| 研究生: |
周孟寬 Chou, Mong-Kuan |
|---|---|
| 論文名稱: |
光聚合高分子在蛋白質分析上的應用 Applications of Photopolymer for Protein Analysis |
| 指導教授: |
陳淑慧
Chen, Shu-Hui |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學系 Department of Chemistry |
| 論文出版年: | 2003 |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 105 |
| 中文關鍵詞: | 光聚合高分子應用 、蛋白質分析 |
| 外文關鍵詞: | applications of photopolymer, protein analysis |
| 相關次數: | 點閱:169 下載:1 |
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本研究的目的是利用光聚合高分子材料分別應用於不同分析裝置上,如生物晶片、質譜等。由於光聚合高分子材料具有快速聚合、聚合位置與形狀選擇性高、高分子表面可依需要進行不同的衍生化、高分子為多孔性的材料具有相當大的表面積可增加與分析物接觸的面積等多種優點,所以可將光聚合高分子材料應用於分析工具上,提高分析工作效率。
本研究中將光聚合高分子形成在玻璃基材的微流體晶片管道中,以製作成阻擋閥(frit)來阻擋填充於晶片管道中的靜相顆粒,使其可進行晶片上的固相翠取與濃縮。實驗結果證明以光聚合高分子所形成於晶片上的阻擋閥,在玻璃晶片上確實可以有效的阻擋5μm大小的C18顆粒,所形成之高分子的孔洞大小由電子顯微鏡觀察顯示約為1μm。
光聚合高分子的另一項應用是製作可拋棄式的生化分子濃縮純化吸管尖,本研究利用光聚合高分子將不同種類的靜相材料,如C18顆粒及金屬離子親和層析靜相,固定於微量吸管尖中,取代目前被廣泛使用於樣品濃縮去鹽的Zip-TipsTM。由介質輔助雷射脫附離子源-飛行時間質譜儀對胜肽樣品的測試結果證明在濃縮去鹽方面最大可達到約五倍的濃縮效果。在金屬離子親和層析吸管尖的應用方面,實驗結果顯示所製成之金屬離子親和層析濃縮吸管尖可將磷酸化的胜肽由酪蛋白消化物中濃縮萃取出來,以增強磷酸化胜肽的質譜訊號強度。此外,所開發之濃縮吸管尖具備高效能、使用方便、成本低廉以及修飾胜肽之選擇性等,是目前市面上產品未具有的優勢。
This study is focused on the fabrication of photopolymers and their applications for the fabrication of biochips and sample preparation to facilitate protein analysis using mass spectrometry. Owing to the inherent advantages of photopolymers, such as speedy polymerization, feasibility for fabrication on a defined area, large surface area and variable surface modifications, photopolymers have been widely investigated for many applications.
In the first part of this study, the photopolymer was used to fabricate a frit for packing chromatographic C18 beads along the microchannel for chip-based solid phase extraction. Results show that the fabricated photopolymers had a pore size of around 1μm and was capable of holding 5μm of C18 beads.
The second part of this study is to use photopolymer in fabricating disposable tips for concentration and purification of bimolecules prior to MS analysis. Based on the analysis of MALDI-TOF MS, the ion signals of tryptic digest of standard proteins could be enhanced by 5 times using the fabricated photopolymer tip with imbeded C18 beads. Moreover, the phosphopeptids of β-casein can be readily detected by the use of photopolymer tip with imbeded metal chelate beads, which had extracted and concentrated these phosphopeptides from a complicated digest mixture. This device appears to be promising since it exhibits several advantages over some commercial products, such as high performance, easy-to-use, cheap and versatile for the enrichment of post-translational modified peptides.
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