PMID- 25992864 OWN - NLM STAT- MEDLINE DCOM- 20150730 LR - 20181113 IS - 1097-4180 (Electronic) IS - 1074-7613 (Print) IS - 1074-7613 (Linking) VI - 42 IP - 5 DP - 2015 May 19 TI - Epidermal Fatty Acid binding protein promotes skin inflammation induced by high-fat diet. PG - 953-964 LID - 10.1016/j.immuni.2015.04.016 [doi] AB - Defining specific cellular and molecular mechanisms in most obesity-related diseases remains an important challenge. Here we report a serendipitous finding that consumption of a high-fat diet (HFD) greatly increased the occurrence of skin lesions in C57BL/6 mice. We demonstrated that HFD induced the accumulation of a specific type of CD11c(+) macrophages in skin preceding detectable lesions. These cells primed skin to induce IL-1beta and IL-18 signaling, which further promoted the cytokines IFN-gamma- and IL-17-mediated skin inflammation. Mechanistically, epidermal fatty acid binding protein (E-FABP) was significantly upregulated in skin of obese mice, which coupled lipid droplet formation and NLRP3 inflammasome activation. Deficiency of E-FABP in obese mice decreased recruitment of CD11c(+) macrophages in skin tissues, reduced production of IL-1beta and IL-18, and consequently dampened activation of effector T cells. Furthermore, E-FABP-deficient mice are completely resistant to HFD-induced skin lesions. Collectively, E-FABP represents a molecular sensor triggering HFD-induced skin inflammation. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Zhang, Yuwen AU - Zhang Y AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. FAU - Li, Qiang AU - Li Q AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. AD - Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, China. FAU - Rao, Enyu AU - Rao E AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. FAU - Sun, Yanwen AU - Sun Y AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. AD - Mayo Clinic Health System, Austin, MN, 55912, USA. FAU - Grossmann, Michael E AU - Grossmann ME AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. FAU - Morris, Rebecca J AU - Morris RJ AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. FAU - Cleary, Margot P AU - Cleary MP AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. FAU - Li, Bing AU - Li B AD - The Hormel Institute, University of Minnesota, Austin, MN 55912, USA. LA - eng GR - UL1TR000135/TR/NCATS NIH HHS/United States GR - CA18098601A1/CA/NCI NIH HHS/United States GR - CA157012/CA/NCI NIH HHS/United States GR - P30 DK050456/DK/NIDDK NIH HHS/United States GR - 5P30DK50456/DK/NIDDK NIH HHS/United States GR - U24 DK100469/DK/NIDDK NIH HHS/United States GR - R01 CA157012/CA/NCI NIH HHS/United States GR - R01 CA177679/CA/NCI NIH HHS/United States GR - UL1 TR000135/TR/NCATS NIH HHS/United States GR - CA17767901A1/CA/NCI NIH HHS/United States GR - U24DK100469/DK/NIDDK NIH HHS/United States GR - R01 CA180986/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Immunity JT - Immunity JID - 9432918 RN - 0 (Cytokines) RN - 0 (Fabp5 protein, mouse) RN - 0 (Fatty Acid-Binding Proteins) RN - 0 (Neoplasm Proteins) SB - IM MH - Animals MH - Cytokines/metabolism MH - Diet, High-Fat/*adverse effects MH - Fatty Acid-Binding Proteins/deficiency/genetics/immunology/*metabolism MH - Immunohistochemistry MH - Inflammation/*etiology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Neoplasm Proteins/deficiency/genetics/immunology/*metabolism MH - Skin Diseases/genetics/*immunology MH - T-Lymphocytes/immunology PMC - PMC4440244 MID - NIHMS687054 EDAT- 2015/05/21 06:00 MHDA- 2015/08/01 06:00 PMCR- 2016/05/19 CRDT- 2015/05/21 06:00 PHST- 2014/06/11 00:00 [received] PHST- 2015/01/12 00:00 [revised] PHST- 2015/03/15 00:00 [accepted] PHST- 2015/05/21 06:00 [entrez] PHST- 2015/05/21 06:00 [pubmed] PHST- 2015/08/01 06:00 [medline] PHST- 2016/05/19 00:00 [pmc-release] AID - 10.1016/j.immuni.2015.04.016 [doi] PST - ppublish SO - Immunity. 2015 May 19;42(5):953-964. doi: 10.1016/j.immuni.2015.04.016.