PMID- 26767865 OWN - NLM STAT- MEDLINE DCOM- 20170117 LR - 20181113 IS - 2005-6648 (Electronic) IS - 1226-3303 (Print) IS - 1226-3303 (Linking) VI - 31 IP - 1 DP - 2016 Jan TI - Angiotensin III increases monocyte chemoattractant protein-1 expression in cultured human proximal tubular epithelial cells. PG - 116-24 LID - 10.3904/kjim.2016.31.1.116 [doi] AB - BACKGROUND/AIMS: We investigated whether angiotensin III (Ang III) is involved in monocyte recruitment through regulation of the chemokine monocyte chemoattractant protein-1 (MCP-1) in cultured human proximal tubular epithelial cells (HK-2 cells). METHODS: We measured MCP-1 levels in HK-2 cells that had been treated with various concentrations of Ang III and Ang II type-1 (AT1) receptor antagonists at various time points. The phosphorylation states of p38, c-Jun N-terminal kinases (JNK), and extracellular-signal-regulated kinases were measured in Ang III-treated cells to explore the mitogen-activated protein kinase (MAPK) pathway. MCP-1 levels in HK-2 cell-conditioned media were measured after pre-treatment with the transcription factor inhibitors curcumin or pyrrolidine dithiocarbamate. RESULTS: Ang III increased MCP-1 protein production in dose- and time-dependent manners in HK-2 cells, which was inhibited by the AT1 receptor blocker losartan. p38 MAPK activity increased significantly in HK-2 cells exposed to Ang III for 30 minutes, and was sustained at higher levels after 60 minutes (p < 0.05). Total phosphorylated JNK protein levels tended to increase 20 minutes after stimulation with Ang III. Pre-treatment with a p38 inhibitor, a JNK inhibitor, or curcumin significantly inhibited Ang III-induced MCP-1 production. CONCLUSIONS: Ang III increases MCP-1 synthesis via stimulation of intracellular p38 and JNK MAPK signaling activity and subsequent activated protein-1 transcriptional activity in HK-2 cells. FAU - Kim, Hyung Wook AU - Kim HW AD - Division of Nephrology, Department of Internal Medicine, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea. FAU - Kim, Young Ok AU - Kim YO AD - Division of Nephrology, Department of Internal Medicine, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea. FAU - Yoon, Sun Ae AU - Yoon SA AD - Division of Nephrology, Department of Internal Medicine, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea. FAU - Han, Jeong-Sun AU - Han JS AD - Renal Research Laboratory, Division of Nephrology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea. FAU - Chun, Hyun-Bae AU - Chun HB AD - Department of Medicine, Stony Brook University of New York, Stony Brook, NY, USA. FAU - Kim, Young Soo AU - Kim YS AD - Division of Nephrology, Department of Internal Medicine, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea. LA - eng PT - Journal Article DEP - 20151228 PL - Korea (South) TA - Korean J Intern Med JT - The Korean journal of internal medicine JID - 8712418 RN - 0 (Angiotensin II Type 1 Receptor Blockers) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Transcription Factor AP-1) RN - 12687-51-3 (Angiotensin III) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - Angiotensin II Type 1 Receptor Blockers/pharmacology MH - Angiotensin III/*pharmacology MH - Cell Line MH - Chemokine CCL2/*metabolism MH - Dose-Response Relationship, Drug MH - Epithelial Cells/*drug effects/metabolism MH - Humans MH - JNK Mitogen-Activated Protein Kinases/antagonists & inhibitors/metabolism MH - Kidney Tubules, Proximal/*drug effects/metabolism MH - Phosphorylation MH - Protein Kinase Inhibitors/pharmacology MH - Signal Transduction/drug effects MH - Time Factors MH - Transcription Factor AP-1/metabolism MH - Up-Regulation MH - p38 Mitogen-Activated Protein Kinases/antagonists & inhibitors/metabolism PMC - PMC4712415 OTO - NOTNLM OT - Angiotensin III OT - Chemokine CCL2 OT - Kidney tubules OT - Mitogen-activated protein kinases OT - Transcription factors COIS- No potential conflict of interest relevant to this article was reported. EDAT- 2016/01/16 06:00 MHDA- 2017/01/18 06:00 PMCR- 2016/01/01 CRDT- 2016/01/16 06:00 PHST- 2014/07/02 00:00 [received] PHST- 2014/08/26 00:00 [revised] PHST- 2014/08/26 00:00 [accepted] PHST- 2016/01/16 06:00 [entrez] PHST- 2016/01/16 06:00 [pubmed] PHST- 2017/01/18 06:00 [medline] PHST- 2016/01/01 00:00 [pmc-release] AID - kjim-31-1-116 [pii] AID - 10.3904/kjim.2016.31.1.116 [doi] PST - ppublish SO - Korean J Intern Med. 2016 Jan;31(1):116-24. doi: 10.3904/kjim.2016.31.1.116. Epub 2015 Dec 28.