PMID- 18977759 OWN - NLM STAT- MEDLINE DCOM- 20090212 LR - 20211203 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 283 IP - 51 DP - 2008 Dec 19 TI - Role of CC chemokine receptor 2 in bone marrow cells in the recruitment of macrophages into obese adipose tissue. PG - 35715-23 LID - 10.1074/jbc.M804220200 [doi] AB - The MCP-1 (monocyte chemoattractant protein-1)/CCR2 (CC motif chemokine receptor-2) pathway may play a role in macrophage infiltration into obese adipose tissue. Here we investigated the role of CCR2 in the recruitment of bone marrow-derived macrophages into obese adipose tissue in vitro and in vivo. Using the TAXIScan device, which can measure quantitatively the directionality and velocity of cell migration at time lapse intervals in vitro, we demonstrated that bone marrow cells (BMCs) from wild type mice migrate directly toward MCP-1 or culture medium conditioned by adipose tissue explants of genetically obese ob/ob mice, which are efficiently suppressed by pharmacological blockade of CCR2 signaling. The number of F4/80-positive macrophages was reduced in the adipose tissue from high fat diet-fed obese KKAy or ob/ob mice treated with a CCR2 antagonist propagermanium relative to vehicle-treated groups. We also found that the number of macrophages is reduced in the adipose tissue from ob/ob mice reconstituted with CCR2(-/-) BMCs (ob/ob + CCR2(-/-) BMCs) relative to those with CCR2+/+ BMCs (ob/ob + CCR2+/+ BMCs). Expression of mRNAs for CD11c and TLR4 (Toll-like receptor 4) markers of proinflammatory M1 macrophages was also decreased in the adipose tissue from ob/ob + CCR2(-/-) BMCs relative to ob/ob + CCR2+/+ BMCs, whereas mannose receptor and CD163, markers of anti-inflammatory M2 macrophages, were unchanged. This study provides in vivo and in vitro evidence that CCR2 in bone marrow cells plays an important role in the recruitment of macrophages into obese adipose tissue. FAU - Ito, Ayaka AU - Ito A AD - Department of Molecular Medicine and Metabolism, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Tokyo 113-8510, Japan. FAU - Suganami, Takayoshi AU - Suganami T FAU - Yamauchi, Akira AU - Yamauchi A FAU - Degawa-Yamauchi, Mikako AU - Degawa-Yamauchi M FAU - Tanaka, Miyako AU - Tanaka M FAU - Kouyama, Ryuji AU - Kouyama R FAU - Kobayashi, Yuko AU - Kobayashi Y FAU - Nitta, Nao AU - Nitta N FAU - Yasuda, Kazuki AU - Yasuda K FAU - Hirata, Yukio AU - Hirata Y FAU - Kuziel, William A AU - Kuziel WA FAU - Takeya, Motohiro AU - Takeya M FAU - Kanegasaki, Shiro AU - Kanegasaki S FAU - Kamei, Yasutomi AU - Kamei Y FAU - Ogawa, Yoshihiro AU - Ogawa Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081030 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, Myelomonocytic) RN - 0 (CCL2 protein, human) RN - 0 (CCR2 protein, human) RN - 0 (CD11c Antigen) RN - 0 (CD163 antigen) RN - 0 (Ccl2 protein, mouse) RN - 0 (Ccr2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Lectins, C-Type) RN - 0 (Mannose Receptor) RN - 0 (Mannose-Binding Lectins) RN - 0 (Receptors, CCR2) RN - 0 (Receptors, Cell Surface) RN - 0 (TLR4 protein, human) RN - 0 (Tlr4 protein, mouse) RN - 0 (Toll-Like Receptor 4) SB - IM MH - Adipose Tissue/*metabolism/pathology MH - Animals MH - Antigens, CD/genetics/metabolism MH - Antigens, Differentiation, Myelomonocytic/genetics/metabolism MH - Bone Marrow Cells/*metabolism/pathology MH - CD11c Antigen/genetics/metabolism MH - *Cell Movement MH - Chemokine CCL2/genetics/metabolism MH - Humans MH - Jurkat Cells MH - Lectins, C-Type/genetics/metabolism MH - Macrophages/*metabolism/pathology MH - Mannose Receptor MH - Mannose-Binding Lectins/genetics/metabolism MH - Mice MH - Mice, Knockout MH - Mice, Obese MH - Obesity/genetics/*metabolism/pathology MH - Receptors, CCR2/genetics/*metabolism MH - Receptors, Cell Surface/genetics/metabolism MH - Toll-Like Receptor 4/genetics/metabolism EDAT- 2008/11/04 09:00 MHDA- 2009/02/13 09:00 CRDT- 2008/11/04 09:00 PHST- 2008/11/04 09:00 [entrez] PHST- 2008/11/04 09:00 [pubmed] PHST- 2009/02/13 09:00 [medline] AID - S0021-9258(20)58515-3 [pii] AID - 10.1074/jbc.M804220200 [doi] PST - ppublish SO - J Biol Chem. 2008 Dec 19;283(51):35715-23. doi: 10.1074/jbc.M804220200. Epub 2008 Oct 30.