Synthesis, photochemistry, DNA cleavage/binding and cytotoxic properties of fluorescent quinoxaline and quinoline hydroperoxides
作者:Nilanjana Chowdhury、Moumita Gangopadhyay、S. Karthik、N.D. Pradeep Singh、Mithu Baidya、S.K. Ghosh
DOI:10.1016/j.jphotobiol.2013.11.010
日期:2014.1
achieved on irradiation of newly synthesized hydroperoxides by UV light (⩾350 nm). Both hydroxyl radicals and singlet oxygen were identified as reactive oxygen species (ROS) responsible for the DNA cleavage. Further, we showed quinoline hydroperoxide binds to ct-DNA via intercalative mode. In vitro biological studies revealed that quinoline hydroperoxide has good biocompatibility, cellular uptake property
新型荧光喹喔啉和喹啉氢过氧化物显示出双重作用,既用作细胞成像的荧光团,又用作光诱导的DNA裂解剂。对新合成的喹喔啉和氢过氧化喹啉的光物理研究表明,它们均显示出中等至良好的荧光。喹喔啉和喹啉氢过氧化物在乙腈中使用350 nm以上的紫外线光解导致相应的酯化合物通过激发的羰基发色团提取γ-氢。单链DNA裂解是在紫外光(⩾350nm)辐照新合成的过氧化氢后完成的。羟基自由基和单线态氧均被鉴定为负责DNA裂解的活性氧(ROS)。此外,我们显示了喹啉氢过氧化物通过插入模式与ct-DNA结合。体外生物学研究表明,喹啉氢过氧化物具有良好的生物相容性,细胞摄取特性和细胞成像能力。最后,我们证明了喹啉氢过氧化物可以有效地渗透到细胞中,并且在紫外线照射下可能引起细胞毒性。