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Updated: Aug 15, 2025
Author Spotlight: Enhancements in Gene Expression Regulation Research
Published on: September 15, 2023
[Epigenetic regulation of microglia-mediated innate immune memory and neurological diseases]
Jin-Tao Zhou1, Zhong-Wang Yu2, Li Cao3
1Department of Neurobiology, College of Basic Medical Sciences, Naval Medical University, Shanghai 200433, China.
Abstract:
Microglia have the ability to mediate innate immune memory and can be reprogrammed by primary stimuli to enhance or inhibit the immune response of microglia to secondary stimuli. Inflammatory stimulation is an important factor for microglia to mediate innate immune memory. Single or repeated stimulation can induce microglia to form different phenotypes. Microglia-mediated innate immune response is involved in the regulation of immune memory. Enhancer modification is a key pathway of microglia epigenetic regulation, and the H3K27ac enhancer marker is closely related to immune training. TGF-β1 mediates the interaction between IL-10 and IL-1β, thereby influencing the microglial phenotype. Microglia glycolysis activity is increased after immune training, and oxidative phosphorylation is associated with immune tolerance. Innate immune memory is closely associated with neurodegenerative diseases, brain tumors, brain damage and psychosis. Further study on the mechanism of microglia-mediated innate immune memory is helpful to understand the occurrence and development of central nervous system diseases and provide new options for the treatment of central nervous system diseases.
Insights
Microglia exhibit innate immune memory, changing their response to stimuli. This immune training involves epigenetic changes and metabolic shifts, impacting neurodegenerative diseases.
Area of Science:
- Neuroimmunology
- Epigenetics
- Cellular Metabolism
Context:
- Microglia, the brain's resident immune cells, possess innate immune memory.
- Primary stimuli can reprogram microglia, altering their response to subsequent challenges.
- Inflammatory stimulation is a key driver of microglial immune memory.
Purpose:
- To explore the mechanisms underlying microglia-mediated innate immune memory.
- To investigate the role of epigenetic modifications, specifically H3K27ac, in immune training.
- To understand the metabolic changes, including glycolysis and oxidative phosphorylation, associated with microglial immune memory and tolerance.
Summary:
- Microglia mediate innate immune memory through reprogramming by stimuli, influenced by inflammation.
- Epigenetic regulation via enhancer modification (H3K27ac) and signaling pathways (TGF-β1) shapes microglial phenotypes.
- Immune training increases microglial glycolysis, while oxidative phosphorylation relates to immune tolerance.
Impact:
- Understanding microglial innate immune memory is crucial for neurodegenerative diseases, brain tumors, and psychosis.
- Elucidating these mechanisms offers potential therapeutic targets for central nervous system disorders.
