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Updated: Dec 28, 2025
Dissection and Isolation of Murine Glia from Multiple Central Nervous System Regions
Published on: June 4, 2020
Microglia heterogeneity along a spatio-temporal axis: More questions than answers
Aymeric Silvin1, Florent Ginhoux1,2
1Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, IMMUNOS Building #3-4, BIOPOLIS, 138648, Singapore.
Abstract:
Microglia are resident macrophages of the central nervous system; they arise during early embryonic development and persist throughout adulthood. These unique cells provide developmental support, contribute to adult brain homeostasis and impart immune protection during infection. Dysregulated microglia are implicated in the pathophysiology of several neurological disorders, including Alzheimer disease, and as such, a better understanding of their regulation and function is required for rational therapeutic design. Recent studies have highlighted the various heterogeneous aspects of microglia, such as their wide differentiation spectrum from early embryogenesis to adulthood, their location in different brain regions and their responses to ageing, infection and inflammation. In this review, we discuss microglial heterogeneity in time and space and highlight the remaining questions arising from such heterogeneity.
Insights
Microglia, the brain's immune cells, show diverse characteristics throughout life and across different brain regions. Understanding this microglial heterogeneity is crucial for developing treatments for neurological disorders.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Microglia are the primary immune cells of the central nervous system.
- They originate in early embryonic development and persist into adulthood.
- Microglia play vital roles in brain development, homeostasis, and immune defense.
Purpose of the Study:
- To review the heterogeneous aspects of microglia.
- To discuss microglial heterogeneity across time (development to adulthood) and space (brain regions).
- To identify unanswered questions regarding microglial diversity.
Main Methods:
- Literature review of recent studies on microglia.
- Analysis of microglial differentiation, localization, and responses.
- Synthesis of information on microglial heterogeneity.
Main Results:
- Microglia exhibit significant heterogeneity in their differentiation spectrum.
- Microglial characteristics vary based on brain region and physiological state (ageing, infection, inflammation).
- This heterogeneity presents challenges and opportunities for understanding neurological diseases.
Conclusions:
- Microglial heterogeneity is a key factor in central nervous system function and disease.
- Further research into temporal and spatial variations in microglia is essential.
- A deeper understanding of microglial diversity is needed for effective therapeutic strategies in neurological disorders.
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