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Updated: Apr 29, 2026
Primary Microglia Isolation from Mixed Glial Cell Cultures of Neonatal Rat Brain Tissue
Published on: August 15, 2012
Investigating Glycolysis in Primary Microglia Using Extracellular Flux Assay
Aysika Das1, Deepak K Kaushik2
1Division of Biomedical Sciences, Faculty of Medicine, Memorial University of Newfoundland.
Abstract:
Microglia, the resident macrophage cells of the central nervous system, dynamically alter their metabolic programs in response to physiological and pathological cues. Understanding these metabolic shifts is crucial for elucidating their roles in inflammation. Here, we present a detailed protocol for assessing the glycolytic profile of primary microglia isolated from neonatal mouse brain cortices using a glycolysis stress test on an extracellular flux analyzer. This assay enables real-time measurement of ECAR, an indicator of glycolytic activity associated with low pH, such as lactate. Our approach involves treating cultured microglia under different conditions to examine how metabolic pathways are altered in response to various stimuli, including pro-inflammatory stimuli. Uniquely, our lab prepares fresh stock solutions of different reagents, including glucose, oligomycin, and 2-deoxyglucose (2DG), to target the different aspects of the pathway, with careful adjustment of pH for each reagent to ensure experimental accuracy and reproducibility. This method provides a robust platform for investigating glycolysis in primary microglia and offers insight into their functional states under inflammatory or disease-relevant conditions.
Insights
This study details a method to measure microglial glycolysis, crucial for understanding brain inflammation. The protocol uses a glycolysis stress test to analyze metabolic changes in microglia under various conditions.
Area of Science:
- Neuroscience
- Immunology
- Cellular Metabolism
Background:
- Microglia are key immune cells in the central nervous system.
- Their metabolic reprogramming influences inflammatory responses.
- Understanding microglial metabolism is vital for neuroinflammation research.
Purpose of the Study:
- To establish a protocol for assessing microglial glycolysis.
- To investigate metabolic alterations in microglia in response to stimuli.
- To provide insights into microglial function during inflammation.
Main Methods:
- Isolation of primary microglia from neonatal mouse brain cortices.
- Utilizing a glycolysis stress test on an extracellular flux analyzer.
- Real-time measurement of extracellular acidification rate (ECAR) to assess glycolytic activity.
- Treatment of microglia with various stimuli, including pro-inflammatory agents.
- Preparation of fresh reagent stock solutions with precise pH adjustment.
Main Results:
- The protocol enables real-time measurement of microglial glycolytic profiles.
- Metabolic pathway alterations can be observed in response to different stimuli.
- The method allows for detailed analysis of glycolysis in primary microglia.
Conclusions:
- This robust protocol facilitates the study of glycolysis in primary microglia.
- It offers valuable insights into microglial functional states under inflammatory conditions.
- The method aids in understanding the role of microglial metabolism in neuroinflammation.
