REVERSIBLEINFECTION

Pathogen and commensal immunity compared in a reversible infection model that uncouples immunity from pathogen immune evasion

 Coordinatore UNIVERSITAET BERN 

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 Nazionalità Coordinatore Switzerland [CH]
 Totale costo 1˙499˙992 €
 EC contributo 1˙499˙992 €
 Programma FP7-IDEAS-ERC
Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call ERC-2011-StG_20101109
 Funding Scheme ERC-SG
 Anno di inizio 2011
 Periodo (anno-mese-giorno) 2011-11-01   -   2016-10-31

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    UNIVERSITAET BERN

 Organization address address: Hochschulstrasse 4
city: BERN
postcode: 3012

contact info
Titolo: Dr.
Nome: Siegfried
Cognome: Hapfelmeier
Email: send email
Telefono: +41 31 632 8649
Fax: +41 31 6324966

CH (BERN) hostInstitution 1˙499˙992.00
2    UNIVERSITAET BERN

 Organization address address: Hochschulstrasse 4
city: BERN
postcode: 3012

contact info
Titolo: Ms.
Nome: Maddalena
Cognome: Tognola
Email: send email
Telefono: +41 31 6314809
Fax: +41 31 631 5106

CH (BERN) hostInstitution 1˙499˙992.00

Mappa


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

pathogen    encounter    infection    reversible    bacteria    anti    colonization    model    inflammatory    commensal    responses    host    mutualism    evasion    bacterial    immunity    immune    microbes    live    intestinal    pathogenic    induced    uncouple   

 Obiettivo del progetto (Objective)

'The research described in this proposal will use a novel reversible intestinal infection model developed in my laboratory (Hapfelmeier et al., 2010. Science 328:1705-1709) for the detailed study of the differences between intestinal commensal and pathogen induced immunity. In my earlier work this system allowed fully reversible intestinal exposure of germ-free animals with live bacteria so that the commensal-induced immunity could be uncoupled from persistent bacterial colonization. This permitted detailed quantitative and temporal analysis of host responses to encounter of live commensal bacteria. In the presented research project the reversible bacterial colonization model will be extended to produce a model of reversible intestinal infection with intestinal pathogenic bacteria to uncouple pathogen immunity from pathogen immune evasion. Most microbes we encounter are commensal bacteria that benignly colonize the intestinal lumen. The immune system is well adapted for commensal mutualism, and mutualism breakdown, as in inflammatory bowel disease, is relatively rare. In contrast, pathogenic bacterial encounters less frequent and countered with anti-pathogen immune defense and inflammation. During infection, the host-pathogen relationship is a competition between anti-bacterial immunity and pathogen immune evasion – the latter is well-studied, the former largely in systems where the pathogen proliferates and immune evasion overlays immunity. There is the need to experimentally uncouple pathogen immunity and pathogen immune evasion. Our novel approach permits a detailed comparative analysis of pathogen and commensal immune induction and will shed new light on the mechanisms of pathogen versus commensal immune recognition. This knowledge is critical for the design of efficient bacterial vaccines and the understanding of the abnormal immune responses directed against commensal microbes in chronic inflammatory diseases.'

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