PI5P Triggers ICAM-1 Degradation in Shigella Infected Cells, Thus Dampening Immune Cell RecruitmentVisa övriga samt affilieringar
2016 (Engelska)Ingår i: Cell Reports, ISSN 2639-1856, E-ISSN 2211-1247, Vol. 14, nr 4, s. 750-759
Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
Shigella flexneri, the pathogen responsible for bacillary dysentery, has evolved multiple strategies to control the inflammatory response. Here, we show that Shigella subverts the subcellular trafficking of the intercellular adhesion molecule-1 (ICAM-1), a key molecule in immune cell recruitment, in a mechanism dependent on the injected bacterial enzyme IpgD and its product, the lipid mediator PI5P. Overexpression of IpgD, but not a phosphatase dead mutant, induced the internalization and the degradation of ICAM-1 in intestinal epithelial cells. Remarkably, addition of permeant PI5P reproduced IpgD effects and led to the inhibition of neutrophil recruitment. Finally, these results were confirmed in an in vivo model of Shigella infection where IpgD-dependent ICAM-1 internalization reduced neutrophil adhesion. In conclusion, we describe here an immune evasion mechanism used by the pathogen Shigella to divert the host cell trafficking machinery in order to reduce immune cell recruitment.
Ort, förlag, år, upplaga, sidor
Cell Press , 2016. Vol. 14, nr 4, s. 750-759
Nationell ämneskategori
Naturvetenskap Biologiska vetenskaper Immunologi Mikrobiologi
Forskningsämne
infektionssjukdomar
Identifikatorer
URN: urn:nbn:se:umu:diva-115891DOI: 10.1016/j.celrep.2015.12.079ISI: 000369104500007PubMedID: 26776508Scopus ID: 2-s2.0-84958125208OAI: oai:DiVA.org:umu-115891DiVA, id: diva2:900958
2016-02-052016-02-052025-08-28Bibliografiskt granskad