PMID- 27153994 OWN - NLM STAT- MEDLINE DCOM- 20170413 LR - 20220819 IS - 1420-908X (Electronic) IS - 1023-3830 (Linking) VI - 65 IP - 8 DP - 2016 Aug TI - High glucose induced-macrophage activation through TGF-beta-activated kinase 1 signaling pathway. PG - 655-64 LID - 10.1007/s00011-016-0948-8 [doi] AB - OBJECTIVE AND DESIGN: Transforming growth factor-beta-activated kinase 1 (TAK1) plays a pivotal role in innate immune responses and kidney disease, and is critically involved in macrophage activation. However, there is a paucity of data to explore the role of high glucose (HG) in the regulation of TAK1 signaling and its functional role in macrophage activation. We assume that TAK1 signaling in hyperglycemic condition could be a key factor leading to macrophage activation and inflammation response. METHODS: Mice macrophages were seeded on a 96-well cell culture plate; cell viability was tested after treatment with different concentration of TAK1 inhibitors. Cells were divided into groups (OZ300; MC; NC; HG; HG + OZ30, 100, 300 nM) and treated for given time course. Monocyte chemotactic protein1(MCP-1) and tumor necrosis factor-alpha (TNF-alpha) mRNA levels were evaluated by qRT-PCR. Flow cytometry and confocal microscopy are used to analyse the activated macrophage induced by HG. Expression levels of p-TAK1, TAB 1, p-JNK, p-p38MAPK, NF-kappaBpp65 were detected by western blot. Nuclear translocation of NF-kappaBp65 was assessed by confocal microscopy. RESULTS: Our data revealed that high glucose not only significantly increased macrophage activation and subsequently abnormal high-expression of MCP-1 and TNF-alpha, but likewise remarkably enhanced TAK1 activation, MAPK phosphorylation, NF-kappaB expression in macrophages. Furthermore, pharmacological inhibition of TAK1 attenuated high glucose-triggered signal pathways, macrophage activation and inflammatory cytokines in a simulated diabetic environment. CONCLUSION: Our findings suggested that high glucose activated macrophages mainly in TAK1/MAPKs and TAK1/NF-kappaB-dependent manners, which lead to the polarization of macrophages towards a pro-inflammatory phenotype, and finally lead to diabetic nephropathy. In sum, the study raises novel data about the molecular mechanisms involved in the high glucose-mediated inflammatory response in macrophages. FAU - Xu, Xingxin AU - Xu X AD - Department of Nephrology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China. FAU - Qi, Xiangming AU - Qi X AD - Department of Nephrology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China. FAU - Shao, Yunxia AU - Shao Y AD - Department of Nephrology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China. FAU - Li, Yuanyuan AU - Li Y AD - Department of Nephrology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China. FAU - Fu, Xin AU - Fu X AD - Department of Nephrology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China. FAU - Feng, Shiyao AU - Feng S AD - Department of Nephrology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China. FAU - Wu, Yonggui AU - Wu Y AD - Department of Nephrology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China. wuyonggui@medmail.com.cn. LA - eng PT - Journal Article DEP - 20160506 PL - Switzerland TA - Inflamm Res JT - Inflammation research : official journal of the European Histamine Research Society ... [et al.] JID - 9508160 RN - 0 (7-oxozeanol) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 5W827M159J (Zearalenone) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 2.7.11.25 (MAP Kinase Kinase Kinases) RN - EC 2.7.11.25 (MAP kinase kinase kinase 7) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Animals MH - Chemokine CCL2/genetics MH - Glucose/pharmacology MH - Hyperglycemia/*metabolism MH - MAP Kinase Kinase Kinases/antagonists & inhibitors/*metabolism MH - Macrophage Activation/drug effects MH - Macrophages/drug effects/*metabolism MH - Male MH - Mice, Inbred C57BL MH - Mitogen-Activated Protein Kinases/metabolism MH - NF-kappa B/metabolism MH - Phosphorylation MH - RNA, Messenger/metabolism MH - Signal Transduction/drug effects MH - Tumor Necrosis Factor-alpha/genetics MH - Zearalenone/analogs & derivatives/pharmacology OTO - NOTNLM OT - Diabetic nephropathy OT - High glucose OT - Inflammation OT - MAPKs OT - NF-kappaB OT - TAK1 EDAT- 2016/05/08 06:00 MHDA- 2017/04/14 06:00 CRDT- 2016/05/08 06:00 PHST- 2015/10/30 00:00 [received] PHST- 2016/04/25 00:00 [accepted] PHST- 2016/03/22 00:00 [revised] PHST- 2016/05/08 06:00 [entrez] PHST- 2016/05/08 06:00 [pubmed] PHST- 2017/04/14 06:00 [medline] AID - 10.1007/s00011-016-0948-8 [pii] AID - 10.1007/s00011-016-0948-8 [doi] PST - ppublish SO - Inflamm Res. 2016 Aug;65(8):655-64. doi: 10.1007/s00011-016-0948-8. Epub 2016 May 6.