Journal
BIOLOGY OF THE CELL
Volume 98, Issue 3, Pages 195-201Publisher
WILEY
DOI: 10.1042/BC20050021
Keywords
endosome; exocytosis; lysosome; phagocytosis; Rab; vesicle-associated membrane protein (VAMP)
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Phagocytosis is used by macrophages, dendritic cells and neutrophils to capture and destroy pathogens and particulate antigens. Although localized assembly of actin filaments is the driving force for particle internalization, exocytosis of intracellular compartments, and in particular endocytic compartments, has been shown recently to be required for the early steps of phagosome formation. Here we report on the different compartments undergoing exocytosis during phagocytosis, with a special focus on late endosomes. We then compare this process with secretion from lysosomes or lysosome-related organelles in specialized cells. Finally, we discuss how some of the molecular mechanisms responsible for lysosome-related organelle secretion could also be implicated in phagosome formation.
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