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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6063


    Title: DNA型式碳水化合物抗原之生物偵測器的開發及應用;Aptamer-Based Probes for Carbohydrate Antigens and Its Application
    Authors: 呂偉立;Wei-Li Lu
    Contributors: 化學研究所
    Keywords: 碳水化合物抗原;生物偵測器;SELEX;carbohydrate antigen;Aptamers;Tn
    Date: 2004-06-24
    Issue Date: 2009-09-22 10:12:39 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 在哺乳類動物的腫瘤細胞表面都會暴露出大量不同於一般正常細胞的醣體,因此我們希望能藉由將本實驗室之前所研究的碳水化合物腫瘤抗體如結腸癌中的Tn引進SELEX(Systemic Evolution of Ligands by EXponential Enrichments)系統來開發出對此類不正常醣體具有高度辨識能力的aptamers(經過SELEX系統所篩選出對特定化合物具有強作用力之單股去氧核醣核酸),希望能以此來開發針對不正常醣體具有高度專一性之生物偵測器,將此利用在醫療的診斷上,期望可達到在癌症發生初期時即可偵測出病變的診斷工具。 Cell surface carbohydrates have been shown to play essential biological roles in divers biological phenomena such as molecular recognition, used the carbohydrate antigen (ex. Tn antigen found in gastrointestinal tissues) to distinguish cancer cell with normal cell. Then used Tn antigen as target molecular in the SELEX(Systemic Evolution of Ligands by EXponential Enrichments), found the aptamers(isolation of DNA ligands out of the random sequence pool). The aptamers have high affinity and selectivity to Tn antigen. The aptamers can be applied to develop sensor for Tn antigen. We wish the sensor could be used to diagnostic cancer early.
    Appears in Collections:[化學研究所] 博碩士論文

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