研究生: |
陳葆光 |
---|---|
論文名稱: |
天然磷脂質配方作為微脂粒基因載體與體外細胞轉染研究 The Study of Natural Phospholipid as Helper Lipid in Liposome Based Gene Delivery |
指導教授: | 朱一民 |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 化學工程學系 Department of Chemical Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 56 |
中文關鍵詞: | 微脂粒 、基因治療 、基因傳遞 、轉染 |
外文關鍵詞: | liposome, gene therapy, gene delivery, transfection |
相關次數: | 點閱:1 下載:0 |
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本研究之目的在於探討天然中性磷脂質作為微脂粒基因載體之成份時,對正電荷微脂粒及微脂粒-DNA複合物(lipoplex)之轉染效率的影響,以評估其是否增進傳統正電荷微脂粒的功效。實驗中將使用不同比例之DC-Chol, DOPE, EPC, HSPC製備成正電荷微脂粒。並且將質體DNA(pEGFP-N1)與不同比例之正電荷微脂粒混合形成微脂粒-DNA複合物,供體外細胞轉染實驗使用,其中以中國倉鼠卵巢細胞(CHO-K1)作為宿主。轉染效率是以流式細胞儀測定轉染後螢光細胞數與細胞總數的比例。實驗結果發現僅以DOPE為中性脂質的載體具有最好的轉染效果,高出商品化轉染試劑約4%,但只有約30%的細胞存活率。加入天然磷脂質的正電荷微脂粒雖然無法明顯增進細胞轉染的效率,但含有EPC的載體還是保有10%以上的轉染效率,且增加了細胞存活率至50%以上。而含有HSPC的載體對細胞的傷害最小,約87%以上的細胞存活率,但僅有不到10%的轉染效率。由本實驗可以得知,加入天然磷脂質對於降低細胞毒性有顯著的效果,且透過配方比例的調整,我們可以在轉染效率與細胞存活率之間取得最適用的基因載體。
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