申请人:Althaus S. John
公开号:US20060207891A1
公开(公告)日:2006-09-21
The present invention relates to an electrochemical method for detecting a target polynucleotide. An electrode comprising an electrode surface is provided. The electrode surface includes at least one probe molecule reverisbly immobilized with respect to the electrode surface. A first electrochemical signal indicative of an amount of probe molecule immobilized with respect to the electrode surface is obtained. The electrode surface is contacted with a liquid comprising the target polynucleotide. Upon the contacting step, at least some of the probe molecule immobilized with respect to the electrode surface dissociates therefrom. A second electrochemical signal indicative of an amount of probe molecule immobilized with respect to the electrode surface is obtained. The presence of the target polynucleotide is determined at least partially on the basis of the first and second electrochemical signals.
本发明涉及一种检测目标多核苷酸的电化学方法。提供了一种包括电极表面的电极。电极表面包括至少一个相对于电极表面可逆固定的探针分子。可获得指示相对于电极表面固定的探针分子量的第一电化学信号。电极表面与含有目标多核苷酸的液体接触。在接触步骤中,相对于电极表面固定的探针分子至少有一部分从电极表面解离。获得指示相对于电极表面固定的探针分子量的第二电化学信号。目标多核苷酸的存在至少部分是根据第一和第二电化学信号确定的。