Microglia as therapeutic target in central nervous system disorders

Oluwaseun Fatoba1, Takahide Itokazu2, Toshihide Yamashita3

  • 1Department of Molecular Neuroscience, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan; WPI-Immunology Frontier Research Center, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan.

Insights

Microglia, the immune cells of the central nervous system (CNS), exhibit diverse behaviors in various CNS disorders. Understanding this heterogeneity is key to developing targeted microglia-modulating therapies for neurological conditions.

Area of Science:

  • Neuroimmunology
  • Cellular Biology
  • Neuroscience

Background:

  • Chronic microglial activation is implicated in the pathogenesis of numerous central nervous system (CNS) disorders.
  • Microglia display significant phenotypic diversity and functional complexity within the diseased CNS environment.

Purpose of the Study:

  • To review current knowledge on microglial roles in CNS homeostasis from development through adulthood.
  • To discuss the heterogeneity of microglial phenotypes across various CNS disorders, including neurodegenerative diseases, demyelinating diseases, CNS trauma, and epilepsy.
  • To explore the potential of exploiting disease-specific microglial functional heterogeneity for therapeutic interventions.

Main Methods:

  • Literature review of up-to-date research on microglial function and heterogeneity in CNS disorders.
  • Synthesis of information regarding microglial contributions to CNS homeostasis and pathology.
  • Analysis of phenotypic and functional diversity of microglia in specific disease contexts.

Main Results:

  • Microglia play critical roles in maintaining CNS homeostasis during development and adulthood.
  • Significant heterogeneity exists in microglial phenotypes and functions depending on the specific CNS pathology.
  • This heterogeneity is evident in neurodegenerative diseases, demyelinating diseases, CNS trauma, and epilepsy.

Conclusions:

  • Understanding the diverse roles and phenotypes of microglia in different CNS disorders is essential.
  • The pathology-specific heterogeneity of microglial function presents a promising avenue for developing novel therapeutic strategies.
  • Targeting specific microglial functions could lead to more effective treatments for a range of CNS disorders.

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