淡江大學機構典藏:Item 987654321/111872
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    题名: Enhanced Signal and Quantitative Detection of nti-Interferon-Gamma Antibody by Using a Nanometer Biolinker
    作者: Tsai, Pei-I;Lee, Adam Shih-Yuan;Lee, Shu-Sheng;Chung, Ming-Han;Liu, Meng-Wei;Lee, Chih-Kung
    日期: 2016-07-26
    上传时间: 2017-10-27 02:11:27 (UTC+8)
    出版者: CrossMark
    摘要: For rapid screening and quantification of an antisera antibody, a nanometer bithiophene-based conductive biolinker can enhanced signal performance and can be used to verify the interaction of an anti-IFN-γ antibody with an IFN-γ protein. The experimental measurements take a generic approach which takes advantage of the functionality of thiophene-based linkers for biosensors. Effects associated with using bithiophene as a biolinker for surface plasmon resonance (SPR) spectroscopy are examined in this paper. By using an atomic force microscope (AFM), it was observed that the morphology of the bithiophene modified gold sensor surface became smoother than the original gold surface. We compared the response and concentration of the anti-IFN-γ antibody on a bithiophene-coated and dextran-coated biochip as well as on different thickness-modified surfaces under SPR relevant conditions. The results indicate that a response to IFN-γ molecules immobilized on a sensor using a bithiophene biolinker improved more than 8-fold when compared to that of a sensor using a dextran biolinker. Furthermore, the regeneration ability of the sensor surface shows good repeatability as only less than a 1% decrease was found after repeating the experimental work over 6 cycles. The characteristics provided us with a good platform for rapid screening, real-time monitoring and quantitative concentration of the autoimmune antibody activities.
    關聯: PLoS ONE
    DOI: 10.1371/journal.pone.0160031
    显示于类别:[化學學系暨研究所] 期刊論文

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