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  5. 探討新型鋅指蛋白基因家族在結腸直腸癌中扮演的角色
 
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探討新型鋅指蛋白基因家族在結腸直腸癌中扮演的角色

Other Title
Study on the roles of a novel zinc finger gene family in colorectal cancer
Type
thesis
Date Issued
2012-07-18
Author(s)
邱唯榕
Advisor
鍾文彬
Subjects
系所名稱:醫學科學研究所
Publisher
醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:鍾文彬
共同指導教授:林時宜
口試委員:梁有志;葉添順;張懿欣
中文關鍵字:新型鋅指蛋白
Abstract
近年來有研究顯示新穎的CCCH type鋅指蛋白家族(zinc finger protein family)是吞噬細胞活化的負向調節因子。而經過廣泛的基因體的研究發現總共存在老鼠體內有58個新穎CCCH type鋅指蛋白基因,人類有55個,但尚未被完整分類與分析其功能。老鼠的58個新穎CCCH type鋅指蛋白家族分為六群。目前已發現老鼠的58個鋅指蛋白家族中,有32個是未知的,其他26個是已知的蛋白,其中有20個蛋白被研究出和RNA代謝相關,包括與mRNA剪接、mRNA的運送、以及mRNA的穩定性和分解相關,另外6個蛋白是牽涉到轉錄(Transcription)、泛素化作用(Ubiquitination)、二磷酸腺苷核糖多聚化(Poly-ADP-Ribosylation)有關。有3個CCCH type鋅指蛋白分別為BC003883、BC019429、以及Zfp36l3被發現只存在於老鼠體內,在人類沒有這三個鋅指蛋白。研究顯示ZC3H12D在癌症中可能扮演腫瘤抑制基因(tumor suppressor gene);然而,目前人類大部分CCCH type鋅指蛋白的功能或在癌症方面扮演的角色是尚未深入了解的。因此,我們想探討新穎CCCH type鋅指蛋白家族和結腸直腸癌的相關性。本實驗中我們收集臨床結腸直腸癌組織檢體利用qRT –PCR方法篩選CCCH type鋅指蛋白mRNA表現量,發現ZC3HAV1L在結腸直腸癌的組織中比正常組織有相對高的表現量。接著進一步探討ZC3HAV1L對於結腸直腸癌細胞的影響,利用慢病毒(lentivirus)方法建立ZC3HAV1L knockdown stable cell line以及過度表現ZC3HAV1L於結腸直腸癌細胞,我們發現高度表現ZC3HAV1L會增加結腸直腸癌細胞增生及cell migration的情形;而抑制ZC3HAV1L的表現會減少結腸直腸癌細胞增生及cell migration的情形。由此得知,ZC3HAV1L可能在結腸直腸癌中扮演促進細胞增生的角色。
URI
https://203.71.86.71/handle/123456789/11109

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