The in vivo contribution of motor neuron TrkB receptors to mutant SOD1 motor neuron disease

Brain-derived neurotrophic factor (BDNF) and its receptor tropomyosin-related kinase B (TrkB) are widely expressed in the vertebrate nervous system and play a central role in mature neuronal function. In vitro BDNF/TrkB signaling promotes neuronal survival and can help neurons resist toxic insults....

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Veröffentlicht in:Human molecular genetics 2011-11, Vol.20 (21), p.4116-4131
Hauptverfasser: Zhai, Jinbin, Zhou, Weiguo, Li, Jian, Hayworth, Christopher R., Zhang, Lei, Misawa, Hidemi, Klein, Rudiger, Scherer, Steven S., Balice-Gordon, Rita J., Kalb, Robert Gordon
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container_end_page 4131
container_issue 21
container_start_page 4116
container_title Human molecular genetics
container_volume 20
creator Zhai, Jinbin
Zhou, Weiguo
Li, Jian
Hayworth, Christopher R.
Zhang, Lei
Misawa, Hidemi
Klein, Rudiger
Scherer, Steven S.
Balice-Gordon, Rita J.
Kalb, Robert Gordon
description Brain-derived neurotrophic factor (BDNF) and its receptor tropomyosin-related kinase B (TrkB) are widely expressed in the vertebrate nervous system and play a central role in mature neuronal function. In vitro BDNF/TrkB signaling promotes neuronal survival and can help neurons resist toxic insults. Paradoxically, BDNF/TrkB signaling has also been shown, under certain in vitro circumstances, to render neurons vulnerable to insults. We show here that in vivo conditional deletion of TrkB from mature motor neurons attenuates mutant superoxide dismutase 1 (SOD1) toxicity. Mutant SOD1 mice lacking motor neuron TrkB live a month longer than controls and retain motor function for a longer period, particularly in the early phase of the disease. These effects are subserved by slowed motor neuron loss, persistence of neuromuscular junction integrity and reduced astrocytic and microglial reactivity within the spinal cord. These results suggest that manipulation of BDNF/TrkB signaling might have therapeutic efficacy in motor neuron diseases.
doi_str_mv 10.1093/hmg/ddr335
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Biological and molecular evolution ; Inclusion Bodies - metabolism ; Inflammation - complications ; Inflammation - pathology ; Inflammation - physiopathology ; Integrases - metabolism ; Interneurons - metabolism ; Interneurons - pathology ; Longevity ; Medical sciences ; Mice ; Mice, Knockout ; Miscellaneous ; Molecular and cellular biology ; Motor Activity ; Motor neuron disease ; Motor Neuron Disease - complications ; Motor Neuron Disease - enzymology ; Motor Neuron Disease - pathology ; Motor Neuron Disease - physiopathology ; Motor Neurons - metabolism ; Motor Neurons - pathology ; Mutation - genetics ; Nervous system ; Neurology ; Neuromuscular Junction - metabolism ; Neuromuscular Junction - pathology ; Neuromuscular junctions ; Receptor mechanisms ; Receptor, trkB - metabolism ; Recombination, Genetic - genetics ; Spinal cord ; Spinal Cord - metabolism ; Spinal Cord - pathology ; Superoxide dismutase ; Superoxide Dismutase - genetics ; Superoxide Dismutase-1 ; Toxicity ; TrkB receptors ; Ubiquitin - metabolism ; Ubiquitination ; Vesicular Acetylcholine Transport Proteins - metabolism</subject><ispartof>Human molecular genetics, 2011-11, Vol.20 (21), p.4116-4131</ispartof><rights>The Author 2011. 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In vitro BDNF/TrkB signaling promotes neuronal survival and can help neurons resist toxic insults. Paradoxically, BDNF/TrkB signaling has also been shown, under certain in vitro circumstances, to render neurons vulnerable to insults. We show here that in vivo conditional deletion of TrkB from mature motor neurons attenuates mutant superoxide dismutase 1 (SOD1) toxicity. Mutant SOD1 mice lacking motor neuron TrkB live a month longer than controls and retain motor function for a longer period, particularly in the early phase of the disease. These effects are subserved by slowed motor neuron loss, persistence of neuromuscular junction integrity and reduced astrocytic and microglial reactivity within the spinal cord. 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Biological and molecular evolution</subject><subject>Inclusion Bodies - metabolism</subject><subject>Inflammation - complications</subject><subject>Inflammation - pathology</subject><subject>Inflammation - physiopathology</subject><subject>Integrases - metabolism</subject><subject>Interneurons - metabolism</subject><subject>Interneurons - pathology</subject><subject>Longevity</subject><subject>Medical sciences</subject><subject>Mice</subject><subject>Mice, Knockout</subject><subject>Miscellaneous</subject><subject>Molecular and cellular biology</subject><subject>Motor Activity</subject><subject>Motor neuron disease</subject><subject>Motor Neuron Disease - complications</subject><subject>Motor Neuron Disease - enzymology</subject><subject>Motor Neuron Disease - pathology</subject><subject>Motor Neuron Disease - physiopathology</subject><subject>Motor Neurons - metabolism</subject><subject>Motor Neurons - pathology</subject><subject>Mutation - genetics</subject><subject>Nervous system</subject><subject>Neurology</subject><subject>Neuromuscular Junction - metabolism</subject><subject>Neuromuscular Junction - pathology</subject><subject>Neuromuscular junctions</subject><subject>Receptor mechanisms</subject><subject>Receptor, trkB - metabolism</subject><subject>Recombination, Genetic - genetics</subject><subject>Spinal cord</subject><subject>Spinal Cord - metabolism</subject><subject>Spinal Cord - pathology</subject><subject>Superoxide dismutase</subject><subject>Superoxide Dismutase - genetics</subject><subject>Superoxide Dismutase-1</subject><subject>Toxicity</subject><subject>TrkB receptors</subject><subject>Ubiquitin - metabolism</subject><subject>Ubiquitination</subject><subject>Vesicular Acetylcholine Transport Proteins - metabolism</subject><issn>0964-6906</issn><issn>1460-2083</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kU1LxDAQhoMouq5e_AGSiwhC3Xx02-Yi-K0geHA9eQhpMnWjbbMm7YL_3siuu3rxNMzMwzsfL0IHlJxSIvho2ryOjPGcjzfQgKYZSRgp-CYaEJGlSSZItoN2Q3gjhGYpz7fRDqMFzUQqBuhlMgVsWzy3c4e1aztvy76zrsWuwo3rnMct9D7mE_9-gT1omMViwJ3DTd-ptsNPj1f0L2psABVgD21Vqg6wv4xD9HxzPbm8Sx4eb-8vzx8SPebjLilFkdMiZYpmORiuzVjlglPBC8oqY0RaAgNKS5NDlQpRUGUIMK4qiBVtBB-is4XurC8bMBriFaqWM28b5T-lU1b-7bR2Kl_dXPL4hyxlUeB4KeDdRw-hk40NGupateD6IAUjuaCi-CZPFqT2LgQP1WoKJfLbDBnNkAszInz4e68V-vP9CBwtARW0qiuvWm3DmotWMsHzNef62X8DvwDJwqHf</recordid><startdate>20111101</startdate><enddate>20111101</enddate><creator>Zhai, Jinbin</creator><creator>Zhou, Weiguo</creator><creator>Li, Jian</creator><creator>Hayworth, Christopher R.</creator><creator>Zhang, Lei</creator><creator>Misawa, Hidemi</creator><creator>Klein, Rudiger</creator><creator>Scherer, Steven S.</creator><creator>Balice-Gordon, Rita J.</creator><creator>Kalb, Robert Gordon</creator><general>Oxford University Press</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TK</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>5PM</scope></search><sort><creationdate>20111101</creationdate><title>The in vivo contribution of motor neuron TrkB receptors to mutant SOD1 motor neuron disease</title><author>Zhai, Jinbin ; Zhou, Weiguo ; Li, Jian ; Hayworth, Christopher R. ; Zhang, Lei ; Misawa, Hidemi ; Klein, Rudiger ; Scherer, Steven S. ; Balice-Gordon, Rita J. ; Kalb, Robert Gordon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c535t-b9871842a167ed3cd5a793193812fdd94be2e11bd7ef49981ad0e23afed7ecd93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Amino Acid Substitution</topic><topic>Animals</topic><topic>Axons - metabolism</topic><topic>Axons - pathology</topic><topic>Biological and medical sciences</topic><topic>Brain-derived neurotrophic factor</topic><topic>Cell receptors</topic><topic>Cell structures and functions</topic><topic>Cell survival</topic><topic>Degenerative and inherited degenerative diseases of the nervous system. 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source Oxford University Press Journals All Titles (1996-Current); MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects Amino Acid Substitution
Animals
Axons - metabolism
Axons - pathology
Biological and medical sciences
Brain-derived neurotrophic factor
Cell receptors
Cell structures and functions
Cell survival
Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases
Denervation
Disease Progression
Fundamental and applied biological sciences. Psychology
Ganglion Cysts - metabolism
Ganglion Cysts - pathology
Gene Deletion
Genetics of eukaryotes. Biological and molecular evolution
Inclusion Bodies - metabolism
Inflammation - complications
Inflammation - pathology
Inflammation - physiopathology
Integrases - metabolism
Interneurons - metabolism
Interneurons - pathology
Longevity
Medical sciences
Mice
Mice, Knockout
Miscellaneous
Molecular and cellular biology
Motor Activity
Motor neuron disease
Motor Neuron Disease - complications
Motor Neuron Disease - enzymology
Motor Neuron Disease - pathology
Motor Neuron Disease - physiopathology
Motor Neurons - metabolism
Motor Neurons - pathology
Mutation - genetics
Nervous system
Neurology
Neuromuscular Junction - metabolism
Neuromuscular Junction - pathology
Neuromuscular junctions
Receptor mechanisms
Receptor, trkB - metabolism
Recombination, Genetic - genetics
Spinal cord
Spinal Cord - metabolism
Spinal Cord - pathology
Superoxide dismutase
Superoxide Dismutase - genetics
Superoxide Dismutase-1
Toxicity
TrkB receptors
Ubiquitin - metabolism
Ubiquitination
Vesicular Acetylcholine Transport Proteins - metabolism
title The in vivo contribution of motor neuron TrkB receptors to mutant SOD1 motor neuron disease
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