期刊
IMMUNITY
卷 39, 期 5, 页码 925-938出版社
CELL PRESS
DOI: 10.1016/j.immuni.2013.10.004
关键词
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类别
资金
- CNRS
- INSERM
- ANR (SkinDC)
- European Communities Framework Program 7 [HEALTH-F2-2008-223404]
- Marie Curie reintegration grant
- BELSPO
- I2HD CIML-SANOFI project
- Ministere de la Recherche
- MASTERSWITCH Project
- European Communities [237109]
- Sanofi
- FWO
- SYBILLA Project
In the skin, the lack of markers permitting the unambiguous identification of macrophages and of conventional and monocyte-derived dendritic cells (DCs) complicates understanding of their contribution to skin integrity and to immune responses. By combining CD64 and CCR2 staining, we successfully identified each of these cell types and studied their origin, transcriptomic signatures, and migratory and T cell stimulatory properties. We also analyzed the impact of microbiota on their development and their contribution to skin inflammation during contact hypersensitivity. Dermal macrophages had a unique scavenging role and were unable to migrate and activate T cells. Conventional dermal DCs excelled both at migrating and activating T cells. In the steady-state dermis, monocyte-derived DCs are continuously generated by extravasated Ly-6C(hi) monocytes. Their T cell stimulatory capacity combined with their poor migratory ability made them particularly suited to activate skin-tropic T cells. Therefore, a high degree of functional specialization occurs among the mononuclear phagocytes of the skin.
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