Introduction To CD48/SLAMF2
Drug targets a biomolecule that can directly bind to drugs and then react. Generally, the target refers to a protein, which is related to the cause of disease. The focus of the target began with focusing on tumors and then began to spread to various fields. Introduction to CD48/SLAMF2 protein is a common target in medicine.
CD48, a CD2-like molecule, is a glycosyl-phosphatidyl-inositol (GPI) -anchored protein also known as human Blast-1, or BCM 1 in mice and OX 45 in rats. CD48 is a soluble protein, measuring 40 – 45 kD in size, and is expressed on the surface of several hematopoietic cells. CD48 is a ligand for the immune receptors CD2 and CD244 (2B4). Like other CD 2 molecules, the CD 48 structure binds the distal V-like domain and the C2-like domain containing a conserved cysteine residue forming a disulfide bond. CD48 has been defined as adhesion proteins and costimulatory factors whose effects extend from the innate response to bacteria to allergic inflammation.
Function of Target CD48/SLAMF2
CD48, together with CD40, IL-4, and/or IL-10 stimulation, CD48 crosslinked by Abs causes B cell aggregation, proliferation, differentiation, and/or release of IG. In neutrophils, similar CD48 activation leads to increased cytoplasmic calcium levels. In T lymphocytes CD48, it increased CD8 + T cell proliferation in human T cells by costimulation. Meanwhile, blocking CD48 impairs T cell proliferation, IL-2 synthesis, and receptor expression, as well as T cell receptor and cytoskeletal rearrangements. The interaction between CD48 and CD2 is particularly important in T-cell activation and the adhesion between T cells and antigen-presenting cells. The interaction between CD48 and CD244 mainly affects the activation of NK cells and CD8 + T effector cells.
Gene Pathway of Target CD48/SLAMF2
When CD48 is combined with CD2, it can promote the effective recruitment of Src family protein kinases LCK and LAT (T cell activation linker protein) to the TCR / CD3 complex, thus promoting the phosphorylation of LCK and subsequent T cell activation.
CD48 binds to its ligand CD244 to form a receptor-ligand complex. The bound CD48 recruits and activates downstream signaling molecules via ITIM and ITAM within its cytoplasm. Ultimately, signaling by CD48 affects the activation, proliferation, cytotoxicity, and other immune functions of NK and T cells. This signaling process plays a key role in the immune response and immune regulation.

Fig 1: CD48 Gene Pathway. (Reference source: Pahima H, Puzzovio PG, Levi-Schaffer F. 2B4 and CD48: A powerful couple of the immune system. Clin Immunol. 2019 Jul;204:64-68.)
Alpha Lifetech Can Provide
At present, various drugs targeting CD48/SLAMF2 are constantly under development, and taking drugs alone or together with other products to treat diseases has become a new method and remarkable achievements have been made. CD48/SLAMF2 protein has shown important research value and application prospects in tumor biology, and drug research and development. With further research and technological advances, CD48/SLAMF2 protein products are also essential. Alpha Lifetech can provide CD48/SLAMF2 corresponding products and help each customer's research and development. Alpha Lifetech focuses on high-precision detection development and validation services to support drug screening and biosimilar discovery. Our detection methods, including ELISA, cell-based functional testing, and flow cytometry, have undergone rigorous sensitivity, specificity, and reproducibility testing. In addition to testing and development, our team also provides data analysis, scheme optimization, and cross-species reactivity testing to ensure reliable results.
| Catalog Number | Product Name | Product Sizes |
|---|---|---|
| ALP64656 | 50ug,100ug,500ug | |
| ALP64581 | 50ug,100ug,500ug | |
Reference
[1] Pahima H, Puzzovio PG, Levi-Schaffer F. 2B4 and CD48: A powerful couple of the immune system. Clin Immunol. 2019 Jul;204:64-68. doi: 10.1016/j.clim.2018.10.014. Epub 2018 Oct 24. PMID: 30366105.
[2] Elishmereni M, Levi-Schaffer F. CD48: A co-stimulatory receptor of immunity. Int J Biochem Cell Biol. 2011 Jan;43(1):25-8. doi: 10.1016/j.biocel.2010.09.001. Epub 2010 Sep 15. PMID: 20833258.
[3] McArdel SL, Terhorst C, Sharpe AH. Roles of CD48 in regulating immunity and tolerance. Clin Immunol. 2016 Mar;164:10-20. doi: 10.1016/j.clim.2016.01.008. Epub 2016 Jan 18. PMID: 26794910; PMCID: PMC4860950.
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