Plasma membrane profiling during enterohemorrhagic E. coli infection reveals that the metalloprotease StcE cleaves CD55 from host epithelial surfaces
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Published version
Author(s)
Type
Journal Article
Abstract
Enterohemorrhagic Escherichia coli (EHEC) is one of several E. coli pathotypes that infect the intestinal tract and cause disease. Formation of the characteristic attaching and effacing (A/E) lesion on the surface of infected cells causes significant remodelling of the host cell surface, however limited information is available about changes at the protein level. Here we employed "plasma membrane profiling", a quantitative cell-surface proteomics technique, to identify host proteins whose cell-surface levels are altered during infection. Using this method, we quantified more than 1100 proteins, 280 of which showed altered cell-surface levels after exposure to EHEC. 22 host proteins were significantly reduced on the surface of infected epithelial cells. These included both known and unknown targets of EHEC infection. The complement decay-accelerating factor CD55 exhibited the greatest reduction in cell surface levels during infection. We showed by flow cytometry and Western blot analysis that CD55 is cleaved from the cell surface by the EHEC-specific protease StcE, and found that StcE-mediated CD55 cleavage results in increased neutrophil adhesion to the apical surface of intestinal epithelial cells. This suggests that StcE alters host epithelial surfaces to depress neutrophil transepithelial migration during infection. This work is the first report of the global manipulation of the epithelial cell surface by a bacterial pathogen and illustrates the power of quantitative cell-surface proteomics in uncovering critical aspects of bacterial infection biology.
Date Issued
2018-11-02
Date Acceptance
2018-09-06
Citation
Journal of Biological Chemistry, 2018, 293, pp.17188-17199
ISSN
0021-9258
Publisher
American Society for Biochemistry and Molecular Biology
Start Page
17188
End Page
17199
Journal / Book Title
Journal of Biological Chemistry
Volume
293
Copyright Statement
© 2018 Furniss et al. Published by The American Society for Biochemistry and Molecular Biology, Inc. Final version open access under the terms of the Creative
Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/)
Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/)
Sponsor
Medical Research Council
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/30190327
PII: RA118.005114
Grant Number
MR/M009505/1
Subjects
CD55
EHEC
EPHA2
StcE
cell surface
host-pathogen interaction
infection
metalloprotease
neutrophil
proteomics
Publication Status
Published
Coverage Spatial
United States
Date Publish Online
2018-09-06