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Microglial Characterization in Transient Human Neurodevelopmental Structures.

David A Menassa1,2, Janja Kopić2, Alisa Junaković2

  • 1The Queen's College, University of Oxford, Oxford, UK.

Developmental Neuroscience
|January 31, 2023
PubMed
Summary

Researchers studied microglia, the brain’s immune cells, in developing human brain structures. They identified diverse microglial shapes and inferred their roles in neurodevelopment, offering insights into brain development and disease origins.

Keywords:
ConnectivityHuman neurodevelopmentMicrogliaSubpial granular layerSubplate zone

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Immunology

Background:

  • Human neurodevelopment involves transient structures crucial for establishing neural connectivity.
  • The subpial granular layer and subplate zone are key transient structures in the human forebrain.
  • Microglia play dynamic roles throughout brain development.

Purpose of the Study:

  • To describe the diversity of microglial morphologies within the human subpial granular layer and subplate zone.
  • To infer the functional roles of microglia in these transient developmental structures.
  • To contextualize microglial behavior within human morphogenetic and neurogenetic events.

Main Methods:

  • Characterization of microglial morphology in specific human telencephalic transient structures.
  • Coupling morphological phenotypes with functional characterizations.
  • Interpretation within the context of human neurodevelopmental events.

Main Results:

  • Detailed description of diverse microglial morphologies in the subpial granular layer and subplate zone.
  • Inferred tentative roles for microglia based on their observed phenotypes and the developmental context.
  • Findings linked to ongoing morphogenetic and neurogenetic processes in the human brain.

Conclusions:

  • Microglia exhibit diverse morphologies and likely play varied roles in transient human neurodevelopmental structures.
  • Understanding these roles is critical given the origins of neurological and psychiatric diseases during development.
  • Transient structures and their associated microglia warrant further investigation due to unique human brain features.