Siglec-15 is a DAP12-associated immunoreceptor, which belongs to the immunoglobulin superfamily and SIGLEC (sialic acid binding Ig-like lectin) family. Siglecs are cell surface proteins that bind sialic acid. They are found primarily on the surface of immune cells and are a subset of the I-type lectins. Siglec-15 consisting of immunoglobulin (Ig)-like domains, transmembrane domain and a short cytoplasmic tail. Siglec-15 is that recognizes sialylated glycans and regulates osteoclast differentiation. Siglec-15 is a potential therapeutic target for osteoporosis and plays a conserved regulatory role in the immune system of vertebrates.
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Siglec-15 is a relatively new type of immune checkpoint molecule. In the process of antibody molecule screening, we used ACRO's Siglec-15 antigen. It has shown very good stability in protein-level binding experiments, and the bioactivity was also quite good which was verified in functional experiments.
The product is pretty good and the price is competitive. Besides, the delivery was fast. In particular, there is a literature introduction cited the product. It is obvious that each target has been carefully studied.
We can obtain a good inhibitory effect using this protein to verify its inhibitory on T-cells functions. S15-hFc protein can effectively inhibit the secretion of IFN-gamma stimulated by OKT3 in CD4 + T cells.