T6SS-PSEUDO-EFFECTOR

Identification of novel effectors of the Type Six Secretion Systems in Pseudomonas aeruginosa

 Coordinatore  

 Organization address address: SOUTH KENSINGTON CAMPUS EXHIBITION ROAD
city: LONDON
postcode: SW7 2AZ

contact info
Titolo: Ms.
Nome: Brooke
Cognome: Alasya
Email: send email
Telefono: +44 207 594 1181
Fax: +44 207 594 1418

 Nazionalità Coordinatore Non specificata
 Totale costo 221˙606 €
 EC contributo 221˙606 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2012-IIF
 Anno di inizio 2014
 Periodo (anno-mese-giorno) 2014-03-01   -   2016-02-29

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE

 Organization address address: SOUTH KENSINGTON CAMPUS EXHIBITION ROAD
city: LONDON
postcode: SW7 2AZ

contact info
Titolo: Ms.
Nome: Brooke
Cognome: Alasya
Email: send email
Telefono: +44 207 594 1181
Fax: +44 207 594 1418

UK (LONDON) coordinator 221˙606.40

Mappa


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gene    clusters    infections       expression       proteins    identification    secreted    aeruginosa    bacteria    regulated    effectors       ss    virulence    secretion   

 Obiettivo del progetto (Objective)

'Pseudomonas aeruginosa is a human pathogen causing life-threatening nosocomial infections. Its virulence mechanisms are pleiotropic, but secretion systems have a key role in transporting effectors, toxins and other virulence factors from the bacteria into the environment or target host cells. In recent years, a novel secretion system, the Type VI secretion system (T6SS), was shown to be important for P. aeruginosa virulence. Of three T6SSs encoded on the P. aeruginosa genome, the H1-T6SS is important for P. aeruginosa to compete with other bacteria and to establish chronic infections. H1-T6SS is involved in the secretion of at least three bacteriolytic effectors, Tse1-3, whereas no effectors have been identified for H2- and H3-T6SS. We hypothesise that proteins secreted by these two systems mediate other important aspects of P. aeruginosa virulence and their identification and characterisation are crucial to further understanding the H2- and H3-T6SS function and P. aeruginosa pathogenesis. This project will identify these effectors, using three approaches: 1) identification of regulatory elements controlling H2- and H3-T6SS gene expression in order to up-regulate expression of the H2- or H3-T6SS clusters and other co-regulated genes; 2) analysis of H1-, H2- and H3-T6SS gene expression in biofilm conditions using flowcells; 3) identification of H2- and H3-T6SS secreted effector proteins via secretome analysis of strains that have up-regulated expression of H2 and H3-T6SS clusters. The discovery of these secreted factors will be a breakthrough, since only a very limited number of T6SS substrates have been identified. It will give new insights into P. aeruginosa virulence and could be exploited for development of new therapeutic options.'

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