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Updated: Mar 22, 2026
Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
Published on: January 30, 2014
The force awakens: insights into the origin and formation of microglia
Tuan Leng Tay1, Nora Hagemeyer1, Marco Prinz2
1Institute of Neuropathology, University of Freiburg, Germany.
Abstract:
Microglia are tissue resident macrophages of the central nervous system (CNS) that maintain homeostasis and respond to immune challenges. New genetic fate mapping tools have revealed a yolk sac origin of microglia. Once established in the CNS, microglia persist throughout the lifetime of the organism behind the blood-brain barrier and maintain themselves by self-renewal. Recent studies uncovered a broad spectrum of microglial functions that are influenced by the dynamism of brain formation and neuronal wiring. This review focuses on current findings concerning microglia origin and formation during development and discusses the factors important for microglia survival and function.
Insights
Microglia, the brain's immune cells, originate from the yolk sac and persist throughout life. This review explores their development, self-renewal, and crucial roles in brain function.
Area of Science:
- Neuroscience
- Immunology
- Developmental Biology
Background:
- Microglia are the primary immune cells residing in the central nervous system (CNS).
- They play vital roles in maintaining CNS homeostasis and responding to immune stimuli.
- Their origin and developmental dynamics are critical for understanding brain health.
Purpose of the Study:
- To review the developmental origin and formation of microglia.
- To discuss factors influencing microglial survival and function throughout life.
- To highlight the impact of brain development on microglial activities.
Main Methods:
- Genetic fate mapping techniques to trace microglial origins.
- Review of recent scientific literature on microglial biology.
- Analysis of factors affecting microglial persistence and function.
Main Results:
- Microglia originate from the yolk sac during embryonic development.
- They are long-lived cells that self-renew within the CNS.
- Microglial functions are intricately linked to brain formation and neuronal development.
Conclusions:
- Understanding microglial origin is key to comprehending their lifelong roles.
- Factors governing microglial survival and function are essential for CNS health.
- This review consolidates current knowledge on microglia development and their dynamic functions.
