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- W4286203205 abstract "Successful elimination of bacteria in phagocytes occurs in the phago-lysosomal system, but also depends on mitochondrial pathways. Yet, how these two organelle systems communicate is largely unknown. Here we identify the lysosomal biogenesis factor transcription factor EB (TFEB) as regulator for phago-lysosome-mitochondria crosstalk in macrophages. By combining cellular imaging and metabolic profiling, we find that TFEB activation, in response to bacterial stimuli, promotes the transcription of aconitate decarboxylase (Acod1, Irg1) and synthesis of its product itaconate, a mitochondrial metabolite with antimicrobial activity. Activation of the TFEB-Irg1-itaconate signalling axis reduces the survival of the intravacuolar pathogen Salmonella enterica serovar Typhimurium. TFEB-driven itaconate is subsequently transferred via the Irg1-Rab32-BLOC3 system into the Salmonella-containing vacuole, thereby exposing the pathogen to elevated itaconate levels. By activating itaconate production, TFEB selectively restricts proliferating Salmonella, a bacterial subpopulation that normally escapes macrophage control, which contrasts TFEB's role in autophagy-mediated pathogen degradation. Together, our data define a TFEB-driven metabolic pathway between phago-lysosomes and mitochondria that restrains Salmonella Typhimurium burden in macrophages in vitro and in vivo." @default.
- W4286203205 created "2022-07-21" @default.
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- W4286203205 date "2022-07-21" @default.
- W4286203205 modified "2023-10-14" @default.
- W4286203205 title "TFEB induces mitochondrial itaconate synthesis to suppress bacterial growth in macrophages" @default.
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- W4286203205 doi "https://doi.org/10.1038/s42255-022-00605-w" @default.
- W4286203205 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35864246" @default.
- W4286203205 hasPublicationYear "2022" @default.
- W4286203205 type Work @default.