PMID- 30476082 OWN - NLM STAT- MEDLINE DCOM- 20190613 LR - 20190613 IS - 1460-2423 (Electronic) IS - 0959-6658 (Linking) VI - 29 IP - 3 DP - 2019 Mar 1 TI - Globo-series glycosphingolipids enhance Toll-like receptor 4-mediated inflammation and play a pathophysiological role in diabetic nephropathy. PG - 260-268 LID - 10.1093/glycob/cwy105 [doi] AB - Alteration of glycosphingolipid (GSL) expression plays key roles in the pathogenesis and pathophysiology of many important human diseases, including cancer, diabetes and glycosphingolipidosis. Inflammatory processes are involved in development and progression of diabetic nephropathy, a major complication of type 2 diabetes mellitus. GSLs are known to play roles in inflammatory responses in various diseases, and levels of renal GSLs are elevated in mouse models of diabetic nephropathy; however, little is known regarding the pathophysiological role of these GSLs in this disease process. We studied proinflammatory activity of GSLs in diabetic nephropathy using spontaneously diabetic mouse strain KK. Mice were fed a high-fat diet (HFD) (60% kcal from fat) or normal diet (ND) (4.6% kcal from fat) for a period of 8 wk. HFD-feeding resulted in quantitative and qualitative changes of renal globo-series GSLs (particularly Gb3Cer), upregulation of TNF-alpha, and induction of renal inflammation. Gb3Cer/Gb4Cer treatment enhanced inflammatory responses via TLR4 in TLR4/MD-2 complex expressing cells, including HEK293T, mouse bone marrow-derived macrophages (BMDMs) and human monocytes. Our findings suggest that HFD-induced increase of Gb3Cer/Gb4Cer positively modulate TLR4-mediated inflammatory response, and that such GSLs play an important pathophysiological role in diabetic nephropathy. CI - (c) The Author(s) 2018. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Nitta, Takahiro AU - Nitta T AD - Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan. AD - Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan. FAU - Kanoh, Hirotaka AU - Kanoh H AD - Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan. FAU - Inamori, Kei-Ichiro AU - Inamori KI AD - Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan. FAU - Suzuki, Akemi AU - Suzuki A AD - Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan. FAU - Takahashi, Tomoko AU - Takahashi T AD - Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan. FAU - Inokuchi, Jin-Ichi AU - Inokuchi JI AD - Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Glycobiology JT - Glycobiology JID - 9104124 RN - 0 (Glycosphingolipids) RN - 0 (TLR4 protein, human) RN - 0 (Toll-Like Receptor 4) RN - 0 (Trihexosylceramides) RN - 0 (Tumor Necrosis Factor-alpha) RN - 71965-57-6 (globotriaosylceramide) SB - IM MH - Animals MH - Diabetes Mellitus, Type 2/complications/genetics MH - Diabetic Nephropathies/*genetics/metabolism/pathology MH - Diet, High-Fat MH - Disease Models, Animal MH - Disease Progression MH - Glycosphingolipids/*genetics/metabolism MH - HEK293 Cells MH - Humans MH - Inflammation/*genetics/metabolism/pathology MH - Kidney/metabolism/pathology MH - Macrophages/metabolism/pathology MH - Male MH - Mice MH - Signal Transduction/genetics MH - Toll-Like Receptor 4/*genetics/metabolism MH - Trihexosylceramides/*genetics MH - Tumor Necrosis Factor-alpha/genetics OTO - NOTNLM OT - Globo-series GSLs OT - TLR4 ligands OT - Toll-like receptor 4 OT - diabetic nephropathy OT - renal inflammation EDAT- 2018/11/27 06:00 MHDA- 2019/06/14 06:00 CRDT- 2018/11/27 06:00 PHST- 2018/10/04 00:00 [received] PHST- 2018/11/14 00:00 [revised] PHST- 2018/11/21 00:00 [accepted] PHST- 2018/11/27 06:00 [pubmed] PHST- 2019/06/14 06:00 [medline] PHST- 2018/11/27 06:00 [entrez] AID - 5199375 [pii] AID - 10.1093/glycob/cwy105 [doi] PST - ppublish SO - Glycobiology. 2019 Mar 1;29(3):260-268. doi: 10.1093/glycob/cwy105.