1
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Hernandez-Morato I, Koss S, Honzel E, Pitman MJ. Netrin-1 as A neural guidance protein in development and reinnervation of the larynx. Ann Anat 2024; 254:152247. [PMID: 38458575 DOI: 10.1016/j.aanat.2024.152247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 02/01/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Abstract
Neural guidance proteins participate in motor neuron migration, axonal projection, and muscle fiber innervation during development. One of the guidance proteins that participates in axonal pathfinding is Netrin-1. Despite the well-known role of Netrin-1 in embryogenesis of central nervous tissue, it is still unclear how the expression of this guidance protein contributes to primary innervation of the periphery, as well as reinnervation. This is especially true in the larynx where Netrin-1 is upregulated within the intrinsic laryngeal muscles after nerve injury and where blocking of Netrin-1 alters the pattern of reinnervation of the intrinsic laryngeal muscles. Despite this consistent finding, it is unknown how Netrin-1 expression contributes to guidance of the axons towards the larynx. Improved knowledge of Netrin-1's role in nerve regeneration and reinnervation post-injury in comparison to its role in primary innervation during embryological development, may provide insights in the search for therapeutics to treat nerve injury. This paper reviews the known functions of Netrin-1 during the formation of the central nervous system and during cranial nerve primary innervation. It also describes the role of Netrin-1 in the formation of the larynx and during recurrent laryngeal reinnervation following nerve injury in the adult.
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Affiliation(s)
- Ignacio Hernandez-Morato
- Department of Otolaryngology-Head & Neck Surgery, The Center for Voice and Swallowing, Columbia University College of Physicians and Surgeons, New York, NY, United States; Department of Anatomy and Embryology, School of Medicine, Complutense University of Madrid, Madrid, Madrid, Spain.
| | - Shira Koss
- ENT Associates of Nassau County, Levittown, NY, United States
| | - Emily Honzel
- Department of Otolaryngology-Head & Neck Surgery, The Center for Voice and Swallowing, Columbia University College of Physicians and Surgeons, New York, NY, United States
| | - Michael J Pitman
- Department of Otolaryngology-Head & Neck Surgery, The Center for Voice and Swallowing, Columbia University College of Physicians and Surgeons, New York, NY, United States
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2
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Dailey-Krempel B, Martin AL, Jo HN, Junge HJ, Chen Z. A tug of war between DCC and ROBO1 signaling during commissural axon guidance. Cell Rep 2023; 42:112455. [PMID: 37149867 DOI: 10.1016/j.celrep.2023.112455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 03/07/2023] [Accepted: 04/14/2023] [Indexed: 05/09/2023] Open
Abstract
Dynamic and coordinated axonal responses to changing environments are critical for establishing neural connections. As commissural axons migrate across the CNS midline, they are suggested to switch from being attracted to being repelled in order to approach and to subsequently leave the midline. A molecular mechanism that is hypothesized to underlie this switch in axonal responses is the silencing of Netrin1/Deleted in Colorectal Carcinoma (DCC)-mediated attraction by the repulsive SLIT/ROBO1 signaling. Using in vivo approaches including CRISPR-Cas9-engineered mouse models of distinct Dcc splice isoforms, we show here that commissural axons maintain responsiveness to both Netrin and SLIT during midline crossing, although likely at quantitatively different levels. In addition, full-length DCC in collaboration with ROBO3 can antagonize ROBO1 repulsion in vivo. We propose that commissural axons integrate and balance the opposing DCC and Roundabout (ROBO) signaling to ensure proper guidance decisions during midline entry and exit.
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Affiliation(s)
| | - Andrew L Martin
- Department of Neuroscience, University of Minnesota, Minneapolis, MN 55455, USA
| | - Ha-Neul Jo
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, MN 55455, USA
| | - Harald J Junge
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, MN 55455, USA
| | - Zhe Chen
- Department of Neuroscience, University of Minnesota, Minneapolis, MN 55455, USA.
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3
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Vieira JR, Shah B, Dupraz S, Paredes I, Himmels P, Schermann G, Adler H, Motta A, Gärtner L, Navarro-Aragall A, Ioannou E, Dyukova E, Bonnavion R, Fischer A, Bonanomi D, Bradke F, Ruhrberg C, Ruiz de Almodóvar C. Endothelial PlexinD1 signaling instructs spinal cord vascularization and motor neuron development. Neuron 2022; 110:4074-4089.e6. [PMID: 36549270 PMCID: PMC9796814 DOI: 10.1016/j.neuron.2022.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 11/04/2022] [Accepted: 12/03/2022] [Indexed: 12/24/2022]
Abstract
How the vascular and neural compartment cooperate to achieve such a complex and highly specialized structure as the central nervous system is still unclear. Here, we reveal a crosstalk between motor neurons (MNs) and endothelial cells (ECs), necessary for the coordinated development of MNs. By analyzing cell-to-cell interaction profiles of the mouse developing spinal cord, we uncovered semaphorin 3C (Sema3C) and PlexinD1 as a communication axis between MNs and ECs. Using cell-specific knockout mice and in vitro assays, we demonstrate that removal of Sema3C in MNs, or its receptor PlexinD1 in ECs, results in premature and aberrant vascularization of MN columns. Those vascular defects impair MN axon exit from the spinal cord. Impaired PlexinD1 signaling in ECs also causes MN maturation defects at later stages. This study highlights the importance of a timely and spatially controlled communication between MNs and ECs for proper spinal cord development.
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Affiliation(s)
- José Ricardo Vieira
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany,Faculty of Biosciences, Heidelberg University, Im Neuenheimer 234, 69120 Heidelberg, Germany
| | - Bhavin Shah
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany
| | - Sebastian Dupraz
- Institute for Neurovascular Cell Biology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Isidora Paredes
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany,Faculty of Biosciences, Heidelberg University, Im Neuenheimer 234, 69120 Heidelberg, Germany
| | - Patricia Himmels
- Faculty of Biosciences, Heidelberg University, Im Neuenheimer 234, 69120 Heidelberg, Germany
| | - Géza Schermann
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany,Institute for Neurovascular Cell Biology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Heike Adler
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany
| | - Alessia Motta
- San Raffaele Scientific Institute, Division of Neuroscience, via Olgettina 60, 20132 Milan, Italy
| | - Lea Gärtner
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany
| | - Ariadna Navarro-Aragall
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, EC1V 9EL London, UK
| | - Elena Ioannou
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, EC1V 9EL London, UK
| | - Elena Dyukova
- Max-Planck-Institute for Heart and Lung Research, Ludwigstr. 43, 61231 Bad Nauheim, Germany
| | - Remy Bonnavion
- Max-Planck-Institute for Heart and Lung Research, Ludwigstr. 43, 61231 Bad Nauheim, Germany
| | - Andreas Fischer
- Department of Clinical Chemistry, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075 Göttingen, Germany,Division Vascular Signaling and Cancer, German Cancer Research Center Heidelberg, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Dario Bonanomi
- San Raffaele Scientific Institute, Division of Neuroscience, via Olgettina 60, 20132 Milan, Italy
| | - Frank Bradke
- Laboratory of Axon Growth and Regeneration, German Center for Neurodegenerative Diseases (DZNE), Venusberg Campus 1/99, 53127 Bonn, Germany
| | - Christiana Ruhrberg
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, EC1V 9EL London, UK
| | - Carmen Ruiz de Almodóvar
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany; Institute for Neurovascular Cell Biology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; Schlegel Chair for Neurovascular Cell Biology, University of Bonn, Venusberg-Campus 1, 53127 Bonn, Germany.
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4
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Ying Z, Wu J, Jiang W, Zhang G, Zhu W, Li X, Pang X, Liu W. Expression of Slit and Robo during remodeling of corticospinal tract in cervical spinal cord in middle cerebral artery occlusion rats. Mol Biol Rep 2021; 48:7831-7839. [PMID: 34652618 DOI: 10.1007/s11033-021-06803-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 09/22/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Slits and Robos were associated with the generation of axons of corticospinal tract during the corticospinal tract (CST) remodeling after the cerebral ischemic stroke (CIS). However, little is known about the mechanism of CST remodeling. In this study, we detected the expression of Slits and Robos in middle cerebral artery occlusion (MCAO) rats to investigate the roles of Slits and Robos in the CIS. METHODS MCAO model was established using modified Zea Longa method. Beam walking test (BWT) was conducted to evaluate the motor function. The images of the track of cortical spinal cord beam on day 7, 14 and 21 were observed by anterograde CST tracing. Biopinylated dextan amine (BDA) was used to mark CST anterogradely. Expression of GAP-43 mRNA and GAP-43 protein in cervical spinal cord was detected by Real-Time PCR and Western blot analysis, respectively. The expression of Slit1, Slit2 and Robo1 in cervical spinal cord was detected by immunofluorescence staining. RESULTS The scores in the model group were significantly reduced compared to sham-operation group on day 7 (P < 0.001), 14 (P < 0.001) and 21 (P < 0.001), respectively. There was no significant difference in the score on day 7, 14 and 21 of the sham-operation groups (P > 0.05). In contrast, significant increase was noticed in the scores in model group, presenting a time-dependent manner. More CST staining fibers could be observed at the degenerative side in the model group compared with that of the sham-operation group on day 21. GAP-43 mRNA expression in the model group showed significant increase compared to that of sham-operation group on day 14 (P = 0.015) and 21 days (P = 0.002). The expression of GAP-43 protein in model group showed significant increase compared to that of sham-operation group on day 14 (P = 0.022) and day 21 (P = 0.008), respectively. The expression of Slit1 and Slit2 showed increase on day 14 and day 21, while the expression of Robo1 showed significant decrease in MCAO rats. CONCLUSION Up-regulation of Slit1 and Slit2 and the downregulation of Robo1 may be related to the axons of CST midline crossing in spinal cord of MCAO rat during the spontaneous recovery of impaired motor function.
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Affiliation(s)
- Zhenhao Ying
- School of Rehabilitation Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Junxuan Wu
- School of Rehabilitation Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Wenjun Jiang
- Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases, Jinan, 250002, China
| | - Guoli Zhang
- Department of Radiation Oncology, Shandong Tumor Hospital & Institute, Jinan, 250117, Shandong Province, China
| | - Weiming Zhu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300381, China
| | - Xin Li
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250011, China
| | - Xueyun Pang
- Juxian Hospital of Traditional Chinese Medicine, Rizhao, 276599, China
| | - Wei Liu
- Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250001, China.
- Department of Cerebral Disease, Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250001, China.
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5
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Lualdi M, Shafique A, Pedrini E, Pieroni L, Greco V, Castagnola M, Cucina G, Corrado L, Di Pierro A, De Marchi F, Camillo L, Colombrita C, D’Anca M, Alberio T, D’Alfonso S, Fasano M. C9ORF72 Repeat Expansion Affects the Proteome of Primary Skin Fibroblasts in ALS. Int J Mol Sci 2021; 22:ijms221910385. [PMID: 34638725 PMCID: PMC8508815 DOI: 10.3390/ijms221910385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/17/2021] [Accepted: 09/22/2021] [Indexed: 12/16/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by progressive degeneration of the corticospinal motor neurons, which ultimately leads to death. The repeat expansion in chromosome 9 open reading frame 72 (C9ORF72) represents the most common genetic cause of ALS and it is also involved in the pathogenesis of other neurodegenerative disorders. To offer insights into C9ORF72-mediated pathogenesis, we quantitatively analyzed the proteome of patient-derived primary skin fibroblasts from ALS patients carrying the C9ORF72 mutation compared with ALS patients who tested negative for it. Differentially expressed proteins were identified, used to generate a protein-protein interaction network and subjected to a functional enrichment analysis to unveil altered molecular pathways. ALS patients were also compared with patients affected by frontotemporal dementia carrying the C9ORF72 repeat expansion. As a result, we demonstrated that the molecular pathways mainly altered in fibroblasts (e.g., protein homeostasis) mirror the alterations observed in C9ORF72-mutated neurons. Moreover, we highlighted novel molecular pathways (nuclear and mitochondrial transports, vesicle trafficking, mitochondrial bioenergetics, glucose metabolism, ER-phagosome crosstalk and Slit/Robo signaling pathway) which might be further investigated as C9ORF72-specific pathogenetic mechanisms. Data are available via ProteomeXchange with the identifier PXD023866.
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Affiliation(s)
- Marta Lualdi
- Biochemistry and Functional Proteomics Laboratory, Department of Science and High Technology, Center of Bioinformatics and Center of Neuroscience, University of Insubria, I-21052 Busto Arsizio, Italy; (A.S.); (E.P.); (G.C.); (T.A.); (M.F.)
- Correspondence: ; Tel.: +39-0331-339-414
| | - Adeena Shafique
- Biochemistry and Functional Proteomics Laboratory, Department of Science and High Technology, Center of Bioinformatics and Center of Neuroscience, University of Insubria, I-21052 Busto Arsizio, Italy; (A.S.); (E.P.); (G.C.); (T.A.); (M.F.)
| | - Edoardo Pedrini
- Biochemistry and Functional Proteomics Laboratory, Department of Science and High Technology, Center of Bioinformatics and Center of Neuroscience, University of Insubria, I-21052 Busto Arsizio, Italy; (A.S.); (E.P.); (G.C.); (T.A.); (M.F.)
| | - Luisa Pieroni
- Proteomics and Metabolomic Laboratory, Experimental Neuroscience Department, S. Lucia Foundation IRCCS, I-00168 Rome, Italy; (L.P.); (M.C.)
| | - Viviana Greco
- Department of Basic Biotechnological Sciences, Intensivological and Perioperative Clinics, Università Cattolica del Sacro Cuore, I-00168 Rome, Italy;
- Molecular and Genomic Diagnostics Unit, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, I-00168 Rome, Italy
| | - Massimo Castagnola
- Proteomics and Metabolomic Laboratory, Experimental Neuroscience Department, S. Lucia Foundation IRCCS, I-00168 Rome, Italy; (L.P.); (M.C.)
| | - Giorgia Cucina
- Biochemistry and Functional Proteomics Laboratory, Department of Science and High Technology, Center of Bioinformatics and Center of Neuroscience, University of Insubria, I-21052 Busto Arsizio, Italy; (A.S.); (E.P.); (G.C.); (T.A.); (M.F.)
| | - Lucia Corrado
- Department of Health Sciences, University of Eastern Piedmont “A. Avogadro”, I-28100 Novara, Italy; (L.C.); (A.D.P.); (L.C.); (S.D.)
| | - Alice Di Pierro
- Department of Health Sciences, University of Eastern Piedmont “A. Avogadro”, I-28100 Novara, Italy; (L.C.); (A.D.P.); (L.C.); (S.D.)
| | - Fabiola De Marchi
- Department of Translational Medicine, University of Eastern Piedmont “A. Avogadro”, I-28100 Novara, Italy;
- Department of Neurology and ALS Centre, “Maggiore della Carità” Hospital, I-28100 Novara, Italy
| | - Lara Camillo
- Department of Health Sciences, University of Eastern Piedmont “A. Avogadro”, I-28100 Novara, Italy; (L.C.); (A.D.P.); (L.C.); (S.D.)
| | - Claudia Colombrita
- Department of Neurology-Stroke Unit and Laboratory of Neuroscience, Istituto Auxologico Italiano IRCCS, I-20149 Milan, Italy;
| | - Marianna D’Anca
- Neurodegenerative Disease Unit, Fondazione Ca’ Granda IRCCS, Policlinico Hospital, I-20122 Milan, Italy;
| | - Tiziana Alberio
- Biochemistry and Functional Proteomics Laboratory, Department of Science and High Technology, Center of Bioinformatics and Center of Neuroscience, University of Insubria, I-21052 Busto Arsizio, Italy; (A.S.); (E.P.); (G.C.); (T.A.); (M.F.)
| | - Sandra D’Alfonso
- Department of Health Sciences, University of Eastern Piedmont “A. Avogadro”, I-28100 Novara, Italy; (L.C.); (A.D.P.); (L.C.); (S.D.)
| | - Mauro Fasano
- Biochemistry and Functional Proteomics Laboratory, Department of Science and High Technology, Center of Bioinformatics and Center of Neuroscience, University of Insubria, I-21052 Busto Arsizio, Italy; (A.S.); (E.P.); (G.C.); (T.A.); (M.F.)
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6
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Dorskind JM, Kolodkin AL. Revisiting and refining roles of neural guidance cues in circuit assembly. Curr Opin Neurobiol 2021; 66:10-21. [PMID: 32823181 PMCID: PMC10725571 DOI: 10.1016/j.conb.2020.07.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/16/2020] [Accepted: 07/27/2020] [Indexed: 12/14/2022]
Abstract
Neural guidance mechanisms ensure the precise targeting and synaptogenesis events essential for normal circuit function. Neuronal growth cones encounter numerous attractive and repulsive cues as they navigate toward their intermediate and final targets; temporal and spatial regulation of these responses are critical for circuit assembly. Recent work highlights the complexity of these events throughout neural development and the multifaceted functions of a wide range of guidance cues. Here, we discuss recent studies that leverage advances in genetics, single cell tracing, transcriptomics and proteomics to further our understanding of the molecular mechanisms underlying neural guidance and overall circuit organization.
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Affiliation(s)
- Joelle M Dorskind
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Alex L Kolodkin
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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7
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Suter TACS, Blagburn SV, Fisher SE, Anderson-Keightly HM, D'Elia KP, Jaworski A. TAG-1 Multifunctionality Coordinates Neuronal Migration, Axon Guidance, and Fasciculation. Cell Rep 2020; 30:1164-1177.e7. [PMID: 31995756 PMCID: PMC7049094 DOI: 10.1016/j.celrep.2019.12.085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 10/25/2019] [Accepted: 12/22/2019] [Indexed: 11/03/2022] Open
Abstract
Neuronal migration, axon fasciculation, and axon guidance need to be closely coordinated for neural circuit assembly. Spinal motor neurons (MNs) face unique challenges during development because their cell bodies reside within the central nervous system (CNS) and their axons project to various targets in the body periphery. The molecular mechanisms that contain MN somata within the spinal cord while allowing their axons to exit the CNS and navigate to their final destinations remain incompletely understood. We find that the MN cell surface protein TAG-1 anchors MN cell bodies in the spinal cord to prevent their emigration, mediates motor axon fasciculation during CNS exit, and guides motor axons past dorsal root ganglia. TAG-1 executes these varied functions in MN development independently of one another. Our results identify TAG-1 as a key multifunctional regulator of MN wiring that coordinates neuronal migration, axon fasciculation, and axon guidance. Suter et al. demonstrate that the motor neuron cell surface molecule TAG-1 confines motor neurons to the central nervous system, promotes motor axon fasciculation, and steers motor axons past inappropriate targets. This study highlights how a single cell adhesion molecule coordinates multiple steps in neuronal wiring through partially divergent mechanisms.
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Affiliation(s)
- Tracey A C S Suter
- Department of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USA
| | - Sara V Blagburn
- Department of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USA
| | - Sophie E Fisher
- Department of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USA
| | | | - Kristen P D'Elia
- Department of Neuroscience, Brown University, Providence, RI 02912, USA; Department of Biology, Providence College, Providence, RI 02918, USA
| | - Alexander Jaworski
- Department of Neuroscience, Brown University, Providence, RI 02912, USA; Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USA.
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8
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Liu F, Gong B, Gu Q, Liu S, Fogle CM, Patterson TA, Hanig JP, Slikker W, Wang C. Application of microRNA profiling to understand sevoflurane-induced adverse effects on developing monkey brain. Neurotoxicology 2020; 81:172-179. [PMID: 33045284 DOI: 10.1016/j.neuro.2020.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 10/06/2020] [Accepted: 10/06/2020] [Indexed: 02/06/2023]
Abstract
We have described that prolonged sevoflurane exposure at a clinically-relevant concentration of 2.5 % caused neuronal cell death in the developing monkey brain. Postnatal day 5 or 6 rhesus monkeys (n = 3) were exposed to 2.5 % sevoflurane for 8 h. Monkeys kept at environmental conditions in the procedure room served as controls (n = 3). Brain tissues were harvested four hours after sevoflurane exposure for histological analysis, and RNA or protein extraction. MicroRNA (miRNA) profiling on the frontal cortex of monkey brains was performed using next-generation sequencing. 417 miRNAs were identified in the frontal cortex, where most neuronal cell death was observed. 7 miRNAs were differentially expressed in frontal cortex after sevoflurane exposure. Five of these were expressed at significantly lower levels than controls and the other two miRNAs were expressed significantly higher. These differentially expressed miRNAs (DEMs) were then loaded to the Ingenuity Pathway Analysis database for pathway analysis, in which targeting information was available for 5 DEMs. The 5 DEMs target 2,919 mRNAs which are involved in pathways that contribute to various cellular functions. Of note, 78 genes that are related to axon guidance signaling were targeted, suggesting that development of the neural circuit may be affected after sevoflurane exposure. Such changes may have long-term effects on brain development and function. These findings are supplementary to our previous observations and provide more evidence for better understanding the adverse effects of sevoflurane on the developing brain after an 8 -h exposure.
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Affiliation(s)
- Fang Liu
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, United States.
| | - Binsheng Gong
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research/FDA, Jefferson, AR, United States
| | - Qiang Gu
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, United States
| | - Shuliang Liu
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, United States
| | - Charles Matthew Fogle
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, United States
| | - Tucker A Patterson
- Office of Director, National Center for Toxicological Research/FDA, Jefferson, AR, United States
| | - Joseph P Hanig
- Office of Pharmaceutical Quality, Center for Drug Evaluation and Research/FDA, Silver Spring, MD, United States
| | - William Slikker
- Office of Director, National Center for Toxicological Research/FDA, Jefferson, AR, United States
| | - Cheng Wang
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, United States.
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9
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Suter TACS, Jaworski A. Cell migration and axon guidance at the border between central and peripheral nervous system. Science 2020; 365:365/6456/eaaw8231. [PMID: 31467195 DOI: 10.1126/science.aaw8231] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/22/2019] [Indexed: 12/13/2022]
Abstract
The central and peripheral nervous system (CNS and PNS, respectively) are composed of distinct neuronal and glial cell types with specialized functional properties. However, a small number of select cells traverse the CNS-PNS boundary and connect these two major subdivisions of the nervous system. This pattern of segregation and selective connectivity is established during embryonic development, when neurons and glia migrate to their destinations and axons project to their targets. Here, we provide an overview of the cellular and molecular mechanisms that control cell migration and axon guidance at the vertebrate CNS-PNS border. We highlight recent advances on how cell bodies and axons are instructed to either cross or respect this boundary, and present open questions concerning the development and plasticity of the CNS-PNS interface.
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Affiliation(s)
- Tracey A C S Suter
- Department of Neuroscience, Division of Biology and Medicine, Brown University, Providence, RI 02912, USA.,Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USA
| | - Alexander Jaworski
- Department of Neuroscience, Division of Biology and Medicine, Brown University, Providence, RI 02912, USA. .,Robert J. and Nancy D. Carney Institute for Brain Science, Providence, RI 02912, USA
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10
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Abstract
The spinal cord receives, relays and processes sensory information from the periphery and integrates this information with descending inputs from supraspinal centres to elicit precise and appropriate behavioural responses and orchestrate body movements. Understanding how the spinal cord circuits that achieve this integration are wired during development is the focus of much research interest. Several families of proteins have well-established roles in guiding developing spinal cord axons, and recent findings have identified new axon guidance molecules. Nevertheless, an integrated view of spinal cord network development is lacking, and many current models have neglected the cellular and functional diversity of spinal cord circuits. Recent advances challenge the existing spinal cord axon guidance dogmas and have provided a more complex, but more faithful, picture of the ontogenesis of vertebrate spinal cord circuits.
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11
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Schellino R, Boido M, Vercelli A. JNK Signaling Pathway Involvement in Spinal Cord Neuron Development and Death. Cells 2019; 8:cells8121576. [PMID: 31817379 PMCID: PMC6953032 DOI: 10.3390/cells8121576] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 12/14/2022] Open
Abstract
The c-Jun NH2-terminal protein kinase (JNK) is a Janus-faced kinase, which, in the nervous system, plays important roles in a broad range of physiological and pathological processes. Three genes, encoding for 10 JNK isoforms, have been identified: jnk1, jnk2, and jnk3. In the developing spinal cord, JNK proteins control neuronal polarity, axon growth/pathfinding, and programmed cell death; in adulthood they can drive degeneration and regeneration, after pathological insults. Indeed, recent studies have highlighted a role for JNK in motor neuron (MN) diseases, such as amyotrophic lateral sclerosis and spinal muscular atrophy. In this review we discuss how JNK-dependent signaling regulates apparently contradictory functions in the spinal cord, in both the developmental and adult stages. In addition, we examine the evidence that the specific targeting of JNK signaling pathway may represent a promising therapeutic strategy for the treatment of MN diseases.
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Affiliation(s)
- Roberta Schellino
- Department of Neuroscience Rita Levi Montalcini, University of Turin, 10126 Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, University of Turin, 10043 Orbassano (TO), Italy
- Correspondence: ; Tel.: +39-011-670-6632
| | - Marina Boido
- Department of Neuroscience Rita Levi Montalcini, University of Turin, 10126 Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, University of Turin, 10043 Orbassano (TO), Italy
- National Institute of Neuroscience (INN), 10125 Turin, Italy
| | - Alessandro Vercelli
- Department of Neuroscience Rita Levi Montalcini, University of Turin, 10126 Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, University of Turin, 10043 Orbassano (TO), Italy
- National Institute of Neuroscience (INN), 10125 Turin, Italy
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12
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Kim M, Lee CH, Barnum SJ, Watson RC, Li J, Mastick GS. Slit/Robo signals prevent spinal motor neuron emigration by organizing the spinal cord basement membrane. Dev Biol 2019; 455:449-457. [PMID: 31356769 PMCID: PMC6842423 DOI: 10.1016/j.ydbio.2019.07.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/24/2019] [Accepted: 07/24/2019] [Indexed: 01/30/2023]
Abstract
The developing spinal cord builds a boundary between the CNS and the periphery, in the form of a basement membrane. The spinal cord basement membrane is a barrier that retains CNS neuron cell bodies, while being selectively permeable to specific axon types. Spinal motor neuron cell bodies are located in the ventral neural tube next to the floor plate and project their axons out through the basement membrane to peripheral targets. However, little is known about how spinal motor neuron cell bodies are retained inside the ventral neural tube, while their axons can exit. In previous work, we found that disruption of Slit/Robo signals caused motor neuron emigration outside the spinal cord. In the current study, we investigate how Slit/Robo signals are necessary to keep spinal motor neurons within the neural tube. Our findings show that when Slit/Robo signals were removed from motor neurons, they migrated outside the spinal cord. Furthermore, this emigration was associated with abnormal basement membrane protein expression in the ventral spinal cord. Using Robo2 and Slit2 conditional mutants, we found that motor neuron-derived Slit/Robo signals were required to set up a normal basement membrane in the spinal cord. Together, our results suggest that motor neurons produce Slit signals that are required for the basement membrane assembly to retain motor neuron cell bodies within the spinal cord.
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Affiliation(s)
- Minkyung Kim
- Department of Biology, University of Nevada, Reno, NV, 89557, USA.
| | - Clare H Lee
- Department of Biology, University of Nevada, Reno, NV, 89557, USA
| | - Sarah J Barnum
- Department of Biology, University of Nevada, Reno, NV, 89557, USA
| | - Roland Cj Watson
- Department of Biology, University of Nevada, Reno, NV, 89557, USA
| | - Jennifer Li
- Department of Biology, University of Nevada, Reno, NV, 89557, USA
| | - Grant S Mastick
- Department of Biology, University of Nevada, Reno, NV, 89557, USA
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13
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Tong M, Jun T, Nie Y, Hao J, Fan D. The Role of the Slit/Robo Signaling Pathway. J Cancer 2019; 10:2694-2705. [PMID: 31258778 PMCID: PMC6584916 DOI: 10.7150/jca.31877] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 04/28/2019] [Indexed: 12/25/2022] Open
Abstract
The Slit family is a family of secreted proteins that play important roles in various physiologic and pathologic activities via interacting with Robo receptors. Slit/Robo signaling was first identified in the nervous system, where it functions in neuronal axon guidance; nevertheless, an increasing number of studies have shown that Slit/Robo signaling even regulates other activities, such as angiogenesis, inflammatory cell chemotaxis, tumor cell migration and metastasis. Although the precise role of the ligand-receptor in organisms has been obscure and the conclusions drawn are sometimes paradoxical, tremendous advances in understanding the Slit/Robo signaling pathway have been made. As such, our review summarizes the characteristics of the Slit/Robo signaling pathway and its role in various cell types.
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Affiliation(s)
- Mingfu Tong
- Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China.,State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Tie Jun
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jianyu Hao
- Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Daiming Fan
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
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14
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Wang H, Zhou Y, Cong M, Zhang L, Gu X, Tang X. Comparative transcriptomic profiling of peripheral efferent and afferent nerve fibres at different developmental stages in mice. Sci Rep 2018; 8:11990. [PMID: 30097601 PMCID: PMC6086926 DOI: 10.1038/s41598-018-30463-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/31/2018] [Indexed: 12/22/2022] Open
Abstract
Peripheral nerve injury impairs motor and sensory function in humans, and its functional recovery largely depends on the axonal outgrowth required for the accurate reinnervation of appropriate targets. To better understand how motor and sensory nerve fibres select their terminal pathways, an unbiased cDNA microarray analysis was conducted to examine differential gene expression patterns in peripheral efferent and afferent fibres at different developmental stages in mice. Gene ontology (GO) and Kyoto Enrichment of Genes and Genomes (KEGG) analyses revealed common and distinct features of enrichment for differentially expressed genes during motor and sensory nerve fibre development. Ingenuity Pathway Analysis (IPA) further indicated that the key differentially expressed genes were associated with trans-synaptic neurexin-neuroligin signalling components and a variety of gamma-aminobutyric acid (GABA) receptors. The aim of this study was to generate a framework of gene networks regulated during motor and sensory neuron differentiation/maturation. These data may provide new clues regarding the underlying cellular and molecular mechanisms that determine the intrinsic capacity of neurons to regenerate after peripheral nerve injury. Our findings may thus facilitate further development of a potential intervention to manipulate the therapeutic efficiency of peripheral nerve repair in the clinic.
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Affiliation(s)
- Hongkui Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, JS, 226001, China
| | - Youlang Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, JS, 226001, China.,The Hand Surgery Research Center, Department of Hand Surgery, Affiliated Hospital of Nantong University, Nantong, JS, 226001, China
| | - Meng Cong
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, JS, 226001, China
| | - Li Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, JS, 226001, China
| | - Xiaosong Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, JS, 226001, China.
| | - Xin Tang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, JS, 226001, China.
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15
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Guidance of motor axons: where do we stand? CURRENT OPINION IN PHYSIOLOGY 2018. [DOI: 10.1016/j.cophys.2018.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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