高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (10): 1830.

• 研究快报 • 上一篇    下一篇

DNA与生物碱类化合物非共价作用的负离子电喷雾质谱研究(Ⅰ)

宋凤瑞, 刘宁, 闫存玉, 刘志强, 刘淑莹   

  1. 中国科学院长春应用化学研究所新药研究实验室, 长春130022
  • 收稿日期:2004-04-16 出版日期:2004-10-24 发布日期:2004-10-24
  • 基金资助:

    国家自然科学基金(批准号:20173057);吉林省科技厅科技专项基金(批准号:20030502)资助

Non-covalent Interaction Between Oligodeoxynucleotide and Alkaloid Compounds via Negative Ion Electrospray Mass Spectrometry(Ⅰ)

SONG Feng-Rui, LIU Ning, YAN Cun-Yu, LIU Zhi-Qiang, LIU Shu-Ying   

  1. Laboratory of New Drug Research, Changchun Institute of Applied Chemistry, Chinese Academy Sciences, Changchun 130022, China
  • Received:2004-04-16 Online:2004-10-24 Published:2004-10-24

关键词: DNA靶分子, 生物碱, 非共价复合物, 电喷雾电离质谱, 作用位点

Abstract: Oligodeoxynucleotide from SARS virus was selected and synthesized. Its complexes with alkaloid compounds were investigated by electrospray mass spectrometry. We found that three alkaloid compounds could interact with the DNA target molecule in five alkaloids analyzed. With increasing molar ratio of the three alkaloid compounds, the complexes between alkaloids and DNA with different stoichiometric ratios were found in their MS spectra. The order of the alkalinity of their gas phase corresponds to that of liquid phase, that is: Palmatine>Jatrorrhizine>Berberin. The relative abundance of these complexes in mass spectra can assess the relative affinities of above three alkaloid compounds with the DNA target molecule. In this paper, the binding sites between jatrorrhizine and DNA was deduced from the interaction experiments of jatrorrhizine with three nucleosides.

Key words: DNA target molecule, Alkaloid, Non-covalent complex, Electrospray ionization mass spectrometry, Binding site

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