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  5. Casein kinase 2α媒介Interleukin-6誘導人類肺纖維母細胞結締組織生長因子表現之角色探討
 
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Casein kinase 2α媒介Interleukin-6誘導人類肺纖維母細胞結締組織生長因子表現之角色探討

Other Title
Studies on the role of casein kinase 2α mediated interleukin-6-induced connective tissue growth factor expression in human lung fibroblasts
Type
thesis
Date Issued
2023-07-13
Author(s)
莊沛儒
Advisor
林建煌 ; 陳炳常
Subjects
系所名稱:醫學科學研究所碩士班
Description
學位別:碩士
語文別:中文
口試委員:林建煌 LIN, CHIEN-HUANG;陳炳常 CHEN, BING-CHANG;黃聰龍 HWANG,TSONG-LONG;許銘仁 HSU, MING-JEN;蕭哲志 HSIAO, GEORGE
授權範圍:網際網路,開放日期為2023-07-25
Abstract
約有10 %的氣喘患者對類固醇治療無反應,並伴隨嚴重的呼吸道重塑及呼吸道阻塞,被定義為嚴重氣喘(severe asthma, SA)。先前有研究指出Interleukin-6 (IL-6)參與在發炎反應及肺部纖維化。Casein kinase 2 (CK2)透過調控β-catenin signaling參與在bleomycin (BLM)誘導的小鼠肺纖維化中。Ying Yang 1 (YY1)在特發性肺纖維化(idiopathic pulmonary fibrosis, IPF)患者中過度表現。但在IL-6誘導CTGF表現的途徑中,CK2及YY1的分子機制仍不清楚。因此我們將探討在人類肺纖維母細胞中,CK2及YY1調控IL-6誘導CTGF表現之角色。在本研究中,我們發現在人類肺纖維母細胞中,CK2抑制劑apigenin抑制IL-6誘導的CTGF表現有濃度關係,且轉染CK2α、CK2α’以及CK2β的siRNA都會抑制IL-6誘導的CTGF表現。進一步研究發現IL-6誘導CK2β以及CK2α/α’磷酸化,且轉染CK2β siRNA可以抑制CK2α及CK2α’磷酸化。利用免疫螢光染色法發現,在IL-6刺激後CK2α會由細胞質進入細胞核中,而CK2α’以及CK2β則不會。此外,轉染YY1 siRNA後能夠抑制IL-6誘導的CTGF表現,進一步發現IL-6可誘導YY1磷酸化。接續利用共同免疫沉澱法發現,在IL-6刺激後CK2α會與YY1結合形成complex,而CK2α’與CK2β則不會與YY1結合。我們進一步利用染色質免疫沉澱法發現以IL-6刺激後CK2α及YY1會結合在CTGF promoter上的YY1 binding site,CK2α’與CK2β則不會。綜上所述,在人類肺纖維母細胞中,IL-6透過活化CK2α及YY1,並使CK2α及YY1形成complex,結合至CTGF promoter上,進而促進CTGF表現。說明CK2α及YY1可能是未來發展肺纖維化治療的標的。
URI
https://handle.ncl.edu.tw/11296/62nbxx
https://203.71.86.71/handle/123456789/10253

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