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Nibuya M, Kezuka D, Kanno Y, Wakamatsu S, Suzuki E. Behavioral stress and antidepressant treatments altered hippocampal expression of Nogo signal-related proteins in rats. J Psychiatr Res 2024; 170:207-216. [PMID: 38157668 DOI: 10.1016/j.jpsychires.2023.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/26/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024]
Abstract
Some immune molecules including neurite outgrowth inhibitor (Nogo) ligands and their receptor(Nogo receptor-1: NgR1)are expressed at the neuronal synaptic sites. Paired immunoglobulin-like receptor B (PirB) is another Nogo receptor that also binds to major histocompatibility complex I and β-amyloid and suppresses dendritic immune cell functions and neuronal plasticity in the central nervous system. Augmenting structural and functional neural plasticity by manipulating the Nogo signaling pathway is a novel promising strategy for treating brain ischemia and degenerative processes such as Alzheimer's disease. In recent decades psychiatric research using experimental animals has focused on the attenuation of neural plasticity by stress loadings and on the enhanced resilience by psychopharmacological treatments. In the present study, we examined possible expressional alterations in Nogo signal-related proteins in the rat hippocampus after behavioral stress loadings and antidepressant treatments. To validate the effectiveness of the procedures, previously reported increase in brain-derived neurotrophic factor (BDNF) by ECS or ketamine administration and decrease of BDNF by stress loadings are also shown in the present study. Significant increases in hippocampal NgR1 and PirB expression were observed following chronic variable stress, and a significant increase in NgR1 expression was observed under a single prolonged stress paradigm. These results indicate a possible contribution of enhanced Nogo signaling to the attenuation of neural plasticity in response to stressful experiences. Additionally, the suppression of hippocampal NgR1 expression using electroconvulsive seizure treatment and administration of subanesthetic dose of ketamine supported the increased neural plasticity induced by the antidepressant treatments.
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Affiliation(s)
- Masashi Nibuya
- Division of Psychiatry, Tohoku Medical and Pharmaceutical University, 1-15-1 Fukumuro, Miyagino, Sendai City, Miyagi, 983-8536, Japan.
| | - Dai Kezuka
- Division of Psychiatry, Tohoku Medical and Pharmaceutical University, 1-15-1 Fukumuro, Miyagino, Sendai City, Miyagi, 983-8536, Japan
| | - Yoshihiko Kanno
- Division of Psychiatry, Tohoku Medical and Pharmaceutical University, 1-15-1 Fukumuro, Miyagino, Sendai City, Miyagi, 983-8536, Japan
| | - Shunosuke Wakamatsu
- Division of Psychiatry, Tohoku Medical and Pharmaceutical University, 1-15-1 Fukumuro, Miyagino, Sendai City, Miyagi, 983-8536, Japan
| | - Eiji Suzuki
- Division of Psychiatry, Tohoku Medical and Pharmaceutical University, 1-15-1 Fukumuro, Miyagino, Sendai City, Miyagi, 983-8536, Japan
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2
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Wang X, Yang Y, Zhao D, Zhang S, Chen Y, Chen Y, Feng K, Li X, Han J, Iwakiri Y, Duan Y, Yang X. Inhibition of high-fat diet-induced obesity via reduction of ER-resident protein Nogo occurs through multiple mechanisms. J Biol Chem 2022; 298:101561. [PMID: 34998825 PMCID: PMC8814669 DOI: 10.1016/j.jbc.2022.101561] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 12/18/2021] [Accepted: 12/22/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity is a risk factor for insulin resistance, type 2 diabetes, and cardiovascular diseases. Reticulon-4 (Nogo) is an endoplasmic reticulum–resident protein with unclear functions in obesity. Herein, we investigated the effect of Nogo on obesity and associated metabolic disorders. Human serum samples were collected to explore the relationship between circulating Nogo-B and body mass index value. Nogo-deficient and WT littermate control mice were fed normal chow or high-fat diet (HFD) for 14 weeks, and HFD-induced obese C57BL/6J mice were injected scrambled or Nogo siRNA for 2 weeks. We found that in human and mouse serum, Nogo-B was positively correlated to body mass index/bodyweight and lipid profiles. Reduced Nogo (by genetic deletion or siRNA transfection) protected mice against HFD-induced obesity and related metabolic disorders. We demonstrate that Nogo deficiency reversed HFD-induced whitening of brown adipose tissue, thereby increasing thermogenesis. It also ameliorated lipid accumulation in tissues by activating the adiponectin–adiponectin receptor 1–AMP-activated kinase α signaling axis. Finally, Nogo deficiency potently reduced HFD-induced serum proinflammatory cytokines and infiltration of macrophages into metabolic organs, which is related to enhanced NF-κB p65 degradation via the lysosome pathway. Collectively, our study suggests that reduced levels of Nogo protect mice against HFD-induced obesity by increasing thermogenesis and energy metabolism while inhibiting NF-κB-mediated inflammation. Our results indicate that inhibition of Nogo may be a potential strategy for obesity treatment.
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Affiliation(s)
- Xiaolin Wang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Yanfang Yang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Dan Zhao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Shuang Zhang
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Yi Chen
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Yuanli Chen
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Ke Feng
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Xiaoju Li
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Jihong Han
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China; Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Yasuko Iwakiri
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Yajun Duan
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China.
| | - Xiaoxiao Yang
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China.
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Parcerisas A, Ortega-Gascó A, Hernaiz-Llorens M, Odena MA, Ulloa F, de Oliveira E, Bosch M, Pujadas L, Soriano E. New Partners Identified by Mass Spectrometry Assay Reveal Functions of NCAM2 in Neural Cytoskeleton Organization. Int J Mol Sci 2021; 22:ijms22147404. [PMID: 34299022 PMCID: PMC8304497 DOI: 10.3390/ijms22147404] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 02/06/2023] Open
Abstract
Neuronal cell adhesion molecule 2 (NCAM2) is a membrane protein with an important role in the morphological development of neurons. In the cortex and the hippocampus, NCAM2 is essential for proper neuronal differentiation, dendritic and axonal outgrowth and synapse formation. However, little is known about NCAM2 functional mechanisms and its interactive partners during brain development. Here we used mass spectrometry to study the molecular interactome of NCAM2 in the second postnatal week of the mouse cerebral cortex. We found that NCAM2 interacts with >100 proteins involved in numerous processes, including neuronal morphogenesis and synaptogenesis. We validated the most relevant interactors, including Neurofilaments (NEFs), Microtubule-associated protein 2 (MAP2), Calcium/calmodulin kinase II alpha (CaMKIIα), Actin and Nogo. An in silico analysis of the cytosolic tail of the NCAM2.1 isoform revealed specific phosphorylation site motifs with a putative affinity for some of these interactors. Our results expand the knowledge of NCAM2 interactome and confirm the key role of NCAM2 in cytoskeleton organization, neuronal morphogenesis and synaptogenesis. These findings are of interest in explaining the phenotypes observed in different pathologies with alterations in the NCAM2 gene.
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Affiliation(s)
- Antoni Parcerisas
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- Department of Basic Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain;
- Correspondence: (A.P.); (E.S.)
| | - Alba Ortega-Gascó
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Marc Hernaiz-Llorens
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Maria Antonia Odena
- Plataforma de Proteòmica, Parc Científic de Barcelona (PCB), 08028 Barcelona, Spain; (M.A.O.); (E.d.O.)
| | - Fausto Ulloa
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Eliandre de Oliveira
- Plataforma de Proteòmica, Parc Científic de Barcelona (PCB), 08028 Barcelona, Spain; (M.A.O.); (E.d.O.)
| | - Miquel Bosch
- Department of Basic Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain;
| | - Lluís Pujadas
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Eduardo Soriano
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- Correspondence: (A.P.); (E.S.)
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Zhai J, Kim H, Han SB, Manire M, Yoo R, Pang S, Smith GM, Son YJ. Co-targeting myelin inhibitors and CSPGs markedly enhances regeneration of GDNF-stimulated, but not conditioning-lesioned, sensory axons into the spinal cord. eLife 2021; 10:63050. [PMID: 33942723 PMCID: PMC8139830 DOI: 10.7554/elife.63050] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 05/03/2021] [Indexed: 12/20/2022] Open
Abstract
A major barrier to intraspinal regeneration after dorsal root (DR) injury is the DR entry zone (DREZ), the CNS/PNS interface. DR axons stop regenerating at the DREZ, even if regenerative capacity is increased by a nerve conditioning lesion. This potent blockade has long been attributed to myelin-associated inhibitors and (CSPGs), but incomplete lesions and conflicting reports have prevented conclusive agreement. Here, we evaluated DR regeneration in mice using novel strategies to facilitate complete lesions and analyses, selective tracing of proprioceptive and mechanoreceptive axons, and the first simultaneous targeting of Nogo/Reticulon-4, MAG, OMgp, CSPGs, and GDNF. Co-eliminating myelin inhibitors and CSPGs elicited regeneration of only a few conditioning-lesioned DR axons across the DREZ. Their absence, however, markedly and synergistically enhanced regeneration of GDNF-stimulated axons, highlighting the importance of sufficiently elevating intrinsic growth capacity. We also conclude that myelin inhibitors and CSPGs are not the primary mechanism stopping axons at the DREZ.
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Affiliation(s)
- Jinbin Zhai
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
| | - Hyukmin Kim
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
| | - Seung Baek Han
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
| | - Meredith Manire
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
| | - Rachel Yoo
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
| | - Shuhuan Pang
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
| | - George M Smith
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
| | - Young-Jin Son
- Shriners Hospitals Pediatric Research Center and Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States.,Center for Neural Repair and Rehabilitation, Lewis Katz School of Medicine, Temple University, Philadelphia, United States
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Arvidsson E, Gabulya S, Brodin AT, Karlsson TE, Olson L. Forebrain NgR1 Overexpression Impairs DA Release Suggesting Synergy of Local and Global Synaptic Plasticity Mechanisms. Front Synaptic Neurosci 2020; 12:545854. [PMID: 33362526 PMCID: PMC7758427 DOI: 10.3389/fnsyn.2020.545854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 11/02/2020] [Indexed: 12/05/2022] Open
Abstract
Structural synaptic reorganizations needed to permanently embed novel memories in the brain involve complex plasticity-enhancing and plasticity-inhibiting systems. Increased neural activity is linked to rapid downregulation of Nogo receptor 1 (NgR1), needed to allow local structural synaptic plasticity. This local regulation of plasticity is thought to be moderated by global systems, such as the ascending cholinergic and monoaminergic systems, adding significance to locally increased neural activity. Here we address the reverse possibility that the global systems may also be influenced by the status of local plasticity. Using NgR1-overexpressing mice, with impaired plasticity and long-term memory, we measured the ability to release dopamine (DA), implicated in regulating plasticity and memory. In vivo chronoamperometric recording with high temporal and spatial resolution revealed severe impairment of potassium chloride (KCl)-induced increase of extracellular DA in the dorsal striatum of mice overexpressing NgR1 in forebrain neurons. A similar, but lesser, impairment of DA release was seen following amphetamine delivery. In contrast, potassium chloride-evoked DA release in NgR1 knockout (KO) mice led to increased levels of extracellular DA. That NgR1 can impair DA signaling, thereby further dampening synaptic plasticity, suggests a new role for NgR1 signaling, acting in synergy with DA signaling to control synaptic plasticity. Significance Statement:The inverse correlation between local NgR1 levels and magnitude of KCl-inducible amounts of DA release in the striatum reinforces the rule of NgR1 as a regulator of structural synaptic plasticity and suggests synergy between local and global plasticity regulating systems.
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Affiliation(s)
- Emma Arvidsson
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Sarolta Gabulya
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Alvin Tore Brodin
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | | | - Lars Olson
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
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Zhang S, Guo F, Yu M, Yang X, Yao Z, Li Q, Wei Z, Feng K, Zeng P, Zhao D, Li X, Zhu Y, Miao QR, Iwakiri Y, Chen Y, Han J, Duan Y. Reduced Nogo expression inhibits diet-induced metabolic disorders by regulating ChREBP and insulin activity. J Hepatol 2020; 73:1482-1495. [PMID: 32738448 DOI: 10.1016/j.jhep.2020.07.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 06/26/2020] [Accepted: 07/21/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND & AIMS Chronic overconsumption of a high-carbohydrate diet leads to steatosis and its associated metabolic disorder and, eventually, to non-alcoholic fatty liver disease. Carbohydrate-responsive element binding protein (ChREBP) and insulin regulate de novo lipogenesis from glucose. Herein, we studied the effect of reticulon-4 (Nogo) expression on diet-induced metabolic disorders in mice. METHODS Nogo-deficient (Nogo-/-) and littermate control [wild-type (WT)] mice were fed a high-glucose or high-fructose diet (HGD/HFrD) to induce metabolic disorders. The effects of Nogo small interfering (si) RNA (siRNA) on HFrD-induced metabolic disorders were investigated in C57BL/6J mice. RESULTS HGD/HFrD induced steatosis and its associated metabolic disorders in WT mice by activating ChREBP and impairing insulin sensitivity. They also activated Nogo-B expression, which in turn inhibited insulin activity. In response to HGD/HFrD feeding, Nogo deficiency enhanced insulin sensitivity and energy metabolism to reduce the expression of ChREBP and lipogenic molecules, activated AMP-activated catalytic subunit α, peroxisome proliferator activated receptor α and fibroblast growth factor 21, and reduced endoplasmic reticulum (ER) stress and inflammation, thereby blocking HGD/HFrD-induced hepatic lipid accumulation, insulin resistance and other metabolic disorders. Injection of Nogo siRNA protected C57BL/6J mice against HFrD-induced metabolic disorders by ameliorating insulin sensitivity, ChREBP activity, ER stress and inflammation. CONCLUSIONS Our study identified Nogo as an important mediator of insulin sensitivity and ChREBP activity. Reduction of Nogo expression is a potential strategy for the treatment of high-carbohydrate diet-induced metabolic complications. LAY SUMMARY Nogo deficiency blocks high-carbohydrate diet-induced glucose intolerance and insulin resistance, while increasing glucose/lipid utilisation and energy expenditure. Thus, reduction of Nogo expression protects against high-carbohydrate diet-induced body-weight gain, hepatic lipid accumulation and the associated metabolic disorders, indicating that approaches inhibiting Nogo expression can be applied for the treatment of diseases associated with metabolic disorders.
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Affiliation(s)
- Shuang Zhang
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China; College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Fangling Guo
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Miao Yu
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Xiaoxiao Yang
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Zhi Yao
- Tianjin Medical University, Tianjin, China
| | - Qi Li
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Zhuo Wei
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Ke Feng
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Peng Zeng
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Dan Zhao
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Xiaoju Li
- College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China
| | - Yan Zhu
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Qing Robert Miao
- Winthrop Hospital Diabetes and Obesity Research Center, New York University, New York, NY, USA
| | - Yasuko Iwakiri
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, USA
| | - Yuanli Chen
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China.
| | - Jihong Han
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China; College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, China.
| | - Yajun Duan
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China.
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7
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Jankovska E, Lipcseyova D, Svrdlikova M, Pavelcova M, Kubala Havrdova E, Holada K, Petrak J. Quantitative proteomic analysis of cerebrospinal fluid of women newly diagnosed with multiple sclerosis. Int J Neurosci 2020; 132:724-734. [PMID: 33059501 DOI: 10.1080/00207454.2020.1837801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE The lack of reliable diagnostic and/or prognostic biomarkers for multiple sclerosis (MS) is the major obstacle to timely and accurate patient diagnosis in MS patients. To identify new proteins associated with MS we performed a detailed proteomic analysis of cerebrospinal fluid (CSF) of patients newly diagnosed with relapsing-remitting MS (RRMS) and healthy controls. MATERIAL Reflecting significantly higher prevalence of MS in women we included only women patients and controls in the study. To eliminate a potential effect of therapy on the CSF composition, only the therapy-naïve patients were included. METHODS Pooled CSF samples were processed in a technical duplicate, and labeled with stable-isotope coded TMT tags. To maximize the proteome coverage, peptide fractionation using 2D-LC preceded mass analysis using Orbitrap Fusion Tribrid Mass Spectrometer. Differential concentration of selected identified proteins between patients and controls was verified using specific antibodies. RESULTS Of the identified 900 CSF proteins, we found 69 proteins to be differentially abundant between patients and controls. In addition to several proteins identified as differentially abundant in MS patients previously, we observed several linked to MS for the first time, namely eosinophil-derived neurotoxin and Nogo receptor. CONCLUSIONS Our data confirm differential abundance of several previously proposed protein markers, and provide indirect support for involvement of copper-iron disbalance in MS. Most importantly, we identified two new differentially abundant CSF proteins that seem to be directly connected with myelin loss and axonal damage via TLR2 signaling and Nogo-receptor pathway in women newly diagnosed with RRMS.
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Affiliation(s)
- Eliska Jankovska
- BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czech Republic
| | - Denisa Lipcseyova
- BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czech Republic
| | - Michaela Svrdlikova
- BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czech Republic
| | - Miluse Pavelcova
- Department of Neurology and Center for Clinical Neuroscience, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Eva Kubala Havrdova
- Department of Neurology and Center for Clinical Neuroscience, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Karel Holada
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jiri Petrak
- BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czech Republic
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Mohammed R, Opara K, Lall R, Ojha U, Xiang J. Evaluating the effectiveness of anti- Nogo treatment in spinal cord injuries. Neural Dev 2020; 15:1. [PMID: 31918754 PMCID: PMC6953157 DOI: 10.1186/s13064-020-0138-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 01/05/2020] [Indexed: 02/08/2023] Open
Abstract
As humans, we cannot regenerate axons within the central nervous system (CNS), therefore, making any damage to it permanent. This leads to the loss of sensory and motor function below the site of injury and can be crippling to a person’s health. Spontaneous recovery can occur from plastic changes, but it is minimal. The absence of regeneration is due to the inhibitory environment of the CNS as well as the inherent inability of CNS axons to form growth cones. Amongst many factors, one of the major inhibitory signals of the CNS environment is the myelin-associated Nogo pathway. Nogo-A, Nogo-B and Nogo-C (Nogo), stimulate the Nogo receptor, inhibiting neurite outgrowth by causing growth cones to collapse through activation of Rho Kinase (ROCK). Antibodies can be used to target this signalling pathway by binding to Nogo and thus promote the outgrowth of neuronal axons in the CNS. This use of anti-Nogo antibodies has been shown to upregulate CNS regeneration as well as drastically improve sensory and motor function in both rats and primates when coupled with adequate training. Here, we evaluate whether the experimental success of anti-Nogo at improving CNS regeneration can be carried over into the clinical setting to treat spinal cord injuries (SCI) and their symptoms successfully. Furthermore, we also discuss potential methods to improve the current treatment and any developmental obstacles.
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Affiliation(s)
- Raihan Mohammed
- Department of Medicine, School of Clinical Medicine, University of Cambridge, Hills Rd, Cambridge, CB2 0SP, UK.
| | - Kaesi Opara
- Department of Medicine, School of Clinical Medicine, University of Cambridge, Hills Rd, Cambridge, CB2 0SP, UK
| | - Rahul Lall
- Department of Medicine, School of Clinical Medicine, University of Cambridge, Hills Rd, Cambridge, CB2 0SP, UK
| | - Utkarsh Ojha
- Faculty of Medicine, Imperial College London, London, UK
| | - Jinpo Xiang
- Faculty of Medicine, Imperial College London, London, UK
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9
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Sekine Y, Lindborg JA, Strittmatter SM. A proteolytic C-terminal fragment of Nogo-A (reticulon-4A) is released in exosomes and potently inhibits axon regeneration. J Biol Chem 2019; 295:2175-2183. [PMID: 31748413 DOI: 10.1074/jbc.ra119.009896] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 11/14/2019] [Indexed: 11/06/2022] Open
Abstract
Glial signals are known to inhibit axonal regeneration and functional recovery after mammalian central nervous system trauma, including spinal cord injury. Such signals include membrane-associated proteins of the oligodendrocyte plasma membrane and astrocyte-derived, matrix-associated proteins. Here, using cell lines and primary cortical neuron cultures, recombinant protein expression, immunoprecipitation and immunoblot assays, transmission EM of exosomes, and axon regeneration assays, we explored the secretion and activity of the myelin-associated neurite outgrowth inhibitor Nogo-A and observed exosomal release of a 24-kDa C-terminal Nogo-A fragment from cultured cells. We found that the cleavage site in this 1192-amino-acid-long fragment is located between amino acids 961-971. We also detected a Nogo-66 receptor (NgR1)-interacting Nogo-66 domain on the exosome surface. Enzyme inhibitor treatment and siRNA knockdown revealed that β-secretase 1 (BACE1) is the protease responsible for Nogo-A cleavage. Functionally, exosomes with the Nogo-66 domain on their surface potently inhibited axonal regeneration of mechanically injured cerebral cortex neurons from mice. Production of this fragment was observed in the exosomal fraction from neuronal tissue lysates after spinal cord crush injury of mice. We also noted that, relative to the exosomal marker Alix, a Nogo-immunoreactive, 24-kDa protein is enriched in exosomes 2-fold after injury. We conclude that membrane-associated Nogo-A produced in oligodendrocytes is processed proteolytically by BACE1, is released via exosomes, and is a potent diffusible inhibitor of regenerative growth in NgR1-expressing axons.
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Affiliation(s)
- Yuichi Sekine
- Cellular Neuroscience, Neurodegeneration, and Repair Program, Departments of Neurology and of Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06536
| | - Jane A Lindborg
- Cellular Neuroscience, Neurodegeneration, and Repair Program, Departments of Neurology and of Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06536
| | - Stephen M Strittmatter
- Cellular Neuroscience, Neurodegeneration, and Repair Program, Departments of Neurology and of Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06536.
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Ueno R, Takase H, Suenaga J, Kishimoto M, Kurihara Y, Takei K, Kawahara N, Yamamoto T. Axonal regeneration and functional recovery driven by endogenous Nogo receptor antagonist LOTUS in a rat model of unilateral pyramidotomy. Exp Neurol 2019; 323:113068. [PMID: 31629859 DOI: 10.1016/j.expneurol.2019.113068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 12/26/2022]
Abstract
The adult mammalian central nervous system (CNS) rarely recovers from injury. Myelin fragments contain axonal growth inhibitors that limit axonal regeneration, thus playing a major role in determining neural recovery. Nogo receptor-1 (NgR1) and its ligands are among the inhibitors that limit axonal regeneration. It has been previously shown that the endogenous protein, lateral olfactory tract usher substance (LOTUS), antagonizes NgR1-mediated signaling and accelerates neuronal plasticity after spinal cord injury and cerebral ischemia in mice. However, it remained unclear whether LOTUS-mediated reorganization of descending motor pathways in the adult brain is physiologically functional and contributes to functional recovery. Here, we generated LOTUS-overexpressing transgenic (LOTUS-Tg) rats to investigate the role of LOTUS in neuronal function after damage. After unilateral pyramidotomy, motor function in LOTUS-Tg rats recovered significantly compared to that in wild-type animals. In a retrograde tracing study, labeled axons spanning from the impaired side of the cervical spinal cord to the unlesioned hemisphere of the red nucleus and sensorimotor cortex were increased in LOTUS-Tg rats. Anterograde tracing from the unlesioned cortex also revealed enhanced ipsilateral connectivity to the impaired side of the cervical spinal cord in LOTUS-Tg rats. Moreover, electrophysiological analysis showed that contralesional cortex stimulation significantly increased ipsilateral forelimb movement in LOTUS-Tg rats, which was consistent with the histological findings. According to these data, LOTUS overexpression accelerates ipsilateral projection from the unlesioned cortex and promotes functional recovery after unilateral pyramidotomy. LOTUS could be a future therapeutic option for CNS injury.
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Affiliation(s)
- Ryu Ueno
- Department of Neurosurgery, Yokohama City University, Yokohama, Japan.
| | - Hajime Takase
- Department of Neurosurgery, Yokohama City University, Yokohama, Japan.
| | - Jun Suenaga
- Department of Neurosurgery, Yokohama City University, Yokohama, Japan.
| | - Masao Kishimoto
- Department of Neurosurgery, Yokohama City University, Yokohama, Japan.
| | - Yuji Kurihara
- Molecular Medical Bioscience Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, Yokohama, Japan.
| | - Kohtaro Takei
- Molecular Medical Bioscience Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, Yokohama, Japan.
| | - Nobutaka Kawahara
- Department of Neurosurgery, Yokohama City University, Yokohama, Japan
| | - Tetsuya Yamamoto
- Department of Neurosurgery, Yokohama City University, Yokohama, Japan.
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11
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Meng Y, Shang F, Zhu Y. miR-124 participates in the proliferation and differentiation of brain glioma stem cells through regulating Nogo/NgR expression. Exp Ther Med 2019; 18:2783-2788. [PMID: 31572526 PMCID: PMC6755475 DOI: 10.3892/etm.2019.7914] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/30/2019] [Indexed: 11/29/2022] Open
Abstract
The effect of miR-124 on the proliferation and differentiation of brain glioma stem cells and Nogo/NgR signaling pathway were investigated. miR-124 mimic, miR-124 inhibitor and miR-control expression vector were designed and produced to transfect U87 glioma stem cells. The results of transfection were tested via RT-qPCR and the expression of protein was detected by western blot analysis. Cell proliferation was detected by MTT proliferation and the proportion of CD133+ cells was detected by immunomagnetic beads to determine cell differentiation. The correlation between miR-124 and Nogo-A, and NgR protein expression was analyzed by Spearman correlation analysis. The relative expression of miR-124 in cells of miR-124 mimic group was significantly higher than that of miR-124 inhibitor and miR-control groups (P<0.05). The relative expression of Nogo-A and NgR protein in cells of the miR-124 mimic group was significantly lower than that of miR-124 inhibitor and miR-control groups (P<0.05). Absorbance values of the cells in the miR-124 mimic and miR-control groups were significantly lower than those in the miR-124 inhibitor group at each time point (P<0.05), while the values of the cells in the miR-124 mimic group were significantly lower than that in miR-control group (P<0.05). The level of CD133+ cells in miR-124 mimic group was significantly lower than that in miR-124 inhibitor and miR-control groups (P<0.05), while the level of CD133+ cells in miR-124 inhibitor group was higher than that in miR-control group (P<0.05). Correlation analysis revealed that there was a negative correlation between miR-124 and the expression of Nogo-A and NgR protein (P<0.05). miR-124 may participate in the differentiation of brain glioma stem cells through the Nogo/NgR pathway, which may bring a new direction for the clinical treatment of brain glioma.
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Affiliation(s)
- Yun Meng
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Art and Science, Xiangyang, Hubei 441021, P.R. China
| | - Furong Shang
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Art and Science, Xiangyang, Hubei 441021, P.R. China
| | - Yanliang Zhu
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Art and Science, Xiangyang, Hubei 441021, P.R. China
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12
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Maejima H, Inoue T, Takamatsu Y. Therapeutic exercise accompanied by neuronal modulation to enhance neurotrophic factors in the brain with central nervous system disorders. Phys Ther Res 2019; 22:38-43. [PMID: 31289711 DOI: 10.1298/ptr.r0004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 03/05/2019] [Indexed: 12/13/2022]
Abstract
Exercise is a primary therapeutic regimen in physical therapy to rehabilitate the motor function of patients with central nervous system (CNS) disorders such as cerebrovascular accident (CVA). Furthermore, exercise positively contributes to cognitive function related to neuroplasticity and neuroprotection in the hippocampus. Neurotrophins play a crucial role in neuroplasticity, neurogenesis, and neuroprotection in the CNS. Exercise enhances the expression of neurotrophins in the brain. Thus, novel regimens for kinesiotherapy in CNS disorders to further enhance exercise-induced expression are expected. In this review, we described three novel regimens for kinesiotherapy in CNS disorders based on the interaction between exercise and pharmacological treatment with the idea of "inhibition of inhibition" in the CNS.
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Affiliation(s)
- Hiroshi Maejima
- Department of Rehabilitation Science, Faculty of Health Sciences, Hokkaido University
| | | | - Yasuyuki Takamatsu
- Department of Rehabilitation Science, Faculty of Health Sciences, Hokkaido University
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Wang L, Xu J, Guo D, Zhou X, Jiang W, Wang J, Tang J, Zou Y, Bi M, Li Q. Fasudil alleviates brain damage in rats after carbon monoxide poisoning through regulating neurite outgrowth inhibitor/oligodendrocytemyelin glycoprotein signalling pathway. Basic Clin Pharmacol Toxicol 2019; 125:152-165. [PMID: 30916885 DOI: 10.1111/bcpt.13233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 02/07/2019] [Indexed: 12/21/2022]
Abstract
Carbon monoxide (CO) poisoning can lead to many serious neurological symptoms. Currently, there are no effective therapies for CO poisoning. In this study, rats exposed to CO received hyperbaric oxygen therapy, and those in the Fasudil group were given additional Fasudil injection once daily. We found that the escape latency in CO poisoning group (CO group) was significantly prolonged, the T1 /Ttotal was obviously decreased, and the mean escape time and the active escape latency were notably extended compared with those in normal control group (NC group, P < 0.05). After administration of Fasudil, the escape latency was significantly shortened, T1 /Ttotal was gradually increased as compared with CO group (>1 week, P < 0.05). Ultrastructural damage of neurons and blood-brain barrier of rats was serious in CO group, while the structural and functional integrity of neuron and mitochondria maintained relatively well in Fasudil group. Moreover, we also noted that the expressions of neurite outgrowth inhibitor (Nogo), oligodendrocyte-myelin glycoprotein (OMgp) and Rock in brain tissue were significantly increased in CO group, and the elevated levels of the three proteins were still observed at 2 months after CO poisoning. Fasudil markedly reduced their expressions compared with those of CO group (P < 0.05). In summary, the activation of Nogo-OMgp/Rho signalling pathway is associated with brain injury in rats with CO poisoning. Fasudil can efficiently down-regulate the expressions of Nogo, OMgp and Rock proteins, paving a way for the treatment of acute brain damage after CO poisoning.
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Affiliation(s)
- Li Wang
- Department of Neurology, Qianfoshan Hospital Affiliated to Shandong University, Jinan Shandong, China.,Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai Shandong, China
| | - Jianghua Xu
- Department of neurology, Yantai YEDA Hospital, Yantai Shandong, China
| | - Dadong Guo
- Eye Institute of Shandong University of Traditional Chinese Medicine, Jinan Shandong, China
| | - Xudong Zhou
- The First Affiliated Hospital of Shandong, University of Traditional Chinese Medicine, Jinan Shandong, China
| | - Wenwen Jiang
- Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai Shandong, China
| | - Jinglin Wang
- Emergency Centre, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai Shandong, China
| | - Jiyou Tang
- Department of Neurology, Qianfoshan Hospital Affiliated to Shandong University, Jinan Shandong, China
| | - Yong Zou
- Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai Shandong, China
| | - Mingjun Bi
- Emergency Centre, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai Shandong, China
| | - Qin Li
- Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai Shandong, China
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14
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Fang Y, Wang J, Yao L, Li C, Wang J, Liu Y, Tao X, Sun H, Liao H. The adhesion and migration of microglia to β-amyloid (Aβ) is decreased with aging and inhibited by Nogo/NgR pathway. J Neuroinflammation 2018; 15:210. [PMID: 30029608 PMCID: PMC6054753 DOI: 10.1186/s12974-018-1250-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/05/2018] [Indexed: 11/10/2022] Open
Abstract
Background Alzheimer’s disease is characterized by progressive accumulation of β-amyloid (Aβ)-containing amyloid plaques, and microglia play a critical role in internalization and degradation of Aβ. Our previous research confirmed that Nogo-66 binding to Nogo receptors (NgR) expressed on microglia inhibits cell adhesion and migration in vitro. Methods The adhesion and migration of microglia isolated from WT and APP/PS1 mice from different ages were measured by adhesion assays and transwells. After NEP1-40 (a competitive antagonist of Nogo/NgR pathway) was intracerebroventricularly administered via mini-osmotic pumps for 2 months in APP/PS1 transgenic mice, microglial recruitment toward Aβ deposits and CD36 expression were determined. Results In this paper, we found that aging led to a reduction of microglia adhesion and migration to fAβ1–42 in WT and APP/PS1 mice. The adhesion and migration of microglia to fAβ1–42 were downregulated by the Nogo, which was mediated by NgR, and the increased inhibitory effects of the Nogo could be observed in aged mice. Moreover, Rho GTPases contributed to the effects of the Nogo on adhesion and migration of microglia to fAβ1–42 by regulating cytoskeleton arrangement. Furthermore, blocking the Nogo/NgR pathway enhanced recruitment of microglia toward Aβ deposits and expression of CD36 in APP/PS1 mice. Conclusion Taken together, Nogo/NgR pathway could take part in Aβ pathology in AD by modulating microglial adhesion and migration to Aβ and the Nogo/NgR pathway might be an important target for treating AD. Electronic supplementary material The online version of this article (10.1186/s12974-018-1250-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yinquan Fang
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China.,Department of Pharmacology, Jiangsu Key Laboratory of Neurodegeneration, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jianing Wang
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Lemeng Yao
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Chenhui Li
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Jing Wang
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Yuan Liu
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Xia Tao
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Hao Sun
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Hong Liao
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China.
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15
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Pathak GP, Shah R, Kennedy BE, Murphy JP, Clements D, Konda P, Giacomantonio M, Xu Z, Schlaepfer IR, Gujar S. RTN4 Knockdown Dysregulates the AKT Pathway, Destabilizes the Cytoskeleton, and Enhances Paclitaxel-Induced Cytotoxicity in Cancers. Mol Ther 2018; 26:2019-2033. [PMID: 30078441 DOI: 10.1016/j.ymthe.2018.05.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 05/14/2018] [Accepted: 05/31/2018] [Indexed: 02/06/2023] Open
Abstract
Reticulon-4 (RTN4), commonly known as a neurite outgrowth inhibitor (Nogo), is emerging as an important player in human cancers. Clinically, we found lower RTN4 expression in patient-derived tumors was associated with significantly better survival in lung, breast, cervical, and renal cancer patients. To identify the role of RTN4 in cancer biology, we performed mass spectrometry-based quantitative proteomic analysis on cancer cells following RTN4 knockdown and found its link with pro-survival as well as cytoskeleton-related processes. Subsequent mechanistic investigations revealed that RTN4 regulates lipid homeostasis, AKT signaling, and cytoskeleton modulation. In particular, downregulation of RTN4 reduced sphingomyelin synthesis and impaired plasma membrane localization of AKT, wherein AKT phosphorylation, involved in many cancers, was significantly reduced without any comparable effect on AKT-related upstream kinases, in a sphingolipid-dependent manner. Furthermore, knockdown of RTN4 retarded proliferation of cancer cells in vitro as well as tumor xenografts in mice. Finally, RTN4 knockdown affected tubulin stability and promoted higher cytotoxic effects with chemotherapeutic paclitaxel in cancer cells both in vitro and in vivo. In summary, RTN4 is involved in carcinogenesis and represents a molecular candidate that may be targeted to achieve desired antitumor effects in clinics.
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Affiliation(s)
- Gopal P Pathak
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada
| | - Rashmi Shah
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada
| | - Barry E Kennedy
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada
| | - J Patrick Murphy
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada
| | - Derek Clements
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada
| | - Prathyusha Konda
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada
| | | | - Zhaolin Xu
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada
| | - Isabel R Schlaepfer
- Division of Medical Oncology, Genitourinary Cancer Program, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Shashi Gujar
- Department of Pathology, Dalhousie University, Halifax, NS B3H 1X5, Canada; Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 1X5, Canada; Department of Biology, Dalhousie University, Halifax, NS B3H 1X5, Canada; Centre for Innovative and Collaborative Health Systems Research, IWK Health Centre, Halifax, NS B3K 6R8, Canada.
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16
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Takeda K, Nakamura A. Regulation of immune and neural function via leukocyte Ig-like receptors. J Biochem 2017; 162:73-80. [PMID: 28898976 DOI: 10.1093/jb/mvx036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/11/2017] [Indexed: 01/02/2023] Open
Abstract
Leukocyte Ig-like receptors (LILRs)/Ig-like transcripts (ILTs) are expressed on innate and adaptive immune cells and maintain immune homeostasis. LILRs consist of activating and inhibitory-type receptors that regulate adequate cellular functions. LILRs were firstly identified as MHC class I receptors, therefore expression and/or polymorphisms of LILRs are reported to associate with autoimmune disorders and transplant rejection; however, recent accumulating evidences have revealed that LILRs recognize with diverse ligands including bacteria and virus. In addition, inhibitory LILRB2 (ILT4) and murine relative paired Ig-like receptor (PIR)-B are expressed on neuron and is involved in the dysregulation of central nervous system via interaction with neuronal ligands including amyloid β-protein. In this review, we summarize recent discoveries on the functions of inhibitory MHC class I receptors, and discuss their regulatory roles in immune responses and neural functions.
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Affiliation(s)
- Kazuya Takeda
- Division of Immunology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Akira Nakamura
- Division of Immunology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
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17
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Ziebell JM, Ray-Jones H, Lifshitz J. Nogo presence is inversely associated with shifts in cortical microglial morphology following experimental diffuse brain injury. Neuroscience 2017; 359:209-223. [PMID: 28736137 DOI: 10.1016/j.neuroscience.2017.07.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/28/2017] [Accepted: 07/12/2017] [Indexed: 01/08/2023]
Abstract
Diffuse traumatic brain injury (TBI) initiates secondary pathology, including inflammation and reduced myelination. Considering these injury-related pathologies, the many states of activated microglia as demonstrated by differing morphologies would form, migrate, and function in and through fields of growth-inhibitory myelin byproduct, specifically Nogo. Here we evaluate the relationship between inflammation and reduced myelin antigenicity in the wake of diffuse TBI and present the hypothesis that the Nogo-66 receptor antagonist peptide NEP(1-40) would reverse the injury-induced shift in distribution of microglia morphologies by limiting myelin-based inhibition. Adult male rats were subjected to midline fluid percussion sham or brain injury. At 2h, 6h, 1d, 2d, 7d, and 21d post-injury, immunohistochemical staining was analyzed in sensory cortex (S1BF) for myelin antigens (myelin basic protein; MBP and CNPase), microglia morphology (ionized calcium-binding adapter protein; Iba1), Nogo receptor and Nogo. Pronounced reduction in myelin antigenicity was evident transiently at 1d post-injury, as evidenced by decreased MBP and CNPase staining, as well as loss of white matter organization, compared to sham and later injury time points. Concomitant with reduced myelin antigenicity, injury shifted microglia morphology from the predominantly ramified morphology observed in sham-injured cortex to hyper-ramified, activated, fully activated, or rod. Changes in microglial morphology were evident as early as 2h post-injury, and remained at least until day 21. Additional cohorts of uninjured and brain-injured animals received vehicle or drug (NEP(1-40), i.p., 15min and 19h post-injury) and brains were collected at 2h, 6h, 1d, 2d, or 7d post-injury. NEP(1-40) administration further shifted distributions of microglia away from an injury-induced activated morphology toward greater proportions of rod and macrophage-like morphologies compared to vehicle-treated. By 7d post-injury, no differences in the distributions of microglia were noted between vehicle and NEP(1-40). This study begins to link secondary pathologies of white matter damage and inflammation after diffuse TBI. In the injured brain, secondary pathologies co-occur and likely interact, with consequences for neuronal circuit disruption leading to neurological symptoms.
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Affiliation(s)
- Jenna M Ziebell
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA.
| | - Helen Ray-Jones
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA; Department of Biology and Biochemistry, University of Bath, Bath, England, UK
| | - Jonathan Lifshitz
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA; VA Healthcare System, Phoenix, AZ, USA; Psychology, Arizona State University, Tempe, AZ, USA
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Hannila S, Mellado W. Editorial: Myelin-Mediated Inhibition of Axonal Regeneration: Past, Present, and Future. Front Mol Neurosci 2017; 10:113. [PMID: 28503131 PMCID: PMC5408083 DOI: 10.3389/fnmol.2017.00113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 04/05/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sari Hannila
- Department of Human Anatomy and Cell Science, College of Medicine, University of ManitobaWinnipeg, MB, Canada
| | - Wilfredo Mellado
- Laboratory for Axonal and RNA Biology, Burke-Cornell Medical Research InstituteWhite Plains, NY, USA
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19
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Wang N, Chen K, Xu J, Yuan F, Li H, Deng F, Zhang L. Association of CAA and TATC Insertion/Deletion Genetic Polymorphisms in RTN4 3'-UTR with Hepatocellular Carcinoma Risk. Pathol Oncol Res 2017; 24:31-34. [PMID: 28144881 DOI: 10.1007/s12253-017-0204-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 01/23/2017] [Indexed: 02/05/2023]
Abstract
Evidence from recent researchers suggested that RTN4 is a multifunctional gene, including tumor suppression, apoptosis, vascular remodeling, and inhibition of axonal regeneration. The CAA and TATC insertion/deletion polymorphisms (CAA/TATC polymorphisms) of RTN4 3″-untranslated regions (UTRs) have been linked to cervical squamous cell carcinoma (CSCC), uterine leiomyomas (UL) and non-small cell lung cancer (NSCLC). However, the association between these two polymorphisms sites with Hepatocellular Carcinoma (HCC) risk was not carry out before. A total of 284 HCC patients and 484 control subjects were recruited for this study. The RTN4 CAA/TATC insertion/deletion genotypes were determined using polymerase chain reaction (PCR) assay. The ID/DD genotypes of CAA were significantly associated with an increased risk of HCC compared with the II genotype (ID vs. II: OR = 1.50, 95% CI: 1.10-2.04; DD vs. II: OR = 2.00, 95%CI: 1.15-3.46). Meanwhile, the frequency of D allele of CAA was significantly related with an increased risk of HCC compared with the I allele (D vs. I: OR = 1.39, 95% CI: 1.12-1.73). The ID genotypes of TATC was significantly associated with an increased risk of HCC compared with the DD genotype (ID vs. DD: OR = 1.70, 95% CI: 1.23-2.33). The present study provided evidence that RTN4 CAA/TATC polymorphisms were associated with HCC development in Chinese Han population.
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Affiliation(s)
- NaNa Wang
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu, 610500, China
| | - KeYu Chen
- School of Biomedical Sciences, Chengdu Medical College, Chengdu, 610500, China
| | - Jia Xu
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu, 610500, China
| | - Fang Yuan
- Department of Immunology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - HongYu Li
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - FengMei Deng
- Development and Regeneration Key Laboratory of Sichuan Province, Department of Neurobiology, Department of Pathology and Pathophysiology, Chengdu Medical College, Chengdu, 610500, China
| | - LuShun Zhang
- Development and Regeneration Key Laboratory of Sichuan Province, Department of Neurobiology, Department of Pathology and Pathophysiology, Chengdu Medical College, Chengdu, 610500, China.
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Nardai S, Dobolyi A, Skopál J, Lakatos K, Merkely B, Nagy Z. Delayed Gelatinase Inhibition Induces Reticulon 4 Receptor Expression in the Peri-Infarct Cortex. J Neuropathol Exp Neurol 2016; 75:379-85. [PMID: 26945033 DOI: 10.1093/jnen/nlw011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Matrix metalloproteinase (MMP) inhibition can potentially prevent hemorrhagic transformation following cerebral infarction; however, delayed-phase MMP activity is also necessary for functional recovery after experimental stroke. We sought to identify potential mechanisms responsible for the impaired recovery associated with subacute MMP inhibition in a transient middle cerebral artery occlusion model of focal ischemia in CD rats. Gelatinase inhibition was achieved by intracerebral injection of the Fn-439 MMP inhibitor 7 days after stroke. Treatment efficacy was determined on day 9 by in situ gelatin zymography. The peri-infarct cortex was identified by triphenyl tetrazolium chloride staining, and tissue samples were dissected for TaqMan array gene-expression study. Of 84 genes known to influence poststroke regeneration, we found upregulation of mRNA for the reticulon 4 receptor (Rtn4r), a major inhibitor of regenerative nerve growth in the adult CNS, and borderline expression changes for 3 additional genes (DCC, Jun, and Ngfr). Western blot confirmed increased Rtn4r protein in the peri-infarct cortex of treated animals, and double immunolabeling showed colocalization primarily with the S100 astrocyte marker. These data suggest that increased Rtn4 receptor expression in the perilesional cortex may contribute to the impaired regeneration associated with MMP inhibition in the subacute phase of cerebral infarction.
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Affiliation(s)
- Sándor Nardai
- From the Department Section of Vascular Neurology, Heart and Vascular Center, Semmelweis University, Budapest, Hungary (SN, JS, KL, BM, ZN); National Institute of Clinical Neurosciences, Budapest, Hungary (SN, ZN); and NAP Laboratory of Molecular and Systems Neurobiology, Institute of Biology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary (AD)
| | - Arpád Dobolyi
- From the Department Section of Vascular Neurology, Heart and Vascular Center, Semmelweis University, Budapest, Hungary (SN, JS, KL, BM, ZN); National Institute of Clinical Neurosciences, Budapest, Hungary (SN, ZN); and NAP Laboratory of Molecular and Systems Neurobiology, Institute of Biology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary (AD)
| | - Judit Skopál
- From the Department Section of Vascular Neurology, Heart and Vascular Center, Semmelweis University, Budapest, Hungary (SN, JS, KL, BM, ZN); National Institute of Clinical Neurosciences, Budapest, Hungary (SN, ZN); and NAP Laboratory of Molecular and Systems Neurobiology, Institute of Biology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary (AD)
| | - Kinga Lakatos
- From the Department Section of Vascular Neurology, Heart and Vascular Center, Semmelweis University, Budapest, Hungary (SN, JS, KL, BM, ZN); National Institute of Clinical Neurosciences, Budapest, Hungary (SN, ZN); and NAP Laboratory of Molecular and Systems Neurobiology, Institute of Biology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary (AD)
| | - Béla Merkely
- From the Department Section of Vascular Neurology, Heart and Vascular Center, Semmelweis University, Budapest, Hungary (SN, JS, KL, BM, ZN); National Institute of Clinical Neurosciences, Budapest, Hungary (SN, ZN); and NAP Laboratory of Molecular and Systems Neurobiology, Institute of Biology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary (AD)
| | - Zoltán Nagy
- From the Department Section of Vascular Neurology, Heart and Vascular Center, Semmelweis University, Budapest, Hungary (SN, JS, KL, BM, ZN); National Institute of Clinical Neurosciences, Budapest, Hungary (SN, ZN); and NAP Laboratory of Molecular and Systems Neurobiology, Institute of Biology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary (AD).
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Gang L, Yao YC, Liu YF, Li YP, Yang K, Lu L, Cheng YC, Chen XY, Tu Y. Co-culture of oligodendrocytes and neurons can be used to assess drugs for axon regeneration in the central nervous system. Neural Regen Res 2015; 10:1612-6. [PMID: 26692858 PMCID: PMC4660754 DOI: 10.4103/1673-5374.167759] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We present a novel in vitro model in which to investigate the efficacy of experimental drugs for the promotion of axon regeneration in the central nervous system. We co-cultured rat hippocampal neurons and cerebral cortical oligodendrocytes, and tested the co-culture system using a Nogo-66 receptor antagonist peptide (NEP1–40), which promotes axonal growth. Primary cultured oligodendrocytes suppressed axonal growth in the rat hippocampus, but NEP1–40 stimulated axonal growth in the co-culture system. Our results confirm the validity of the neuron-oligodendrocyte co-culture system as an assay for the evaluation of drugs for axon regeneration in the central nervous system.
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Affiliation(s)
- Lin Gang
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China ; Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yu-Chen Yao
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China
| | - Ying-Fu Liu
- Logistics University of Chinese People's Armed Police Forces, Tianjin, China
| | - Yi-Peng Li
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China ; Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Kai Yang
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China ; Liaoning Medical University, Jinzhou, Liaoning Province, China
| | - Lei Lu
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China ; Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yuan-Chi Cheng
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China ; Liaoning Medical University, Jinzhou, Liaoning Province, China
| | - Xu-Yi Chen
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China ; Key Laboratory of Nerve Trauma Repair, Tianjin, China
| | - Yue Tu
- Neurological Hospital of Affiliated Hospital of Logistics University of Chinese People's Armed Police Force, Tianjin, China ; Key Laboratory of Nerve Trauma Repair, Tianjin, China
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Abstract
While neurons in the central nervous system (CNS) have the capacity to regenerate their axons after injury, they fail to do so, in part because regeneration is limited by growth inhibitory proteins present in CNS myelin. Myelin-associated glycoprotein (MAG) was the first myelin-derived growth inhibitory protein identified, and its inhibitory activity was initially elucidated in 1994 independently by the Filbin lab and the McKerracher lab using cell-based and biochemical techniques, respectively. Since that time we have gained a wealth of knowledge concerning the numerous growth inhibitory proteins that are present in myelin, and we also have dissected many of the neuronal signaling pathways that act as stop signs for axon regeneration. Here we give an overview of the early research efforts that led to the identification of myelin-derived growth inhibitory proteins, and the importance of this family of proteins for understanding neurotrauma and CNS diseases. We further provide an update on how this knowledge has been translated towards current clinical studies in regenerative medicine.
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Affiliation(s)
- Lisa McKerracher
- BioAxone BioSciences Inc. Cambridge, MA, USA ; Department of Neurology and Neurosurgery, McGill University Montreal, QC, Canada
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Ahn DG, Sharif T, Chisholm K, Pinto DM, Gujar SA, Lee PWK. Ras transformation results in cleavage of reticulon protein Nogo-B that is associated with impairment of IFN response. Cell Cycle 2015; 14:2301-10. [PMID: 25946643 DOI: 10.1080/15384101.2015.1044187] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Dysregulation of Ras signaling is the major cause of various cancers. Aberrant Ras signaling, however, provides a favorable environment for many viruses, making them suitable candidates as cancer-killing therapeutic agents. Susceptibility of cancer cells to such viruses is mainly due to impaired type I interferon (IFN) response, often as a result of activated Ras/ERK signaling in these cells. In this study, we searched for cellular factors modulated by Ras signaling and their potential involvement in promoting viral oncolysis. We found that upon Ras transformation of NIH-3T3 cells, the N-terminus of Nogo-B (reticulon 4) was proteolytically cleaved. Interestingly, Nogo knockdown (KD) in non-transformed and Ras-transformed cells both enhanced virus-induced IFN response, suggesting that both cleaved and uncleaved Nogo can suppress IFN response. However, pharmacological blockade of Nogo cleavage in Ras-transformed cells significantly enhanced virus-induced IFN response, suggesting that cleaved Nogo contributes to enhanced IFN suppression in these cells. We further showed that IFN suppression associated with Ras-induced Nogo-B cleavage was distinct from but synergistic with that associated with an activated Ras/ERK pathway. Our study therefore reveals an important and novel role of Nogo-B and its cleavage in the suppression of anti-viral immune responses by oncogenic Ras transformation.
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Affiliation(s)
- Dae-Gyun Ahn
- a Department of Microbiology and Immunology ; Dalhousie University ; Halifax , Nova Scotia , Canada
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Li Q, Cheng Y, Bi MJ, Kang H, Qu Y, Lin H, Guo Y, Zou Y. Effects of N-Butylphthalide on the expressions of Nogo/NgR in rat brain tissue after carbon monoxide poisoning. Environ Toxicol Pharmacol 2015; 39:953-961. [PMID: 25812770 DOI: 10.1016/j.etap.2015.02.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 02/14/2015] [Accepted: 02/19/2015] [Indexed: 06/04/2023]
Abstract
Carbon monoxide (CO) intoxication is one of the most common types of poisoning worldwide, and may result in neuropathologic sequelae, yet its pathogenesis is not clear and there is no optimal management strategy for patients with CO poisoning. In this study, the rat model of CO poisoning was established in a hyperbaric chamber by CO exposure. Rats were administered orally N-Butylphthalide (NBP) at a dose of 1 ml/100g. Neuronal apoptosis was assessed by TUNEL stain and flow cytometry. The expressions of neurite outgrowth inhibitor (Nogo), myelin-associated glycoprotein (MAG) and Nogo receptor-1 (NgR1) were observed in rat brain tissue by immunohistochemistry and double immunofluorescence staining. As we expected, CO poisoning could start the mechanism of apoptosis. The number of apoptotic cells and the early neuronal apoptosis percentage (EAR) were significantly increased at 1 day, 3 day after CO exposure. NBP treatment obviously reduce neuronal apoptosis and the EAR (P<0.05). CO poisoning could induce Nogo, MAG and NgR1 expressions. The increased Nogo, MAG and NgR1 proteins were still observed at 4 week after CO poisoning. NBP could significantly reduce the levels of Nogo and NgR1 proteins. Then we suspected that the expressions of Nogo, MAG and NGR1 proteins might be associated with brain injury and demyelination induced by CO poisoning. NBP might inhibit neuronal apoptosis and the EAR, down-regulate the expressions of Nogo and NgR1 proteins (but not MAG), and play a neuro-protective role in brain damage after acute CO poisoning.
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Affiliation(s)
- Qin Li
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yongmei Cheng
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China.
| | - Ming Jun Bi
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China.
| | - Hai Kang
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yun Qu
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Hongyang Lin
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yunliang Guo
- Institute of Cerebrovascular Diseases, Affiliated Hospital of Qingdao University Medical College, Qingdao Jiangsu 16 Road, PR China
| | - Yong Zou
- Department of Clinical Medicine, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
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Shi Q, Ge Y, Sharoar MG, He W, Xiang R, Zhang Z, Hu X, Yan R. Impact of RTN3 deficiency on expression of BACE1 and amyloid deposition. J Neurosci 2014; 34:13954-62. [PMID: 25319692 DOI: 10.1523/JNEUROSCI.1588-14.2014] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reticulon 3 (RTN3) has previously been shown to interact with BACE1 and negatively regulate BACE1 activity. To what extent RTN3 deficiency affects BACE1 activity is an intriguing question. In this study, we aimed to address this by generating RTN3-null mice. Mice with complete deficiency of RTN3 grow normally and have no obviously discernible phenotypes. Morphological analyses of RTN3-null mice showed no significant alterations in cellular structure, although RTN3 is recognized as a protein contributing to the shaping of tubular endoplasmic reticulum. Biochemical analysis revealed that RTN3 deficiency increased protein levels of BACE1. This elevation of BACE1 levels correlated with enhanced processing of amyloid precursor protein at the β-secretase site. We also demonstrated that RTN3 deficiency in Alzheimer's mouse models facilitates amyloid deposition, further supporting an in vivo role of RTN3 in the regulation of BACE1 activity. Since it has been shown that RTN3 monomer is reduced in brains of Alzheimer's patients, our results suggest that long-lasting reduction of RTN3 levels has adverse effects on BACE1 activity and may contribute to Alzheimer's pathogenesis.
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26
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Dubessy AL, Zujovic V, Papeix C, Stankoff B. Biotherapies in multiple sclerosis: a step toward remyelination and neuroprotection? Rev Neurol (Paris) 2014; 170:770-8. [PMID: 25459127 DOI: 10.1016/j.neurol.2014.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 10/01/2014] [Accepted: 10/08/2014] [Indexed: 12/18/2022]
Abstract
Multiple sclerosis (MS) is a complex disease of the central nervous system (CNS), characterized by CNS-restricted inflammation with subsequent demyelination and neurodegeneration. Current disease-modifying therapies efficiently reduce relapse rate and new lesions appearance, but still fail to impact the progressive course of the disease. There is a great need for the avenue of new therapies aimed at promoting myelin repair or reducing neurodegeneration that should result in the prevention of neurological disability in this chronic disease. This review will focus on the potentials and limitations of biotherapies that are currently developed for the promotion of CNS repair in MS, either monoclonal antibodies targeting axonal growth and remyelination, or cell therapies aimed at replacing the depleted myelinating cells within the CNS. As other researches aimed at promoting neuroprotection or remyelination are following a classical pharmacological approach, they will not be described in this review, which will focus on antibody-based therapies and cell therapies.
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Affiliation(s)
- A-L Dubessy
- Sorbonne universités, UPMC Univ Paris 06, UMR S 1127, and Inserm U 1127, and CNRS UMR 7225, and ICM, 4, place Jussieu, 75013 Paris, France; 75005 Paris, France
| | - V Zujovic
- Sorbonne universités, UPMC Univ Paris 06, UMR S 1127, and Inserm U 1127, and CNRS UMR 7225, and ICM, 4, place Jussieu, 75013 Paris, France; 75005 Paris, France
| | - C Papeix
- Sorbonne universités, UPMC Univ Paris 06, UMR S 1127, and Inserm U 1127, and CNRS UMR 7225, and ICM, 4, place Jussieu, 75013 Paris, France; 75005 Paris, France; 75005 Paris, France
| | - B Stankoff
- Sorbonne universités, UPMC Univ Paris 06, UMR S 1127, and Inserm U 1127, and CNRS UMR 7225, and ICM, 4, place Jussieu, 75013 Paris, France; 75005 Paris, France; Université Pierre-et-Marie-Curie, hôpital Tenon-HUEP, AP-HP, 4, rue de la Chine, 75020 Paris, France.
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27
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Wang X, Yigitkanli K, Kim CY, Sekine-Komo T, Wirak D, Frieden E, Bhargava A, Maynard G, Cafferty WBJ, Strittmatter SM. Human NgR-Fc decoy protein via lumbar intrathecal bolus administration enhances recovery from rat spinal cord contusion. J Neurotrauma 2014; 31:1955-66. [PMID: 24964223 DOI: 10.1089/neu.2014.3355] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Axonal growth and neurological recovery after traumatic spinal cord injury (SCI) is limited by the presence of inhibitory proteins in myelin, several of which act via the NgR1 protein in neurons. A truncated soluble ligand-binding fragment of NgR1 serves as a decoy and promotes recovery in acute and chronic rodent SCI models. To develop the translational potential of these observations, we created a human sequence-derived NgR1(310)-Fc protein. This protein is active in vitro. When the human NgR1 decoy is administered by continuous intracerebroventricular infusion to rats with a spinal contusion injury at doses of 0.09-0.53 mg/kg/d, neurological recovery is improved. Effective doses double the percentage of rats able to bear weight on their hindlimbs. Next, we considered the half-life and distribution of NgR1(310)-Fc after bolus delivery to the lumbar intrathecal space. The protein is found throughout the neuraxis and has a tissue half-life of approximately 2 days in the rat, and 5 days in the nonhuman primate. At an intermittent, once every 4 day, lumbar bolus dosing schedule of 0.14 mg/kg/d, NgR1(310)-Fc promoted locomotor rat recovery from spinal cord contusion at least as effectively as continuous infusion in open field and grid walking tasks. Moreover, the intermittent lumbar NgR1(310)-Fc treatment increased the growth of raphespinal axons into the lumbar spinal cord after injury. Thus, human NgR1(310)-Fc provides effective treatment for recovery from traumatic SCI in this preclinical model with a simplified administration regimen that facilitates clinical testing.
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Affiliation(s)
- Xingxing Wang
- 1 Program in Cellular Neuroscience, Neurodegeneration & Repair, and Yale University School of Medicine , New Haven, Connecticut
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28
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Albrecht B, Brandeis D, Uebel-von Sandersleben H, Valko L, Heinrich H, Xu X, Drechsler R, Heise A, Kuntsi J, Müller UC, Asherson P, Steinhausen HC, Rothenberger A, Banaschewski T. Genetics of preparation and response control in ADHD: the role of DRD4 and DAT1. J Child Psychol Psychiatry 2014; 55:914-23. [PMID: 24521003 DOI: 10.1111/jcpp.12212] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/28/2013] [Indexed: 01/20/2023]
Abstract
BACKGROUND Difficulties with performance and brain activity related to attentional orienting (Cue-P3), cognitive or response preparation (Cue-CNV) and inhibitory response control (Nogo-P3) during tasks tapping executive functions are familial in ADHD and may represent endophenotypes. The aim of this study was to clarify the impact of dopamine receptor D4 (DRD4) and dopamine transporter (DAT1) gene polymorphisms on these processes in ADHD and control children. METHODS Behavioural and electrophysiological parameters from cued continuous performance tests with low and high attentional load were assessed in boys with ADHD combined type (N = 94) and controls without family history of ADHD (N = 31). Both groups were split for the presence of at least one DRD4 7-repeat allele and the DAT1 10-6 haplotype. RESULTS Children with ADHD showed diminished performance and lower Cue-P3, CNV and Nogo-P3 amplitudes. Children with DRD4 7R showed similar performance problems and lower Cue-P3 and CNV, but Nogo-P3 was not reduced. Children with the DAT1 10-6 haplotype had no difficulties with performance or Cue-P3 and CNV, but contrary to expectations increased Nogo-P3. There were no Genotype by ADHD interactions. CONCLUSIONS This study detected specific effects of DRD4 7R on performance and brain activity related to attentional orienting and response preparation, while DAT1 10-6 was associated with elevated brain activity related to inhibitory response control, which potentially compensates increased impulsivity. As these genotype effects were additive to the impact of ADHD, the current results indicate that DRD4 and DAT1 polymorphisms are functionally relevant risk factors for ADHD and presumably other disorders sharing these endophenotypes.
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Affiliation(s)
- Björn Albrecht
- Child and Adolescent Psychiatry, University Medical Center Göttingen, Göttingen, Germany; Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany
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29
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Pula B, Werynska B, Olbromski M, Muszczynska-Bernhard B, Chabowski M, Janczak D, Zabel M, Podhorska-Okolow M, Dziegiel P. Expression of Nogo isoforms and Nogo-B receptor (NgBR) in non-small cell lung carcinomas. Anticancer Res 2014; 34:4059-4068. [PMID: 25075030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Nogo-B was recently shown to be involved in proliferation, apoptosis and invasiveness of cancer cells, whereas its specific receptor (NgBR) was found to be up-regulated in estrogen receptor-α positive breast cancer. No data are currently available concerning their expression in non-small cell lung carcinomas (NSCLC). MATERIALS AND METHODS Expression of Nogo isoforms and NgBR was studied in 191 NSCLC. RESULTS Higher Nogo-A/B immunoreactivity was noted in cancer cells of squamous cell carcinomas (SQC) compared to adenocarcinomas (p<0.001). Stage II-IV tumors had the lowest Nogo-A/B expression (p<0.0001) compared to stage I cases. Nogo-A/B expression decreased with increasing SQC malignancy grade (p=0.026). Significant NgBR mRNA down-regulation was associated with larger primary tumor size (p=0.039), lymph node involvement (p=0.039) and advancement stage (p=0.0054). Low NgBR mRNA expression predicted poor patients outcome (p=0.029). CONCLUSION The current data may point to the involvement of Nogo isoforms and NgBR in the pathogenesis of NSCLC.
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Affiliation(s)
- Bartosz Pula
- Department of Histology and Embryology, Medical University, Wroclaw, Poland
| | - Bozena Werynska
- Department of Pulmonology and Pulmonary Tumors, Medical University, Wroclaw, Poland
| | - Mateusz Olbromski
- Department of Histology and Embryology, Medical University, Wroclaw, Poland
| | | | | | - Dariusz Janczak
- Surgery Department, 4th Military Teaching Hospital, Wroclaw, Poland Department of Clinical Proceedings, Medical University, Wroclaw, Poland
| | - Maciej Zabel
- Department of Histology and Embryology, Medical University, Wroclaw, Poland Department of Histology and Embryology, Medical University, Poznan, Poland
| | | | - Piotr Dziegiel
- Department of Histology and Embryology, Medical University, Wroclaw, Poland Department of Physiotherapy, Wroclaw University School of Physical Education, Wroclaw, Poland
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30
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Gou Z, Mi Y, Jiang F, Deng B, Yang J, Gou X. PirB is a novel potential therapeutic target for enhancing axonal regeneration and synaptic plasticity following CNS injury in mammals. J Drug Target 2014; 22:365-71. [PMID: 24405091 DOI: 10.3109/1061186x.2013.878939] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A major barrier to axonal regeneration in mammals is the unfavorable extracellular environment that develops following injury to the central nervous system (CNS). In particular, three myelin-associated inhibitory proteins (MAIs) - Nogo, myelin-associated glycoprotein (MAG) and oligodendrocyte myelin glycoprotein (OMgp) - are known to inhibit axonal regeneration and functional recovery. These MAIs share a common receptor, glycosylphosphatidylinositol-anchored Nogo receptor (NgR). However, paired immunoglobulin-like receptor B (PirB) - which was originally identified as a receptor for class I major histocompatibility complex (MHCI) in the immune system - is also expressed in neurones and plays a similarly inhibitory role in axonal regeneration and synaptic plasticity following CNS injury through its association with MAIs. Importantly, suppression of PirB activity through antibody antagonism or genetic means can partially relieve the inhibition of neurite outgrowth in vitro and in vivo. In this review, we present the molecular features, expression patterns and known signaling pathways of PirB, and we specifically focus on putative roles for PirB in the CNS and its potential as a target of molecular therapies for enhancing axonal regeneration and synaptic plasticity following CNS injury.
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Affiliation(s)
- Zhaoyu Gou
- College of Life Science, China West Normal University , Nanchong , China and
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31
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Abstract
Over the past decade, there has been substantial interest in the role of the integral myelin protein, Nogo-A, from fundamental neurobiological to clinical perspectives. It is now a well-known inhibitor of neurite outgrowth through its cognate receptor, Nogo receptor 1 (NgR1). Nogo-A can only signal through NgR1 upon heteromeric collaboration with p75(NTR), TROY, and LINGO-1 to induce axonal retraction. Both Nogo-A and NgR1 are expressed in multiple sclerosis (MS) lesions, suggesting that Nogo signaling may play a pivotal role in disease progression. There are several approaches targeting Nogo signaling in animal models of MS, and these therapeutic effects are currently in debate. One of the points of contention arises from the localization of the aforementioned signaling molecules, considering that MS and its animal models of disease are governed by inflammatory infiltration of the central nervous system. Furthermore, an impressive list of ligands for NgR1 continues to be compiled, possibly leading to disparities in the results obtained from the various animal models. In this review, we systematically dissect the complexities of Nogo signaling, which may be relevant in the future directions of neuroprotective therapies for MS.
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Affiliation(s)
- Jae Young Lee
- Monash Immunology and Stem Cell Laboratories, Monash University, Clayton, Victoria, Australia
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