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  5. PAK1在CXCL12刺激人類纖維母細胞結締組織生長因子(CTGF)表現的訊息傳遞路徑探討
 
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PAK1在CXCL12刺激人類纖維母細胞結締組織生長因子(CTGF)表現的訊息傳遞路徑探討

Other Title
Studies on the role of PAK1 in CXCL12-induced CTGF expression in human lung fibroblasts
Type
thesis
Date Issued
2018-07-13
Author(s)
黃鈺雅
Advisor
林建煌
何元順
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:林建煌
共同指導教授:何元順
口試委員:王應然;陳彥州;潘敏雄
中文關鍵字:肺部纖維化;結締組織生長因子;人類纖維母細胞
英文關鍵字:Fibrosis;Signal Transduction;Cloning;CTGF;PAK1
Abstract
台灣的肺部纖維化患者的預後存活率皆偏低,因為肺部纖維化是一種不可逆的纖維化疾病。為了有效的提升台灣肺部纖維化患者的確診後存活率,從各種呼吸道疾病皆有大量表現的因子作為研究目標,是有效的基礎研究方向。CXCL12是一種基質細胞衍生因子,在缺氧的肺部組織當中能夠刺激肺部纖維化的重要生物標的人類結締組織(CTGF)的表現量。
過去的研究曾發現,CXCL12與肌纖維母細胞的沈積有相當程度的關聯性,而陸續有肺部纖維化的動物疾病模式(Bleomycin)研究結果指出,CXCL12 能夠召集纖維球細胞(Fibrocyte)到肺部損傷的區域,並指出纖維球細胞對於肺部膠原蛋白的沈積有一定程度的關聯性,而Cdc42, Rac1, Rho 三者都是細胞遷移(Cell Migration)當中的重要角色,其中 Cdc42 負責調節細胞移動的方向、Rac1 負責調節膜的凸起(membrane protrusion),以利板狀偽足(lamellipodia)的產生,Rho則是負責細胞本體的收縮(cell body contraction)。而 PAK1(P21-Activated Kinase1)是一個依賴 Rac1、Cdc42 激活的蛋白,他具有與 Rac1、Cdc42 特化性結合區域,對於細胞遷移有調節作用,但在肺部纖維化疾病當中卻鮮少被討論到。本研究藉由理解 CXCL12、PAK1 對於 CTGF 表現量的調節,找到相對應的訊息傳遞路徑、參與的轉錄因子成員,確認 PAK1、Akt、Erk 三者參與協調 CTGF 的表現量,因此,透過研究這三者的訊息傳遞路徑,能夠協助特發性肺部纖維化疾病研究的進展。
URI
https://203.71.86.71/handle/123456789/58276

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