Quantification of Microglial Engulfment of Synaptic Material Using Flow Cytometry
Journal of visualized experiments(2024)
摘要
Microglia play a pivotal role in synaptic refinement in the brain. Analysis of microglial engulfment of synapses is essential for comprehending this process; however, currently available methods for identifying microglial engulfment of synapses, such as immunohistochemistry (IHC) and imaging, are laborious and time -intensive. To address this challenge, herein we present in vitro and in vivo* assays that allow fast and high -throughput quantification of microglial engulfment of synapses using flow cytometry. In the in vivo* approach, we performed intracellular vGLUT1 staining following fresh cell isolation from adult mouse brains to quantify engulfment of vGLUT1 + synapses by microglia. In the in vitro synaptosome engulfment assay, we used freshly isolated cells from the adult mouse brain to quantify the engulfment of pHrodo Redlabeled synaptosomes by microglia. These protocols together provide a time -efficient approach to quantifying microglial engulfment of synapses and represent promising alternatives to labor-intensive image analysis -based methods. By streamlining the analysis, these assays can contribute to a better understanding of the role of microglia in synaptic refinement in different disease models.
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