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Active Cluster Of Differentiation 200 (CD200)

MOX1; MOX2; MRC; OX-2; My033; Antigen Identified By Monoclonal Antibody MRC OX-2

ACTIVITY TEST

Cluster Of Differentiation 200 (CD200), also known as OX-2 or MOX1/MOX2, is a membrane glycoprotein belonging to the immunoglobulin superfamily. This protein is widely expressed in various cell types, including neurons, endothelial cells, certain immune cells (such as B cells, dendritic cells, T cell subsets), and various tumor cells. CD200 is a multifaceted protein with important roles in immune regulation, neuronal function, and disease pathogenesis. Besides, Cluster Of Differentiation 8a (CD8a) has been identified as an interactor of CD200, thus a functional binding ELISA assay was conducted to detect the interaction of recombinant rat CD200 and recombinant human CD8a. Briefly, CD200 was diluted serially in PBS with 0.01% BSA (pH 7.4). Duplicate samples of 100 μl were then transferred to CD8a-coated microtiter wells and incubated for 1h at 37℃. Wells were washed with PBST and incubated for 1h with anti-CD200 pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody for 1h at 37℃, wells were aspirated and washed 5 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37℃. Finally, add 50 µL stop solution to the wells and read at 450/630 nm immediately. The binding activity of recombinant rat CD200 and recombinant human CD8a was shown in Figure 1, the EC50 for this effect is 0.09 ug/mL.

USAGE

Reconstitute in 10mM PBS (pH7.4) to a concentration of 0.1-1.0 mg/mL. Do not vortex.

STORAGE

Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.

STABILITY

The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.

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Magazine Citations
Journal of Maternal-Fetal and Neonatal Medicine Amniotic fluid CD200 levels in pregnancies complicated by preterm prelabor rupture of the membranes PubMed: 23489112
Journal of Maternal-Fetal and Neonatal Medicine Amniotic fluid CD200 levels in pregnancies complicated by preterm prelabor rupture of the membranes. Pubmed: 23489112
Medicine Pre-transplant CD200 and CD200R1 concentrations are associated with post-transplant events in kidney transplant recipients Pubmed: 31517819
Molecular Biology Reports Umbilical cord-derived mesenchymal stem cell conditioned medium reverses neuronal oxidative injury by inhibition of TRPM2 activation and the JNK signaling … Pubmed:35585377
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