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CD200R1

Products

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All listed services and products are For Research Use Only. Do Not use in any diagnostic or therapeutic applications.

Background

CD200R1 is a type I transmembrane glycoprotein in the immunoglobulin superfamily (IgSF). Binding of CD200 to CD200R1 promotes phosphorylation of the receptor cytoplasmic tail and recruitment of adaptor proteins such as Dok2 and RasGAP, thereby transmitting inhibitory signals that suppress downstream Ras/MAPK-associated activation pathways. The CD200-CD200R1 axis is an important pathway controlling microglial activation and regulating neuroinflammation within the central nervous system, with implications for neuronal protection in neurodegenerative conditions. In peripheral tissues, this receptor-ligand pair acts as an inhibitory mechanism that restrains macrophage activation and helps promote resolution of antimicrobial and wound-healing responses while limiting excessive tissue damage and fibrosis. Dysregulated CD200R1 signaling has also been implicated in inflammatory and autoimmune diseases such as multiple sclerosis, rheumatoid arthritis, inflammatory bowel disease, and systemic lupus erythematosus. In addition, various solid and hematologic tumors may upregulate CD200 and exploit this inhibitory axis to reduce antitumor immune surveillance by myeloid cells. Together, these biological observations support CD200R1 as a potential target for immune modulation, neuroinflammation research, and targeted drug development in oncology.

Fig.1 CD200-CD200R1 axis. (OA Literature)Fig.1 CD200:CD200R1 axis.1

CD200R1 Protein Function: A Non-Canonical Inhibitory Checkpoint in Immune Homeostasis

CD200R1 has a functional scope across several interrelated biological domains:

  • Myeloid Checkpoint & Inflammatory Brake: The inhibitory receptor CD200R1 is expressed on macrophages and dendritic cells, increasing the threshold of activation for Toll-like receptor (TLR) and cytokine receptor signaling. This pathway anchors Dok1/2-RasGAP complexes to limit excessive tissue destruction during the resolution of infection and immune homeostasis at mucosal and synovial barriers.
  • Guardian of Neuroimmune Homeostasis: CD200R1 on microglia in the brain enforces a surveillant rather than reactive state for these resident immune cells. Disruption of this axis activates microglial hyperproliferation, complement-mediated synapse elimination, and neuronal cell loss, making the restoration of CD200R1 a rational therapeutic target for Alzheimer's disease and multiple sclerosis.
  • Therapeutic Biomarker & Drug Target: Soluble CD200 and CD200R1 on circulating monocytes are associated with autoimmunity disease activity and poor prognosis or therapeutic response to monoclonal antibodies in leukemia and solid tumors. Blockade of CD200-CD200R1 interaction with monoclonal antibodies is an emerging class of myeloid checkpoint inhibitors that is now entering preclinical and early clinical development.

CD200R1 Membrane Protein Product

Accelerate your research of immune checkpoint and neuroinflammation research with our in-house produced recombinant CD200R1 membrane protein catalogue. The unique production challenges of CD200R1 arise from the presence of both Ig-like extracellular domains and single-pass transmembrane topology with glycosylation-dependent folding. To tackle these, we utilize appropriate expression strategies tailored for full-length or ECD formats to produce correctly folded, fully glycosylated CD200R1 constructs that retain native capacity for CD200-binding and immunoreactivity. We provide full-length membrane-bound protein, soluble extracellular domain (ECD) fragments as well as cytoplasmic tail variants. All preparations are exhaustively biophysically validated, ensuring suitability for extensive structural, ligand binding and antibody screening regimes.

CD200R1 Protein Product

Not finding the membrane protein product you need? Contact us to start your one-stop custom service!

CD200R1 Stable Cell Line Product

You need reliable, reproducible cellular models to understand the biology driven by CD200R1 and to assess potential therapeutics. Stable cell lines are provided that are engineered to express wild-type or disease-associated mouse, and rat CD200R1, as well as lines that modulate the endogenous expression of CD200R1 resulting in loss-of-function studies. These systems are developed for high-throughput ligand screening, NF-κB reporter assays, and myeloid activation profiling, and can be used in multi-phase research projects where consistent experimental outcomes with CD200-expressing target cells co-cultured with monocytes is required.

CD200R1 Stable Cell Line Product

Not finding the stable cell line product you need? Contact us to start your one-stop custom service!

CD200R1 Recombinant Antibody Product

Our products are high-affinity recombinant antibodies targeting CD200R1 that have been developed for various research applications. These antibodies are generated from advanced recombinant technologies, exhibiting much higher specificity, sensitivity, and batch-to-batch consistency than polyclonal antibodies. We offer CD200R1 recombinant antibodies that are validated in WB, ELISA, FCM, IF, ICC, IHC and IP providing the flexibility for accurate detection or quantification of CD200R1 from various samples including myeloid cell lysates, microglial preparations as well as tissue sections or reconstituted receptor-ligand complexes.

CD200R1 Recombinant Antibody Product

Not finding the recombinant antibody product you need? Contact us to start your one-stop custom service!

Product Features

  • High Purity & Activity: High purity and verified integrity for dependable downstream work.
  • Diverse Expression Systems: Choice of expression formats to match routine or specialized projects.
  • Species Reactivity: Products available for human, mouse, pig, and other species.
  • Validated Applications: Application-tested to deliver consistent signals across common lab workflows.
  • Exceptional Lot-to-Lot Consistency: Tight lot-to-lot control for reproducible performance.
  • Customization Options: Flexible customization of tags, labels, or packaging upon request.

Custom CD200R1 Membrane Protein and Antibody Discovery Services

We provide specialized custom services for discovering and developing membrane protein and antibody? With the benefit of our broad knowledge in immune checkpoint biology and myeloid cell pharmacology, we are here to support you with:

  • Custom CD200R1 Receptor Production: Tailored expression, purification, and characterization of challenging multi-domain receptor constructs.
  • Custom Antibody Development: From antigen design to antibody engineering (monoclonal, polyclonal, recombinant) for specific research applications.
  • Stable Cell Line Development: Generation of bespoke stable cell lines expressing your target of interest.
  • Functional Assay Development: Designing and executing assays to assess receptor activation and ligand.

Frequently Asked Questions (FAQ)

  1. Are your CD200R1 products for clinical or diagnostic use?

    No, all CD200R1 products/services are for research use only and not intended for clinical diagnosis, prevention, treatment or cure of any disease.

  2. Can I place bulk order or custom formulations for HTS?

    Yes. With flexible pricing tiers, we meet your academic and industrial scale-up needs. Submit your expected volume and timeline via our request-for-quotation portal, and a custom quote will be provided.

  3. Do you have a stable cell line with inducible CD200R1 expression or high level of CD200 co-expressed?

    Absolutely. The cell engineering group regularly generates tetracycline-inducible systems and CD200R1 co-expressing lines as well as uses NF-κB/STAT3 reporter constructs on how total signal pathway analysis applies.

  4. Are anti-CD200R1 antibodies able to distinguish between the fully glycosylated, surface-expressed receptor and the core-glycosylated precursor sequestered in the ER?

    Yes. Specific clones recognize glycan dependence-only epitopes that appear after Golgi maturation, generating a unique change in electrophoretic mobility by western blot. This enables the monitoring of surface delivery and trafficking fidelity directly, without the need for metabolic labeling or subcellular fractionation.

Reference
  1. Kotwica-Mojzych, Katarzyna, Barbara Jodłowska-Jędrych, and Mariusz Mojzych. "CD200: CD200R interactions and their importance in immunoregulation." International Journal of Molecular Sciences 22.4 (2021): 1602. Under Open Access license CC BY 4.0, without modification. https://doi.org/10.3390/ijms22041602
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