Selective Inhibitors of the Protein Tyrosine Phosphatase SHP2 Block Cellular Motility and Growth of Cancer Cells in vitro and in vivo
作者:Stefanie Grosskopf、Chris Eckert、Christoph Arkona、Silke Radetzki、Kerstin Böhm、Udo Heinemann、Gerhard Wolber、Jens-Peter von Kries、Walter Birchmeier、Jörg Rademann
DOI:10.1002/cmdc.201500015
日期:2015.5
adenocarcinoma (HPAF) cells, as indicated by a decrease in the minimum neighbor distances of cells. Moreover, 25 inhibited cell colony formation in the non‐small‐cell lung cancer cell line LXFA 526L in soft agar. Finally, 25 was observed to inhibit tumor growth in a murine xenograft model. Therefore, the novel specific compound 25 strengthens the hypothesis that SHP2 is a relevant protein target for the inhibition
酪氨酸蛋白磷酸酶SHP2(src同源区域2域磷酸酶; PTPN11)的选择性抑制剂是通过化学合成和基于结构的合理设计相结合而产生的,该酶在许多人类肿瘤中均被解除调节。制备了70种吡啶并唑-4-亚甲基肼基苯磺酸盐,并在酶分析中进行了评估。使用新生成的SHP2晶体结构在计算机上模拟了活性抑制剂的结合模式。最强大的化合物GS‐493(4 ‐ (2 Z)‐2‐ [1、3‐双(4‐硝基苯基)‐5‐oxo‐1,5‐二氢‐4 H‐吡唑‐4‐liden]]肼基苯磺酸;25)抑制SHP2,IC 50值为71±15 n M在酶检测中,对SHP2的活性比对相关SHP1和PTP1B的活性高29到45倍。在细胞培养实验中,发现化合物25可以阻断肝细胞生长因子(HGF)刺激的人胰腺癌(HPAF)细胞的上皮-间质转化,这通过最小最小细胞距离的减少来表明。此外,在软琼脂中,有25种抑制了非小细胞肺癌LXFA 526L细