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  5. 新型核醣核酸還原酶M2抑制劑COH29誘導大腸癌細胞死亡之分子機制探討
 
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新型核醣核酸還原酶M2抑制劑COH29誘導大腸癌細胞死亡之分子機制探討

Other Title
Elucidation of the molecular mechanism of a novel ribonucleotide reductase M2 inhibitor COH29-induced cell death in colon cancer cells
Type
thesis
Date Issued
2023-07-13
Author(s)
葉雲萱
Advisor
黃翠琴
Subjects
系所名稱:癌症生物學與藥物研發研究所碩士班
Description
學位別:碩士
語文別:中文
口試委員:黃翠琴 HUANG, TSUI-CHIN;夏詩閔 HSIA, SHIH-MIN;張心儀 CHANG, HSIN-YI
授權範圍:網際網路,開放日期為2028-07-26
Abstract
癌症是導致國人死亡的主要原因之一,而大腸直腸癌(CRC)更是2020年全球死亡的三大原因之一。根據我國衛生福利部國民健康署調查顯示,大腸直腸癌發生與死亡率每年皆呈現快速增加的趨勢,位居所有癌症的發生率及死亡率的第二或第三名。儘管目前國內對於大腸直腸癌的藥物研發及研究持續地進行,但高死亡率仍為目前最大的挑戰。核糖核苷酸還原酶(RNR)由核糖核苷酸還原酶 M2(RRM2)與核糖核苷酸還原酶 M1(RRM1)所構成,是催化核糖核苷二磷酸(NDP)形成2'-脫氧核糖核苷二磷酸(dNDP)的酵素。之前的研究顯示, RRM2 在 DNA 合成、細胞生長、轉移以及腫瘤細胞的耐藥性扮演關鍵性的作用,並可能是一個理想的大腸癌的檢測和預後不良的指標。先前開發的 RNR 抑制劑 COH29 會透過抑制 RRM1 和 RRM2 的結合進而抑制 RNR 的活性,且已有文獻顯示其具有抗癌效果,但其詳細作用機制目前尚未未釐清。因此本研究主要目標:利用系統生物學方法全面性瞭解及探討 COH29 在大腸直腸癌中的抗癌效果及分子機轉。初步研究結果證實 COH29 能夠有效抑制癌細胞的存活及聚落形成的能力,並且影響癌細胞粒線體的膜電位達到抑制癌細胞生存。經由轉錄體學的分析結果發現 COH29 會影響 p53 參與的調控路徑,以及活化細胞凋亡的基因表現,結果將深入了解 COH29 抑癌的作用機制,有助於發展新的大腸直腸癌治療方法。
URI
https://handle.ncl.edu.tw/11296/94smjd
https://203.71.86.71/handle/123456789/10107

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