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  5. 高度表現葡萄糖運輸蛋白3促進大腸直腸癌的侵犯能力
 
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高度表現葡萄糖運輸蛋白3促進大腸直腸癌的侵犯能力

Other Title
Elevation of Glucose Transporter 3 Promotes Invasiveness of Colorectal Cancer
Type
thesis
Date Issued
2017-06-28
Author(s)
郭智嘉
Advisor
林政緯
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:林政緯
口試委員:吳漢忠;何元順
中文關鍵字:大腸直腸癌;癌症轉移;葡萄糖;Glut3;YAP
英文關鍵字:Colorectal cancer;Cancer metastasis;Glucose;Glut3;YAP
Abstract
大腸直腸癌為發生率和癌症死因皆是第三位的癌症,是相當嚴重的疾病,而大腸癌的轉移會使疾病的進程與預後惡化。癌細胞的異常增殖最終將導致癌症轉移,近期研究指出癌症的異常代謝在其中扮演著相當重要的角色,癌細胞透過有氧糖解 (Warburg effect)快速產生ATP,促進癌症的異常增殖。我們分析大腸直腸癌患者轉移前後基因表現差異,發現Glucose transporter 3 (Glut3)在轉移的組別中大量表現,而且Glut3的表現量與癌症的惡性程度呈現正相關,但Glut3在大腸直腸癌轉移中參與的機制仍待釐清。我們研究結果顯示,具高度轉移特性的HCT116-LM相較於HCT116擁有較高的Glut3表現和糖解酵素基因表現,使用shRNA抑制Glut3後,同時發現癌細胞爬行力、侵襲力和幹細胞特性的下降。另外,高濃度glucose的刺激下發現誘導Yes associated protein (YAP)活化,而抑制Glut3後也看到YAP的轉錄活性降低。此外,加入糖解抑制劑2-Deoxyglucose (2-DG)則觀察到YAP和Glut3的表現量同時下降。進一步利用YAP抑制劑、YAP shRNA與染色質免疫沉澱實驗證實YAP可調控Glut3基因表現。綜合上述結果顯示,高度表現Glut3能透過YAP之間的正向調控迴路促進大腸直腸癌的惡性發展與轉移。
URI
https://203.71.86.71/handle/123456789/57897

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