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  5. D-antroquinonol及Antroquinonol 對非小細胞肺癌之細胞具有抗癌作用
 
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D-antroquinonol及Antroquinonol 對非小細胞肺癌之細胞具有抗癌作用

Other Title
D-antroquinonol and Antroquinonol Induce Anticancer Effects on Non-Small Cell Lung Cancer Cell Lines
Type
thesis
Date Issued
2013-05-28
Author(s)
顏怡婷
Advisor
林若凱
Subjects
系所名稱:藥學院生技製藥產業碩士專班
Description
學位別:碩士
語文別:中文
指導教授:林若凱
共同指導教授:邱士娟
口試委員:阮麗容;王憶卿;劉興璟
中文關鍵字:肺癌;D-antroquinonol;antroquinonol
Abstract
肺癌為全世界癌症死亡人口數中比例最高的癌症。造成肺癌發生的其中一種機制為表遺傳學改變,如DNA甲基化。當DNA序列上發生不正常甲基化時可能致癌基因活化或腫瘤抑制基因靜默,進而導致癌症的發生。當CpG 島內的胞嘧啶 (cytosine)被DNA甲基轉移酵素甲基化時可能會抑制DNA轉錄功能。甲基轉移酵素在文獻中被指出有過度表現現象,進而使腫瘤抑制抑制基因過度甲基化。本次實驗以DNMT1及DNMT3B兩種酵素活性進行數十種天然物篩選,其中對DNMT1具有酵素抑制潛力的有D-antroquinonol。而在研究中所使用的D-antroquinonol及antroquinonol是由臺灣牛樟芝固態培養液中純化而得。文獻指出,Antroquinonol 在其他癌細胞中具有抗癌作用,D-antroquinonol為Antroquinonol類似物,目前尚未發表過,是為一全新的化合物。此研究目標主要為探討給予數種肺癌細胞兩種化合物後,對癌細胞的存活率及爬行能力的影響,進而與腫瘤抑制基因的DNA甲基化程度改變、RNA和蛋白質表現量之關聯性。
根據實驗結果,給予CL1-5肺癌細胞兩種化合物後,在細胞爬行能力測試中發現,具有抑制癌細胞爬行能力。在細胞毒性試驗,D-antroquinonol與現行DNA甲基轉移酵素抑制劑azacitidine相比在數種肺癌細胞中更具有專一性,且對正常肺細胞高濃度給予下不會影響。D-antroquinonol不管時間依賴或是劑量依賴方式在CL1-5肺癌細胞均可使cyclin D2 (CCND2)基因的mRNA表現量增加,並可使細胞週期停留在G0/G1期。除此之外,當我們在H1299細胞中將CCND2基因進行siRNA轉染作用,細胞爬行能力增加。
根據上述實驗結果,我們推測D-antroquinonol為一具有抗癌潛力之藥物,並可抑制癌細胞爬行能力及增加CCND2基因表現量。
URI
https://203.71.86.71/handle/123456789/14076

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