2. Signaling Pathways
  3. Immunology/Inflammation
  4. CD28

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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-P99431
    KY-1044
    		99.51%
    KY-1044 (Alomfilimab; SAR 445256) is a fully human IgG1 antibody targeting inducible costimulatory receptor (ICOS). KY-1044 depletes ICOShigh cells via antibody-dependent cellular cytotoxicity (ADCC) through the engagement of FcgRIIIa. KY-1044 act as a costimulatory molecule on cells expressing lower ICOS levels, such as CD8+ TEff cells (through FcgR-dependent clustering). KY-1044 exploit the differential expression of ICOS on T-cell subtypes to improve the intratumoral immune contexture and restore an antitumor immune response.
    KY-1044
  • HY-P990752
    Nezastomig
    Nezastomig is an anti-FOLH1/CD28 human IgG4 κ monoclonal antibody. Recommend Isotype Controls: Human IgG4 (S228P) kappa, Isotype Control (HY-P99003).
    Nezastomig
  • HY-P990793
    Anti-Mouse CD28 Antibody (D665)
    		Inhibitor
    Anti-Mouse CD28 Antibody (D665) is a kind of mouse IgG1 kappa in vivo mouse antibody, targeting to CD28. The recommend isotype control of Anti-Mouse CD28 Antibody (D665): Mouse IgG1 kappa, Isotype Control (HY-P99977).
    Anti-Mouse CD28 Antibody (D665)
  • 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.
    Maydispenoid A
  • HY-P990865
    Anti-CD28 Antibody (9.3)
    		Inhibitor
    Anti-CD28 Antibody (9.3) is a kind of mouse IgG2a chimeric antibody, targeting to human CD28. The recommend isotype control of Anti-CD28 Antibody (9.3): Mouse IgG2a kappa, Isotype Control (HY-P99978).
    Anti-CD28 Antibody (9.3)
  • HY-162810
    ICOS-IN-1
    ICOS-IN-1 (compound 9) is an inhibitor of the interaction between ICOS and ICOS-L (IC50=29.38 μM) and has activity in recognizing immune checkpoints.
    ICOS-IN-1
  • 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.
    Maydispenoid B
  • HY-P990079
    Renvistobart
    		Inhibitor
    Renvistobart is an immunoglobulin G1-κ, anti-[Homo sapiens TIGIT (T cell immunoreceptor with Ig domain and ITIM, VSIG9, VSTM3)] Homo sapiens monoclonal antibody.
    Renvistobart
  • HY-P99893
    Rozibafusp alfa
    		Inhibitor
    Rozibafusp alfa (AMG-570) is a humanized IgG2-κ monoclonal antibody targets ICOSL and BAFF. Prezalumab demonstrates beneficial activities on the arthritis of systemic lupus erythematosus. Prezalumab can be used for the research of sjogren's syndrome cutaneous lupus erythematosus, psoriasis and systemic lupus erythematosus (SLE).
    Rozibafusp alfa
  • HY-168384
    M04
    M04 is an agonist of STING. It induces the expression of the IFN reporter gene in HEK293T cells expressing wild-type human STING, but does not induce this expression in HEK293T cells expressing the R71H-G230A-R293Q (HAQ) STING variant or in mouse RAW 264.7 cells, indicating that its activity is dependent on allelic and species variations. M04 induces the production of TNF-α, IL-10, IL-1β, and IL-12p70 in human peripheral blood mononuclear cells (PBMCs). At a concentration of 50 µM, M04 stimulates dendritic cells isolated from PBMCs to express the MHC class II cell surface receptor HLA-DR and co-stimulatory molecules CD40, CD80, and CD86, and also enhances their ability to activate T cells in an ex vivo assay. M04 can be used in research on inflammatory immune diseases.
    M04
  • HY-P991183
    SAR-442257
    		Inhibitor
    SAR442257 is a humanized IgG4-S228P, kappa monoclonal antibody targeting CD38 and CD28 on multiple myeloma cells and co-stimulates CD3 and CD28 on T cells.
    SAR-442257
Cat. No. Product Name / Synonyms Application Reactivity