Synthesis and Structure–Activity Relationship Studies of Small Molecule Disruptors of EWS-FLI1 Interactions in Ewing’s Sarcoma
作者:Perrer N. Tosso、Yali Kong、Lauren Scher、Ryan Cummins、Jeffrey Schneider、Said Rahim、K. Travis Holman、Jeffrey Toretsky、Kan Wang、Aykut Üren、Milton L. Brown
DOI:10.1021/jm501372p
日期:2014.12.26
EWS-FLI1 is an oncogenic fusion protein implicated in the development of Ewing’s sarcoma family tumors (ESFT). Using our previously reported lead compound 2 (YK-4-279), we designed and synthesized a focused library of analogues. The functional inhibition of the analogues was measured by an EWS-FLI1/NR0B1 reporter luciferase assay and a paired cell screening approach measuring effects on growth inhibition
EWS-FLI1是一种致癌融合蛋白,与尤因氏肉瘤家族肿瘤(ESFT)的发生有关。使用我们先前报道的先导化合物2(YK-4-279),我们设计并合成了集中的类似物库。通过EWS-FLI1 / NR0B1报告荧光素酶测定法和配对细胞筛选方法测量类似物的功能抑制,该配对细胞筛选方法测量对含有EWS-FLI1(TC32和TC71)的人细胞和不含癌蛋白的对照PANC1细胞系对生长抑制的影响。我们的数据表明,苯环上对位上的给电子基团的取代是2的类似物对抑制EWS-FLI1最有利的。化合物9u(具有二甲氨基取代)是活性最高的抑制剂,GI 50 = 0.26±0.1μM。此外,建立了生长抑制(表达EWS-FLI1的TC32细胞)和荧光素酶报道分子活性之间的相关性(R 2= 0.84)。最后,我们设计并合成了生物素化的类似物,并确定了对重组EWS-FLI1的结合亲和力(K d = 4.8±2.6μM)。