1. Immunology/Inflammation
  2. 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 Related Products (12):

Cat. No. Product Name Effect Purity
  • HY-100891
    CD80-IN-3 98.22%
    CD80-IN-3, a potent CD80 inhibitor, inhibits CD80/CD28 interaction with an EC50 of 630 nM and a Kd of 125 nM.
  • HY-P99123
    Anti-Mouse CD28 Antibody
    Anti-Mouse CD28 Antibody is an anti-mouse CD28 IgG antibody inhibitor derived from the host Syrian Hamster.
  • HY-102090
    B7/CD28 interaction inhibitor 1 99.68%
    B7/CD28 interaction inhibitor 1 (copmound 6b) is a potent B7.1-CD28 interaction inhibitor with an IC50 of 50 nM[1].
  • HY-P9975
    Theralizumab (TGN1412) is a superagonist anti-CD28 monoclonal antibody that directly stimulates T cells. Theralizumab can be used for the research of rheumatoid arthritis[1][2].
  • HY-P99961
    Tifcemalimab Inhibitor
    Tifcemalimab (JS004) is a humanized anti-BTLA (B and T lymphocyte attenuation factor) monoclonal antibody. Tifcemalimab blocks the interaction of HVEM-BTLA by binding to BTLA, and thus blocks the inhibitory signaling pathway mediated by BTLA. Tifcemalimab can be used in research of cancer[1].
  • HY-P99420
    Acazicolcept Antagonist
    Acazicolcept (ALPN-101), an Fc fusion protein, is a dual inducible T cell costimulator (ICOS)/CD28 antagonist. Acazicolcept has anti-inflammatory activities[1].
  • HY-P99302
    Lulizumab Inhibitor
    Lulizumab (Humanized Anti-CD28 Recombinant Antibody) is a selective CD28 blockade, Lulizumab prevents T cell activation by selectively targeting CD28 signaling[1].
  • HY-P99717
    Lulizumab pegol Antagonist
    Lulizumab pegol (BMS-931699) is an anti-CD28 antibody antagonist. Lulizumab pegol effectively inhibits T-cell proliferation and it can be used for the reseach of kidney transplantation and autoimmunity disease[1].
  • HY-N10445
    Maydispenoid A
    Maydispenoid A is a potent immunosuppressor. Maydispenoid A can inhibit anti-CD3/anti-CD28 mAbs activated and lipopolysaccharide activated murine splenocyte proliferation[1].
  • HY-P99293
    Galiximab Inhibitor
    Galiximab (IDEC 114) is a primatized immunoglobulin G1 (IgG1) lambda monoclonal antibody directed against the CD80 antigen. Galiximab has variable regions are primatized (cynomologous monkeys), and the constant regions are human. Galiximab can be used in research of B-cell lymphoma[1].
  • HY-P1698
    Reltecimod Antagonist
    Reltecimod (AB-103) is a T-cell-specific surface glycoprotein CD28 (TP44) antagonist. Reltecimod has beneficial effects against different bacterial infections, their exotoxins and endotoxins, and ionizing radiation. Reltecimod modulates the inflammatory response by targeting and attenuating the critical CD28/B7-2 co-stimulatory pathway, without inhibiting it. Reltecimod can be used to research necrotizing soft-tissue infections (NSTIs)[1][2].
  • HY-N10446
    Maydispenoid B
    Maydispenoid B is a potent immunosuppressor. Maydispenoid B can inhibit anti-CD3/anti-CD28 mAbs activated and lipopolysaccharide activated murine splenocyte proliferation[1].