PMID- 30992469 OWN - NLM STAT- MEDLINE DCOM- 20201013 LR - 20210109 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 9 IP - 1 DP - 2019 Apr 16 TI - CXCL12-CXCR4 pathway activates brown adipocytes and induces insulin resistance in CXCR4-deficient mice under high-fat diet. PG - 6165 LID - 10.1038/s41598-019-42127-8 [doi] LID - 6165 AB - Brown adipose tissue (BAT) plays a role in energy expenditure and is involved in nutrient metabolism. C-X-C chemokine ligand 12 (CXCL12)-CXCR4 pathway regulates the immune, nervous, and cardiovascular systems and affects the adipose tissue. Here, we investigated the role of this pathway as an activator of BAT. Uncoupling protein 1 mRNA and protein levels and oxygen consumption increased in the brown adipocytes treated with 100 nM CXCL12 peptide. CXCL12-mediated upregulation in P38 and extracellular signal-regulated kinase (ERK) levels was reduced by each inhibitor. Thus, the CXCL12-CXCR4 pathway activated the brown adipocytes through P38 and ERK that acted downstream of this pathway. Mice with CXCR4 defects only in the brown adipocytes were generated and fed with high-fat diet (HFD). Body weight and blood glucose after glucose injection increased in these mice. Long-term exposure to HFD deteriorated blood glucose level after glucose injection. Insulin sensitivity was exacerbated in the knockout mice fed with HFD. Serum lipid parameters and CXCL12 level in knockout mice were similar to those in control mice. These results suggest that the CXCL12-CXCR4 pathway induces brown adipocyte activity and affects nutrient metabolism under HFD load. FAU - Kurita, Kenichi AU - Kurita K AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. FAU - Ishikawa, Ko AU - Ishikawa K AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. ishikawako1225@gmail.com. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. ishikawako1225@gmail.com. FAU - Takeda, Kenji AU - Takeda K AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. FAU - Fujimoto, Masanori AU - Fujimoto M AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. FAU - Ono, Hiraku AU - Ono H AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. FAU - Kumagai, Jin AU - Kumagai J AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. FAU - Inoue, Hiromi AU - Inoue H AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. FAU - Yokoh, Hidetaka AU - Yokoh H AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. FAU - Yokote, Koutaro AU - Yokote K AD - Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. AD - Division of Diabetes, Metabolism and Endocrinology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190416 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (CXCR4 protein, mouse) RN - 0 (Chemokine CXCL12) RN - 0 (Cxcl12 protein, mouse) RN - 0 (Receptors, CXCR4) SB - IM MH - Adipocytes, Brown/*metabolism MH - Animals MH - Cells, Cultured MH - Chemokine CXCL12/*metabolism MH - Diet, High-Fat/adverse effects MH - Energy Metabolism MH - Gene Deletion MH - *Insulin Resistance MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Receptors, CXCR4/genetics/*metabolism MH - *Signal Transduction PMC - PMC6467900 COIS- The authors declare no competing interests. EDAT- 2019/04/18 06:00 MHDA- 2020/10/21 06:00 PMCR- 2019/04/16 CRDT- 2019/04/18 06:00 PHST- 2018/12/17 00:00 [received] PHST- 2019/03/25 00:00 [accepted] PHST- 2019/04/18 06:00 [entrez] PHST- 2019/04/18 06:00 [pubmed] PHST- 2020/10/21 06:00 [medline] PHST- 2019/04/16 00:00 [pmc-release] AID - 10.1038/s41598-019-42127-8 [pii] AID - 42127 [pii] AID - 10.1038/s41598-019-42127-8 [doi] PST - epublish SO - Sci Rep. 2019 Apr 16;9(1):6165. doi: 10.1038/s41598-019-42127-8.