Differential regulation by leukotrienes and calcium of Fc gamma receptor-induced phagocytosis and Syk activation in dendritic cells versus macrophages.


Macrophage (MØ) phagocytosis via the Fc receptor for immunoglobulin G (Fc gammaR) requires the spleen tyrosine kinase (Syk) and serves an important antimicrobial function. We have reported previously that Fc gammaR-mediated ingestion and Syk activation in MØ are amplified by and depend on the proinflammatory lipid mediator leukotriene B4 (LTB4). Although Fc… (More)


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