Synthesis of phenanthridinium–bis-nucleobase conjugates, interactions with poly U, nucleotides and in vitro antitumour activity of mono- and bis-nucleobase conjugates
作者:L.-M. Tumir、I. Piantanida、M. Žinić、I. Juranović Cindrić、Z. Meić、M. Kralj、S. Tomić
DOI:10.1016/j.ejmech.2006.05.005
日期:2006.10
Novel bis-nucleobase-phenanthridinium conjugates were synthesised and their aqueous solutions spectroscopically characterised. Bis-adenine conjugate revealed in aqueous solutions significantly more pronounced intramolecular aromatic stacking interactions than bis-uracil analogue. In contrast with previously reported poly A recognition by bis-uracil conjugate, recognition of complementary nucleotides
合成了新型双核碱基-菲啶鎓共轭物,并对其水溶液进行了光谱表征。与双-尿嘧啶类似物相比,双-腺嘌呤共轭物在水溶液中显示出明显更明显的分子内芳族堆积相互作用。与先前报道的通过双-尿嘧啶缀合物识别的poly A相反,由于大量水对核碱基之间的氢键的强烈干扰,未观察到互补核苷酸和poly U的识别。对六种人类细胞系的抗癌活性进行筛选后发现,将碱基碱基束缚到菲啶鎓部分上可降低菲啶鎓的抗增殖能力。然而,在单核碱基缀合物中,发现腺嘌呤衍生物是最具选择性的一种(MiaPaCa-2,Hep-2)。