2. Signaling Pathways
  3. Immunology/Inflammation
  4. CTLA-4

CTLA-4

Cytotoxic T-lymphocyte-associated protein 4; CD152

Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), also known as CD152, is an inhibitory receptor belonging to the CD28 immunoglobulin subfamily. CTLA-4 is expressed primarily by T cells. The ligands of CTLA-4, CD80 and CD86, are typically found on the surface of antigen-presenting cells and can either bind CD28 or CTLA-4. The interactions of the ligands with CTLA-4 serve to inhibit T cell responses. Because of its dampening effect, CTLA-4 is a crucial regulator of T-cell homeostasis and self-tolerance. The mechanisms by which CTLA-4 exerts its inhibitory function can be categorized as either cell-intrinsic (affects the CTLA-4 expressing T-cell) or cell-extrinsic (affects secondary cells). CTLA-4 is well recognized as a key immune checkpoint and has gained significant momentum as a therapeutic target in the field of autoimmunity and cancer.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-108829
    Abatacept
    		≥99.0%
    Abatacept (CTLA4lg) is a soluble fusion protein consisting of the extra-cellular domain of human CTLA4 and a fragment of the Fc portion of human IgG1 (hinge and CH2 and 3 domains). Abatacept is a selective T-cell co-stimulation modulator and a protein agent for the autoimmune diseases.
    Abatacept
  • HY-P9901
    Ipilimumab
    		Inhibitor 99.88%
    Ipilimumab is a fully human monoclonal antibody IgG1κ that blocks the inhibitory receptor cytotoxic T lymphocyte antigen 4 (CTLA-4) on T cells. Ipilimumab can be used in unresectable or metastatic melanoma (MM) studies.
    Ipilimumab
  • HY-P9918
    Tremelimumab
    		99.50%
    Tremelimumab (Ticilimumab) is a fully human monoclonal antibody specific for cytotoxic T-lymphocyte antigen-4 (CTLA-4) and can be used for metastatic melanoma research.
    Tremelimumab
  • HY-P99132
    Anti-Mouse CTLA-4 Antibody (9D9)
    		Inhibitor ≥98.0%
    Anti-Mouse CTLA-4 Antibody (9D9) is an anti-mouse CTLA-4 IgG2b monoclonal antibody. Anti-Mouse CTLA-4 Antibody (9D9) can bind to CTLA-4 and block its binding to B7. Anti-Mouse CTLA-4 Antibody (9D9) enhances T cell function by regulating the ratio of CD8+ T cells to regulatory T cells (Tregs). Anti-Mouse CTLA-4 Antibody (9D9) can be used for research on cancer such as colon cancer and melanoma.
    Anti-Mouse CTLA-4 Antibody (9D9)
  • HY-P99117
    Cadonilimab
    		Inhibitor 99.29%
    Cadonilimab (AK104) is a humanized tetravalent IgG1 bispecific antibody targeting PD1/CTLA4. Cadonilimab blocks both PD-1 and CTLA-4 pathways, thereby relieving their corresponding immunosuppressive effects and reversing tumor specific T cell exhaustion. Cadonilimab significantly downregulates Fc-mediated effector functions, including antibody-dependent cell-mediated cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP), complement dependent cytotoxicity (CDC). Cadonilimab can be used for research of metastatic cervical cancer, as well as other malignancies such as gastric cancer, GEJ adenocarcinoma and non-small cell lung cancer (NSCLC).
    Cadonilimab
  • HY-P991139
    Futermestotug
    		Inhibitor
    Futermestotug is a humanized immunoglobulin G1-κ monoclonal antibody targeting human cytotoxic T-lymphocyte associated protein 4 (CTLA4). Futermestotug is promising for research of various malignant tumors.
    Futermestotug
  • HY-P991566
    KD6001
    		Inhibitor
    KD6001 is a humanized IgG1κ monoclonal antibody, targeting CTLA4. KD6001 significantly disrupts CTLA-4 interactions with CD80 (IC50: 16 ng/mL) and CD86. KD6001 enhances IL-2 and IFNγ expression in PHA-activated human lymphocytes and exhibits potent antitumor effects. KD6001 effectively inhibits tumor growth in MC38, B16, and Hepa1-6 tumor mice model. KD6001 can be used for cancers research, such as advanced melanoma, hepatocellular carcinoma and liver cancer.
    KD6001
  • HY-108829A
    Abatacept (powder)
    		Inhibitor
    Abatacept (CTLA4lg; BMS-188667) powder is a soluble fusion protein consisting of the extra-cellular domain of human CTLA4 and a fragment of the Fc portion of human IgG1 (hinge and CH2 and 3 domains). Abatacept powder is a selective T-cell co-stimulation modulator and a protein agent for the autoimmune diseases.
    Abatacept (powder)
  • HY-P99166
    Vudalimab
    		Inhibitor ≥99.0%
    Vudalimab is a potent dual PD-1 and CTLA-4 inhibitor as a fully humanized bispecific monoclonal antibody. Vudalimab targets immune checkpoint receptors PD-1 and CTLA-4 and promotes tumor-selective T-cell activation.
    Vudalimab
  • HY-P99484
    Botensilimab
    		Inhibitor 99.00%
    Botensilimab (AGEN 1181), a human anti-cytotoxic T-lymphocyte antigen 4 (CTLA-4) monoclonal antibody, is an innate and adaptive immune activator. Botensilimab can be used for the research of cancer.
    Botensilimab
  • HY-P990042
    Gotistobart
    		Inhibitor ≥99.0%
    Gotistobart (ONC-392) is a humanized anti-CTLA-4 antibody that confers immunotherapeutic effect by selective depletion of regulatory T cells (Treg) in the tumor microenvironment.
    Gotistobart
  • HY-19916A
    Lisavanbulin dihydrochloride
    		Inhibitor 99.74%
    Lisavanbulin (BAL-101553) dihydrochloride is the prodrug of the microtubule targeting agent Avanbulin (BAL 27862) (HY-106008). Lisavanbulin dihydrochloride exhibits antitumor activity, especially in tumors that express high levels of end-binding protein 1. Lisavanbulin dihydrochloride has ability to target tumor cell proliferation and affects the tumor microenvironment by reducing tumor microvasculature. Lisavanbulin dihydrochloride is also a spindle assembly checkpoint activator, agonistic anti-CD40 antibody, and double immune checkpoint blockade (anti-PD-1 and anti-CTLA-4). Lisavanbulin dihydrochloride induces cell cycle arrest and subsequent death or aberrant chromosome segregation. Lisavanbulin dihydrochloride can be studied in research for diffuse large B cell lymphoma (DLBCL) and glioblastoma.
    Lisavanbulin dihydrochloride
  • HY-P99514
    Zalifrelimab
    		Inhibitor 98.28%
    Zalifrelimab (AGEN1884) is a fully human IgG1 monoclonal antibody targeting CTLA-4 (CTLA-4). Zalifrelimab antagonizes the inhibitory checkpoints of immune cell activation regulated by CTLA-4 signaling.
    Zalifrelimab
  • HY-19916
    Lisavanbulin
    		Inhibitor 99.24%
    Lisavanbulin (BAL-101553) is the prodrug of the microtubule targeting agent Avanbulin (BAL 27862) (HY-106008). Lisavanbulin is a BBB-penetrant and orally active antitumor agent, especially in tumors that express high levels of end-binding protein 1. Lisavanbulin has ability to target tumor cell proliferation and affects the tumor microenvironment by reducing tumor microvasculature. Lisavanbulin is also a spindle assembly checkpoint activator, agonistic anti-CD40 antibody, and double immune checkpoint blockade (anti-PD-1 and anti-CTLA-4). Lisavanbulin induces cell cycle arrest and subsequent death or aberrant chromosome segregation. Lisavanbulin can be studied in research for diffuse large B cell lymphoma (DLBCL) and glioblastoma.
    Lisavanbulin
  • HY-P99809
    Quavonlimab
    		Inhibitor ≥99.0%
    Quavonlimab (MK-1308) is a novel anti-CTLA-4 antibody.
    Quavonlimab
  • HY-P990256
    Anti-Mouse CTLA-4/CD152 (LALA-PG) Antibody (9D9)
    		Inhibitor
    Anti-Mouse CTLA-4/CD152 (LALA-PG) Antibody (9D9) is a mouse-derived IgG2a κ type antibody inhibitor targeting to mouse CTLA-4/CD152. Anti-Mouse CTLA-4/CD152 (LALA-PG) Antibody (9D9) contains a LALA-PG mutation in the Fc fragment rendering it unable to bind to endogenous Fcγ receptors. Anti-Mouse CTLA-4/CD152 (LALA-PG) Antibody (9D9) can be used for the researches of cancer and immunology, such as colon.
    Anti-Mouse CTLA-4/CD152 (LALA-PG) Antibody (9D9)
  • HY-P99540
    Tuvonralimab
    		Inhibitor 99.14%
    Tuvonralimab (PSB-205) is a humanized IgG1 monoclonal antibody against CTLA-4. Tuvonralimab can be used in the research of tumors. Recommend Isotype Controls: Human IgG1 kappa, Isotype Control (HY-P99001).
    Tuvonralimab
  • HY-P990789
    Anti-Mouse CTLA-4 Antibody (9H10)
    		Inhibitor
    Anti-Mouse CTLA-4 Antibody (9H10) is a kind of syrian hamster IgG antibody inhibitor, targeting to CTLA-4. Anti-Mouse CTLA-4 Antibody (9H10) binds mouse CTLA-4 and blocks the interaction between CTLA-4 and its ligand. Anti-Mouse CTLA-4 Antibody (9H10) shows potent anti-tumor effect in various tumor models, such as breast and colon cancer.
    Anti-Mouse CTLA-4 Antibody (9H10)
  • HY-P99943
    Erfonrilimab
    		99.98%
    Erfonrilimab (KN-046) is an anti-PDL1/CTLA-4 monoclonal antibody.
    Erfonrilimab
  • HY-P99844
    Davoceticept
    Davoceticept (ALPN-202; CD80 vIgD-Fc) is a variant CD80 vIgD-Fc fusion protein targeting CTLA-4 and PD-L1. Davoceticept consists of the (1-107) fragment of CD80 linked to IGHG1 Fc via a peptidyl linker. The expression system of Davoceticept is usually CHO (Chinese Hamster Ovary) cells.
    Davoceticept
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity