PMID- 28429777 OWN - NLM STAT- MEDLINE DCOM- 20190722 LR - 20220410 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 7 DP - 2017 Apr 21 TI - Interleukin-6 increases the expression and activity of insulin-degrading enzyme. PG - 46750 LID - 10.1038/srep46750 [doi] LID - 46750 AB - Impairment of the insulin-degrading enzyme (IDE) is associated with obesity and type 2 diabetes mellitus (T2DM). Here, we used 4-mo-old male C57BL/6 interleukin-6 (IL-6) knockout mice (KO) to investigate the role of this cytokine on IDE expression and activity. IL-6 KO mice displayed lower insulin clearance in the liver and skeletal muscle, compared with wild type (WT), due to reduced IDE expression and activity. We also observed that after 3-h incubation, IL-6, 50 and 100 ng ml(-1), increased the expression of IDE in HEPG2 and C2C12 cells, respectively. In addition, during acute exercise, the inhibition of IL-6 prevented an increase in insulin clearance and IDE expression and activity, mainly in the skeletal muscle. Finally, IL-6 and IDE concentrations were significantly increased in plasma from humans, after an acute exercise, compared to pre-exercise values. Although the increase in plasma IDE activity was only marginal, a positive correlation between IL-6 and IDE activity, and between IL-6 and IDE protein expression, was observed. Our outcomes indicate a novel function of IL-6 on the insulin metabolism expanding the possibilities for new potential therapeutic strategies, focused on insulin degradation, for the treatment and/or prevention of diseases related to hyperinsulinemia, such as obesity and T2DM. FAU - Kurauti, Mirian A AU - Kurauti MA AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Costa-Junior, Jose M AU - Costa-Junior JM AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Ferreira, Sandra M AU - Ferreira SM AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Santos, Gustavo J AU - Santos GJ AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. AD - Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina (UFSC), Florianopolis, SC, Brazil. FAU - Sponton, Carlos H G AU - Sponton CHG AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Carneiro, Everardo M AU - Carneiro EM AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Telles, Guilherme D AU - Telles GD AD - Exercise Physiology Laboratory (FISEX), Faculty of Physical Education, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Chacon-Mikahil, Mara P T AU - Chacon-Mikahil MPT AD - Exercise Physiology Laboratory (FISEX), Faculty of Physical Education, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Cavaglieri, Claudia R AU - Cavaglieri CR AD - Exercise Physiology Laboratory (FISEX), Faculty of Physical Education, University of Campinas (UNICAMP), Campinas, SP, Brazil. FAU - Rezende, Luiz F AU - Rezende LF AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. AD - Laboratory of Health Sciences, Department of Physiopathology, State University of Montes Claros (UNIMONTES), Montes Claros, MG, Brazil. FAU - Boschero, Antonio C AU - Boschero AC AD - Obesity and Comorbidities Research Center (OCRC), Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170421 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Insulin) RN - 0 (Interleukin-6) RN - EC 3.4.24.56 (Insulysin) SB - IM MH - Animals MH - Cell Line MH - Gene Expression Regulation, Enzymologic/*drug effects MH - Hep G2 Cells MH - Humans MH - Insulin/*metabolism MH - Insulysin/blood/*genetics/metabolism MH - Interleukin-6/genetics/metabolism/*pharmacology MH - Liver/drug effects/metabolism MH - Male MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Muscle, Skeletal/drug effects/metabolism MH - Physical Conditioning, Animal PMC - PMC5399448 COIS- The authors declare no competing financial interests. EDAT- 2017/04/22 06:00 MHDA- 2019/07/23 06:00 PMCR- 2017/04/21 CRDT- 2017/04/22 06:00 PHST- 2016/12/22 00:00 [received] PHST- 2017/03/21 00:00 [accepted] PHST- 2017/04/22 06:00 [entrez] PHST- 2017/04/22 06:00 [pubmed] PHST- 2019/07/23 06:00 [medline] PHST- 2017/04/21 00:00 [pmc-release] AID - srep46750 [pii] AID - 10.1038/srep46750 [doi] PST - epublish SO - Sci Rep. 2017 Apr 21;7:46750. doi: 10.1038/srep46750.