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  5. 在酒精長期刺激人類肝癌細胞株Hep 3B的模式中,探討酒精誘發Tissue transglutaminase表達的分子機制
 
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在酒精長期刺激人類肝癌細胞株Hep 3B的模式中,探討酒精誘發Tissue transglutaminase表達的分子機制

Other Title
Study on the ethanol long-term stimulating Hep 3B model for examining the molecular mechanism of ethanol- induced tissue transglutaminase expression.
Type
thesis
Date Issued
2007-06-26
Author(s)
鄭自君
Advisor
何元順
Subjects
系所名稱:醫學檢驗生物技術學研究所
Description
學位別:碩士
語文別:中文
指導教授:何元順
共同指導教授:林時宜
口試委員:王朝鐘
中文關鍵字:酒精;肝癌;氧化壓力
Abstract
本研究主要探討在酒精長期處理的Hep 3B細胞株中,酒精誘發tissue transglutaminase(TGM2)表達的分子機制。TGM2具有多種功能,包括Ca2+-dependent transamidation,以催化蛋白質之間的cross- linkage,穩定細胞外基質蛋白或造成纖維化的發生;另外一個功能為 GTPase protein,作為訊息傳遞分子。在本研究中,比較不處理酒精的Hep 3B細胞株和酒精(0.06%)長期處理的Hep 3B細胞株時,可以發現在酒精長期處理的Hep 3B細胞株,其TGM2的mRNA和蛋白質皆有穩定的表現。在酒精長期處理下,欲知影響TGM2轉錄的轉錄因子,而文獻指出,NF-kappaB參與調控TGM2的表現,此外亦有文獻指出,受到酒精刺激,AP1、SP1會被活化並轉位到細胞核內,進而調控目標基因的表現。因此利用chromatin immunoprecipitation和核質分離,證明在酒精長期處理的Hep 3B細胞株中,調控TGM2 mRNA表現的轉錄因子為AP1、SP1,並非NF-kappaB。文獻指出,酒精會透過MAPK作為訊息傳遞路徑,特別是ERK pathway,在酒精長期處理的Hep 3B細胞株中,本研究證實酒精不是透過ERK的訊息傳遞路徑來誘導TGM2表現。
URI
https://203.71.86.71/handle/123456789/12173
https://hdl.handle.net/11296/96bu7m
File(s)
No Thumbnail Available
Name

C0183344.pdf

Size

7.78 MB

Format

Adobe PDF

Checksum

(MD5):4ba2f34c659598ce55f4664333974d58

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