高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (8): 1737.

• 研究论文 • 上一篇    下一篇

荧光探针Ru(phen)2(dppx)2+测定H1N1禽流感病毒DNA

曾国平1,2, 向东山2, 蔡金杖2, 何治柯2   

  1. 1. 湖北第二师范学院化学与生命科学学院,  武汉 430205;
    2. 武汉大学化学与分子科学学院, 生物医学分析化学教育部重点实验室, 武汉 430072
  • 收稿日期:2010-09-27 修回日期:2011-04-16 出版日期:2011-08-10 发布日期:2011-07-19
  • 通讯作者: 何治柯 E-mail:zhkhe@whu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 21075093, 20921062)资助.

Determination of Sequence-specific DNA Related to the Avian Influenza H1N1 Virus by Fluorescent Probe Ru(phen)2(dppx)2+

ZENG Guo-Ping1,2, XIANG Dong-Shan2, CAI Jin-Zhang2, HE Zhi-Ke2*   

  1. 1. College of Chemistry and Biology Science, Hubei University of Education, Wuhan 430205, China;
    2. Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
  • Received:2010-09-27 Revised:2011-04-16 Online:2011-08-10 Published:2011-07-19
  • Contact: HE Zhi-Ke E-mail:zhkhe@whu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 21075093, 20921062)资助.

摘要: 利用荧光探针Ru(phen)2dppx2+与ssDNA作用时不产生荧光或荧光很弱,而与dsDNA作用时荧光增强的机理,将H1N1禽流感病毒ssDNA与其完全互补ssDNA杂交形成dsDNA实现Ru(phen)2dppx2+对H1N1禽流感病毒DNA特定序列(5’-CTA CCA TGC GAA CAA TTC AAC CGA CAC TGT T-3’)的定量检测。在优化的实验条件下,测定H1N1禽流感病毒 DNA的线性范围为9.3×10-10~7.4×10-8 mol/L,线性关系:y = 3.3829x + 8.3948,R2 =0.9982,检出限为5.3×10-10 mol/L。该方法具有操作简单,检测快速,灵敏度高和选择好等优点。

关键词: 荧光探针Ru(phen)2(dppx)2+, H1N1禽流感病毒, 荧光光谱, 定量检测

Abstract: The determination of sequence-specific DNA related to the avian influenza H1N1 virus was realized with the molecular 'Light Switch' complex of Ru(phen)2dppx2+. There is no or weak fluorescence between the Fluorescent Probe Ru(phen)2dppx2+ and ssDNA probe. However, the luminescent enhancement was observed in presence of target DNA resulted from the intercalation of the complex into the hybrids between probe DNA and target DNA. Under the optimum conditions, the linear range of the DNA related to the avian influenza H1N1 virus is 9.3×10-10~7.4×10-8 mol/L, the calibration curve is y = 3.3829x + 8.3948, R2 =0.9982, and the detection limit is 5.3×10-10 mol/L. This method is simple, rapid, sensitive and selective.

Key words: Fluorescent probe Ru(phen)2(dppx)2+, Avian influenza H1N1 virus, Fluorescence spectrum, Quantitative detection

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