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Updated: Aug 10, 2026
Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
Published on: January 30, 2014
New Microglia on the Block
Eun Sun Jung1, Inhee Mook-Jung1
1Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul 03080, South Korea; Neuroscience Research Institute, Seoul National University, College of Medicine, Seoul 03080, South Korea; SNU Dementia Research Center, Seoul National University, College of Medicine, Seoul 03080, South Korea.
Abstract:
Microglia exhibit differing functions and phenotypes depending on life stage and the context of health or disease. Recently, in Nature Neuroscience, Marschallinger et al. (2020) described a new state of microglia, namely "lipid-droplet-accumulating microglia" (LDAM), that contributes to neuronal inflammation and age-related neurodegeneration.
Insights
Newly identified lipid-droplet-accumulating microglia (LDAM) contribute to brain inflammation and neurodegeneration. This microglial state is linked to aging and disease, offering new therapeutic targets.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Microglia, the brain's resident immune cells, display diverse functions and phenotypes.
- These functions are influenced by factors such as age, health status, and disease context.
- Understanding microglial heterogeneity is crucial for addressing neurological disorders.
Purpose of the Study:
- To describe a newly identified microglial state.
- To investigate the role of this state in neuronal inflammation and age-related neurodegeneration.
- To establish lipid-droplet-accumulating microglia (LDAM) as a significant factor in brain pathology.
Main Methods:
- Phenotypic characterization of microglia.
- Analysis of lipid metabolism in microglia.
- Investigation of microglial contribution to neuronal inflammation in vivo and in vitro.
- Correlation of LDAM state with age-related neurodegenerative conditions.
Main Results:
- Identification and characterization of a distinct microglial subpopulation: lipid-droplet-accumulating microglia (LDAM).
- LDAM are associated with increased lipid accumulation.
- LDAM state correlates with heightened neuronal inflammation.
- The LDAM phenotype is implicated in age-related neurodegeneration.
Conclusions:
- Lipid-droplet-accumulating microglia (LDAM) represent a critical cellular state involved in neuroinflammation.
- LDAM contribute significantly to the pathogenesis of age-related neurodegeneration.
- Targeting LDAM may offer a novel therapeutic strategy for neurodegenerative diseases.
