Abstract
The formation and maturation of phagosomes are accompanied by acute changes in lipid metabolism. Phosphoinositides, in particular, undergo extensive modification as part of the signaling sequence that drives cytoskeletal and membrane remodeling. Because the phosphoinositides provide much of the anionic charge of the cytosolic leaflet of the plasmalemma and phagosomal membrane, the metabolic changes associated with signaling result in marked changes of the surface charge. Here we summarize the pathways involved in lipid remodeling during phagocytosis, the resultant alterations in the surface charge of the nascent and maturing phagosomes, and the consequent effects on the association of proteins attached to the membrane by electrostatic means.
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