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无胶筛分芯片电泳研究贝类毒素-软骨藻酸与寡聚DNA的相互作用

Interaction Between Domoic Acid and Double-Stranded Oligodeoxy-nucleotide Studied by Using Microchip-based Non-gel Sieving Electrophoresis

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【作者】 周小棉; 李大志; 沈铮; 刘伟; 李桂茹; 林炳承;

【Author】 ZHOU Xiao-Mian~-{1,2-}, LI Da-Zhi~-{1,3-}, SHEN Zheng~1, LIU Wei~3, LI Gui-Ru~4, LIN Bing-Cheng~-{1*-}(1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; 2. Department of Clinical Laboratory, Guangzhou First Municipal People′s Hospital, Affiliated of Guangzhou Medical College, Guangzhou 510500, China; 3. Dalian Customs Laboratory, Dalian 116001, China; 4. The Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China)

【机构】 中国科学院大连化学物理研究所; 大连海关分析测试中心; 大连医科大学附属第二医院; 中国科学院大连化学物理研究所 大连116023; 广州医学院附属广州市第一人民医院检验科; 广州510500; 大连116023; 大连116001; 大连116023;

【Abstract】 The interaction between domoic acid(DA) and 18-mer double-stranded DNA(dsDNA) was investigated by using microchip-based non-gel sieving electrophoresis. For the 18-mer dsDNA with a sequence of 3′-GCATTGGTTGACGTTGCA-5′, the amount of free dsDNA decreases with the increase of the added DA and also with the increase of reactive time. Meanwhile, the newly-produced two peaks were observed. The experimental results show that there is a strong interaction between DA and the 18-mer dsDNA. DA makes the degradation of the 18-mer dsDNA. The non-gel sieving electrophoresis on microchip is a rapid, convenient, highly sensitive method for studying the interaction between DNA and small molecules.

【基金】 国家自然科学基金(批准号:20275039);国家自然科学基金重点项目(批准号:20035010);国家自然科学基金重大项目(批准号:20299030);中国科学院仪器研制专项基金资助
  • 【文献出处】 高等学校化学学报 ,Chemical Research In Chinese Universities , 编辑部邮箱 ,2005年07期
  • 【分类号】R114;
  • 【被引频次】6
  • 【下载频次】137
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