CD200R1, also referred to as cell surface glycoprotein CD200 receptor 1, represents an isoform of CD200 receptors found on cells of the myeloid lineage. The CD200R1 inhibitory signaling pathway plays a crucial role in suppressing inflammation across a wide array of inflammatory diseases. CD200R1 signaling inhibits the production of pro-inflammatory mediators such as tumor necrosis factor, interferons, and inducible nitric oxide synthase in response to specific stimuli.
CD200R1 is a 90 kDa protein that forms a disulfide-linked homodimer . The recombinant version of this protein, derived from mouse myeloma cell lines, is often used in research to study its function and interactions . The recombinant mouse CD200R1 protein typically includes the extracellular domain of the receptor, which is essential for its binding activity .
The primary function of CD200R1 is to interact with its ligand, CD200, which is expressed on a variety of cells, including neurons, endothelial cells, and lymphocytes . This interaction is crucial for maintaining immune homeostasis and preventing excessive inflammatory responses . By binding to CD200, CD200R1 transmits inhibitory signals that downregulate the activity of myeloid cells, thereby reducing inflammation and promoting immune tolerance .
Recombinant mouse CD200R1 is widely used in immunological research to study its role in immune regulation and its potential therapeutic applications . For instance, it is used in functional assays to measure its binding ability and to investigate the signaling pathways involved in its inhibitory effects . Additionally, it is utilized in the development of therapeutic strategies aimed at modulating immune responses in various diseases, including autoimmune disorders and cancer .
The recombinant mouse CD200R1 protein is produced in mouse myeloma cell lines and is purified to a high degree of purity, typically greater than 85% as determined by SDS-PAGE under reducing conditions . The protein is often formulated in a carrier-free form, which means it does not contain bovine serum albumin (BSA), making it suitable for applications where the presence of BSA could interfere .