PMID- 29420219 OWN - NLM STAT- MEDLINE DCOM- 20191210 LR - 20240314 IS - 2047-9980 (Electronic) IS - 2047-9980 (Linking) VI - 7 IP - 3 DP - 2018 Feb 2 TI - Neopterin Counters Vascular Inflammation and Atherosclerosis. LID - 10.1161/JAHA.117.007359 [doi] LID - e007359 AB - BACKGROUND: Neopterin, a metabolite of GTP, is produced by activated macrophages and is abundantly expressed within atherosclerotic lesions in human aorta and carotid and coronary arteries. We aimed to clarify the influence of neopterin on both vascular inflammation and atherosclerosis, as neither effect had been fully assessed. METHODS AND RESULTS: We investigated neopterin expression in coronary artery lesions and plasma from patients with coronary artery disease. We assessed the atheroprotective effects of neopterin in vitro using human aortic endothelial cells, human monocyte-derived macrophages, and human aortic smooth muscle cells. In vivo experiments included a study of aortic lesions in apolipoprotein E-deficient mice. Neopterin expression in coronary artery lesions and plasma was markedly increased in patients with versus without coronary artery disease. In human aortic endothelial cells, neopterin reduced proliferation and TNF-alpha (tumor necrosis factor alpha)-induced upregulation of MCP-1 (monocyte chemotactic protein 1), ICAM-1 (intercellular adhesion molecule 1), and VCAM-1 (vascular cell adhesion molecule 1). Neopterin attenuated TNF-alpha-induced monocyte adhesion to human aortic endothelial cells and the inflammatory macrophage phenotype via NF-kappaB (nuclear factor-kappaB) downregulation. Neopterin suppressed oxidized low-density lipoprotein-induced foam cell formation associated with CD36 downregulation and upregulation of ATP-binding cassette transporters A1 and G1 in human monocyte-derived macrophages. In human aortic smooth muscle cells, neopterin suppressed angiotensin II-induced migration and proliferation via c-Src/Raf-1/ERK1/2 downregulation without inducing apoptosis. Exogenous neopterin administration and endogenous neopterin attenuation with its neutralizing antibody for 4 weeks retarded and promoted, respectively, the development of aortic atherosclerotic lesions in apolipoprotein E-deficient mice. CONCLUSIONS: Our results indicate that neopterin prevents both vascular inflammation and atherosclerosis and may be induced to counteract the progression of atherosclerotic lesions. Consequently, neopterin could be of use as a novel therapeutic target for atherosclerotic cardiovascular diseases. CI - (c) 2018 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley. FAU - Shirai, Remina AU - Shirai R AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. FAU - Sato, Kengo AU - Sato K AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan ksato@toyaku.ac.jp. FAU - Yamashita, Tomoyuki AU - Yamashita T AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. FAU - Yamaguchi, Maho AU - Yamaguchi M AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. FAU - Okano, Taisuke AU - Okano T AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. FAU - Watanabe-Kominato, Kaho AU - Watanabe-Kominato K AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. FAU - Watanabe, Rena AU - Watanabe R AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. FAU - Matsuyama, Taka-Aki AU - Matsuyama TA AD - Department of Pathology, National Cerebral and Cardiovascular Center, Osaka, Japan. FAU - Ishibashi-Ueda, Hatsue AU - Ishibashi-Ueda H AD - Department of Pathology, National Cerebral and Cardiovascular Center, Osaka, Japan. FAU - Koba, Shinji AU - Koba S AD - Division of Cardiology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan. FAU - Kobayashi, Youichi AU - Kobayashi Y AD - Division of Cardiology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan. FAU - Hirano, Tsutomu AU - Hirano T AD - Division of Diabetes, Metabolism, and Endocrinology, Showa University School of Medicine, Tokyo, Japan. FAU - Watanabe, Takuya AU - Watanabe T AD - Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180202 PL - England TA - J Am Heart Assoc JT - Journal of the American Heart Association JID - 101580524 RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - 670-65-5 (Neopterin) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Animals MH - Aortic Diseases/*metabolism/pathology/prevention & control MH - Apoptosis/drug effects MH - Atherosclerosis/*metabolism/pathology/prevention & control MH - Cell Adhesion MH - Cell Movement MH - Cell Proliferation MH - Coculture Techniques MH - Coronary Artery Disease/*metabolism/pathology/prevention & control MH - Cytokines/metabolism MH - Disease Models, Animal MH - Endothelial Cells/*metabolism/pathology MH - Female MH - Foam Cells/metabolism/pathology MH - Humans MH - Inflammation Mediators/metabolism MH - Male MH - Mice, Inbred BALB C MH - Mice, Inbred C57BL MH - Mice, Knockout, ApoE MH - Middle Aged MH - Muscle, Smooth, Vascular/*metabolism/pathology MH - Myocytes, Smooth Muscle/*metabolism/pathology MH - Neopterin/*metabolism MH - Plaque, Atherosclerotic MH - Signal Transduction MH - THP-1 Cells MH - Vasculitis/*metabolism/pathology/prevention & control PMC - PMC5850243 OTO - NOTNLM OT - atherosclerosis OT - endothelial cell OT - inflammation OT - macrophage OT - neopterin OT - smooth muscle cell EDAT- 2018/02/09 06:00 MHDA- 2019/12/18 06:00 PMCR- 2018/02/01 CRDT- 2018/02/09 06:00 PHST- 2018/02/09 06:00 [entrez] PHST- 2018/02/09 06:00 [pubmed] PHST- 2019/12/18 06:00 [medline] PHST- 2018/02/01 00:00 [pmc-release] AID - JAHA.117.007359 [pii] AID - JAH32908 [pii] AID - 10.1161/JAHA.117.007359 [doi] PST - epublish SO - J Am Heart Assoc. 2018 Feb 2;7(3):e007359. doi: 10.1161/JAHA.117.007359.