应用化学 ›› 2009, Vol. 26 ›› Issue (12): 1461-1465.

• 研究论文 • 上一篇    下一篇

双大环多胺Zn(Ⅱ)配合物及其与DNA作用的溴乙锭荧光探针

李硕1,2,周成合1,陈稼轩2,向清祥2*   

  1. (1.西南大学化学化工学院 重庆;2.乐山师范学院化学与生命科学学院 乐山 614004)
  • 收稿日期:2008-12-17 修回日期:2009-04-19 出版日期:2009-12-10 发布日期:2009-12-10
  • 通讯作者: 向清祥,男,博士,教授; E-mail:qxxiang711@163.com; 研究方向:生物有机化学、有机合成
  • 基金资助:
    四川省科技厅应用基础项目(04JY029018)四川高校重点实验室专项(2006ZD049)和乐山市重点科技计划(06GZD043)资助项目

EB Fluorescence Probe on the Interaction between Dinuclear Macrocyclic Polyamine Zn(Ⅱ) Complex and DNA

LI Shuo1,2, ZHOU Cheng-He1, CHEN Jia-Xuan2, XIANG Qing-Xiang2*   

  1. (1.Department of Chemistry and Chemical Engneering,Southwest Univercity,Chongqing;
    2.Department of Chemistry and Life Science,Leshan Teachers College,Leshan 614004)
  • Received:2008-12-17 Revised:2009-04-19 Published:2009-12-10 Online:2009-12-10

摘要:

以1,4,7,10-四氮杂环十二烷(Cyclen)为原料合成的一种新型双大环多胺配体及其双核Zn2+配合物,其结构用1H NMR、质谱和元素分析等测试技术进行了表征。 以溴乙锭(EB)为探针,用荧光光谱法研究了双环多胺配体及其Zn(Ⅱ)配合物与小牛胸腺DNA的作用,当cComplex 6/cDNA=0.51时,DNA/EB体系的荧光强度降低至原来的47.3%,表明双大环配合物是以嵌入方式与小牛胸腺DNA结合。 化合物对DNA/EB体系的荧光猝灭顺序为:双大环多胺双核Zn(Ⅱ)配合物>双大环多胺配体>四氮杂环多胺Zn(Ⅱ)配合物>四氮杂环多胺。

关键词: 双大环多胺, Zn(Ⅱ)配合物, 合成, 小牛胸腺DNA, 荧光

Abstract:

A novel dinuclear macrocyclic polyamine Zn(Ⅱ) complex was synthesized from 1,4,7,10-tetraazacyclododecane, the structures of the compounds were characterized by 1H NMR, MS and elemental analysis. The interactions between calf thymus(CT) DNA and these compounds were investigated by fluorometric detection. The fluorescence intensity of the DNA/EB system was decreased to 47.3% of that of the initial system at c(complex 6)/c(DNA)=0.51, which indicates that the dinuclear complex was inserted into the CT DNA. The order of fluorescence quenching values of the DNA/EB systems by these ompounds:dinuclear macrocyclic polyamine Zn(Ⅱ) complexd>dinuclear macrocyclic polyamine ligand>CyclenZn(Ⅱ) complex>Cyclen.

Key words: dinuclear macrocyclic polyamine,Zn(Ⅱ) complex,synthesis,CT DNA,fluorescence

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