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Related Concept Videos

T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...

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Related Experiment Video

Updated: May 11, 2026

Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
09:12

Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates

Published on: January 30, 2014

Factors regulating microglia activation.

Katrin Kierdorf1, Marco Prinz

  • 1Institute of Neuropathology, University of Freiburg Freiburg, Germany ; Faculty of Biology, University of Freiburg Freiburg, Germany.

Frontiers in Cellular Neuroscience
|May 1, 2013
PubMed
Summary
This summary is machine-generated.

Microglia, the CNS immune cells, maintain brain homeostasis. Their transition from resting to activated states is tightly controlled by intrinsic and extrinsic factors to prevent severe central nervous system pathologies.

Keywords:
activationdevelopmentmicrogliasilencingtranscription factors

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Last Updated: May 11, 2026

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Area of Science:

  • Neuroimmunology
  • Cellular Biology
  • Central Nervous System (CNS) Homeostasis

Background:

  • Microglia are resident macrophages in the CNS, crucial for tissue homeostasis.
  • They share functional similarities with other tissue macrophages.
  • Neuronal cells are highly sensitive to environmental changes, making microglial regulation vital.

Purpose of the Study:

  • To review recent advancements in understanding the mechanisms governing microglia quiescence.
  • To highlight the factors regulating the transition between microglial phenotypes.
  • To emphasize the importance of microglial homeostasis in preventing CNS pathologies.

Main Methods:

  • Literature review of recent research on microglia.
  • Analysis of intrinsic factors (e.g., Runx-1, Irf8, Pu.1) regulating microglial state.
  • Examination of extrinsic factors (e.g., CD200, CX3CR1, TREM2) influencing microglial function.

Main Results:

  • Identified key intrinsic and extrinsic factors that tightly regulate microglial activation.
  • Demonstrated that minor dysregulations in these factors can lead to severe CNS pathologies.
  • Provided new insights into the molecular mechanisms ensuring microglial quiescence.

Conclusions:

  • Maintaining microglial quiescence is essential for CNS health.
  • Dysregulation of microglial homeostasis contributes to neurological diseases.
  • Further research into regulatory mechanisms can inform therapeutic strategies for CNS disorders.