PMID- 17222766 OWN - NLM STAT- MEDLINE DCOM- 20070412 LR - 20071203 IS - 1083-8791 (Print) IS - 1083-8791 (Linking) VI - 13 IP - 1 Suppl 1 DP - 2007 Jan TI - Dendritic cells in transplantation and immune-based therapies. PG - 23-32 AB - Dendritic cells (DCs) are specialized, bone marrow-derived leukocytes critical to the onset of both innate and adaptive immunity. The divisions of labor among distinct human DC subtypes achieve the most effective balance between steady-state tolerance and the induction of innate and adaptive immunity against pathogens, tumors, and other insults. Maintenance of tolerance in the steady state is an active process involving resting or semimature DCs. Breakdowns in this homeostasis can result in autoimmunity. Perturbation of the steady state should first lead to the onset of innate immunity mediated by rapid responders in the form of plasmacytoid and monocyte-derived DC stimulators and natural killer (NK) and NK T-cell responders. These innate effectors then provide additional inflammatory cytokines, including interferon-gamma, which support the activation and maturation of resident and circulating populations of DCs. These are critical to the onset and expansion of adaptive immunity, including Th1, Th2, and cytotoxic T-lymphocyte responses. Rodent models are now revealing important data about distinct DC precursors, homeostasis of tissue-resident DCs, and DC turnover in response to inflammation and pathological conditions like graft-versus-host disease. The use of defined DC subtypes to stimulate both innate and adaptive immunity, either in combination or in a prime-boost vaccine sequence, may prove most useful clinically by harnessing both effector cell compartments. FAU - Young, James W AU - Young JW AD - Department of Medicine, Memorial Sloan-Kettering Cancer Center, Weill Medical College of Cornell University, New York, New York 10021, USA. youngjw@mskcc.org FAU - Merad, Miriam AU - Merad M FAU - Hart, Derek N J AU - Hart DN LA - eng GR - P01 CA23766/CA/NCI NIH HHS/United States GR - P01 CA59350/CA/NCI NIH HHS/United States GR - R01 CA83070/CA/NCI NIH HHS/United States GR - R01-CA 112100/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Biol Blood Marrow Transplant JT - Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation JID - 9600628 SB - IM MH - Animals MH - Bone Marrow Transplantation/immunology MH - Chimerism MH - Dendritic Cells/*immunology/transplantation MH - Graft vs Host Disease/*immunology/prevention & control MH - Graft vs Tumor Effect/immunology MH - Humans MH - *Immunotherapy, Adoptive MH - Mice MH - Transplantation, Homologous/immunology RF - 79 EDAT- 2007/01/16 09:00 MHDA- 2007/04/14 09:00 CRDT- 2007/01/16 09:00 PHST- 2007/01/16 09:00 [pubmed] PHST- 2007/04/14 09:00 [medline] PHST- 2007/01/16 09:00 [entrez] AID - S1083-8791(06)00726-9 [pii] AID - 10.1016/j.bbmt.2006.10.023 [doi] PST - ppublish SO - Biol Blood Marrow Transplant. 2007 Jan;13(1 Suppl 1):23-32. doi: 10.1016/j.bbmt.2006.10.023.