2. Signaling Pathways
  3. Immunology/Inflammation
  4. PD-1/PD-L1

PD-1/PD-L1

PD-1/Programmed death-ligand 1

PD-1/PD-L1

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Programmed death-1 (PD-1) is a cell surface receptor that functions as a T cell checkpoint and plays a central role in regulating T cell exhaustion. PD-1 is activated by the engagement of its ligands PDL-1 or PDL-2. PD-1 receptor delivers inhibitory checkpoint signals to activated T cells upon binding to its ligands PD-L1 and PD-L2 expressed on antigen-presenting cells and cancer cells, resulting in suppression of T-cell effector function and tumor immune evasion. Inhibiting the programmed cell death-1 (PD-1)/programmed cell death-ligand 1 (PD-L1) pathway is an attractive strategy for tumor immunotherapy.

PD-1 is expressed on activated T cells, B cells, monocytes, dendritic cells (DCs), regulatory T cells (Tregs), and natural killer T cells (NKT). It is a member of a family of immunoglobulin domain (Ig) co-receptors that modify the outcome of activation of the T cell receptor by an antigen-presenting cell (APC) or infected target cell. PD-L1 is widely and constitutively expressed on both hematopoietic and nonhematopoietic cells; e.g., naive T and B cells, vascular endothelial cells, and pancreatic islet cells, whereas PD-L2 is exclusively and inducibly expressed on professional APCs.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-P9997
    Rosnilimab
    		Inhibitor 99.19%
    Rosnilimab is a humanized IgG1-κ antibody targeting to PD-1.
    Rosnilimab
  • HY-101093
    CA-170
    		Inhibitor 99.39%
    CA-170 is an orally delivered dual inhibitor of VISTA and PD-L1. CA-170 exhibits potent rescue of proliferation and effector functions of T cells inhibited by PD-L1/L2 and VISTA with selectivity over other immune checkpoint proteins as well as a broad panel of receptors and enzymes.
    CA-170
  • HY-P99048
    Sintilimab
    		Inhibitor 98.70%
    Sintilimab (IBI308) is a safe and effectivel humanized IgG4 monoclonal antibody that binds to PD-1 with a KD value of 74 pM. Sintilimab blocks the interaction of PD-1 with its ligands (PD-L1 and PL-L2), consequently helping to restore the endogenous antitumour T-cell response. Sintilimab combined with prebiotics inhibits tumor volume and regulates immune cell subpopulation balance in lung adenocarcinoma mice. Sintilimab can be used for the research of classical Hodgkin's lymphoma, non-small cell lung cancer and oesophageal cancer.
    Sintilimab
  • HY-134884
    INCB086550
    		Inhibitor 99.80%
    INCB086550 is a potent, oral, small-molecule PD-L1 inhibitor with IC50s value of 3.1, 4.9 and 1.9 nM for human, cynomolgus, and rat, respectively. INCB086550 promotes the dimerization of cell-surface PD-L1 and induces PD-L1 entry into Golgi vesicles then traffick to the nucleus. INCB086550 can be used for multiple cancers research.
    INCB086550
  • HY-116274
    BMS-8
    		Inhibitor ≥98.0%
    BMS-8 inhibits the PD-1/PD-L1 interaction with IC50 of 7.2 μM. BMS-8, binds directly to PD-L1 and induces formation of PD-L1 homodimers, which in turn prevents the interaction with PD-1.
    BMS-8
  • HY-102011
    BMS-1166
    		Inhibitor 99.41%
    BMS-1166 is a potent PD-1/PD-L1 immune checkpoint inhibitor. BMS-1166 induces dimerization of PD-L1 and blocks its interaction with PD-1, with an IC50 of 1.4 nM. BMS-1166 antagonizes the inhibitory effect of PD-1/PD-L1 immune checkpoint on T cell activation.
    BMS-1166
  • HY-N0242
    Fraxinellone
    		Inhibitor 99.99%
    Fraxinellone is isolated from the root bark of the Rutaceae plant, Dictamnus dasycarpus. Fraxinellone is a PD-L1 inhibitor and inhibits HIF-1α protein synthesis without affecting HIF-1α protein degradation. Fraxinellone has the potential to be a valuable candidate for cancer treatment by targeting PD-L1.
    Fraxinellone
  • HY-P99100
    Visugromab
    		98.40%
    Visugromab (CTL-002) is a GDF-15 neutralizing IgG4 mAb. Visugromab has synergistic anticancer activity with the anti-PD1 antibody Nivolumab (HY-P9903) and can effectively act on PD-1/PD-L1 relapsed/refractory metastatic solid tumors.
    Visugromab
  • HY-P9978
    Toripalimab
    		Inhibitor 99.30%
    Toripalimab is the first domestic anti-tumor PD-1 antibody in China. Toripalimab is a selective, recombinant, humanized monoclonal antibody against PD-1. Toripalimab is able to bind to PD-1 and block the interaction with its ligands. Toripalimab has exhibited primary anti-tumor effects in tumors such as melanoma, lung cancer, digestive tract tumors, hepatobiliary and pancreatic tumors, neuroendocrine neoplasms, nasopharyngeal carcinoma and urothelial carcinoma.
    Toripalimab
  • HY-P3440
    WL12
    		99.99%
    WL12 is a specifically targeting programmed death ligand 1 (PD-L1) binding peptide. WL12 can be radiolabeled by different radionuclides, generating radiotracers, which can assess the tumor PD-L1 expression.
    WL12
  • HY-P99115
    Envafolimab
    		Inhibitor 99.31%
    Envafolimab (ASC 22; KN 035) is a recombinant protein of a humanized single-domain anti- PD-L1 antibody. Envafolimab is created by a fusion of the of anti-PD-L1 domain with Fc fragment of human IgG1 antibody. Envafolimab blocks interaction between PD-L1 and PD-1 with an IC50 value of 5.25?nM. Envafolimab has the potential for the research of solid tumors.
    Envafolimab
  • HY-139781
    PD-L1-IN-1
    		Inhibitor 98.01%
    PD-L1-IN-1 is a potent PD-L1 inhibitor with an IC50 of 115 nM. PD-L1-IN-1 strongly binds with the PD-L1 protein and challenged it in a co-culture of PD-L1 expressing cancer cells (PC9 and HCC827 cells) and peripheral blood mononuclear cells enhanced antitumor immune activity of the latter. PD-L1-IN-1 significantly increased interferon γ release and apoptotic induction of cancer cells, with low cytotoxicity in healthy cells.
    PD-L1-IN-1
  • HY-P99117
    Cadonilimab
    		Inhibitor
    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-P99203
    Cemiplimab
    		Inhibitor 99.89%
    Cemiplimab (Anti-Human PD-1) is a high-affinity programmed death receptor-1 (PD-1) monoclonal IgG4 antibody that blocks PD-1/PD-L1-mediated T-cell suppression. Cemiplimab is commonly used in squamous cell skin cancer research.
    Cemiplimab
  • HY-N0596
    Panaxadiol
    		Inhibitor ≥98.0%
    Panaxadiol (20(R)-Panaxadiol) is an orally active HIF-1α/STAT3 inhibitor. Panaxadiol can suppress HIF-1α and STAT3 then lead to downregulation of programmed cell death-ligand 1 (PD-L1) expression. Panaxadiol shows anticancer, cardioprotective, anti-arrhythmic, and antioxidative activities.
    Panaxadiol
  • HY-P10091
    CD24/Siglec-10 blocking peptide, CSBP
    		Inhibitor 99.59%
    CD24/Siglec-10 blocking peptide, CSBP can not only block the interaction of CD24/Siglec-10 but also PD-1/PD-L1. CD24/Siglec-10 blocking peptide, CSBP can induce the phagocytosis of tumor cell.
    CD24/Siglec-10 blocking peptide, CSBP
  • HY-138407
    Evixapodlin
    		Inhibitor 98.14%
    Evixapodlin (GS-4224) is a human PD-1/PD-L1 protein/protein interaction inhibitor with an IC50 of 0.213 nM. Evixapodlin has anticancer and antiviral functions.
    Evixapodlin
  • HY-132192
    PD-1/PD-L1-IN-9
    		Inhibitor 98.79%
    PD-1/PD-L1-IN-9 is a potent and orally active inhibitor of PD-1/PD-L1 interaction, with an IC50 of 3.8 nM. PD-1/PD-L1-IN-9 can enhance the killing activity of tumor cells by immune cells. PD-1/PD-L1-IN-9 also exhibits significant in vivo antitumor activity in a CT26 mouse model.
    PD-1/PD-L1-IN-9
  • HY-P99118
    Serplulimab
    		Inhibitor 99.30%
    Serplulimab (HLX 10) is humanized monoclonal anti-PD-1 antibody. Serplulimab can be used in research of small cell lung cancer.
    Serplulimab
  • HY-P99419
    Acasunlimab
    		Inhibitor 99.90%
    Acasunlimab (GEN1046) is a bispecific antibody (bsAb) targeting PD-L1 and 4-1BB. Acasunlimab enhances T-cell and NK-cell function through conditional 4-1BB stimulation while constitutively blocking the PD-1/PD-L1 inhibitory axis. Acasunlimab can be used in research of cancer.
    Acasunlimab
Cat. No. Product Name / Synonyms Application Reactivity