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Onder, Lucas; Prados, Alejandro; Koliaraki, Vasiliki; Mörbe, Urs Michael; Lütge, Mechthild; Cheng, Hung Wei; Ludewig, Burkhard; Kollias, George
The Journal of immunology (1950), 05/2021, Letnik: 206, Številka: 1_SupplementJournal Article
Abstract Fibroblastic reticular cells (FRCs) determine the organization of lymphoid organs and control immune cell interactions. While the cellular and molecular mechanisms underlying of FRC differentiation in lymph nodes and the splenic white pulp have been elaborated to some extent, in Peyer’s patches (PPs) they remain elusive. Using a combination of single-cell transcriptomics and cell fate-mapping in advanced mouse models, we found that PP formation in the mouse embryo is initiated by an expansion of perivascular FRC precursors, followed by FRC differentiation from subepithelial progenitors. Single-cell transcriptomics and cell fate-mapping confirmed the convergence of perivascular and subepithelial FRC lineages. Furthermore, lineage-specific loss and gain-of-function approaches revealed that the two FRC lineages synergistically direct PP organization, maintain intestinal microbiome homeostasis and control anti-coronavirus immune responses in the gut. Collectively, this study reveals a distinct mosaic patterning program that generates key stromal cell infrastructures for the control of intestinal immunity.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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