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 increasing 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 99.87%
    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-122081
    CPI-644
    		Inhibitor
    CPI-644 is a selective EP300/CBP bromodomain inhibitor, with an IC50 of 0.18 µM against the CBP bromodomain. CPI-644 reduces the proportion of FOXP3+ cells and downregulates the expression of LAG-3, CTLA-4 and PD-1. CPI-644 can be used in cancer-related research.
    CPI-644
  • HY-P991960
    JS007
    		Inhibitor
    JS007 is a humanized IgG1 monoclonal antibody and also a CTLA-4 binder, with a Kd of 0.21 nM for CTLA-4. JS007 blocks the interaction between CTLA-4 and B7-1. JS007 activates T cells, promotes increased IL-2 secretion, and inhibits tumor growth in CTLA-4 knock-in mouse syngeneic tumor models. JS007 is applicable to research related to cancer and advanced solid tumors.
    JS007
  • HY-P991959
    JMW-3B3
    		Inhibitor
    JMW-3B3 is a humanized IgG1λ monoclonal antibody targeting CTLA-4. JMW-3B3 selectively binds the unique C-terminal sequence of sCTLA-4 to block its immunoregulatory and immunosuppressive activity without cross-reacting with full-length CTLA-4 receptor. JMW-3B3 enhances cytokine profiles in PBMC cultures responding to lupus autoantigen-derived peptides. JMW-3B3 enhances IFN-γ production in anti-CD3 stimulated PBMC from melanoma patients at low anti-CD3 doses. JMW-3B3 can be used for the research of systemic lupus erythematosus and malignant melanoma.
    JMW-3B3
  • HY-108829A
    Abatacept (powder)
    		Inhibitor 99.01%
    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-P990789
    Anti-Mouse CTLA-4 Antibody (9H10)
    		Inhibitor 99%
    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-P990690
    Volrustomig
    		Inhibitor ≥99.0%
    Volrustomig (MEDI-5752) is a human IgG1 κ monoclonal antibody targeting CTLA4/PD1. The isotype control for Volrustomig is Human IgG1 kappa, Isotype Control (HY-P99001). Volrustomig anchors to the surface of T cells by binding PD-1, induces PD-1 internalization and degradation, and preferentially inhibits CTLA-4 on activated PD-1+ T cells. Volrustomig binds to tumor-infiltrating lymphocytes and a subset of PD-1+ B cells, enhances T cell function and IFNγ secretion. Volrustomig reduces the activation of non-tumor-infiltrating lymphocytes and exhibits manageable toxicity. Volrustomig can be used in research on various cancers, such as non-small cell lung cancer, gastric cancer, hepatobiliary cancer, and cervical cancer.
    Volrustomig
  • 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-P990042
    Gotistobart
    		Inhibitor ≥99.0%
    Gotistobart (ONC-392; BNT 316) is a humanized anti-CTLA-4 antibody with selective regulatory T cell depletion activity in the tumor microenvironment. Gotistobart can be used for the research of cancer, such as non-small cell lung cancer.
    Gotistobart
  • HY-P990256
    Anti-Mouse CTLA-4/CD152 (LALA-PG) Antibody (9D9)
    		Inhibitor 98.68%
    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-P99943
    Erfonrilimab
    		99.98%
    Erfonrilimab (KN-046) is a monoclonal antibody targeting PD-L1/CTLA-4. Erfonrilimab blocks the PD-L1 and CTLA-4 pathways, thereby regulating T cell function. Erfonrilimab enhances the secretion of IL-2 in superantigen-stimulated peripheral blood mononuclear cells. Erfonrilimab inhibits tumor growth in xenograft and double gene knock-in mouse models. Erfonrilimab can be used in research related to a variety of advanced solid tumors, including non-small cell lung cancer and nasopharyngeal carcinoma.
    Erfonrilimab
  • 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-P99714
    Lorigerlimab
    		Inhibitor
    Lorigerlimab (MGD019) is a bispecific IgG4 dual-affinity re-targeting antibody (DART). Lorigerlimab can block PD-1 and CTLA-4, and improves T-cell responses. Lorigerlimab can be used for research of metastatic castration-resistant prostate cancer (mCRPC).
    Lorigerlimab
  • 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-P990703
    Porustobart
    		99.70%
    Porustobart (HBM-4003) is a fully human anti-CTLA-4 heavy chain only antibody (HCAb). Porustobart can significantly improve the depletion of regulatory T cells (Treg cells) with high CTLA-4 expression in tumor tissues by enhancing ADCC activity. Porustobart can be used for tumor research.
    Porustobart
  • 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
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Cat. No. Product Name / Synonyms Application Reactivity