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  5. 利用HCT116大腸癌細胞探討新穎HDAC inhibitor WMJ-8-005之抗腫瘤機轉
 
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利用HCT116大腸癌細胞探討新穎HDAC inhibitor WMJ-8-005之抗腫瘤機轉

Other Title
Anti-tumor mechanisms of WMJ-8-005, a novel HDAC inhibitor, in HCT116 colorectal cancer cells
Type
thesis
Date Issued
2015-07-03
Author(s)
王蓉映
Advisor
許銘仁
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:許銘仁
共同指導教授:
口試委員:陳彥州;陳明仁
中文關鍵字:大腸直腸癌;腫瘤
英文關鍵字:colorectal cancer,CRC;carcinoma
Abstract
近年來越來越多的研究指出抑制組織蛋白去乙醯酶 (HDACs)會誘導多種轉型細胞停止生長、衰老以及死亡,相較於轉型細胞而言,正常細胞中對於針對HDAC抑制所造成之死亡較具抵抗性。為了發展用以抑制腫瘤細胞增生的新穎組織蛋白去乙醯酶抑制劑 (Histone deacetylase inhibitors,HDACi),我們新合成ㄧ系列的組織蛋白去乙醯酶抑制劑,即命名為WMJ-8化合物,並利用HCT116大腸直腸癌細胞探討WMJ-8化合物之抗癌機轉。於WMJ-8化合物之中,WMJ-8-005誘導HCT116大腸直腸癌細胞組織蛋白乙醯化程度增加與細胞凋亡之效果最佳,我們於是進一步探討WMJ-8-005之抗癌機制。WMJ-8-005會造成PARP和caspase3蛋白的活化,並降低survivin和cyclin D1之蛋白表現,伴隨著p21cip/Waf1蛋白表現增加,而上述結果與p53蛋白之修飾作用相關。此外,WMJ-8-005也會隨著時間誘導AMPK和p38MAPK磷酸化程度增加。另一方面,WMJ-8-005會誘導tubulin的乙醯化程度增加。在HCT116腫瘤異種移植動物模式中也可以發現WMJ-8-005會抑制腫瘤的生長。根據上述實驗結果顯示,WMJ-8-005會透過活化p53訊息路徑而影響p21cip/Waf1、cyclin D1與survivin之表現,最終造成HCT116大腸直腸癌細胞之死亡。
URI
https://203.71.86.71/handle/123456789/57178

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