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Unique Properties of Glial Cells in the CNS

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Neurobiology".

Deadline for manuscript submissions: closed (20 December 2024) | Viewed by 1416

Special Issue Editor


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Guest Editor
Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida-Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
Interests: CNS; glial cell

Special Issue Information

Dear Colleagues,

Emerging evidence suggests that glial cells, such as astrocytes, microglia, oligodendrocytes, and their precursor cells, are not simply a group of cells filling brain tissue, as previously thought, but a heterogeneous multipotent population with different properties in different brain regions. Recently, many reports have emerged showing that these glial cells have roles and unique functions that they were previously thought not to be absent. Specifically, some glial cells appear to be electro-sensitive, have phagocytic functions, support the integrity of the blood–brain barrier, form synapses with neurons, and induce, mediate, or inhibit CNS inflammation. However, compared to neurons, many aspects of glial cells remain unexplored. This Special Issue will, therefore, focus on the “unique properties” of glial cells, discussing them beyond their previously well-known roles and their contribution to CNS homeostasis, and outline how functional alterations of glial cells play an important role in many neurological disorders.

Dr. Hisashi Shirakawa
Guest Editor

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Keywords

  • glial cells
  • astrocytes
  • microglia
  • oligodendrocytes and their precursor cells
  • unique properties
  • neurological disorders
  • CNS inflammation

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Published Papers (1 paper)

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Research

21 pages, 5444 KB  
Article
Transcriptomic Analysis Divulges Differential Expressions of Microglial Genes After Microglial Repopulation in Mice
by Muhammad Tariq Hafeez, Hao Gao, Furong Ju, Fujian Qi, Ting Li and Shengxiang Zhang
Int. J. Mol. Sci. 2025, 26(4), 1494; https://doi.org/10.3390/ijms26041494 - 11 Feb 2025
Viewed by 981
Abstract
Microglia are key immune cells in the central nervous system (CNS) and maintain hemostasis in physiological conditions. Microglial depletion leads to rapid repopulation, but the gene expression and signaling pathways related to repopulation remain unclear. Here, we used RNA sequencing (RNA-Seq) analysis to [...] Read more.
Microglia are key immune cells in the central nervous system (CNS) and maintain hemostasis in physiological conditions. Microglial depletion leads to rapid repopulation, but the gene expression and signaling pathways related to repopulation remain unclear. Here, we used RNA sequencing (RNA-Seq) analysis to profile the transcriptome of microglia-depleted tissue by taking advantage of a conditional genetic microglial depletion model (CX3CR1CreER/+ system). Differential gene expression (DGE) sequencing analysis showed that 1226 genes were differentially up- and downregulated in both groups compared to control. Our data demonstrated that many microglial genes were highly regulated on day 3 after depletion but the numbers of differentially expressed genes were reduced by day 7. Gene ontology (GO) analysis categorized these differentially expressed genes on day 3 and day 7 to the specific biological processes, such as cell proliferation, cell activation, and cytokine and chemokine production. DGE analysis indicated that specific genes related to proliferation were regulated after depletion. Consistent with the changes in transcriptome, the histological analysis of transgenic mice revealed that the microglia after depletion undergo proliferation and activation from day 3 to day 7. Collectively, these results suggest that transcriptomic changes in microglial genes during depletion have a profound implication for the renewal and activation of microglia and may help to understand the regulatory mechanism of microglial activation in disease conditions. Full article
(This article belongs to the Special Issue Unique Properties of Glial Cells in the CNS)
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