CD28

CD28, a cell surface glycoprotein receptor, predominantly expressed on activated T cells, belongs to the Ig superfamily and provides a critical co-stimulatory signal. Its ligands, CD80 and CD86, are typically found on the surface of antigen-presenting cells and can either bind CD28 or CTLA-4. CD28 interacts with the CD80 dimer with relatively high affinity and the CD86 monomer with lower affinity, mediating T cell co-stimulation in conjunction with T cell receptor (TCR) signals. CD28 drives critical intracellular biochemical events including unique phosphorylation and transcriptional signaling, metabolism, and the production of key cytokines, chemokines, and survival signals that are essential for long-term expansion and differentiation of T cells. Most importantly, treatment of mice with a soluble CD28 antagonist induced antigen-specific tolerance that prevented the progression of autoimmune diseases and organ graft rejection.

CD28 相关产品（3）

货号	产品名	Cas	产品描述
PL01345	B7/CD28 interaction inhibitor 1	635324-72-0	B7/CD28 interaction inhibitor 1 (copmound 6b) 是一种有效的 B7.1-CD28 相互作用抑制剂，IC50 为 50 nM。
PL01148	CD80-IN-3	486449-65-4	CD80-IN-3 是有效的 CD80 抑制剂，抑制 CD80/CD28 互作的 EC50 值为 630 nM，Kd 值为 125 nM。
PL06097	Theralizumab	906068-56-2	Theralizumab (TGN1412) 是一种超级激动剂抗 CD28 单克隆抗体，可直接刺激 T 细胞。Theralizumab 可用于类风湿性关节炎的研究。