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Microglia as integrators of brain-associated molecular patterns

Caroline C Escoubas1, Anna V Molofsky2

  • 1Departments of Psychiatry and Behavioral Sciences/Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA 94158, USA.

Trends in Immunology
|April 24, 2024
PubMed

Insights

Microglia, the brain's immune cells, sense the homeostatic brain via molecular patterns (BAMPs) and cytokine signals. This interaction regulates their function in neural plasticity and development.

Area of Science:

  • Neuroscience
  • Immunology
  • Cell Biology

Background:

  • Microglia are crucial for brain development and plasticity.
  • Understanding how microglia interact with the brain is essential.

Purpose of the Study:

  • To review recent findings on molecular mechanisms of microglial sensing of the homeostatic brain.
  • To propose a framework for microglial regulation by brain-associated molecular patterns (BAMPs) and cytokine cues.

Main Methods:

  • Literature review of recent findings on microglial sensing mechanisms.
  • Analysis of molecular patterns and cytokine signaling in microglia-neuron interactions.

Main Results:

  • Microglia sense the brain through 'brain-associated molecular patterns' (BAMPs) indicating neuronal activity and remodeling.
  • Cytokine signals further define distinct microglial functional states.

Conclusions:

  • Microglial function is acutely controlled by BAMPs and instructive cytokine cues.
  • Investigating these regulatory axes can define a functional code for microglia-neuron communication.
Keywords:
braincytokinesmicroglianeuronneuronal activityneurotransmitterspattern recognition receptorspurinergic signaling

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