Understanding how mitochondria compete with Toxoplasma for nutrients to defend t...
Understanding how mitochondria compete with Toxoplasma for nutrients to defend the host cell
Once a pathogen has eluded immune defences to establish a replicative niche in the cytosol, it requires nutrients to grow—the same nutrients that host organelles need for their biogenesis and to perform cellular metabolic processe...
ver más
¿Tienes un proyecto y buscas un partner? Gracias a nuestro motor inteligente podemos recomendarte los mejores socios y ponerte en contacto con ellos. Te lo explicamos en este video
Proyectos interesantes
RTI2018-098593-B-I00
CUERPOS LIPIDICOS Y MITOCONDRIAS: CENTROS INMUNES QUE CONTRO...
303K€
Cerrado
XABA
Xenophagy and bacterial avoidance
2M€
Cerrado
Myco_Metabolism
How iron and manganese affect the central metabolism in path...
171K€
Cerrado
AGL2010-16678
MODULADORES METABOLICOS CONTRA LAS PARASITOSIS: LEISHMANIOSI...
109K€
Cerrado
CNS2023-144831
Fisiopatología de órganos y sistemas
198K€
Cerrado
EUR2022-134061
CUERPOS LIPIDICOS DE EUCARIOTAS: PRIMEROS RESPONDEDORES DE L...
90K€
Cerrado
Información proyecto MITOvTOXO
Duración del proyecto: 65 meses
Fecha Inicio: 2019-12-13
Fecha Fin: 2025-05-31
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
Once a pathogen has eluded immune defences to establish a replicative niche in the cytosol, it requires nutrients to grow—the same nutrients that host organelles need for their biogenesis and to perform cellular metabolic processes. The microbe must therefore compete with organelles for these nutrients.. This organelle-microbe competition for metabolites is a fundamental, but little understood aspect of the host–pathogen interaction. I recently defined one example of this competition, between mitochondria and the human parasite Toxoplasma gondii. During infection, Toxoplasma exploits host lipophagy to gain access to cellular fatty acids essential for its growth. To counter this, host mitochondria fuse to enhance fatty acid uptake, limiting Toxoplasma access to a key host resource and thus restricting its growth. This work shows that mitochondria—essentially domesticated parasites—metabolically defend the cell during infection, and opens several key questions that I will address in this proposal, including: a) by what mechanism do mitochondria enhance fatty acid oxidation to defend the cell against fatty acid siphoning by microbes?; b) can mitochondrial fatty acid oxidation be exploited to restrict microbial growth in vivo?; and c) do mitochondria play a broader role in cellular defence by sequestering other essential metabolites from microbes? The answers to these questions will lead to a deeper understanding of the role of mitochondria in the cellular response to microbes, and begin to address our long-term goal of understanding how human metabolism influences the progression of infectious disease. The innovative approaches I describe here are broadly applicable to dissecting the metabolic interactions between other organelles and diverse infectious agents.