Microglia Purity
Microglia Purity - Related Videos
07:54
Rapid and Refined CD11b Magnetic Isolation of Primary Microglia with Enhanced Purity and Versatility
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Cited by 22 •
2017
Here, we present a protocol to isolate microglia from postnatal mouse pups (day 1) for in vitro experimentation. This improvised method of isolation generates both high yield and purity, a significant advantage over alternate methods that allows broad range experimentation for the purposes of elucidating microglial biology.
13:36
Detection of MicroRNAs in Microglia by Real-time PCR in Normal CNS and During Neuroinflammation
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Cited by 37 •
2012
Microglia are resident macrophages that provide the first line of defense and immune surveillance of the central nervous system. MicroRNAs are regulatory molecules that play an important role in many physiological processes including activation and differentiation of macrophages. In this article, we describe the method for measurement of microRNAs in microglia.
12:17
Detection and Isolation of Apoptotic Bodies to High Purity
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Cited by 29 •
2018
A workflow using flow cytometry or differential centrifugation is developed to detect, quantify and isolate apoptotic bodies from an apoptotic sample to high purity.
11:28
Culturing Microglia from the Neonatal and Adult Central Nervous System
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Cited by 35 •
2013
We outline methods for the efficient and quick isolation/culture of viable microglia from the neonatal cerebral cortex and adult spinal cord. The dissection and plating of cortical microglia can be accomplished within 90 minutes, with the subsequent microglial harvest taking place ~ 10 days following the initial dissection.
09:12
Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
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Cited by 17 •
2014
One key to successful investigation of microglial biology is the preservation of microglial immunofunction ex vivo during isolation from CNS tissue. Isolating microglia via rotary shaking results in highly pure and immunofunctional cell cultures as assessed by fluorescent imaging, immunocytochemistry, and ELISA following microglia activation with the proinflammatory stimuli lipopolysaccharide (LPS) and Pam3CSK4 (Pam).
FAQs
Marker selection determines whether an assay distinguishes microglia from other cells in the preparation. Microglia-associated markers identify the intended population, while complementary markers reveal unwanted neural or non-neural populations. Using both perspectives makes the purity estimate more informative than measuring microglia-associated signal alone, because it tests the preparation for cellular heterogeneity that could affect interpretation.
Complementary markers provide evidence about which cells are present in addition to the microglia-associated population. This helps identify contamination by neural or non-neural cell types that might otherwise remain hidden. The combined assessment supports a more complete quality evaluation and helps researchers judge whether observed cellular responses arise primarily from microglia rather than from mixed populations.
Contaminating cells can contribute their own morphology, signaling activity, or inflammatory responses, making it difficult to assign measurements specifically to microglia. This cellular heterogeneity can weaken reproducibility and obscure treatment effects. Evaluating Microglia Purity therefore helps researchers determine whether experimental findings reflect microglial biology or signals introduced by other cells in the preparation.
Immunostaining evaluates marker expression in cells that can be examined through labeling, whereas flow cytometry quantifies marker-defined populations across the preparation. Both approaches can assess microglia-associated markers, and complementary markers can be incorporated to evaluate unwanted populations. The choice depends on how researchers need to quantify the preparation and characterize its cellular composition.
Researchers first isolate the microglial preparation, then label or detect microglia-associated markers using immunostaining or flow cytometry. They also evaluate unwanted neural or non-neural populations with complementary markers. The resulting measurements provide a basis for judging cellular composition before interpreting microglial morphology, signaling, inflammatory responses, or treatment effects.
High-purity preparations are particularly valuable when experiments measure microglial morphology, signaling, or inflammatory responses and require those outcomes to be attributed specifically to microglia. They also support studies of neuroinflammation, neurodegenerative disease, brain injury, and therapeutic compounds. In these settings, reducing cellular heterogeneity improves the interpretability and reproducibility of results.
Purity measurements indicate whether the cellular preparation is sufficiently consistent for comparisons among experiments or treatments. A preparation with fewer unwanted populations provides a stronger basis for interpreting microglial behavior and responses. This quality information helps researchers identify cellular heterogeneity as a possible source of variation when analyzing neuroscience experiments.