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Mouse Plasmacytoid Dendritic Cells Derive Exclusively from Estrogen-resistant Myeloid Progenitors

Overview
Journal Blood
Publisher Elsevier
Specialty Hematology
Date 2006 Mar 2
PMID 16507769
Citations 23
Authors
Affiliations
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Abstract

Current models predict that mouse plasmacytoid dendritic cells (PDCs) derive from lymphoid progenitors. However, we show PDCs arise exclusively from common myeloid progenitors (CMPs) characterized by low-level expression of several lymphoid-associated genes, including a RAG2/GFP reporter transgene. This conclusion is supported by both adoptive transfer experiments and an estrogen treatment strategy that led to marked depletion of very early lymphoid progenitors without affecting RAG2/GFP(+) CMPs or the developmental kinetics, RAG-mediated recombinase activity, and cytokine production of PDCs. These data suggest that PDCs arise exclusively from early myeloid progenitors and that promiscuous low-level expression of lymphoid-associated genes is a general feature of PDC progenitors among CMPs.

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