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  5. 碳酸酐酶IX抗體之製備及研究
 
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碳酸酐酶IX抗體之製備及研究

Other Title
Generation and characterization of chicken antibody against carbonic anhydrase IX
Type
thesis
Date Issued
2017-07-14
Author(s)
蘇怡韋
Advisor
呂思潔
楊沂淵
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:呂思潔
共同指導教授:楊沂淵
口試委員:蔡博宇;劉柯俊;張榮善
中文關鍵字:碳酸酐酶IX;癌症;單株抗體;噬菌體展示法
英文關鍵字:carbonic anhydrase IX;cancer;scFv;phage display
Abstract
碳酸酐酶IX (carbonic anhydrase IX, CAIX)是一種跨膜蛋白,在正常組織中表現量低,但在腫瘤細胞中會過度表達,而CAIX表現主要是由於缺氧環境而被誘導。臨床研究顯示,缺氧環境會促使腫瘤更加惡化甚至有癌細胞增殖及轉移的現象發生,因此,想要研發製備針對CAIX治療的抗體。在本篇論文當中,我們將CAIX基因選殖到蛋白表現載體pET-21a(+)以及pET-32a(+)中,並表現純化出與his-tag融合的CAIX重組蛋白,再將其重組蛋白用來免疫雞隻以產生特異性多株抗體。將經過免疫之雞蛋中純化取得IgY抗體,以西方墨點法(Western blot)及酵素免疫分析法(ELISA)測試,結果顯示IgY抗體與重組CAIX融合蛋白具有結合能力,且在西方墨點法結果中辨認不到陰性對照組的融合蛋白,證實IgY對CAIX融合蛋白具特異性辨認能力。我們成功建構了short linker與long linker的anti-CAIX抗體基因庫,且分別的大小為5x106與6x106,經過bio-panning的過程,總共篩選出了五株序列不同anti-CAIX scFv,並且可以辨認到不同片段的CAIX重組蛋白,且可以分為兩種辨認的位置,分別為anti-CAIX S2、S3、L6、L10結合於353-413和L5結合於154-413個胺基酸之間。此外五株單株抗體都能夠利用大腸桿菌表現系統進行純化,在未來完成anti-CAIX 單株抗體對於CAIX+癌細胞株結合能力測試,可應用於治療與辨識CAIX+癌細胞。
URI
https://203.71.86.71/handle/123456789/57920

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