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用生物质谱方法研究抗肿瘤双β-咔啉与DNA及核苷酸的非共价结合

董肖椿1, 胥颖1,2, Carlos AFONSO2, 蒋为群1, Jean-Claude TABET2, 闻韧1   

    1. 复旦大学药学院药物化学教研室, 上海 200032;
    2. 法国巴黎第六大学生物活性分子合成、结构和功能实验室, UMR7613, 巴黎 75252
  • 收稿日期:2007-11-06 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10
  • 通讯作者: 闻韧,Jean-Claude TABET

Bio-MS Studies of Non-covalent Interaction of Bis-β-carbolines Towards DNA and Nucleotides

DONG Xiao-Chun1, XU Ying1,2, Carlos AFONSO2, JIANG Wei-Qun1, Jean-Claude TABET2*, WEN Ren1*   

    1. Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 200032, China;
    2. Laboratoire de Synthèse, Structure et Fonctionédes Molécules Bioactives, UMR 7613, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France
  • Received:2007-11-06 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
  • Contact: WEN Ren,Jean-Claude TABET

摘要: 利用电喷雾傅里叶变换离子回旋共振质谱研究一系列双β-咔啉化合物与DNA的非共价结合. 发现化合物15与5种不同序列的12-mer双链DNA均有明显的非共价结合, 并且有两个β-咔啉环之间连接碳链的长度对此类化合物与双链DNA的非共价结合活性有明显影响. 同时对此类化合物对于DNA非共价结合的序列选择性进行了讨论. 另外还利用电喷雾离子阱质谱研究了双β-咔啉化合物24与4种单核苷酸的非共价结合.

关键词: 双-β-咔啉, DNA, 核苷酸, 非共价结合, 电喷雾傅里叶变换离子回旋共振质谱

Abstract: The non-covalent complexes of five bis-β-carbolines alkaloids with five different double-stranded oligodeoxynucleotides were investigated via electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. These five antitumor compounds all showed DNA binding abilities. The binding affinities in the order of 2>3,4>5,1 were obtained, which mean that the length of the linkage chain between two β-carbolines has a remarkable effect on the formation of the non-covalent complexes. The competition binding experiments results were almost the same as that determined by relative ion abundances. The structure-activity relationships and sequence selectivity were discussed. The non-covalent bindings between the bis-β-carbolines 2, 4 and the nucleotide were then investigated by ESI-MS.

Key words: Bis-β-carbolines, DNA, Nucleotide, Non-covalent interaction, Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry

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