PMID- 25108022 OWN - NLM STAT- MEDLINE DCOM- 20141125 LR - 20211203 IS - 1550-6606 (Electronic) IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 193 IP - 6 DP - 2014 Sep 15 TI - Mechanistic target of rapamycin inhibition extends cellular lifespan in dendritic cells by preserving mitochondrial function. PG - 2821-30 LID - 10.4049/jimmunol.1302498 [doi] AB - TLR-mediated activation of dendritic cells (DCs) is associated with a metabolic transition in which mitochondrial oxidative phosphorylation is inhibited by endogenously synthesized NO and the cells become committed to glucose and aerobic glycolysis for survival. We show that inhibition of mechanistic target of rapamycin (mTOR) extends the lifespan of TLR-activated DCs by inhibiting the induction of NO production, thereby allowing the cells to continue to use their mitochondria to generate ATP, and allowing them the flexibility to use fatty acids or glucose as nutrients to fuel core metabolism. These data provide novel mechanistic insights into how mTOR modulates DC metabolism and cellular longevity following TLR activation and provide an explanation for previous findings that mTOR inhibition enhances the efficacy of DCs in autologous vaccination. CI - Copyright (c) 2014 by The American Association of Immunologists, Inc. FAU - Amiel, Eyal AU - Amiel E AD - Department of Medical Laboratory and Radiation Sciences, College of Nursing and Health Sciences, University of Vermont, Burlington, VT 05405; Trudeau Institute, Saranac Lake, NY 12983; and. FAU - Everts, Bart AU - Everts B AD - Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110. FAU - Fritz, Daniel AU - Fritz D AD - Department of Medical Laboratory and Radiation Sciences, College of Nursing and Health Sciences, University of Vermont, Burlington, VT 05405; FAU - Beauchamp, Saritha AU - Beauchamp S AD - Department of Medical Laboratory and Radiation Sciences, College of Nursing and Health Sciences, University of Vermont, Burlington, VT 05405; FAU - Ge, Burong AU - Ge B AD - Department of Medical Laboratory and Radiation Sciences, College of Nursing and Health Sciences, University of Vermont, Burlington, VT 05405; FAU - Pearce, Erika L AU - Pearce EL AD - Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110. FAU - Pearce, Edward J AU - Pearce EJ AD - Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110 edwardpearce@path.wustl.edu. LA - eng GR - CA155823/CA/NCI NIH HHS/United States GR - AI049823/AI/NIAID NIH HHS/United States GR - AI 091965/AI/NIAID NIH HHS/United States GR - R01 CA164062/CA/NCI NIH HHS/United States GR - R21 CA155823/CA/NCI NIH HHS/United States GR - T32 AI049823/AI/NIAID NIH HHS/United States GR - R01 AI091965/AI/NIAID NIH HHS/United States GR - AI053825/AI/NIAID NIH HHS/United States GR - R21 CA158823/CA/NCI NIH HHS/United States GR - P20 GM103496/GM/NIGMS NIH HHS/United States GR - R01 AI053825/AI/NIAID NIH HHS/United States GR - CA164062/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 - 20140808 PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Fatty Acids) RN - 0 (Lipopolysaccharides) RN - 0 (Toll-Like Receptors) RN - 31C4KY9ESH (Nitric Oxide) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) RN - EC 1.14.13.39 (Nos2 protein, mouse) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Adenosine Triphosphate/biosynthesis MH - Animals MH - Cells, Cultured MH - Cellular Senescence/immunology MH - Dendritic Cells/immunology/*metabolism MH - Fatty Acids/metabolism MH - Glucose/metabolism MH - Glycolysis MH - Lipopolysaccharides MH - Mice MH - Mice, Inbred C57BL MH - Mitochondria/*metabolism MH - Nitric Oxide/metabolism MH - Nitric Oxide Synthase Type II/biosynthesis/genetics/*metabolism MH - Oxidative Phosphorylation MH - Protein Biosynthesis MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors MH - Toll-Like Receptors/*immunology MH - Transcription, Genetic MH - Vaccination PMC - PMC4302759 MID - NIHMS654149 EDAT- 2014/08/12 06:00 MHDA- 2014/12/15 06:00 PMCR- 2015/03/15 CRDT- 2014/08/10 06:00 PHST- 2014/08/10 06:00 [entrez] PHST- 2014/08/12 06:00 [pubmed] PHST- 2014/12/15 06:00 [medline] PHST- 2015/03/15 00:00 [pmc-release] AID - jimmunol.1302498 [pii] AID - 10.4049/jimmunol.1302498 [doi] PST - ppublish SO - J Immunol. 2014 Sep 15;193(6):2821-30. doi: 10.4049/jimmunol.1302498. Epub 2014 Aug 8.