PMID- 25923834 OWN - NLM STAT- MEDLINE DCOM- 20160224 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 5 DP - 2015 Apr 29 TI - Radiation-driven lipid accumulation and dendritic cell dysfunction in cancer. PG - 9613 LID - 10.1038/srep09613 [doi] LID - 9613 AB - Dendritic cells (DCs) play important roles in the initiation and maintenance of the immune response. The dysfunction of DCs contributes to tumor evasion and growth. Here we report our findings on the dysfunction of DCs in radiation-induced thymic lymphomas, and the up-regulation of the expression of the lipoprotein lipase (LPL) and the fatty acid binding protein (FABP4), and the level of triacylglycerol (TAG) in serum after total body irradiation, which contribute to DCs lipid accumulation. DCs with high lipid content showed low expression of co-stimulatory molecules and DCs-related cytokines, and were not able to effectively stimulate allogeneic T cells. Normalization of lipid abundance in DCs with an inhibitor of acetyl-CoA carboxylase restored the function of DCs. A high-fat diet promoted radiation-induced thymic lymphoma growth. In all, our study shows that dysfunction of DCs in radiation-induced thymic lymphomas was due to lipid accumulation and may represent a new mechanism in radiation-induced carcinogenesis. FAU - Gao, Fu AU - Gao F AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Liu, Cong AU - Liu C AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Guo, Jiaming AU - Guo J AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Sun, Weimin AU - Sun W AD - National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai 200433, China. FAU - Xian, Linfeng AU - Xian L AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Bai, Dongchen AU - Bai D AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Liu, Hu AU - Liu H AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Cheng, Ying AU - Cheng Y AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Li, Bailong AU - Li B AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Cui, Jianguo AU - Cui J AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. FAU - Zhang, Chaoxiong AU - Zhang C AD - Department of Centre for Disease Prevention and Control, Chengdu Military Region, Chengdu610021, China. FAU - Cai, Jianming AU - Cai J AD - Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University, Shanghai 200433, PR China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150429 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Cytokines) RN - 0 (Fatty Acid-Binding Proteins) RN - 0 (Triglycerides) RN - EC 3.1.1.34 (Lipoprotein Lipase) RN - EC 6.4.1.2 (Acetyl-CoA Carboxylase) SB - IM MH - Acetyl-CoA Carboxylase/metabolism MH - Animals MH - Carcinogenesis/radiation effects MH - Cytokines/metabolism MH - Dendritic Cells/metabolism/pathology/*radiation effects MH - Diet, High-Fat/adverse effects MH - Fatty Acid-Binding Proteins/metabolism MH - Gamma Rays/*adverse effects MH - Lipid Metabolism/*radiation effects MH - Lipoprotein Lipase/metabolism MH - Lymphoma/blood/metabolism/*pathology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - T-Lymphocytes/metabolism/pathology/radiation effects MH - Thymus Neoplasms/blood/metabolism/*pathology MH - Triglycerides/blood MH - Up-Regulation/radiation effects PMC - PMC4413852 EDAT- 2015/04/30 06:00 MHDA- 2016/02/26 06:00 PMCR- 2015/04/29 CRDT- 2015/04/30 06:00 PHST- 2014/10/23 00:00 [received] PHST- 2015/03/09 00:00 [accepted] PHST- 2015/04/30 06:00 [entrez] PHST- 2015/04/30 06:00 [pubmed] PHST- 2016/02/26 06:00 [medline] PHST- 2015/04/29 00:00 [pmc-release] AID - srep09613 [pii] AID - 10.1038/srep09613 [doi] PST - epublish SO - Sci Rep. 2015 Apr 29;5:9613. doi: 10.1038/srep09613.