PMID- 24852948 OWN - NLM STAT- MEDLINE DCOM- 20150414 LR - 20190212 IS - 1421-9778 (Electronic) IS - 1015-8987 (Linking) VI - 33 IP - 5 DP - 2014 TI - Green tea polyphenol epigallocatechin-3-gallate inhibits TNF-alpha-induced production of monocyte chemoattractant protein-1 in human umbilical vein endothelial cells. PG - 1349-58 LID - 10.1159/000358702 [doi] AB - AIMS: Epigallocatechin-3-gallate (EGCG), a major catechin found in green tea, displays a variety of pharmacological properties and recently received attention as a prospective dietary intervention in cardiovascular diseases (CVD). This study was conducted to test the hypothesis that EGCG was able to inhibit tumor necrosis factor-alpha (TNF-alpha)-induced production of monocyte chemoattractant protein-1 (MCP-1) in human umbilical vein endothelial cells (HUVECs) and investigated the underlying molecular mechanisms. METHODS: The inhibitory effect of EGCG on TNF-alpha-induced expression of MCP-1 was measured using ELISA and RT-qPCR. The effect of EGCG on TNF-alpha-induced nuclear factor-kappa B (NF-kappaB) activation was investigated by western blot and luciferase assays. Monocyte adhesion assay was detected by microscope. RESULTS: EGCG significantly suppressed the TNF-alpha-induced protein and mRNA expression of MCP-1. Investigation of the mechanism suggested that EGCG suppressed the TNF-alpha-mediated NF-kappaB activation. In addition, the 67-kD laminin receptor (67LR) was involved in EGCG-mediated suppression of MCP-1 generation. Furthermore, EGCG potently inhibited monocyte adhesion to activated HUVECs. CONCLUSION: EGCG suppresses TNF-alpha-induced MCP-1 expression in HUVECs. This effect was mediated by 67LR and was via the inhibition of NF-kappaB activation. Our results demonstrated that EGCG might be a possible medicine for CVD prevention and treatment. CI - (c) 2014 S. Karger AG, Basel. FAU - Wang, Ze-Mu AU - Wang ZM AD - Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China. FAU - Gao, Wei AU - Gao W FAU - Wang, Hao AU - Wang H FAU - Zhao, Di AU - Zhao D FAU - Nie, Zhen-Lin AU - Nie ZL FAU - Shi, Jian-Quan AU - Shi JQ FAU - Zhao, Shan AU - Zhao S FAU - Lu, Xiang AU - Lu X FAU - Wang, Lian-Sheng AU - Wang LS FAU - Yang, Zhi-Jian AU - Yang ZJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140505 PL - Germany TA - Cell Physiol Biochem JT - Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology JID - 9113221 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (RNA, Messenger) RN - 0 (Tea) RN - 0 (Tumor Necrosis Factor-alpha) RN - 8R1V1STN48 (Catechin) RN - BQM438CTEL (epigallocatechin gallate) SB - IM MH - Catechin/*analogs & derivatives/pharmacology MH - Cell Survival/drug effects MH - Cells, Cultured MH - Chemokine CCL2/*biosynthesis/genetics MH - Dose-Response Relationship, Drug MH - Human Umbilical Vein Endothelial Cells/*drug effects/*metabolism MH - Humans MH - RNA, Messenger/biosynthesis/genetics MH - Structure-Activity Relationship MH - Tea/*chemistry MH - Tumor Necrosis Factor-alpha/*antagonists & inhibitors/pharmacology EDAT- 2014/05/24 06:00 MHDA- 2015/04/15 06:00 CRDT- 2014/05/24 06:00 PHST- 2014/03/11 00:00 [accepted] PHST- 2014/05/24 06:00 [entrez] PHST- 2014/05/24 06:00 [pubmed] PHST- 2015/04/15 06:00 [medline] AID - 000358702 [pii] AID - 10.1159/000358702 [doi] PST - ppublish SO - Cell Physiol Biochem. 2014;33(5):1349-58. doi: 10.1159/000358702. Epub 2014 May 5.