CCR2

CCR2
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 1KAD, 1KP1
Identifiers
Aliases	CCR2, CC-CKR-2, CCR-2, CCR2A, CCR2B, CD192, CKR2, CKR2A, CKR2B, CMKBR2, MCP-1-R, C-C motif chemokine receptor 2
External IDs	OMIM: 601267; MGI: 106185; HomoloGene: 537; GeneCards: CCR2; OMA:CCR2 - orthologs
Gene location (Human) Chr. Chromosome 3 (human) Band 3p21.31 Start 46,353,864 bp End 46,360,940 bp
Gene location (Mouse) Chr. Chromosome 9 (mouse) Band 9 F4|9 75.05 cM Start 123,901,987 bp End 123,913,594 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in monocyte granulocyte blood bone marrow cells appendix spleen lymph node trabecular bone parietal pleura rectum Top expressed in lumbar spinal ganglion blood tibiofemoral joint granulocyte ankle intercostal muscle body of femur bone marrow ankle joint subcutaneous adipose tissue More reference expression data BioGPS n/a
Gene ontology Molecular function CCR2 chemokine receptor binding G protein-coupled receptor activity protein homodimerization activity signal transducer activity chemokine receptor activity C-C chemokine receptor activity protein binding cytokine binding chemokine (C-C motif) ligand 2 binding chemokine (C-C motif) ligand 12 binding chemokine (C-C motif) ligand 7 binding chemokine binding C-C chemokine binding Cellular component integral component of membrane perikaryon membrane plasma membrane integral component of plasma membrane soma dendrite perinuclear region of cytoplasm cytoplasm cytosol external side of plasma membrane Biological process negative regulation of adenylate cyclase activity receptor signaling pathway via JAK-STAT chemokine-mediated signaling pathway cellular calcium ion homeostasis positive regulation of monocyte chemotaxis dendritic cell chemotaxis chemotaxis blood vessel remodeling response to wounding immune response inflammatory response viral process positive regulation of astrocyte chemotaxis signal transduction positive regulation of cytosolic calcium ion concentration G protein-coupled receptor signaling pathway monocyte chemotaxis positive regulation of T-helper 1 type immune response negative regulation of type 2 immune response humoral immune response cellular defense response regulation of vascular endothelial growth factor production positive regulation of T cell chemotaxis negative regulation of angiogenesis sensory perception of pain cellular homeostasis regulation of cell migration positive regulation of interferon-gamma production positive regulation of interleukin-2 production T-helper 17 cell chemotaxis negative regulation of eosinophil degranulation positive regulation of alpha-beta T cell proliferation homeostasis of number of cells within a tissue positive regulation of inflammatory response positive regulation of T cell activation leukocyte adhesion to vascular endothelial cell positive regulation of immune complex clearance by monocytes and macrophages neutrophil clearance positive regulation of leukocyte tethering or rolling positive regulation of monocyte extravasation positive regulation of CD8-positive, alpha-beta T cell extravasation positive regulation of hematopoietic stem cell migration cytokine-mediated signaling pathway hemopoiesis calcium-mediated signaling cell chemotaxis positive regulation of cold-induced thermogenesis regulation of T cell cytokine production monocyte extravasation regulation of T cell differentiation regulation of inflammatory response positive regulation of synaptic transmission, glutamatergic inflammatory response to wounding macrophage migration positive regulation of thymocyte migration positive regulation of NMDA glutamate receptor activity Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 729230 12772 Ensembl ENSG00000121807 ENSMUSG00000049103 UniProt P41597 P51683 RefSeq (mRNA) NM_001123041 NM_001123396 NM_009915 RefSeq (protein) NP_001116513 NP_001116868 NP_001116868.1 NP_034045 Location (UCSC) Chr 3: 46.35 – 46.36 Mb Chr 9: 123.9 – 123.91 Mb PubMed search
Wikidata
View/Edit Human View/Edit Mouse

C-C chemokine receptor type 2 (CCR2 or CD192 (cluster of differentiation 192) is a protein that in humans is encoded by the CCR2 gene. CCR2 is a CC chemokine receptor.

Gene

This CCR2 gene is located in the chemokine receptor gene cluster region. Two alternatively spliced transcript variants are expressed by the gene.

Function

This gene encodes two isoforms of a receptor for monocyte chemoattractant protein-1 (CCL2), a chemokine which specifically mediates monocyte chemotaxis. Monocyte chemoattractant protein-1 is involved in monocyte infiltration in inflammatory diseases such as rheumatoid arthritis as well as in the inflammatory response against tumors. The receptors encoded by this gene mediate agonist-dependent calcium mobilization and inhibition of adenylyl cyclase.

Animal studies

Alzheimer

CCR2 deficient mice have been shown to develop an accelerated Alzheimer's-like pathology in comparison to wild type mice. This is not the first time that immune function and inflammation have been linked to age-related cognitive decline (i.e. dementia).

Obesity

Within the fat (adipose) tissue of CCR2 deficient mice, there is an increased number of eosinophils, greater alternative macrophage activation, and a propensity towards type 2 cytokine expression. Furthermore, this effect was exaggerated when the mice became obese from a high fat diet.

Myocardial Infarct

CCR2 surface expression on blood monocytes changes in a time-of-day–dependent manner (being higher at the beginning of the active phase) and affects monocytes recruitment in tissues including the heart. As a consequence when an acute ischemic event happens during the active phase, monocytes are more susceptible to invade the heart. An excessive monocytes infiltration generates higher inflammation and increases the risk of heart failure.

Clinical significance

In an observational study of gene expression in blood leukocytes in humans, Harries et al. found evidence of a relationship between expression of CCR2 and cognitive function (assessed using the mini-mental state examination, MMSE). Higher CCR2 expression was associated with worse performance on the MMSE assessment of cognitive function. The same study found that CCR2 expression was also associated with cognitive decline over 9-years in a sub-analysis on inflammatory related transcripts only. Harries et al. suggest that CCR2 signaling may have a direct role in human cognition, partly because expression of CCR2 was associated with the ApoE haplotype (previously associated with Alzheimer's disease), but also because CCL2 is expressed at high concentrations in macrophages found in atherosclerotic plaques and in brain microglia. The difference in observations between mice (CCR2 depletion causes cognitive decline) and humans (higher CCR2 associated with lower cognitive function) could be due to increased demand for macrophage activation during cognitive decline, associated with increased β-amyloid deposition (a core feature of Alzheimer's disease progression).

See also

• CC chemokine receptors
• Cluster of differentiation

Further reading

• Sozzani S, Introna M, Bernasconi S, Polentarutti N, Cinque P, Poli G, Sica A, Mantovani A (July 1997). "MCP-1 and CCR2 in HIV infection: regulation of agonist and receptor expression". Journal of Leukocyte Biology. 62 (1): 30–3. doi:10.1002/jlb.62.1.30. PMID 9225989. S2CID 2441407.
• Choe H, Martin KA, Farzan M, Sodroski J, Gerard NP, Gerard C (June 1998). "Structural interactions between chemokine receptors, gp120 Env and CD4". Seminars in Immunology. 10 (3): 249–57. doi:10.1006/smim.1998.0127. PMID 9653051.
• Cunningham AL, Li S, Juarez J, Lynch G, Alali M, Naif H (September 2000). "The level of HIV infection of macrophages is determined by interaction of viral and host cell genotypes". Journal of Leukocyte Biology. 68 (3): 311–7. doi:10.1189/jlb.68.3.311. PMID 10985245. S2CID 38354228.
• Ruibal-Ares BH, Belmonte L, Baré PC, Parodi CM, Massud I, de Bracco MM (January 2004). "HIV-1 infection and chemokine receptor modulation". Current HIV Research. 2 (1): 39–50. doi:10.2174/1570162043484997. PMID 15053339.
• Yamagami S, Tokuda Y, Ishii K, Tanaka H, Endo N (July 1994). "cDNA cloning and functional expression of a human monocyte chemoattractant protein 1 receptor". Biochemical and Biophysical Research Communications. 202 (2): 1156–62. doi:10.1006/bbrc.1994.2049. PMID 8048929.
• Charo IF, Myers SJ, Herman A, Franci C, Connolly AJ, Coughlin SR (March 1994). "Molecular cloning and functional expression of two monocyte chemoattractant protein 1 receptors reveals alternative splicing of the carboxyl-terminal tails". Proceedings of the National Academy of Sciences of the United States of America. 91 (7): 2752–6. Bibcode:1994PNAS...91.2752C. doi:10.1073/pnas.91.7.2752. PMC 43448. PMID 8146186.
• Combadiere C, Ahuja SK, Van Damme J, Tiffany HL, Gao JL, Murphy PM (December 1995). "Monocyte chemoattractant protein-3 is a functional ligand for CC chemokine receptors 1 and 2B". The Journal of Biological Chemistry. 270 (50): 29671–5. doi:10.1074/jbc.270.50.29671. PMID 8530354.
• Samson M, Soularue P, Vassart G, Parmentier M (September 1996). "The genes encoding the human CC-chemokine receptors CC-CKR1 to CC-CKR5 (CMKBR1-CMKBR5) are clustered in the p21.3-p24 region of chromosome 3". Genomics. 36 (3): 522–6. doi:10.1006/geno.1996.0498. PMID 8884276.
• Wong LM, Myers SJ, Tsou CL, Gosling J, Arai H, Charo IF (January 1997). "Organization and differential expression of the human monocyte chemoattractant protein 1 receptor gene. Evidence for the role of the carboxyl-terminal tail in receptor trafficking". The Journal of Biological Chemistry. 272 (2): 1038–45. doi:10.1074/jbc.272.2.1038. PMID 8995400.
• Polentarutti N, Allavena P, Bianchi G, Giardina G, Basile A, Sozzani S, Mantovani A, Introna M (March 1997). "IL-2-regulated expression of the monocyte chemotactic protein-1 receptor (CCR2) in human NK cells: characterization of a predominant 3.4-kilobase transcript containing CCR2B and CCR2A sequences". Journal of Immunology. 158 (6): 2689–94. doi:10.4049/jimmunol.158.6.2689. PMID 9058802. S2CID 24232430.
• Li Q, Lan X, Han X, Wang J (January 2019). "Expression of Tmem119/Sall1 and Ccr2/CD69 in FACS-Sorted Microglia- and Monocyte/Macrophage-Enriched Cell Populations After Intracerebral Hemorrhage". Front Cell Neurosci. 12: 520. doi:10.3389/fncel.2018.00520. PMC 6333739. PMID 30687011.
• Gong X, Gong W, Kuhns DB, Ben-Baruch A, Howard OM, Wang JM (May 1997). "Monocyte chemotactic protein-2 (MCP-2) uses CCR1 and CCR2B as its functional receptors". The Journal of Biological Chemistry. 272 (18): 11682–5. doi:10.1074/jbc.272.18.11682. PMID 9115216.
• Daugherty BL, Springer MS (April 1997). "The beta-chemokine receptor genes CCR1 (CMKBR1), CCR2 (CMKBR2), and CCR3 (CMKBR3) cluster within 285 kb on human chromosome 3p21". Genomics. 41 (2): 294–5. doi:10.1006/geno.1997.4626. PMID 9143512.
• Berkhout TA, Sarau HM, Moores K, White JR, Elshourbagy N, Appelbaum E, Reape RJ, Brawner M, Makwana J, Foley JJ, Schmidt DB, Imburgia C, McNulty D, Matthews J, O'Donnell K, O'Shannessy D, Scott M, Groot PH, Macphee C (June 1997). "Cloning, in vitro expression, and functional characterization of a novel human CC chemokine of the monocyte chemotactic protein (MCP) family (MCP-4) that binds and signals through the CC chemokine receptor 2B". The Journal of Biological Chemistry. 272 (26): 16404–13. doi:10.1074/jbc.272.26.16404. PMID 9195948.
• Smith MW, Dean M, Carrington M, Winkler C, Huttley GA, Lomb DA, Goedert JJ, O'Brien TR, Jacobson LP, Kaslow R, Buchbinder S, Vittinghoff E, Vlahov D, Hoots K, Hilgartner MW, O'Brien SJ (August 1997). "Contrasting genetic influence of CCR2 and CCR5 variants on HIV-1 infection and disease progression. Hemophilia Growth and Development Study (HGDS), Multicenter AIDS Cohort Study (MACS), Multicenter Hemophilia Cohort Study (MHCS), San Francisco City Cohort (SFCC), ALIVE Study". Science. 277 (5328): 959–65. doi:10.1126/science.277.5328.959. PMID 9252328.
• Monteclaro FS, Charo IF (September 1997). "The amino-terminal domain of CCR2 is both necessary and sufficient for high affinity binding of monocyte chemoattractant protein 1. Receptor activation by a pseudo-tethered ligand". The Journal of Biological Chemistry. 272 (37): 23186–90. doi:10.1074/jbc.272.37.23186. PMID 9287323.
• Aragay AM, Mellado M, Frade JM, Martin AM, Jimenez-Sainz MC, Martinez-A C, Mayor F (March 1998). "Monocyte chemoattractant protein-1-induced CCR2B receptor desensitization mediated by the G protein-coupled receptor kinase 2". Proceedings of the National Academy of Sciences of the United States of America. 95 (6): 2985–90. Bibcode:1998PNAS...95.2985A. doi:10.1073/pnas.95.6.2985. PMC 19681. PMID 9501202.
• Frade JM, Mellado M, del Real G, Gutierrez-Ramos JC, Lind P, Martinez-A C (December 1997). "Characterization of the CCR2 chemokine receptor: functional CCR2 receptor expression in B cells". Journal of Immunology. 159 (11): 5576–84. doi:10.4049/jimmunol.159.11.5576. PMID 9548499.
• Mummidi S, Ahuja SS, Gonzalez E, Anderson SA, Santiago EN, Stephan KT, Craig FE, O'Connell P, Tryon V, Clark RA, Dolan MJ, Ahuja SK (July 1998). "Genealogy of the CCR5 locus and chemokine system gene variants associated with altered rates of HIV-1 disease progression". Nature Medicine. 4 (7): 786–93. doi:10.1038/nm0798-786. PMID 9662369. S2CID 30305043.

External links

• Human CCR2 genome location and CCR2 gene details page in the UCSC Genome Browser.
• "Chemokine Receptors: CCR2". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology. Archived from the original on 2008-06-07. Retrieved 2008-11-25.
• CCR2+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
• description at Information Hyperlinked Over Proteins

This article incorporates text from the United States National Library of Medicine, which is in the public domain.