- 組換えタンパク質
- Immune Checkpoint Proteins CD Antigens
- Inhibitory Checkpoint Molecules T Cell CD Proteins Macrophage CD Proteins
- PD-1
PD-1
null Programmed cell death protein 1 (PD-1, CD279) is an inhibitory receptor of the CD28 superfamily induced on activated, exhausted and antigen-experienced T cells, B cells, NK cells and myeloid cells. PD-1 engages two ligands, PD-L1 (B7-H1/CD274), inducibly expressed on hematopoietic and parenchymal cells, and PD-L2 (B7-DC/CD273), restricted to dendritic cells and macrophages. Ligand binding phosphorylates the PD-1 cytoplasmic ITIM and ITSM motifs, recruiting SHP-2 phosphatase that attenuates TCR and CD28 proximal signaling, blunting proliferation, cytokine output, cytotoxicity and survival. This pathway physiologically limits autoimmunity and tissue damage during chronic antigen exposure, but is co-opted by tumors and chronic infections to sustain T-cell exhaustion. PD-1 blockade with pembrolizumab, nivolumab, cemiplimab and related antibodies has revolutionized oncology across dozens of cancer types; PD-1 is also implicated in primary biliary cholangitis and lupus autoimmunity.
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PD-1 組換えタンパク質 (36)
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Recombinant Protein Expression Service
- Codon Optimization
- Gene Synthesis
- Construction of Expression Vector
- Strain Screening
- Protein Expression
- Purification & QC
- Protein Delivery
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- 分子式: Human
- 分子量: Sf9 insect cells
The EpCAM/TROP1 protein serves as an important homogeneous interacting molecule that promotes direct contact between intestinal epithelial cells (IEC) and intraepithelial lymphocytes (IEL) in the mucosal epithelium. This feature helps establish an immune barrier against mucosal infections. EpCAM/TROP1 Protein, Human (His-SUMO) is the recombinant human-derived EpCAM/TROP1 protein, expressed by E. coli , with N-6*His, N-SUMO labeled tag.
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