 is essential for the development of cerebral cortex and key molecular node for the establishment of proper neural circuitry and function. Mutations in the SATB2 gene lead to SATB2-associated syndrome, which is characterized by abnormal development of skeleton and central nervous systems. METHODS We generated Satb2 knockout mouse model through CRISPR-Cas9 technology and performed RNA-seq and ChIP-seq of embryonic cerebral cortex. We conducted RT-qPCR, western blot, immunofluorescence staining, luciferase reporter assay and behavioral analysis for experimental verification. RESULTS We identified 1363 downstream effector genes of Satb2 and correlation analysis of Satb2-targeted genes and neurological disease genes showed that Satb2 contribute to cognitive and mental disorders from the early developmental stage. We found that Satb2 directly regulate the expression of Ntng1, Cdh13, Kitl, genes important for axon guidance, synaptic formation, neuron migration, and Satb2 directly activates the expression of Mef2c. We also showed that Satb2 heterozygous knockout mice showed impaired spatial learning and memory. CONCLUSIONS Taken together, our study supportsroles of Satb2 in the regulation of axonogenesis and synaptic formation at the early developmental stage and provides new insights into the complicated regulatory mechanism of Satb2 and new evidence to elucidate the pathogen of SATB2-associated syndrome. IMPACT 1363 downstream effector genes of Satb2 were classified into 5 clusters with different temporal expression patterns. We identified Plxnd1, Ntng1, Efnb2, Ephb1, Plxna2, Epha3, Plxna4, Unc5c, and Flrt2 as axon guidance molecules to regulate axonogenesis. 168 targeted genes of Satb2 were found to regulate synaptic formation in the early development of the cerebral cortex. Transcription factor Mef2c is positively regulated by Satb2, and 28 Mef2c-targeted genes can be directly regulated by Satb2. In the Morris water maze test, Satb2+/- mice showed impaired spatial learning and memory, further strengthening that Satb2 can regulate synaptic functions.
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Affiliation(s)
- Qiufang Guo
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
- Berry Genomics Co, 102206, Beijing, China
| | - Yaqiong Wang
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Qing Wang
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Yanyan Qian
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Yinmo Jiang
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Xinran Dong
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Huiyao Chen
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Xiang Chen
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Xiuyun Liu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Sha Yu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Jitao Zhu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Shifang Shan
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, 200032, Shanghai, China
| | - Bingbing Wu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China
| | - Wenhao Zhou
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China.
- Division of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Key Laboratory of Neonatal Diseases, Ministry of Health, 201102, Shanghai, China.
| | - Huijun Wang
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, 201102, Shanghai, China.
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Burtscher J, Niedermeier M, Hüfner K, van den Burg E, Kopp M, Stoop R, Burtscher M, Gatterer H, Millet GP. The interplay of hypoxic and mental stress: Implications for anxiety and depressive disorders. Neurosci Biobehav Rev 2022; 138:104718. [PMID: 35661753 DOI: 10.1016/j.neubiorev.2022.104718] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 12/14/2022]
Abstract
Adequate oxygen supply is essential for the human brain to meet its high energy demands. Therefore, elaborate molecular and systemic mechanism are in place to enable adaptation to low oxygen availability. Anxiety and depressive disorders are characterized by alterations in brain oxygen metabolism and of its components, such as mitochondria or hypoxia inducible factor (HIF)-pathways. Conversely, sensitivity and tolerance to hypoxia may depend on parameters of mental stress and the severity of anxiety and depressive disorders. Here we discuss relevant mechanisms of adaptations to hypoxia, as well as their involvement in mental stress and the etiopathogenesis of anxiety and depressive disorders. We suggest that mechanisms of adaptations to hypoxia (including metabolic responses, inflammation, and the activation of chemosensitive brain regions) modulate and are modulated by stress-related pathways and associated psychiatric diseases. While severe chronic hypoxia or dysfunctional hypoxia adaptations can contribute to the pathogenesis of anxiety and depressive disorders, harnessing controlled responses to hypoxia to increase cellular and psychological resilience emerges as a novel treatment strategy for these diseases.
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Affiliation(s)
- Johannes Burtscher
- Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland; Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland.
| | - Martin Niedermeier
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Katharina Hüfner
- Department of Psychiatry, Psychotherapy, Psychosomatics and Medical Psychology, University Clinic for Psychiatry II, Innsbruck Medical University, Innsbruck, Austria
| | - Erwin van den Burg
- Department of Psychiatry, Center of Psychiatric Neuroscience (CNP), University Hospital of Lausanne (CHUV), Prilly, Lausanne, Switzerland
| | - Martin Kopp
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Ron Stoop
- Department of Psychiatry, Center of Psychiatric Neuroscience (CNP), University Hospital of Lausanne (CHUV), Prilly, Lausanne, Switzerland
| | - Martin Burtscher
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Hannes Gatterer
- Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy
| | - Grégoire P Millet
- Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland; Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
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Mashayekhi F, Shabani S, Sasani ST, Salehi Z. The association of stem cell factor and soluble c-Kit (s-cKit) receptor serum concentrations with the severity and risk prediction of autism spectrum disorders. Metab Brain Dis 2022; 37:619-624. [PMID: 35023029 DOI: 10.1007/s11011-021-00883-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 12/05/2021] [Indexed: 10/19/2022]
Abstract
S tem cell factor (SCF) and its receptor (c-kit) signaling play important role in normal brain physiology including neurogenesis, synapse formation and spatial learning function of the hippocampal region of the brain. Autism spectrum disorder (ASD) is believed to result from abnormal development of neuronal networks and synaptic function. The aim of this study was to evaluate the SCF and its soluble receptor (s-ckit) serum concentrations in ASD. We also studied the serum SCF and s-ckit concentration with the severity of ASD (Levels 1-3; Mild, Moderate and severe, respectively). Ninety five patients with ASD (Mild; n=33, Moderate; n=32 and severe; n=30) and 82 normal controls age matched were included in this study. The serum concentration of SCF and s-ckit were measured by enzyme-linked immunosorbent assay (ELISA). The SCF serum concentration in control subjects was 3.45±1.06 ng/ml and in ASD was 3.41±0.92 ng/ml (P=0.88). The serum levels of s-ckit in control and ASD groups were 56.82±13.22 ng/ml and 67.11±12.00, respectively (P=001). We have also studied serum SCF and s-ckit concentrations with the severity of ASD. The serum concentration of SCF in mild, moderate and severe ASD groups was 3.45±0.93, 3.4±0.87 and 3.43±0.98 ng/ml, respectively (P>0.05) and for s-ckit was 48.77±9.28, 61.66±12.18 and 93.11±14.81ng/ml, respectively (P<0.05). The result of this study suggests that serum s-cKit concentrations may provide a reliable and practical indicator of ASD and positively correlated with disease severity. It is also concluded that s-cKit might be involved in the pathophysiology of ASD.
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Affiliation(s)
- Farhad Mashayekhi
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran.
| | - Somayeh Shabani
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
| | | | - Zivar Salehi
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
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Leptin enhances adult neurogenesis and reduces pathological features in a transgenic mouse model of Alzheimer's disease. Neurobiol Dis 2020; 148:105219. [PMID: 33301880 DOI: 10.1016/j.nbd.2020.105219] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 11/18/2020] [Accepted: 12/03/2020] [Indexed: 01/19/2023] Open
Abstract
Alzheimer's disease (AD) is the most common dementia worldwide and is characterized by the presence of senile plaques by amyloid-beta (Aβ) and neurofibrillary tangles of hyperphosphorylated Tau protein. These changes lead to progressive neuronal degeneration and dysfunction, resulting in severe brain atrophy and cognitive deficits. With the discovery that neurogenesis persists in the adult mammalian brain, including brain regions affected by AD, studies of the use of neural stem cells (NSCs) for the treatment of neurodegenerative diseases to repair or prevent neuronal cell loss have increased. Here we demonstrate that leptin administration increases the neurogenic process in the dentate gyrus of the hippocampus as well as in the subventricular zone of lateral ventricles of adult and aged mice. Chronic treatment with leptin increased NSCs proliferation with significant effects on proliferation and differentiation of newborn cells. The expression of the long form of the leptin receptor, LepRb, was detected in the neurogenic niches by reverse qPCR and immunohistochemistry. Moreover, leptin modulated astrogliosis, microglial cell number and the formation of senile plaques. Additionally, leptin led to attenuation of Aβ-induced neurodegeneration and superoxide anion production as revealed by Fluoro-Jade B and dihydroethidium staining. Our study contributes to the understanding of the effects of leptin in the brain that may lead to the development of new therapies to treat Alzheimer's disease.
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Bagheri-Mohammadi S. Microglia in Alzheimer's Disease: The Role of Stem Cell-Microglia Interaction in Brain Homeostasis. Neurochem Res 2020; 46:141-148. [PMID: 33174075 DOI: 10.1007/s11064-020-03162-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/28/2020] [Accepted: 10/27/2020] [Indexed: 12/15/2022]
Abstract
Microglia as resident cells of the brain can regulate neural development and maintenance of neuronal networks. Any types of pathologic events or changes in brain homeostasis are involved in the activation of microglia. This activation depends on the context, type of the stressor, or pathology. Due to the release of a plethora of substances such as chemokines, cytokines, and growth factors, microglia able to influence the pathologic outcome. In Alzheimer's disease (AD) condition, the deposition of amyloid-β (Aβ) result in provokes the phenotypic activation of microglia and their elaboration of pro-inflammatory molecules. New investigations reveal that cellular therapy with stem cells might have therapeutic effects in preventing the pathogenesis of AD. Although many strategies have focused on the use of stem cells to regenerate damaged neurons, new researches have demonstrated the immune-regulatory feature of stem cells which can modulate the activity state of microglia as well as mediates neuroinflammation. Hence, understanding the molecular mechanisms involved in the brain homeostasis by the protective features of mesenchymal stem cells (MSCs) could lead to remedial treatment for AD.
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Affiliation(s)
- Saeid Bagheri-Mohammadi
- Department of Physiology and Neurophysiology Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. .,Department of Physiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran. .,Departments of Applied Cell Sciences, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
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Xin J, Zeng D, Wang H, Sun N, Khalique A, Zhao Y, Wu L, Pan K, Jing B, Ni X. Lactobacillus johnsonii BS15 improves intestinal environment against fluoride-induced memory impairment in mice-a study based on the gut-brain axis hypothesis. PeerJ 2020; 8:e10125. [PMID: 33083147 PMCID: PMC7547597 DOI: 10.7717/peerj.10125] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 09/17/2020] [Indexed: 01/09/2023] Open
Abstract
Background Excessive fluoride can lead to chronic neurodegeneration characterized by neuron and myelin loss and memory dysfunction. The gut–brain axis hypothesis suggests that gut microbiota plays a crucial role in regulating brain function. Thus, using probiotics to adjust the gut microenvironment may be a potential therapy for mental diseases. Methods Mice in the prob group were administrated with Lactobacillus johnsonii BS15 for 28 days prior to and throughout a 70-day exposure to sodium fluoride. The drinking water of all groups (F and prob groups) except the control group were replaced by high-fluoride water (100 mg NaF/L) on day 28. Animals in each group were divided into two subsets: one underwent behavioral test, and the other was sacrificed for sampling. The mRNA expression level and protein content related to inflammatory reaction in the ileum and hippocampus were respectively detected by reverse transcription quantitative polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA). The mRNA expression levels of proteins related to myelin structure, apoptosis, and memory in the hippocampus and tight junction proteins in the ileum were determined by RT-qPCR and/or immunohistochemistry. Gut permeability markers (D-lactate and diamine oxidase (DAO)) in the serum were also examined by ELISA. Results The results showed that fluoride exposure induced a lower spontaneous exploration (P < 0.05) in T-maze test, which indicated an impairment of memory. Spontaneous exploration of BS15-treated mice was significantly higher (P < 0.05) than that in F group. Fluoride reduced (P < 0.05) levels of myelin structural protein (proteolipid protein) and neurogenesis-associated proteins (brain-derived neurotrophic factor and cAMP/Ca2+ responsive element-binding protein), induced disordered inflammatory cytokines (TNF-α, IFN-γ, and IL-6; P < 0.05), increased pro-apoptotic genes (caspase-3; P < 0.05), and decreased anti-apoptotic genes (Bcl-2; P < 0.05) in the hippocampus, of which the influences were reversed by BS15. BS15 treatment exerted significant preventive effects on reversing the gut inflammation induced by excessive fluoride intake by reducing (P < 0.05) the levels of pro-inflammatory cytokines (tumor necrosis factor-alpha (TNF-α) and interferon-gamma (IFN-γ)) and remarkably increasing (P < 0.05) the level of anti-inflammatory cytokines (IL-10). Moreover, the serum DAO activity and D-lactate concentration significantly increased by fluoride were also reduced (P < 0.05) by BS15. This result indicated the profitable effect of BS15 on gut permeability. Conclusion L. johnsonii BS15 intake could benefit the neuroinflammation and demyelination in the hippocampus by improving the gut environment and ameliorating fluorine-induced memory dysfunction.
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Affiliation(s)
- Jinge Xin
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Dong Zeng
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hesong Wang
- Department of Gastroenterology, Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ning Sun
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Abdul Khalique
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ying Zhao
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Liqian Wu
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Kangcheng Pan
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Bo Jing
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xueqin Ni
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
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12
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Ghanimati R, Rajabi H, Ramezani F, Ramez M, Bapiran M, Nasirinezhad F. The effect of preconditioning with high-intensity training on tissue levels of G-CSF, its receptor and C-kit after an acute myocardial infarction in male rats. BMC Cardiovasc Disord 2020; 20:75. [PMID: 32046645 PMCID: PMC7011373 DOI: 10.1186/s12872-020-01380-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 02/06/2020] [Indexed: 02/13/2023] Open
Abstract
Background Exercise training is known as a practical way to increase cardioprotection against stress, and it seems that stem cell recruitment is one of its mechanisms. The purpose of the present study was to investigate the effect of preconditioning with High-intensity interval training (HIIT) on tissue levels of G-CSF, its receptor and C-Kit following acute myocardial infarction in male rats. Methods Twenty Male Wistar rats were randomly divided into 4 groups of control, MI, HIIT, and HIIT+MI. Training groups performed 2 weeks of high intensity interval training in 4 sections. The first section consisted training in 3 days and 2 sessions in each day (4 × 2 min with 35–40 m/min and 3 × 2 min with 25–30 m/min between high intervals. The second part included 2 days of training (4 × 2 min with 40 to 45 m/min and 3 × 2 min with 28 to 32 m /min). The third part was performed in 3 days with one more repetition. The fourth section consisted 2 days of training and with one more repetition compared to section 3. For induction of myocardial infarction, subcutaneous injection of isoprenaline was used. CK, total CK, LDH, and troponin T were measured in serum and G-CSF, G-CSFR and C-Kit proteins were measured by the Western Blot method in the heart tissue. Results The results of this study showed that enzymes of CK, total CK, LDH, troponin T had a significant increase in both MI and HIIT+MI groups compared to the other two groups (P < 0.001) and these indices in the MI group were significantly higher than the HIIT+MI group. Also, the results demonstrated that G-CSF, G-CSFR and C-Kit protein expression in the heart tissue significantly increased after MI. As well as, 2 weeks of HIIT training significantly increased G-CSF and C-kit in the training group compared to the control group, but the training caused that these proteins does not increase in HIIT+MI group as much as MI group. Conclusions Along with other protective pathways, high intensity interval training can increase cardioprotection and decrease heart injuries through the increase in G-CSF, G-CSFR and C-kit level.
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Affiliation(s)
- Reza Ghanimati
- Department of Exercise physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran
| | - Hamid Rajabi
- Department of Exercise physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran
| | - Fatemeh Ramezani
- Physiology Research Center and Physiology Department, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maral Ramez
- Department of Exercise physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran
| | - Mohsen Bapiran
- Department of Exercise physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran
| | - Farinaz Nasirinezhad
- Physiology Research Center and Physiology Department, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Nakajima K, Ito Y, Kikuchi S, Okano H, Takashima K, Woo GH, Yoshida T, Yoshinari T, Sugita-Konishi Y, Shibutani M. Developmental exposure to diacetoxyscirpenol reversibly disrupts hippocampal neurogenesis by inducing oxidative cellular injury and suppressed differentiation of granule cell lineages in mice. Food Chem Toxicol 2019; 136:111046. [PMID: 31836554 DOI: 10.1016/j.fct.2019.111046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 11/12/2019] [Accepted: 12/05/2019] [Indexed: 10/25/2022]
Abstract
To investigate the developmental exposure effect of diacetoxyscirpenol (DAS) on postnatal hippocampal neurogenesis, pregnant ICR mice were provided a diet containing DAS at 0, 0.6, 2.0, or 6.0 ppm from gestational day 6 to day 21 on weaning after delivery. Offspring were maintained through postnatal day (PND) 77 without DAS exposure. On PND 21, neural stem cells (NSCs) and all subpopulations of proliferating progenitor cells were suggested to decrease in number in the subgranular zone (SGZ) at ≥ 2.0 ppm. At 6.0 ppm, increases of SGZ cells showing TUNEL+, metallothionein-I/II+, γ-H2AX+ or malondialdehyde+, and transcript downregulation of Ogg1, Parp1 and Kit without changing the level of double-stranded DNA break-related genes were observed in the dentate gyrus. This suggested induction of oxidative DNA damage of NSCs and early-stage progenitor cells, which led to their apoptosis. Cdkn2a, Rb1 and Trp53 downregulated transcripts, which suggested an increased vulnerability to DNA damage. Hilar PVALB+ GABAergic interneurons decreased and Grin2a and Chrna7 were downregulated, which suggested suppression of type-2-progenitor cell differentiation. On PND 77, hilar RELN+ interneurons increased at ≥ 2.0 ppm; at 6.0 ppm, RELN-related Itsn1 transcripts were upregulated and ARC+ granule cells decreased. Increased RELN signals may ameliorate the response to the decreases of NSCs and ARC-mediated synaptic plasticity. These results suggest that DAS reversibly disrupts hippocampal neurogenesis by inducing oxidative cellular injury and suppressed differentiation of granule cell lineages. The no-observed-adverse-effect level of DAS for offspring neurogenesis was determined to be 0.6 ppm (0.09-0.29 mg/kg body weight/day).
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Affiliation(s)
- Kota Nakajima
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu, 501-1193, Japan
| | - Yuko Ito
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu, 501-1193, Japan
| | - Satomi Kikuchi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Hiromu Okano
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Kazumi Takashima
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Gye-Hyeong Woo
- Laboratory of Histopathology, Department of Clinical Laboratory Science, Semyung University, 65 Semyung-ro, Jecheon-si, Chungbuk, 27136, Republic of Korea
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Tomoya Yoshinari
- Division of Microbiology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Yoshiko Sugita-Konishi
- Laboratory of Food Safety Science, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, 252-5201, Japan
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
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Watanabe Y, Nakajima K, Ito Y, Akahori Y, Saito F, Woo GH, Yoshida T, Shibutani M. Twenty-eight-day repeated oral doses of sodium valproic acid increases neural stem cells and suppresses differentiation of granule cell lineages in adult hippocampal neurogenesis of postpubertal rats. Toxicol Lett 2019; 312:195-203. [PMID: 31085223 DOI: 10.1016/j.toxlet.2019.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 04/17/2019] [Accepted: 05/10/2019] [Indexed: 02/06/2023]
Abstract
Developmental exposure to valproic acid (VPA), a model compound for experimental autism, has shown to primarily target GABAergic interneuron subpopulations in hippocampal neurogenesis of rat offspring. The VPA-exposed animals had revealed late effects on granule cell lineages, involving progenitor cell proliferation and synaptic plasticity. To investigate the possibility whether hippocampal neurogenesis in postpubertal rats in a protocol of 28-day repeated exposure is affected in relation with the property of a developmental neurotoxicant by developmental exposure, VPA was orally administered to 5-week-old male rats at 0, 200, 800 and 900 mg/kg body weight/day for 28 days. At 900 mg/kg, GFAP+ cells increased in number, but DCX+ cells decreased in number in the granule cell lineages. Moreover, CHRNB2+ cells and NeuN+ postmitotic neurons decreased in number in the hilus of the dentate gyrus. Transcript level examined at 900 mg/kg in the dentate gyrus was increased with Kit, but decreased with Dpsyl3, Btg2, Pvalb and Chrnb2. These results suggest that VPA increased type-1 stem cells in relation to the activation of SCF-KIT signaling and suppression of BTG2-mediated antiproliferative effect on stem cells. VPA also decreased type-3 progenitor cells and immature granule cells probably in relation with PVALB+ interneuron hypofunction and reduced CHRNB2+ interneuron subpopulation in the hilus, as well as with suppression of BTG2-mediated terminal differentiation of progenitor cells. Thus, the disruption pattern of VPA by postpubertal exposure was different from developmental exposure. However, disruption itself can be detected, suggesting availability of hippocampal neurogenesis in detecting developmental neurotoxicants in a 28-day toxicity study.
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Affiliation(s)
- Yousuke Watanabe
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Kota Nakajima
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Yuko Ito
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Yumi Akahori
- Chemicals Evaluation and Research Institute, Japan, 1-4-25 Koraku, Bunkyo-ku, Tokyo 112-0004, Japan.
| | - Fumiyo Saito
- Chemicals Evaluation and Research Institute, Japan, 1-4-25 Koraku, Bunkyo-ku, Tokyo 112-0004, Japan.
| | - Gye-Hyeong Woo
- Laboratory of Histopathology, Department of Clinical Laboratory Science, Semyung University, 65 Semyung-ro, Jecheon-si, Chungbuk 27136, Republic of Korea.
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
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Abstract
KIT is a receptor tyrosine kinase that after binding to its ligand stem cell factor activates signaling cascades linked to biological processes such as proliferation, differentiation, migration and cell survival. Based on studies performed on SCF and/or KIT mutant animals that presented anemia, sterility, and/or pigmentation disorders, KIT signaling was mainly considered to be involved in the regulation of hematopoiesis, gametogenesis, and melanogenesis. More recently, novel animal models and ameliorated cellular and molecular techniques have led to the discovery of a widen repertoire of tissue compartments and functions that are being modulated by KIT. This is the case for the lung, heart, nervous system, gastrointestinal tract, pancreas, kidney, liver, and bone. For this reason, the tyrosine kinase inhibitors that were originally developed for the treatment of hemato-oncological diseases are being currently investigated for the treatment of non-oncological disorders such as asthma, rheumatoid arthritis, and alzheimer's disease, among others. The beneficial effects of some of these tyrosine kinase inhibitors have been proven to depend on KIT inhibition. This review will focus on KIT expression and regulation in healthy and pathologic conditions other than cancer. Moreover, advances in the development of anti-KIT therapies, including tyrosine kinase inhibitors, and their application will be discussed.
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Li Y, Wu L, Yu M, Yang F, Wu B, Lu S, Tu M, Xu H. HIF-1α is Critical for the Activation of Notch Signaling in Neurogenesis During Acute Epilepsy. Neuroscience 2018; 394:206-219. [PMID: 30394322 DOI: 10.1016/j.neuroscience.2018.10.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 09/30/2018] [Accepted: 10/22/2018] [Indexed: 01/01/2023]
Abstract
Emerging evidence suggests that hypoxia-inducible factors (specifically, HIF-1α) and Notch signaling are involved in epileptogenesis and that cross-coupling exists between HIF-1α and Notch signaling in other diseases, including tumors and ischemia. However, the exact molecular mechanisms by which HIF-1α and Notch signaling affect the development of epilepsy, especially regarding neurogenesis, remain unclear. In the present study, we investigated the role of HIF-1α in neurogenesis and whether Notch signaling is involved in this process during epileptogenesis by assessing hippocampal apoptosis, neuronal injury, and the proliferation and differentiation of neural stem cells (NSCs) in four groups, including control, epilepsy, epilepsy+2-methoxyestradiol (2ME2) and epilepsy+GSI-IX (DAPT) groups. Our data demonstrated that HIF-1α mediated neurogenesis during acute epilepsy, which required the participation of Notch signaling. The immunoprecipitation data illustrated that HIF-1α activated Notch signaling by physically interacting with the Notch intracellular domain (NICD) in epilepsy. In conclusion, our results suggested that HIF-1α-Notch signaling enhanced neurogenesis in acute epilepsy and that neurogenesis during epileptogenesis was reduced once this pathway was blocked; thus, members of this pathway might be potential therapeutic targets for epilepsy.
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Affiliation(s)
- Yushuang Li
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Lei Wu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Minhua Yu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Fei Yang
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Bo Wu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Shuting Lu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Mengqi Tu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Haibo Xu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China.
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Terashima T, Nakae Y, Katagi M, Okano J, Suzuki Y, Kojima H. Stem cell factor induces polarization of microglia to the neuroprotective phenotype in vitro. Heliyon 2018; 4:e00837. [PMID: 30294687 PMCID: PMC6171080 DOI: 10.1016/j.heliyon.2018.e00837] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/16/2018] [Accepted: 09/27/2018] [Indexed: 02/05/2023] Open
Abstract
Microglia are classified mainly into the M1 or M2 phenotypes, which evoke either proinflammatory or neuroprotective responses. Given the association of microglia with the pathogenesis of neuronal diseases, they are in focus as therapeutic targets for the treatment of such conditions. Stem cell factor (SCF) is a ligand for the c-kit receptor, one of the differentiation factors for bone marrow cells. In this study, characteristics of SCF-activated microglia and their effects on neurons were analyzed to investigate the therapeutic potential of SCF in neuronal diseases. SCF was found to induce proliferation, migration, and phagocytosis of microglia. In addition, SCF-derived microglia showed a neuroprotective phenotype expressing anti-inflammatory cytokines, growth factors, and M2 markers as compared to the phenotype shown by granulocyte macrophage-colony stimulating factor-derived microglia expressing inflammatory cytokines and M1 markers. Furthermore, supernatant medium from SCF-activated microglia enhanced cell proliferation and protection from cell death in NSC-34 neuronal cells. We conclude that SCF modulates microglial functions and induces activation of the neuroprotective effects of microglia, which could be used for treatment of neuronal diseases.
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Affiliation(s)
- Tomoya Terashima
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga, Japan
| | - Yuki Nakae
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga, Japan
| | - Miwako Katagi
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga, Japan
| | - Junko Okano
- Division of Anatomy and Cell Biology, Shiga University of Medical Science, Shiga, Japan.,Department of Plastic Surgery, Shiga University of Medical Science, Shiga, Japan
| | - Yoshihisa Suzuki
- Department of Plastic Surgery, Shiga University of Medical Science, Shiga, Japan
| | - Hideto Kojima
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga, Japan
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Laurent-Gengoux P, Petit V, Aktary Z, Gallagher S, Tweedy L, Machesky L, Larue L. Simulation of melanoblast displacements reveals new features of developmental migration. Development 2018; 145:dev160200. [PMID: 29769218 PMCID: PMC6031402 DOI: 10.1242/dev.160200] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 05/09/2018] [Indexed: 01/17/2023]
Abstract
To distribute and establish the melanocyte lineage throughout the skin and other developing organs, melanoblasts undergo several rounds of proliferation, accompanied by migration through complex environments and differentiation. Melanoblast migration requires interaction with extracellular matrix of the epidermal basement membrane and with surrounding keratinocytes in the developing skin. Migration has been characterized by measuring speed, trajectory and directionality of movement, but there are many unanswered questions about what motivates and defines melanoblast migration. Here, we have established a general mathematical model to simulate the movement of melanoblasts in the epidermis based on biological data, assumptions and hypotheses. Comparisons between experimental data and computer simulations reinforce some biological assumptions, and suggest new ideas for how melanoblasts and keratinocytes might influence each other during development. For example, it appears that melanoblasts instruct each other to allow a homogeneous distribution in the tissue and that keratinocytes may attract melanoblasts until one is stably attached to them. Our model reveals new features of how melanoblasts move and, in particular, suggest that melanoblasts leave a repulsive trail behind them as they move through the skin.
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Affiliation(s)
- Pascal Laurent-Gengoux
- Laboratory Mathematics in Interaction with Computer Science (MICS), Centrale Supélec, Université Paris Saclay, Gif-sur-Yvette 91190, France
| | - Valérie Petit
- Institut Curie, PSL Research University, INSERM U1021, Normal and Pathological Development of Melanocytes, Orsay 91405, France
- Univ Paris-Sud, Univ Paris-Saclay, CNRS UMR 3347, Orsay 91405, France
- Equipe Labellisée Ligue Contre le Cancer, Orsay 91405, France
| | - Zackie Aktary
- Institut Curie, PSL Research University, INSERM U1021, Normal and Pathological Development of Melanocytes, Orsay 91405, France
- Univ Paris-Sud, Univ Paris-Saclay, CNRS UMR 3347, Orsay 91405, France
- Equipe Labellisée Ligue Contre le Cancer, Orsay 91405, France
| | - Stuart Gallagher
- Institut Curie, PSL Research University, INSERM U1021, Normal and Pathological Development of Melanocytes, Orsay 91405, France
- Univ Paris-Sud, Univ Paris-Saclay, CNRS UMR 3347, Orsay 91405, France
- Equipe Labellisée Ligue Contre le Cancer, Orsay 91405, France
| | - Luke Tweedy
- CRUK Beatson Institute, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK
| | - Laura Machesky
- CRUK Beatson Institute, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK
| | - Lionel Larue
- Institut Curie, PSL Research University, INSERM U1021, Normal and Pathological Development of Melanocytes, Orsay 91405, France
- Univ Paris-Sud, Univ Paris-Saclay, CNRS UMR 3347, Orsay 91405, France
- Equipe Labellisée Ligue Contre le Cancer, Orsay 91405, France
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19
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Niu R, Chen H, Manthari RK, Sun Z, Wang J, Zhang J, Wang J. Effects of fluoride on synapse morphology and myelin damage in mouse hippocampus. CHEMOSPHERE 2018; 194:628-633. [PMID: 29241138 DOI: 10.1016/j.chemosphere.2017.12.027] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 12/03/2017] [Accepted: 12/05/2017] [Indexed: 05/26/2023]
Abstract
To investigate the fluoride-induced neurotoxicity on mice hippocampus, healthy adult mice were exposed to 25, 50, and 100 mg NaF/L for 60 days. The results showed that medium and high fluoride administration induced ultrastructural alterations in the structure of neuron synapse, including indistinct and short synaptic cleft, and thickened postsynaptic density (PSD). The significant reduced mRNA expressions of proteolipid protein (PLP) in medium and high fluoride groups suggested that myelin damage occurred in hippocampus. The myelin damage in turn was determined by the increased myelin-associated glycoprotein (MAG) level, which is naturally released by injured myelin, in high fluoride group, compared to the medium fluoride group. In addition, high fluoride exposure also reduced the mRNA and protein levels of cAMP response element-binding protein (CREB), brain-derived neurotrophic factor (BDNF), and neural cell adhesion molecule (NCAM). These findings suggested that the alteration in synaptic structure and myelin damage may partly be due to adverse effects of fluoride on the neurotrophy and neuron adhesion in mice hippocampus.
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Affiliation(s)
- Ruiyan Niu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Huijuan Chen
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Ram Kumar Manthari
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Zilong Sun
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jinming Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jianhai Zhang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jundong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China.
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20
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Zhao LR, Willing A. Enhancing endogenous capacity to repair a stroke-damaged brain: An evolving field for stroke research. Prog Neurobiol 2018; 163-164:5-26. [PMID: 29476785 PMCID: PMC6075953 DOI: 10.1016/j.pneurobio.2018.01.004] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 01/11/2018] [Accepted: 01/30/2018] [Indexed: 02/07/2023]
Abstract
Stroke represents a severe medical condition that causes stroke survivors to suffer from long-term and even lifelong disability. Over the past several decades, a vast majority of stroke research targets neuroprotection in the acute phase, while little work has been done to enhance stroke recovery at the later stage. Through reviewing current understanding of brain plasticity, stroke pathology, and emerging preclinical and clinical restorative approaches, this review aims to provide new insights to advance the research field for stroke recovery. Lifelong brain plasticity offers the long-lasting possibility to repair a stroke-damaged brain. Stroke impairs the structural and functional integrity of entire brain networks; the restorative approaches containing multi-components have great potential to maximize stroke recovery by rebuilding and normalizing the stroke-disrupted entire brain networks and brain functioning. The restorative window for stroke recovery is much longer than previously thought. The optimal time for brain repair appears to be at later stage of stroke rather than the earlier stage. It is expected that these new insights will advance our understanding of stroke recovery and assist in developing the next generation of restorative approaches for enhancing brain repair after stroke.
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Affiliation(s)
- Li-Ru Zhao
- Department of Neurosurgery, State University of New York, Upstate Medical University, Syracuse, NY, 13210, USA.
| | - Alison Willing
- Center for Excellence in Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida, Morsani College of Medicine, Tampa, FL, 33612, USA.
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21
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Parry SM, Peeples ES. The impact of hypoxic-ischemic brain injury on stem cell mobilization, migration, adhesion, and proliferation. Neural Regen Res 2018; 13:1125-1135. [PMID: 30028311 PMCID: PMC6065219 DOI: 10.4103/1673-5374.235012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Neonatal hypoxic-ischemic encephalopathy continues to be a significant cause of death or neurodevelopmental delays despite standard use of therapeutic hypothermia. The use of stem cell transplantation has recently emerged as a promising supplemental therapy to further improve the outcomes of infants with hypoxic-ischemic encephalopathy. After the injury, the brain releases several chemical mediators, many of which communicate directly with stem cells to encourage mobilization, migration, cell adhesion and differentiation. This manuscript reviews the biomarkers that are released from the injured brain and their interactions with stem cells, providing insight regarding how their upregulation could improve stem cell therapy by maximizing cell delivery to the injured tissue.
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Affiliation(s)
- Stephanie M Parry
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, NE, USA
| | - Eric S Peeples
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, NE, USA
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22
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Grade S, Götz M. Neuronal replacement therapy: previous achievements and challenges ahead. NPJ Regen Med 2017; 2:29. [PMID: 29302363 PMCID: PMC5677983 DOI: 10.1038/s41536-017-0033-0] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 09/22/2017] [Accepted: 09/25/2017] [Indexed: 12/26/2022] Open
Abstract
Lifelong neurogenesis and incorporation of newborn neurons into mature neuronal circuits operates in specialized niches of the mammalian brain and serves as role model for neuronal replacement strategies. However, to which extent can the remaining brain parenchyma, which never incorporates new neurons during the adulthood, be as plastic and readily accommodate neurons in networks that suffered neuronal loss due to injury or neurological disease? Which microenvironment is permissive for neuronal replacement and synaptic integration and which cells perform best? Can lost function be restored and how adequate is the participation in the pre-existing circuitry? Could aberrant connections cause malfunction especially in networks dominated by excitatory neurons, such as the cerebral cortex? These questions show how important connectivity and circuitry aspects are for regenerative medicine, which is the focus of this review. We will discuss the impressive advances in neuronal replacement strategies and success from exogenous as well as endogenous cell sources. Both have seen key novel technologies, like the groundbreaking discovery of induced pluripotent stem cells and direct neuronal reprogramming, offering alternatives to the transplantation of fetal neurons, and both herald great expectations. For these to become reality, neuronal circuitry analysis is key now. As our understanding of neuronal circuits increases, neuronal replacement therapy should fulfill those prerequisites in network structure and function, in brain-wide input and output. Now is the time to incorporate neural circuitry research into regenerative medicine if we ever want to truly repair brain injury.
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Affiliation(s)
- Sofia Grade
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians University Munich, 82152 Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Magdalena Götz
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians University Munich, 82152 Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
- SYNERGY, Excellence Cluster of Systems Neurology, Biomedical Center, Ludwig-Maximilians University Munich, 82152 Planegg-Martinsried, Germany
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23
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Zhang W, Gu GJ, Zhang Q, Liu JH, Zhang B, Guo Y, Wang MY, Gong QY, Xu JR. NSCs promote hippocampal neurogenesis, metabolic changes and synaptogenesis in APP/PS1 transgenic mice. Hippocampus 2017; 27:1250-1263. [PMID: 28833933 DOI: 10.1002/hipo.22794] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 08/02/2017] [Accepted: 08/11/2017] [Indexed: 02/05/2023]
Abstract
Adult neurogenesis and synaptic remodeling persist as a unique form of structural and functional plasticity in the hippocampal dentate gyrus (DG) and subventricular zone (SVZ) of the lateral ventricles due to the existence of neural stem cells (NSCs). Transplantation of NSCs may represent a promising approach for the recovery of neural circuits. Here, we aimed to examine effects of highly neuronal differentiation of NSCs transplantation on hippocampal neurogenesis, metabolic changes and synaptic formation in APP/PS1 mice. 12-month-old APP/PS1 mice were used for behavioral tests, immunohistochemistry, western blot, transmission electron microscopy and proton magnetic resonance spectroscopy (1H-MRS). The results showed that N-acetylaspartate (NAA) and Glutamate (Glu) levels were increased in the Tg-NSC mice compared with the Tg-PBS and Tg-AD mice 10 weeks after NSCs transplantation. NSC-induced an increase in expression of synaptophysin and postsynaptic protein-95, and the number of neurons with normal synapses was significantly increased in Tg-NSC mice. More doublecortin-, BrdU/NeuN- and Nestin-positive neurons were observed in the hippocampal DG and SVZ of the Tg-NSC mice. This is the first demonstration that engrafted NSCs with a high differentiation rate to neurons can enhance neurogenesis in a mouse model of AD and can be detected by 1H-MRS in vivo. It is suggested that engraft of NSCs can restore memory and promote endogenous neurogenesis and synaptic remodeling, moreover, 1H-MRS can detect metabolite changes in AD mice in vivo. The observed changes in NAA/creatine (Cr) and glutamate (Glu)/Cr may be correlated with newborn neurons and new synapse formation.
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Affiliation(s)
- Wei Zhang
- Department of Medical Imaging, Renji Hospital, Medical School of Jiaotong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, P. R. China
| | - Guo-Jun Gu
- Department of Medical Imaging, Tongji Hospital, Medical School of Tongji University, No. 389, Xincun Road, Putuo District, Shanghai, 200065, P. R. China
| | - Qi Zhang
- Department of Blood Transfusion, Huashan Hospital, Fudan University, No. 12, Urumqi Road, Jing'an District, Shanghai, 200040, P. R. China
| | - Jian-Hui Liu
- Department of Anesthesiology, Tongji Hospital, Medical School of Tongji University, No. 389, Xincun Road, Putuo District, Shanghai, 200065, P. R. China
| | - Bo Zhang
- Department of Medical Imaging, Tongji Hospital, Medical School of Tongji University, No. 389, Xincun Road, Putuo District, Shanghai, 200065, P. R. China
| | - Yi Guo
- Department of Medical Imaging, Tongji Hospital, Medical School of Tongji University, No. 389, Xincun Road, Putuo District, Shanghai, 200065, P. R. China
| | - Mei-Yun Wang
- Department of Radiology, Henan Provincial People's Hospital, No. 7, Weiwu Road, Jinshui District, Zhengzhou, 450003, P. R. China
| | - Qi-Yong Gong
- Huaxi MR Research Center, Department of Radiology, West China Hospital of Sichuan University, Chengdu, 610065, P. R. China
| | - Jian-Rong Xu
- Department of Medical Imaging, Renji Hospital, Medical School of Jiaotong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, P. R. China
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24
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Chen X, Wang S, Xu H, Pereira JD, Hatzistergos KE, Saur D, Seidler B, Hare JM, Perrella MA, Yin ZQ, Liu X. Evidence for a retinal progenitor cell in the postnatal and adult mouse. Stem Cell Res 2017; 23:20-32. [PMID: 28672156 DOI: 10.1016/j.scr.2017.06.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 06/16/2017] [Accepted: 06/19/2017] [Indexed: 12/22/2022] Open
Abstract
Progress in cell therapy for retinal disorders has been challenging. Recognized retinal progenitors are a heterogeneous population of cells that lack surface markers for the isolation of live cells for clinical implementation. In the present application, our objective was to use the stem cell factor receptor c-Kit (CD117), a surface marker, to isolate and evaluate a distinct progenitor cell population from retinas of postnatal and adult mice. Here we report that, by combining traditional methods with fate mapping, we have identified a c-Kit-positive (c-Kit+) retinal progenitor cell (RPC) that is self-renewing and clonogenic in vitro, and capable of generating many cell types in vitro and in vivo. Based on cell lineage tracing, significant subpopulations of photoreceptors in the outer nuclear layer and bipolar, horizontal, amacrine and Müller cells in the inner nuclear layer are the progeny of c-Kit+ cells in vivo. The RPC progeny contributes to retinal neurons and glial cells, which are responsible for the conversion of light into visual signals. The ability to isolate and expand in vitro live c-Kit+ RPCs makes them a future therapeutic option for retinal diseases.
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Affiliation(s)
- Xi Chen
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, China; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Shaojun Wang
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, China; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Haiwei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, China
| | - Joao D Pereira
- Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Anesthesia, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Dieter Saur
- Medicine II, Technische Universitaet Muenchen, Munich, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Barbara Seidler
- Medicine II, Technische Universitaet Muenchen, Munich, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joshua M Hare
- Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Mark A Perrella
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Zheng Qin Yin
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, China
| | - Xiaoli Liu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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25
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Hodges H, Pollock K, Stroemer P, Patel S, Stevanato L, Reuter I, Sinden J. Making Stem Cell Lines Suitable for Transplantation. Cell Transplant 2017. [DOI: 10.3727/000000007783464605] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Human stem cells, progenitor cells, and cell lines have been derived from embryonic, fetal, and adult sources in the search for graft tissue suitable for the treatment of CNS disorders. An increasing number of experimental studies have shown that grafts from several sources survive, differentiate into distinct cell types, and exert positive functional effects in experimental animal models, but little attention has been given to developing cells under conditions of good manufacturing practice (GMP) that can be scaled up for mass treatment. The capacity for continued division of stem cells in culture offers the opportunity to expand their production to meet the widespread clinical demands posed by neurodegenerative diseases. However, maintaining stem cell division in culture long term, while ensuring differentiation after transplantation, requires genetic and/or oncogenetic manipulations, which may affect the genetic stability and in vivo survival of cells. This review outlines the stages, selection criteria, problems, and ultimately the successes arising in the development of conditionally immortal clinical grade stem cell lines, which divide in vitro, differentiate in vivo, and exert positive functional effects. These processes are specifically exemplified by the murine MHP36 cell line, conditionally immortalized by a temperature-sensitive mutant of the SV40 large T antigen, and cell lines transfected with the c-myc protein fused with a mutated estrogen receptor (c-mycERTAM), regulated by a tamoxifen metabolite, but the issues raised are common to all routes for the development of effective clinical grade cells.
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Affiliation(s)
- Helen Hodges
- Department of Psychology, Institute of Psychiatry, Kings College, London, UK
- ReNeuron Ltd., Guildford, Surrey, UK
| | | | | | | | | | - Iris Reuter
- Department of Psychology, Institute of Psychiatry, Kings College, London, UK
- Department of Neurology, University of Giessen and Marburg, Germany
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26
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Chai Y, Huang Y, Tang H, Tu X, He J, Wang T, Zhang Q, Xiong F, Li D, Qiu Z. Role of stem cell growth factor/c-Kit in the pathogenesis of irritable bowel syndrome. Exp Ther Med 2017; 13:1187-1193. [PMID: 28413456 PMCID: PMC5377426 DOI: 10.3892/etm.2017.4133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 11/25/2016] [Indexed: 12/12/2022] Open
Abstract
Irritable bowel syndrome (IBS) is a functional bowel disease with a complicated etiopathogenesis, often characterized by gastrointestinal motility disorder and high visceral sensitivity. IBS is a comprehensive multi-systemic disorder, with the interaction of multiple factors, such as mental stress, intestinal function and flora, heredity, resulting in the disease. The existence of a common mechanism underlying the aforementioned factors is currently unknown. The lack of therapies that comprehensively address the disease symptoms, including abdominal pain and diarrhea, is a limitation of current IBS management. The current review has explored the role of the SCF/c-Kit receptor/ligand system in IBS. The SCF/c-Kit system constitutes a classical ligand/receptor tyrosine kinase signaling system that mediates inflammation and smooth muscle contraction. Additionally, it provides trophic support to neural crest-derived cell types, including the enteric nervous system and mast cells. The regulation of SCF/c-Kit on the interstitial cells of Cajal (ICC) suggest that it may play a key role in the aberrant intestinal dynamics and high visceral sensitivity observed in IBS. The role of the SCF/c-Kit system in intestinal motility, inflammation and nerve growth has been reported. From the available biomedical evidence on the pathogenesis of IBS, it has been concluded that the SCF-c-Kit system is a potential therapeutic target for rational drug design in the treatment of IBS.
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Affiliation(s)
- Yuna Chai
- Pharmaceutical Department, First Affiliated Hospital of Zhengzhou University of Chinese Medicine, Zhengzhou, Henan 450052, P.R. China.,Chinese Medicine Program, The First Clinical School of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Yusheng Huang
- Chinese Medicine Program, The First Clinical School of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Hongmei Tang
- Pharmaceutical Department, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Xing Tu
- Institute of Traditional Chinese Medicine, School of Traditional Chinese Medicine of Hubei University for Nationalities, Enshi, Hubei 445000, P.R. China
| | - Jianbo He
- Department of Orthopedics, The Second Clinical School of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Ting Wang
- Chinese Medicine Program, The First Clinical School of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Qingye Zhang
- Pharmaceutical Department, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Fen Xiong
- Pharmaceutical Department, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Detang Li
- Pharmaceutical Department, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Zhenwen Qiu
- Pharmaceutical Department, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
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27
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Kemp KC, Cerminara N, Hares K, Redondo J, Cook AJ, Haynes HR, Burton BR, Pook M, Apps R, Scolding NJ, Wilkins A. Cytokine therapy-mediated neuroprotection in a Friedreich's ataxia mouse model. Ann Neurol 2017; 81:212-226. [PMID: 28009062 PMCID: PMC5324580 DOI: 10.1002/ana.24846] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 12/06/2016] [Accepted: 12/11/2016] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Friedreich's ataxia is a devastating neurological disease currently lacking any proven treatment. We studied the neuroprotective effects of the cytokines, granulocyte-colony stimulating factor (G-CSF) and stem cell factor (SCF) in a humanized murine model of Friedreich's ataxia. METHODS Mice received monthly subcutaneous infusions of cytokines while also being assessed at monthly time points using an extensive range of behavioral motor performance tests. After 6 months of treatment, neurophysiological evaluation of both sensory and motor nerve conduction was performed. Subsequently, mice were sacrificed for messenger RNA, protein, and histological analysis of the dorsal root ganglia, spinal cord, and cerebellum. RESULTS Cytokine administration resulted in significant reversal of biochemical, neuropathological, neurophysiological, and behavioural deficits associated with Friedreich's ataxia. Both G-CSF and SCF had pronounced effects on frataxin levels (the primary molecular defect in the pathogenesis of the disease) and a regulators of frataxin expression. Sustained improvements in motor coordination and locomotor activity were observed, even after onset of neurological symptoms. Treatment also restored the duration of sensory nerve compound potentials. Improvements in peripheral nerve conduction positively correlated with cytokine-induced increases in frataxin expression, providing a link between increases in frataxin and neurophysiological function. Abrogation of disease-related pathology was also evident, with reductions in inflammation/gliosis and increased neural stem cell numbers in areas of tissue injury. INTERPRETATION These experiments show that cytokines already clinically used in other conditions offer the prospect of a novel, rapidly translatable, disease-modifying, and neuroprotective treatment for Friedreich's ataxia. Ann Neurol 2017;81:212-226.
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Affiliation(s)
- Kevin C. Kemp
- Multiple Sclerosis and Stem Cell Group, School of Clinical SciencesUniversity of BristolBristolUnited Kingdom
| | - Nadia Cerminara
- Sensory and Motor Systems Group, School of Physiology, Pharmacology and NeuroscienceUniversity of BristolBristolUnited Kingdom
| | - Kelly Hares
- Multiple Sclerosis and Stem Cell Group, School of Clinical SciencesUniversity of BristolBristolUnited Kingdom
| | - Juliana Redondo
- Multiple Sclerosis and Stem Cell Group, School of Clinical SciencesUniversity of BristolBristolUnited Kingdom
| | - Amelia J. Cook
- Multiple Sclerosis and Stem Cell Group, School of Clinical SciencesUniversity of BristolBristolUnited Kingdom
| | - Harry R. Haynes
- Brain Tumour Research Group, School of Clinical SciencesUniversity of BristolBristolUnited Kingdom
| | - Bronwen R. Burton
- Infection and Immunity, School of Cellular and Molecular MedicineUniversity of BristolBristolUnited Kingdom
| | - Mark Pook
- Synthetic Biology Theme, Institute of Environment, Health & Societies, Biosciences, Dept. of Life Sciences, College of Health & Life SciencesBrunel University LondonLondonUnited Kingdom
| | - Richard Apps
- Sensory and Motor Systems Group, School of Physiology, Pharmacology and NeuroscienceUniversity of BristolBristolUnited Kingdom
| | - Neil J. Scolding
- Multiple Sclerosis and Stem Cell Group, School of Clinical SciencesUniversity of BristolBristolUnited Kingdom
| | - Alastair Wilkins
- Multiple Sclerosis and Stem Cell Group, School of Clinical SciencesUniversity of BristolBristolUnited Kingdom
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28
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Chen X, Chen Z, Li Z, Zhao C, Zeng Y, Zou T, Fu C, Liu X, Xu H, Yin ZQ. Grafted c-kit +/SSEA1 - eye-wall progenitor cells delay retinal degeneration in mice by regulating neural plasticity and forming new graft-to-host synapses. Stem Cell Res Ther 2016; 7:191. [PMID: 28038685 PMCID: PMC5203726 DOI: 10.1186/s13287-016-0451-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/25/2016] [Accepted: 12/06/2016] [Indexed: 12/12/2022] Open
Abstract
Background Despite diverse pathogenesis, the common pathological change observed in age-related macular degeneration and in most hereditary retinal degeneration (RD) diseases is photoreceptor loss. Photoreceptor replacement by cell transplantation may be a feasible treatment for RD. The major obstacles to clinical translation of stem cell-based cell therapy in RD remain the difficulty of obtaining sufficient quantities of appropriate and safe donor cells and the poor integration of grafted stem cell-derived photoreceptors into the remaining retinal circuitry. Methods Eye-wall c-kit+/stage-specific embryonic antigen 1 (SSEA1)− cells were isolated via fluorescence-activated cell sorting, and their self-renewal and differentiation potential were detected by immunochemistry and flow cytometry in vitro. After labeling with quantum nanocrystal dots and transplantation into the subretinal space of rd1 RD mice, differentiation and synapse formation by daughter cells of the eye-wall c-kit+/SSEA1− cells were evaluated by immunochemistry and western blotting. Morphological changes of the inner retina of rd1 mice after cell transplantation were demonstrated by immunochemistry. Retinal function of rd1 mice that received cell grafts was tested via flash electroretinograms and the light/dark transition test. Results Eye-wall c-kit+/SSEA1− cells were self-renewing and clonogenic, and they retained their proliferative potential through more than 20 passages. Additionally, eye-wall c-kit+/SSEA1− cells were capable of differentiating into multiple retinal cell types including photoreceptors, bipolar cells, horizontal cells, amacrine cells, Müller cells, and retinal pigment epithelium cells and of transdifferentiating into smooth muscle cells and endothelial cells in vitro. The levels of synaptophysin and postsynaptic density-95 in the retinas of eye-wall c-kit+/SSEA1− cell-transplanted rd1 mice were significantly increased at 4 weeks post transplantation. The c-kit+/SSEA1− cells were capable of differentiating into functional photoreceptors that formed new synaptic connections with recipient retinas in rd1 mice. Transplantation also partially corrected the abnormalities of inner retina of rd1 mice. At 4 and 8 weeks post transplantation, the rd1 mice that received c-kit+/SSEA1− cells showed significant increases in a-wave and b-wave amplitude and the percentage of time spent in the dark area. Conclusions Grafted c-kit+/SSEA1− cells restored the retinal function of rd1 mice via regulating neural plasticity and forming new graft-to-host synapses. Electronic supplementary material The online version of this article (doi:10.1186/s13287-016-0451-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xi Chen
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China.,School of Medicine, Nankai University, Tianjin, 300071, China.,Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Zehua Chen
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China
| | - Zhengya Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China
| | - Chen Zhao
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China
| | - Yuxiao Zeng
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China
| | - Ting Zou
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China
| | - Caiyun Fu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China
| | - Xiaoli Liu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA.,Department of Pediatric Newborn Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Haiwei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China. .,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China.
| | - Zheng Qin Yin
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China. .,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, China.
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Di Siena S, Gimmelli R, Nori SL, Barbagallo F, Campolo F, Dolci S, Rossi P, Venneri MA, Giannetta E, Gianfrilli D, Feigenbaum L, Lenzi A, Naro F, Cianflone E, Mancuso T, Torella D, Isidori AM, Pellegrini M. Activated c-Kit receptor in the heart promotes cardiac repair and regeneration after injury. Cell Death Dis 2016; 7:e2317. [PMID: 27468693 PMCID: PMC4973348 DOI: 10.1038/cddis.2016.205] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 06/01/2016] [Accepted: 06/03/2016] [Indexed: 12/20/2022]
Abstract
The role of endogenous c-Kit receptor activation on cardiac cell homeostasis and repair remains largely unexplored. Transgenic mice carrying an activating point mutation (TgD814Y) in the kinase domain of the c-Kit gene were generated. c-KitTgD814Y receptor was expressed in the heart during embryonic development and postnatal life, in a similar timing and expression pattern to that of the endogenous gene, but not in the hematopoietic compartment allowing the study of a cardiac-specific phenotype. c-KitTgD814Y mutation produced a constitutive active c-Kit receptor in cardiac tissue and cells from transgenic mice as demonstrated by the increased phosphorylation of ERK1/2 and AKT, which are the main downstream molecular effectors of c-Kit receptor signaling. In adult transgenic hearts, cardiac morphology, size and total c-Kit+ cardiac cell number was not different compared with wt mice. However, when c-KitTgD814Y mice were subjected to transmural necrotic heart damage by cryoinjury (CI), all transgenic survived, compared with half of wt mice. In the sub-acute phase after CI, transgenic and wt mice showed similar heart damage. However, 9 days after CI, transgenic mice exhibited an increased number of c-Kit+CD31+ endothelial progenitor cells surrounding the necrotic area. At later follow-up, a consistent reduction of fibrotic area, increased capillary density and increased cardiomyocyte replenishment rate (as established by BrdU incorporation) were observed in transgenic compared with wt mice. Consistently, CD45−c-Kit+ cardiac stem cells isolated from transgenic c-KitTgD814Y mice showed an enhanced endothelial and cardiomyocyte differentiation potential compared with cells isolated from the wt. Constitutive activation of c-Kit receptor in mice is associated with an increased cardiac myogenic and vasculogenic reparative potential after injury, with a significant improvement of survival.
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Affiliation(s)
- S Di Siena
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University, Rome, Italy
| | - R Gimmelli
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - S L Nori
- Department of Medicine and Surgery, University of Salerno, Baronissi, Italy
| | - F Barbagallo
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - F Campolo
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - S Dolci
- Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - P Rossi
- Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - M A Venneri
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - E Giannetta
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - D Gianfrilli
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - L Feigenbaum
- Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer research, Frederick, MD, USA
| | - A Lenzi
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - F Naro
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University, Rome, Italy
| | - E Cianflone
- Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - T Mancuso
- Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - D Torella
- Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - A M Isidori
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - M Pellegrini
- Institute of Cell Biology and Neurobiology, CNR, Rome, Italy
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30
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Cho H, Balaji S, Hone NL, Moles CM, Sheikh AQ, Crombleholme TM, Keswani SG, Narmoneva DA. Diabetic wound healing in a MMP9-/- mouse model. Wound Repair Regen 2016; 24:829-840. [PMID: 27292154 DOI: 10.1111/wrr.12453] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 05/12/2016] [Indexed: 12/12/2022]
Abstract
Reduced mobilization of endothelial progenitor cells (EPCs) from the bone marrow (BM) and impaired EPC recruitment into the wound represent a fundamental deficiency in the chronic ulcers. However, mechanistic understanding of the role of BM-derived EPCs in cutaneous wound neovascularization and healing remains incomplete, which impedes development of EPC-based wound healing therapies. The objective of this study was to determine the role of EPCs in wound neovascularization and healing both under normal conditions and using single deficiency (EPC) or double-deficiency (EPC + diabetes) models of wound healing. MMP9 knockout (MMP9 KO) mouse model was utilized, where impaired EPC mobilization can be rescued by stem cell factor (SCF). The hypotheses were: (1) MMP9 KO mice exhibit impaired wound neovascularization and healing, which are further exacerbated with diabetes; (2) these impairments can be rescued by SCF administration. Full-thickness excisional wounds with silicone splints to minimize contraction were created on MMP9 KO mice with/without streptozotocin-induced diabetes in the presence or absence of tail-vein injected SCF. Wound morphology, vascularization, inflammation, and EPC mobilization and recruitment were quantified at day 7 postwounding. Results demonstrate no difference in wound closure and granulation tissue area between any groups. MMP9 deficiency significantly impairs wound neovascularization, increases inflammation, decreases collagen deposition, and decreases peripheral blood EPC (pb-EPC) counts when compared with wild-type (WT). Diabetes further increases inflammation, but does not cause further impairment in vascularization, as compared with MMP9 KO group. SCF improves neovascularization and increases EPCs to WT levels (both nondiabetic and diabetic MMP9 KO groups), while exacerbating inflammation in all groups. SCF rescues EPC-deficiency and impaired wound neovascularization in both diabetic and nondiabetic MMP9 KO mice. Overall, the results demonstrate that BM-derived EPCs play a significant role during wound neovascularization and that the SCF-based therapy with controlled inflammation could be a viable approach to enhance healing in chronic diabetic wounds.
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Affiliation(s)
- Hongkwan Cho
- Department of Biomedical, Chemical and Environmental Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, Ohio
| | - Swathi Balaji
- Department of Biomedical, Chemical and Environmental Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, Ohio.,Division of Pediatric Surgery, Baylor College of Medicine, Houston, Texas
| | - Natalie L Hone
- Department of Biomedical, Chemical and Environmental Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, Ohio
| | - Chad M Moles
- Division of Pediatric Surgery, Baylor College of Medicine, Houston, Texas
| | - Abdul Q Sheikh
- Department of Biomedical, Chemical and Environmental Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, Ohio
| | - Timothy M Crombleholme
- Children's Hospital Colorado and the University of Colorado School of Medicine, Aurora, Colorado
| | - Sundeep G Keswani
- Division of Pediatric Surgery, Baylor College of Medicine, Houston, Texas
| | - Daria A Narmoneva
- Department of Biomedical, Chemical and Environmental Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, Ohio.
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31
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Nguyen H, Aum D, Mashkouri S, Rao G, Vega Gonzales-Portillo JD, Reyes S, Borlongan CV. Growth factor therapy sequesters inflammation in affording neuroprotection in cerebrovascular diseases. Expert Rev Neurother 2016; 16:915-26. [PMID: 27152762 DOI: 10.1080/14737175.2016.1184086] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION In recent years, accumulating evidence has demonstrated the key role of inflammation in the progression of cerebrovascular diseases. Inflammation can persist over prolonged period of time after the initial insult providing a wider therapeutic window. Despite the acute endogenous upregulation of many growth factors after the injury, it is not sufficient to protect against inflammation and to regenerate the brain. Therapeutic approaches targeting both dampening inflammation and enhancing growth factors are likely to provide beneficial outcomes in cerebrovascular disease. AREAS COVERED In this mini review, we discuss major growth factors and their beneficial properties to combat the inflammation in cerebrovascular diseases. Emerging biotechnologies which facilitate the therapeutic effects of growth factors are also presented in an effort to provide insights into the future combination therapies incorporating both central and peripheral abrogation of inflammation. Expert commentary: Many studies discussed in this review have demonstrated the therapeutic effects of growth factors in treating cerebrovascular diseases. It is unlikely that one growth factor can be used to treat these complex diseases. Combination of growth factors and anti-inflammatory modulators may clinically improve outcomes for patients. In particular, transplantation of stem cells may be able to achieve both goals of modulating inflammation and upregulating growth factors. Large preclinical studies and multiple laboratory collaborations are needed to advance these findings from bench to bedside.
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Affiliation(s)
- Hung Nguyen
- a Department of Neurosurgery and Brain Repair , University of South Florida Morsani College of Medicine , Tampa , FL , USA
| | - David Aum
- a Department of Neurosurgery and Brain Repair , University of South Florida Morsani College of Medicine , Tampa , FL , USA
| | - Sherwin Mashkouri
- a Department of Neurosurgery and Brain Repair , University of South Florida Morsani College of Medicine , Tampa , FL , USA
| | - Gautam Rao
- a Department of Neurosurgery and Brain Repair , University of South Florida Morsani College of Medicine , Tampa , FL , USA
| | | | - Stephanny Reyes
- a Department of Neurosurgery and Brain Repair , University of South Florida Morsani College of Medicine , Tampa , FL , USA
| | - Cesario V Borlongan
- a Department of Neurosurgery and Brain Repair , University of South Florida Morsani College of Medicine , Tampa , FL , USA
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Shi H, Drummond CA, Fan X, Haller ST, Liu J, Malhotra D, Tian J. Hiding inside? Intracellular expression of non-glycosylated c-kit protein in cardiac progenitor cells. Stem Cell Res 2016; 16:795-806. [PMID: 27161312 DOI: 10.1016/j.scr.2016.04.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 04/15/2016] [Accepted: 04/22/2016] [Indexed: 12/23/2022] Open
Abstract
Cardiac progenitor cells including c-kit(+) cells and cardiosphere-derived cells (CDCs) play important roles in cardiac repair and regeneration. CDCs were reported to contain only small subpopulations of c-kit(+) cells and recent publications suggested that depletion of the c-kit(+) subpopulation of cells has no effect on regenerative properties of CDCs. However, our current study showed that the vast majority of CDCs from murine heart actually express c-kit, albeit, in an intracellular and non-glycosylated form. Immunostaining and flow cytometry showed that the fluorescent signal indicative of c-kit immunostaining significantly increased when cell membranes were permeabilized. Western blots further demonstrated that glycosylation of c-kit was increased during endothelial differentiation in a time dependent manner. Glycosylation inhibition by 1-deoxymannojirimycin hydrochloride (1-DMM) blocked c-kit glycosylation and reduced expression of endothelial cell markers such as Flk-1 and CD31 during differentiation. Pretreatment of these cells with a c-kit kinase inhibitor (imatinib mesylate) also attenuated Flk-1 and CD31 expression. These results suggest that c-kit glycosylation and its kinase activity are likely needed for these cells to differentiate into an endothelial lineage. In vivo, we found that intracellular c-kit expressing cells are located in the wall of cardiac blood vessels in mice subjected to myocardial infarction. In summary, our work demonstrated for the first time that c-kit is not only expressed in CDCs but may also directly participate in CDC differentiation into an endothelial lineage.
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Affiliation(s)
- Huilin Shi
- Department of Medicine, Division of Cardiovascular Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
| | - Christopher A Drummond
- Department of Medicine, Division of Cardiovascular Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
| | - Xiaoming Fan
- Department of Medicine, Division of Cardiovascular Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
| | - Steven T Haller
- Department of Medicine, Division of Cardiovascular Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
| | - Jiang Liu
- Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA
| | - Deepak Malhotra
- Department of Medicine, Division of Cardiovascular Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
| | - Jiang Tian
- Department of Medicine, Division of Cardiovascular Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA.
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Benedetti F, Poletti S, Hoogenboezem TA, Locatelli C, Ambrée O, de Wit H, Wijkhuijs AJM, Mazza E, Bulgarelli C, Vai B, Colombo C, Smeraldi E, Arolt V, Drexhage HA. Stem Cell Factor (SCF) is a putative biomarker of antidepressant response. J Neuroimmune Pharmacol 2016; 11:248-58. [DOI: 10.1007/s11481-016-9672-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 04/14/2016] [Indexed: 02/06/2023]
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34
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Reeve RL, Yammine SZ, DeVeale B, van der Kooy D. Targeted activation of primitive neural stem cells in the mouse brain. Eur J Neurosci 2016; 43:1474-85. [DOI: 10.1111/ejn.13228] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 05/14/2015] [Accepted: 02/29/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Rachel L. Reeve
- Institute of Medical Science; University of Toronto; 160 College St. W. 1130 Toronto ON Canada
| | | | - Brian DeVeale
- Department of Molecular Genetics; University of Toronto; Toronto ON Canada
| | - Derek van der Kooy
- Institute of Medical Science; University of Toronto; 160 College St. W. 1130 Toronto ON Canada
- Department of Molecular Genetics; University of Toronto; Toronto ON Canada
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35
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Yu JH, Seo JH, Lee JY, Lee MY, Cho SR. Induction of Neurorestoration From Endogenous Stem Cells. Cell Transplant 2016; 25:863-82. [PMID: 26787093 DOI: 10.3727/096368916x690511] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Neural stem cells (NSCs) persist in the subventricular zone lining the ventricles of the adult brain. The resident stem/progenitor cells can be stimulated in vivo by neurotrophic factors, hematopoietic growth factors, magnetic stimulation, and/or physical exercise. In both animals and humans, the differentiation and survival of neurons arising from the subventricular zone may also be regulated by the trophic factors. Since stem/progenitor cells present in the adult brain and the production of new neurons occurs at specific sites, there is a possibility for the treatment of incurable neurological diseases. It might be feasible to induce neurogenesis, which would be particularly efficacious in the treatment of striatal neurodegenerative conditions such as Huntington's disease, as well as cerebrovascular diseases such as ischemic stroke and cerebral palsy, conditions that are widely seen in the clinics. Understanding of the molecular control of endogenous NSC activation and progenitor cell mobilization will likely provide many new opportunities as therapeutic strategies. In this review, we focus on endogenous stem/progenitor cell activation that occurs in response to exogenous factors including neurotrophic factors, hematopoietic growth factors, magnetic stimulation, and an enriched environment. Taken together, these findings suggest the possibility that functional brain repair through induced neurorestoration from endogenous stem cells may soon be a clinical reality.
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Affiliation(s)
- Ji Hea Yu
- Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
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36
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Neubauer V, Wegleiter K, Posod A, Urbanek M, Wechselberger K, Kiechl-Kohlendorfer U, Keller M, Griesmaier E. Delayed application of the haematopoietic growth factors G-CSF/SCF and FL reduces neonatal excitotoxic brain injury. Brain Res 2016; 1634:94-103. [PMID: 26772988 DOI: 10.1016/j.brainres.2015.12.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/03/2015] [Accepted: 12/29/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Developmental brain injury results in cognitive and motor deficits in the preterm infant. Enhanced glutamate release and subsequent receptor activation are major pathogenetic factors. The effect of haematopoietic growth factors, such as granulocyte colony-stimulating factor (G-CSF), stem cell factor (SCF) and flt-3 ligand (FL) on neonatal brain injury is controversially discussed. Timing of treatment is known to be a crucial factor. Based on the hypothesis that an exacerbation of injury is caused by administration of substances in the acute phase, the objective of this study was to evaluate the effect of delayed administration of G-CSF/SCF and FL to protect against excitotoxic brain injury in vivo. METHODS In an established neonatal mouse model of excitotoxic brain injury, we evaluated the effect of daily intraperitoneal doses of G-CSF/SCF or FL, starting 60 h after the excitotoxic insult. RESULTS Intraperitoneal injections of G-CSF/SCF and FL, given 60 h after the excitotoxic insult, significantly reduced lesion size at postnatal days 10, 18 and 90. G-CSF/SCF treatment resulted in a decrease in apoptotic cell death indicated by reduced caspase-3 activation. G-CSF/SCF and FL treatment did not affect apoptosis-inducing factor-dependent apoptosis or cell proliferation. CONCLUSION We show that delayed systemic treatment with the haematopoietic growth factors G-CSF/SCF and FL protects against N-methyl-D-aspartate receptor-mediated developmental excitotoxic brain damage. Our results suggest that neuroprotective effects in this neonatal animal model of excitotoxic brain injury depend on the timing of drug administration after the insult.
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Affiliation(s)
- Vera Neubauer
- Department of Paediatrics II (Neonatology), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Karina Wegleiter
- Department of Paediatrics II (Neonatology), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Anna Posod
- Department of Paediatrics II (Neonatology), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Martina Urbanek
- Department of Paediatrics II (Neonatology), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Karina Wechselberger
- Department of Paediatrics II (Neonatology), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Ursula Kiechl-Kohlendorfer
- Department of Paediatrics II (Neonatology), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Matthias Keller
- Kinderklinik Dritter Orden, Munich Technical University, Bischof Altmann-Strasse 9, 94032 Passau, Germany
| | - Elke Griesmaier
- Department of Paediatrics II (Neonatology), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria.
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Tan S, Zhi P, Luo Z, Shi J. Severe instead of mild hyperglycemia inhibits neurogenesis in the subventricular zone of adult rats after transient focal cerebral ischemia. Neuroscience 2015; 303:138-48. [DOI: 10.1016/j.neuroscience.2015.06.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 06/18/2015] [Accepted: 06/22/2015] [Indexed: 01/04/2023]
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Verma V, Samanthapudi K, Raviprakash R. Classic Studies on the Potential of Stem Cell Neuroregeneration. JOURNAL OF THE HISTORY OF THE NEUROSCIENCES 2015; 25:123-141. [PMID: 26308908 DOI: 10.1080/0964704x.2015.1039904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The 1990s and 2000s were the beginning of an exciting time period for developmental neuroscience and neural stem cell research. By better understanding brain plasticity and the birth of new neurons in the adult brain, contrary to established dogma, hope for therapy from devastating neurological diseases was generated. The potential for stem cells to provide functional recovery in humans remains to be further tested and to further move into the clinical trial realm. The future certainly has great promise on stem cells to assist in alleviation of difficult-to-treat neurologic disorders. This article reviews classic studies of the 1990s and 2000s that paved the way for the advances of today, which can in turn lead to tomorrow's therapies.
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Affiliation(s)
- Vivek Verma
- a Department of Neuroscience , University of Pittsburgh , Pittsburgh , PA , USA
| | | | - Ratujit Raviprakash
- a Department of Neuroscience , University of Pittsburgh , Pittsburgh , PA , USA
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Xiang J, Yan S, Li SH, Li XJ. Postnatal loss of hap1 reduces hippocampal neurogenesis and causes adult depressive-like behavior in mice. PLoS Genet 2015; 11:e1005175. [PMID: 25875952 PMCID: PMC4398408 DOI: 10.1371/journal.pgen.1005175] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 03/25/2015] [Indexed: 12/11/2022] Open
Abstract
Depression is a serious mental disorder that affects a person’s mood, thoughts, behavior, physical health, and life in general. Despite our continuous efforts to understand the disease, the etiology of depressive behavior remains perplexing. Recently, aberrant early life or postnatal neurogenesis has been linked to adult depressive behavior; however, genetic evidence for this is still lacking. Here we genetically depleted the expression of huntingtin-associated protein 1 (Hap1) in mice at various ages or in selective brain regions. Depletion of Hap1 in the early postnatal period, but not later life, led to a depressive-like phenotype when the mice reached adulthood. Deletion of Hap1 in adult mice rendered the mice more susceptible to stress-induced depressive-like behavior. Furthermore, early Hap1 depletion impaired postnatal neurogenesis in the dentate gyrus (DG) of the hippocampus and reduced the level of c-kit, a protein expressed in neuroproliferative zones of the rodent brain and that is stabilized by Hap1. Importantly, stereotaxically injected adeno-associated virus (AAV) that directs the expression of c-kit in the hippocampus promoted postnatal hippocampal neurogenesis and ameliorated the depressive-like phenotype in conditional Hap1 KO mice, indicating a link between postnatal-born hippocampal neurons and adult depression. Our results demonstrate critical roles for Hap1 and c-kit in postnatal neurogenesis and adult depressive behavior, and also suggest that genetic variations affecting postnatal neurogenesis may lead to adult depression. Although the majority of the neurons in the brain are generated during embryonic stage, new neurons are continuously being produced postnatally, and at a much lower rate in adulthood. As postnatal neurogenesis is a key component of the brain maturation process that creates dynamic ‘wirings’ in the brain necessary for an individual to grow, learn, and cope with the external world, attenuated postnatal neurogenesis may affect an individual’s mental stability, rendering a higher susceptibility to depression later in life. In the current study, we genetically ablated the expression of huntingtin-associated protein 1 (Hap1) in mice at various ages or in selective brain regions, and found that early loss of Hap1 significantly reduces postnatal hippocampal neurogenesis, and leads to adult depressive-like behavior. We also found c-kit as an effector to mediate the neurogenesis defect and adult depressive-like phenotype in mice lacking Hap1. The results provide the first genetic evidence to demonstrate the importance of postnatal neurogenesis in adult depression, and may offer new avenues in the prevention and treatment of depression. Our study also has potential implications to other adult-onset mental disorders.
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Affiliation(s)
- Jianxing Xiang
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Sen Yan
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Shi-Hua Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, United States of America
- * E-mail: (SHL); (XJL)
| | - Xiao-Jiang Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, United States of America
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- * E-mail: (SHL); (XJL)
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Chan TM, Harn HJ, Lin HP, Chiu SC, Lin PC, Wang HI, Ho LI, Chuu CP, Chiou TW, Hsieh AC, Chen YW, Ho WY, Lin SZ. The use of ADSCs as a treatment for chronic stroke. Cell Transplant 2015; 23:541-7. [PMID: 24816449 DOI: 10.3727/096368914x678409] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Stroke is one of the disorders for which clinically effective therapeutic modalities are most needed, and numerous ways have been explored to attempt to investigate their feasibilities. However, ischemic- or hemorrhagic-induced inflammatory neuron death causes irreversible injuries and infarction regions, and there are currently no truly effective drugs available as therapy. It is therefore urgent to be able to provide a fundamental treatment method to regenerate neuronal brain cells, and therefore, the use of stem cells for curing chronic stroke could be a major breakthrough development. In this review, we describe the features and classification of stroke and focus on the benefits of adipose tissue-derived stem cells and their applications in stroke animal models. The results show that cell-based therapies have resulted in significant improvements in neuronal behaviors and functions through different molecular mechanisms, and no safety problems have so far arisen after transplantation. Further, we propose a clinical possibility to create a homing niche by reducing the degree of invasive intracerebroventricular transplantation and combining it with continuous intravenous administration to achieve a complete cure.
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Affiliation(s)
- Tzu-Min Chan
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
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Zaghloul N, Patel H, Codipilly C, Marambaud P, Dewey S, Frattini S, Huerta PT, Nasim M, Miller EJ, Ahmed M. Overexpression of extracellular superoxide dismutase protects against brain injury induced by chronic hypoxia. PLoS One 2014; 9:e108168. [PMID: 25268361 PMCID: PMC4182464 DOI: 10.1371/journal.pone.0108168] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 08/19/2014] [Indexed: 12/14/2022] Open
Abstract
Extracellular superoxide dismutase (EC-SOD) is an isoform of SOD normally found both intra- and extra-cellularly and accounting for most SOD activity in blood vessels. Here we explored the role of EC-SOD in protecting against brain damage induced by chronic hypoxia. EC-SOD Transgenic mice, were exposed to hypoxia (FiO2.1%) for 10 days (H-KI) and compared to transgenic animals housed in room air (RA-KI), wild type animals exposed to hypoxia (H-WT or wild type mice housed in room air (RA-WT). Overall brain metabolism evaluated by positron emission tomography (PET) showed that H-WT mice had significantly higher uptake of 18FDG in the brain particularly the hippocampus, hypothalamus, and cerebellum. H-KI mice had comparable uptake to the RA-KI and RA-WT groups. To investigate the functional state of the hippocampus, electrophysiological techniques in ex vivo hippocampal slices were performed and showed that H-KI had normal synaptic plasticity, whereas H-WT were severely affected. Markers of oxidative stress, GFAP, IBA1, MIF, and pAMPK showed similar values in the H-KI and RA-WT groups, but were significantly increased in the H-WT group. Caspase-3 assay and histopathological studies showed significant apoptosis/cell damage in the H-WT group, but no significant difference in the H-KI group compared to the RA groups. The data suggest that EC-SOD has potential prophylactic and therapeutic roles in diseases with compromised brain oxygenation.
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Affiliation(s)
- Nahla Zaghloul
- Division of Neonatal-Perinatal Medicine, The Ohio State University and Nationwide Children's Hospital, Columbus, Ohio, United States of America
| | - Hardik Patel
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center of New York and Lilling Family Research laboratory, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Champa Codipilly
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center of New York and Lilling Family Research laboratory, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Philippe Marambaud
- Laboratory of Memory Disorders, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Stephen Dewey
- Neuroimaging Department, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Stephen Frattini
- Laboratory of Immune & Neural Networks, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Patricio T. Huerta
- Laboratory of Immune & Neural Networks, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
- Department of Molecular Medicine, Hofstra North Shore LIJ School of Medicine, New York, United States of America
| | - Mansoor Nasim
- Department of Pathology, NSL-IJ, Manhasset, New York, United States of America
| | - Edmund J. Miller
- Department of Molecular Medicine, Hofstra North Shore LIJ School of Medicine, New York, United States of America
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center of New York and Lilling Family Research laboratory, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Mohamed Ahmed
- Division of Neonatal-Perinatal Medicine, The Ohio State University and Nationwide Children's Hospital, Columbus, Ohio, United States of America
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center of New York and Lilling Family Research laboratory, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
- * E-mail:
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Navarrete-Opazo A, Mitchell GS. Therapeutic potential of intermittent hypoxia: a matter of dose. Am J Physiol Regul Integr Comp Physiol 2014; 307:R1181-97. [PMID: 25231353 DOI: 10.1152/ajpregu.00208.2014] [Citation(s) in RCA: 290] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Intermittent hypoxia (IH) has been the subject of considerable research in recent years, and triggers a bewildering array of both detrimental and beneficial effects in multiple physiological systems. Here, we review the extensive literature concerning IH and its impact on the respiratory, cardiovascular, immune, metabolic, bone, and nervous systems. One major goal is to define relevant IH characteristics leading to safe, protective, and/or therapeutic effects vs. pathogenesis. To understand the impact of IH, it is essential to define critical characteristics of the IH protocol under investigation, including potentially the severity of hypoxia within episodes, the duration of hypoxic episodes, the number of hypoxic episodes per day, the pattern of presentation across time (e.g., within vs. consecutive vs. alternating days), and the cumulative time of exposure. Not surprisingly, severe/chronic IH protocols tend to be pathogenic, whereas any beneficial effects are more likely to arise from modest/acute IH exposures. Features of the IH protocol most highly associated with beneficial vs. pathogenic outcomes include the level of hypoxemia within episodes and the number of episodes per day. Modest hypoxia (9-16% inspired O2) and low cycle numbers (3-15 episodes per day) most often lead to beneficial effects without pathology, whereas severe hypoxia (2-8% inspired O2) and more episodes per day (48-2,400 episodes/day) elicit progressively greater pathology. Accumulating evidence suggests that "low dose" IH (modest hypoxia, few episodes) may be a simple, safe, and effective treatment with considerable therapeutic potential for multiple clinical disorders.
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Affiliation(s)
- Angela Navarrete-Opazo
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Gordon S Mitchell
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, Wisconsin
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Goldstein BJ, Goss GM, Hatzistergos KE, Rangel EB, Seidler B, Saur D, Hare JM. Adult c-Kit(+) progenitor cells are necessary for maintenance and regeneration of olfactory neurons. J Comp Neurol 2014; 523:15-31. [PMID: 25044230 DOI: 10.1002/cne.23653] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/15/2014] [Accepted: 07/16/2014] [Indexed: 12/28/2022]
Abstract
The olfactory epithelium houses chemosensory neurons, which transmit odor information from the nose to the brain. In adult mammals, the olfactory epithelium is a uniquely robust neuroproliferative zone, with the ability to replenish its neuronal and non-neuronal populations due to the presence of germinal basal cells. The stem and progenitor cells of these germinal layers, and their regulatory mechanisms, remain incompletely defined. Here we show that progenitor cells expressing c-Kit, a receptor tyrosine kinase marking stem cells in a variety of embryonic tissues, are required for maintenance of the adult neuroepithelium. Mouse genetic fate-mapping analyses show that embryonically, a c-Kit(+) population contributes to olfactory neurogenesis. In adults under conditions of normal turnover, there is relatively sparse c-Kit(+) progenitor cell (ckPC) activity. However, after experimentally induced neuroepithelial injury, ckPCs are activated such that they reconstitute the neuronal population. There are also occasional non-neuronal cells found to arise from ckPCs. Moreover, the selective depletion of the ckPC population, utilizing temporally controlled targeted diphtheria toxin A expression, results in failure of neurogenesis after experimental injury. Analysis of this model indicates that most ckPCs reside among the globose basal cell populations and act downstream of horizontal basal cells, which can serve as stem cells. Identification of the requirement for olfactory c-Kit-expressing progenitors in olfactory maintenance provides new insight into the mechanisms involved in adult olfactory neurogenesis. Additionally, we define an important and previously unrecognized site of adult c-Kit activity.
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Affiliation(s)
- Bradley J Goldstein
- Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, Florida, 33136; Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, 33136
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Chen L, Ye H, Wang X, Tang X, Mao Y, Zhao Y, Wu Z, Mao XO, Xie L, Jin K, Yao Y. Evidence of brain tumor stem progenitor-like cells with low proliferative capacity in human benign pituitary adenoma. Cancer Lett 2014; 349:61-6. [DOI: 10.1016/j.canlet.2014.03.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 03/13/2014] [Accepted: 03/25/2014] [Indexed: 01/08/2023]
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Naureen I, Waheed KAI, Rathore AW, Victor S, Mallucci C, Goodden JR, Chohan SN, Miyan JA. Fingerprint changes in CSF composition associated with different aetiologies in human neonatal hydrocephalus: inflammatory cytokines. Childs Nerv Syst 2014; 30:1155-64. [PMID: 24733414 DOI: 10.1007/s00381-014-2415-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 03/27/2014] [Indexed: 12/14/2022]
Abstract
PURPOSE Hydrocephalus (HC) has a multifactorial and complex picture of pathophysiology due to aetiology, age at and duration since onset. We have previously identified distinctions in markers of cell death associated with different aetiologies. Here, we examined cerebrospinal fluid (CSF) from human HC neonates for cytokines to identify further distinguishing features of different aetiologies. METHODS CSF was collected during routine lumbar puncture or ventricular tap from neonates with hydrocephalus, or with no neurological condition (normal controls). Total protein, Fas receptor, Fas ligand, stem cell factor (SCF), hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF), insulin growth factor-1 (IGF-1), tumour necrosis factor alpha (TNF-α) and interleukin 6 (IL-6) were measured and compared between 8 unaffected and 28 HC neonatal CSF samples. RESULTS Total protein was significantly (P < 0.05) raised in late-onset hydrocephalus (LOH). Fas receptor was raised (P < 0.05) in post-haemorrhagic hydrocephalus (PHH) and spina bifida with hydrocephalus (SB/HC), but no difference in Fas ligand was found. SCF was raised (P < 0.05) in SB/HC. HGF was found in all HC and was increased (P < 0.01) in PHH. Increased VEGF was found in PHH (P < 0.01) and SB/HC (P < 0.05). Variable levels of IL-6, TNF-α and IGF-1 were found in all HC groups compared with none in normal. CONCLUSIONS LOH was unusual with significantly raised total protein indicating an inflammatory state. Increased Fas receptor, VEGF, IGF-1 and HGF suggest anti-apoptotic and repair mechanism activation. By contrast, elevated TNF-α and IL-6 indicate inflammatory processes in these neonatal brains. Taken with our previous study, these data indicate that different pathophysiology, inflammation and repair are occurring in HC of different aetiologies and that additional treatment strategies may benefit these infants in addition to fluid diversion.
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Affiliation(s)
- Irum Naureen
- Faculty of Life Sciences, The University of Manchester, AV Hill Building, Oxford Road, Manchester, M13 9PT, UK
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Terashima T, Kojima H, Urabe H, Yamakawa I, Ogawa N, Kawai H, Chan L, Maegawa H. Stem cell factor-activated bone marrow ameliorates amyotrophic lateral sclerosis by promoting protective microglial migration. J Neurosci Res 2014; 92:856-69. [PMID: 24936617 PMCID: PMC4061499 DOI: 10.1002/jnr.23368] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive disease associated with motor neuron death. Several experimental treatments, including cell therapy using hematopoietic or neuronal stem cells, have been tested in ALS animal models, but therapeutic benefits have been modest. Here we used a new therapeutic strategy, bone marrow transplantation (BMT) with stem cell factor (SCF)- or FMS-like tyrosine kinase 3 (flt3)-activated bone marrow (BM) cells for the treatment of hSOD1(G93A) transgenic mice. Motor function and survival showed greater improvement in the SCF group than in the group receiving BM cells that had not been activated (BMT alone group), although no improvement was shown in the flt3 group. In addition, larger numbers of BM-derived cells that expressed the microglia marker Iba1 migrated to the spinal cords of recipient mice compared with the BMT alone group. Moreover, after SCF activation, but not flt3 activation or no activation, the migrating microglia expressed glutamate transporter-1 (GLT-1). In spinal cords in the SCF group, inflammatory cytokines tumor necrosis factor-α and interleukin-1β were suppressed and the neuroprotective molecule insulin-like growth factor-1 increased relative to nontreatment hSOD1(G93A) transgenic mice. Therefore, SCF activation changed the character of the migrating donor BM cells, which resulted in neuroprotective effects. These studies have identified SCF-activated BM cells as a potential new therapeutic agent for the treatment of ALS.
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Affiliation(s)
- Tomoya Terashima
- Department of Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga, Japan
| | - Hideto Kojima
- Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga, Japan
| | - Hiroshi Urabe
- Department of Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga, Japan
| | - Isamu Yamakawa
- Department of Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga, Japan
| | - Nobuhiro Ogawa
- Department of Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga, Japan
| | - Hiromichi Kawai
- Department of Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga, Japan
| | - Lawrence Chan
- Departments of Medicine and Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Hiroshi Maegawa
- Department of Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga, Japan
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Pan S, Dangaria S, Gopinathan G, Yan X, Lu X, Kolokythas A, Niu Y, Luan X. SCF promotes dental pulp progenitor migration, neovascularization, and collagen remodeling - potential applications as a homing factor in dental pulp regeneration. Stem Cell Rev Rep 2014; 9:655-67. [PMID: 23703692 DOI: 10.1007/s12015-013-9442-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Stem cell factor (SCF) is a powerful chemokine that binds to the c-Kit receptor CD117 and has shown promise as a homing agent capable of progenitor cell recruitment. In the present study we have documented high levels of both SCF and its receptor c-Kit in differentiating dental pulp (DP) cells and in the sub-odontoblastic layer of Höhl. In vitro studies using human DP progenitors revealed a significant increase in cell proliferation after100 nM SCF application, explained by a 2-fold upregulation in cyclin D3 and FGF2 cell cycle regulators, and a 7-fold increase in CDK4 expression. DP cell migration in the presence of SCF was up-regulated 2.7-fold after a 24 h culture period, and this effect was accompanied by cytoskeletal rearrangement, a 1.5-fold increase in polymeric F-actin over G-actin, and a 1.8-fold increase in RhoA expression. Explaining the signaling effect of SCF on DP migration, PI3K/Akt and MEK/ERK pathway inhibitors were demonstrated to significantly reduce DP cell migration, while SCF alone doubled the number of migrated cells. ERK and AKT phosphorylation were dramatically upregulated already 3-5 min after SCF addition to the culture medium and declined thereafter, classifying SCF as a fast acting chemokine. When applied as an agent to promote tissue regeneration in subcutaneously implanted collagen sponges, SCF resulted in a 7-fold increase in the cell number in the implanted tissue construct, a more than 9-fold increase in capillaries, as well as collagen sponge remodeling and collagen fiber neogenesis. Together, these studies demonstrate the suitability of SCF as a potent aid in the regeneration of dental pulp and other mesenchymal tissues, capable of inducing cell homing, angiogenesis, and tissue remodeling.
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Affiliation(s)
- Shuang Pan
- School of Dentistry, Department of Endodontics, Harbin Medical University, Harbin, China
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Ho TJ, Chan TM, Ho LI, Lai CY, Lin CH, Macdonald I, Harn HJ, Lin JG, Lin SZ, Chen YH. The possible role of stem cells in acupuncture treatment for neurodegenerative diseases: a literature review of basic studies. Cell Transplant 2014; 23:559-66. [PMID: 24636189 DOI: 10.3727/096368914x678463] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This review reports on recent findings concerning the effects of acupuncture and electroacupuncture (EA) on stem cell mobilization and differentiation, in particular with regard to neurogenesis. Traditional Chinese acupuncture has a history of over 2,500 years and is becoming more popular worldwide. Evidence has demonstrated that acupuncture may be of benefit in stroke rehabilitation, parkinsonism, dementia, and depression. This article reviews recent studies concerning the effects of acupuncture/EA on stem cell mobilization and on progenitor cell proliferation in the CNS. The reviewed evidence indicates that acupuncture/EA has beneficial effects in several neurodegenerative diseases, and it may prove to be a nondrug method for mobilizing stem cells in the CNS.
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Affiliation(s)
- Tsung-Jung Ho
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
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Abstract
OBJECTIVE AND BACKGROUND FOXJ1 is a member of the Forkhead/winged-helix (Fox) family of transcription factors, which is required for the differentiation of the cells acting as adult neural stem cells which participate in neurogenesis and give rise to neurons, astrocytes, oligodendrocytes. The expression pattern of FOXJ1 in the brain after cerebral ischemia has so far not been described. In the current study, we investigated the expression pattern of FOXJ1 in the rat brain after cerebral ischemia by animal model. METHODS We performed a middle cerebral artery occlusion (MCAO) model in adult rats and investigated the expression of FOXJ1 in the brain by Western blotting and immunochemistry; double immunofluorescence staining was used to analyze FOXJ1's co-expression with Ki67. RESULTS Western blot analysis showed that the expression of FOXJ1 was lower than normal and sham-operated brain after cerebral ischemia, but the level of FOXJ1 gradually increased from Day 1 to Day 14. Immuohistochemical staining suggested that the immunostaining of FOXJ1 deposited strongly in the ipsilateral and contralateral hemisphere in the cortical penumbra (CP). There was no FOXJ1 expression in the ischemic core (IC). The positive cells in the cortical penumbra might migrate to the ischemic core. In addition, double immunofluorescence staining revealed that FOXJ1 was co-expressed with mAP-2 and gFAP, and Ki67 had the colocalization with NeuN, GFAP, and FOXJ1. CONCLUSIONS All our findings suggest that FOXJ1 plays an important role on neuronal production and neurogenesis in the adult brain after cerebral ischemia.
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Su Y, Cui L, Piao C, Li B, Zhao LR. The effects of hematopoietic growth factors on neurite outgrowth. PLoS One 2013; 8:e75562. [PMID: 24116056 PMCID: PMC3792965 DOI: 10.1371/journal.pone.0075562] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 08/14/2013] [Indexed: 01/06/2023] Open
Abstract
Stem cell factor (SCF) and granulocyte colony-stimulating factor (G-CSF) are initially discovered as the essential hematopoietic growth factors regulating bone marrow stem cell proliferation and differentiation, and SCF in combination with G-CSF (SCF+G-CSF) has synergistic effects on bone marrow stem cell mobilization. In this study we have determined the effect of SCF and G-CSF on neurite outgrowth in rat cortical neurons. Using molecular and cellular biology and live cell imaging approaches, we have revealed that receptors for SCF and G-CSF are expressed on the growth core of cortical neurons, and that SCF+G-CSF synergistically enhances neurite extension through PI3K/AKT and NFκB signaling pathways. Moreover, SCF+G-CSF induces much greater NFκB activation, NFκB transcriptional binding and brain-derived neurotrophic factor (BDNF) production than SCF or G-CSF alone. In addition, we have also observed that BDNF, the target gene of NFκB, is required for SCF+G-CSF-induced neurite outgrowth. These data suggest that SCF+G-CSF has synergistic effects to promote neurite growth. This study provides new insights into the contribution of hematopoietic growth factors in neuronal plasticity.
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Affiliation(s)
- Ye Su
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, United States of America
| | - Lili Cui
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, United States of America
- Department of Neurosurgery, State University of New York Upstate Medical University, Syracuse, New York, United States of America
| | - Chunshu Piao
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, United States of America
| | - Bin Li
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, United States of America
| | - Li-Ru Zhao
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, United States of America
- Department of Neurosurgery, State University of New York Upstate Medical University, Syracuse, New York, United States of America
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, Louisiana, United States of America
- * E-mail:
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