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  5. 纖維細胞對於非小細胞肺癌疾病進程之影響
 
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纖維細胞對於非小細胞肺癌疾病進程之影響

Other Title
The Effects of Fibrocytes on Disease Progression
in Non-Small Cell Lung Cancer
Type
thesis
Date Issued
2015-07-14
Author(s)
張雅玲
Advisor
施純明
李岡遠
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:施純明
共同指導教授:李岡遠
口試委員:葉添順;林鴻銓;馮博皓
中文關鍵字:纖維細胞;非小細胞肺癌;腫瘤無惡化存活期;介白質-6
英文關鍵字:fibrocytes;NSCLC;PFS;IL-6
Abstract
行政院衛福部公布 2014 年國人肺癌死亡率位居惡性腫瘤第三位,其五年存活率僅 15%,因此研究肺癌相關之機轉是十分重要。過去研究顯示腫瘤相關纖維母細胞 (cancer associated fibroblasts, CAFs) 透過分泌生長因子、細胞激素進而幫助腫瘤細胞的生長及轉移,其來源之一為纖維細胞 (fibrocyte)。文獻指出纖維細胞在腫瘤轉移病人的血中數量會明顯增加,體外實驗亦證明其作用與腫瘤血管新生、造成宿主免疫抑制有關。本論文之結果發現纖維細胞數量多的病人其腫瘤無惡化存活期 (progression free survival, PFS) 較短,然而其分子調控機轉並不明確,因此本論文續探討纖維細胞在肺癌進程的可能機轉及其與藥物治療的關聯性。首先 in vitro transwell co-culture system 結果證實,與纖維細胞共存的肺癌細胞對抗癌藥 (CDDP) 之敏感性降低、細胞存活率增加。續以微珠免疫分析法及酵素連結免疫分析法偵測培養之上清液與血液中15種分泌性蛋白,顯示當與纖維細胞共存時,IL-6 表現量亦隨之增加,因此推測纖維細胞可能透過 IL-6 影響肺癌細胞對藥物的反應。利用流式細胞儀偵測結果顯示纖維細胞數量與病人的腫瘤無惡化存活期呈現負相關,與血液 IL-6 表現量則呈正相關,因此周邊血 IL-6 表現量將能做為ㄧ個推測病人治療效果的生物性指標。最後,分析 IL-6 的可能分子路徑,結果顯示纖維細胞存在時 Akt 蛋白上 Ser-473 位置會被磷酸化及抗凋亡蛋白 Bcl-2 表現量亦會增加。本研究發現,纖維細胞可能透過 IL-6 活化 Akt 蛋白及增加抗凋亡蛋白 Bcl-2 的表現,進而影響肺癌細胞對藥物的反應。上述成果指出纖維細胞或 IL-6 可做為預測肺癌病人腫瘤無惡化存活期之指標,藉此提供未來研究之新方向。
URI
https://203.71.86.71/handle/123456789/57195

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