PMID- 31401381 OWN - NLM STAT- MEDLINE DCOM- 20200213 LR - 20200213 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 75 DP - 2019 Oct TI - Sitagliptin inhibits vascular inflammation via the SIRT6-dependent signaling pathway. PG - 105805 LID - S1567-5769(19)30110-9 [pii] LID - 10.1016/j.intimp.2019.105805 [doi] AB - Sitagliptin has recently been shown to inhibit inflammatory response in cardiovascular disease. Sirtuin6 (SIRT6), a NAD(+)-dependent class III histone deacetylase, participates in the regulation of cellular inflammation. We hypothesized that sitagliptin could attenuate vascular inflammation via modulation of SIRT6 pathway. It was found that sitagliptin decreased the expression of monocyte chemotactic protein-1 (MCP-1), interleukin (IL)-6 and IL-1beta, but up-regulated SIRT6 expression, both in mice and in TNF-alpha-stimulated endothelial cells. Moreover, knockdown of SIRT6 reversed the inhibitory effect of sitagliptin on MCP-1, IL-6 and IL-1beta expression. Further study revealed that sitagliptin also decreased the expression of MCP-1, IL-6 and IL-1beta partly through suppression of reactive oxygen species (ROS). In vivo, hypercholesterolemia in mice was induced by intraperitoneal administration of poloxamer 407 for 1 month. Hyperlipidemia-induced production of MCP-1, IL-6 and IL-1beta was significantly suppressed in the sitagliptin-supplemented animals, but the effect of was abolished by SIRT6 knockout in endothelium. These results indicate that sitagliptin protects against vascular inflammation via the SIRT6/ROS-dependent signaling pathway. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - He, Yanhao AU - He Y AD - Department of Pharmacology, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Yang, Guangde AU - Yang G AD - School of Pharmacy, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Yao, Feng AU - Yao F AD - School of Pharmacy, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Xian, Yushan AU - Xian Y AD - Department of Pharmacology, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Wang, Guan AU - Wang G AD - School of Pharmacy, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Chen, Lifang AU - Chen L AD - Laboratory Animal Center, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Lv, Xiaohan AU - Lv X AD - Department of Pharmacology, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Gao, Hongqian AU - Gao H AD - Department of Pharmacology, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Zheng, Zihan AU - Zheng Z AD - Department of Pharmacology, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Sun, Lijing AU - Sun L AD - Department of Pharmacy, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China. FAU - Wang, Weirong AU - Wang W AD - Laboratory Animal Center, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. FAU - Lin, Rong AU - Lin R AD - Department of Pharmacology, Xi'an Jiaotong University, Health Science Center, Xi'an, Shaanxi 710061, China. Electronic address: linrong63@aliyun.com. LA - eng PT - Journal Article DEP - 20190808 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Cytokines) RN - 0 (Reactive Oxygen Species) RN - EC 2.4.2.31 (Sirt6 protein, mouse) RN - EC 3.5.1.- (Sirtuins) RN - TS63EW8X6F (Sitagliptin Phosphate) SB - IM MH - Animals MH - Anti-Inflammatory Agents/*pharmacology MH - Aorta/drug effects/metabolism MH - Cell Line MH - Cytokines/genetics/metabolism MH - Endothelial Cells/drug effects/metabolism MH - Endothelium, Vascular/*drug effects/metabolism MH - Humans MH - Hypercholesterolemia/chemically induced/metabolism MH - Mice, Transgenic MH - Reactive Oxygen Species/metabolism MH - Signal Transduction/drug effects MH - Sirtuins/*genetics MH - Sitagliptin Phosphate/*pharmacology OTO - NOTNLM OT - Inflammation OT - ROS OT - SIRT6 OT - Sitagliptin EDAT- 2019/08/12 06:00 MHDA- 2020/02/14 06:00 CRDT- 2019/08/12 06:00 PHST- 2019/01/20 00:00 [received] PHST- 2019/08/01 00:00 [revised] PHST- 2019/08/01 00:00 [accepted] PHST- 2019/08/12 06:00 [pubmed] PHST- 2020/02/14 06:00 [medline] PHST- 2019/08/12 06:00 [entrez] AID - S1567-5769(19)30110-9 [pii] AID - 10.1016/j.intimp.2019.105805 [doi] PST - ppublish SO - Int Immunopharmacol. 2019 Oct;75:105805. doi: 10.1016/j.intimp.2019.105805. Epub 2019 Aug 8.