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Outer membrane vesicles are vehicles for the delivery of Vibrio tasmaniensis virulence factors to oyster immune cells.
Environ Microbiol
April 2015
Ecology of Coastal Marine Systems, CNRS UMR 5119, Montpellier, F-34095, France; Ecology of Coastal Marine Systems, Ifremer, Montpellier, F-34095, France; Ecology of Coastal Marine Systems, University of Montpellier 1, Montpellier, F-34095, France; Ecology of Coastal Marine Systems, University of Montpellier 2 and IRD, Montpellier, F-34095, France.
Vibrio tasmaniensis LGP32, a facultative intracellular pathogen of oyster haemocytes, was shown here to release outer membrane vesicles (OMVs) both in the extracellular milieu and inside haemocytes. Intracellular release of OMVs occurred inside phagosomes of intact haemocytes having phagocytosed few vibrios as well as in damaged haemocytes containing large vacuoles heavily loaded with LGP32. The OMV proteome of LGP32 was shown to be rich in hydrolases (25%) including potential virulence factors such as proteases, lipases, phospholipases, haemolysins and nucleases.
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