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


PD-1/Programmed death-ligand 1

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
  • HY-P9904
    Inhibitor 98.98%
    Atezolizumab (MPDL3280A) is a selective humanized monoclonal IgG1 antibody against programmed death ligand 1 (PD-L1), used for cancer research.
  • HY-P9902
    Inhibitor 99.06%
    Pembrolizumab (MK-3475) is a humanized IgG4 antibody inhibiting the programmed cell death 1 (PD-1) receptor, used in cancer immunotherapy.
  • HY-19991
    Inhibitor 99.56%
    BMS-1 is an inhibitor of the PD-1/PD-L1 protein/protein interaction (IC50 between 6 and 100 nM).
  • HY-78695
    JQ-1 (carboxylic acid)
    Inhibitor 99.49%
    JQ-1 carboxylic acid, a type of (+)-JQ-1 derivative, is a potent BET bromodomain inhibitor for downregulating PD-L1 expression on the surface of tumor cells. JQ-1 carboxylic acid can be used as a precursor to synthesize PROTACs, which targets BET bromodomains.
  • HY-P9903
    Inhibitor 98.56%
    Nivolumab is a programmed death receptor-1 (PD-1) blocking human IgG4 antibody to treat advanced (metastatic) non-small cell lung cancer.
  • HY-P9903A
    Nivolumab (anti-PD-1)
    Inhibitor 99.20%
    Nivolumab (anti-PD-1) is a programmed death receptor-1 (PD-1) blocking human IgG4 antibody to treat advanced (metastatic) non-small cell lung cancer.
  • HY-P9902A
    Pembrolizumab (anti-PD-1)
    Inhibitor 99.80%
    Pembrolizumab (anti-PD-1) is a humanized IgG4 antibody inhibiting the programmed cell death 1 (PD-1) receptor, used in cancer immunotherapy.
  • HY-P99048
    Inhibitor 98.70%
    Sintilimab (IBI308) is a fully human IgG4 monoclonal antibody that binds to PD-1, thereby blocking the interaction of PD-1 with its ligands (PD-L1 and PL-L2) and consequently helping to restore the endogenous antitumour T-cell response. Sintilimab can be used for the research of classical Hodgkin's lymphoma, non-small cell lung cancer and oesophageal cancer.
  • HY-19745
    Inhibitor 99.39%
    BMS-202 is a potent and nonpeptidic PD-1/PD-L1 complex inhibitor with an IC50 of 18 nM and a KD of 8 μM. BMS-202 binds to PD-L1 and blocks human PD-1/PD-L1 interaction. BMS-202 has antitumor activity.
  • HY-100022
    Inhibitor 99.92%
    Tomivosertib (eFT508) is a potent, highly selective, and orally active MNK1 and MNK2 inhibitor, with IC50s of 1-2 nM against both isoforms. Tomivosertib (eFT508) treatment leads to a dose-dependent reduction in eIF4E phosphorylation at serine 209 (IC50=2-16 nM) in tumor cell lines. Tomivosertib (eFT508) also dramatically downregulates PD-L1 protein abundance.
  • HY-P9919
    Inhibitor 99.60%
    Durvalumab (MEDI 4736) is an humanized anti-PD-L1 monoclonal antibody. Durvalumab (MEDI4736) completely blocks the binding of PD-L1 to both PD-1 and CD80, with IC50s of 0.1 and 0.04 nM, respectively.
  • HY-108730
    Inhibitor 99.30%
    Avelumab is a fully human IgG1 anti-PD-L1 monoclonal antibody with potential antibody-dependent cell-mediated cytotoxicity.
  • HY-B0008
    Modulator 99.81%
    Sulindac (MK-231) is an orally active nonsteroidal anti-inflammatory agent. Sulindac also is an immunomodulatory agent. Sulindac can be used for the research of arthritis of the spine, gouty arthritis and kinds of cancer including colorectal cancer (CRC) and lung cancer.
  • HY-101093
    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.
  • HY-N0242
    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.
  • HY-102011
    Inhibitor 98.37%
    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.
  • HY-19745A
    N-deacetylated BMS-202
    Inhibitor 98.13%
    N-deacetylated BMS-202 is the deacetylated of BMS-202. BMS-202 is an inhibitor of the PD-1/PD-L1 interaction, mainly used for cancer treatment.
  • HY-134884
    Inhibitor 98.86%
    INCB086550 (PD-1/PD-L1-IN-8; example 24) is a PD-1/PD-L1 inhibitor, with an IC50 <= 10 nM.
  • HY-120635
    BMS-1001 hydrochloride
    Inhibitor 98.46%
    BMS-1001 hydrochloride is an orally active human PD-L1/PD-1 immune checkpoint inhibitor. BMS-1001 hydrochloride exhibits low-toxicity in cells.
  • HY-132192
    Inhibitor 98.01%
    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.
Cat. No. Product Name / Synonyms Species Source