Journal
INTERNATIONAL JOURNAL OF MEDICAL MICROBIOLOGY
Volume 308, Issue 1, Pages 58-67Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ijmm.2017.08.007
Keywords
Intracellular pathogen; pH quantification; Autophagy; Membrane fusion; Mycobacterium; Salmonella
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [SPP1580]
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Many eukaryotic cells ingest extracellular particles in a process termed phagocytosis which entails the generation of a new intracellular compartment, the phagosome. Phagosomes change their composition over time and this maturation process culminates in their fusion with acidic, hydrolase-rich lysosomes. During the maturation process, degradation and, when applicable, killing of the cargo may ensue. Many of the events that are pathologically relevant depend on strong acidification of phagosomes by the 'vacuolar' ATPase (V-ATPase). This protein complex acidifies the lumen of some intracellular compartments at the expense of ATP hydrolysis. We discuss here the roles and importance of V-ATPase in intracellular trafficking, its distribution, inhibition and activities, its role in the defense against microorganisms and the counteractivities of pathogens.
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