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Slow growth

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Deciphering the molecular mechanism s behind the evolution of Mycobacterium tub...

Deciphering the molecular mechanism s behind the evolution of Mycobacterium tuberculosis towards slow growth and the impact on virulence and persistence Tuberculosis (TB) is an infectious disease caused by the bacterial pathogen Mycobacterium tuberculosis (Mtb), responsible for 1.5 million deaths per annum. Moreover, due to the ability of Mtb to persist in the host, a further one... ver más

31/05/2023

185K€

Presupuesto del proyecto: 185K€

Líder del proyecto

INSTITUT PASTEUR 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 2023-05-31

MSCA-IF-2020: Individual Fellowships Objective:The goal of the Individual Fellowships is to enhance the creative and innovative potential...

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1 Participantes

184.71K€ | Lider

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Duración del proyecto: 26 meses Fecha Inicio: 2021-03-18
Fecha Fin: 2023-05-31

Líder del proyecto

INSTITUT PASTEUR 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 Tuberculosis (TB) is an infectious disease caused by the bacterial pathogen Mycobacterium tuberculosis (Mtb), responsible for 1.5 million deaths per annum. Moreover, due to the ability of Mtb to persist in the host, a further one third of the world population is latently infected and at risk for disease later in life. So far, the major vaccine against TB (Bacille Calmette-Guérin vaccine) has a limited impact on the global TB epidemic, as it does not always prevent pulmonary infections in adults. Furthermore, drug resistant strains have emerged and spread worldwide, threatening to render the actual 6-month treatment ineffective. In this context, studying the molecular mechanisms underlying mycobacterial virulence and persistence are crucial to develop new strategies to treat TB. A hallmark of Mtb is its slow growth rate. Recent phylogenetic studies have demonstrated that ancestral mycobacteria were first fast-growing bacteria, before an evolutionary separation into fast- and slow-growing mycobacteria. Intriguingly, all the main human mycobacterial pathogens, including Mtb, are slow-growers, suggesting the importance of slow-growth as a successful evolutionary step to become professional human pathogens. Using cutting-edge multidisciplinary approach, combining real-time single cell techniques and genetic approaches, I will, in collaboration with the Brosch lab, decipher the molecular mechanism(s) which led to the evolution of Mtb towards a slower growth, by taking advantage of the fast-growing M. canettii, closely related to the ancestor of Mtb and genetically tractable. I will also directly investigate the biological importance of slow growth on the virulence and persistence of Mtb by genetically engineering Mtb strains with different growth rates. Altogether, this work will lead to new perspectives and insights into host-Mtb interaction, important for the development of innovative therapeutic approaches.

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