Microglia go beyond surveillance to fuel neuronal protein synthesis on demand

Stefano Pluchino1, Evridiki Asimakidou1

  • 1Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.

Cell Metabolism
|August 4, 2026
PubMed

Insights

Microglia coordinate brain metabolism by releasing CYR61, a protein that enhances glucose uptake and neuronal protein synthesis. This finding reveals how microglia support neuronal adaptation in the brain.

Area of Science:

  • Neuroscience
  • Metabolism
  • Cell Biology

Background:

  • Microglia are key immune cells in the central nervous system.
  • The neurovascular niche involves complex interactions between neurons, glia, and blood vessels.
  • Metabolic regulation is crucial for neuronal function and adaptation.

Purpose of the Study:

  • To investigate the role of microglia in coordinating metabolic interactions within the neurovascular niche.
  • To identify specific mediators released by microglia that influence neuronal metabolism.

Main Methods:

  • The study utilized advanced techniques to analyze cellular interactions and molecular signaling within the neurovascular niche.
  • Specific focus on identifying secreted factors from microglia.

Main Results:

  • Microglia were shown to coordinate multicellular metabolic interactions.
  • Microglia-derived cysteine-rich angiogenic inducer 61 (CYR61) was identified as a key mediator.
  • CYR61 was found to promote cerebral glucose uptake and neuronal protein synthesis.

Conclusions:

  • Microglia play a critical role in regulating brain metabolism.
  • Microglia-derived CYR61 supports neuronal adaptation by enhancing glucose utilization and protein synthesis.
  • This highlights a novel mechanism for microglia-neuron communication in metabolic regulation.