PMID- 21832159 OWN - NLM STAT- MEDLINE DCOM- 20111109 LR - 20211020 IS - 1550-6606 (Electronic) IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 187 IP - 6 DP - 2011 Sep 15 TI - TRAIL/DR5 plays a critical role in NK cell-mediated negative regulation of dendritic cell cross-priming of T cells. PG - 3087-95 LID - 10.4049/jimmunol.1003879 [doi] AB - Dendritic cells (DCs) are critical in initiating immune responses by cross-priming of tumor Ags to T cells. Previous results showed that NK cells inhibited DC-mediated cross-presentation of tumor Ags both in vivo and in vitro. In this study, enhanced Ag presentation was observed in draining lymph nodes in TRAIL(-/-) and DR5(-/-) mice compared with that of wild-type mice. NK cells inhibit DC cross-priming of tumor Ags in vitro, but not direct presentation of endogenous Ags. NK cells lacking TRAIL, but not perforin, were not able to inhibit DC cross-priming of tumor Ags. DCs that lack expression of TRAIL receptor DR5 were less susceptible to NK cell-mediated inhibition of cross-priming, and cross-linking of DR5 receptor led to reduced generation of MHC class I-Ag peptide complexes, followed by attenuated cross-priming of CD8(+) T cells. In addition, key molecules involved in the TRAIL/DR5 pathway during DC/NK cell interactions were determined. In summary, these data indicate a novel alternative pathway for DC/NK cell interactions in antitumor immunity and may reflect homeostasis of both DCs and NK cells for regulation of CD8(+) T cell function in physiological conditions. FAU - Iyori, Mitsuhiro AU - Iyori M AD - Department of Microbiology and Immunology, Dartmouth Medical School, Lebanon, NH 03756, USA. FAU - Zhang, Tong AU - Zhang T FAU - Pantel, Haddon AU - Pantel H FAU - Gagne, Bethany A AU - Gagne BA FAU - Sentman, Charles L AU - Sentman CL LA - eng GR - CA101748/CA/NCI NIH HHS/United States GR - R01 CA101748-05/CA/NCI NIH HHS/United States GR - P30 CA023108/CA/NCI NIH HHS/United States GR - R01 CA130911/CA/NCI NIH HHS/United States GR - R01 CA101748/CA/NCI NIH HHS/United States GR - CA130911/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20110810 PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Receptors, TNF-Related Apoptosis-Inducing Ligand) RN - 0 (TNF-Related Apoptosis-Inducing Ligand) RN - 0 (Tnfsf10 protein, mouse) SB - IM MH - Animals MH - Antigen Presentation/immunology MH - Cell Separation MH - Cross-Priming/*immunology MH - Dendritic Cells/*immunology/metabolism MH - Flow Cytometry MH - Killer Cells, Natural/*immunology/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Receptors, TNF-Related Apoptosis-Inducing Ligand/*immunology MH - Reverse Transcriptase Polymerase Chain Reaction MH - T-Lymphocytes/*immunology/metabolism MH - TNF-Related Apoptosis-Inducing Ligand/*immunology PMC - PMC3169733 MID - NIHMS312001 COIS- Conflict of interest The authors declare no financial or commercial conflict of interest. EDAT- 2011/08/13 06:00 MHDA- 2011/11/10 06:00 PMCR- 2012/09/15 CRDT- 2011/08/12 06:00 PHST- 2011/08/12 06:00 [entrez] PHST- 2011/08/13 06:00 [pubmed] PHST- 2011/11/10 06:00 [medline] PHST- 2012/09/15 00:00 [pmc-release] AID - jimmunol.1003879 [pii] AID - 10.4049/jimmunol.1003879 [doi] PST - ppublish SO - J Immunol. 2011 Sep 15;187(6):3087-95. doi: 10.4049/jimmunol.1003879. Epub 2011 Aug 10.