PMID- 26907999 OWN - NLM STAT- MEDLINE DCOM- 20161222 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Feb 24 TI - Lipid peroxidation causes endosomal antigen release for cross-presentation. PG - 22064 LID - 10.1038/srep22064 [doi] LID - 22064 AB - Dendritic cells (DCs) present foreign antigen in major histocompatibility complex (MHC) class I molecules to cytotoxic T cells in a process called cross-presentation. An important step in this process is the release of antigen from the lumen of endosomes into the cytosol, but the mechanism of this step is still unclear. In this study, we show that reactive oxygen species (ROS) produced by the NADPH-oxidase complex NOX2 cause lipid peroxidation, a membrane disrupting chain-reaction, which in turn results in antigen leakage from endosomes. Antigen leakage and cross-presentation were inhibited by blocking ROS production or scavenging radicals and induced when using a ROS-generating photosensitizer. Endosomal antigen release was impaired in DCs from chronic granulomatous disease (CGD) patients with dysfunctional NOX2. Thus, NOX2 induces antigen release from endosomes for cross-presentation by direct oxidation of endosomal lipids. This constitutes a new cellular function for ROS in regulating immune responses against pathogens and cancer. FAU - Dingjan, Ilse AU - Dingjan I AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Verboogen, Danielle Rj AU - Verboogen DR AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Paardekooper, Laurent M AU - Paardekooper LM AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Revelo, Natalia H AU - Revelo NH AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Sittig, Simone P AU - Sittig SP AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Visser, Linda J AU - Visser LJ AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Mollard, Gabriele Fischer von AU - Mollard GF AD - Department of Chemistry, Bielefeld University, Bielefeld, 33501, Germany. FAU - Henriet, Stefanie Sv AU - Henriet SS AD - Department of Pediatrics, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Figdor, Carl G AU - Figdor CG AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - Ter Beest, Martin AU - Ter Beest M AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. FAU - van den Bogaart, Geert AU - van den Bogaart G AD - Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, the Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160224 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Free Radical Scavengers) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Membrane Glycoproteins) RN - 0 (Photosensitizing Agents) RN - 0 (Reactive Oxygen Species) RN - EC 1.6.3.- (CYBB protein, human) RN - EC 1.6.3.- (NADPH Oxidase 2) RN - EC 1.6.3.- (NADPH Oxidases) RN - H4N855PNZ1 (alpha-Tocopherol) SB - IM MH - Animals MH - Antigen Presentation MH - *Cross-Priming MH - Dendritic Cells/cytology/drug effects/*immunology MH - Endosomes/immunology/metabolism MH - Free Radical Scavengers/pharmacology MH - Gene Expression MH - Granulomatous Disease, Chronic/*immunology/metabolism/pathology MH - Histocompatibility Antigens Class I/genetics/immunology MH - Humans MH - Jurkat Cells MH - Lipid Peroxidation/drug effects/*immunology MH - Membrane Glycoproteins/genetics/*immunology MH - Mice MH - Mice, Inbred C57BL MH - NADPH Oxidase 2 MH - NADPH Oxidases/genetics/*immunology MH - Photosensitizing Agents/pharmacology MH - Primary Cell Culture MH - Reactive Oxygen Species/antagonists & inhibitors/immunology/metabolism MH - T-Lymphocytes, Cytotoxic/cytology/drug effects/*immunology MH - alpha-Tocopherol/pharmacology PMC - PMC4764948 EDAT- 2016/02/26 06:00 MHDA- 2016/12/23 06:00 PMCR- 2016/02/24 CRDT- 2016/02/25 06:00 PHST- 2015/07/09 00:00 [received] PHST- 2016/02/05 00:00 [accepted] PHST- 2016/02/25 06:00 [entrez] PHST- 2016/02/26 06:00 [pubmed] PHST- 2016/12/23 06:00 [medline] PHST- 2016/02/24 00:00 [pmc-release] AID - srep22064 [pii] AID - 10.1038/srep22064 [doi] PST - epublish SO - Sci Rep. 2016 Feb 24;6:22064. doi: 10.1038/srep22064.