Recombinant Human CD52 Fc Chimera Protein, CF Summary
Siglec‑10 Fc Chimera (Catalog # 2130-SL) that produces 50% of the optimal binding response is approximately 1-5 μg/mL.
Accession # P31358
|Formulation||Lyophilized from a 0.2 μm filtered solution in PBS.|
|Reconstitution||Reconstitute at 200 μg/mL in PBS.|
|Shipping||The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.|
|Stability & Storage:||Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
CD52, also known as CAMPATH-1 antigen, HE5, and gp20, is a cell surface glycoprotein that can be targeted to induce immune suppression by complement-mediated cell lysis (1, 2). Mature human CD52 is a 12 amino acid peptide that is tethered to the cell surface with a GPI linkage (3). It carries a large tissue-specific carbohydrate structure which increases the molecular weight of CD52 to 15-20 kDa (3-5). CD52 is expressed on lymphocytes, monocytes, monocycte-derived dendritic cells, eosinophils, and neutrophils (6-8), as well as on mature spermatozoa and epithelial cells lining the male genital tract (5, 9, 10). It protects sperm against anti-sperm antibodies by binding to C1q and inhibiting complement activation (11). CD52 ligation on CD4+ T cells induces a suppressive population of cells that release soluble CD52 which then binds to Siglec-10 (12-14). This interaction inhibits the proliferation of activated T cells and the cytotoxic function of autoimmune CD8+ T cells in type 1 diabetes (13).
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