ArticleMethods in molecular biology (Clifton, N.J.)2023
Quantifying Phagocytosis by Immunofluorescence and Microscopy.
Article in Methods in molecular biology (Clifton, N.J.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Phagocytosis is carried out by cells such as macrophages of the immune system, whereby particulates like bacteria and apoptotic bodies are engulfed and sequestered within phagosomes for subsequent degradation. Hence, phagocytosis is important for infection resolution and tissue homeostasis. Aided by the innate and adaptive immune system, the activation of various phagocytic receptors triggers a cascade of downstream signaling mediators that drive actin and plasma membrane remodeling to entrap the bound particulate within the phagosome. Modulation of these molecular players can lead to distinct changes in the capacity and rates of phagocytosis. Here, we present a fluorescence microscopy-based technique to quantify phagocytosis using a macrophage-like cell line. We exemplify the technique through the phagocytosis of antibody-opsonized polystyrene beads and Escherichia coli. This method can be extended to other phagocytes and phagocytic particles.
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