EMR1

EGF-like module-containing mucin-like hormone receptor-like 1 also known as F4/80 is a protein encoded by the ADGRE1 gene.[5][6][7][8][9] EMR1 is a member of the adhesion GPCR family.[10][11] Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.[12]

ADGRE1
Identifiers
AliasesADGRE1, TM7LN3, EMR1, adhesion G protein-coupled receptor E1
External IDsOMIM: 600493 MGI: 106912 HomoloGene: 1493 GeneCards: ADGRE1
Orthologs
SpeciesHumanMouse
Entrez

2015

13733

Ensembl

ENSG00000174837

ENSMUSG00000004730

UniProt

Q14246

Q61549

RefSeq (mRNA)

NM_001256252
NM_001256253
NM_001256254
NM_001256255
NM_001974

NM_010130
NM_001355722
NM_001355723

RefSeq (protein)

NP_001243181
NP_001243182
NP_001243183
NP_001243184
NP_001965

NP_034260
NP_001342651
NP_001342652

Location (UCSC)Chr 19: 6.89 – 6.94 MbChr 17: 57.67 – 57.79 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

EMR1 expression in human is restricted to eosinophils and is a specific marker for these cells.[13] The murine homolog of EMR1, F4/80, is a well-known and widely used marker of murine macrophage populations.[14] The N-terminal fragment (NTF) of EMR1 contains 4-6 Epidermal Growth Factor-like (EGF-like) domains in human and 4-7 EGF-like domains in the mouse.[15]

Function

Utilizing F4/80 knockout mice, Lin et al. showed that F4/80 is not necessary for the development of tissue macrophages but is required for the induction of efferent CD8+ regulatory T cells needed for peripheral tolerance.[16]

Clinical significance

Legrand et al. demonstrated that EMR1 can serve as a therapeutic target for depletion of these cells in eosinophilic disorders by using afucosylated antibodies.[17]

See also

References
  1. GRCh38: Ensembl release 89: ENSG00000174837 - Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000004730 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Baud V, Chissoe SL, Viegas-Péquignot E, Diriong S, N'Guyen VC, Roe BA, Lipinski M (March 1995). "EMR1, an unusual member in the family of hormone receptors with seven transmembrane segments". Genomics. 26 (2): 334–44. doi:10.1016/0888-7543(95)80218-B. PMID 7601460.
  6. McKnight AJ, Gordon S (March 1998). "The EGF-TM7 family: unusual structures at the leukocyte surface". Journal of Leukocyte Biology. 63 (3): 271–80. doi:10.1002/jlb.63.3.271. PMID 9500513. S2CID 6497890.
  7. "Entrez Gene: EMR1 egf-like module containing, mucin-like, hormone receptor-like 1".
  8. Leenen PJ, de Bruijn MF, Voerman JS, Campbell PA, van Ewijk W (September 1994). "Markers of mouse macrophage development detected by monoclonal antibodies". Journal of Immunological Methods. 174 (1–2): 5–19. doi:10.1016/0022-1759(94)90005-1. hdl:1765/71089. PMID 8083537.
  9. Hamann, J; Aust, G; Araç, D; Engel, FB; Formstone, C; Fredriksson, R; Hall, RA; Harty, BL; Kirchhoff, C; Knapp, B; Krishnan, A; Liebscher, I; Lin, HH; Martinelli, DC; Monk, KR; Peeters, MC; Piao, X; Prömel, S; Schöneberg, T; Schwartz, TW; Singer, K; Stacey, M; Ushkaryov, YA; Vallon, M; Wolfrum, U; Wright, MW; Xu, L; Langenhan, T; Schiöth, HB (April 2015). "International Union of Basic and Clinical Pharmacology. XCIV. Adhesion G protein-coupled receptors". Pharmacological Reviews. 67 (2): 338–67. doi:10.1124/pr.114.009647. PMC 4394687. PMID 25713288.
  10. Stacey M, Yona S (2011). Adhesion-GPCRs: Structure to Function (Advances in Experimental Medicine and Biology). Berlin: Springer. ISBN 978-1-4419-7912-4.
  11. Langenhan, T; Aust, G; Hamann, J (21 May 2013). "Sticky signaling--adhesion class G protein-coupled receptors take the stage". Science Signaling. 6 (276): re3. doi:10.1126/scisignal.2003825. PMID 23695165. S2CID 6958640.
  12. Araç D, Boucard AA, Bolliger MF, Nguyen J, Soltis SM, Südhof TC, Brunger AT (March 2012). "A novel evolutionarily conserved domain of cell-adhesion GPCRs mediates autoproteolysis". The EMBO Journal. 31 (6): 1364–78. doi:10.1038/emboj.2012.26. PMC 3321182. PMID 22333914.
  13. Hamann J, Koning N, Pouwels W, Ulfman LH, van Eijk M, Stacey M, Lin HH, Gordon S, Kwakkenbos MJ (October 2007). "EMR1, the human homolog of F4/80, is an eosinophil-specific receptor". European Journal of Immunology. 37 (10): 2797–802. doi:10.1002/eji.200737553. PMID 17823986.
  14. Austyn JM, Gordon S (October 1981). "F4/80, a monoclonal antibody directed specifically against the mouse macrophage". European Journal of Immunology. 11 (10): 805–15. doi:10.1002/eji.1830111013. PMID 7308288. S2CID 8426640.
  15. Gordon S, Hamann J, Lin HH, Stacey M (September 2011). "F4/80 and the related adhesion-GPCRs". European Journal of Immunology. 41 (9): 2472–6. doi:10.1002/eji.201141715. PMID 21952799.
  16. Lin HH, Faunce DE, Stacey M, Terajewicz A, Nakamura T, Zhang-Hoover J, Kerley M, Mucenski ML, Gordon S, Stein-Streilein J (May 2005). "The macrophage F4/80 receptor is required for the induction of antigen-specific efferent regulatory T cells in peripheral tolerance". The Journal of Experimental Medicine. 201 (10): 1615–25. doi:10.1084/jem.20042307. PMC 2212925. PMID 15883173.
  17. Legrand F, Tomasevic N, Simakova O, Lee CC, Wang Z, Raffeld M, Makiya MA, Palath V, Leung J, Baer M, Yarranton G, Maric I, Bebbington C, Klion AD (May 2014). "The eosinophil surface receptor epidermal growth factor-like module containing mucin-like hormone receptor 1 (EMR1): a novel therapeutic target for eosinophilic disorders". The Journal of Allergy and Clinical Immunology. 133 (5): 1439–47, 1447.e1–8. doi:10.1016/j.jaci.2013.11.041. PMC 4113341. PMID 24530099.

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