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  5. 硫醇/胺基有機矽奈米粒子之蛋白吸附特性
 
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硫醇/胺基有機矽奈米粒子之蛋白吸附特性

Other Title
Characterization of Protein Adsorption on Thiol/Amino-Organosilica Nanoparticles
Type
thesis
Date Issued
2023-06-13
Author(s)
陳劭芹
Advisor
邱士娟
Subjects
系所名稱:藥學系碩士班
Description
學位別:碩士
語文別:中文
口試委員:胡德民 HU, TEH-MIN;鄭幼文 CHENG, YU-WEN;邱士娟 CHIU, SHIH-JIUAN
授權範圍:網際網路,開放日期為2028-07-06
Abstract
蛋白冠 (Protein corona) 是一種生物分子塗層,在進入生物體內時,表面會立即吸附體內的蛋白質或其他生物分子。而蛋白冠的形成會影響奈米粒子的特性,例如大小、形狀和表面電荷。這些相互作用可能會改變奈米系統的毒性,影響奈米治療藥物的生物分佈和功效。先前的研究中,本實驗室已經成功開發了一種利用簡單製備的方法來製備具有雙官能基團(硫醇和胺基)表面改性的矽奈米粒子。這些粒子具有帶正電的表面並表現出高分散性。本研究針對上述粒子,嘗試以血清白蛋白作為奈米粒子表面預塗層材料,探討蛋白吸附條件,製備預塗層奈米粒子,並進行細胞攝入奈米粒子之比較實驗。研究中,透過調整 pH、溫度、時間、蛋白質濃度和混合體積等各種因素,製備出粒徑大小從 91.9±0.9 nm 增加到 149.6±1.8 nm。表面電荷從正變為負(從 53.1±3.4 mV 到 -17.1±0.7 mV),蛋白質吸附率為0.01 % 至1.98 %的蛋白預塗層雙官能基矽奈米粒子。細胞毒性試驗結果顯示,蛋白預塗層奈米粒子具有良好的生物相容性,且於癌細胞吞噬實驗中呈現促進細胞吞噬的效果。結論:本研究成功地將含有硫醇和胺基之雙功能有機矽奈米粒子修飾成表面具有蛋白覆蓋之奈米藥物載體,研究顯示經蛋白修飾後的奈米載體較容易被癌細胞所攝取,初步驗證以蛋白預塗層優化奈米製劑之潛力,或許未來能作為奈米藥物開發的劑型考量依據。
URI
https://handle.ncl.edu.tw/11296/46b8ev
https://203.71.86.71/handle/123456789/10194

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