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  5. 血管內皮生長因子對口腔癌幹細胞之影響
 
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血管內皮生長因子對口腔癌幹細胞之影響

Other Title
The Role of Vasoendothelial Growth Factor to Oral Cancer Stem Cells
Type
thesis
Date Issued
2012-06-22
Author(s)
陳志僑
Advisor
李勝揚
Subjects
系所名稱:牙醫學系碩博士班
Publisher
牙醫學系碩博士班
Description
學位別:碩士
語文別:中文
指導教授:李勝揚
共同指導教授:楊維中;王敦正
口試委員:蘇正堯;夏堪臺
中文關鍵字:血管內皮生長因子;癌幹細胞
Abstract
口腔癌是台灣男性常見的癌症之一。初期口腔癌的治療方式以手術為主,但對於末期患者而言,手術治療不僅造成顏面外觀及咀嚼功能極大的缺陷,其五年存活率也只有30~50%,因此新的抗癌藥物仍持續在研發中。Genetech 公司所研發之標靶治療藥物Bevacizumab (Avastin)為針對血管內皮生長因子(Vascular endothelial growth factor, VEGF)之單株抗體藥物,其在治療轉移性大腸直腸癌具有療效。此外,血管內皮生長因子也被證實對口腔癌細胞有直接作用,使其經由上皮-間質轉化而進行侵犯及轉移。然而,在臨床治療方面,第二期臨床試驗的成果顯示並不優於傳統化學治療藥物。因此血管內皮生長因子對頭頸癌細胞的影響仍須進一步探討。
最近的研究發現,血管內皮生長因子能製造適合癌幹細胞的微環境,對癌幹細胞有促進作用。本實驗以群落形成試驗分離出SAS細胞株之次族群,並經過表面抗原檢測顯示次族群中具有較多的CD44陽性細胞,同時表現較接近間質細胞的性狀。而細胞侵犯試驗證實了次族群細胞確實具有較強的侵犯能力,且加入血管內皮生長因子抗體中和後,次族群的侵犯能力明顯被抑制。因此相較於對原始細胞族群使用抗體,針對次族群使用抗體的效果更為顯著,因此,設計用血管內皮生長因子單株抗體以口腔癌幹細胞作為標靶的治療策略,或許能提供更有效的治療。
URI
https://203.71.86.71/handle/123456789/10953

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