Fluorescence polarization-based assays for detecting compounds binding to inactive c-Jun N-terminal kinase 3 and p38α mitogen-activated protein kinase
作者:Francesco Ansideri、Andreas Lange、Ahmed El-Gokha、Frank M. Boeckler、Pierre Koch
DOI:10.1016/j.ab.2016.02.018
日期:2016.6
Two fluorescein-labeled pyridinylimidazoles were synthesized and evaluated as probes for the binding affinity determination of potential kinase inhibitors to the c-Jun N-terminal kinase 3 (JNK3) and p38α mitogen-activated protein kinase (MAPK). Fluorescence polarization (FP)-based competition binding assays were developed for both enzymes using 1-(3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-
合成了两种荧光素标记的吡啶基咪唑并用作探针,用于测定潜在的激酶抑制剂与c-Jun N端激酶3(JNK3)和p38α促丝裂原激活的蛋白激酶(MAPK)的结合亲和力。使用1-(3',6'-dihydroxy-3-oxo-3H-spiro [isobenzofuran-1,9'-xanthen] -5-yl)-开发了两种酶的基于荧光偏振(FP)的竞争结合测定法3-(4-((4-(4-(4-氟苯基)-2-(甲硫基)-1H-咪唑-5-基)吡啶-2--2-基)氨基)苯基)硫脲(5)作为FP探针(JNK3:Kd = 3.0nM;p38αMAPK:Kd = 5.7nM)。用已知的JNK3和p38αMAPK抑制剂进行测定的验证表明,两种FP测定均与活性测定收到的抑制数据非常相关。这,