Cell surface transmembrane glycoprotein CD200 receptor 1 is a protein that in humans is encoded by the CD200R1gene.[5][6][7] CD200R1 is expressed on the surface of myeloid cells[8] and CD4+ T cells.[9] It interacts with CD200 transmembrane glycoprotein that can be expressed on variety of cells including neurons,[10] epithelial cells,[11] endothelial cells,[12] fibroblasts,[13] and lymphoid cells.[14]
CD200R1 activation regulates the expression of pro-inflammatory molecules such as tumor necrosis factor (TNF-alpha),[15] interferons, and inducible nitric oxide synthase (iNOS).[16]
Function
This gene encodes a receptor for the OX-2 membrane glycoprotein. Both the receptor and substrate are cell surface glycoproteins containing two immunoglobulin-like domains. This receptor is restricted to the surfaces of myeloid lineage cells and the receptor-substrate interaction may function as a myeloid downregulatory signal. Mouse studies of a related gene suggest that this interaction may control myeloid function in a tissue-specific manner. Alternative splicing of this gene results in multiple transcript variants.[7]
^Gentry M, Bodo J, Durkin L, Hsi ED (February 2017). "Performance of a Commercially Available MAL Antibody in the Diagnosis of Primary Mediastinal Large B-Cell Lymphoma". The American Journal of Surgical Pathology. 41 (2): 189–194. doi:10.1097/PAS.0000000000000771. PMID27879516. S2CID25206581.
^Carter DA, Dick AD (June 2004). "CD200 maintains microglial potential to migrate in adult human retinal explant model". Current Eye Research. 28 (6): 427–36. doi:10.1080/02713680490503778. PMID15512951. S2CID20846500.
Vieites JM, de la Torre R, Ortega MA, Montero T, Peco JM, Sánchez-Pozo A, Gil A, Suárez A (June 2003). "Characterization of human cd200 glycoprotein receptor gene located on chromosome 3q12-13". Gene. 311: 99–104. doi:10.1016/S0378-1119(03)00562-6. PMID12853143.
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