PMID- 12393628 OWN - NLM STAT- MEDLINE DCOM- 20030128 LR - 20210206 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 100 IP - 13 DP - 2002 Dec 15 TI - Characterization of human blood dendritic cell subsets. PG - 4512-20 AB - Dendritic cells (DCs) are key antigen-presenting cells for stimulating immune responses and they are now being investigated in clinical settings. Although defined as lineage-negative (Lin(-)) HLA-DR(+) cells, significant heterogeneity in these preparations is apparent, particularly in regard to the inclusion or exclusion of CD14(+), CD16(+), and CD2(+) cells. This study used flow cytometry and a panel of monoclonal antibodies (mAbs), including reagents from the 7th Leukocyte Differentiation Antigen Workshop, to define the cellular composition of 2 standardized peripheral blood mononuclear cell (PBMCs)-derived Lin(-) HLA-DR(+) preparations. Lin(-) cells were prepared from PBMCs by depletion with CD3, CD14, CD19, CD11b, and either CD16 or CD56 mAbs. Analysis of the CD16-replete preparations divided the Lin(-) HLA-DR(+) population into 5 nonoverlapping subsets (mean +/- 1 SD): CD123 (mean = 18.3% +/- 9.7%), CD1b/c (18.6% +/- 7.6%), CD16 (49.6% +/- 8.5%), BDCA-3 (2.7% +/- 1.4%), and CD34 (5.0% +/- 2.4%). The 5 subsets had distinct phenotypes when compared with each other, monocytes, and monocyte-derived DCs (MoDCs). The CD85 family, C-type lectins, costimulatory molecules, and differentiation/activation molecules were also expressed differentially on the 5 Lin(-) HLA-DR(+) subsets, monocytes, and MoDCs. The poor viability of CD123(+) DCs in vitro was confirmed, but the CD16(+) CD11c(+) DC subset also survived poorly. Finally, the individual subsets used as stimulators in allogeneic mixed leukocyte reactions were ranked by their allostimulatory capacity as CD1b/c > CD16 > BDCA-3 > CD123 > CD34. These data provide an opportunity to standardize the DC populations used for future molecular, functional and possibly even therapeutic studies. FAU - MacDonald, Kelli P A AU - MacDonald KP AD - Dendritic Cell Laboratory, Mater Medical Research Institute, Mater Misericordiae Hospitals, South Brisbane, Australia. FAU - Munster, David J AU - Munster DJ FAU - Clark, Georgina J AU - Clark GJ FAU - Dzionek, Andrzej AU - Dzionek A FAU - Schmitz, Juergen AU - Schmitz J FAU - Hart, Derek N J AU - Hart DN LA - eng PT - Comparative Study PT - Journal Article DEP - 20020815 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antigens, CD) RN - 0 (Antigens, Surface) RN - 0 (Lectins) SB - IM MH - Adult MH - Antibodies, Monoclonal/immunology MH - Antigen Presentation MH - Antigens, CD/analysis MH - Antigens, Surface/analysis MH - Blood Cells/classification MH - Cell Separation MH - Cell Survival MH - Cells, Cultured/cytology MH - Dendritic Cells/chemistry/*classification/immunology MH - Flow Cytometry MH - Gene Expression Profiling MH - Humans MH - Immunophenotyping MH - Lectins/metabolism MH - Lymphocyte Culture Test, Mixed MH - Monocytes/cytology MH - Reference Standards EDAT- 2002/10/24 04:00 MHDA- 2003/01/29 04:00 CRDT- 2002/10/24 04:00 PHST- 2002/10/24 04:00 [pubmed] PHST- 2003/01/29 04:00 [medline] PHST- 2002/10/24 04:00 [entrez] AID - S0006-4971(20)53658-6 [pii] AID - 10.1182/blood-2001-11-0097 [doi] PST - ppublish SO - Blood. 2002 Dec 15;100(13):4512-20. doi: 10.1182/blood-2001-11-0097. Epub 2002 Aug 15.