Chapter title |
Transcriptional Control of Dendritic Cell Differentiation.
|
---|---|
Chapter number | 378 |
Book title |
Transcriptional Control of Lineage Differentiation in Immune Cells
|
Published in |
Current topics in microbiology and immunology, May 2014
|
DOI | 10.1007/82_2014_378 |
Pubmed ID | |
Book ISBNs |
978-3-31-907394-1, 978-3-31-907395-8
|
Authors |
Izumi Sasaki, Tsuneyasu Kaisho |
Editors |
Wilfried Ellmeier, Ichiro Taniuchi |
Abstract |
Dendritic cells (DCs) are professional antigen presenting cells involved critically not only in provoking innate immune responses but also in establishing adaptive immune responses. Dendritic cells are heterogenous and divided into several subsets, including plasmactyoid DCs (pDCs) and several types of conventional DCs (cDCs), which show subset-specific functions. Plasmactyoid DCs are featured by their ability to produce large amounts of type I interferons (IFNs) in response to nucleic acid sensors, TLR7 and TLR9 and involved in anti-viral immunity and pathogenesis of certain autoimmune disorders such as psoriasis. Conventional DCs include the DC subsets with high crosspresentation activity, which contributes to anti-viral and anti-tumor immunity. These subsets are generated from hematopoietic stem cells (HSCs) via several intermediate progenitors and the development is regulated by the transcriptional mechanisms in which subset-specific transcription factors play major roles. We have recently found that an Ets family transcription factor, SPI-B, which is abundantly expressed in pDCs among DC subsets, plays critical roles in functions and late stage development of pDCs. SPI-B functions in cooperation with other transcription factors, especially, interferon regulatory factor (IRF) family members. Here we review the transcription factor-based molecular mechanisms for generation and functions of DCs, mainly by focusing on the roles of SPI-B and its relatives. |
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