PMID- 17983584 OWN - NLM STAT- MEDLINE DCOM- 20080226 LR - 20211020 IS - 1550-4131 (Print) IS - 1550-4131 (Linking) VI - 6 IP - 5 DP - 2007 Nov TI - JNK1 in hematopoietically derived cells contributes to diet-induced inflammation and insulin resistance without affecting obesity. PG - 386-97 AB - Obesity-induced insulin resistance is a major factor in the etiology of type 2 diabetes, and Jun kinases (JNKs) are key negative regulators of insulin sensitivity in the obese state. Activation of JNKs (mainly JNK1) in insulin target cells results in phosphorylation of insulin receptor substrates (IRSs) at serine and threonine residues that inhibit insulin signaling. JNK1 activation is also required for accumulation of visceral fat. Here we used reciprocal adoptive transfer experiments to determine whether JNK1 in myeloid cells, such as macrophages, also contributes to insulin resistance and central adiposity. Our results show that deletion of Jnk1 in the nonhematopoietic compartment protects mice from high-fat diet (HFD)-induced insulin resistance, in part through decreased adiposity. By contrast, Jnk1 removal from hematopoietic cells has no effect on adiposity but confers protection against HFD-induced insulin resistance by decreasing obesity-induced inflammation. FAU - Solinas, Giovanni AU - Solinas G AD - Department of Medicine, University of Fribourg, Chemin du Musee 5, CH-1700 Fribourg, Switzerland. FAU - Vilcu, Cristian AU - Vilcu C FAU - Neels, Jaap G AU - Neels JG FAU - Bandyopadhyay, Gautam K AU - Bandyopadhyay GK FAU - Luo, Jun-Li AU - Luo JL FAU - Naugler, Willscott AU - Naugler W FAU - Grivennikov, Sergei AU - Grivennikov S FAU - Wynshaw-Boris, Anthony AU - Wynshaw-Boris A FAU - Scadeng, Miriam AU - Scadeng M FAU - Olefsky, Jerrold M AU - Olefsky JM FAU - Karin, Michael AU - Karin M LA - eng GR - DK033651/DK/NIDDK NIH HHS/United States GR - ES006376/ES/NIEHS NIH HHS/United States GR - ES004151/ES/NIEHS NIH HHS/United States GR - T32 DK007202/DK/NIDDK NIH HHS/United States GR - DK074868/DK/NIDDK NIH HHS/United States GR - R01 ES006376/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Cell Metab JT - Cell metabolism JID - 101233170 RN - 0 (Cytokines) RN - 0 (Dietary Fats) RN - 0 (Interleukin-6) RN - 0 (Palmitates) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Cells, Cultured MH - Cytokines/metabolism MH - Dietary Fats/administration & dosage MH - Energy Metabolism MH - Flow Cytometry MH - Hematopoietic Stem Cells/enzymology/*metabolism MH - Inflammation/chemically induced/*metabolism/physiopathology MH - Insulin Resistance MH - Interleukin-6/metabolism MH - JNK Mitogen-Activated Protein Kinases/genetics/*metabolism MH - Macrophages/cytology/drug effects/metabolism MH - Magnetic Resonance Imaging MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Models, Biological MH - Obesity/chemically induced/metabolism/physiopathology MH - Palmitates/pharmacology MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 2007/11/07 09:00 MHDA- 2008/02/27 09:00 CRDT- 2007/11/07 09:00 PHST- 2007/06/12 00:00 [received] PHST- 2007/08/21 00:00 [revised] PHST- 2007/09/26 00:00 [accepted] PHST- 2007/11/07 09:00 [pubmed] PHST- 2008/02/27 09:00 [medline] PHST- 2007/11/07 09:00 [entrez] AID - S1550-4131(07)00292-6 [pii] AID - 10.1016/j.cmet.2007.09.011 [doi] PST - ppublish SO - Cell Metab. 2007 Nov;6(5):386-97. doi: 10.1016/j.cmet.2007.09.011.