Novel indolizino[8,7-b]indole hybrids as anti-small cell lung cancer agents: Regioselective modulation of topoisomerase II inhibitory and DNA crosslinking activities
作者:Sue-Ming Chang、Wilson Christian、Ming-Hsi Wu、Tai-Lin Chen、Yi-Wen Lin、Ching-Shu Suen、Hima Bindu Pidugu、Dilip Detroja、Anamik Shah、Ming-Jing Hwang、Tsann-Long Su、Te-Chang Lee
DOI:10.1016/j.ejmech.2016.12.046
日期:2017.2
topoisomerase II (Topo II) inhibition and induction of DNA cross-linking. Intriguingly, the substituent at N11 (H or Me) plays a critical role in modulating Topo II inhibition and DNA cross-linking activities. N11-Me derivatives predispose to induce DNA crosslinks, whereas N11-H derivatives potently inhibit Topo II. Computational analysis implicates that N11-Me restrict the torsion angles of the two
合成了一系列由β-咔啉(拓扑异构酶I / II抑制)和双(羟甲基)吡咯(DNA交联)组成的双(羟甲基)吲哚并[8,7- b ]吲哚杂合物,用于抗肿瘤评估。在测试的肿瘤细胞系中,小细胞肺癌(SCLC)细胞系对新合成的化合物最敏感。这些杂种诱导细胞周期停滞在G2 / M期,触发肿瘤细胞凋亡死亡,并显示涉及拓扑异构酶II(Topo II)抑制和诱导DNA交联的多种作用机制。有趣的是,N 11的取代基(H或Me)在调节Topo II抑制和DNA交联活性中起关键作用。N 11 -Me衍生物倾向于诱导DNA交联,而N11 -H衍生物有效抑制Topo II。计算分析表明,N 11 -Me限制了吡咯上两个相邻OH的扭转角,从而有利于DNA交联。在这些杂种中,具有N 11 -H的化合物17a比顺铂和依托泊苷对异种移植模型中的SCLC H526细胞的生长更有效,但与伊立替康一样有效。