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Gutierrez-Castañeda NE, Martínez-Rojas VA, Ochoa-de la Paz LD, Galván EJ. The bidirectional role of GABAA and GABAB receptors during the differentiation process of neural precursor cells of the subventricular zone. PLoS One 2024; 19:e0305853. [PMID: 38913632 PMCID: PMC11195948 DOI: 10.1371/journal.pone.0305853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 06/05/2024] [Indexed: 06/26/2024] Open
Abstract
The intricate process of neuronal differentiation integrates multiple signals to induce transcriptional, morphological, and electrophysiological changes that reshape the properties of neural precursor cells during their maturation and migration process. An increasing number of neurotransmitters and biomolecules have been identified as molecular signals that trigger and guide this process. In this sense, taurine, a sulfur-containing, non-essential amino acid widely expressed in the mammal brain, modulates the neuronal differentiation process. In this study, we describe the effect of taurine acting via the ionotropic GABAA receptor and the metabotropic GABAB receptor on the neuronal differentiation and electrophysiological properties of precursor cells derived from the subventricular zone of the mouse brain. Taurine stimulates the number of neurites and favors the dendritic complexity of the neural precursor cells, accompanied by changes in the somatic input resistance and the strength of inward and outward membranal currents. At the pharmacological level, the blockade of GABAA receptors inhibits these effects, whereas the stimulation of GABAB receptors has no positive effects on the taurine-mediated differentiation process. Strikingly, the blockade of the GABAB receptor with CGP533737 stimulates neurite outgrowth, dendritic complexity, and membranal current kinetics of neural precursor cells. The effects of taurine on the differentiation process involve Ca2+ mobilization and the activation of intracellular signaling cascades since chelation of intracellular calcium with BAPTA-AM, and inhibition of the CaMKII, ERK1/2, and Src kinase inhibits the neurite outgrowth of neural precursor cells of the subventricular zone.
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Affiliation(s)
- Nadia Estefanía Gutierrez-Castañeda
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México
| | - Vladimir Allex Martínez-Rojas
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México
| | - Lenin David Ochoa-de la Paz
- Laboratorio de Neurobiología Molecular y Celular de la Glía, Unidad de Investigación UNAM-APEC, México City, México
| | - Emilio J. Galván
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México
- Centro de Investigación sobre el Envejecimiento, Ciudad de México, México
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2
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Rodriguez-Perez LM, Ojeda-Pérez B, López-de-San-Sebastián J, García-Bonilla M, González-García M, Fernández-Muñoz B, Sánchez-Pernaute R, García-Martín ML, Domínguez-Pinos D, Cárdenas-García C, Jiménez AJ, Paez-Gonzalez P. Design of a Stem Cell-Based Therapy for Ependymal Repair in Hydrocephalus Associated With Germinal Matrix Hemorrhages. Stroke 2024; 55:1062-1074. [PMID: 38436063 PMCID: PMC10962438 DOI: 10.1161/strokeaha.123.044677] [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: 05/25/2023] [Accepted: 01/24/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND In preterm birth germinal matrix hemorrhages (GMHs) and the consequent posthemorrhagic hydrocephalus (PHH), the neuroepithelium/ependyma development is disrupted. This work is aimed to explore the possibilities of ependymal repair in GMH/PHH using a combination of neural stem cells, ependymal progenitors (EpPs), and mesenchymal stem cells. METHODS GMH/PHH was induced in 4-day-old mice using collagenase, blood, or blood serum injections. PHH severity was characterized 2 weeks later using magnetic resonance, immunofluorescence, and protein expression quantification with mass spectrometry. Ependymal restoration and wall regeneration after stem cell treatments were tested in vivo and in an ex vivo experimental approach using ventricular walls from mice developing moderate and severe GMH/PHH. The effect of the GMH environment on EpP differentiation was tested in vitro. Two-tailed Student t or Wilcoxon-Mann-Whitney U test was used to find differences between the treated and nontreated groups. ANOVA and Kruskal-Wallis tests were used to compare >2 groups with post hoc Tukey and Dunn multiple comparison tests, respectively. RESULTS PHH severity was correlated with the extension of GMH and ependymal disruption (means, 88.22% severe versus 19.4% moderate). GMH/PHH hindered the survival rates of the transplanted neural stem cells/EpPs. New multiciliated ependymal cells could be generated from transplanted neural stem cells and more efficiently from EpPs (15% mean increase). Blood and TNFα (tumor necrosis factor alpha) negatively affected ciliogenesis in cells committed to ependyma differentiation (expressing Foxj1 [forkhead box J1] transcription factor). Pretreatment with mesenchymal stem cells improved the survival rates of EpPs and ependymal differentiation while reducing the edematous (means, 18% to 0.5% decrease in severe edema) and inflammatory conditions in the explants. The effectiveness of this therapeutical strategy was corroborated in vivo (means, 29% to 0% in severe edema). CONCLUSIONS In GMH/PHH, the ependyma can be restored and edema decreased from either neural stem cell or EpP transplantation in vitro and in vivo. Mesenchymal stem cell pretreatment improved the success of the ependymal restoration.
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Affiliation(s)
- Luis M Rodriguez-Perez
- Departamento de Fisiología Humana, Histología Humana, Anatomía Patológica y Educación Física y Deportiva, University of Malaga, Spain. (L.M.R.-P.)
| | - Betsaida Ojeda-Pérez
- Departamento de Biología Celular, Genética y Fisiología, University of Malaga, Spain. (B.O.-P., J.L.-d.-S.-S., M.G.-G.)
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
| | - Javier López-de-San-Sebastián
- Departamento de Biología Celular, Genética y Fisiología, University of Malaga, Spain. (B.O.-P., J.L.-d.-S.-S., M.G.-G.)
| | - María García-Bonilla
- Department of Neurosurgery, Washington University in St. Louis School of Medicine, MO (M.G.-B.)
| | - Marcos González-García
- Departamento de Biología Celular, Genética y Fisiología, University of Malaga, Spain. (B.O.-P., J.L.-d.-S.-S., M.G.-G.)
| | - Beatriz Fernández-Muñoz
- Unidad de Producción y Reprogramación Celular, Red Andaluza para el diseño y traslación de Terapias Avanzadas, Sevilla, Spain (B.F.-M.)
| | - Rosario Sánchez-Pernaute
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain (R.S.-P.)
- Instituto de Investigación Sanitaria Biobizkai, Barakaldo, Spain (R.S.-P.)
| | - María L García-Martín
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina, Spain (M.L.G.-M.)
| | - Dolores Domínguez-Pinos
- Departamento de Radiología y Medicina Física, Oftalmología y Otorrinolaringología, University of Malaga, Spain. (D.D.-P.)
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
| | | | - Antonio J Jiménez
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
| | - Patricia Paez-Gonzalez
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
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3
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Ma XY, Yang TT, Liu L, Peng XC, Qian F, Tang FR. Ependyma in Neurodegenerative Diseases, Radiation-Induced Brain Injury and as a Therapeutic Target for Neurotrophic Factors. Biomolecules 2023; 13:754. [PMID: 37238624 PMCID: PMC10216700 DOI: 10.3390/biom13050754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/03/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
The neuron loss caused by the progressive damage to the nervous system is proposed to be the main pathogenesis of neurodegenerative diseases. Ependyma is a layer of ciliated ependymal cells that participates in the formation of the brain-cerebrospinal fluid barrier (BCB). It functions to promotes the circulation of cerebrospinal fluid (CSF) and the material exchange between CSF and brain interstitial fluid. Radiation-induced brain injury (RIBI) shows obvious impairments of the blood-brain barrier (BBB). In the neuroinflammatory processes after acute brain injury, a large amount of complement proteins and infiltrated immune cells are circulated in the CSF to resist brain damage and promote substance exchange through the BCB. However, as the protective barrier lining the brain ventricles, the ependyma is extremely vulnerable to cytotoxic and cytolytic immune responses. When the ependyma is damaged, the integrity of BCB is destroyed, and the CSF flow and material exchange is affected, leading to brain microenvironment imbalance, which plays a vital role in the pathogenesis of neurodegenerative diseases. Epidermal growth factor (EGF) and other neurotrophic factors promote the differentiation and maturation of ependymal cells to maintain the integrity of the ependyma and the activity of ependymal cilia, and may have therapeutic potential in restoring the homeostasis of the brain microenvironment after RIBI or during the pathogenesis of neurodegenerative diseases.
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Affiliation(s)
- Xin-Yu Ma
- Department of Physiology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou 434023, China
| | - Ting-Ting Yang
- Department of Physiology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou 434023, China
| | - Lian Liu
- Department of Pharmacology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou 434023, China
| | - Xiao-Chun Peng
- Department of Pathophysiology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou 434023, China
| | - Feng Qian
- Department of Physiology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou 434023, China
| | - Feng-Ru Tang
- Radiation Physiology Laboratory, Singapore Nuclear Research and Safety Initiative, National University of Singapore, Singapore 138602, Singapore
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Zhang H, Kong Q, Wang J, Jiang Y, Hua H. Complex roles of cAMP-PKA-CREB signaling in cancer. Exp Hematol Oncol 2020; 9:32. [PMID: 33292604 PMCID: PMC7684908 DOI: 10.1186/s40164-020-00191-1] [Citation(s) in RCA: 191] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 11/19/2020] [Indexed: 02/08/2023] Open
Abstract
Cyclic adenosine monophosphate (cAMP) is the first discovered second messenger, which plays pivotal roles in cell signaling, and regulates many physiological and pathological processes. cAMP can regulate the transcription of various target genes, mainly through protein kinase A (PKA) and its downstream effectors such as cAMP-responsive element binding protein (CREB). In addition, PKA can phosphorylate many kinases such as Raf, GSK3 and FAK. Aberrant cAMP-PKA signaling is involved in various types of human tumors. Especially, cAMP signaling may have both tumor-suppressive and tumor-promoting roles depending on the tumor types and context. cAMP-PKA signaling can regulate cancer cell growth, migration, invasion and metabolism. This review highlights the important roles of cAMP-PKA-CREB signaling in tumorigenesis. The potential strategies to target this pathway for cancer therapy are also discussed.
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Affiliation(s)
- Hongying Zhang
- Laboratory of Oncogene, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Qingbin Kong
- Laboratory of Oncogene, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Jiao Wang
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yangfu Jiang
- Laboratory of Oncogene, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Hui Hua
- Laboratory of Stem Cell Biology, West China Hospital, Sichuan University, Chengdu, 610041, China.
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5
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LRIG1-Mediated Inhibition of EGF Receptor Signaling Regulates Neural Precursor Cell Proliferation in the Neocortex. Cell Rep 2020; 33:108257. [PMID: 33053360 DOI: 10.1016/j.celrep.2020.108257] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/17/2020] [Accepted: 09/21/2020] [Indexed: 11/21/2022] Open
Abstract
Here, we ask how neural stem cells (NSCs) transition in the developing neocortex from a rapidly to a slowly proliferating state, a process required to maintain lifelong stem cell pools. We identify LRIG1, known to regulate receptor tyrosine kinase signaling in other cell types, as a negative regulator of cortical NSC proliferation. LRIG1 is expressed in murine cortical NSCs as they start to proliferate more slowly during embryogenesis and then peaks postnatally when they transition to give rise to a portion of adult NSCs. Constitutive or acute loss of Lrig1 in NSCs over this developmental time frame causes stem cell expansion due to increased proliferation. LRIG1 controls NSC proliferation by associating with and negatively regulating the epidermal growth factor receptor (EGFR). These data support a model in which LRIG1 dampens the stem cell response to EGFR ligands within the cortical environment to slow their proliferation as they transition to postnatal adult NSCs.
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Zhong L, Zhang H, Ding ZF, Li J, Lv JW, Pan ZJ, Xu DX, Yin ZS. Erythropoietin-Induced Autophagy Protects Against Spinal Cord Injury and Improves Neurological Function via the Extracellular-Regulated Protein Kinase Signaling Pathway. Mol Neurobiol 2020; 57:3993-4006. [PMID: 32647973 DOI: 10.1007/s12035-020-01997-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/22/2020] [Indexed: 12/12/2022]
Abstract
The objective of this study was to explore the neuroprotective molecular mechanisms of erythropoietin (EPO) in rats following spinal cord injury (SCI). First, a standard SCI model was established. After drug or saline treatment was administered, locomotor function was evaluated in rats using the Basso, Beattie, and Bresnahan (BBB) locomotor rating scale. H&E, Nissl, and TUNEL staining were performed to assess the ratio of cavities, number of motor neurons, and apoptotic cells in the damaged area. The relative protein and mRNA expressions were examined using western blot and qRT-PCR analyses, and the inflammatory markers, axon special protein, and neuromuscular junctions (NMJs) were detected by immunofluorescence. Both doses of EPO notably improved locomotor function, but high-dose EPO was more effective than low-dose EPO. Moreover, EPO reduced the cavity ratio, cell apoptosis, and motor neuron loss in the damaged area, but enhanced the autophagy level and extracellular-regulated protein kinase (ERK) activity. Treatment with an ERK inhibitor significantly prevented the effect of EPO on SCI, and an activator mimicked the benefits of EPO. Further investigation revealed that EPO promoted SCI-induced autophagy via the ERK signaling pathway. EPO activates autophagy to promote locomotor function recovery in rats with SCI via the ERK signaling pathway.
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Affiliation(s)
- Lin Zhong
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, #218 Jixi Road, Hefei, 230022, China.,Department of Orthopedics, The Third Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Hui Zhang
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, #218 Jixi Road, Hefei, 230022, China
| | - Zheng-Fei Ding
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, #218 Jixi Road, Hefei, 230022, China
| | - Jian Li
- Department of Toxicology, School of Public Health, Anhui Medical University, #81 Mei Shan Road, Hefei, 230032, China.,Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, Hefei, China
| | - Jin-Wei Lv
- Department of Toxicology, School of Public Health, Anhui Medical University, #81 Mei Shan Road, Hefei, 230032, China.,Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, Hefei, China
| | - Zheng-Jun Pan
- Department of Orthopedics, The Third Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, #81 Mei Shan Road, Hefei, 230032, China. .,Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, Hefei, China.
| | - Zong-Sheng Yin
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, #218 Jixi Road, Hefei, 230022, China.
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7
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Goldberg DC, Fones L, Vivinetto AL, Caufield JT, Ratan RR, Cave JW. Manipulating Adult Neural Stem and Progenitor Cells with G-Quadruplex Ligands. ACS Chem Neurosci 2020; 11:1504-1518. [PMID: 32315155 DOI: 10.1021/acschemneuro.0c00194] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
G-quadruplexes are pervasive nucleic acid secondary structures in mammalian genomes and transcriptomes that regulate gene expression and genome duplication. Small molecule ligands that modify the stability of G-quadruplexes are widely studied in cancer, but whether G-quadruplex ligands can also be used to manipulate cell function under normal development and homeostatic conditions is largely unexplored. Here we show that two related G-quadruplex ligands (pyridostatin and carboxypyridostatin) can reduce proliferation of adult neural stem cell and progenitor cells derived from the adult mouse subventricular zone both in vitro and in vivo. Studies with neurosphere cultures show that pyridostatin reduces proliferation by a mechanism associated with DNA damage and cell death. By contrast, selectively targeting RNA G-quadruplex stability with carboxypyridostatin diminishes proliferation through a mechanism that promotes cell cycle exit and the production of oligodendrocyte progenitors. The ability to generate oligodendrocyte progenitors by targeting RNA G-quadruplex stability, however, is dependent on the cellular environment. Together, these findings show that ligands that can selectively stabilize RNA G-quadruplexes are an important, new class of molecular tool for neural stem and progenitor cell engineering, whereas ligands that target DNA G-quadruplexes have limited utility due to their toxicity.
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Affiliation(s)
- David C. Goldberg
- Burke Neurological Institute, White Plains, New York 10605, United States
| | - Lilah Fones
- Burke Neurological Institute, White Plains, New York 10605, United States
| | - Ana L. Vivinetto
- Burke Neurological Institute, White Plains, New York 10605, United States
| | - Joseph T. Caufield
- Burke Neurological Institute, White Plains, New York 10605, United States
| | - Rajiv R. Ratan
- Burke Neurological Institute, White Plains, New York 10605, United States
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York 10065, United States
| | - John W. Cave
- Burke Neurological Institute, White Plains, New York 10605, United States
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York 10065, United States
- Department of Chemistry and Life Science, United States Military Academy, West Point, New York 10996, United States
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8
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Jacques FJ, Silva TM, da Silva FE, Ornelas IM, Ventura ALM. Nucleotide P2Y13-stimulated phosphorylation of CREB is required for ADP-induced proliferation of late developing retinal glial progenitors in culture. Cell Signal 2017; 35:95-106. [PMID: 28347874 DOI: 10.1016/j.cellsig.2017.03.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/23/2017] [Accepted: 03/24/2017] [Indexed: 12/28/2022]
Abstract
Nucleotides stimulate phosphorylation of CREB to induce cell proliferation and survival in diverse cell types. We report here that ADP induces the phosphorylation of CREB in a time- and concentration-dependent manner in chick embryo retinal progenitors in culture. ADP-induced increase in phospho-CREB is mediated by P2 receptors as it is blocked by PPADS but not by the adenosine antagonists DPCPX or ZM241385. Incubation of the cultures with the CREB inhibitor KG-501 prevents ADP-induced incorporation of [3H]-thymidine, indicating that CREB is involved in retinal cell proliferation. No effect of this compound is observed on the viability of retinal progenitors. While no significant increase in CREB phosphorylation is observed with the P2Y1 receptor agonist MRS2365, ADP-induced phosphorylation of CREB is blocked by the P2Y13 receptor selective antagonist MRS2211, but not by MRS2179 or PSB0739, two antagonists of the P2Y1 and P2Y12 receptors, respectively, suggesting that ADP-induced CREB phosphorylation is mediated by P2Y13 receptors. ADP-induced increase in phospho-CREB is attenuated by the PI3K inhibitor LY294002 and completely prevented by the MEK inhibitor U0126, suggesting that at least ERK is involved in ADP-induced CREB phosphorylation. A pharmacological profile similar to the activation and inhibition of CREB phosphorylation is observed in the phosphorylation of ERK, suggesting that P2Y13 receptors mediate ADP induced ERK/CREB pathway in the cultures. While no increase in [3H]-thymidine incorporation is observed with the P2Y1 receptor agonist MRS2365, both MRS2179 and MRS2211 prevent ADP-mediated increase in [3H]-thymidine incorporation, but not progenitor's survival, suggesting that both P2Y1 and P2Y13 receptor subtypes are involved in ADP-induced cell proliferation. P2Y1 receptor-mediated increase in [Ca2+]i is observed in glial cells only when cultures maintained for 9days are used. In glia from cultures cultivated for only 2days, no increase in [Ca2+]i is detected with MRS2365 and no inhibition of ADP-mediated calcium response is observed with MRS2179. In contrast, MRS2211 attenuates ADP-mediated increase in [Ca2+]i in glial cells from cultures at both stages, suggesting the presence of P2Y13 receptors coupled to calcium mobilization in proliferating retinal glial progenitors in culture.
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Affiliation(s)
- Flavia Jesus Jacques
- Department of Neurobiology, Neuroscience Program, Fluminense Federal University, Outeiro de São João Batista s/n, Centro, Niterói, Rio de Janeiro CEP 24020-141, Brazil
| | - Thayane Martins Silva
- Department of Neurobiology, Neuroscience Program, Fluminense Federal University, Outeiro de São João Batista s/n, Centro, Niterói, Rio de Janeiro CEP 24020-141, Brazil
| | - Flavia Emenegilda da Silva
- Department of Neurobiology, Neuroscience Program, Fluminense Federal University, Outeiro de São João Batista s/n, Centro, Niterói, Rio de Janeiro CEP 24020-141, Brazil
| | - Isis Moraes Ornelas
- Department of Neurobiology, Neuroscience Program, Fluminense Federal University, Outeiro de São João Batista s/n, Centro, Niterói, Rio de Janeiro CEP 24020-141, Brazil
| | - Ana Lucia Marques Ventura
- Department of Neurobiology, Neuroscience Program, Fluminense Federal University, Outeiro de São João Batista s/n, Centro, Niterói, Rio de Janeiro CEP 24020-141, Brazil.
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Gargantini E, Lazzari L, Settanni F, Taliano M, Trovato L, Gesmundo I, Ghigo E, Granata R. Obestatin promotes proliferation and survival of adult hippocampal progenitors and reduces amyloid-β-induced toxicity. Mol Cell Endocrinol 2016; 422:18-30. [PMID: 26586206 DOI: 10.1016/j.mce.2015.11.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/05/2015] [Accepted: 11/07/2015] [Indexed: 12/31/2022]
Abstract
The ghrelin gene-derived peptide obestatin promotes survival in different cell types through a yet undefined receptor; however, its potential neuroprotective activities are still unknown. Here, obestatin effects were investigated on proliferation and survival of adult rat hippocampal progenitor cells (AHPs). Obestatin immunoreactivity was found in AHPs; moreover, obestatin binding to AHPs was displaced by the GLP-1R agonist Ex-4 and antagonist Ex-9. Furthermore, obestatin increased cell proliferation and survival in growth factor deprived medium and inhibited apoptosis; these effects were blocked by Ex-9. The underlying mechanisms involved Gαs/cAMP/PKA/CREB signaling, phosphorylation of ERK1/2 and PI3K/Akt, and the PI3K targets GSK-3β/β-catenin and mTOR. Obestatin also counteracted Aβ1-42-induced detrimental effects through inhibition of GSK-3β activity and Tau hyperphosphorylation, main hallmarks of neuronal death in Alzheimer's disease. These findings indicate a novel protective role for obestatin in AHPs and candidate this peptide as potential therapeutic target for increasing neurogenesis and for approaching neurodegenerative disorders.
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Affiliation(s)
- Eleonora Gargantini
- Laboratory of Molecular and Cellular Endocrinology, University of Torino, 10126 Torino, Italy; Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy
| | - Laura Lazzari
- Laboratory of Molecular and Cellular Endocrinology, University of Torino, 10126 Torino, Italy; Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy
| | - Fabio Settanni
- Laboratory of Molecular and Cellular Endocrinology, University of Torino, 10126 Torino, Italy; Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy
| | - Marina Taliano
- Laboratory of Molecular and Cellular Endocrinology, University of Torino, 10126 Torino, Italy; Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy
| | - Letizia Trovato
- Laboratory of Molecular and Cellular Endocrinology, University of Torino, 10126 Torino, Italy; Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy
| | - Iacopo Gesmundo
- Laboratory of Molecular and Cellular Endocrinology, University of Torino, 10126 Torino, Italy; Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy
| | - Ezio Ghigo
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy
| | - Riccarda Granata
- Laboratory of Molecular and Cellular Endocrinology, University of Torino, 10126 Torino, Italy; Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, 10126 Torino, Italy.
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10
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He X, Deng FJ, Ge JW, Yan XX, Pan AH, Li ZY. Effects of total saponins of Panax notoginseng on immature neuroblasts in the adult olfactory bulb following global cerebral ischemia/reperfusion. Neural Regen Res 2015; 10:1450-6. [PMID: 26604906 PMCID: PMC4625511 DOI: 10.4103/1673-5374.165514] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The main active components extracted from Panax notoginseng are total saponins. They have been shown to inhibit platelet aggregation, increase cerebral blood flow, improve neurological behavior, decrease infarct volume and promote proliferation and differentiation of neural stem cells in the hippocampus and lateral ventricles. However, there is a lack of studies on whether total saponins of Panax notoginseng have potential benefits on immature neuroblasts in the olfactory bulb following ischemia and reperfusion. This study established a rat model of global cerebral ischemia and reperfusion using four-vessel occlusion. Rats were administered total saponins of Panax notoginseng at 75 mg/kg intraperitoneally 30 minutes after ischemia then once a day, for either 7 or 14 days. Total saponins of Panax notoginseng enhanced the number of doublecortin (DCX)+ neural progenitor cells and increased co-localization of DCX with neuronal nuclei and phosphorylated cAMP response element-binding/DCX+ neural progenitor cells in the olfactory bulb at 7 and 14 days post ischemia. These findings indicate that following global brain ischemia/reperfusion, total saponins of Panax notoginseng promote differentiation of DCX+ cells expressing immature neuroblasts in the olfactory bulb and the underlying mechanism is related to the activation of the signaling pathway of cyclic adenosine monophosphate response element binding protein.
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Affiliation(s)
- Xu He
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China ; Department of Anatomy, Yiyang Medical College, Yiyang, Hunan Province, China
| | - Feng-Jun Deng
- Department of Pharmacy, Yiyang Medical College, Yiyang, Hunan Province, China
| | - Jin-Wen Ge
- Department of Integrated Traditional and Western Medicine, Hunan University of Traditional Chinese Medicine, Changsha, Hunan Province, China
| | - Xiao-Xin Yan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| | - Ai-Hua Pan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| | - Zhi-Yuan Li
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
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11
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Baptista S, Lasgi C, Benstaali C, Milhazes N, Borges F, Fontes-Ribeiro C, Agasse F, Silva AP. Methamphetamine decreases dentate gyrus stem cell self-renewal and shifts the differentiation towards neuronal fate. Stem Cell Res 2014; 13:329-41. [DOI: 10.1016/j.scr.2014.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 07/16/2014] [Accepted: 08/05/2014] [Indexed: 01/21/2023] Open
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12
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Li ZH, Li W, Shi JL, Tang MK. Nardosinone improves the proliferation, migration and selective differentiation of mouse embryonic neural stem cells. PLoS One 2014; 9:e91260. [PMID: 24614893 PMCID: PMC3948776 DOI: 10.1371/journal.pone.0091260] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Accepted: 02/10/2014] [Indexed: 11/18/2022] Open
Abstract
In this study, we investigated the impact of Nardosinone, a bioactive component in Nardostachys root, on the proliferation and differentiation of neural stem cells. The neural stem cells were isolated from cerebrums of embryonic day 14 CD1 mice. The proliferation of cells was monitored using the cell counting kit-8 assay, bromodeoxyuridine incorporation and cell cycle analysis. Cell migration and differentiation were investigated with the neurosphere assay and cell specific markers, respectively. The results showed that Nardosinone promotes cells proliferation and increases cells migration distance in a dose-dependent manner. Nardosinone also induces the selective differentiation of neural stem cells to neurons and oligodendrocytes, as indicated by the expression of microtubule-associated protein-2 and myelin basic protein, respectively. Nardosinone also increases the expression of phospho-extracellular signal-regulated kinase and phospho-cAMP response element binding protein during proliferation and differentiation. In conclusion, this study reveals the regulatory effects of Nardosinone on neural stem cells, which may have significant implications for the treatment of brain injury and neurodegenerative diseases.
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Affiliation(s)
- Ze-Hui Li
- Department of Biomedical Science, College of Medicine, University of Toledo, Toledo, Ohio, United States of America
- Department of Pharmacology, Beijing University of Chinese Medicine, Beijing, China
| | - Wei Li
- Department of Pharmacology, Beijing University of Chinese Medicine, Beijing, China
| | - Jin-Li Shi
- Department of Pharmacology, Beijing University of Chinese Medicine, Beijing, China
| | - Min-Ke Tang
- Department of Pharmacology, Beijing University of Chinese Medicine, Beijing, China
- * E-mail:
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13
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Schramm J, Schulte D. A fast and simple differentiation protocol to study the pro-neurogenic activity of soluble factors in neurospheres. Neurosci Lett 2014; 562:69-74. [DOI: 10.1016/j.neulet.2014.01.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 01/02/2014] [Indexed: 02/05/2023]
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14
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Galvez-Contreras AY, Quiñones-Hinojosa A, Gonzalez-Perez O. The role of EGFR and ErbB family related proteins in the oligodendrocyte specification in germinal niches of the adult mammalian brain. Front Cell Neurosci 2013; 7:258. [PMID: 24381541 PMCID: PMC3865447 DOI: 10.3389/fncel.2013.00258] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 11/27/2013] [Indexed: 12/13/2022] Open
Abstract
In the adult brain, multipotent progenitor cells have been identified in three areas: the ventricular-subventricular zone (VZ-SVZ), adjacent to the striatal wall of the lateral ventricles, the subgranular zone (SGZ), located at the dentate gyrus of the hippocampus and the subcallosal zone (SCZ), located between the corpus callosum and the CA1 and CA2 regions of the hippocampus. The neural progenitor cells of these regions express the epidermal growth factor receptor (EGFR, ErbB-1 or HER1). EGF, the most important ligand for the EGFR, is a potent mitogenic agent that stimulates proliferation, survival, migration and differentiation into the oligodendrocyte lineage. Other ErbB receptors also activate several intracellular pathways for oligodendrocyte specification, migration and survival. However, the specific downstream pathways related to oligodendrogenesis and the hierarchic interaction among intracellular signaling cascades is not well-known. We summarize the current data regarding the role of EGFR and ErbB family signaling on neural stem cells and the downstream cascades involved in oligodendrogenesis in the neurogenic niches of the adult brain. Understanding the mechanisms that regulate proliferation, differentiation, migration of oligodendrocytes and myelination is of critical importance for the field of neurobiology and constitutes a crucial step in the design of stem-cell-based therapies for demyelinating diseases.
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Affiliation(s)
| | - Alfredo Quiñones-Hinojosa
- Department of Neurological Surgery and Oncology, School of Medicine, Johns Hopkins University Baltimore, MD, USA
| | - Oscar Gonzalez-Perez
- Laboratorio de Neurociencias, Facultad de Psicologia, Universidad de Colima Colima, Mexico
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15
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Lee E, Sidoryk-Wêgrzynowicz M, Wang N, Webb A, Son DS, Lee K, Aschner M. GPR30 regulates glutamate transporter GLT-1 expression in rat primary astrocytes. J Biol Chem 2012; 287:26817-28. [PMID: 22645130 DOI: 10.1074/jbc.m112.341867] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The G protein-coupled estrogen receptor GPR30 contributes to the neuroprotective effects of 17β-estradiol (E2); however, the mechanisms associated with this protection have yet to be elucidated. Given that E2 increases astrocytic expression of glutamate transporter-1 (GLT-1), which would prevent excitotoxic-induced neuronal death, we proposed that GPR30 mediates E2 action on GLT-1 expression. To investigate this hypothesis, we examined the effects of G1, a selective agonist of GPR30, and GPR30 siRNA on astrocytic GLT-1 expression, as well as glutamate uptake in rat primary astrocytes, and explored potential signaling pathways linking GPR30 to GLT-1. G1 increased GLT-1 protein and mRNA levels, subject to regulation by both MAPK and PI3K signaling. Inhibition of TGF-α receptor suppressed the G1-induced increase in GLT-1 expression. Silencing GPR30 reduced the expression of both GLT-1 and TGF-α and abrogated the G1-induced increase in GLT-1 expression. Moreover, the G1-induced increase in GLT-1 protein expression was abolished by a protein kinase A inhibitor and an NF-κB inhibitor. G1 also enhanced cAMP response element-binding protein (CREB), as well as both NF-κB p50 and NF-κB p65 binding to the GLT-1 promoter. Finally, to model dysfunction of glutamate transporters, manganese was used, and G1 was found to attenuate manganese-induced impairment in GLT-1 protein expression and glutamate uptake. Taken together, the present data demonstrate that activation of GPR30 increases GLT-1 expression via multiple pathways, suggesting that GPR30 is worthwhile as a potential target to be explored for developing therapeutics of excitotoxic neuronal injury.
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Affiliation(s)
- Eunsook Lee
- Department of Physiology, Meharry Medical College, Nashville, Tennessee 37208, USA.
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Mantamadiotis T, Papalexis N, Dworkin S. CREB signalling in neural stem/progenitor cells: recent developments and the implications for brain tumour biology. Bioessays 2012; 34:293-300. [PMID: 22331586 DOI: 10.1002/bies.201100133] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This paper discusses the evidence for the role of CREB in neural stem/progenitor cell (NSPC) function and oncogenesis and how these functions may be important for the development and growth of brain tumours. The cyclic-AMP response element binding (CREB) protein has many roles in neurons, ranging from neuronal survival to higher order brain functions such as memory and drug addiction behaviours. Recent studies have revealed that CREB also has a role in NSPC survival, differentiation and proliferation. Recent work has shown that over-expression of CREB in transgenic animals can impart oncogenic properties on cells in various tissues and that aberrant CREB expression is associated with tumours in patients. It is the central position of CREB, downstream of key developmental and growth signalling pathways, which give CREB the ability to influence a spectrum of cell activities, such as cell survival, growth and differentiation in both normal and cancer cells.
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Affiliation(s)
- Theo Mantamadiotis
- Department of Pathology, The University of Melbourne, Parkville, Australia.
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Gómez-Gaviro MV, Scott CE, Sesay AK, Matheu A, Booth S, Galichet C, Lovell-Badge R. Betacellulin promotes cell proliferation in the neural stem cell niche and stimulates neurogenesis. Proc Natl Acad Sci U S A 2012; 109:1317-22. [PMID: 22232668 PMCID: PMC3268286 DOI: 10.1073/pnas.1016199109] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Neural stem cells (NSCs) reside in specialized niches in the adult mammalian brain, including the subventricular zone and the dentate gyrus, which act to control NSC behavior. Among other cell types within these niches, NSCs are found in close proximity to blood vessels. We carried out an analysis of the interaction between endothelial cells and NSCs, and show that betacellulin (BTC), a member of the EGF family and one of several signaling molecules made by the former, induces NSC proliferation and prevents spontaneous differentiation in culture. When infused into the lateral ventricle, BTC induces expansion of NSCs and neuroblasts, and promotes neurogenesis in the olfactory bulb and dentate gyrus, whereas specific blocking antibodies reduce the number of stem/progenitor cells. BTC-null mice are less able to regenerate neuroblast numbers compared with WT littermates following depletion of proliferating cells using cytosine-β-d-arabinofuranoside. BTC acts via both the EGF receptor, located on NSCs, and ErbB4, located on neuroblasts, with the latter explaining why its effects are distinct from those of EGF itself. Our results suggest that BTC could be a good candidate to aid regenerative therapies.
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Affiliation(s)
| | - Charlotte E. Scott
- Division of Stem Cell Biology and Developmental Genetics, MRC National Institute for Medical Research, London NW7 1AA, United Kingdom
| | - Abdul K. Sesay
- Division of Stem Cell Biology and Developmental Genetics, MRC National Institute for Medical Research, London NW7 1AA, United Kingdom
| | - Ander Matheu
- Division of Stem Cell Biology and Developmental Genetics, MRC National Institute for Medical Research, London NW7 1AA, United Kingdom
| | - Sarah Booth
- Division of Stem Cell Biology and Developmental Genetics, MRC National Institute for Medical Research, London NW7 1AA, United Kingdom
| | - Christophe Galichet
- Division of Stem Cell Biology and Developmental Genetics, MRC National Institute for Medical Research, London NW7 1AA, United Kingdom
| | - Robin Lovell-Badge
- Division of Stem Cell Biology and Developmental Genetics, MRC National Institute for Medical Research, London NW7 1AA, United Kingdom
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