Nuclear factor-erythroid 2-related factor 2 (Nrf2) regulates the expression of over 200 genes of antioxidant and phase II drug-metabolizing enzymes, and is highly expressed in non-small cell lung cancer (NSCLC). Nine derivatives of 4-(2-cyclohexylethoxy)aniline were designed. Our previous study demonstrated that IM3829 increases radiosensitivity of several lung cancer cells in vitro and in vivo. Here, biological effects of IM3829 derivatives (2a-2i) were evaluated. Compound 2g derivative effectively inhibits mRNA and protein expression of Nrf2 and HO-1. In addition, we observed over two fold enhancement in IR-induced cell death, from $2.90\pm}0.22$ to $6.02\pm}0.87$, in H1299 cancer cell-line. Among the nine derivatives, compound 2g derivative exhibited the highest enhancement of radiosensitizing effect via inhibition of Nrf2 activity.
核因子-红细胞 2 相关因子 2(Nrf2)调节 200 多个抗氧化和 II 期药物代谢酶
基因的表达,在非小细胞肺癌(NSCLC)中高度表达。我们设计了九种 4-(2-环己基乙氧基)
苯胺的衍
生物。我们之前的研究表明,IM3829 能提高几种肺癌细胞在体外和体内的放射敏感性。在此,我们评估了 IM3829 衍
生物(2a-2i)的
生物效应。化合物 2g 衍
生物能有效抑制 Nrf2 和 HO-1 的 mRNA 和蛋白表达。此外,我们观察到在H1299癌
细胞系中,IR诱导的
细胞死亡增加了两倍多,从
$2.90\pm}0.22$增加到
$6.02\pm}0.87$。在这九种衍
生物中,化合物2g衍
生物通过抑制Nrf2的活性而表现出最高的放射增敏效果。