JOURNAL ARTICLE
RESEARCH SUPPORT, N.I.H., EXTRAMURAL
RESEARCH SUPPORT, NON-U.S. GOV'T
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C/EBPα is required for development of dendritic cell progenitors.

Blood 2013 May 17
Dendritic cells (DCs) are master regulators of the immune system, but molecular regulation of early DC differentiation has been poorly understood. Here, we report that the transcription factor C/EBPα coordinates the development of progenitor cells required for production of multiple categories of DCs. C/EBPα was needed for differentiation from stem/progenitor cells to common DC progenitors (CDPs), but not for transition of CDP to mature DCs. C/EBPα deletion in mature DCs did not affect their numbers or function, suggesting that this transcription factor is not needed for maintenance of DCs in lymphoid tissues. ChIP-seq and microarrays were used to identify candidate genes regulated by C/EBPα and required for DC formation. Genes previously shown to be critical for DC formation were bound by C/EBPα, and their expression was decreased in the earliest hematopoietic compartments in the absence of C/EBPα. These data indicate that C/EBPα is important for the earliest stages of steady-state DC differentiation.

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