Aspects of excitatory/inhibitory synapses in multiple brain regions are correlated with levels of brain-derived neurotrophic factor/neurotrophin-3
Copyright © 2018 Elsevier Inc. All rights reserved..
Appropriate synapse formation during development is necessary for normal brain function, and synapse impairment is often associated with brain dysfunction. Brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3) are key factors in regulating synaptic development. We previously reported that BDNF/NT-3 secretion was enhanced by calcium-dependent activator protein for secretion 2 (CADPS2). Although BDNF/NT-3 and CADPS2 are co-expressed in various brain regions, the effect of Cadps2-deficiency on brain region-specific BDNF/NT-3 levels and synaptic development remains elusive. Here, we show developmental changes of BDNF/NT-3 levels and we assess disruption of excitatory/inhibitory synapses in multiple brain regions (cerebellum, hypothalamus, striatum, hippocampus, parietal cortex and prefrontal cortex) of Cadps2 knockout (KO) mice compared with wild-type (WT) mice. Compared with WT, BDNF levels in KO mice were reduced in young/adult hippocampus, but increased in young hypothalamus, while NT-3 levels were reduced in adult cerebellum and young hippocampus, but increased in adult parietal cortex. Immunofluorescence of vGluT1, an excitatory synapse marker, and vGAT, an inhibitory synapse marker, in adult KO showed that vGluT1 was higher in the cerebellum and parietal cortex but lower in the hippocampus, whereas vGAT was lower in the hippocampus and parietal cortex compared with WT. Immunolabeling for both vGluT1 and vGAT was increased in the parietal cortex but vGAT was decreased in the cerebellum in adult KO compared with WT. These data suggest that CADPS2-mediated secretion of BDNF/NT-3 may be involved in development and maturation of synapses and in the balance between inhibitory and excitatory synapses.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:509 |
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| Enthalten in: |
Biochemical and biophysical research communications - 509(2019), 2 vom: 05. Feb., Seite 429-434 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Shinoda, Yo [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 22.10.2019 Date Revised 22.10.2019 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.bbrc.2018.12.100 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM29223483X |
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| 100 | 1 | |a Shinoda, Yo |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Aspects of excitatory/inhibitory synapses in multiple brain regions are correlated with levels of brain-derived neurotrophic factor/neurotrophin-3 |
| 264 | 1 | |c 2019 | |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2018 Elsevier Inc. All rights reserved. | ||
| 520 | |a Appropriate synapse formation during development is necessary for normal brain function, and synapse impairment is often associated with brain dysfunction. Brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3) are key factors in regulating synaptic development. We previously reported that BDNF/NT-3 secretion was enhanced by calcium-dependent activator protein for secretion 2 (CADPS2). Although BDNF/NT-3 and CADPS2 are co-expressed in various brain regions, the effect of Cadps2-deficiency on brain region-specific BDNF/NT-3 levels and synaptic development remains elusive. Here, we show developmental changes of BDNF/NT-3 levels and we assess disruption of excitatory/inhibitory synapses in multiple brain regions (cerebellum, hypothalamus, striatum, hippocampus, parietal cortex and prefrontal cortex) of Cadps2 knockout (KO) mice compared with wild-type (WT) mice. Compared with WT, BDNF levels in KO mice were reduced in young/adult hippocampus, but increased in young hypothalamus, while NT-3 levels were reduced in adult cerebellum and young hippocampus, but increased in adult parietal cortex. Immunofluorescence of vGluT1, an excitatory synapse marker, and vGAT, an inhibitory synapse marker, in adult KO showed that vGluT1 was higher in the cerebellum and parietal cortex but lower in the hippocampus, whereas vGAT was lower in the hippocampus and parietal cortex compared with WT. Immunolabeling for both vGluT1 and vGAT was increased in the parietal cortex but vGAT was decreased in the cerebellum in adult KO compared with WT. These data suggest that CADPS2-mediated secretion of BDNF/NT-3 may be involved in development and maturation of synapses and in the balance between inhibitory and excitatory synapses | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a BDNF | |
| 650 | 4 | |a CADPS2 | |
| 650 | 4 | |a Excitatory synapse | |
| 650 | 4 | |a Inhibitory synapse | |
| 650 | 4 | |a NT-3 | |
| 650 | 7 | |a Bdnf protein, mouse |2 NLM | |
| 650 | 7 | |a Brain-Derived Neurotrophic Factor |2 NLM | |
| 650 | 7 | |a CAPS2 protein, mouse |2 NLM | |
| 650 | 7 | |a Calcium-Binding Proteins |2 NLM | |
| 650 | 7 | |a Nerve Tissue Proteins |2 NLM | |
| 650 | 7 | |a Neurotrophin 3 |2 NLM | |
| 650 | 7 | |a Slc17a7 protein, mouse |2 NLM | |
| 650 | 7 | |a Vesicular Glutamate Transport Protein 1 |2 NLM | |
| 650 | 7 | |a Vesicular Inhibitory Amino Acid Transport Proteins |2 NLM | |
| 650 | 7 | |a Viaat protein, mouse |2 NLM | |
| 700 | 1 | |a Sadakata, Tetsushi |e verfasserin |4 aut | |
| 700 | 1 | |a Yagishita, Kaori |e verfasserin |4 aut | |
| 700 | 1 | |a Kinameri, Emi |e verfasserin |4 aut | |
| 700 | 1 | |a Katoh-Semba, Ritsuko |e verfasserin |4 aut | |
| 700 | 1 | |a Sano, Yoshitake |e verfasserin |4 aut | |
| 700 | 1 | |a Furuichi, Teiichi |e verfasserin |4 aut | |
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