影像科学与光化学 ›› 2005, Vol. 23 ›› Issue (1): 71-78.DOI: 10.7517/j.issn.1674-0475.2005.01.71

• 研究简报 • 上一篇    

四环素-铜(Ⅱ)配合物与DNA相互作用的吸收光谱研究

文美琼1, 高云涛2, 罗永刚1, 王浩华1   

  1. 1. 楚雄师范学院, 化学与生命科学系, 云南, 楚雄, 675000;
    2. 云南民族大学, 化学与生物技术学院, 云南, 昆明, 650031
  • 收稿日期:2004-08-23 修回日期:2004-10-18 出版日期:2005-01-23 发布日期:2005-01-23
  • 通讯作者: 文美琼,女,E-mail:ynwmq@yahoo.com.cn.
  • 基金资助:
    云南省教育厅科学研究基金(04Y174C);楚雄师范学院科学研究基金(03 YB17).

Absorption Spectrum Studies on Interaction of Tetracyline (TC)-Cu(II) Complex with DNA

WEN Mei-qiong1, GAO Yun-tao2, LUO Yong-gang1, WANG Hao-hua1   

  1. 1. Department of Chemistry and Life Science, Chuxiong Teachers College, Chuxiong 675000, Yunnan, P. R. China;
    2. College of Chemistry and Biotechnology, Yunnan Institute of Nationalities, Kunming 650031, Yunnan, P. R. China
  • Received:2004-08-23 Revised:2004-10-18 Online:2005-01-23 Published:2005-01-23

摘要: 用紫外光谱方法研究了四环素(TC) Cu(II)配合物与DNA的相互作用.吸收光谱研究表明,DNA能与四环素(TC)及Cu(II)形成的配合物发生反应,配合物与DNA的作用方式随着配合物类型及DNA浓度的不同而不尽相同:当四环素与铜形成1:1型配合物时,较低浓度的DNA能与配合物以嵌插方式相互作用,而较高浓度的DNA与该配合物除了发生嵌插作用外,还存在另外的作用方式;当四环素与铜形成1:2型配合物时,DNA与该配合物则主要以嵌插方式相互作用,并且这两种配合物与DNA的嵌插作用均是通过四环素配体插入的.

关键词: 铜(II), 四环素(TC), 配合物, DNA, 嵌插

Abstract: The interaction of tetracycline(TC)-Cu(II) complex with DNA was studied with UV-Vis absorption spectrometry.The absorption spectrum studies indicate that DNA can interact with tetracyline(TC)-Cu(II) complex.The way of interaction between the complex and DNA varies in accordance with the types of complex and the concentration of DNA.If tetracycline interact with Cu(II) to form 1:1 complex, the complex can interact with DNA by way of intercalation when the concentration of DNA is lower; when the concentration of DNA is higher,in addition to interacting with DNA by way of intercalation,the complex can interact with DNA by other way. If tetracycline interact with Cu(II) to form 1:2 complex, the complex interact with DNA by way of intercalation mainly.That two kinds of the complex intercalate DNA all by way of tetracycline inserted in it.

Key words: Cu (II), tetracycline(TC), complex, DNA, intercalation

中图分类号: