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AGAPE

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Accessory Genome Accountability in Pseudomonas aeruginosa Persistent Infections

Bacterial survival to antibiotic treatment poses an urgent problem to humanity, causing 25.000 deaths per year in the European Union alone. The inability to fully eradicate pathogens with antibiotics leads to the establishment of... ver más

30/06/2023

TECHNICAL UNIVERSI...

207K€

Presupuesto del proyecto: 207K€

Líder del proyecto

DANMARKS TEKNISKE UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2023-06-30

MSCA-IF-2020: Individual Fellowships

I+D

Cerrada hace 4 años

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Información adicional privada

No hay información privada compartida para este proyecto. Habla con el coordinador.

1 Participantes

TECHNICAL UNIVERSITY OF DENM...

207.31K€ | Lider

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Duración del proyecto: 27 meses Fecha Inicio: 2021-03-24
Fecha Fin: 2023-06-30

Líder del proyecto

DANMARKS TEKNISKE UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 207K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Bacterial survival to antibiotic treatment poses an urgent problem to humanity, causing 25.000 deaths per year in the European Union alone. The inability to fully eradicate pathogens with antibiotics leads to the establishment of persistent infections (PIs). Pseudomonas aeruginosa, an opportunistic pathogen, is found chronically in the airways of 70% of Cystic Fibrosis (CF) patients. In CF, the anomalous production of mucus in the lung promotes the establishment of bacteria, with infections decreasing the life quality and expectancy of patients. The mechanisms by which P. aeruginosa is able to escape treatment and generate PIs within the CF lung have not been fully elucidated. Mostly, the success of P. aeruginosa relies on its adaptability, which derives from its large genome carrying genes for survival in a wide spectrum of environments. Most of these genes are not conserved among strains, composing the accessory genome (AG), which is built up through horizontal gene transfer (HGT). Previous studies have identified components of the AG involved in virulence and resistance, yet the extent of the AG involvement in PIs is unknown. Through AGAPE I seek to elucidate the relevance of the AG in the establishment of PIs in CF lungs. I will do so by studying both the conformation and function of the AG, through novel CRISPR-Cas tools in P. aeruginosa. First, I will determine the identity and quantity of HGT during infection by recording transfer events with a CRISPR-Cas recorder system. Second, I will generate individual and combinatorial knockdowns of every accessory gene through CRISPR interference (CRISPRi), to screen the effects of the repression on fitness during infection. I will follow the infections of the generated strains on lung organoids derived from the corresponding hosts. Overall, this bona fide action will allow to uncover novel mechanisms behind PIs relying on accessory genes, and to identify novel markers and targets to improve patient treatment.

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