Posttranslational modification of pili upon cell contact triggers N. meningitidis dissemination.

J. Chamot-Rooke; G. Mikaty; C. Malosse; M. Soyer; A. Dumont; J. Gault; A.-F. Imhaus; P. Martin; M. Trellet; G. Clary; P. Chafey; L. Camoin; M. Nilges; X. Nassif; G. Duménil

Posttranslational modification of pili upon cell contact triggers N. meningitidis dissemination.

J. Chamot-Rooke ¹ G. Mikaty ² C. Malosse ¹ M. Soyer ^{3, 4} A. Dumont ^{3, 4} J. Gault ¹ A.-F. Imhaus ^{3, 4} P. Martin ² M. Trellet ⁵ G. Clary ^{3, 6} P. Chafey ^{3, 6} L. Camoin ^{3, 6} M. Nilges ⁵ X. Nassif ^{7, 2} G. Duménil ^{3, 4}

1 DCMR - Laboratoire des mécanismes réactionnels

2 Inserm U1002 - Pathogénie des infections systémiques

3 UPD5 Médecine - Université Paris Descartes - Faculté de Médecine

4 PARCC - UMR-S U970 - Paris-Centre de Recherche Cardiovasculaire

5 Bioinformatique Structurale

6 IC UM3 (UMR 8104 / U1016) - Institut Cochin

7 CHU Necker - Enfants Malades [AP-HP]

Abstract : 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.

Document type :

Journal articles

Domain :

Chemical Sciences / Theoretical and/or physical chemistry

Complete list of metadatas

https://hal-polytechnique.archives-ouvertes.fr/hal-00904588
Contributor : Denis Roura <>
Submitted on : Monday, December 2, 2013 - 9:15:17 PM
Last modification on : Friday, May 10, 2019 - 9:52:39 AM

Posttranslational modification of pili upon cell contact triggers N. meningitidis dissemination.

Identifiers

Collections

Citation

Export

Metrics

4532

Contact

Posttranslational modification of pili upon cell contact triggers N. meningitidis dissemination.

Identifiers

Collections

Citation

Export

Share

Metrics

4532

Contact