Synthesis, DNA binding and cleavage activity of macrocyclic polyamines bearing mono- or bis-acridine moieties
摘要:
Two acridine-pendant cyclen (1,4,7,10-tetraazacyclododecane) derivatives 1 and 2 were synthesized, and their DNA interactions have been systematically investigated by UV absorption, fluorescence titration, viscosity measurement, DNA melting and gel electrophoresis experiments. The results showed that acridine-cyclen derivatives could bind to DNA in intercalative mode, and bis-acridine 2 has higher DNA binding ability than that of mono-acridine 1. Moreover, both compounds exhibited preferential interactions with G-rich DNA sequences. Their copper(II) complexes could cleave DNA without the existence of other additives under physiological conditions through an oxidative pathway. (C) 2010 Elsevier Masson SAS. All rights reserved.
Synthesis, DNA binding and cleavage activity of macrocyclic polyamines bearing mono- or bis-acridine moieties
摘要:
Two acridine-pendant cyclen (1,4,7,10-tetraazacyclododecane) derivatives 1 and 2 were synthesized, and their DNA interactions have been systematically investigated by UV absorption, fluorescence titration, viscosity measurement, DNA melting and gel electrophoresis experiments. The results showed that acridine-cyclen derivatives could bind to DNA in intercalative mode, and bis-acridine 2 has higher DNA binding ability than that of mono-acridine 1. Moreover, both compounds exhibited preferential interactions with G-rich DNA sequences. Their copper(II) complexes could cleave DNA without the existence of other additives under physiological conditions through an oxidative pathway. (C) 2010 Elsevier Masson SAS. All rights reserved.