中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
泊马度胺 | pomalidomide | 19171-19-8 | C13H11N3O4 | 273.248 |
1,3-二氧-2-( 2,6-二氧哌啶-3-基) -5-硝基异二氢吲哚 | 4-nitrothalidomide | 19171-18-7 | C13H9N3O6 | 303.231 |
New biphenyl-based chimeric compounds containing pomalidomide were developed and evaluated for their activity to inhibit and degrade the programmed cell death-1/programmed cell death- ligand 1 (PD-1/PD-L1) complex. Most of the compounds displayed excellent inhibitory activity against PD-1/PD-L1, as assessed by the homogenous time-resolved fluorescence (HTRF) binding assay. Among them, compound 3 is one of the best with an IC50 value of 60 nM. Using an ex vivo PD-1/PD-L1 blockade cell line bioassay that expresses human PD-1 and PD-L1, we show that compounds 4 and 5 significantly restore the repressed immunity in this co-culture model. Western blot data, however, demonstrated that these anti-PD-L1/pomalidomide chimeras could not reduce the protein levels of PD-L1.