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At the host bacteria interface Modulation of the intestinal microbiota and its...

At the host bacteria interface Modulation of the intestinal microbiota and its metabolic activity by Card9 signalling in health and Inflammatory Bowel Diseases The microbial community in the human intestine is crucial to the health and nutrition of the host. Loss of the fragile balance within this complex ecosystem is involved in numerous pathologies, including inflammatory bowel disease... ver más

20/02/2020

INRAE

185K€

Presupuesto del proyecto: 185K€

Líder del proyecto

INSTITUT NATIONAL DE RECHERCHE POUR LAGRICULT... 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 2020-02-20

MSCA-IF-2016: Individual Fellowships

I+D

Cerrada hace 8 años

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

1 Participantes

INRAE

185.08K€ | Lider

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Duración del proyecto: 35 meses Fecha Inicio: 2017-03-17
Fecha Fin: 2020-02-20

Líder del proyecto

INSTITUT NATIONAL DE RECHERCHE POUR LAGRICULT... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 185K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto The microbial community in the human intestine is crucial to the health and nutrition of the host. Loss of the fragile balance within this complex ecosystem is involved in numerous pathologies, including inflammatory bowel disease (IBD). The incidence of IBD is increasing and affects individuals in challenging years of their lives, with immunosuppressive treatments that are not always effective. IBD results from a combination of genetic predisposition, alteration of the gut microbiota, and environmental influences. Thus, deciphering the host-bacteria crosstalk will improve our understanding of IBD and enable new preventive and therapeutic strategies. Caspase recruitment domain 9 (Card9), one of the IBD susceptibility genes, codes for a protein involved in the response to fungi and bacteria. Sokol and colleagues showed that Card9-/- mice have an increased susceptibility to colitis, due to an altered gut microbiota that is not able to metabolise tryptophan into aryl hydrocarbon receptor (AhR) ligands. In humans, comparable mechanisms seem to be involved, as microbiota of IBD patients exhibit impaired production of AhR ligands, which mirrors the Card9-/- genotype. We aim to decipher the mechanisms involved in the modulation of the microbiota and its metabolic activity by Card9. For this purpose, we will take advantage of a strong collaborative environment and cutting-edge techniques, including gnotobiotic animals, cre-lox technology, transcriptomics, metabolomics and systems biology. Specifically, we plan to identify (i) new pathways and cell types involved in the modulation of the microbiota and its metabolic activity, and (ii) microorganisms and metabolites activating AhR receptors in the gut. This highly innovative and integrative project will allow me to expand my conceptual and technical knowledge of the gut-microbiota interface, acquire new key skills and strengthen my scientific network.

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