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Su Y, Wang X, Yang Y, Chen L, Xia W, Hoi KK, Li H, Wang Q, Yu G, Chen X, Wang S, Wang Y, Xiao L, Verkhratsky A, Fancy SPJ, Yi C, Niu J. Astrocyte endfoot formation controls the termination of oligodendrocyte precursor cell perivascular migration during development. Neuron 2023; 111:190-201.e8. [PMID: 36384142 PMCID: PMC9922530 DOI: 10.1016/j.neuron.2022.10.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 09/14/2022] [Accepted: 10/22/2022] [Indexed: 11/17/2022]
Abstract
Oligodendrocyte precursor cells (OPCs) undergo an extensive and coordinated migration in the developing CNS, using the pre-formed scaffold of developed blood vessels as their physical substrate for migration. While OPC association with vasculature is critical for dispersal, equally important for permitting differentiation and proper myelination of target axons is their appropriate and timely detachment, but regulation of this process remains unclear. Here we demonstrate a correlation between the developmental formation of astrocytic endfeet on vessels and the termination of OPC perivascular migration. Ex vivo and in vivo live imaging shows that astrocyte endfeet physically displace OPCs from vasculature, and genetic abrogation of endfoot formation hinders both OPC detachment from vessels and subsequent differentiation. Astrocyte-derived semaphorins 3a and 6a act to repel OPCs from blood vessels at the cessation of their perivascular migration and, in so doing, permit subsequent OPC differentiation by insulating them from a maturation inhibitory endothelial niche.
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Affiliation(s)
- Yixun Su
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China; Research Centre, Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen 518107, China
| | - Xiaorui Wang
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China
| | - Yujian Yang
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China; Department of Ophthalmology, Army Specialty Medical Center, Third Military Medical University, Chongqing 400042, China
| | - Liang Chen
- Department of Orthopedics, Army Specialty Medical Center, Third Military Medical University, Chongqing 400042, China
| | - Wenlong Xia
- Department of Neurology, Department of Pediatrics, Division of Neuroimmunology and Glial Biology, Newborn Brain Research Institute, University of California at San Francisco, San Francisco, CA 94158, USA
| | - Kimberly K Hoi
- Department of Neurology, Department of Pediatrics, Division of Neuroimmunology and Glial Biology, Newborn Brain Research Institute, University of California at San Francisco, San Francisco, CA 94158, USA
| | - Hui Li
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China; Research Centre, Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen 518107, China
| | - Qi Wang
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China; Research Centre, Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen 518107, China
| | - Guangdan Yu
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China
| | - Xiaoying Chen
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China
| | - Shouyu Wang
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China
| | - Yuxin Wang
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China
| | - Lan Xiao
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China
| | - Alexei Verkhratsky
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester M139PL, UK; Achucarro Center for Neuroscience, IKERBASQUE, Bilbao 48011, Spain
| | - Stephen P J Fancy
- Department of Neurology, Department of Pediatrics, Division of Neuroimmunology and Glial Biology, Newborn Brain Research Institute, University of California at San Francisco, San Francisco, CA 94158, USA.
| | - Chenju Yi
- Research Centre, Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen 518107, China.
| | - Jianqin Niu
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, Chongqing 400038, China.
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2
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Xia W, Fancy SPJ. Mechanisms of oligodendrocyte progenitor developmental migration. Dev Neurobiol 2021; 81:985-996. [PMID: 34643996 DOI: 10.1002/dneu.22856] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/25/2021] [Accepted: 09/08/2021] [Indexed: 01/01/2023]
Abstract
Oligodendrocytes, the myelinating cells of the central nervous system (CNS), develop from oligodendrocyte progenitor cells (OPCs) that must first migrate extensively throughout the developing brain and spinal cord. Specified at particular times from discrete regions in the developing CNS, OPCs are one of the most migratory of cell types and disperse rapidly. A variety of factors act on OPCs to trigger intracellular changes that regulate their migration. We will discuss factors that act as long-range guidance cues, those that act to regulate cellular motility, and those that are critical in determining the final positioning of OPCs. In addition, recent evidence has identified the vasculature as the physical substrate used by OPCs for their migration. Several new findings relating to this oligodendroglial-vascular signaling axis reveal new insight on the relationship between OPCs and blood vessels in the developing and adult brain.
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Affiliation(s)
- Wenlong Xia
- Department of Neurology, University of California, San Francisco, San Francisco, California, USA.,Department of Pediatrics, University of California, San Francisco, San Francisco, California, USA.,Division of Neuroimmunology and Glial Biology, University of California, San Francisco, San Francisco, California, USA.,Newborn Brain Research Institute, University of California, San Francisco, San Francisco, California, USA
| | - Stephen P J Fancy
- Department of Neurology, University of California, San Francisco, San Francisco, California, USA.,Department of Pediatrics, University of California, San Francisco, San Francisco, California, USA.,Division of Neuroimmunology and Glial Biology, University of California, San Francisco, San Francisco, California, USA.,Newborn Brain Research Institute, University of California, San Francisco, San Francisco, California, USA
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3
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Carulli D, de Winter F, Verhaagen J. Semaphorins in Adult Nervous System Plasticity and Disease. Front Synaptic Neurosci 2021; 13:672891. [PMID: 34045951 PMCID: PMC8148045 DOI: 10.3389/fnsyn.2021.672891] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/12/2021] [Indexed: 12/13/2022] Open
Abstract
Semaphorins, originally discovered as guidance cues for developing axons, are involved in many processes that shape the nervous system during development, from neuronal proliferation and migration to neuritogenesis and synapse formation. Interestingly, the expression of many Semaphorins persists after development. For instance, Semaphorin 3A is a component of perineuronal nets, the extracellular matrix structures enwrapping certain types of neurons in the adult CNS, which contribute to the closure of the critical period for plasticity. Semaphorin 3G and 4C play a crucial role in the control of adult hippocampal connectivity and memory processes, and Semaphorin 5A and 7A regulate adult neurogenesis. This evidence points to a role of Semaphorins in the regulation of adult neuronal plasticity. In this review, we address the distribution of Semaphorins in the adult nervous system and we discuss their function in physiological and pathological processes.
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Affiliation(s)
- Daniela Carulli
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Royal Academy of Arts and Sciences, Amsterdam, Netherlands
- Department of Neuroscience Rita Levi-Montalcini and Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Turin, Italy
| | - Fred de Winter
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Royal Academy of Arts and Sciences, Amsterdam, Netherlands
| | - Joost Verhaagen
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Royal Academy of Arts and Sciences, Amsterdam, Netherlands
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Limoni G, Niquille M. Semaphorins and Plexins in central nervous system patterning: the key to it all? Curr Opin Neurobiol 2021; 66:224-232. [PMID: 33513538 DOI: 10.1016/j.conb.2020.12.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/17/2022]
Abstract
Semaphorins and Plexins constitute one of the largest family of guidance molecules and receptors involved in setting critical biological steps for central nervous system development. The role of these molecules in axonal development has been extensively characterized but Semaphorins and Plexins are also involved in a variety of other developmental processes, spanning from cell polarization to migration, laminar segregation and neuronal maturation. In this review, we aim to gather discoveries carried in the field of neurodevelopment over the last decade, during which Semaphorin/Plexin complexes have emerged as key regulators of neurogenesis, neural cell migration and adult gliogenesis. As well, we report mechanisms that brought a better understanding of axonal midline crossing.
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Affiliation(s)
- Greta Limoni
- Department of Basic Neuroscience, University Medical Center, University of Geneva, Rue Michel-Servet 1, 1211 Genève 4, Switzerland.
| | - Mathieu Niquille
- Department of Basic Neuroscience, University Medical Center, University of Geneva, Rue Michel-Servet 1, 1211 Genève 4, Switzerland.
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Thomason EJ, Escalante M, Osterhout DJ, Fuss B. The oligodendrocyte growth cone and its actin cytoskeleton: A fundamental element for progenitor cell migration and CNS myelination. Glia 2019; 68:1329-1346. [PMID: 31696982 DOI: 10.1002/glia.23735] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/26/2019] [Accepted: 10/01/2019] [Indexed: 01/06/2023]
Abstract
Cells of the oligodendrocyte (OLG) lineage engage in highly motile behaviors that are crucial for effective central nervous system (CNS) myelination. These behaviors include the guided migration of OLG progenitor cells (OPCs), the surveying of local environments by cellular processes extending from differentiating and pre-myelinating OLGs, and during the process of active myelin wrapping, the forward movement of the leading edge of the myelin sheath's inner tongue along the axon. Almost all of these motile behaviors are driven by actin cytoskeletal dynamics initiated within a lamellipodial structure that is located at the tip of cellular OLG/OPC processes and is structurally as well as functionally similar to the neuronal growth cone. Accordingly, coordinated stoichiometries of actin filament (F-actin) assembly and disassembly at these OLG/OPC growth cones have been implicated in directing process outgrowth and guidance, and the initiation of myelination. Nonetheless, the functional importance of the OLG/OPC growth cone still remains to be fully understood, and, as a unique aspect of actin cytoskeletal dynamics, F-actin depolymerization and disassembly start to predominate at the transition from myelination initiation to myelin wrapping. This review provides an overview of the current knowledge about OLG/OPC growth cones, and it proposes a model in which actin cytoskeletal dynamics in OLG/OPC growth cones are a main driver for morphological transformations and motile behaviors. Remarkably, these activities, at least at the later stages of OLG maturation, may be regulated independently from the transcriptional gene expression changes typically associated with CNS myelination.
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Affiliation(s)
- Elizabeth J Thomason
- Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Miguel Escalante
- Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.,Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Donna J Osterhout
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, New York
| | - Babette Fuss
- Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
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6
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Binamé F, Pham-Van LD, Spenlé C, Jolivel V, Birmpili D, Meyer LA, Jacob L, Meyer L, Mensah-Nyagan AG, Po C, Van der Heyden M, Roussel G, Bagnard D. Disruption of Sema3A/Plexin-A1 inhibitory signalling in oligodendrocytes as a therapeutic strategy to promote remyelination. EMBO Mol Med 2019; 11:e10378. [PMID: 31566924 PMCID: PMC6835579 DOI: 10.15252/emmm.201910378] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 08/23/2019] [Accepted: 09/04/2019] [Indexed: 11/15/2022] Open
Abstract
Current treatments in multiple sclerosis (MS) are modulating the inflammatory component of the disease, but no drugs are currently available to repair lesions. Our study identifies in MS patients the overexpression of Plexin‐A1, the signalling receptor of the oligodendrocyte inhibitor Semaphorin 3A. Using a novel type of peptidic antagonist, we showed the possibility to counteract the Sema3A inhibitory effect on oligodendrocyte migration and differentiation in vitro when antagonizing Plexin‐A1. The use of this compound in vivo demonstrated a myelin protective effect as shown with DTI‐MRI and confirmed at the histological level in the mouse cuprizone model of induced demyelination/remyelination. This effect correlated with locomotor performances fully preserved in chronically treated animals. The administration of the peptide also showed protective effects, leading to a reduced severity of demyelination in the context of experimental autoimmune encephalitis (EAE). Hence, the disruption of the inhibitory microenvironmental molecular barriers allows normal myelinating cells to exert their spontaneous remyelinating capacity. This opens unprecedented therapeutic opportunity for patients suffering a disease for which no curative options are yet available.
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Affiliation(s)
- Fabien Binamé
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Lucas D Pham-Van
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Caroline Spenlé
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Valérie Jolivel
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Dafni Birmpili
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Lionel A Meyer
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Laurent Jacob
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Laurence Meyer
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Ayikoé G Mensah-Nyagan
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Chrystelle Po
- Institut de Physique Biologique, Faculté de Médecine, Strasbourg University, Strasbourg, France
| | - Michaël Van der Heyden
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Guy Roussel
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
| | - Dominique Bagnard
- INSERM U1119 Biopathology of Myelin, Neuroprotection, Therapeutic Strategy, Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg University, Strasbourg, France
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7
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van Tilborg E, de Theije CGM, van Hal M, Wagenaar N, de Vries LS, Benders MJ, Rowitch DH, Nijboer CH. Origin and dynamics of oligodendrocytes in the developing brain: Implications for perinatal white matter injury. Glia 2017; 66:221-238. [PMID: 29134703 PMCID: PMC5765410 DOI: 10.1002/glia.23256] [Citation(s) in RCA: 165] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/17/2017] [Accepted: 10/20/2017] [Indexed: 12/11/2022]
Abstract
Infants born prematurely are at high risk to develop white matter injury (WMI), due to exposure to hypoxic and/or inflammatory insults. Such perinatal insults negatively impact the maturation of oligodendrocytes (OLs), thereby causing deficits in myelination. To elucidate the precise pathophysiology underlying perinatal WMI, it is essential to fully understand the cellular mechanisms contributing to healthy/normal white matter development. OLs are responsible for myelination of axons. During brain development, OLs are generally derived from neuroepithelial zones, where neural stem cells committed to the OL lineage differentiate into OL precursor cells (OPCs). OPCs, in turn, develop into premyelinating OLs and finally mature into myelinating OLs. Recent studies revealed that OPCs develop in multiple waves and form potentially heterogeneous populations. Furthermore, it has been shown that myelination is a dynamic and plastic process with an excess of OPCs being generated and then abolished if not integrated into neural circuits. Myelination patterns between rodents and humans show high spatial and temporal similarity. Therefore, experimental studies on OL biology may provide novel insights into the pathophysiology of WMI in the preterm infant and offers new perspectives on potential treatments for these patients.
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Affiliation(s)
- Erik van Tilborg
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Caroline G M de Theije
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Maurik van Hal
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Nienke Wagenaar
- Department of Neonatology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Linda S de Vries
- Department of Neonatology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Manon J Benders
- Department of Neonatology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - David H Rowitch
- Department of Pediatrics, Eli and Edythe Broad Center for Stem Cell Research and Regeneration Medicine, University of California, San Francisco, San Francisco, California.,Department of Paediatrics, Wellcome Trust-MRC Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Cora H Nijboer
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
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Gutekunst CA, Gross RE. Plexin a4 expression in adult rat cranial nerves. J Chem Neuroanat 2014; 61-62:13-9. [PMID: 24970554 PMCID: PMC4267999 DOI: 10.1016/j.jchemneu.2014.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 05/21/2014] [Accepted: 06/16/2014] [Indexed: 12/16/2022]
Abstract
PlexinsA1-A4 participate in class 3 semaphorin signaling as co-receptors to neuropilin 1 and 2. PlexinA4 is the latest member of the PlexinA subfamily to be identified. In previous studies, we described the expression of PlexinA4 in the brain and spinal cord of the adult rat. Here, antibodies to PlexinA4 were used to reveal immunolabeling in most of the cranial nerve surveyed. Labeling was found in the olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, and hypoglossal nerves. This is the first detailed description of the cellular and subcellular distribution of PlexinA4 in the adult cranial nerves. The findings will set the basis for future studies on the potential role of PlexinA4 in regeneration and repair of the adult central and peripheral nervous system.
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Affiliation(s)
| | - Robert E Gross
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA, USA; Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA; Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA.
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9
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Mecollari V, Nieuwenhuis B, Verhaagen J. A perspective on the role of class III semaphorin signaling in central nervous system trauma. Front Cell Neurosci 2014; 8:328. [PMID: 25386118 PMCID: PMC4209881 DOI: 10.3389/fncel.2014.00328] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 09/29/2014] [Indexed: 01/07/2023] Open
Abstract
Traumatic injury of the central nervous system (CNS) has severe impact on the patients’ quality of life and initiates many molecular and cellular changes at the site of insult. Traumatic CNS injury results in direct damage of the axons of CNS neurons, loss of myelin sheaths, destruction of the surrounding vascular architecture and initiation of an immune response. Class III semaphorins (SEMA3s) are present in the neural scar and influence a wide range of molecules and cell types in and surrounding the injured tissue. SEMA3s and their receptors, neuropilins (NRPs) and plexins (PLXNs) were initially studied because of their involvement in repulsive axon guidance. To date, SEMA3 signaling is recognized to be of crucial importance for re-vascularization, the immune response and remyelination. The purpose of this review is to summarize and discuss how SEMA3s modulate these processes that are all crucial components of the tissue response to injury. Most of the functions for SEMA3s are achieved through their binding partners NRPs, which are also co-receptors for a variety of other molecules implicated in the above processes. The most notable ligands are members of the vascular endothelial growth factor (VEGF) family and the transforming growth factor family. Therefore, a second aim is to highlight the overlapping or competing signaling pathways that are mediated through NRPs in the same processes. In conclusion, we show that the role of SEMA3s goes beyond inhibiting axonal regeneration, since they are also critical modulators of re-vascularization, the immune response and re-myelination.
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Affiliation(s)
- Vasil Mecollari
- Laboratory for Regeneration of Sensorimotor Systems, Netherlands Institute for Neuroscience Amsterdam, Netherlands
| | - Bart Nieuwenhuis
- Laboratory for Regeneration of Sensorimotor Systems, Netherlands Institute for Neuroscience Amsterdam, Netherlands
| | - Joost Verhaagen
- Laboratory for Regeneration of Sensorimotor Systems, Netherlands Institute for Neuroscience Amsterdam, Netherlands ; Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University Amsterdam Amsterdam, Netherlands
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10
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Gallo V, Deneen B. Glial development: the crossroads of regeneration and repair in the CNS. Neuron 2014; 83:283-308. [PMID: 25033178 DOI: 10.1016/j.neuron.2014.06.010] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2014] [Indexed: 02/07/2023]
Abstract
Given the complexities of the mammalian CNS, its regeneration is viewed as the holy grail of regenerative medicine. Extraordinary efforts have been made to understand developmental neurogenesis, with the hopes of clinically applying this knowledge. CNS regeneration also involves glia, which comprises at least 50% of the cellular constituency of the brain and is involved in all forms of injury and disease response, recovery, and regeneration. Recent developmental studies have given us unprecedented insight into the processes that regulate the generation of CNS glia. Because restorative processes often parallel those found in development, we will peer through the lens of developmental gliogenesis to gain a clearer understanding of the processes that underlie glial regeneration under pathological conditions. Specifically, this review will focus on key signaling pathways that regulate astrocyte and oligodendrocyte development and describe how these mechanisms are reutilized in these populations during regeneration and repair after CNS injury.
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Affiliation(s)
- Vittorio Gallo
- Center for Neuroscience Research, Children's National Medical Center, Washington, DC 20010, USA.
| | - Benjamin Deneen
- Department of Neuroscience and Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA.
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11
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Amor S, Peferoen LAN, Vogel DYS, Breur M, van der Valk P, Baker D, van Noort JM. Inflammation in neurodegenerative diseases--an update. Immunology 2014; 142:151-66. [PMID: 24329535 DOI: 10.1111/imm.12233] [Citation(s) in RCA: 365] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 12/12/2022] Open
Abstract
Neurodegeneration, the progressive dysfunction and loss of neurons in the central nervous system (CNS), is the major cause of cognitive and motor dysfunction. While neuronal degeneration is well-known in Alzheimer's and Parkinson's diseases, it is also observed in neurotrophic infections, traumatic brain and spinal cord injury, stroke, neoplastic disorders, prion diseases, multiple sclerosis and amyotrophic lateral sclerosis, as well as neuropsychiatric disorders and genetic disorders. A common link between these diseases is chronic activation of innate immune responses including those mediated by microglia, the resident CNS macrophages. Such activation can trigger neurotoxic pathways leading to progressive degeneration. Yet, microglia are also crucial for controlling inflammatory processes, and repair and regeneration. The adaptive immune response is implicated in neurodegenerative diseases contributing to tissue damage, but also plays important roles in resolving inflammation and mediating neuroprotection and repair. The growing awareness that the immune system is inextricably involved in mediating damage as well as regeneration and repair in neurodegenerative disorders, has prompted novel approaches to modulate the immune system, although it remains whether these approaches can be used in humans. Additional factors in humans include ageing and exposure to environmental factors such as systemic infections that provide additional clues that may be human specific and therefore difficult to translate from animal models. Nevertheless, a better understanding of how immune responses are involved in neuronal damage and regeneration, as reviewed here, will be essential to develop effective therapies to improve quality of life, and mitigate the personal, economic and social impact of these diseases.
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Affiliation(s)
- Sandra Amor
- Department of Pathology, VU University Medical Centre, Amsterdam, the Netherlands; Neuroimmunology Unit, Blizard Institute of Cell and Molecular Science, Barts and The London School of Medicine and Dentistry, London, UK
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12
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Sabag AD, Smolkin T, Mumblat Y, Ueffing M, Kessler O, Gloeckner CJ, Neufeld G. The role of the plexin-A2 receptor in semaphorin-3A and semaphorin-3B signal transduction. J Cell Sci 2014; 127:5240-52. [DOI: 10.1242/jcs.155960] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Class-3 semaphorins are anti-angiogenic and anti-tumorigenic guidance factors that bind to neuropilins which in turn associate with class-A plexins to transduce semaphorin signals. To study the role of the plexin-A2 receptor in semaphorin signaling, we silenced its expression in endothelial cells and in glioblastoma cells. The silencing did not affect sema3A signaling which depended on neuropilin-1, plexin-A1 and plexin-A4, but abolished completely sema3B signaling which required in addition plexin-A4 and one of the two neuropilins. Interestingly, over-expression of plexin-A2 in plexin-A1 or plexin-A4 silenced cells restored responses to both semaphorins although it nullified their ability to differentiate between them, suggesting that when over-expressed plexin-A2 is functionally interchangeable with other class-A plexins. In-contrast, although plexin-A4 over-expression restored sema3A signaling in plexin-A1 silenced cells, it failed to restore sema3B signaling in plexin-A2 silenced cells. It follows that the identity of plexins in functional semaphorin receptors can be flexible depending on their expression level. Our results suggest that changes in the expression of plexins induced by microenvironmental cues can trigger differential responses of different populations of migrating cells to encountered gradients of semaphorins.
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Okada A, Tomooka Y. A role of Sema6A expressed in oligodendrocyte precursor cells. Neurosci Lett 2013; 539:48-53. [DOI: 10.1016/j.neulet.2013.01.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 12/28/2012] [Accepted: 01/17/2013] [Indexed: 12/17/2022]
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Possible roles of Plexin-A4 in positioning of oligodendrocyte precursor cells in developing cerebral cortex. Neurosci Lett 2012; 516:259-64. [DOI: 10.1016/j.neulet.2012.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 03/26/2012] [Accepted: 04/02/2012] [Indexed: 12/29/2022]
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Fernández-Gamba A, Leal MC, Maarouf CL, Richter-Landsberg C, Wu T, Morelli L, Roher AE, Castaño EM. Collapsin response mediator protein-2 phosphorylation promotes the reversible retraction of oligodendrocyte processes in response to non-lethal oxidative stress. J Neurochem 2012; 121:985-95. [PMID: 22443207 DOI: 10.1111/j.1471-4159.2012.07742.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The extension of processes of oligodendrocyte (OLG) and their precursor cells are crucial for migration, axonal contact and myelination. Here we show that a non-lethal oxidative stress induced by 3-nitropropionic acid (3-NP) elicited a rapid shortening of processes (~24%) in primary OLGs and in oligodendroglial cell line (OLN-93) cells (~36%) as compared with vehicle-exposed cells. This was reversible and prevented by antioxidants. Proteomics of OLG lysates with and without 3-NP treatment yielded collapsin response mediator protein 2 (CRMP-2) as a candidate effector molecule. Inhibition of rho kinase was sufficient to prevent process retraction in both OLGs and OLN-93 cells. Oxidative stress increased phosphorylation of CRMP-2 at T555 that was completely prevented by Y27632. Moreover, transfection of OLN-93 cells with the mutant CRMP-2 T555A which cannot be phosphorylated by rho kinase, prevented process shortening induced by 3-NP as compared with wild-type CRMP-2. Our results suggest a role for endogenous reactive oxygen species in a pathway that regulates OLG process extension. The vulnerability of late myelinated neurons in the adult brain and the presence of white matter pathology in human dementias warrant the study of this oligodendroglial pathway in the early stages of neurodegenerative conditions characterized by oxidative stress.
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Affiliation(s)
- Agata Fernández-Gamba
- Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires, CONICET, Buenos Aires, Argentina
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Gutekunst CA, Stewart EN, Franz CK, English AW, Gross RE. PlexinA4 distribution in the adult rat spinal cord and dorsal root ganglia. J Chem Neuroanat 2012; 44:1-13. [PMID: 22465808 DOI: 10.1016/j.jchemneu.2012.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 02/29/2012] [Accepted: 03/15/2012] [Indexed: 11/24/2022]
Abstract
PlexinsA1-A4 participate in class 3 semaphorin signaling as co-receptors to neuropilin 1 and 2, PlexinA4 being the latest member of the PlexinA subfamily to be identified. Little is known about the cellular distribution of PlexinA4 in the spinal cord and dorsal root ganglion (DRG). Here, immunohistochemical studies using antibodies to PlexinA4 revealed immunolabeling in neurons in both dorsal and, to a greater extent, ventral horns of the spinal cord. Ventral horn PlexinA4 positive neurons exhibited morphology, size, and location consistent with both motor neurons and interneurons. Labeling was found in motor axons exiting through the ventral roots, and more widespread labeling was observed in ascending and descending white matter tracts. Within the DRG, immunostaining was observed in neuronal cell bodies as well as the central and peripheral processes of these cells. PlexinA4 is expressed in the peripheral nervous system where its expression is regulated upon nerve injury. This is the first detailed description of the cellular and subcellular distribution of PlexinA4 in the adult spinal cord and DRG, and it will set the basis for future studies on the potential role of PlexinA4 in regeneration and repair of the adult central and peripheral nervous system.
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Affiliation(s)
- Claire-Anne Gutekunst
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA 30322, USA.
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Piaton G, Aigrot MS, Williams A, Moyon S, Tepavcevic V, Moutkine I, Gras J, Matho KS, Schmitt A, Soellner H, Huber AB, Ravassard P, Lubetzki C. Class 3 semaphorins influence oligodendrocyte precursor recruitment and remyelination in adult central nervous system. ACTA ACUST UNITED AC 2011; 134:1156-67. [PMID: 21421691 DOI: 10.1093/brain/awr022] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oligodendrocyte precursor cells, which persist in the adult central nervous system, are the main source of central nervous system remyelinating cells. In multiple sclerosis, some demyelinated plaques exhibit an oligodendroglial depopulation, raising the hypothesis of impaired oligodendrocyte precursor cell recruitment. Developmental studies identified semaphorins 3A and 3F as repulsive and attractive guidance cues for oligodendrocyte precursor cells, respectively. We previously reported their increased expression in experimental demyelination and in multiple sclerosis. Here, we show that adult oligodendrocyte precursor cells, like their embryonic counterparts, express class 3 semaphorin receptors, neuropilins and plexins and that neuropilin expression increases after demyelination. Using gain and loss of function experiments in an adult murine demyelination model, we demonstrate that semaphorin 3A impairs oligodendrocyte precursor cell recruitment to the demyelinated area. In contrast, semaphorin 3F overexpression accelerates not only oligodendrocyte precursor cell recruitment, but also remyelination rate. These data open new avenues to understand remyelination failure and promote repair in multiple sclerosis.
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Affiliation(s)
- Gabrièle Piaton
- Université Pierre et Marie Curie, Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), UMRS 975; Inserm U 975; CNRS, UMR 7225; Paris 75013, France
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Gutekunst CA, Stewart EN, Gross RE. Immunohistochemical Distribution of PlexinA4 in the Adult Rat Central Nervous System. Front Neuroanat 2010; 4. [PMID: 20700382 PMCID: PMC2914526 DOI: 10.3389/fnana.2010.00025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2009] [Accepted: 05/16/2010] [Indexed: 12/29/2022] Open
Abstract
PlexinA4 is the latest member to be identified of the PlexinA subfamily, critical transducers of class 3 semaphorin signaling as co-receptors to neuropilins 1 and 2. Despite functional information regarding the role of PlexinA4 in development and guidance of specific neuronal pathways, little is known about its distribution in the adult central nervous system (CNS). Here we report an in depth immunohistochemical analysis of PlexinA4 expression in the adult rat CNS. PlexinA4 staining was present in neurons and fibers throughout the brain and spinal cord, including neocortex, hippocampus, lateral hypothalamus, red nucleus, facial nucleus, and the mesencephalic trigeminal nucleus. PlexinA4 antibodies labeled fibers in the lateral septum, nucleus accumbens, several thalamic nuclei, substantia nigra pars reticulata, zona incerta, pontine reticular region, as well as in several cranial nerve nuclei. This constitutes the first detailed description of the topographic distribution of PlexinA4 in the adult CNS and will set the basis for future studies on the functional implications of PlexinA4 in adult brain physiology.
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