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  5. 以超高速離心法及超微薄膜過濾合併粒徑篩析法萃取牙髓幹細胞衍生外泌體之特性分析比較
 
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以超高速離心法及超微薄膜過濾合併粒徑篩析法萃取牙髓幹細胞衍生外泌體之特性分析比較

Other Title
Comparative analysis of ultracentrifugation and ultrafiltration combined with size exclusion chromatography for the isolation and characterization of dental pulp stem cell-derived exosomes
Type
thesis
Date Issued
2023-07-07
Author(s)
簡郁庭
Advisor
馮聖偉
Subjects
系所名稱:牙醫學系碩士班
Description
學位別:碩士
語文別:中文
口試委員:陳立昇 CHENG, LI-SHENG;王振穎 WANG, CHEN-YING;馮聖偉 FENG, SHENG-WEI
授權範圍:網際網路,開放日期為2023-07-25
Abstract
外泌體經研究證實在未來再生醫學治療中是具備可信且極具影響力的,在細胞間的訊息因子傳遞中有效發揮作用,從而有助於發現癌症發病機制和過程,使其在疾病診斷與治療研究發展中逐漸受到矚目。現今已有愈來愈多實驗開始進行外泌體相關的研究,然而,以外泌體為基礎的研究快速擴展但是卻對於萃取外泌體的方法缺乏共識及標準量化,因此現今找出適合萃取出外泌體的方法至關重要。目前,外泌體樣品的萃取已有了幾種方法,超高速離心法是最常用的技術,但反覆地進行超高速離心會破壞外泌體的結構和生物學完整性。我們評估了使用超高速離心法和超微薄膜過濾合併粒徑篩析法從牙髓間葉幹細胞中萃取出的外泌體。首先,我們直接比較了兩種方法萃取外泌體的能力,以整合性且有系統性的方式比較與分析外泌體的特性、進行標準量化、特性分析與蛋白質體分析。我們經由超高速離心和超微薄膜過濾合併粒徑篩析法皆成功萃取出了牙髓間葉幹細胞外泌體,然而,超高速離心法在萃取外泌體的產量方面超過了超微薄膜過濾合併粒徑篩析法,但超微薄膜過濾合併粒徑篩析法之樣本顆粒尺寸分布更為平均。接著我們更進一步評估與比較兩種不同萃取方法之牙髓間葉幹細胞外泌體對於牙周韌帶幹細胞(PDLSCs) 的增殖能力、細胞遷移和骨分化能力的影響,隨著外泌體劑量的增加,效果也更加顯著。為了提高在臨床的應用價值,我們仍需要更進一步對外泌體膜蛋白的種類及功能、基因表達,以及可能的信息傳遞途徑進行更深入的研究。
URI
https://handle.ncl.edu.tw/11296/gybe76
https://203.71.86.71/handle/123456789/10456

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