Benzothiopyranoindole-Based Antiproliferative Agents: Synthesis, Cytotoxicity, Nucleic Acids Interaction, and Topoisomerases Inhibition Properties
作者:Lisa Dalla Via、Sebastiano Marciani Magno、Ornella Gia、Anna Maria Marini、Federico Da Settimo、Silvia Salerno、Concettina La Motta、Francesca Simorini、Sabrina Taliani、Antonio Lavecchia、Carmen Di Giovanni、Giuseppe Brancato、Vincenzo Barone、Ettore Novellino
DOI:10.1021/jm900627v
日期:2009.9.10
Novel benzo[3′,2′:5,6]thiopyrano[3,2-b]indol-10(11H)-ones 1a−v were synthesized and evaluated for their antiproliferative activity in an in vitro assay of human tumor cell lines (HL-60 and HeLa). Compounds 1e−v, substituted at the 11-position with a basic side chain, showed a significant ability to inhibit cell growth with IC50 values in the low micromolar range. Linear dichroism measurements showed
合成了新型苯并[3',2':5,6]硫代吡喃并[3,2 - b ]吲哚-10(11 H)-酮1a - v,并在体外人类肿瘤细胞实验中评估了它们的抗增殖活性线(HL-60和HeLa)。在11位上被碱性侧链取代的化合物1e - v显示出显着的抑制细胞生长的能力,其IC 50值在低微摩尔范围内。线性二色性测量表明,所有11-二烷基氨基烷基取代的衍生物1e - v充当DNA嵌入剂。荧光滴定法证明了它们在与富含A-T的区域结合方面的特异性,并且对活性最高的衍生物(1e,1i,1p)进行了分子建模研究,以详细表征这些苯并硫吡喃并吲哚与DNA的络合机理。弛豫测定法证明了拓扑异构酶II活性的剂量依赖性抑制作用,该抑制作用与抗增殖能力一致。最后,对于最具细胞毒性的衍生物1e,还显示了拓扑异构酶II的中毒作用,以及对拓扑异构酶I介导的舒张作用的弱抑制作用。