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Hashimoto A, Kawamura N, Tarusawa E, Takeda I, Aoyama Y, Ohno N, Inoue M, Kagamiuchi M, Kato D, Matsumoto M, Hasegawa Y, Nabekura J, Schaefer A, Moorhouse AJ, Yagi T, Wake H. Microglia enable cross-modal plasticity by removing inhibitory synapses. Cell Rep 2023; 42:112383. [PMID: 37086724 DOI: 10.1016/j.celrep.2023.112383] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 02/13/2023] [Accepted: 03/28/2023] [Indexed: 04/24/2023] Open
Abstract
Cross-modal plasticity is the repurposing of brain regions associated with deprived sensory inputs to improve the capacity of other sensory modalities. The functional mechanisms of cross-modal plasticity can indicate how the brain recovers from various forms of injury and how different sensory modalities are integrated. Here, we demonstrate that rewiring of the microglia-mediated local circuit synapse is crucial for cross-modal plasticity induced by visual deprivation (monocular deprivation [MD]). MD relieves the usual inhibition of functional connectivity between the somatosensory cortex and secondary lateral visual cortex (V2L). This results in enhanced excitatory responses in V2L neurons during whisker stimulation and a greater capacity for vibrissae sensory discrimination. The enhanced cross-modal response is mediated by selective removal of inhibitory synapse terminals on pyramidal neurons by the microglia in the V2L via matrix metalloproteinase 9 signaling. Our results provide insights into how cortical circuits integrate different inputs to functionally compensate for neuronal damage.
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Affiliation(s)
- Akari Hashimoto
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Nanami Kawamura
- KOKORO-Biology Group, Laboratories for Integrated Biology, Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Etsuko Tarusawa
- KOKORO-Biology Group, Laboratories for Integrated Biology, Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Ikuko Takeda
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Yuki Aoyama
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Nobuhiko Ohno
- Department of Anatomy, Division of Histology and Cell Biology, Jichi Medical University, Shimotsuke 329-0498, Japan; Division of Ultrastructural Research, National Institute for Physiological Sciences, Okazaki 444-8585, Japan
| | - Mio Inoue
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Mai Kagamiuchi
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Daisuke Kato
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Mami Matsumoto
- Section of Electron Microscopy, Supportive Center for Brain Research, National Institute for Physiological Sciences, Okazaki 444-8585, Japan; Department of Developmental and Regenerative Neurobiology, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
| | - Yoshihiro Hasegawa
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Junichi Nabekura
- Division of Homeostatic Development, National Institute for Physiological Sciences, Okazaki 444-8585, Japan; Department of Physiological Sciences, Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - Anne Schaefer
- Center for Glial Biology, Department of Neuroscience and Psychiatry, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029-6574, USA; Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany
| | - Andrew J Moorhouse
- School of Biomedical Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Takeshi Yagi
- KOKORO-Biology Group, Laboratories for Integrated Biology, Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Hiroaki Wake
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan; Division of Multicellular Circuit Dynamics, National Institute for Physiological Sciences, Okazaki 444-8585, Japan; Center for Optical Scattering Image Science, Kobe University, Kobe 657-8501, Japan; Department of Physiological Sciences, Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan; Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan.
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Hayes CA, Morgan NI, Thomas KC, Pushie MJ, Vijayasankar A, Ashmore BG, Wontor K, De Leon MA, Ashpole NM. Neuronal and Astrocyte Insulin-like Growth Factor-1 Signaling Differentially Modulates Ischemic Stroke Damage. bioRxiv 2023:2023.04.02.535245. [PMID: 37034764 PMCID: PMC10081310 DOI: 10.1101/2023.04.02.535245] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Ischemic stroke is a leading cause of death and disability, as therapeutic options for mitigating the long-term deficits precipitated by the event remain limited. Acute administration of the neuroendocrine modulator insulin-like growth factor-1 (IGF-1) attenuates ischemic stroke damage in preclinical models, and clinical studies suggest IGF-1 can reduce the risk of stroke and improve overall outcomes. The cellular mechanism by which IGF-1 exerts this protection is poorly defined, as all cells within the neurovascular unit express the IGF-1 receptor. We hypothesize that the functional regulation of both neurons and astrocytes by IGF-1 is critical in minimizing damage in ischemic stroke. To test this, we utilized inducible astrocyte-specific or neuron-specific transgenic mouse models to selectively reduce IGF-1R in the adult mouse brain prior to photothrombotic stroke. Acute changes in blood brain barrier permeability, microglial activation, systemic inflammation, and biochemical composition of the brain were assessed 3 hours following photothrombosis, and significant protection was observed in mice deficient in neuronal and astrocytic IGF-1R. When the extent of tissue damage and sensorimotor dysfunction was assessed for 3 days following stroke, only the neurological deficit score continued to show improvements, and the extent of improvement was enhanced with additional IGF-1 supplementation. Overall, results indicate that neuronal and astrocytic IGF-1 signaling influences stroke damage but IGF-1 signaling within these individual cell types is not required for minimizing tissue damage or behavioral outcome.
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Affiliation(s)
- Cellas A. Hayes
- Department of BioMolecular Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 386671
| | - Nyah I. Morgan
- Department of BioMolecular Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 386671
| | - Kamryn C. Thomas
- Department of BioMolecular Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 386671
| | - M. Jake. Pushie
- Department of Surgery, College of Medicine, University of Saskatchewan, SK S7N 5E5 Canada
| | - Akshaya Vijayasankar
- Department of BioMolecular Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 386671
| | - Brandon G. Ashmore
- Department of BioMolecular Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 386671
| | - Kendall Wontor
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Miguel A. De Leon
- Department of BioMolecular Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 386671
| | - Nicole M. Ashpole
- Department of BioMolecular Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 386671
- Research Institute of Pharmaceutical Sciences, University of Mississippi School of Pharmacy, University of Mississippi, University, MS 38677
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Ni H, Xu M, Xie K, Fei Y, Deng H, He Q, Wang T, Liu S, Zhu J, Xu L, Yao M. Liquiritin Alleviates Pain Through Inhibiting CXCL1/CXCR2 Signaling Pathway in Bone Cancer Pain Rat. Front Pharmacol 2020; 11:436. [PMID: 32390832 PMCID: PMC7193085 DOI: 10.3389/fphar.2020.00436] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [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: 12/06/2019] [Accepted: 03/20/2020] [Indexed: 01/06/2023] Open
Abstract
Bone cancer pain (BCP) is an intractable clinical problem, and lacked effective drugs for treating it. Recent research showed that several chemokines in the spinal cord are involved in the pathogenesis of BCP. In this study, the antinociceptive effects of liquiritin, which is an active component extracted from Glycyrrhizae Radix, were tested and the underlying mechanisms targeting spinal dorsal horn (SDH) were investigated. The BCP group displayed a significant decrease in the mechanical withdrawal threshold on days 6, 12, and 18 when compared with sham groups. Intrathecal administration of different doses of liquiritin alleviated mechanical allodynia in BCP rats. The results of immunofluorescent staining and western blotting showed that liquiritin inhibited BCP-induced activation of astrocytes in the spinal cord. Moreover, intrathecal administration of liquiritin effectively inhibited the activation of CXCL1/CXCR2 signaling pathway and production of IL-1β and IL-17 in BCP rats. In astroglial-enriched cultures, Lipopolysaccharides (LPS) elicited the release of chemokine CXCL1, and the release was decreased in a dose-dependent manner by liquiritin. In primary neurons, liquiritin indirectly reduced the increase of CXCR2 by astroglial-enriched-conditioned medium but not directly on the CXCR2 target site. These results suggested that liquiritin effectively attenuated BCP in rats by inhibiting the activation of spinal astrocytic CXCL1 and neuronal CXCR2 pathway. These findings provided evidence regarding the the antinociceptive effect of liquiritin on BCP.
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Affiliation(s)
- Huadong Ni
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Miao Xu
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Keyue Xie
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Yong Fei
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Housheng Deng
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Qiuli He
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Tingting Wang
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Songlei Liu
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Jianjun Zhu
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Longsheng Xu
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Ming Yao
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing, China
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Dong X, Jin S, Shao Z. Glia Promote Synaptogenesis through an IQGAP PES-7 in C. elegans. Cell Rep 2020; 30:2614-2626.e2. [PMID: 32101740 DOI: 10.1016/j.celrep.2020.01.102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 06/15/2019] [Revised: 11/11/2019] [Accepted: 01/29/2020] [Indexed: 11/25/2022] Open
Abstract
Synapses are fundamental to the normal function of the nervous system. Glia play a pivotal role in regulating synaptic formation. However, how presynaptic neurons assemble synaptic structure in response to the glial signals remains largely unexplored. To address this question, we use cima-1 mutant C. elegans as an in vivo model, in which the astrocyte-like VCSC glial processes ectopically reach an asynaptic neurite region and promote presynaptic formation there. Through an RNAi screen, we find that the Rho GTPase CDC-42 and IQGAP PES-7 are required in presynaptic neurons for VCSC glia-induced presynaptic formation. In addition, we find that cdc-42 and pes-7 are also required for normal synaptogenesis during postembryonic developmental stages. PES-7 activated by CDC-42 promotes presynaptic formation, most likely through regulating F-actin assembly. Given the evolutionary conservation of CDC-42 and IQGAPs, we speculate that our findings in C. elegans apply to vertebrates.
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Affiliation(s)
- Xiaohua Dong
- Department of Neurosurgery, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Shuhan Jin
- Department of Neurosurgery, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Zhiyong Shao
- Department of Neurosurgery, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
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Lalo U, Bogdanov A, Pankratov Y. Age- and Experience-Related Plasticity of ATP-Mediated Signaling in the Neocortex. Front Cell Neurosci 2019; 13:242. [PMID: 31191257 PMCID: PMC6548886 DOI: 10.3389/fncel.2019.00242] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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] [Received: 03/17/2019] [Accepted: 05/15/2019] [Indexed: 12/23/2022] Open
Abstract
There is growing recognition of the important role of interaction between neurons and glial cells for brain longevity. The extracellular ATP have been shown to bring significant contribution into bi-directional glia-neuron communications, in particular into astrocyte-driven modulation of synaptic plasticity. To elucidate a putative impact of brain aging on neuron-glia networks, we explored the aging-related plasticity of the purinoreceptors-mediated signaling in cortical neurons and astrocytes. We investigated the age- and experience-related alterations in purinergic components of neuronal synaptic currents and astroglial calcium signaling in the layer2/3 of neocortex of mice exposed to the mild caloric restriction (CR) and environmental enrichment (EE) which included ad libitum physical exercise. We observed the considerable age-related decline in the neuronal P2X receptor-mediated miniature spontaneous currents which originated from the release of ATP from both synapses and astrocytes. We also found out that purinergic astrocytic Ca2+-signaling underwent the substantial age-related decline but EE and CR rescued astroglial signaling, in particular mediated by P2X1, P2X1/5, and P2Y1 receptors. Our data showed that age-related attenuation in the astroglial calcium signaling caused a substantial decrease in the exocytosis of ATP leading to impairment of astroglia-derived purinergic modulation of excitatory synaptic currents and GABAergic tonic inhibitory currents. On a contrary, exposure to EE and CR, which enhanced purinergic astrocytic calcium signaling, up-regulated the excitatory and down-regulated the inhibitory currents in neurons of old mice, thus counterbalancing the impact of aging on synaptic signaling. Combined, our results strongly support the physiological importance of ATP-mediated signaling for glia-neuron interactions and brain function. Our data also show that P2 purinoreceptor-mediated communication between astrocytes and neurons in the neocortex undergoes remodeling during brain aging and decrease in the ATP release may contribute to the age-related impairment of synaptic transmission.
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Affiliation(s)
- Ulyana Lalo
- School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry, United Kingdom
| | - Alexander Bogdanov
- Institute for Chemistry and Biology, Immanuel Kant Baltic Federal University, Kaliningrad, Russia
| | - Yuriy Pankratov
- School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry, United Kingdom
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Abstract
Cells of the oligodendrocyte lineage, which form the myelinating glia of the vertebrate central nervous system, undergo a stepwise developmental progression entailing specification from neuroepithelial precursors, proliferation, migration to expand and distribute the population, and differentiation to ensheath axons with myelin. Understanding the genetic mechanisms that regulate each of these steps during development is important, because this might lead to therapies to promote remyelination following neural injury or disease. Genetic studies in mice indicated that the Sox10 transcription factor is required during the differentiation stage to promote myelin gene expression. However, whether Sox10 also promotes other features of oligodendroctye differentiation remained unknown. In this study, we used time-lapse imaging to investigate the behavior and fates of oligodendrocyte lineage cells in zebrafish embryos and larvae that lacked Sox10 function. This revealed that the myelinating subset of oligodendrocyte progenitor cells (OPCs) migrates, divides, and wraps axons normally, but then dies. Nonmyelinating oligodendrocyte progenitors divided more frequently, maintaining a normal population size. New oligodendrocytes produced by these progenitors wrapped axons and survived, but did not express myelin genes at high levels. We conclude that, in addition to promoting myelin gene expression, Sox10 function is necessary for the survival of myelinating oligodedrocytes subsequent to axon wrapping but is not required for the survival of nonmyelinating OPCs.
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Affiliation(s)
- NORIO TAKADA
- Department of Pediatrics, University of Colorado Denver Anshutz Medical Campus, Aurora, Colorado
| | - SARAH KUCENAS
- Department of Biology, University of Virginia, Charlottesville, Virginia
| | - BRUCE APPEL
- Department of Pediatrics, University of Colorado Denver Anshutz Medical Campus, Aurora, Colorado
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