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Revealing the cell biology of a predatory bacterium in space and time

The model predatory bacterium Bdellovibrio bacteriovorus feeds upon other Gram-negative bacteria, including pathogenic strains. Upon entry inside the periplasmic space of the prey envelope, B. bacteriovorus initiates an exquisite... ver más

31/12/2024

UCLouvain

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

UNIVERSITE CATHOLIQUE DE LOUVAIN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Ver 2 Participantes

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2018-09-12

Línea de financiación objetivo El proyecto se financió a través de la siguiente ayuda:

ERC-2018-STG: ERC Starting Grant

I+D

Cerrada hace 7 años

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2 Participantes

UCLouvain

1.50M€ | Lider

INNOVAXIS

209.43K€ | Participante

Últimas noticias

29-11-2024: IDAE En las últimas 48 horas el Organismo IDAE ha otorgado 4 concesiones

29-11-2024: ECE En las últimas 48 horas el Organismo ECE ha otorgado 2 concesiones

29-11-2024: CMVAMADRID En las últimas 48 horas el Organismo CMVAMADRID ha otorgado 37 concesiones

Duración del proyecto: 75 meses Fecha Inicio: 2018-09-12
Fecha Fin: 2024-12-31

Líder del proyecto

UNIVERSITE CATHOLIQUE DE LOUVAIN

TRL 4-5

Presupuesto del proyecto 1M€

Descripción del proyecto The model predatory bacterium Bdellovibrio bacteriovorus feeds upon other Gram-negative bacteria, including pathogenic strains. Upon entry inside the periplasmic space of the prey envelope, B. bacteriovorus initiates an exquisite developmental program in which it digests the host resources while ensuring the osmotic stability of its niche. In the periplasm, the predator cell grows as a polyploid filament, before releasing a variable, odd or even number of daughter cells upon a non-binary division event. The progeny is then liberated to hunt for new prey. B. bacteriovorus is now attracting a revived attention as several in vivo models of infection established its promising living antibiotic potential. Despite this remarkable lifestyle, the fields of bacterial cell biology and antibiotics research still lack a comprehensive understanding of how this micro-predator thrives inside the envelope of other bacteria. Indeed, the molecular factors behind the non-canonical cell biology of B. bacteriovorus are still largely mysterious. My goal is to tackle this question by unraveling the novel mechanisms that control key processes of the fascinating cell cycle of this bacterium, using a unique combination of quantitative live imaging of predation at the single-cell level, bacterial genetics and molecular biology. Specifically, I aim to (i) uncover how the genetic information is organized, copied and partitioned in a polyploid cell before non-binary division, (i) shed light on factors that polarize the predator cell, and (iii) discover prey envelope features that influence the predation cycle. Because the biology of B. bacteriovorus stands beyond textbook standards, our results will provide mechanistic insight into important biological questions that remained unexplored using classical model species. If successful, this project will advance bacterial cell biology, while offering an innovative contribution to the fight against antibiotics-resistant pathogens.

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