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Generation of Human Monocyte-derived Dendritic Cells from Whole Blood
Published on: December 24, 2016
Intrasplenic steady-state dendritic cell precursors that are distinct from monocytes
Shalin H Naik1, Donald Metcalf, Annemarie van Nieuwenhuijze
1The Walter and Eliza Hall Institute of Medical Research and the Cooperative Research Centre for Vaccine Technology, Parkville, Victoria 3050, Australia. naik@wehi.edu.au
Abstract:
Immediate precursors of the many subtypes of dendritic cells (DCs) remain obscure. Here we purified a splenic precursor population that produced all splenic CD8+ and CD8- conventional DCs (cDCs) but not plasmacytoid DCs or other lineages. This 'pre-cDC' population included cells 'precommitted' to form either CD8+ or CD8- cDCs. The pre-cDCs, which comprised 0.05% of splenocytes, expressed a CD11c(int) CD45RA(lo) CD43(int) SIRP-alpha(int) CD4- CD8- major histocompatibility complex class II-negative surface phenotype. The pre-cDCs were not monocytes. Monocytes generated few cDCs in steady-state recipient mice. However, when transferred into mice with an inflammatory milieu dependent on granulocyte-macrophage colony-stimulating factor, monocytes produced a distinct type of splenic DC. Thus, the inflammatory status of the host influences the developmental origin and type of DC present in lymphoid tissues.
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