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Updated: Oct 5, 2025
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Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
Published on: January 30, 2014
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Interaction of extraembryonic microglia and neonatal brain development
Radhika Sharma1, Ariel Mei2, Vineetha Mathew3
1Mother Infant Research Institute, Tufts Medical Center, 800 Washington St, Boston, MA 02111, United States of America; Department of Biology, Tufts University School of Arts and Sciences, 1 The Green, Medford, MA 02155, United States of America.
Experimental Neurology
|January 22, 2022
Summary
Primitive microglia originate from the yolk sac, distinct from other macrophages. Understanding their development is key for treating neonatal brain and neurodegenerative diseases.
Area of Science:
- Neuroscience
- Developmental Biology
- Immunology
Background:
- Microglia, the central nervous system's immune cells, maintain homeostasis but can contribute to neural damage.
- Their primitive precursors originate from the yolk sac, a distinct developmental pathway from other tissue macrophages.
- Microglial dysfunction is linked to neurodevelopmental and neurodegenerative diseases, with unclear mechanistic roles.
Purpose of the Study:
- To review the developmental origins and ontogeny of microglia.
- To discuss the role of microglia in neonatal brain development and neurodegenerative diseases.
- To highlight the importance of understanding species-specific differences for translational research.
Main Methods:
- Literature review of microglial development, ontogeny, and phylogeny.
- Comparative analysis of human and animal models.
- Discussion of in vitro microglia-like cell differentiation.
Main Results:
- Primitive microglia arise from extraembryonic progenitors in the yolk sac.
- Microglia play critical roles in embryonic vasculogenesis, immunosurveillance, and neurogenesis.
- Species-specific differences are crucial for understanding human health and disease.
Conclusions:
- Leveraging the extraembryonic origins of microglia is vital for understanding neurodevelopment and neurodegenerative diseases.
- Further research into molecular drivers may yield biomarkers and therapeutics for neonatal and neurodegenerative conditions.
- Developing protective measures specific to human microglia is a key translational goal.
