PMID- 12065531 OWN - NLM STAT- MEDLINE DCOM- 20020730 LR - 20210526 IS - 0019-9567 (Print) IS - 1098-5522 (Electronic) IS - 0019-9567 (Linking) VI - 70 IP - 7 DP - 2002 Jul TI - Hierarchy of susceptibility of dendritic cell subsets to infection by Leishmania major: inverse relationship to interleukin-12 production. PG - 3874-80 AB - Dendritic cells (DCs) are professional antigen-presenting cells which initiate and regulate T-cell immune responses. Here we show that murine splenic DCs can be ranked on the basis of their ability to phagocytose and harbor the obligately intracellular parasite Leishmania major. CD4(+) CD8(-) DCs are the most permissive host cells for L. major amastigotes, followed by CD4(-) CD8(-) DCs; CD4(-) CD8(+) cells are the least permissive. However, the least susceptible CD4(-) CD8(+) DC subset was the best interleukin-12 producer in response to infection. Infection did not induce in any DC subset production of the proinflammatory cytokine gamma interferon and nitric oxide associated with the induction of Th1 responses. The number of parasites phagocytosed by DCs was low, no more than 3 organisms per cell, compared to more than 10 organisms per macrophage. In infected DCs, the parasites are located in a parasitophorous vacuole containing both major histocompatibility complex (MHC) class II and lysosome-associated membrane protein 1 molecules, similar to their location in the infected macrophage. The parasite-driven redistribution of MHC class II to this compartment indicates that infected DCs should be able to present parasite antigen. FAU - Henri, Sandrine AU - Henri S AD - The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia. FAU - Curtis, Joan AU - Curtis J FAU - Hochrein, Hubertus AU - Hochrein H FAU - Vremec, David AU - Vremec D FAU - Shortman, Ken AU - Shortman K FAU - Handman, Emanuela AU - Handman E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (CD4 Antigens) RN - 0 (CD8 Antigens) RN - 187348-17-0 (Interleukin-12) RN - 31C4KY9ESH (Nitric Oxide) SB - IM MH - Animals MH - CD4 Antigens/*immunology MH - CD8 Antigens/*immunology MH - Cell Differentiation MH - Cell Lineage MH - Cells, Cultured MH - Dendritic Cells/cytology/*immunology/parasitology MH - Interleukin-12/*biosynthesis MH - Intracellular Fluid/parasitology MH - Leishmania major/*immunology MH - Macrophages, Peritoneal/immunology/parasitology MH - Mice MH - Mice, Inbred C57BL MH - Nitric Oxide/biosynthesis MH - Spleen/cytology PMC - PMC128092 EDAT- 2002/06/18 10:00 MHDA- 2002/07/31 10:01 PMCR- 2002/07/01 CRDT- 2002/06/18 10:00 PHST- 2002/06/18 10:00 [pubmed] PHST- 2002/07/31 10:01 [medline] PHST- 2002/06/18 10:00 [entrez] PHST- 2002/07/01 00:00 [pmc-release] AID - 1633 [pii] AID - 10.1128/IAI.70.7.3874-3880.2002 [doi] PST - ppublish SO - Infect Immun. 2002 Jul;70(7):3874-80. doi: 10.1128/IAI.70.7.3874-3880.2002.