| 包装 | 价格(元) |
| 10mM (in 1mL DMSO) | 电议 |
| 5mg | 电议 |
| 10mg | 电议 |
| 25mg | 电议 |
| 50mg | 电议 |
| 100mg | 电议 |
Cell lines | mouse alveolar macrophage cell line(MH-S) |
Preparation Method | MH-S cells were subcultured for three times and divided into control group, lipopolysaccharide(LPS) group and LPS+ PD-1/PD-L1 inhibitor 1 (BMS-1) group. The control group was given RPMI-1640 medium equal to LPS group and LPS+BMS-1 group. When the cells in LPS group and LPS+BMS-1 group grew to 70-80% fusion, 10 ng/ml lipopolysaccharide at 37 ? stimulate in 5% CO2 humidified atmosphere at C for 24 hours, and then treat with 1 μ mol/L PD-1/PD-L1 inhibitor 1 (BMS-1) at 37 ° C for 72 hours. |
Reaction Conditions | 1 μmol/L PD-1/PD-L1 inhibitor 1 |
Applications | PD-1/PD-L1 inhibitor 1 treatment attenuated apoptosis induced by LPS exposure. The results showed that after LPS stimulation, alveolar macrophages showed a high level of PD-1 expression and increased apoptosis. After treatment with PD-1/PD-L1 inhibitor, PD-1 expression and alveolar macrophage apoptosis decreased. |
| 产品描述 | PD-1/PD-L1 inhibitor 1 is a PD-1/PD-L1 interaction inhibitor with an IC50value between 6 and 100 nM[1]. PD-1 / PD-L1 regulates cell signaling pathways and epigenetic modifications, thereby inhibiting T cell and B cell proliferation and effector functions. Lack of tumor antigen and effective antigen presentation, abnormal activation of carcinogenic pathway, IFN- γ Signal mutation, immunosuppressive tumor microenvironment (such as regulatory T cells, myeloid derived inhibitory cells, M2 macrophages, and immunosuppressive cytokines) can lead to resistance to PD-1 / PD-L1 blockade. PD-1/PD-L1 inhibitor 1 has been identified to be a potent and selective small molecule inhibitor blocking the interaction of programmed cell death protein 1 (PD-1) with its ligand protein (PD-L1)[3]. PD-1/PD-L1 inhibitor 1 was also found to act as an immunomodulator. In preclinical studies, PD-1/PD-L1 inhibitor 1 was able to block PD-1/PD-Ll interactions with an IC50value between 6 and 100 nM, which was measured by a homogenous time-resolved fluorescence (HTRF) binding assay. Thus, PD-1/PD-L1 inhibitor 1 might potentially be used for the treatment of cancer as well as infectious diseases, such as hepatitis C[2]. PD-1/PD-L1 inhibitor 1 +LPS treatment decreased PD-1 mRNA and protein expression in MH-S cells. BMS-1 treatment reduced TNF in LPS induced MH-S cells- α、 IL-1 β and IL-6, while IL-10 increased significantly. PD-1/PD-L1 inhibitor 1 pathway has anti apoptotic and anti-inflammatory effects on LPS stimulated MH-S cells[3]. PD-1/PD-L1 inhibitor 1 is a small molecule inhibitor of PD-1 delivered by coated patch. After 14 days, the new intima in the PD-1/PD-L1 inhibitor 1 coated patch was thinner than the control patch. In addition, compared with the control patch, the number of PD-1, CD3, CD68, CD45 and PCNA positive cells in the PD-1/PD-L1 inhibitor 1 coated patch was also significantly reduced, with a similar number of cut caspase control and three positive cells in the PD-1/PD-L1 inhibitor 1 coated patch. These data confirm that inhibition of PD-1 can reduce the thickness of new intima and the accumulation of inflammatory cells in the new intima formed after patch angioplasty (day 14) in rats[4].
The factors that lead to resistance to PD-1 blockade include PD-L1 expression, tumor neoantigens expression and presentation, cellular signaling pathways (PI3K, WNT, IFN-γ, MAPK), tumor microenvironment (TME) (exhausted T cell, Treg, MDSC, TAM, other chemokines), and related immune genes (IPRES). The inhibitors against target molecules are indicated, which could enhance antitumor responses in in mouse models when combined with PD-1/PD-L1 blockade[1]. References: |
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