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  5. 利用虛擬篩選策略開發針對Class IIa型組蛋白去乙醯酶之非異羥肟酸選擇性標靶抑制劑
 
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利用虛擬篩選策略開發針對Class IIa型組蛋白去乙醯酶之非異羥肟酸選擇性標靶抑制劑

Other Title
Discovery of Non-hydroxamate Inhibitors Selectively Targeting Class IIa HDACs by Exploiting Virtual Screening Strategy
Type
thesis
Date Issued
2016-07-12
Author(s)
劉昌邑
Advisor
黃偉展
許凱程
Subjects
系所名稱:生藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:黃偉展
共同指導教授:許凱程
口試委員:張崇毅;許銘仁;王皓青
中文關鍵字:組蛋白去乙醯酶分子嵌合;抑制劑
英文關鍵字:HDAC;docking;inhibitor
Abstract
組蛋白去乙醯酶 (histone deacetylases, HDACs) 為調控表觀遺傳調控之一種酵素群,組蛋白去乙醯酶可由其同源性、催化活性、組織分佈分成四類,其中Class IIa型組蛋白去乙醯酶被認為在許多疾病中扮演重要角色,如癌細胞發展、糖尿病腎病變、發炎性疾病、神經退化性疾病等疾病中扮演重要角色,因此被認為是重要藥物標靶。大多數的組蛋白去乙醯酶抑制劑都包含異羥肟酸的結構,用來熬合組蛋白去乙醯酶活性部位的鋅離子,但是異羥肟酸具有不佳的藥物動力學表現以及較強的細胞毒性等問題,再者,以異羥肟酸為主的組蛋白去乙醯酶抑制劑對於組蛋白去乙醯酶的四個分類沒有選擇性,因此延伸出許多副作用。本研究主要以分子嵌合模擬方法,透過電腦虛擬篩選(Virtual screening)分析發展出6個新的非異羥肟酸組蛋白去乙醯酶抑制劑,對Class IIa型組蛋白去乙醯酶展現出抑制活性(IC50 <10 μM),而對Hela nuclear extract (包含HDAC1, HDAC2, HDAC3)組蛋白去乙醯酶則沒有顯著抑制活性,可以顯示出這些抑制劑對Class IIa型組蛋白去乙醯酶具有選擇性,我們相信本研究對研發低副作用之非異羥肟酸組蛋白去乙醯酶抑制劑非常有發展潛力。
URI
https://203.71.86.71/handle/123456789/57446

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