Publikationsdatum:
2011-02-12
Beschreibung:
The Gram-negative bacterium Neisseria meningitidis asymptomatically colonizes the throat of 10 to 30% of the human population, but throat colonization can also act as the port of entry to the blood (septicemia) and then the brain (meningitis). Colonization is mediated by filamentous organelles referred to as type IV pili, which allow the formation of bacterial aggregates associated with host cells. We found that proliferation of N. meningitidis in contact with host cells increased the transcription of a bacterial gene encoding a transferase that adds phosphoglycerol onto type IV pili. This unusual posttranslational modification specifically released type IV pili-dependent contacts between bacteria. In turn, this regulated detachment process allowed propagation of the bacterium to new colonization sites and also migration across the epithelium, a prerequisite for dissemination and invasive disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chamot-Rooke, Julia -- Mikaty, Guillain -- Malosse, Christian -- Soyer, Magali -- Dumont, Audrey -- Gault, Joseph -- Imhaus, Anne-Flore -- Martin, Patricia -- Trellet, Mikael -- Clary, Guilhem -- Chafey, Philippe -- Camoin, Luc -- Nilges, Michael -- Nassif, Xavier -- Dumenil, Guillaume -- New York, N.Y. -- Science. 2011 Feb 11;331(6018):778-82. doi: 10.1126/science.1200729.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ecole Polytechnique, Laboratoire des Mecanismes Reactionnels, Palaiseau F-91128, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21311024" target="_blank"〉PubMed〈/a〉
Schlagwort(e):
Bacterial Adhesion
;
Cell Line, Tumor
;
Epithelial Cells/microbiology
;
Fimbriae Proteins/chemistry/*metabolism
;
Fimbriae, Bacterial/chemistry/*metabolism
;
Gene Expression Regulation, Bacterial
;
Glycerol/metabolism
;
Humans
;
Models, Molecular
;
Neisseria meningitidis/genetics/growth & development/*pathogenicity
;
Phosphorylation
;
Phosphotransferases/*genetics/*metabolism
;
*Protein Processing, Post-Translational
;
Transcription, Genetic
Print ISSN:
0036-8075
Digitale ISSN:
1095-9203
Thema:
Biologie
,
Chemie und Pharmazie
,
Informatik
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
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