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Rapid and Refined CD11b Magnetic Isolation of Primary Microglia with Enhanced Purity and Versatility

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Microglia-Specific K_2P Channel THIK-1: Structure, Function, and Therapeutic Potential.

Yoonsub Kim¹, Bo Hyun Lee^1,2,3, Byeonggyu Ahn^1,2

¹Department of Physiology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea.

Acta Physiologica (Oxford, England)

|April 12, 2026

Summary

This summary is machine-generated.

The tandem pore domain halothane-inhibited potassium (THIK-1) channel is crucial for microglial function and neuroimmune signaling. Understanding THIK-1’s structure and regulation offers potential therapeutic targets for CNS disorders.

Keywords:

THIK‐1 channel microglia neurodegenerative diseases neuroinflammation potassium channel

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Area of Science:

Neuroscience and Molecular Biology
Ion Channel Physiology
Neuroimmunology

Background:

The tandem pore domain halothane-inhibited potassium (THIK-1) channel, a member of the K2P family, is vital for maintaining resting membrane potential.
THIK-1 is increasingly recognized as a key regulator of microglial function and neuroimmune signaling pathways.
Growing structural and functional data necessitates an integrated view of THIK-1 in microglial biology and central nervous system (CNS) diseases.

Purpose of the Study:

To synthesize current knowledge on the structural, regulatory, and functional aspects of THIK-1.
To highlight THIK-1's specific roles in microglial physiology and neuroimmune signaling.
To review THIK-1's involvement in various central nervous system (CNS) pathologies.

Main Methods:

Comprehensive literature review focusing on electrophysiological, molecular, and structural studies.
Emphasis on cryo-electron microscopy findings for structural insights.
Analysis of pharmacological modulation and disease-associated functional data.

Main Results:

THIK-1 is enriched in microglia, influencing surveillance motility, synaptic pruning, and inflammasome activation.
Its high constitutive activity significantly determines microglial membrane potential; structural features enable lipid and anesthetic regulation.
THIK-1 K⁺ efflux is essential for NLRP3 inflammasome activation and pyroptosis, linking it to neuroinflammation, neurodegeneration, and psychiatric disorders.

Conclusions:

THIK-1 acts as a central regulator of neuroimmune signaling, integrating structural, electrophysiological, and immunological data.
Ion channel activity critically shapes microglial function and disease pathogenesis.
THIK-1 is a potential microglia-specific therapeutic target for neuroinflammatory and neurodegenerative diseases.