1
|
Winkelman MA, Dai G. Bioengineered perfused human brain microvascular networks enhance neural progenitor cell survival, neurogenesis, and maturation. SCIENCE ADVANCES 2023; 9:eaaz9499. [PMID: 37163593 PMCID: PMC10171804 DOI: 10.1126/sciadv.aaz9499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 04/10/2023] [Indexed: 05/12/2023]
Abstract
Neural progenitor cells (NPCs) have the capability to self-renew and differentiate into neurons and glial cells. In the adult brain, NPCs are found near brain microvascular networks (BMVNs) in specialized microenvironments called the neurovascular niche (NVN). Although several in vitro NVN models have been previously reported, most do not properly recapitulate the intimate cellular interactions between NPCs and perfused brain microvessels. Here, we developed perfused BMVNs composed of primary human brain endothelial cells, pericytes, and astrocytes within microfluidic devices. When induced pluripotent stem cell-derived NPCs were introduced into BMVNs, we found that NPC survival, neurogenesis, and maturation were enhanced. The application of flow during BMVN coculture was also beneficial for neuron differentiation. Collectively, our work highlighted the important role of BMVNs and flow in NPC self-renewal and neurogenesis, as well as demonstrated our model's potential to study the biological and physical interactions of human NVN in vitro.
Collapse
Affiliation(s)
- Max A. Winkelman
- Department of Bioengineering, Northeastern University, Boston, MA, USA
| | | |
Collapse
|
2
|
Decoding the Roles of Astrocytes and Hedgehog Signaling in Medulloblastoma. ACTA ACUST UNITED AC 2021; 28:3058-3070. [PMID: 34436033 PMCID: PMC8395412 DOI: 10.3390/curroncol28040267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/01/2021] [Accepted: 08/04/2021] [Indexed: 01/09/2023]
Abstract
The molecular evolution of medulloblastoma is more complex than previously imagined, as emerging evidence suggests that multiple interactions between the tumor cells and components of the tumor microenvironment (TME) are important for tumor promotion and progression. The identification of several molecular networks within the TME, which interact with tumoral cells, has provided new clues to understand the tumorigenic roles of many TME components as well as potential therapeutic targets. In this review, we discuss the most recent studies regarding the roles of astrocytes in supporting sonic hedgehog (SHH) subgroup medulloblastoma (MB) and provide an overview of MB progression through SHH expression and signal transduction mechanisms into the complex tumor microenvironment. In addition, we highlight the associations between tumor and stromal cells as possible prognostic markers that could be targeted with new therapeutic strategies.
Collapse
|
3
|
Pringle AK, Solomon E, Coles BJ, Desousa BR, Shtaya A, Gajavelli S, Dabab N, Zaben MJ, Bulters DO, Bullock MR, Ahmed AI. Sonic Hedgehog Signaling Promotes Peri-Lesion Cell Proliferation and Functional Improvement after Cortical Contusion Injury. Neurotrauma Rep 2021; 2:27-38. [PMID: 33748811 PMCID: PMC7962778 DOI: 10.1089/neur.2020.0016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Traumatic brain injury (TBI) is a leading cause of death and disability globally. No drug treatments are available, so interest has turned to endogenous neural stem cells (NSCs) as alternative strategies for treatment. We hypothesized that regulation of cell proliferation through modulation of the sonic hedgehog pathway, a key NSC regulatory pathway, could lead to functional improvement. We assessed sonic hedgehog (Shh) protein levels in the cerebrospinal fluid (CSF) of patients with TBI. Using the cortical contusion injury (CCI) model in rodents, we used pharmacological modulators of Shh signaling to assess cell proliferation within the injured cortex using the marker 5-Ethynyl-2’-deoxyuridine (EdU); 50mg/mL. The phenotype of proliferating cells was determined and quantified. Motor function was assessed using the rotarod test. In patients with TBI there is a reduction of Shh protein in CSF compared with control patients. In rodents, following a severe CCI, quiescent cells become activated. Pharmacologically modulating the Shh signaling pathway leads to changes in the number of newly proliferating injury-induced cells. Upregulation of Shh signaling with Smoothened agonist (SAG) results in an increase of newly proliferating cells expressing glial fibrillary acidic protein (GFAP), whereas the Shh signaling inhibitor cyclopamine leads to a reduction. Some cells expressed doublecortin (DCX) but did not mature into neurons. The SAG-induced increase in proliferation is associated with improved recovery of motor function. Localized restoration of Shh in the injured rodent brain, via increased Shh signaling, has the potential to sustain endogenous cell proliferation and the mitigation of TBI-induced motor deficits albeit without the neuronal differentiation.
Collapse
Affiliation(s)
- Ashley K Pringle
- Clinical Neurosciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Elshadaie Solomon
- Clinical Neurosciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Benjamin J Coles
- Clinical Neurosciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Brandon R Desousa
- Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Anan Shtaya
- Neurosciences Research Centre, St. George's, University of London, London, United Kingdom
| | - Shyam Gajavelli
- Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Nedal Dabab
- Clinical Neurosciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Malik J Zaben
- Neuroscience and Mental Health Research Institute, University of Cardiff, Cardiff, Wales, United Kingdom
| | - Diederik O Bulters
- Wessex Neurological Centre, University Hospitals Southampton NHS Trust, Southampton, United Kingdom
| | - M Ross Bullock
- Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Aminul I Ahmed
- Clinical Neurosciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.,Brain Repair and Rehabilitation, Institute of Neurology, London, United Kingdom
| |
Collapse
|
4
|
Song D, Chen Y, Chen C, Chen L, Cheng O. GABA B receptor antagonist promotes hippocampal neurogenesis and facilitates cognitive function recovery following acute cerebral ischemia in mice. Stem Cell Res Ther 2021; 12:22. [PMID: 33413637 PMCID: PMC7792056 DOI: 10.1186/s13287-020-02059-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/27/2020] [Indexed: 02/02/2023] Open
Abstract
PURPOSE AND BACKGROUND Previous studies have suggested that promoting endogenous neurogenesis has great significance for the recovery of cognitive dysfunction caused by cerebral ischemia (CI). Pharmacological inhibition of GABAB receptor can enhance neurogenesis in adult healthy and depressed mice. In the study, we intended to investigate the effects of GABAB receptor antagonists on cognitive function and hippocampal neurogenesis in mice following CI. METHODS Adult mice were subjected to bilateral common carotid artery occlusion (BCCAO) for 20 min to induce CI and treated with CGP52432 (antagonist of GABAB receptor, CGP, 10 mg/kg intraperitoneal injection) starting 24 h after CI. The Morris water maze test was performed to test spatial learning and memory at day 28. Immunofluorescence was applied to detect neurogenesis in the DG region at day 14 and 28. In in vitro experiments, cell proliferation was detected by CCK8 and immunofluorescence, and the expression of cAMP/CREB signaling pathway-related proteins was detected by ELISA assay and Western blot. RESULTS CGP significantly improved spatial learning and memory disorders caused by CI, and it enhanced the proliferation of neural stem cells (NSCs), the number of immature neurons, and the differentiation from newborn cells to neurons. In vitro experiments further confirmed that CGP dose-dependently enhanced the cell viability of NSCs, and immunofluorescence staining showed that CGP promoted the proliferation of NSCs. In addition, treatment with CGP increased the expression of cAMP, PKA, and pCREB in cultured NSCs. CONCLUSION Inhibition of GABAB receptor can effectively promote hippocampal neurogenesis and improve spatial learning and memory in adult mice following CI.
Collapse
Affiliation(s)
- Dan Song
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yaohua Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Cheng Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Lili Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Oumei Cheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| |
Collapse
|
5
|
Gardner JC, Dvoretskiy SV, Yang Y, Venkataraman S, Lange DA, Li S, Boppart AL, Kim N, Rendeiro C, Boppart MD, Rhodes JS. Electrically stimulated hind limb muscle contractions increase adult hippocampal astrogliogenesis but not neurogenesis or behavioral performance in male C57BL/6J mice. Sci Rep 2020; 10:19319. [PMID: 33168868 PMCID: PMC7652861 DOI: 10.1038/s41598-020-76356-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022] Open
Abstract
Regular exercise is crucial for maintaining cognitive health throughout life. Recent evidence suggests muscle contractions during exercise release factors into the blood which cross into the brain and stimulate adult hippocampal neurogenesis. However, no study has tested whether muscle contractions alone are sufficient to increase adult hippocampal neurogenesis and improve behavioral performance. Adult male, C57BL/6J mice were anesthetized and exposed to bilateral hind limb muscle contractions (both concentric and eccentric) via electrical stimulation (e-stim) of the sciatic nerve twice a week for 8 weeks. Each session lasted approximately 20 min and consisted of a total of 40 muscle contractions. The control group was treated similarly except without e-stim (sham). Acute neuronal activation of the dentate gyrus (DG) using cFos immunohistochemistry was measured as a negative control to confirm that the muscle contractions did not activate the hippocampus, and in agreement, no DG activation was observed. Relative to sham, e-stim training increased DG volume by approximately 10% and astrogliogenesis by 75%, but no difference in neurogenesis was detected and no improvement in behavioral performance was observed. E-stim also increased astrogliogenesis in CA1/CA2 hippocampal subfields but not in the cortex. Results demonstrate that muscle contractions alone, in absence of DG activation, are sufficient to increase adult hippocampal astrogliogenesis, but not neurogenesis or behavioral performance in mice.
Collapse
Affiliation(s)
- Jennie C Gardner
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Svyatoslav V Dvoretskiy
- Department of Kinesiology and Community Health, University of Illinois at Urbana Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Yanyu Yang
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Sanjana Venkataraman
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Dominica A Lange
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Shiping Li
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Alexandria L Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Noah Kim
- Department of Kinesiology and Community Health, University of Illinois at Urbana Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Catarina Rendeiro
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA.,School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Marni D Boppart
- Department of Kinesiology and Community Health, University of Illinois at Urbana Champaign, Champaign, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA
| | - Justin S Rhodes
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, USA. .,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL, 61801, USA.
| |
Collapse
|
6
|
Marchetti B. Nrf2/Wnt resilience orchestrates rejuvenation of glia-neuron dialogue in Parkinson's disease. Redox Biol 2020; 36:101664. [PMID: 32863224 PMCID: PMC7395594 DOI: 10.1016/j.redox.2020.101664] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/15/2020] [Accepted: 07/27/2020] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress and inflammation have long been recognized to contribute to Parkinson's disease (PD), a common movement disorder characterized by the selective loss of midbrain dopaminergic neurons (mDAn) of the substantia nigra pars compacta (SNpc). The causes and mechanisms still remain elusive, but a complex interplay between several genes and a number of interconnected environmental factors, are chiefly involved in mDAn demise, as they intersect the key cellular functions affected in PD, such as the inflammatory response, mitochondrial, lysosomal, proteosomal and autophagic functions. Nuclear factor erythroid 2 -like 2 (NFE2L2/Nrf2), the master regulator of cellular defense against oxidative stress and inflammation, and Wingless (Wnt)/β-catenin signaling cascade, a vital pathway for mDAn neurogenesis and neuroprotection, emerge as critical intertwinned actors in mDAn physiopathology, as a decline of an Nrf2/Wnt/β-catenin prosurvival axis with age underlying PD mutations and a variety of noxious environmental exposures drive PD neurodegeneration. Unexpectedly, astrocytes, the so-called "star-shaped" cells, harbouring an arsenal of "beneficial" and "harmful" molecules represent the turning point in the physiopathological and therapeutical scenario of PD. Fascinatingly, "astrocyte's fil rouge" brings back to Nrf2/Wnt resilience, as boosting the Nrf2/Wnt resilience program rejuvenates astrocytes, in turn (i) mitigating nigrostriatal degeneration of aged mice, (ii) reactivating neural stem progenitor cell proliferation and neuron differentiation in the brain and (iii) promoting a beneficial immunomodulation via bidirectional communication with mDAns. Then, through resilience of Nrf2/Wnt/β-catenin anti-ageing, prosurvival and proregenerative molecular programs, it seems possible to boost the inherent endogenous self-repair mechanisms. Here, the cellular and molecular aspects as well as the therapeutical options for rejuvenating glia-neuron dialogue will be discussed together with major glial-derived mechanisms and therapies that will be fundamental to the identification of novel diagnostic tools and treatments for neurodegenerative diseases (NDs), to fight ageing and nigrostriatal DAergic degeneration and promote functional recovery.
Collapse
Affiliation(s)
- Bianca Marchetti
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), Pharmacology Section, Medical School, University of Catania, Via S. Sofia 65, 95125, Catania, Italy; Oasi Research Institute-IRCCS, Neuropharmacology Section, Via Conte Ruggero 73, 94018, Troina, EN, Italy.
| |
Collapse
|
7
|
Marchetti B, Leggio L, L’Episcopo F, Vivarelli S, Tirolo C, Paternò G, Giachino C, Caniglia S, Serapide MF, Iraci N. Glia-Derived Extracellular Vesicles in Parkinson's Disease. J Clin Med 2020; 9:jcm9061941. [PMID: 32575923 PMCID: PMC7356371 DOI: 10.3390/jcm9061941] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/12/2020] [Accepted: 06/17/2020] [Indexed: 12/15/2022] Open
Abstract
Glial cells are fundamental players in the central nervous system (CNS) development and homeostasis, both in health and disease states. In Parkinson’s disease (PD), a dysfunctional glia-neuron crosstalk represents a common final pathway contributing to the chronic and progressive death of dopaminergic (DAergic) neurons of the substantia nigra pars compacta (SNpc). Notably, glial cells communicating with each other by an array of molecules, can acquire a “beneficial” or “destructive” phenotype, thereby enhancing neuronal death/vulnerability and/or exerting critical neuroprotective and neuroreparative functions, with mechanisms that are actively investigated. An important way of delivering messenger molecules within this glia-neuron cross-talk consists in the secretion of extracellular vesicles (EVs). EVs are nano-sized membranous particles able to convey a wide range of molecular cargoes in a controlled way, depending on the specific donor cell and the microenvironmental milieu. Given the dual role of glia in PD, glia-derived EVs may deliver molecules carrying various messages for the vulnerable/dysfunctional DAergic neurons. Here, we summarize the state-of-the-art of glial-neuron interactions and glia-derived EVs in PD. Also, EVs have the ability to cross the blood brain barrier (BBB), thus acting both within the CNS and outside, in the periphery. In these regards, this review discloses the emerging applications of EVs, with a special focus on glia-derived EVs as potential carriers of new biomarkers and nanotherapeutics for PD.
Collapse
Affiliation(s)
- Bianca Marchetti
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, Torre Biologica, Via S. Sofia 97, 95125 Catania, Italy; (L.L.); (S.V.); (G.P.); (M.F.S.)
- Neuropharmacology Section, OASI Research Institute-IRCCS, 94018 Troina, Italy; (F.L.); (C.T.); (C.G.); (S.C.)
- Correspondence: (B.M.); (N.I.)
| | - Loredana Leggio
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, Torre Biologica, Via S. Sofia 97, 95125 Catania, Italy; (L.L.); (S.V.); (G.P.); (M.F.S.)
| | - Francesca L’Episcopo
- Neuropharmacology Section, OASI Research Institute-IRCCS, 94018 Troina, Italy; (F.L.); (C.T.); (C.G.); (S.C.)
| | - Silvia Vivarelli
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, Torre Biologica, Via S. Sofia 97, 95125 Catania, Italy; (L.L.); (S.V.); (G.P.); (M.F.S.)
| | - Cataldo Tirolo
- Neuropharmacology Section, OASI Research Institute-IRCCS, 94018 Troina, Italy; (F.L.); (C.T.); (C.G.); (S.C.)
| | - Greta Paternò
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, Torre Biologica, Via S. Sofia 97, 95125 Catania, Italy; (L.L.); (S.V.); (G.P.); (M.F.S.)
| | - Carmela Giachino
- Neuropharmacology Section, OASI Research Institute-IRCCS, 94018 Troina, Italy; (F.L.); (C.T.); (C.G.); (S.C.)
| | - Salvatore Caniglia
- Neuropharmacology Section, OASI Research Institute-IRCCS, 94018 Troina, Italy; (F.L.); (C.T.); (C.G.); (S.C.)
| | - Maria Francesca Serapide
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, Torre Biologica, Via S. Sofia 97, 95125 Catania, Italy; (L.L.); (S.V.); (G.P.); (M.F.S.)
| | - Nunzio Iraci
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, Torre Biologica, Via S. Sofia 97, 95125 Catania, Italy; (L.L.); (S.V.); (G.P.); (M.F.S.)
- Correspondence: (B.M.); (N.I.)
| |
Collapse
|
8
|
Sonic Hedgehog and Triiodothyronine Pathway Interact in Mouse Embryonic Neural Stem Cells. Int J Mol Sci 2020; 21:ijms21103672. [PMID: 32456161 PMCID: PMC7279276 DOI: 10.3390/ijms21103672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/13/2020] [Accepted: 05/19/2020] [Indexed: 11/17/2022] Open
Abstract
Neural stem cells are fundamental to development of the central nervous system (CNS)-as well as its plasticity and regeneration-and represent a potential tool for neuro transplantation therapy and research. This study is focused on examination of the proliferation dynamic and fate of embryonic neural stem cells (eNSCs) under differentiating conditions. In this work, we analyzed eNSCs differentiating alone and in the presence of sonic hedgehog (SHH) or triiodothyronine (T3) which play an important role in the development of the CNS. We found that inhibition of the SHH pathway and activation of the T3 pathway increased cellular health and survival of differentiating eNSCs. In addition, T3 was able to increase the expression of the gene for the receptor smoothened (Smo), which is part of the SHH signaling cascade, while SHH increased the expression of the T3 receptor beta gene (Thrb). This might be the reason why the combination of SHH and T3 increased the expression of the thyroxine 5-deiodinase type III gene (Dio3), which inhibits T3 activity, which in turn affects cellular health and proliferation activity of eNSCs.
Collapse
|
9
|
Serapide MF, L'Episcopo F, Tirolo C, Testa N, Caniglia S, Giachino C, Marchetti B. Boosting Antioxidant Self-defenses by Grafting Astrocytes Rejuvenates the Aged Microenvironment and Mitigates Nigrostriatal Toxicity in Parkinsonian Brain via an Nrf2-Driven Wnt/β-Catenin Prosurvival Axis. Front Aging Neurosci 2020; 12:24. [PMID: 32226376 PMCID: PMC7081734 DOI: 10.3389/fnagi.2020.00024] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 01/22/2020] [Indexed: 12/19/2022] Open
Abstract
Astrocyte (As) bidirectional dialog with neurons plays a fundamental role in major homeostatic brain functions, particularly providing metabolic support and antioxidant self-defense against reactive oxygen (ROS) and nitrogen species (RNS) via the activation of NF-E2-related factor 2 (Nrf2), a master regulator of oxidative stress. Disruption of As-neuron crosstalk is chiefly involved in neuronal degeneration observed in Parkinson's disease (PD), the most common movement disorder characterized by the selective degeneration of dopaminergic (DAergic) cell bodies of the substantia nigra (SN) pars compacta (SNpc). Ventral midbrain (VM)-As are recognized to exert an important role in DAergic neuroprotection via the expression of a variety of factors, including wingless-related MMTV integration site 1 (Wnt1), a principal player in DAergic neurogenesis. However, whether As, by themselves, might fulfill the role of chief players in DAergic neurorestoration of aged PD mice is presently unresolved. Here, we used primary postnatal mouse VM-As as a graft source for unilateral transplantation above the SN of aged 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mice after the onset of motor symptoms. Spatio-temporal analyses documented that the engrafted cells promoted: (i) a time-dependent nigrostriatal rescue along with increased high-affinity synaptosomal DA uptake and counteraction of motor deficit, as compared to mock-grafted counterparts; and (ii) a restoration of the impaired microenvironment via upregulation of As antioxidant self-defense through the activation of Nrf2/Wnt/β-catenin signaling, suggesting that grafting As has the potential to switch the SN neurorescue-unfriendly environment to a beneficial antioxidant/anti-inflammatory prosurvival milieu. These findings highlight As-derived factors/mechanisms as the crucial key for successful therapeutic outcomes in PD.
Collapse
Affiliation(s)
- Maria Francesca Serapide
- Pharmacology Section, Department of Biomedical and Biotechnological Sciences, Medical School, University of Catania, Catania, Italy
| | | | - Cataldo Tirolo
- Section of Neuropharmacology, OASI Research Institute-IRCCS, Troina, Italy
| | - Nunzio Testa
- Section of Neuropharmacology, OASI Research Institute-IRCCS, Troina, Italy
| | - Salvatore Caniglia
- Section of Neuropharmacology, OASI Research Institute-IRCCS, Troina, Italy
| | - Carmela Giachino
- Section of Neuropharmacology, OASI Research Institute-IRCCS, Troina, Italy
| | - Bianca Marchetti
- Pharmacology Section, Department of Biomedical and Biotechnological Sciences, Medical School, University of Catania, Catania, Italy.,Section of Neuropharmacology, OASI Research Institute-IRCCS, Troina, Italy
| |
Collapse
|
10
|
Marchetti B, Tirolo C, L'Episcopo F, Caniglia S, Testa N, Smith JA, Pluchino S, Serapide MF. Parkinson's disease, aging and adult neurogenesis: Wnt/β-catenin signalling as the key to unlock the mystery of endogenous brain repair. Aging Cell 2020; 19:e13101. [PMID: 32050297 PMCID: PMC7059166 DOI: 10.1111/acel.13101] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 11/27/2019] [Accepted: 12/25/2019] [Indexed: 12/14/2022] Open
Abstract
A common hallmark of age-dependent neurodegenerative diseases is an impairment of adult neurogenesis. Wingless-type mouse mammary tumor virus integration site (Wnt)/β-catenin (WβC) signalling is a vital pathway for dopaminergic (DAergic) neurogenesis and an essential signalling system during embryonic development and aging, the most critical risk factor for Parkinson's disease (PD). To date, there is no known cause or cure for PD. Here we focus on the potential to reawaken the impaired neurogenic niches to rejuvenate and repair the aged PD brain. Specifically, we highlight WβC-signalling in the plasticity of the subventricular zone (SVZ), the largest germinal region in the mature brain innervated by nigrostriatal DAergic terminals, and the mesencephalic aqueduct-periventricular region (Aq-PVR) Wnt-sensitive niche, which is in proximity to the SNpc and harbors neural stem progenitor cells (NSCs) with DAergic potential. The hallmark of the WβC pathway is the cytosolic accumulation of β-catenin, which enters the nucleus and associates with T cell factor/lymphoid enhancer binding factor (TCF/LEF) transcription factors, leading to the transcription of Wnt target genes. Here, we underscore the dynamic interplay between DAergic innervation and astroglial-derived factors regulating WβC-dependent transcription of key genes orchestrating NSC proliferation, survival, migration and differentiation. Aging, inflammation and oxidative stress synergize with neurotoxin exposure in "turning off" the WβC neurogenic switch via down-regulation of the nuclear factor erythroid-2-related factor 2/Wnt-regulated signalosome, a key player in the maintenance of antioxidant self-defense mechanisms and NSC homeostasis. Harnessing WβC-signalling in the aged PD brain can thus restore neurogenesis, rejuvenate the microenvironment, and promote neurorescue and regeneration.
Collapse
Affiliation(s)
- Bianca Marchetti
- Department of Biomedical and Biotechnological Sciences (BIOMETEC)Pharmacology and Physiology SectionsMedical SchoolUniversity of CataniaCataniaItaly
- Neuropharmacology SectionOASI Research Institute‐IRCCSTroinaItaly
| | - Cataldo Tirolo
- Neuropharmacology SectionOASI Research Institute‐IRCCSTroinaItaly
| | | | | | - Nunzio Testa
- Neuropharmacology SectionOASI Research Institute‐IRCCSTroinaItaly
| | - Jayden A. Smith
- Department of Clinical Neurosciences and NIHR Biomedical Research CentreUniversity of CambridgeCambridgeUK
| | - Stefano Pluchino
- Department of Clinical Neurosciences and NIHR Biomedical Research CentreUniversity of CambridgeCambridgeUK
| | - Maria F. Serapide
- Department of Biomedical and Biotechnological Sciences (BIOMETEC)Pharmacology and Physiology SectionsMedical SchoolUniversity of CataniaCataniaItaly
| |
Collapse
|
11
|
Bekiari C, Grivas I, Tsingotjidou A, Papadopoulos GC. Adult neurogenesis and gliogenesis in the dorsal and ventral canine hippocampus. J Comp Neurol 2019; 528:1216-1230. [PMID: 31743444 DOI: 10.1002/cne.24818] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 11/08/2019] [Accepted: 11/08/2019] [Indexed: 12/13/2022]
Abstract
Dentate gyrus (DG) of the mammalian hippocampus gives rise to new neurons and astrocytes all through adulthood. Canine hippocampus presents many similarities in fetal development, anatomy, and physiology with human hippocampus, establishing canines as excellent animal models for the study of adult neurogenesis. In the present study, BrdU-dated cells of the structurally and functionally dissociated dorsal (dDG) and ventral (vDG) adult canine DG were comparatively examined over a period of 30 days. Each part's neurogenic potential, radial glia-like neural stem cells (NSCs) proliferation and differentiation, migration, and maturation of their progenies were evaluated at 2, 5, 14, and 30 days post BrdU administration, with the use of selected markers (glial fibrillary acidic protein, doublecortin, calretinin and calbindin). Co-staining of BrdU+ cells with NeuN or S100B permitted the parallel study of the ongoing neurogenesis and gliogenesis. Our findings reveal the comparatively higher populations of residing granule cells, proliferating NSCs and BrdU+ neurons in the dDG, whereas newborn neurons of the vDG showed a prolonged differentiation, migration, and maturation. Newborn astrocytes were found all along the dorso-ventral axis, counting however for only 11% of newborn cell population. Comparative evaluation of adult canine and rat neurogenesis revealed significant differences in the distribution of resident and newborn granule cells along the dorso-ventral axis, division pattern of adult NSCs, maturation time plan of newborn neurons, and ongoing gliogenesis. Concluding, spatial and temporal features of adult canine neurogenesis are similar to that of other gyrencephalic species, including humans, and justify the comparative examination of adult neurogenesis across mammalian species.
Collapse
Affiliation(s)
- Chryssa Bekiari
- Laboratory of Anatomy, Histology & Embryology, Faculty of Veterinary Medicine, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Grivas
- Laboratory of Anatomy, Histology & Embryology, Faculty of Veterinary Medicine, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasia Tsingotjidou
- Laboratory of Anatomy, Histology & Embryology, Faculty of Veterinary Medicine, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios C Papadopoulos
- Laboratory of Anatomy, Histology & Embryology, Faculty of Veterinary Medicine, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| |
Collapse
|
12
|
Cheng X, Yeung PKK, Zhong K, Zilundu PLM, Zhou L, Chung SK. Astrocytic endothelin-1 overexpression promotes neural progenitor cells proliferation and differentiation into astrocytes via the Jak2/Stat3 pathway after stroke. J Neuroinflammation 2019; 16:227. [PMID: 31733648 PMCID: PMC6858703 DOI: 10.1186/s12974-019-1597-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 09/23/2019] [Indexed: 12/17/2022] Open
Abstract
Background Endothelin-1 (ET-1) is synthesized and upregulated in astrocytes under stroke. We previously demonstrated that transgenic mice over-expressing astrocytic ET-1 (GET-1) displayed more severe neurological deficits characterized by a larger infarct after transient middle cerebral artery occlusion (tMCAO). ET-1 is a known vasoconstrictor, mitogenic, and a survival factor. However, it is unclear whether the observed severe brain damage in GET-1 mice post stroke is due to ET-1 dysregulation of neurogenesis by altering the stem cell niche. Methods Non-transgenic (Ntg) and GET-1 mice were subjected to tMCAO with 1 h occlusion followed by long-term reperfusion (from day 1 to day 28). Neurological function was assessed using a four-point scale method. Infarct area and volume were determined by 2,3,5-triphenyltetra-zolium chloride staining. Neural stem cell (NSC) proliferation and migration in subventricular zone (SVZ) were evaluated by immunofluorescence double labeling of bromodeoxyuridine (BrdU), Ki67 and Sox2, Nestin, and Doublecortin (DCX). NSC differentiation in SVZ was evaluated using the following immunofluorescence double immunostaining: BrdU and neuron-specific nuclear protein (NeuN), BrdU and glial fibrillary acidic protein (GFAP). Phospho-Stat3 (p-Stat3) expression detected by Western-blot and immunofluorescence staining. Results GET-1 mice displayed a more severe neurological deficit and larger infarct area after tMCAO injury. There was a significant increase of BrdU-labeled progenitor cell proliferation, which co-expressed with GFAP, at SVZ in the ipsilateral side of the GET-1 brain at 28 days after tMCAO. p-Stat3 expression was increased in both Ntg and GET-1 mice in the ischemia brain at 7 days after tMCAO. p-Stat3 expression was significantly upregulated in the ipsilateral side in the GET-1 brain than that in the Ntg brain at 7 days after tMCAO. Furthermore, GET-1 mice treated with AG490 (a JAK2/Stat3 inhibitor) sh owed a significant reduction in neurological deficit along with reduced infarct area and dwarfed astrocytic differentiation in the ipsilateral brain after tMCAO. Conclusions The data indicate that astrocytic endothelin-1 overexpression promotes progenitor stem cell proliferation and astr ocytic differentiation via the Jak2/Stat3 pathway.
Collapse
Affiliation(s)
- Xiao Cheng
- Department of Neurology, Guangdong Provincial Hospital of Traditional Chinese Medicine, 111 Dade Road, Guangzhou, 510120, China. .,School of Biomedical Sciences, The University of Hong Kong, HKSAR, China. .,The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou, 510405, China. .,Guangdong Provincial Chinese Emergency Key Laboratory, Guangzhou, 510120, China. .,State Key Laboratory of Dampness Syndrome of Traditional Chinese Medicine, Guangzhou, 510120, China.
| | - Patrick K K Yeung
- School of Biomedical Sciences, The University of Hong Kong, HKSAR, China
| | - Ke Zhong
- Department of Anatomy, Zhong Shan School of Medicine, Sun Yat-Sen University, Guangdong Province, Guangzhou, China
| | - Prince L M Zilundu
- Department of Anatomy, Zhong Shan School of Medicine, Sun Yat-Sen University, Guangdong Province, Guangzhou, China
| | - Lihua Zhou
- Department of Anatomy, Zhong Shan School of Medicine, Sun Yat-Sen University, Guangdong Province, Guangzhou, China
| | - Sookja K Chung
- Faculty of Medicine, Macau University of Science and Technology, Macau, China. .,School of Biomedical Sciences, The University of Hong Kong, HKSAR, China.
| |
Collapse
|
13
|
Adult Neurogenesis in the Subventricular Zone and Its Regulation After Ischemic Stroke: Implications for Therapeutic Approaches. Transl Stroke Res 2019; 11:60-79. [DOI: 10.1007/s12975-019-00717-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 06/13/2019] [Accepted: 06/27/2019] [Indexed: 12/21/2022]
|
14
|
Rafaiee R, Ahmadiankia N. Bone Marrow Derived Mesenchymal Stem Cells in Addiction Related Hippocampal Damages. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2018; 7:69-79. [PMID: 30276162 PMCID: PMC6148505 DOI: 10.22088/ijmcm.bums.7.2.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 06/13/2018] [Indexed: 11/30/2022]
Abstract
The brain is an important organ that controls all sensory and motor actions, memory, and emotions. Each anatomical and physiological modulation in various brain centers, results in psychological, behavioral, and sensory-motor changes. Alcohol and addictive drugs such as opioids and amphetamines have been shown to exert a great impact on brain, specifically on the hippocampus. Emerging evidence has indicated that altered hippocampal neurogenesis is associated with the pathophysiology of neuropsychological disorders including addiction. The addictive drugs impair neurogenesis and undermine the function of neural stem/progenitor cells in hippocampus. This feature was claimed to be one of the underlying mechanisms of behavioral changes in patients with addiction. As the impairment of stem cells’ function has been proven to be the underlying cause of pathologic neuroadaptations in the brain, the administration of stem cell populations has shown promising results for re-modulating of neuronal status in the brain and especially in the hippocampus. Among the different types of stem cells, bone marrow derived mesenchymal stem cells are the most proper candidates for stem cell therapies. In this review article, the recent studies on the effects of addictive drugs on brain neurogenesis, and also the promising potential effects of stem cells in curing addiction related hippocampal damages are discussed.
Collapse
Affiliation(s)
- Raheleh Rafaiee
- Addiction Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
| | | |
Collapse
|
15
|
Ueda Y, Shimizu Y, Shimizu N, Ishitani T, Ohshima T. Involvement of sonic hedgehog and notch signaling in regenerative neurogenesis in adult zebrafish optic tectum after stab injury. J Comp Neurol 2018; 526:2360-2372. [PMID: 30014463 DOI: 10.1002/cne.24489] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 05/07/2018] [Accepted: 06/05/2018] [Indexed: 01/11/2023]
Abstract
Unlike humans and other mammals, adult zebrafish have the superior capability to recover from central nervous system (CNS) injury. We previously found that proliferation of radial glia (RG) is induced in response to stab injury in optic tectum and that new neurons are generated from RG after stab injury. However, molecular mechanisms which regulate proliferation and differentiation of RG are not well known. In the present study, we investigated Shh and Notch signaling as potential mechanisms regulating regeneration in the optic tectum of adult zebrafish. We used Shh reporter fish and confirmed that canonical Shh signaling is activated specifically in RG after stab injury. Moreover, we have shown that Shh signaling promotes RG proliferation and suppresses their differentiation into neurons after stab injury. In contrast, Notch signaling was down-regulated after stab injury, indicated by the decrease in the expression level of her4 and her6, a target gene of Notch signaling. We also found that inhibition of Notch signaling after stab injury induced more proliferative RG, but that inhibition of Notch signaling inhibited generation of newborn neurons from RG after stab injury. These results suggest that high level of Notch signaling keeps RG quiescent and that appropriate level of Notch signaling is required for generation of newborn neurons from RG. Under physiological condition, activation of Shh signaling or inhibition of Notch signaling also induced RG proliferation. In adult optic tectum of zebrafish, canonical Shh signaling and Notch signaling play important roles in proliferation and differentiation of RG in physiological and regenerative conditions.
Collapse
Affiliation(s)
- Yuto Ueda
- Department of Life Science and Medical Bio-Science, Waseda University, Tokyo, Japan
| | - Yuki Shimizu
- Department of Life Science and Medical Bio-Science, Waseda University, Tokyo, Japan
| | - Nobuyuki Shimizu
- Division of Cell Regulation Systems, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Tohru Ishitani
- Division of Cell Regulation Systems, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.,Lab of Integrated Signaling Systems, Department of Molecular Medicine, Institute for Molecular & Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - Toshio Ohshima
- Department of Life Science and Medical Bio-Science, Waseda University, Tokyo, Japan
| |
Collapse
|
16
|
de Gois da Silva ML, da Silva Oliveira GL, de Oliveira Bezerra D, da Rocha Neto HJ, Feitosa MLT, Argôlo Neto NM, Rizzo MDS, de Carvalho MAM. Neurochemical properties of neurospheres infusion in experimental-induced seizures. Tissue Cell 2018; 54:47-54. [PMID: 30309509 DOI: 10.1016/j.tice.2018.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/03/2018] [Accepted: 08/06/2018] [Indexed: 02/07/2023]
Abstract
Cell replacement through neural stem cells has been a promising alternative therapy for neurodegenerative diseases. It was evaluated the possible protect and/or prevent role of neurospheres in experimental models of epilepsy by the use of biomarkers of oxidative stress and histopathological analysis. After 1 h of the epileptic inductions by pilocarpine, pentylenotetrazole and picrotoxin, rats were infused with a suspension of 2 × 106 cells/0.25 mL, marked with Qtracker® 655, via caudal vein. In the control group epilepsy was not induced, but received the cell infusion under the same conditions of other groups. After 30 days, the rats were euthanized, and the removal of the brain was proceeded to later perform the assays oxidative stress and histopathology analysis. Thiobarbituric acid and nitrite levels were elevated in epileptic groups treated with neurospheres, and the levels of reduced glutathione, superoxide dismutase and catalase were reduced when compared to non-treated groups. The performance of oxidative enzymes from pilocarpine group treated with neurospheres showed slight increase. Histopathological evaluation observed distribution of neurospheres throughout the brain tissue, with viable cells and in process of differentiation in the pilocarpine group, but with differentiation and regeneration compromised in epilepsy by picrotoxin and pentylenetetrazole due to a microenvironment of oxidative stress. Neural stem cell therapy has a promising potential for protection in the pilocarpine epilepsy model, suggesting that the antioxidant system of neurospheres could reduce oxidative damage generated by seizure.
Collapse
Affiliation(s)
| | - George Laylson da Silva Oliveira
- Postgraduate program in biotechnology-RENORBIO, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil; Department of Biology, Federal Institute of Mato Grosso, Guarantã do Norte - MT, Guarantã do Norte Campus, Brazil.
| | - Dayseanny de Oliveira Bezerra
- Integrated Nucleus of Morphology and Stem Cell Research, Agrarian Sciences Center, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil.
| | - Hermínio José da Rocha Neto
- Integrated Nucleus of Morphology and Stem Cell Research, Agrarian Sciences Center, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil.
| | - Matheus Levi Tajra Feitosa
- Integrated Nucleus of Morphology and Stem Cell Research, Agrarian Sciences Center, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil; State University of Maranhão, São Luis, MA, Brazil.
| | - Napoleão Martins Argôlo Neto
- Integrated Nucleus of Morphology and Stem Cell Research, Agrarian Sciences Center, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil.
| | - Marcia Dos Santos Rizzo
- Department of Morphology, Health Sciences Center, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil.
| | - Maria Acelina Martins de Carvalho
- Postgraduate program in biotechnology-RENORBIO, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil; Integrated Nucleus of Morphology and Stem Cell Research, Agrarian Sciences Center, Federal University of Piauí, Teresina, PI, Ininga Campus, Brazil.
| |
Collapse
|
17
|
Liu C, Sun R, Huang J, Zhang D, Huang D, Qi W, Wang S, Xie F, Shen Y, Shen C. The BAF45D Protein Is Preferentially Expressed in Adult Neurogenic Zones and in Neurons and May Be Required for Retinoid Acid Induced PAX6 Expression. Front Neuroanat 2017; 11:94. [PMID: 29163067 PMCID: PMC5681484 DOI: 10.3389/fnana.2017.00094] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/13/2017] [Indexed: 02/05/2023] Open
Abstract
Adult neurogenesis is important for the development of regenerative therapies for human diseases of the central nervous system (CNS) through the recruitment of adult neural stem cells (NSCs). NSCs are characterized by the capacity to generate neurons, astrocytes, and oligodendrocytes. To identify key factors involved in manipulating the adult NSC neurogenic fate thus has crucial implications for the clinical application. Here, we report that BAF45D is expressed in the subgranular zone (SGZ) of the dentate gyrus, the subventricular zone (SVZ) of the lateral ventricle, and the central canal (CC) of the adult spinal cord. Coexpression of BAF45D with glial fibrillary acidic protein (GFAP), a radial glial like cell marker protein, was identified in the SGZ, the SVZ and the adult spinal cord CC. Quantitative analysis data indicate that BAF45D is preferentially expressed in the neurogenic zone of the LV and the neurons of the adult CNS. Furthermore, during the neuroectoderm differentiation of H9 cells, BAF45D is required for the expression of PAX6, a neuroectoderm determinant that is also known to regulate the self-renewal and neuronal fate specification of adult neural stem/progenitor cells. Together, our results may shed new light on the expression of BAF45D in the adult neurogenic zones and the contribution of BAF45D to early neural development.
Collapse
Affiliation(s)
- Chao Liu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Department of Histology and Embryology, Anhui Medical University, Hefei, China.,Institute of Stem Cell and Tissue Engineering, Anhui Medical University, Hefei, China
| | - Ruyu Sun
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Department of Histology and Embryology, Anhui Medical University, Hefei, China.,Institute of Stem Cell and Tissue Engineering, Anhui Medical University, Hefei, China
| | - Jian Huang
- Department of Spine Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Dijuan Zhang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Department of Histology and Embryology, Anhui Medical University, Hefei, China.,Institute of Stem Cell and Tissue Engineering, Anhui Medical University, Hefei, China
| | - Dake Huang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Weiqin Qi
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Shenghua Wang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Department of Histology and Embryology, Anhui Medical University, Hefei, China.,Institute of Stem Cell and Tissue Engineering, Anhui Medical University, Hefei, China
| | - Fenfen Xie
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Department of Histology and Embryology, Anhui Medical University, Hefei, China.,Institute of Stem Cell and Tissue Engineering, Anhui Medical University, Hefei, China
| | - Yuxian Shen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Cailiang Shen
- Department of Spine Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| |
Collapse
|
18
|
Liu TT, Ye XL, Zhang JP, Yu TT, Cheng SS, Zou XC, Xu Y, Chen GQ, Yin ZY. Increased adult neurogenesis associated with reactive astrocytosis occurs prior to neuron loss in a mouse model of neurodegenerative disease. CNS Neurosci Ther 2017; 23:885-893. [PMID: 28960838 DOI: 10.1111/cns.12763] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 09/01/2017] [Accepted: 09/11/2017] [Indexed: 01/06/2023] Open
Abstract
AIMS This study was to investigate whether cell proliferation and adult neurogenesis are affected at early neurodegenerative stage when neuron loss has not begun to display. METHODS AND RESULTS Forebrain-specific nicastrin (NCT) conditional knockout (cKO) mice were generated by crossing NCTf/f with CaMKIIα-Cre Tg mice. BrdU was used as a lineage tracer to label proliferating neural progenitor cells (NPCs). Immunohistochemistry (IHC) on BrdU indicated that the total number of BrdU positive (+) cells was increased in NCT cKO mice. IHC on doublecortin (DCX) showed that the total number of DCX+ cells was also increased in NCT cKO mice. NCT cKO mice displayed significant astrogliosis as well. However, NCT cKO mice at 3 months did not show significant neuronal death or synaptic loss. CONCLUSIONS NCT-dependent γ-secretase activity plays an important role in cell proliferation and immature neuron generation. Enhanced neurogenesis and astrogliosis may be early cellular events prior to the occurrence of neuronal death in neurodegenerative disease.
Collapse
Affiliation(s)
- Ting-Ting Liu
- State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Jiangsu Provincial Key Medical Discipline, Nanjing University, Nanjing, China
| | - Xiao-Lian Ye
- Department of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Jin-Ping Zhang
- Department of Pharmacy, China Pharmaceutical University, Nanjing, China.,Department of Medicament, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| | - Ting-Ting Yu
- Department of Geriatric, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| | - Shan-Shan Cheng
- State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Jiangsu Provincial Key Medical Discipline, Nanjing University, Nanjing, China
| | - Xiao-Chuan Zou
- State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Jiangsu Provincial Key Medical Discipline, Nanjing University, Nanjing, China
| | - Yun Xu
- Department of Neurology, Jiangsu Provincial Key Medical Discipline, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| | - Gui-Quan Chen
- State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Jiangsu Provincial Key Medical Discipline, Nanjing University, Nanjing, China
| | - Zhen-Yu Yin
- Department of Geriatric, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| |
Collapse
|
19
|
Ottoboni L, Merlini A, Martino G. Neural Stem Cell Plasticity: Advantages in Therapy for the Injured Central Nervous System. Front Cell Dev Biol 2017; 5:52. [PMID: 28553634 PMCID: PMC5427132 DOI: 10.3389/fcell.2017.00052] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/25/2017] [Indexed: 12/14/2022] Open
Abstract
The physiological and pathological properties of the neural germinal stem cell niche have been well-studied in the past 30 years, mainly in animals and within given limits in humans, and knowledge is available for the cyto-architectonic structure, the cellular components, the timing of development and the energetic maintenance of the niche, as well as for the therapeutic potential and the cross talk between neural and immune cells. In recent years we have gained detailed understanding of the potentiality of neural stem cells (NSCs), although we are only beginning to understand their molecular, metabolic, and epigenetic profile in physiopathology and, further, more can be invested to measure quantitatively the activity of those cells, to model in vitro their therapeutic responses or to predict interactions in silico. Information in this direction has been put forward for other organs but is still limited in the complex and very less accessible context of the brain. A comprehensive understanding of the behavior of endogenous NSCs will help to tune or model them toward a desired response in order to treat complex neurodegenerative diseases. NSCs have the ability to modulate multiple cellular functions and exploiting their plasticity might make them into potent and versatile cellular drugs.
Collapse
Affiliation(s)
- Linda Ottoboni
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Arianna Merlini
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Gianvito Martino
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| |
Collapse
|
20
|
Luo L, Guo K, Fan W, Lu Y, Chen L, Wang Y, Shao Y, Wu G, Xu J, Lü L. Niche astrocytes promote the survival, proliferation and neuronal differentiation of co-transplanted neural stem cells following ischemic stroke in rats. Exp Ther Med 2016; 13:645-650. [PMID: 28352345 DOI: 10.3892/etm.2016.4016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 06/15/2016] [Indexed: 02/06/2023] Open
Abstract
Niche astrocytes have been reported to promote neuronal differentiation through juxtacrine signaling. However, the effects of astrocytes on neuronal differentiation following ischemic stroke are not fully understood. In the present study, transplanted astrocytes and neural stem cells (NSCs) were transplanted into the ischemic striatum of transient middle cerebral artery occlusion (MCAO) model rats 48 h following surgery. It was observed that the co-transplantation of astrocytes and NSCs resulted in a higher ratio of survival and proliferation of the transplanted NSCs, and neuronal differentiation, in MCAO rats compared with NSC transplantation alone. These results demonstrate that the co-administration of astrocytes promotes the survival and neuronal differentiation of NSCs in the ischemic brain. These results suggest that the co-transplantation of astrocytes and NSCs is more effective than NSCs alone in the production of neurons following ischemic stroke in rats.
Collapse
Affiliation(s)
- Li Luo
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology and Institute of Stomatological Research, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, P.R. China; Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China; Department of Anatomy, School of Basic Medicine, Guangdong Pharmaceutical University, Guangzhou, Guangdong 510006, P.R. China
| | - Kaihua Guo
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Wenguo Fan
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology and Institute of Stomatological Research, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, P.R. China
| | - Yinghong Lu
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Lizhi Chen
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Yang Wang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Yijia Shao
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Gongxiong Wu
- Research Division, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Jie Xu
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Lanhai Lü
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology and Institute of Stomatological Research, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, P.R. China
| |
Collapse
|
21
|
Induction of Perivascular Neural Stem Cells and Possible Contribution to Neurogenesis Following Transient Brain Ischemia/Reperfusion Injury. Transl Stroke Res 2016; 8:131-143. [PMID: 27352866 DOI: 10.1007/s12975-016-0479-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/12/2016] [Accepted: 06/17/2016] [Indexed: 12/16/2022]
Abstract
Recent therapeutic advances have increased the likelihood of recanalizing the obstructed brain arteries in patients with stroke. Therefore, it is important to understand the fate of neural cells under transient ischemia/reperfusion injury. Accumulating evidence shows that neurogenesis occurs in perivascular regions following brain injury, although the precise mechanism and origin of these newborn neurons under transient ischemia/reperfusion injury remain unclear. Using a mouse model of transient brain ischemia/reperfusion injury, we found that neural stem cells (NSCs) develop within injured areas. This induction of NSCs following ischemia/reperfusion injury was observed even in response to nonlethal ischemia, although massive numbers of NSCs were induced by lethal ischemia. Immunohistochemical and immunoelectron microscopic studies indicated that platelet-derived growth factor receptor beta-positive (PDGFRβ+) pericytes within injured areas following nonlethal ischemia began to express the NSC marker nestin as early as 3 days after transient ischemia/reperfusion. Some PDGFRβ+ pericytes expressed the immature neuronal marker doublecortin at day 7. These findings indicate that brain pericytes are a potential source of the perivascular NSCs that generate neuronal cells under lethal and nonlethal ischemic conditions following transient ischemia/reperfusion. Thus, brain pericytes might be a target for neurogenesis mediation in patients with nonlethal and lethal ischemia following transient ischemia/reperfusion injury.
Collapse
|
22
|
Gengatharan A, Bammann RR, Saghatelyan A. The Role of Astrocytes in the Generation, Migration, and Integration of New Neurons in the Adult Olfactory Bulb. Front Neurosci 2016; 10:149. [PMID: 27092050 PMCID: PMC4820452 DOI: 10.3389/fnins.2016.00149] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 03/21/2016] [Indexed: 01/10/2023] Open
Abstract
In mammals, new neurons in the adult olfactory bulb originate from a pool of neural stem cells in the subventricular zone of the lateral ventricles. Adult-born cells play an important role in odor information processing by adjusting the neuronal network to changing environmental conditions. Olfactory bulb neurogenesis is supported by several non-neuronal cells. In this review, we focus on the role of astroglial cells in the generation, migration, integration, and survival of new neurons in the adult forebrain. In the subventricular zone, neural stem cells with astrocytic properties display regional and temporal specificity when generating different neuronal subtypes. Non-neurogenic astrocytes contribute to the establishment and maintenance of the neurogenic niche. Neuroblast chains migrate through the rostral migratory stream ensheathed by astrocytic processes. Astrocytes play an important regulatory role in neuroblast migration and also assist in the development of a vasculature scaffold in the migratory stream that is essential for neuroblast migration in the postnatal brain. In the olfactory bulb, astrocytes help to modulate the network through a complex release of cytokines, regulate blood flow, and provide metabolic support, which may promote the integration and survival of new neurons. Astrocytes thus play a pivotal role in various processes of adult olfactory bulb neurogenesis, and it is likely that many other functions of these glial cells will emerge in the near future.
Collapse
Affiliation(s)
- Archana Gengatharan
- Cellular Neurobiology Unit, Centre de Recherche de l'Institut Universitaire en Santé Mentale de Québec Quebec, QC, Canada
| | - Rodrigo R Bammann
- Cellular Neurobiology Unit, Centre de Recherche de l'Institut Universitaire en Santé Mentale de Québec Quebec, QC, Canada
| | - Armen Saghatelyan
- Cellular Neurobiology Unit, Centre de Recherche de l'Institut Universitaire en Santé Mentale de QuébecQuebec, QC, Canada; Department of Psychiatry and Neuroscience, Université LavalQuebec, QC, Canada
| |
Collapse
|
23
|
Kim JY, Choi K, Shaker MR, Lee JH, Lee B, Lee E, Park JY, Lim MS, Park CH, Shin KS, Kim H, Geum D, Sun W. Promotion of Cortical Neurogenesis from the Neural Stem Cells in the Adult Mouse Subcallosal Zone. Stem Cells 2016; 34:888-901. [DOI: 10.1002/stem.2276] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 10/19/2015] [Accepted: 11/17/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Joo Yeon Kim
- Department of Anatomy and Division of Brain Korea 21 Plus Biomedical Science; Korea University College of Medicine; Seoul Korea
| | - Kyuhyun Choi
- Department of Biology; Department of Life and Nanopharmaceutical Sciences; Kyung Hee University; Seoul Republic of Korea
| | - Mohammed R. Shaker
- Department of Anatomy and Division of Brain Korea 21 Plus Biomedical Science; Korea University College of Medicine; Seoul Korea
| | - Ju-Hyun Lee
- Department of Anatomy and Division of Brain Korea 21 Plus Biomedical Science; Korea University College of Medicine; Seoul Korea
| | - Boram Lee
- Department of Anatomy and Division of Brain Korea 21 Plus Biomedical Science; Korea University College of Medicine; Seoul Korea
| | - Eunsoo Lee
- Department of Anatomy and Division of Brain Korea 21 Plus Biomedical Science; Korea University College of Medicine; Seoul Korea
| | - Jae-Yong Park
- School of Biosystem and Biomedical Science, College of Health Science, Korea University; Seoul Republic of Korea
| | - Mi-Sun Lim
- Graduate School of Biomedical Science and Engineering
- Hanyang Biomedical Research Institute
| | - Chang-Hwan Park
- Graduate School of Biomedical Science and Engineering
- Hanyang Biomedical Research Institute
- Department of Microbiology; College of Medicine, Hanyang University; Seoul Korea
| | - Ki Soon Shin
- Department of Biology; Department of Life and Nanopharmaceutical Sciences; Kyung Hee University; Seoul Republic of Korea
| | - Hyun Kim
- Department of Anatomy and Division of Brain Korea 21 Plus Biomedical Science; Korea University College of Medicine; Seoul Korea
| | - Dongho Geum
- Department of Biomedical Sciences; Korea University College of Medicine; Seoul Korea
| | - Woong Sun
- Department of Anatomy and Division of Brain Korea 21 Plus Biomedical Science; Korea University College of Medicine; Seoul Korea
| |
Collapse
|
24
|
|
25
|
Choe Y, Pleasure SJ, Mira H. Control of Adult Neurogenesis by Short-Range Morphogenic-Signaling Molecules. Cold Spring Harb Perspect Biol 2015; 8:a018887. [PMID: 26637286 DOI: 10.1101/cshperspect.a018887] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Adult neurogenesis is dynamically regulated by a tangled web of local signals emanating from the neural stem cell (NSC) microenvironment. Both soluble and membrane-bound niche factors have been identified as determinants of adult neurogenesis, including morphogens. Here, we review our current understanding of the role and mechanisms of short-range morphogen ligands from the Wnt, Notch, Sonic hedgehog, and bone morphogenetic protein (BMP) families in the regulation of adult neurogenesis. These morphogens are ideally suited to fine-tune stem-cell behavior, progenitor expansion, and differentiation, thereby influencing all stages of the neurogenesis process. We discuss cross talk between their signaling pathways and highlight findings of embryonic development that provide a relevant context for understanding neurogenesis in the adult brain. We also review emerging examples showing that the web of morphogens is in fact tightly linked to the regulation of neurogenesis by diverse physiologic processes.
Collapse
Affiliation(s)
- Youngshik Choe
- Department of Neurology, Programs in Neuroscience, Developmental and Stem Cell Biology, UCSF Institute for Regeneration Medicine, San Francisco, California 94158
| | - Samuel J Pleasure
- Department of Neurology, Programs in Neuroscience, Developmental and Stem Cell Biology, UCSF Institute for Regeneration Medicine, San Francisco, California 94158
| | - Helena Mira
- Chronic Disease Programme, UFIEC, Instituto de Salud Carlos III, Majadahonda, 28220 Madrid, Spain
| |
Collapse
|
26
|
Transplantation of Human Neural Stem Cells in a Parkinsonian Model Exerts Neuroprotection via Regulation of the Host Microenvironment. Int J Mol Sci 2015; 16:26473-92. [PMID: 26556344 PMCID: PMC4661825 DOI: 10.3390/ijms161125966] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 10/18/2015] [Accepted: 10/22/2015] [Indexed: 12/31/2022] Open
Abstract
Parkinson’s disease (PD) is characterized by a progressive loss of dopaminergic neurons and consequent dopamine (DA) deficit, and current treatment still remains a challenge. Although neural stem cells (NSCs) have been evaluated as appealing graft sources, mechanisms underlying the beneficial phenomena are not well understood. Here, we investigate whether human NSCs (hNSCs) transplantation could provide neuroprotection against DA depletion by recruiting endogenous cells to establish a favorable niche. Adult mice subjected to 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) were transplanted with hNSCs or vehicle into the striatum. Behavioral and histological analyses demonstrated significant neurorescue response observed in hNSCs-treated animals compared with the control mice. In transplanted animals, grafted cells survived, proliferated, and migrated within the astrocytic scaffold. Notably, more local astrocytes underwent de-differentiation, acquiring the properties of NSCs or neural precursor cells (NPCs) in mice given hNSCs. Additionally, we also detected significantly higher expression of host-derived growth factors in hNSCs-transplanted mice compared with the control animals, together with inhibition of local microglia and proinflammatory cytokines. Overall, our results indicate that hNSCs transplantation exerts neuroprotection in MPTP-insulted mice via regulating the host niche. Harnessing synergistic interaction between the grafts and host cells may help optimize cell-based therapies for PD.
Collapse
|
27
|
Nakagomi T, Nakano-Doi A, Kawamura M, Matsuyama T. Do Vascular Pericytes Contribute to Neurovasculogenesis in the Central Nervous System as Multipotent Vascular Stem Cells? Stem Cells Dev 2015; 24:1730-9. [PMID: 25900222 DOI: 10.1089/scd.2015.0039] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Increasing evidence suggests that multipotent stem cells are harbored within a vascular niche inside various organs. Although a precise phenotype of resident vascular stem cells (VSCs) that can function as multipotent stem cells remains unclear, accumulating evidence shows that multipotent VSCs are likely vascular pericytes (PCs) that localize within blood vessels. These PCs are multipotent, possessing the ability to differentiate into various cell types, including vascular lineage cells. In addition, brain PCs are unique: They are derived from neural crest and can differentiate into neural lineage cells. Because PCs in the central nervous system (CNS) can contribute to both neurogenesis and vasculogenesis, they may mediate the reparative process of neurovascular units that are constructed by neural and vascular cells. Here, we describe the activity of PCs when viewed as multipotent VSCs, primarily regarding their neurogenic and vasculogenic potential in the CNS. We also discuss similarities between PCs and other candidates for multipotent VSCs, including perivascular mesenchymal stem cells, neural crest-derived stem cells, adventitial progenitor cells, and adipose-derived stem cells.
Collapse
Affiliation(s)
- Takayuki Nakagomi
- 1 Institute for Advanced Medical Sciences, Hyogo College of Medicine , Hyogo, Japan
| | - Akiko Nakano-Doi
- 1 Institute for Advanced Medical Sciences, Hyogo College of Medicine , Hyogo, Japan
| | - Miki Kawamura
- 1 Institute for Advanced Medical Sciences, Hyogo College of Medicine , Hyogo, Japan .,2 Department of Neurology, Osaka University Graduate School of Medicine , Osaka, Japan
| | - Tomohiro Matsuyama
- 1 Institute for Advanced Medical Sciences, Hyogo College of Medicine , Hyogo, Japan
| |
Collapse
|
28
|
Embryonic neural stem cells in a 3D bioassay for trophic stimulation studies. Brain Res Bull 2015; 115:37-44. [DOI: 10.1016/j.brainresbull.2015.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/13/2015] [Accepted: 04/17/2015] [Indexed: 01/19/2023]
|
29
|
Tsintou M, Dalamagkas K, Seifalian AM. Advances in regenerative therapies for spinal cord injury: a biomaterials approach. Neural Regen Res 2015; 10:726-42. [PMID: 26109946 PMCID: PMC4468763 DOI: 10.4103/1673-5374.156966] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2015] [Indexed: 12/16/2022] Open
Abstract
Spinal cord injury results in the permanent loss of function, causing enormous personal, social and economic problems. Even though neural regeneration has been proven to be a natural mechanism, central nervous system repair mechanisms are ineffective due to the imbalance of the inhibitory and excitatory factors implicated in neuroregeneration. Therefore, there is growing research interest on discovering a novel therapeutic strategy for effective spinal cord injury repair. To this direction, cell-based delivery strategies, biomolecule delivery strategies as well as scaffold-based therapeutic strategies have been developed with a tendency to seek for the answer to a combinatorial approach of all the above. Here we review the recent advances on regenerative/neural engineering therapies for spinal cord injury, aiming at providing an insight to the most promising repair strategies, in order to facilitate future research conduction.
Collapse
Affiliation(s)
- Magdalini Tsintou
- UCL Centre for Nanotechnology & Regenerative Medicine, Division of Surgery and Interventional Science, University College of London, London, UK
| | - Kyriakos Dalamagkas
- UCL Centre for Nanotechnology & Regenerative Medicine, Division of Surgery and Interventional Science, University College of London, London, UK
| | - Alexander Marcus Seifalian
- UCL Centre for Nanotechnology & Regenerative Medicine, Division of Surgery and Interventional Science, University College of London, London, UK
- Royal Free London NHS Foundation Trust Hospital, London, UK
| |
Collapse
|
30
|
Azim K, Rivera A, Raineteau O, Butt AM. GSK3β regulates oligodendrogenesis in the dorsal microdomain of the subventricular zone via Wnt-β-catenin signaling. Glia 2014; 62:778-9. [PMID: 24677550 DOI: 10.1002/glia.22641] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 01/16/2014] [Accepted: 01/20/2014] [Indexed: 01/15/2023]
Abstract
Oligodendrocytes, the myelinating cells of the CNS, are derived postnatally from oligodendrocyte precursors (OPs) of the subventricular zone (SVZ). However, the mechanisms that regulate their generation from SVZ neural stem cells (NSC) are poorly understood. Here, we have examined the role of glycogen synthase kinase 3β (GSK3β), an effector of multiple converging signaling pathways in postnatal mice. The expression of GSK3β by rt-qPCR was most prominent in the SVZ and in the developing white matter, around the first 1–2 weeks of postnatal life, coinciding with the peak periods of OP differentiation. Intraventricular infusion of the GSK3β inhibitor ARA-014418 in mice aged postnatal day (P) 8–11 significantly increased generation of OPs in the dorsal microdomain of the SVZ, as shown by expression of cell specific markers using rt-qPCR and immunolabelling. Analysis of stage specific markers revealed that the augmentation of OPs occurred via increased specification from earlier SVZ cell types. These effects of GSK3β inhibition on the dorsal SVZ were largely attributable to stimulation of the canonical Wnt/β-catenin signaling pathway over other pathways. The results indicate GSK3β is a key endogenous factor for specifically regulating oligodendrogenesis from the dorsal SVZ microdomain under the control of Wnt-signaling.
Collapse
|
31
|
Merson TD, Bourne JA. Endogenous neurogenesis following ischaemic brain injury: insights for therapeutic strategies. Int J Biochem Cell Biol 2014; 56:4-19. [PMID: 25128862 DOI: 10.1016/j.biocel.2014.08.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 07/18/2014] [Accepted: 08/04/2014] [Indexed: 01/19/2023]
Abstract
Ischaemic stroke is among the most common yet most intractable types of central nervous system (CNS) injury in the adult human population. In the acute stages of disease, neurons in the ischaemic lesion rapidly die and other neuronal populations in the ischaemic penumbra are vulnerable to secondary injury. Multiple parallel approaches are being investigated to develop neuroprotective, reparative and regenerative strategies for the treatment of stroke. Accumulating evidence indicates that cerebral ischaemia initiates an endogenous regenerative response within the adult brain that potentiates adult neurogenesis from populations of neural stem and progenitor cells. A major research focus has been to understand the cellular and molecular mechanisms that underlie the potentiation of adult neurogenesis and to appreciate how interventions designed to modulate these processes could enhance neural regeneration in the post-ischaemic brain. In this review, we highlight recent advances over the last 5 years that help unravel the cellular and molecular mechanisms that potentiate endogenous neurogenesis following cerebral ischaemia and are dissecting the functional importance of this regenerative mechanism following brain injury. This article is part of a Directed Issue entitled: Regenerative Medicine: the challenge of translation.
Collapse
Affiliation(s)
- Tobias D Merson
- Florey Institute of Neuroscience and Mental Health, Kenneth Myer Building, 30 Royal Parade, Parkville, VIC 3010, Australia.
| | - James A Bourne
- Australian Regenerative Medicine Institute, Monash University, Building 75, Level 1 North STRIP 1, Clayton, VIC 3800, Australia.
| |
Collapse
|
32
|
Yu H, Vu THK, Cho KS, Guo C, Chen DF. Mobilizing endogenous stem cells for retinal repair. Transl Res 2014; 163:387-98. [PMID: 24333552 PMCID: PMC3976683 DOI: 10.1016/j.trsl.2013.11.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 11/18/2013] [Accepted: 11/19/2013] [Indexed: 02/06/2023]
Abstract
Irreversible vision loss is most often caused by the loss of function and subsequent death of retinal neurons, such as photoreceptor cells-the cells that initiate vision by capturing and transducing signals of light. One reason why retinal degenerative diseases are devastating is that, once retinal neurons are lost, they don't grow back. Stem cell-based cell replacement strategy for retinal degenerative diseases are leading the way in clinical trials of transplantation therapy, and the exciting findings in both human and animal models point to the possibility of restoring vision through a cell replacement regenerative approach. A less invasive method of retinal regeneration by mobilizing endogenous stem cells is, thus, highly desirable and promising for restoring vision. Although many obstacles remain to be overcome, the field of endogenous retinal repair is progressing at a rapid pace, with encouraging results in recent years.
Collapse
Affiliation(s)
- Honghua Yu
- Department of Ophthalmology, Liuhuaqiao Hospital, Guangzhou, PR China; Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, Mass
| | - Thi Hong Khanh Vu
- Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, Mass; Department of Ophthalmology, Leiden University Medical Center, Leiden, Netherlands
| | - Kin-Sang Cho
- Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, Mass
| | - Chenying Guo
- Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, Mass
| | - Dong Feng Chen
- Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, Mass; VA Boston Healthcare System, Boston, Mass.
| |
Collapse
|
33
|
Abstract
As the emergence of cancer is most frequent in proliferating tissues, replication errors are considered to be at the base of this disease. This review concentrates mainly on two neural cancers, neuroblastoma and glioma, with completely different backgrounds that are well documented with respect to their ontogeny. Although clinical data on other cancers of the nervous system are available, usually little can be said about their origins. Neuroblastoma is initiated in the embryo at a moment when the nervous system (NS) is in full expansion and occasionally genomic damage can lead to neoplasia. Glioma, to the contrary, occurs in the adult brain supposed to be mostly in a postmitotic state. According to current consensus, neural stem cells located in the subventricular zone (SVZ) in the adult are thought to accumulate enough genomic mutations to diverge on a carcinogenic course leading to diverse forms of glioma. After weighing the pros and cons of this current hypothesis in this review, it will be argued that this may be improbable, yielding to the original old concept of glial origin of glioma.
Collapse
|
34
|
Chern CM, Wang YH, Liou KT, Hou YC, Chen CC, Shen YC. 2-Methoxystypandrone ameliorates brain function through preserving BBB integrity and promoting neurogenesis in mice with acute ischemic stroke. Biochem Pharmacol 2014; 87:502-14. [DOI: 10.1016/j.bcp.2013.11.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 11/20/2013] [Accepted: 11/22/2013] [Indexed: 11/15/2022]
|
35
|
Shetty GA, Hattiangady B, Shetty AK. Neural stem cell- and neurogenesis-related gene expression profiles in the young and aged dentate gyrus. AGE (DORDRECHT, NETHERLANDS) 2013; 35:2165-2176. [PMID: 23322452 PMCID: PMC3824978 DOI: 10.1007/s11357-012-9507-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 12/27/2012] [Indexed: 06/01/2023]
Abstract
Hippocampal neurogenesis, important for memory and mood function, wanes greatly in old age. Studies in rat models have implied that this decrease is not due to loss of neural stem cells (NSCs) in the subgranular zone of the dentate gyrus (DG) but rather due to an increased quiescence of NSCs. Additional studies have suggested that changes in the microenvironment, particularly declines in the concentrations of neurotrophic factors, underlie this change. In this study, we compared the expression of 84 genes that are important for NSC proliferation and neurogenesis between the DG of young (4 months old) and aged (24 months old) Fischer 344 rats, using a quantitative real-time polymerase chain reaction array. Interestingly, the expression of a vast majority of genes that have been reported previously to positively or negatively regulate NSC proliferation was unaltered with aging. Furthermore, most genes important for cell cycle arrest, regulation of cell differentiation, growth factors and cytokine levels, synaptic functions, apoptosis, cell adhesion and cell signaling, and regulation of transcription displayed stable expression in the DG with aging. The exceptions included increased expression of genes important for NSC proliferation and neurogenesis (Stat3 and Shh), DNA damage response and NF-kappaB signaling (Cdk5rap3), neuromodulation (Adora1), and decreased expression of a gene important for neuronal differentiation (HeyL). Thus, age-related decrease in hippocampal neurogenesis is not associated with a decline in the expression of selected genes important for NSC proliferation and neurogenesis in the DG.
Collapse
Affiliation(s)
- Geetha A. Shetty
- />Institute for Regenerative Medicine, Texas A&M Health Science Center College of Medicine at Scott & White, 5701 Airport Road, Module C, Temple, 76502 TX USA
- />Research Service, Olin E. Teague Veterans’ Medical Center, CTVHCS, Temple, TX USA
- />Department of Molecular and Cellular Medicine, Texas A&M Health Science Center College of Medicine, College Station, TX USA
| | - Bharathi Hattiangady
- />Institute for Regenerative Medicine, Texas A&M Health Science Center College of Medicine at Scott & White, 5701 Airport Road, Module C, Temple, 76502 TX USA
- />Research Service, Olin E. Teague Veterans’ Medical Center, CTVHCS, Temple, TX USA
- />Department of Molecular and Cellular Medicine, Texas A&M Health Science Center College of Medicine, College Station, TX USA
- />Division of Neurosurgery, Duke University Medical Center, Durham, NC USA
- />Research and Surgery Services, Durham Veterans Affairs Medical Center, Durham, NC USA
| | - Ashok K. Shetty
- />Institute for Regenerative Medicine, Texas A&M Health Science Center College of Medicine at Scott & White, 5701 Airport Road, Module C, Temple, 76502 TX USA
- />Research Service, Olin E. Teague Veterans’ Medical Center, CTVHCS, Temple, TX USA
- />Department of Molecular and Cellular Medicine, Texas A&M Health Science Center College of Medicine, College Station, TX USA
- />Division of Neurosurgery, Duke University Medical Center, Durham, NC USA
- />Research and Surgery Services, Durham Veterans Affairs Medical Center, Durham, NC USA
| |
Collapse
|
36
|
Kimura M, Lee Y, Miller R, Castillo M. Glioblastoma multiforme: relationship to subventricular zone and recurrence. Neuroradiol J 2013; 26:542-7. [PMID: 24199814 DOI: 10.1177/197140091302600507] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 08/22/2013] [Indexed: 11/17/2022] Open
Abstract
Neurogenesis in the adult mammalian brain is active in two areas: the subgranular zone in the dentate gyrus of the hippocampus and the subventricular zone. Cancer stem cells have been isolated from malignant brain tumors and it is widely believed they arise from transformed endogenous stem cells. We sought to determine if the initial location of glioblastoma (GB) as seen on conventional MRI and its relationship to the subventricular zone (SVZ) predicts the pattern of recurrence. We analyzed the initial (prior to any treatment) and last follow-up MR studies in 49 patients with GB. On post contrast images all non-treated GB were divided into three groups according to the relationship of their enhancing margins to the SVZ: Group I (directly in contact with the SVZ), Group II (in the subcortical [SC] region) and Group III (in both the SVZ and SC regions). Recurrences or continuous growth seen as enhancing areas on follow-up studies were characterized as local, spread, or distant according to their contact with the surgical bed and correlated with the locations of the initial tumors. Local and spread patterns of recurrence occurred with nearly equal frequency (45 and 43% each, respectively) and distant in 12%. In Group I, 80% showed a spread pattern, 20% a local pattern, and none a distant pattern. In Group II, 45% showed a spread pattern, 35% a local pattern, and a 20% distant one. In Group III, 58% showed a local pattern, 33% a spread pattern, and 8% distant one. Unlike other reports, the location of GB in relation to the SVZ in our patients did not predict the pattern of tumor recurrence and/or extension in our patients.
Collapse
|
37
|
Tu J, Yang F, Wan J, Liu Y, Zhang J, Wu B, Liu Y, Zeng S, Wang L. Light-controlled astrocytes promote human mesenchymal stem cells toward neuronal differentiation and improve the neurological deficit in stroke rats. Glia 2013; 62:106-21. [PMID: 24272706 DOI: 10.1002/glia.22590] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 09/25/2013] [Accepted: 10/07/2013] [Indexed: 01/08/2023]
Abstract
Astrocytes are key components of the central nervous system (CNS) and release factors to support neural stem cell proliferation, differentiation, and migration. Adenosine 5'-triphosphate (ATP) is one of the key factors released upon activation of astrocytes that regulates the neural stem cell's function. However, it is not clear whether ATP derived from the depolarized astrocytes plays a vital role in promoting the neuronal differentiation of mesenchymal stem cells (MSCs) in vitro and in vivo. Herein, for the first time, we co-cultured MSCs with light-stimulated-channelrhodopsin-2 (ChR2)-astrocytes, and observed that the neuronal differentiation of MSCs was enhanced by expressing more neuronal markers, Tuj1 and NeuN. The ChR2-astrocyte-conditioned medium also stimulated MSCs differentiating into neuronal lineage cells by expressing more Tuj1 and Pax6, which was blocked by the P2X receptor antagonist, TNP-ATP. Then we found that light-depolarization of astrocytes significantly increased ATP accumulation in their bathing medium without impairing the cell membrane. We further found that ATP up-regulated the Tuj1, Pax6, FZD8 and β-catenin mRNA levels of MSCs, which could be reversed by application of TNP-ATP. Together these in vitro data provided convergent evidence that ATP from light-depolarized-astrocytes activated the wnt/β-catenin signaling of MSCs through binding to the P2X receptors, and promoted the neuronal differentiation of MSCs. Finally but importantly, our study also demonstrated in stroke rats that light-controlled astrocytes stimulated endogenous ATP release into the ischemic area to influence the transplanted MSCs, resulting in promoting the MSCs towards neuronal differentiation and improvements of neurological deficit.
Collapse
Affiliation(s)
- Jie Tu
- Shenzhen Key Lab of Neuropsychiatric Modulation, Key Laboratory for Health Informatics at Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Fang Y, Cho KS, Tchedre K, Lee SW, Guo C, Kinouchi H, Fried S, Sun X, Chen DF. Ephrin-A3 suppresses Wnt signaling to control retinal stem cell potency. Stem Cells 2013; 31:349-59. [PMID: 23165658 DOI: 10.1002/stem.1283] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 10/23/2012] [Indexed: 11/09/2022]
Abstract
The ciliary epithelium (CE) of adult mammals has been reported to provide a source of retinal stem cells (RSCs) that can give rise to all retinal cell types in vitro. A recent study, however, suggests that CE-derived cells possess properties of pigmented ciliary epithelial cells and display little neurogenic potential. Here we show that the neurogenic potential of CE-derived cells is negatively regulated by ephrin-A3, which is upregulated in the CE of postnatal mice and presents a strong prohibitory niche for adult RSCs. Addition of ephrin-A3 inhibits proliferation of CE-derived RSCs and increases pigment 349 cell 359. In contrast, absence of ephrin-A3 promotes proliferation and increases expression of neural progenitor cell markers and photoreceptor progeny. The negative effects of ephrin-A3 on CE-derived RSCs are mediated through activation of an EphA4 receptor and suppression of Wnt3a/β-catenin signaling. Together, our data suggest that CE-derived RSCs contain the intrinsic machinery to generate photoreceptors and other retinal neurons, while the CE of adult mice expresses negative regulators that prohibit the proliferation and neural differentiation of RSCs. Manipulating ephrin and Wnt/β-catenin signaling may, thus, represent a viable approach in activating the endogenous neurogenic potential of CE-derived RSCs for treating photoreceptor damage and retinal degenerative disorders.
Collapse
Affiliation(s)
- Yuan Fang
- Department of Ophthalmology and Visual Science, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
39
|
The sonic hedgehog pathway mediates brain plasticity and subsequent functional recovery after bone marrow stromal cell treatment of stroke in mice. J Cereb Blood Flow Metab 2013; 33:1015-24. [PMID: 23549381 PMCID: PMC3705435 DOI: 10.1038/jcbfm.2013.50] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 03/05/2013] [Accepted: 03/07/2013] [Indexed: 01/03/2023]
Abstract
Bone marrow stromal cells (MSCs) improve neurologic recovery after middle cerebral artery occlusion (MCAo). To examine whether in vivo blockage of the endogenous sonic hedgehog (Shh) pathway affects grafted MSC-induced neurologic benefits, MCAo mice were administered: vehicle (control); cyclopamine (CP)- a specific Shh pathway inhibitor; MSC; and MSC and cyclopamine (MSC-CP). Neurologic function was evaluated after MCAo. Electron microscopy and immunofluorescence staining were employed to measure synapse density, protein expression of tissue plasminogen activator (tPA), and Shh in parenchymal cells in the ischemic boundary zone (IBZ), respectively. Marrow stromal cell treatment significantly enhanced functional recovery after ischemia, concurrent with increases of synaptophysin, synapse density, and myelinated axons along the IBZ, and significantly increased tPA and Shh expression in astrocytes and neurons compared with control. After treatment with MSC-CP or CP, the above effects were reversed. Co-culture of MSCs with cortical neurons confirmed the effect of Shh on MSC-mediated neurite outgrowth. Our data support the hypothesis that the Shh pathway mediates brain plasticity via tPA and thereby functional recovery after treatment of stroke with MSCs.
Collapse
|
40
|
Marchetti B, L'Episcopo F, Morale MC, Tirolo C, Testa N, Caniglia S, Serapide MF, Pluchino S. Uncovering novel actors in astrocyte-neuron crosstalk in Parkinson's disease: the Wnt/β-catenin signaling cascade as the common final pathway for neuroprotection and self-repair. Eur J Neurosci 2013; 37:1550-63. [PMID: 23461676 PMCID: PMC3660182 DOI: 10.1111/ejn.12166] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 01/21/2013] [Accepted: 01/25/2013] [Indexed: 12/31/2022]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder characterized by progressive loss of dopaminergic (DAergic) neuronal cell bodies in the substantia nigra pars compacta and gliosis. The cause and mechanisms underlying the demise of nigrostriatal DAergic neurons are ill-defined, but interactions between genes and environmental factors are recognized to play a critical role in modulating the vulnerability to PD. Current evidence points to reactive glia as a pivotal factor in PD pathophysiology, playing both protective and destructive roles. Here, the contribution of reactive astrocytes and their ability to modulate DAergic neurodegeneration, neuroprotection and neurorepair in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) rodent model of PD will be discussed in the light of novel emerging evidence implicating wingless-type mouse mammary tumor virus integration site (Wnt)/β-catenin signaling as a strong candidate in MPTP-induced nigrostriatal DAergic plasticity. In this work, we highlight an intrinsic Wnt1/frizzled-1/β-catenin tone that critically contributes to the survival and protection of adult midbrain DAergic neurons, with potential implications for drug design or drug action in PD. The dynamic interplay between astrocyte-derived factors and neurogenic signals in MPTP-induced nigrostriatal DAergic neurotoxicity and repair will be summarized, together with recent findings showing a critical role of glia-neural stem/progenitor cell (NPC) interactions aimed at overcoming neurodegeneration and inducing neurorestoration. Understanding the intrinsic plasticity of nigrostriatal DAergic neurons and deciphering the signals facilitating the crosstalk between astrocytes, microglia, DAergic neurons and NPCs may have major implications for the role of stem cell technology in PD, and for identifying potential therapeutic targets to induce endogenous neurorepair.
Collapse
Affiliation(s)
- Bianca Marchetti
- Department of Clinical and Molecular Biomedicine, Pharmacology Section, Medical School, University of Catania, Catania, Italy.
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Li T, Pan YW, Wang W, Abel G, Zou J, Xu L, Storm DR, Xia Z. Targeted deletion of the ERK5 MAP kinase impairs neuronal differentiation, migration, and survival during adult neurogenesis in the olfactory bulb. PLoS One 2013; 8:e61948. [PMID: 23630619 PMCID: PMC3632513 DOI: 10.1371/journal.pone.0061948] [Citation(s) in RCA: 27] [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: 01/03/2013] [Accepted: 03/15/2013] [Indexed: 01/13/2023] Open
Abstract
Recent studies have led to the exciting idea that adult-born neurons in the olfactory bulb (OB) may be critical for complex forms of olfactory behavior in mice. However, signaling mechanisms regulating adult OB neurogenesis are not well defined. We recently reported that extracellular signal-regulated kinase (ERK) 5, a MAP kinase, is specifically expressed in neurogenic regions within the adult brain. This pattern of expression suggests a role for ERK5 in the regulation of adult OB neurogenesis. Indeed, we previously reported that conditional deletion of erk5 in adult neurogenic regions impairs several forms of olfactory behavior in mice. Thus, it is important to understand how ERK5 regulates adult neurogenesis in the OB. Here we present evidence that shRNA suppression of ERK5 in adult neural stem/progenitor cells isolated from the subventricular zone (SVZ) reduces neurogenesis in culture. By contrast, ectopic activation of endogenous ERK5 signaling via expression of constitutive active MEK5, an upstream activating kinase for ERK5, stimulates neurogenesis. Furthermore, inducible and conditional deletion of erk5 specifically in the neurogenic regions of the adult mouse brain interferes with cell cycle exit of neuroblasts, impairs chain migration along the rostral migratory stream and radial migration into the OB. It also inhibits neuronal differentiation and survival. These data suggest that ERK5 regulates multiple aspects of adult OB neurogenesis and provide new insights concerning signaling mechanisms governing adult neurogenesis in the SVZ-OB axis.
Collapse
Affiliation(s)
- Tan Li
- Toxicology Program in the Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America
- Department of Biochemistry and Genetics, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yung-Wei Pan
- Graduate Program in Molecular and Cellular Biology, University of Washington, Seattle, Washington, United States of America
| | - Wenbin Wang
- Toxicology Program in the Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America
| | - Glen Abel
- Toxicology Program in the Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America
| | - Junhui Zou
- Toxicology Program in the Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America
| | - Lihong Xu
- Department of Biochemistry and Genetics, Zhejiang University, Hangzhou, Zhejiang, China
| | - Daniel R. Storm
- Department of Pharmacology, University of Washington, Seattle, Washington, United States of America
| | - Zhengui Xia
- Toxicology Program in the Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America
- Graduate Program in Molecular and Cellular Biology, University of Washington, Seattle, Washington, United States of America
- * E-mail:
| |
Collapse
|
42
|
L'Episcopo F, Tirolo C, Testa N, Caniglia S, Morale MC, Impagnatiello F, Pluchino S, Marchetti B. Aging-induced Nrf2-ARE pathway disruption in the subventricular zone drives neurogenic impairment in parkinsonian mice via PI3K-Wnt/β-catenin dysregulation. J Neurosci 2013; 33:1462-85. [PMID: 23345222 PMCID: PMC3564519 DOI: 10.1523/jneurosci.3206-12.2013] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 11/13/2012] [Accepted: 11/19/2012] [Indexed: 12/21/2022] Open
Abstract
Aging and exposure to environmental toxins including MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) are strong risk factors for developing Parkinson's disease (PD), a common neurologic disorder characterized by selective degeneration of midbrain dopaminergic (DAergic) neurons and astrogliosis. Aging and PD impair the subventricular zone (SVZ), one of the most important brain regions for adult neurogenesis. Because inflammation and oxidative stress are the hallmarks of aging and PD, we investigated the nature, timing, and signaling mechanisms contributing to aging-induced SVZ stem/neuroprogenitor cell (NPC) inhibition in aging male mice and attempted to determine to what extent manipulation of these pathways produces a functional response in the outcome of MPTP-induced DAergic toxicity. We herein reveal an imbalance of Nrf2-driven antioxidant/anti-inflammatory genes, such as Heme oxygenase1 in the SVZ niche, starting by middle age, amplified upon neurotoxin treatment and associated with an exacerbated proinflammatory SVZ microenvironment converging to dysregulate the Wingless-type MMTV integration site (Wnt)/β-catenin signaling, a key regulatory pathway for adult NPCs. In vitro experiments using coculture paradigms uncovered aged microglial proinflammatory mediators as critical inhibitors of NPC proliferative potential. We also found that interruption of PI3K (phosphatidylinositol3-kinase)/Akt and the Wnt/Fzd/β-catenin signaling cascades, which switch glycogen synthase kinase 3β (GSK-3β) activation on and off, were causally related to the impairment of SVZ-NPCs. Moreover, a synergy between dysfunctional microglia of aging mice and MPTP exposure further inhibited astrocyte proneurogenic properties, including the expression of key Wnts components. Last, pharmacological activation/antagonism studies in vivo and in vitro suggest the potential that aged SVZ manipulation is associated with DAergic functional recovery.
Collapse
Affiliation(s)
- Francesca L'Episcopo
- Oasi Maria Institute for Research and Care on Mental Retardation and Brain Aging, Neuropharmacology Section, 94018 Troina, Italy
- Department of Clinical and Molecular Biomedicine, Pharmacology Section, School of Medicine, University of Catania, 95125 Catania, Italy
| | - Cataldo Tirolo
- Oasi Maria Institute for Research and Care on Mental Retardation and Brain Aging, Neuropharmacology Section, 94018 Troina, Italy
| | - Nunzio Testa
- Oasi Maria Institute for Research and Care on Mental Retardation and Brain Aging, Neuropharmacology Section, 94018 Troina, Italy
| | - Salvatore Caniglia
- Oasi Maria Institute for Research and Care on Mental Retardation and Brain Aging, Neuropharmacology Section, 94018 Troina, Italy
| | - Maria C. Morale
- Oasi Maria Institute for Research and Care on Mental Retardation and Brain Aging, Neuropharmacology Section, 94018 Troina, Italy
| | | | - Stefano Pluchino
- John van Geest Centre for Brain Repair, Wellcome Trust-Medical Research Council Stem Cell Institute and NIHR Biomedical Research Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0PY, United Kingdom
| | - Bianca Marchetti
- Oasi Maria Institute for Research and Care on Mental Retardation and Brain Aging, Neuropharmacology Section, 94018 Troina, Italy
- Department of Clinical and Molecular Biomedicine, Pharmacology Section, School of Medicine, University of Catania, 95125 Catania, Italy
| |
Collapse
|
43
|
Christie KJ, Turnley AM. Regulation of endogenous neural stem/progenitor cells for neural repair-factors that promote neurogenesis and gliogenesis in the normal and damaged brain. Front Cell Neurosci 2013; 6:70. [PMID: 23346046 PMCID: PMC3548228 DOI: 10.3389/fncel.2012.00070] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 12/30/2012] [Indexed: 01/17/2023] Open
Abstract
Neural stem/precursor cells in the adult brain reside in the subventricular zone (SVZ) of the lateral ventricles and the subgranular zone (SGZ) of the dentate gyrus in the hippocampus. These cells primarily generate neuroblasts that normally migrate to the olfactory bulb (OB) and the dentate granule cell layer respectively. Following brain damage, such as traumatic brain injury, ischemic stroke or in degenerative disease models, neural precursor cells from the SVZ in particular, can migrate from their normal route along the rostral migratory stream (RMS) to the site of neural damage. This neural precursor cell response to neural damage is mediated by release of endogenous factors, including cytokines and chemokines produced by the inflammatory response at the injury site, and by the production of growth and neurotrophic factors. Endogenous hippocampal neurogenesis is frequently also directly or indirectly affected by neural damage. Administration of a variety of factors that regulate different aspects of neural stem/precursor biology often leads to improved functional motor and/or behavioral outcomes. Such factors can target neural stem/precursor proliferation, survival, migration and differentiation into appropriate neuronal or glial lineages. Newborn cells also need to subsequently survive and functionally integrate into extant neural circuitry, which may be the major bottleneck to the current therapeutic potential of neural stem/precursor cells. This review will cover the effects of a range of intrinsic and extrinsic factors that regulate neural stem/precursor cell functions. In particular it focuses on factors that may be harnessed to enhance the endogenous neural stem/precursor cell response to neural damage, highlighting those that have already shown evidence of preclinical effectiveness and discussing others that warrant further preclinical investigation.
Collapse
Affiliation(s)
- Kimberly J Christie
- Neural Regeneration Laboratory, Department of Anatomy and Neuroscience, Centre for Neuroscience Research, The University of Melbourne Parkville, VIC, Australia
| | | |
Collapse
|
44
|
Nichols JE, Niles JA, DeWitt D, Prough D, Parsley M, Vega S, Cantu A, Lee E, Cortiella J. Neurogenic and neuro-protective potential of a novel subpopulation of peripheral blood-derived CD133+ ABCG2+CXCR4+ mesenchymal stem cells: development of autologous cell-based therapeutics for traumatic brain injury. Stem Cell Res Ther 2013; 4:3. [PMID: 23290300 PMCID: PMC3707064 DOI: 10.1186/scrt151] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 12/20/2012] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Nervous system injuries comprise a diverse group of disorders that include traumatic brain injury (TBI). The potential of mesenchymal stem cells (MSCs) to differentiate into neural cell types has aroused hope for the possible development of autologous therapies for central nervous system injury. METHODS In this study we isolated and characterized a human peripheral blood derived (HPBD) MSC population which we examined for neural lineage potential and ability to migrate in vitro and in vivo. HPBD CD133+, ATP-binding cassette sub-family G member 2 (ABCG2)+, C-X-C chemokine receptor type 4 (CXCR4)+ MSCs were differentiated after priming with β-mercaptoethanol (β-ME) combined with trans-retinoic acid (RA) and culture in neural basal media containing basic fibroblast growth factor (FGF2) and epidermal growth factor (EGF) or co-culture with neuronal cell lines. Differentiation efficiencies in vitro were determined using flow cytometry or fluorescent microscopy of cytospins made of FACS sorted positive cells after staining for markers of immature or mature neuronal lineages. RA-primed CD133+ABCG2+CXCR4+ human MSCs were transplanted into the lateral ventricle of male Sprague-Dawley rats, 24 hours after sham or traumatic brain injury (TBI). All animals were evaluated for spatial memory performance using the Morris Water Maze (MWM) Test. Histological examination of sham or TBI brains was done to evaluate MSC survival, migration and differentiation into neural lineages. We also examined induction of apoptosis at the injury site and production of MSC neuroprotective factors. RESULTS CD133+ABCG2+CXCR4+ MSCs consistently expressed markers of neural lineage induction and were positive for nestin, microtubule associated protein-1β (MAP-1β), tyrosine hydroxylase (TH), neuron specific nuclear protein (NEUN) or type III beta-tubulin (Tuj1). Animals in the primed MSC treatment group exhibited MWM latency results similar to the uninjured (sham) group with both groups showing improvements in latency. Histological examination of brains of these animals showed that in uninjured animals the majority of MSCs were found in the lateral ventricle, the site of transplantation, while in TBI rats MSCs were consistently found in locations near the injury site. We found that levels of apoptosis were less in MSC treated rats and that MSCs could be shown to produce neurotropic factors as early as 2 days following transplantation of cells. In TBI rats, at 1 and 3 months post transplantation cells were generated which expressed markers of neural lineages including immature as well as mature neurons. CONCLUSIONS These results suggest that PBD CD133+ABCG2+CXCR4+ MSCs have the potential for development as an autologous treatment for TBI and neurodegenerative disorders and that MSC derived cell products produced immediately after transplantation may aid in reducing the immediate cognitive defects of TBI.
Collapse
|
45
|
Fonseca ETD, Mançanares ACF, Ambrósio CE, Miglino MA. Review point on neural stem cells and neurogenic areas of the central nervous system. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojas.2013.33036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
46
|
Joo KM, Kang BG, Yeon JY, Cho YJ, An JY, Song HS, Won JH, Kim SJ, Hong SC, Nam DH. Experimental and clinical factors influencing long-term stable in vitro expansion of multipotent neural cells from human adult temporal lobes. Exp Neurol 2012. [PMID: 23201097 DOI: 10.1016/j.expneurol.2012.11.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Autologous adult human neural stem cells may be used for regenerative cell therapies bypass potential ethical problems. However, stable in vitro expansion protocols and experimental/clinical factors influencing primary cultures need to be further elucidated for clinically applicable techniques. To address these issues, we obtained biopsy specimens from 23 temporal lobe epilepsy patients and adult human multipotent neural cells (ahMNCs) were primarily cultured in a defined attachment culture condition. When the success of primary cultures was defined as stable expansion of cells (>ten in vitro passages) and expression of NSC markers, success rate of the primary culture was 39% (nine of 23 temporal lobes). During the long-term expansion, expressions of NSC markers and differentiation potentials into astrocytes and neurons were maintained. After the 18th sub-culture, spontaneous senescence and differentiation were observed, and the cultivated ahMNCs ceased their proliferation. The culture results were not affected by seizure characteristics; however, an older age (>40 years) and a smaller sample volume (<2 ml) were found to exert negative influences on the primary culture results. Furthermore therapeutic effects of ahMNCs against stroke were analyzed in an animal model. Transplantation of ahMNCs cells reduced infarction volumes and enhanced motor activity, significantly. The results here would provide promising experimental and clinical strategy of using patient-specific autologous ahMNCs in regenerative medicine in the future.
Collapse
Affiliation(s)
- Kyeung Min Joo
- Department of Anatomy and Cell Biology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, #300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do, 440-746, South Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Moreno-EstellÉs M, GonzÁlez-Gómez P, Hortigüela R, Díaz-Moreno M, San Emeterio J, AL C, FariÑas I, Mira H. Symmetric Expansion of Neural Stem Cells from the Adult Olfactory Bulb Is Driven by Astrocytes Via WNT7A. Stem Cells 2012; 30:2796-809. [DOI: 10.1002/stem.1243] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 08/14/2012] [Indexed: 12/28/2022]
|
48
|
Friedmann-Morvinski D, Bushong EA, Ke E, Soda Y, Marumoto T, Singer O, Ellisman MH, Verma IM. Dedifferentiation of neurons and astrocytes by oncogenes can induce gliomas in mice. Science 2012; 338:1080-4. [PMID: 23087000 DOI: 10.1126/science.1226929] [Citation(s) in RCA: 406] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive malignant primary brain tumor in humans. Here we show that gliomas can originate from differentiated cells in the central nervous system (CNS), including cortical neurons. Transduction by oncogenic lentiviral vectors of neural stem cells (NSCs), astrocytes, or even mature neurons in the brains of mice can give rise to malignant gliomas. All the tumors, irrespective of the site of lentiviral vector injection (the initiating population), shared common features of high expression of stem or progenitor markers and low expression of differentiation markers. Microarray analysis revealed that tumors of astrocytic and neuronal origin match the mesenchymal GBM subtype. We propose that most differentiated cells in the CNS upon defined genetic alterations undergo dedifferentiation to generate a NSC or progenitor state to initiate and maintain the tumor progression, as well as to give rise to the heterogeneous populations observed in malignant gliomas.
Collapse
|
49
|
Ro SH, Liu D, Yeo H, Paik JH. FoxOs in neural stem cell fate decision. Arch Biochem Biophys 2012; 534:55-63. [PMID: 22902436 DOI: 10.1016/j.abb.2012.07.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Revised: 07/30/2012] [Accepted: 07/31/2012] [Indexed: 02/07/2023]
Abstract
Neural stem cells (NSCs) persist over the lifespan of mammals to give rise to committed progenitors and their differentiated cells in order to maintain the brain homeostasis. To this end, NSCs must be able to self-renew and otherwise maintain their quiescence. Suppression of aberrant proliferation or undesired differentiation is crucial to preclude either malignant growth or precocious depletion of NSCs. The PI3K-Akt-FoxO signaling pathway plays a central role in the regulation of multiple stem cells including one in the mammalian brain. In particular, members of FoxO family transcription factors are highly expressed in these stem cells. As an important downstream effector of growth, differentiation, and stress stimuli, mammalian FoxO transcription factor family controls cellular proliferation, oxidative stress response, homeostasis, and eventual maintenance of long-term repopulating potential. The review will focus on the current understanding of FoxO function in NSCs as well as discuss their biological activities that contribute to determining neural stem cell fate.
Collapse
Affiliation(s)
- Seung-Hyun Ro
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | | | | | | |
Collapse
|
50
|
Zhao J, He H, Zhou K, Ren Y, Shi Z, Wu Z, Wang Y, Lu Y, Jiao J. Neuronal transcription factors induce conversion of human glioma cells to neurons and inhibit tumorigenesis. PLoS One 2012; 7:e41506. [PMID: 22859994 PMCID: PMC3409237 DOI: 10.1371/journal.pone.0041506] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 06/22/2012] [Indexed: 01/09/2023] Open
Abstract
Recent findings have demonstrated that the overexpression of lineage-specific transcription factors induces cell fate changes among diverse cell types. For example, neurons can be generated from mouse and human fibroblasts. It is well known that neurons are terminally differentiated cells that do not divide. Therefore, we consider how to induce glioma cells to become neurons by introducing transcription factors. Here, we describe the efficient generation of induced neuronal (iN) cells from glioma cells by the infection with three transcription factors: Ascl1, Brn2 and Ngn2 (ABN). iN cells expressed multiple neuronal markers and fired action potentials, similar to the properties of authentic neurons. Importantly, the proliferation of glioma cells following ABN overexpression was dramatically inhibited in both in vitro and in vivo experiments. In addition, iN cells that originated from human glioma cells did not continue to grow when they were sorted and cultured in vitro. The strategies by which glioma cells are induced to become neurons may be used to clinically study methods for inhibiting tumor growth.
Collapse
Affiliation(s)
- Junli Zhao
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Hua He
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Kechun Zhou
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Yonggang Ren
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Zixiao Shi
- Institute of Zoology, State Key Laboratory of Reproductive Biology, Chinese Academy of Sciences, Beijing, China
| | | | - Yizheng Wang
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Yicheng Lu
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
- * E-mail: (YL); (JJ)
| | - Jianwei Jiao
- Institute of Zoology, State Key Laboratory of Reproductive Biology, Chinese Academy of Sciences, Beijing, China
- * E-mail: (YL); (JJ)
| |
Collapse
|