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  5. Nilotinib造成人類未分化甲狀腺癌細胞凋亡及抑制上皮-間質轉化之探討
 
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Nilotinib造成人類未分化甲狀腺癌細胞凋亡及抑制上皮-間質轉化之探討

Other Title
Anti-human anaplastic thyroid cancer by Nilotinib via induction of apoptosis and suppression of epithelial mesenchymal transition
Type
thesis
Date Issued
2016-07-22
Author(s)
郭偉真
Advisor
陳彥州
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:陳彥州
共同指導教授:
口試委員:李哲夫;張榮善
中文關鍵字:甲狀腺未分化癌;Nilotinib;細胞凋亡;上皮間質轉化
英文關鍵字:Anaplastic thyroid cancer;Nilotinib;Apoptosis;Epithelial mesenchymal transition
Abstract
甲狀腺未分化癌(Anaplastic Thyroid Carcinoma;ATC)是極為惡性腫瘤之一,在甲狀腺癌當中雖只占其1-2%,但卻占甲狀腺癌中14-50%的死亡率;病人通常在診斷後發現其平均存活率都少於六個月以下。對於ATC目前臨床上並無有效治療之方式,ATC易轉移是預後不良主要原因。因此,開發具有誘導細胞凋亡並抑制ATC細胞轉移能力的藥物是一個重要的課題。在本篇研究中使用兩種酪胺酸激酶抑制劑分別為Imatinib (STI 571)及 Nilotinib (AMN) 並利用於兩株ATC細胞株SW1736及KAT4B。在細胞存活率實驗結果顯示,AMN對於兩個ATC細胞株毒殺能力較高。投與AMN藥物至ATC細胞株,觀察到細胞凋亡特徵如DNA斷片、二倍體細胞 (hypodiploid cells)、凋亡小體、caspase 3 及PARP的蛋白質裂解。ATC細胞投與AMN時,會引發內質網壓力發生,使用DiOC6染料檢測粒線體膜電位的變化。檢測到粒線體膜電位下降,表示細胞膜被破壞,因此Bcl-2蛋白的表現下降。ATC細胞投與PERK抑制劑GSK2602414後,會顯著抑制由AMN所誘導的細胞凋亡。此外,在ATC轉移過程中,上皮間質轉化(EMT)扮演重要角色。本研究亦發現,給予AMN低劑量下,能夠抑制ATC細胞N-cadherin蛋白表現與減少細胞的爬行及侵襲能力。利用裸鼠的動物模式,結果證明與細胞實驗結果相同。上述結果說明,AMN具有誘導ATC細胞凋亡及抑制轉移的潛力。
URI
https://203.71.86.71/handle/123456789/57576

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