| 研究生: |
陳振臺 Chen, Chen-tai |
|---|---|
| 論文名稱: |
利用連續式波長近紅外光雷射探討以金為主的奈米材料在三種癌細胞的光熱治療效果 : 金奈米棒 、 金銀奈米空球 、 二氧化矽-金奈米球 A systematic study of photothermal therapeutic efficiency of Au-based nanomaterials with three malignant cells using CW near-infrared laser : Au nanorods , Au/Ag hollow nanospheres , silica@Au nanoparticles |
| 指導教授: |
葉晨聖
Yeh, Chen-sheng |
| 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: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 84 |
| 中文關鍵詞: | 光熱治療 |
| 外文關鍵詞: | photothermal therapy, Au nanorods, Au/Ag hollow nanospheres, silica@Au nanoparticlrs |
| 相關次數: | 點閱:111 下載:5 |
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本篇研究中,比較三種以金為主的奈米材料(金奈米棒、金銀奈米空球及二氧化矽-金核殼奈米球)對於A549(人類肺癌)、HeLa(人類子宮頸癌)及TCC-N5(人類膀胱癌)細胞的光熱治療效果。首先合成出此三種奈米材料,在近紅外光(800 nm)都有最強的表面電漿共振吸收(SPR)。另外,由光熱轉換實驗證實三種奈米材料都具有良好的光熱轉換效果,且從細胞毒性分析也證實三種材料都有很好的生物相容性,因此可應用於生物體的光熱治療。
光熱治療實驗分別從奈米材料的金原子濃度、雷射照射時間及照射功率進行探討,比較奈米材料之間與癌細胞之間的光熱治療效果。對於影響光熱治療效果的因素包含癌細胞本身的耐熱性、抗原數目及奈米材料在癌細胞表面的標定粒子數。在三種癌細胞的光熱治療比較以A549癌細胞效果最佳,TCC-N5癌細胞次之,HeLa癌細胞最差;而奈米材料標定在三種癌細胞表面的粒子數都有相同的趨勢,都以金奈米棒最多,金銀奈米空球次之,二氧化矽-金奈米球最少。因此奈米材料的光熱治療效果為金奈米棒最佳,金銀奈米空球次之,二氧化矽-金核殼奈米球最差。
In this study, the photothermal therapeutic efficiency of gold-based nanomaterials were compared for A549, HeLa, TCC-N5 malignant cell lines. First of all, three types of gold-based nanomaterials with near-infrared absorption at 800 nm were prepared. Their excellent photothermal properties and biocompatibilities were confirmed by measuring temperature experiments and MTT assays. Therefore they were suitable for the application of photothermal therapy for cancers.
In order to study the photothermal therapeutic efficiency of gold-based nanomaterials, the experiments were discussed with gold atomic concentrations, laser irradiation powers and irradiation times. The factors of photothermal therapeutic efficiency included the heat-resistant capacities of malignant cells and the numbers of antigens and targeted nanomaterials on the surfaces of malignant cells. The comparison of the photothermal therapeutic efficiency for three cancer cells showed that A549 malignant cells were the best effective and HeLa malignant cells were the worst. There was the same tendency that the targeted numbers of gold nanorods were the most and silica@Au nanoparticles were the least. Therefore the comparison of the photothermal therapeutic efficiency for gold-based nanomaterials showed that gold nanorods were the most effective and silica@Au nanoparticles were the worst.
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