PMID- 19234214 OWN - NLM STAT- MEDLINE DCOM- 20090421 LR - 20090223 IS - 1550-6606 (Electronic) IS - 0022-1767 (Linking) VI - 182 IP - 5 DP - 2009 Mar 1 TI - Differential migration of epidermal and dermal dendritic cells during skin infection. PG - 3165-72 LID - 10.4049/jimmunol.0802950 [doi] AB - Dendritic cells (DCs) are extremely heterogeneous, most evident in the skin where a variety of different subsets have been identified in recent years. DCs of healthy skin include a number of distinct populations in the dermal layer as well as the well-characterized Langerhans cells (LCs) of the epidermis. These steady-state populations are augmented during bouts of local inflammation by additional monocyte-derived DCs. In an effort to better understand the distinction between the different subsets, we examined their behavior following skin infection with HSV. LC emigration rapidly followed appearance of virus in the skin and resulted in depopulation of regions in areas surrounding infected nerve endings. A separate DC population was found to accumulate within the dermis under patches of active epidermal infection with at least some derived from blood monocyte precursors. Ag-positive DCs could occasionally be found in these dermal accumulations, although they represented a minority of DCs in these areas. In addition, infected DCs appeared compromised in their trafficking capabilities and were largely absent from the migrating population. On resolution of skin disease, LCs repopulated the reformed epidermis and these were of mixed origin, with around half entering from the circulation and the remainder derived from local progenitors. Overall, our results show a range of migrational complexities between distinct skin DC populations as a consequence of localized infection. FAU - Eidsmo, Liv AU - Eidsmo L AD - Department of Microbiology and Immunology, University of Melbourne, Melbourne Victoria, Australia. FAU - Allan, Rhys AU - Allan R FAU - Caminschi, Irina AU - Caminschi I FAU - van Rooijen, Nico AU - van Rooijen N FAU - Heath, William R AU - Heath WR FAU - Carbone, Francis R AU - Carbone FR LA - eng GR - Howard Hughes Medical Institute/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R SB - IM MH - Animals MH - Cell Aggregation/immunology MH - Dendritic Cells/*immunology/pathology/virology MH - Dermis/*immunology/pathology/virology MH - Epidermis/*immunology/pathology/virology MH - Herpes Simplex/*immunology/*pathology MH - Herpesvirus 1, Human/*immunology MH - Langerhans Cells/immunology/pathology/virology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Monocytes/immunology/pathology/virology MH - Stem Cells/immunology/pathology/virology EDAT- 2009/02/24 09:00 MHDA- 2009/04/22 09:00 CRDT- 2009/02/24 09:00 PHST- 2009/02/24 09:00 [entrez] PHST- 2009/02/24 09:00 [pubmed] PHST- 2009/04/22 09:00 [medline] AID - 182/5/3165 [pii] AID - 10.4049/jimmunol.0802950 [doi] PST - ppublish SO - J Immunol. 2009 Mar 1;182(5):3165-72. doi: 10.4049/jimmunol.0802950.