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 (36)
Antibodies (8)

By Effects:	Inhibitors (20) Agonists (2) Antagonists (2) Activator (1) Chemical (1)

Cat. No.	Product Name	Effect	Purity	Chemical Structure

HY-P9975

Theralizumab	Agonist	99.46%
Theralizumab (TGN1412) is a humanized lgG4 superagonistic anti-CD28 monoclonal antibody that directly stimulates T cells. Theralizumab can cause cytokine release syndrome (CRS). Theralizumab can be used for the research of rheumatoid arthritis.

HY-P9986

Tiragolumab	Inhibitor	99.04%
Tiragolumab is an immune checkpoint inhibitor binding to the T-cell immunoglobulin and ITIM domain (TIGIT). Tiragolumab in combination with Atezolizumab (HY-P9904) and Bevacizumab (HY-P9906) has benefit in unresectable hepatocellular carcinoma. Tiragolumab can be used to study non-small cell lung cancer (NSCLC) and melanoma.

HY-P99302

Lulizumab	Inhibitor
Lulizumab (Humanized Anti-CD28 Recombinant Antibody) is an anti-CD28 domain antibody antagonist. Lulizumab inhibits T-cell activation by selectively targeting the CD28 signal. In a sensitized non-human primate kidney transplantation model, when combined with Carfilzomib (HY-10455), Lulizumab can regulate immune cells and prolong the survival time of the graft.

HY-P99123

Anti-Mouse CD28 Antibody (37.51)
Anti-Mouse CD28 Antibody (37.51) is an agonistic agonistic CD28-specific antibody derived from the host Syrian Hamster. Anti-Mouse CD28 Antibody (37.51) partially prevents lethal graft-versus-hostdisease (GVHD) by selective depletion of alloreactive T cells in mice.

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.

HY-176265

DDS5	Inhibitor
DDS5 is a CD28 inhibitor with a k_d of 175.57 µM. DDS5 significantly inhibits CD28-CD80 interaction (IC₅₀: 332 µM). DDS5 can be used for research of immune-mediated diseases, including inflammatory bowel disease and rheumatoid arthritis.

HY-19486

UR-1505	Inhibitor
UR-1505 is a nuclear factor of activated T cells (NF-AT) inhibitor. UR-1505 can suppress CD3/CD28 induced T cell proliferation, increase p27^KIP levels, and induce G1/S cell cycle arrest. UR-1505 can also inhibit the production of IL-5 and IFN-γ in activated T cells. UR-1505 has immunomodulatory properties and can be used in the study of atopic dermatitis.

HY-102090

B7/CD28 interaction inhibitor 1		99.81%
B7/CD28 interaction inhibitor 1 (copmound 6b) is a potent B7.1-CD28 interaction inhibitor with an IC₅₀ of 50 nM.

HY-P99420

Acazicolcept	Antagonist	99.27%
Acazicolcept (ALPN-101), an Fc fusion protein, is a dual inducible T cell costimulator (ICOS)/CD28 antagonist. Acazicolcept has anti-inflammatory activities.

HY-P1698

Reltecimod	Antagonist	99.88%
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).

HY-P99293

Galiximab	Inhibitor	99.23%
Galiximab (IDEC-114) is a primatized monoclonal IgG1 antibody targeting CD80. Galiximab variable regions are primatized, and the constant regions are humanized. Galiximab induces antibody-dependent cellular cytotoxicity by blocking CD80-CD28 binding. Galiximab has antitumor activity and can induce apoptosis in tumor cells. Galiximab can be used in the research of relapsed Hodgkin lymphoma and solid tumors.

HY-P990587

FR104	Inhibitor
FR104 is a humanized antibody expressed in CHO cells that targets CD28. FR104 comprises a huIgG2 heavy chain and a huκ light chain, with a predicted molecular weight (MW) of 145 kDa. The isotype control for FR104 can be referenced as Human IgG2 kappa, Isotype Control (HY-P99002).

HY-100891

CD80-IN-3		98.08%
CD80-IN-3, a potent CD80 inhibitor, inhibits CD80/CD28 interaction with an EC₅₀ of 630 nM and a K_d of 125 nM.

HY-P990298

Anti-Mouse BTLA/CD272 Antibody (6A6)	Inhibitor
Anti-Mouse BTLA/CD272 Antibody (6A6) is an Armenian hamster-derived anti-mouse BTLA/CD272 IgG κ type antibody inhibitor. Anti-Mouse BTLA/CD272 Antibody (6A6) can be used for the researches of cancer and immunology, such as graft versus host disease (GVHD) and WF-3/Luc tumor.

HY-P990773

Venanprubart	Inhibitor	98.00%
Venanprubart is an anti-BTLA human IgG4 κ monoclonal antibody. Recommend Isotype Controls: Human IgG4 (S228P) kappa, Isotype Control (HY-P99003).

HY-P1698B

Reltecimod TFA	Chemical	99.78%
Reltecimod (AB-103) TFA is a T-cell-specific surface glycoprotein CD28 (TP44) antagonist. Reltecimod TFA has beneficial effects against different bacterial infections, their exotoxins and endotoxins, and ionizing radiation. Reltecimod TFA modulates the inflammatory response by targeting and attenuating the critical CD28/B7-2 co-stimulatory pathway, without inhibiting it. Reltecimod TFA can be used to research necrotizing soft-tissue infections (NSTIs).

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 ICOS^high 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⁺ T_Eff 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.

HY-P991038

Zadoprubart		99%
HY-P991038 is an BTLA-targeting IgG4κ type humanized antibody, the recommed isotype control is Human IgG4 (S228P) kappa, Isotype Control (HY-P99003).

HY-P990136

Anti-Monkey/Human CD28 Antibody (CD28.2)	Inhibitor
Anti-Monkey/Human CD28 Antibody (CD28.2) is a mouse-derived IgG1 κ type antibody inhibitor, targeting to monkey/human CD28. Anti-Monkey/Human CD28 Antibody (CD28.2) can block CD28 signaling. Anti-Monkey/Human CD28 Antibody (CD28.2) can be used for the research of immunology.

HY-P990865

Anti-CD28 Antibody (9.3)	Inhibitor	98.73%
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).

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CD28

CD28 Related Products (36)

Antibodies (8)

CD28 Related Products (36):