Benzothiopyranoindole- and pyridothiopyranoindole-based antiproliferative agents targeting topoisomerases
作者:Silvia Salerno、Valeria La Pietra、Mariafrancesca Hyeraci、Sabrina Taliani、Marco Robello、Elisabetta Barresi、Ciro Milite、Francesca Simorini、Aída Nelly García-Argáez、Luciana Marinelli、Ettore Novellino、Federico Da Settimo、Anna Maria Marini、Lisa Dalla Via
DOI:10.1016/j.ejmech.2019.01.015
日期:2019.3
relaxation activity of both topoisomerases I and II, reasonably correlated to their intercalative capacities. Cleavable assay performed with topoisomerase I revealed a significant poisoning effect for compounds 5g, 5h, 5s, and 5t. A theoretical model provided by hydrated docking calculations clarified the role of the R1-R4 substituents on the topoisomerase I poison activity, revealing a crucial role of
合成了新的苯并硫代吡喃并吲哚(5a-1)和吡啶并吡喃并吲哚(5m-t),它们在R 2 -R 4位和可质子化的R 1-二烷基氨基烷基链上具有不同的取代基组合(H,Cl,OCH 3),并通过三种方法进行了生物学分析。人肿瘤细胞系,显示出显着的抗增殖活性(GI 50值范围从0.31到6.93μM)和促凋亡作用。线性流二色性实验表明,遵循插入的结合模式,两种生色团与DNA形成分子复合物的能力。所有化合物均显示出适度的抑制拓扑异构酶I和II的松弛活性的能力,这与它们的嵌入能力合理相关。用拓扑异构酶I进行的裂解分析显示,化合物5g,5h,5s和5t具有明显的中毒作用。水合对接计算提供的理论模型阐明了R 1 -R 4的作用拓扑异构酶I上的取代基有毒活性,揭示了R 2 -OCH 3基团的关键作用。