PMID- 31962332 OWN - NLM STAT- MEDLINE DCOM- 20200923 LR - 20200923 IS - 1662-4033 (Electronic) IS - 1662-4025 (Print) IS - 1662-4025 (Linking) VI - 13 IP - 1 DP - 2020 TI - The Role of MKP-5 in Adipocyte-Macrophage Interactions during Obesity. PG - 86-101 LID - 10.1159/000505343 [doi] AB - OBJECTIVE: In obese individuals, chronic low-grade inflammation resulting from adipocyte-macrophage interactions is a major cause of adipose tissue dysfunction and metabolic disease. This study investigated the role of MAP kinase phosphatase-5 (MKP-5) in obesity-induced inflammation during macrophage and adipocyte interactions. METHODS: High-fat diet-induced obese mice were used to explore the role of MKP-5 in obesity-induced adipose tissue inflammation. Macrophage polarization was determined by inflammatory cytokine expression in MKP-5-overexpressed or -silenced Raw264.7 cells exposed to palmitate (PA) or M1/M2 macrophage inducers. To uncover the role of MKP-5 during macrophage-adipocyte interactions, a coculture system composed of differentiated 3T3-L1 and Raw264.7 cells was employed. MAPK inhibitors were used to investigate the involvement of MAPK signaling. RESULTS: Increased MKP-5 expression was observed in adipose stromal vascular cells (SVCs) of obese mice. In Raw264.7 cells, MKP-5 promoted the switching of M1 macrophages to an M2 phenotype. Notably, MKP-5 reduced inflammation during the interaction of macrophages and adipocytes. MKP-5 overexpression in primary SVCs attenuated the expression of inflammatory mediators and increased the number of obesity-induced adipose tissue macrophages. MKP-5 suppressed PA-induced inflammation through the inactivation of P38, JNK, and ERK MAPKs. CONCLUSIONS: MKP-5 promotes macrophages to switch from the M1 to the M2 phenotype and is an inflammatory inhibitor involved in obesity-induced adipose tissue inflammation and PA-triggered macrophage inflammation via the P38, JNK, and ERK MAPK pathways. MKP-5 may be developed into a potential therapeutic target for obesity-related diseases, including type 2 diabetes mellitus and insulin resistance. CI - (c) 2020 The Author(s) Published by S. Karger AG, Basel. FAU - Lu, Yuanhua AU - Lu Y AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Ma, Jie AU - Ma J AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China, ma_jie@jlu.edu.cn. FAU - Zhao, Jianan AU - Zhao J AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Song, Zhuoyao AU - Song Z AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Zhou, Chao AU - Zhou C AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Liu, Xiu AU - Liu X AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Teng, Wenjing AU - Teng W AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Wang, Wei AU - Wang W AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Zhang, Qi AU - Zhang Q AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Yan, Weiqun AU - Yan W AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. FAU - Jiao, Ping AU - Jiao P AD - School of Pharmaceutical Sciences, Jilin University, Changchun, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200121 PL - Switzerland TA - Obes Facts JT - Obesity facts JID - 101469429 RN - EC 3.1.3.16 (Dusp10 protein, mouse) RN - EC 3.1.3.48 (Dual-Specificity Phosphatases) SB - IM MH - 3T3-L1 Cells MH - Adipocytes/*physiology MH - Adipose Tissue/pathology MH - Animals MH - Cell Communication/*genetics MH - Coculture Techniques MH - Diet, High-Fat MH - Dual-Specificity Phosphatases/genetics/*physiology MH - HEK293 Cells MH - Humans MH - Insulin Resistance/genetics MH - Macrophages/*physiology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Obese MH - Obesity/etiology/genetics/*pathology MH - RAW 264.7 Cells PMC - PMC7098294 OTO - NOTNLM OT - Adipocytes OT - Inflammation OT - MKP-5 OT - Macrophage OT - Obesity COIS- The authors declare no potential conflicts of interest. EDAT- 2020/01/22 06:00 MHDA- 2020/09/24 06:00 PMCR- 2020/01/21 CRDT- 2020/01/22 06:00 PHST- 2019/09/12 00:00 [received] PHST- 2019/12/08 00:00 [accepted] PHST- 2020/01/22 06:00 [pubmed] PHST- 2020/09/24 06:00 [medline] PHST- 2020/01/22 06:00 [entrez] PHST- 2020/01/21 00:00 [pmc-release] AID - 000505343 [pii] AID - ofa-0013-0086 [pii] AID - 10.1159/000505343 [doi] PST - ppublish SO - Obes Facts. 2020;13(1):86-101. doi: 10.1159/000505343. Epub 2020 Jan 21.