A TNF-IL-1 circuit controls Yersinia within intestinal granulomas

Tumor necrosis factor (TNF) is a pleiotropic inflammatory cytokine that mediates antimicrobial defense and granuloma formation in response to infection by numerous pathogens. colonizes the intestinal mucosa and induces recruitment of neutrophils and inflammatory monocytes into organized immune struc...

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Published inbioRxiv : the preprint server for biology
Main Authors Matsuda, Rina, Sorobetea, Daniel, Zhang, Jenna, Peterson, Stefan T, Grayczyk, James P, Herrmann, Beatrice, Yost, Winslow, O'Neill, Rosemary, Bohrer, Andrea C, Lanza, Matthew, Assenmacher, Charles-Antoine, Mayer-Barber, Katrin D, Shin, Sunny, Brodsky, Igor E
Format Journal Article
LanguageEnglish
Published United States 22.04.2023
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Summary:Tumor necrosis factor (TNF) is a pleiotropic inflammatory cytokine that mediates antimicrobial defense and granuloma formation in response to infection by numerous pathogens. colonizes the intestinal mucosa and induces recruitment of neutrophils and inflammatory monocytes into organized immune structures termed pyogranulomas that control the bacterial infection. Inflammatory monocytes are essential for control and clearance of within intestinal pyogranulomas, but how monocytes mediate restriction is poorly understood. Here, we demonstrate that TNF signaling in monocytes is required for bacterial containment following enteric infection. We further show that monocyte-intrinsic TNFR1 signaling drives production of monocyte-derived interleukin-1 (IL-1), which signals through IL-1 receptor on non-hematopoietic cells to enable pyogranuloma-mediated control of infection. Altogether, our work reveals a monocyte-intrinsic TNF-IL-1 collaborative circuit as a crucial driver of intestinal granuloma function, and defines the cellular target of TNF signaling that restricts intestinal infection.