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  5. 探討新型CLK4抑制劑在人類膽管癌中對 mRNA 剪接的藥理作用機制
 
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探討新型CLK4抑制劑在人類膽管癌中對 mRNA 剪接的藥理作用機制

Other Title
Investigation of the pharmacological mechanisms of a novel CLK4 inhibitor on mRNA splicing in human cholangiocarcinoma
Type
thesis
Date Issued
2025-06-23
Author(s)
許家銘
Advisor
潘秀玲
Subjects
系所名稱:臨床基因體學暨蛋白質體學碩士學位學程
Publisher
臨床基因體學暨蛋白質體學碩士學位學程
Description
學位別:碩士
口試委員:潘秀玲; 許凱程; 皇甫維君
關鍵字:膽管癌、RNA選擇性剪接、Cdc2-like kinase 4(CLK4)、細胞週期、p53路徑
Abstract
膽管癌為發生於膽管上皮細胞的癌症,由於早期無症狀及高度侵略性,導致其發生率與死亡率持續偏高。此外,因診斷困難進一步限制治療選擇並影響預後,面對這些挑戰,新藥開發已成為迫切需求,其中RNA splicing異常已被證實與膽管癌病理機制密切相關,影響了細胞生長、分化、凋亡與訊號傳遞,這類異常不僅揭示了疾病進展的分子基礎,亦提供新的標靶治療策略。CLKs kinase作為重要激酶,能夠藉由磷酸化SR蛋白質進而調控RNA剪接,進一步影響腫瘤生成、轉移及惡化。本研究中透過CRISPR-Cas9基因剔除技術,將膽管癌細胞剔除CLK4基因後,其腫瘤生長速率明顯下降,證實CLK4對於腫瘤生長扮演關鍵角色,並以CLK4為靶點,開發影響RNA選擇性剪接機制之抑制劑,提升膽管癌的治療成效。研究中使用docking model及深度學習的方式設計與合成有效抑制CLK4活性的抑制劑,並進行細胞及動物實驗驗證其確效性。TMU-K-0506作為新穎性的CLK4抑制劑,能夠抑制SR蛋白質的磷酸化,進而調控選擇性剪接,並影響基因表達。此外,TMU-K-0506亦證實透過誘發caspase路徑造成細胞凋亡,有效抑制人類膽管癌HuCC-T1及RBE細胞生存活。根據定序結果顯示,TMU-K-0506有效影響G2/M期及p53路徑相關基因之選擇性剪接,進而調控基因表現並抑制癌細胞生長。此外,TMU-K-0506與化療藥吉西他濱合併使用時呈現出協同作用,且在腫瘤動物模式中明顯延緩腫瘤生長,顯示其具備做為合併治療策略之臨床應用價值。本篇研究不僅證明了TMU-K-0506能夠調控RNA選擇性剪接並抑制癌細胞生長,同時也證明了CLK4抑制劑能夠作為一個新型的膽管癌治療策略並改善治療效果。
URI
https://203.71.86.71/handle/123456789/9284

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