
pmid: 40358588
pmc: PMC12071193
Conventional dendritic cells (cDCs) are sentinel cells that play a crucial role in both innate and adaptive immune responses. cDCs originate from a progenitor (pre-cDC) in the bone marrow (BM) that travels via the blood to seed peripheral tissues before locally differentiating into functional cDC1 and cDC2 cells, as part of a process known as cDCpoiesis. How cDCpoiesis is regulated and whether this affects the output of cDCs is poorly understood. In this study, we show that DNGR-1, an innate immune receptor expressed by cDC progenitors and type 1 cDCs, can regulate cDCpoiesis in mice. In a competitive chimera setting, cDC progenitors lacking DNGR-1 exhibit increased proliferation and tissue migratory potential. Compared with their WT counterparts, DNGR-1–deficient cDC progenitor cells display superior colonization of peripheral tissues but an altered distribution. These findings suggest that cDCpoiesis can be regulated in part by precursor cell-intrinsic processes driven by signals from innate immune receptors such as DNGR-1 that may respond to alterations in the BM milieu.
Knockout, Immunology, Bone Marrow Cells/cytology, Bone Marrow Cells, Dendritic Cells/cytology, Inbred C57BL, Mice, Cell Movement, Receptors, Stem Cells/cytology, Innate, Animals, Receptors, Immunologic, Cell Proliferation, Mice, Knockout, Receptors, Immunologic/genetics, Immunologic/genetics, Stem Cells, FOS: Clinical medicine, Immunity, Brief Definitive Report, Cell Differentiation, Dendritic Cells, Immunity, Innate, Mice, Inbred C57BL, Cell Movement/immunology
Knockout, Immunology, Bone Marrow Cells/cytology, Bone Marrow Cells, Dendritic Cells/cytology, Inbred C57BL, Mice, Cell Movement, Receptors, Stem Cells/cytology, Innate, Animals, Receptors, Immunologic, Cell Proliferation, Mice, Knockout, Receptors, Immunologic/genetics, Immunologic/genetics, Stem Cells, FOS: Clinical medicine, Immunity, Brief Definitive Report, Cell Differentiation, Dendritic Cells, Immunity, Innate, Mice, Inbred C57BL, Cell Movement/immunology
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