PMID- 12738673 OWN - NLM STAT- MEDLINE DCOM- 20031002 LR - 20210206 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 102 IP - 5 DP - 2003 Sep 1 TI - Functional comparison of DCs generated in vivo with Flt3 ligand or in vitro from blood monocytes: differential regulation of function by specific classes of physiologic stimuli. PG - 1753-63 AB - Dendritic cells (DCs) are a family of leukocytes that initiate T- and B-cell immunity against pathogens. Migration of antigen-loaded DCs from sites of infection into draining lymphoid tissues is fundamental to the priming of T-cell immune responses. In humans, the major peripheral blood DC (PBDC) types, CD1c+ DCs and interleukin 3 receptor-positive (IL-3R+) plasmacytoid DCs, are significantly expanded in vivo with the use of Flt3 ligand (FL). DC-like cells can also be generated from monocyte precursors (MoDCs). A detailed comparison of the functional potential of these types of DCs (in an autologous setting) has yet to be reported. Here, we compared the functional capacity of FL-expanded CD1c+ PBDCs with autologous MoDCs in response to 3 different classes of stimuli: (1) proinflammatory mediators, (2) soluble CD40 ligand trimer (CD40L), and (3) intact bacteria (Escherichia coli). Significant differences in functional capacities were found with respect to changes in phenotype, migratory capacity, cytokine secretion, and T-cell stimulation. MoDCs required specific stimuli for the expression of functions. They responded vigorously to CD40L or E coli, expressing cytokines known to regulate interferon-gamma (IFN-gamma) in T cells (IL-12p70, IL-18, and IL-23), but required prostaglandin E2 (PGE2) during stimulation to migrate to chemokines. In contrast, PBDCs matured in response to minimal stimulation, rapidly acquired migratory function in the absence of PGE2-containing stimuli, and were low cytokine producers. Interestingly, both types of DCs were equivalent with respect to stimulation of allogeneic T-cell proliferation and presentation of peptides to cytotoxic T lymphocyte (CTL) lines. These distinct differences are of particular importance when considering the choice of DC types for clinical applications. FAU - Jefford, Michael AU - Jefford M AD - Ludwig Institute Oncology Unit, Austin and Repatriation Medical Centre, Studley Rd, Heidelberg, Victoria 3084, Australia. FAU - Schnurr, Max AU - Schnurr M FAU - Toy, Tracey AU - Toy T FAU - Masterman, Kelly-Anne AU - Masterman KA FAU - Shin, Amanda AU - Shin A FAU - Beecroft, Tina AU - Beecroft T FAU - Tai, Tsin Yee AU - Tai TY FAU - Shortman, Ken AU - Shortman K FAU - Shackleton, Mark AU - Shackleton M FAU - Davis, Ian D AU - Davis ID FAU - Parente, Phil AU - Parente P FAU - Luft, Thomas AU - Luft T FAU - Chen, Weisan AU - Chen W FAU - Cebon, Jonathan AU - Cebon J FAU - Maraskovsky, Eugene AU - Maraskovsky E LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20030508 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Antigens, CD1) RN - 0 (CD1C protein, human) RN - 0 (Cytokines) RN - 0 (Glycoproteins) RN - 0 (Inflammation Mediators) RN - 0 (Membrane Proteins) RN - 0 (Peptides) RN - 0 (flt3 ligand protein) RN - 147205-72-9 (CD40 Ligand) SB - IM MH - Antigens, CD1/metabolism MH - CD40 Ligand/pharmacology MH - Cell Differentiation/drug effects/immunology MH - Cell Division/immunology MH - Cell Movement/immunology MH - Cells, Cultured MH - Cytokines/biosynthesis MH - Dendritic Cells/*cytology/*immunology/metabolism MH - Escherichia coli MH - Glycoproteins/metabolism MH - Humans MH - Immunophenotyping MH - In Vitro Techniques MH - Inflammation Mediators/pharmacology MH - Lymphocyte Activation/immunology MH - Melanoma/immunology MH - Membrane Proteins/*pharmacology MH - Monocytes/*cytology MH - Peptides/pharmacology MH - Stimulation, Chemical MH - T-Lymphocytes/cytology/immunology EDAT- 2003/05/10 05:00 MHDA- 2003/10/03 05:00 CRDT- 2003/05/10 05:00 PHST- 2003/05/10 05:00 [pubmed] PHST- 2003/10/03 05:00 [medline] PHST- 2003/05/10 05:00 [entrez] AID - S0006-4971(20)44162-X [pii] AID - 10.1182/blood-2002-12-3854 [doi] PST - ppublish SO - Blood. 2003 Sep 1;102(5):1753-63. doi: 10.1182/blood-2002-12-3854. Epub 2003 May 8.