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CoPathoPhage

Financiado

Cerrado

Pathogen phage cooperation during mammalian infection

Most bacterial pathogens are lysogens, namely carry DNA of active phages within their genome, referred to as prophages. While these prophages have the potential to turn under stress into infective viruses which kill their host bac... ver más

30/09/2025

TAU

2M€

Presupuesto del proyecto: 2M€

Líder del proyecto

TEL AVIV UNIVERSITY No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Ver 2 Participantes

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2019-02-28

ERC-2018-COG: ERC Consolidator Grant

I+D

Cerrada hace 6 años

0% 100% 100%

Información adicional privada

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

2 Participantes

TAU

2.20M€ | Lider

SENER INGENIERIA Y SISTEMAS

96.06K€ | Participante

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Duración del proyecto: 79 meses Fecha Inicio: 2019-02-28
Fecha Fin: 2025-09-30

Líder del proyecto

TEL AVIV UNIVERSITY No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 2M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Most bacterial pathogens are lysogens, namely carry DNA of active phages within their genome, referred to as prophages. While these prophages have the potential to turn under stress into infective viruses which kill their host bacterium in a matter of minutes, it is unclear how pathogens manage to survive this internal threat under the stresses imposed by their invasion into mammalian cells. In the proposed project, we will study the hypothesis that a complex bacteria-phage cooperative adaptation supports virulence during mammalian infection while preventing inadvertent killing by phages. Several years ago, we uncovered a novel pathogen-phage interaction, in which an infective prophage promotes the virulence of its host, the bacterial pathogen Listeria monocytogenes (Lm), via adaptive behaviour. More recently, we discovered that the prophage, though fully infective, is non-autonomous- completely dependent on regulatory factors derived from inactive prophage remnants that reside in the Lm chromosome. These findings lead us to propose that the intimate cross-regulatory interactions between all phage elements within the genome (infective and remnant), are crucial in promoting bacteria-phage patho-adaptive behaviours in the mammalian niche and thereby bacterial virulence. In the proposed project, we will investigate specific cross-regulatory and cooperative mechanisms of all the phage elements, study the domestication of phage remnant-derived regulatory factors, and examine the hypothesis that they collectively form an auxiliary phage-control system that tempers infective phages. Finally, we will examine the premise that the mammalian niche drives the evolution of temperate phages into patho-adaptive phages, and that phages that lack this adaptation may kill host pathogens during infection. This work is expected to provide novel insights into bacteria-phage coexistence in mammalian environments and to facilitate the development of innovative phage therapy strategies.

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