Publikationsdatum:
2010-09-25
Beschreibung:
Salmonella enterica serotype Typhimurium (S. Typhimurium) causes acute gut inflammation by using its virulence factors to invade the intestinal epithelium and survive in mucosal macrophages. The inflammatory response enhances the transmission success of S. Typhimurium by promoting its outgrowth in the gut lumen through unknown mechanisms. Here we show that reactive oxygen species generated during inflammation react with endogenous, luminal sulphur compounds (thiosulphate) to form a new respiratory electron acceptor, tetrathionate. The genes conferring the ability to use tetrathionate as an electron acceptor produce a growth advantage for S. Typhimurium over the competing microbiota in the lumen of the inflamed gut. We conclude that S. Typhimurium virulence factors induce host-driven production of a new electron acceptor that allows the pathogen to use respiration to compete with fermenting gut microbes. Thus the ability to trigger intestinal inflammation is crucial for the biology of this diarrhoeal pathogen.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2946174/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2946174/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winter, Sebastian E -- Thiennimitr, Parameth -- Winter, Maria G -- Butler, Brian P -- Huseby, Douglas L -- Crawford, Robert W -- Russell, Joseph M -- Bevins, Charles L -- Adams, L Garry -- Tsolis, Renee M -- Roth, John R -- Baumler, Andreas J -- AI040124/AI/NIAID NIH HHS/ -- AI044170/AI/NIAID NIH HHS/ -- AI073120/AI/NIAID NIH HHS/ -- AI076246/AI/NIAID NIH HHS/ -- AI088122/AI/NIAID NIH HHS/ -- R21 AI088122/AI/NIAID NIH HHS/ -- R21 AI088122-01/AI/NIAID NIH HHS/ -- R21 AI088122-02/AI/NIAID NIH HHS/ -- England -- Nature. 2010 Sep 23;467(7314):426-9. doi: 10.1038/nature09415.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, One Shields Avenue, Davis, California 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20864996" target="_blank"〉PubMed〈/a〉
Schlagwort(e):
Animals
;
*Cell Respiration
;
Colitis/metabolism/microbiology
;
Electron Transport
;
*Electrons
;
Female
;
Gastrointestinal Tract/metabolism/*microbiology/*pathology
;
Inflammation/metabolism/microbiology/pathology
;
Intestinal Mucosa/metabolism/microbiology/pathology
;
Mice
;
Mice, Inbred C57BL
;
Reactive Oxygen Species/metabolism
;
Salmonella typhimurium/growth & development/*metabolism
;
Tetrathionic Acid/metabolism
;
Thiosulfates/metabolism
Print ISSN:
0028-0836
Digitale ISSN:
1476-4687
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Permalink
