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  3. .博碩士學位論文
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  5. 新型層狀細胞製備方法之探討
 
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新型層狀細胞製備方法之探討

Other Title
A New Way to Engineer Cell Sheet
Type
thesis
Date Issued
2012-07-10
Author(s)
蔡正鯤
Advisor
曾厚
Subjects
系所名稱:醫學科學研究所
Publisher
醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:曾厚
共同指導教授:
口試委員:黃義侑;麥富德
中文關鍵字:PVDF;cystine;γ-PGA;層狀細胞;cysteine
Abstract
電漿表面改質為一種高經濟效益的技術,可使表面具適當的共價鍵修飾達成所需的材料表面性質,並不損害材料主體性質。此一技術廣泛運用在各項工業及生醫產業成品上,及應用於組織工程學領域。
本研究以改善日本學者岡野採用的細胞脫著技術為目標(聚異丙基丙烯醯胺這種高分子材料分解後的單體具有生物毒性),因此本研究中以此結果為基礎嘗試以可經TCA Cycle降解的Cystine與聚麩胺酸(gamma-poly(glutamic acid);γ-PGA)作為研究素材藉由二甲基氨基丙基–3乙基碳二亞胺鹽酸鹽(1-3-dimethyl-aminopropyl- 3-ethylcarbodiimidehydrochloride;EDC)架橋劑作用,製備出可被cysteine 還原表面被雙層修飾的PVDF(polyvinylidene fluoride)薄膜,達到減少ECM破壞,使脫著細胞具有較完整的層狀結構。本研究利用染色法(甲基藍;methylene blue)瞭解表表面改質得均勻性,以及水接觸角(contact angle)的測量,得知PVDF薄膜經表面改質呈現更親水的狀態,以及經由cysteine處理的薄膜表面特性的改變;並以化學分析電子儀(ESCA; Electron Spectroscopy for Chemical Analysis)測定材料表面元素組成,證實薄膜表面確實改質成功。利用老鼠纖維母細胞株 (NIH3T3)培養在薄膜上的研究結果顯示表面改質的薄膜利於細胞生長。在薄膜上培養兔子角膜上皮細胞,並利用還原雙硫鍵使細胞薄膜成功脫著。此一結果顯示運用此方法來培養細胞,可成功的培養出層狀細胞,並在保留其ECM的情形下將細胞脫離培養的環境,有利於上皮組織修補再造的手術執行。未來,可以此技術為基礎,以動物實驗研究上皮移植的可行性,以提高臨床應用的價值。
URI
https://203.71.86.71/handle/123456789/11133

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