PMID- 28536301 OWN - NLM STAT- MEDLINE DCOM- 20180104 LR - 20180104 IS - 1937-9145 (Electronic) IS - 1945-0877 (Linking) VI - 10 IP - 480 DP - 2017 May 23 TI - Key determinants of selective binding and activation by the monocyte chemoattractant proteins at the chemokine receptor CCR2. LID - eaai8529 [pii] LID - 10.1126/scisignal.aai8529 [doi] AB - Chemokines and their receptors collectively orchestrate the trafficking of leukocytes in normal immune function and inflammatory diseases. Different chemokines can induce distinct responses at the same receptor. In comparison to monocyte chemoattractant protein-1 (MCP-1; also known as CCL2), the chemokines MCP-2 (CCL8) and MCP-3 (CCL7) are partial agonists of their shared receptor CCR2, a key regulator of the trafficking of monocytes and macrophages that contribute to the pathology of atherosclerosis, obesity, and type 2 diabetes. Through experiments with chimeras of MCP-1 and MCP-3, we identified the chemokine amino-terminal region as being the primary determinant of both the binding and signaling selectivity of these two chemokines at CCR2. Analysis of CCR2 mutants showed that the chemokine amino terminus interacts with the major subpocket in the transmembrane helical bundle of CCR2, which is distinct from the interactions of some other chemokines with the minor subpockets of their receptors. These results suggest the major subpocket as a target for the development of small-molecule inhibitors of CCR2. CI - Copyright (c) 2017, American Association for the Advancement of Science. FAU - Huma, Zil E AU - Huma ZE AUID- ORCID: 0000-0002-4257-1675 AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Sanchez, Julie AU - Sanchez J AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Lim, Herman D AU - Lim HD AD - Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia. FAU - Bridgford, Jessica L AU - Bridgford JL AUID- ORCID: 0000-0001-8381-1121 AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. AD - Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia. FAU - Huang, Cheng AU - Huang C AUID- ORCID: 0000-0002-4575-1233 AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Parker, Bradyn J AU - Parker BJ AUID- ORCID: 0000-0001-5727-4879 AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Pazhamalil, Jiann G AU - Pazhamalil JG AUID- ORCID: 0000-0002-9865-316X AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Porebski, Benjamin T AU - Porebski BT AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Pfleger, Kevin D G AU - Pfleger KDG AD - Molecular Endocrinology and Pharmacology, Harry Perkins Institute of Medical Research, QEII Medical Centre; and Centre for Medical Research, University of Western Australia, Crawley and Dimerix Bioscience Limited, Nedlands, Western Australia, Australia. FAU - Lane, J Robert AU - Lane JR AUID- ORCID: 0000-0002-7361-7875 AD - Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia. FAU - Canals, Meritxell AU - Canals M AUID- ORCID: 0000-0002-7942-5006 AD - Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia. martin.stone@monash.edu meri.canals@monash.edu. FAU - Stone, Martin J AU - Stone MJ AUID- ORCID: 0000-0002-6468-4427 AD - Infection and Immunity Program, Monash Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. martin.stone@monash.edu meri.canals@monash.edu. LA - eng PT - Journal Article DEP - 20170523 PL - United States TA - Sci Signal JT - Science signaling JID - 101465400 RN - 0 (CCL2 protein, human) RN - 0 (CCL7 protein, human) RN - 0 (CCR2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL7) RN - 0 (Chemokines) RN - 0 (Receptors, CCR2) SB - IM MH - Amino Acid Sequence MH - Chemokine CCL2/chemistry/metabolism MH - Chemokine CCL7/chemistry/metabolism MH - Chemokines/*chemistry/*metabolism MH - Humans MH - Models, Molecular MH - Protein Binding MH - Receptors, CCR2/*chemistry/genetics/*metabolism MH - Sequence Homology EDAT- 2017/05/26 06:00 MHDA- 2018/01/05 06:00 CRDT- 2017/05/25 06:00 PHST- 2017/05/25 06:00 [entrez] PHST- 2017/05/26 06:00 [pubmed] PHST- 2018/01/05 06:00 [medline] AID - 10/480/eaai8529 [pii] AID - 10.1126/scisignal.aai8529 [doi] PST - epublish SO - Sci Signal. 2017 May 23;10(480):eaai8529. doi: 10.1126/scisignal.aai8529.