First Bispecific Inhibitors of the Epidermal Growth Factor Receptor Kinase and the NF-κB Activity As Novel Anticancer Agents
作者:Mostafa M. Hamed、Sarah S. Darwish、Jennifer Herrmann、Ashraf H. Abadi、Matthias Engel
DOI:10.1021/acs.jmedchem.6b01774
日期:2017.4.13
0.3 μM while retaining a potent EGFR kinase inhibition (IC50 = 60 nM). The dual inhibitors showed a higher potency than gefitinib to inhibit cell growth of EGFR-overexpressing tumor cell lines in vitro and in a xenograft model in vivo, while no signs of toxicity were observed. An investigation of the molecular mechanism of NF-κB suppression revealed that the dual inhibitors depleted the transcriptional
NF-κB转录因子的激活是用EGFR激酶抑制剂治疗后诱导的主要适应性反应,导致在非小细胞肺癌和其他肿瘤类型中出现耐药性。为了抑制这种存活机制,我们开发了新的硫脲喹唑啉衍生物,它们既是EGFR激酶又是NF-κB活性的双重抑制剂。在NF-κB报告基因分析中确定的最佳命中化合物可导致化合物9b表现出对IC的NF-κB抑制力为0.3μM的细胞IC 50,同时保留了有效的EGFR激酶抑制作用(IC 50= 60 nM)。在体外和体内异种移植模型中,双重抑制剂均显示出比吉非替尼更高的抑制EGFR过表达肿瘤细胞系细胞生长的效力,但未观察到毒性迹象。对NF-κB抑制的分子机制的研究表明,双重抑制剂耗尽了细胞核中NF-κB复合物的转录共激活因子CREB结合蛋白。