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Updated: Oct 4, 2025

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Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
Published on: January 30, 2014
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[Microglial Response to Brain Temperature and Neuronal Circuit Reorganization]
Junya Onodera1, Yuji Ikegaya, Ryuta Koyama
1Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, The University of Tokyo.
Brain and Nerve = Shinkei Kenkyu No Shinpo
|February 2, 2022
Summary
Microglia, the brain's immune cells, may act as temperature sensors. They use thermosensitive channels to detect temperature changes, influencing neural circuit reorganization.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Brain tissue is sensitive to temperature fluctuations, impacting neural circuit structure and function.
- Microglia, the resident immune cells of the brain, play roles in environmental surveillance and synaptic pruning.
- Neural circuits undergo reorganization, a process influenced by various cellular and environmental factors.
Purpose of the Study:
- To explore the potential role of microglia as temperature sensors within the brain.
- To investigate the involvement of thermosensitive transient receptor potential (TRP) channels in microglial temperature sensing.
- To understand how microglial temperature sensing contributes to the reorganization of neural circuits.
Main Methods:
- Literature review and theoretical discussion on microglial function.
- Analysis of existing research on thermosensitive TRP channels in neural tissues.
- Synthesis of data linking microglial activity, temperature sensitivity, and synaptic plasticity.
Main Results:
- Microglia possess dynamic structures enabling environmental monitoring.
- Thermosensitive TRP channels are present in the brain and can mediate cellular responses to temperature.
- A plausible mechanism exists for microglia detecting temperature changes via TRP channels.
Conclusions:
- Microglia are proposed to function as key temperature sensors in the brain.
- Thermosensitive TRP channels are likely mediators of this temperature-sensing role.
- Microglial temperature sensing may significantly influence neural circuit reorganization and brain homeostasis.

