Related Experiment Video

Updated: Jan 22, 2026

A Versatile Murine Model of Subcortical White Matter Stroke for the Study of Axonal Degeneration and White Matter Neurobiology
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A Versatile Murine Model of Subcortical White Matter Stroke for the Study of Axonal Degeneration and White Matter Neurobiology

Published on: March 17, 2016

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Unique microglia expression profile in developing white matter

Ori Staszewski1, Nora Hagemeyer2

  • 1Institute of Neuropathology, Medical Faculty, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany.

BMC Research Notes
|July 3, 2019
PubMed
Abstract

Insights

Amoeboid microglia in developing white matter exhibit distinct gene expression for phagocytosis and migration, crucial for oligodendrocyte health. These unique profiles are transient, diminishing by postnatal day 10.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Immunology

Background:

  • Amoeboid microglia are vital for oligodendrocyte homeostasis and myelinogenesis in early postnatal development.
  • Distinct microglial activation profiles exist in white matter compared to grey matter during development.

Purpose of the Study:

  • To identify specific gene profiles of white matter and grey matter microglia during development.
  • To analyze transcriptional changes in microglia from the corpus callosum, cortex, and cerebellum at postnatal days 7, 10, and 42.

Main Methods:

  • Bulk RNA sequencing of microglia isolated from mouse corpus callosum, cortex, and cerebellum.
  • Comparative transcriptional analysis at different developmental time points (P7, P10, P42).

Main Results:

  • Microglia in white matter (corpus callosum, cerebellum) display amoeboid morphology and a shared transcription profile at P7.
  • This profile includes high expression of genes related to microglial priming, phagocytosis, and migration.
  • These distinct white matter microglial characteristics are transient and lost by P10.

Conclusions:

  • Microglia in white matter exhibit unique, transient developmental gene expression patterns essential for early myelinogenesis.
  • These findings provide a detailed view of white matter versus grey matter microglia during development.
  • The study validates and expands upon previous microarray analyses of microglial transcriptomes.
Keywords:
Amoeboid microgliaGrey matterRNA sequencingWhite matter

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