Dynamic Measurement Method for Bio-molecular Interactions by Using Centrifugal Force

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  • OTAKE Mao
    Faculty of Engineering, Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi
  • UKITA Yoshiaki
    Faculty of Engineering, Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi

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<p>Measurement of single molecule interaction is performed by various micromanipulation techniques. However, a complex operation is required to perform the measurement, so the measurement throughput is low and a large amount of time is required for statistical analysis. In this paper, we propose a method for measuring intermolecular interactions that applies a tensile force to the intermolecular bond by using centrifugal force and can easily measure binding force. The binding force of an antigen–antibody reaction system was measured by the use of the proposed method as a proof of concept. The measured binding forces were distributed in the range of 19 – 133 pN. The values obtained by use of the proposed method were consistent with the conventional method. This result is promising for applications that require further development, such as the development of a biosensor as a novel measuring technique that is based on the intermolecular interaction measurement.</p>

収録刊行物

  • Analytical Sciences

    Analytical Sciences 35 (10), 1123-1127, 2019-10-10

    社団法人 日本分析化学会

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