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  5. 阿茲海默症模型細胞中AHI1的角色
 
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阿茲海默症模型細胞中AHI1的角色

Other Title
Role of Abelson Helper Integration Site-1 in
Alzheimer’s disease model cells
Type
thesis
Date Issued
2015-06-30
Author(s)
Ngo Thi Huong
Advisor
林詠峯
Subjects
系所名稱:醫學檢驗暨生物技術學系所
Description
學位別:碩士
語文別:英文
指導教授:林詠峯
共同指導教授:
口試委員:陳連城;林榮俊
中文關鍵字:阿茲海默氏症;亨廷頓關聯蛋白-1;埃布爾森輔助整合位點1;類澱粉前驅蛋白
英文關鍵字:Alzheimer’s disease;AHI1;HAP1;APP;Neuro-2a
Abstract
阿茲海默氏症(AD)是最常見的老人癡呆類型。它的特點是類澱粉蛋白斑塊和神經纖維糾結堆積在大腦,引起腦細胞死亡,導致記憶喪失和行為改變。最近的研究顯示,參與微管依賴性運輸的亨廷頓關聯蛋白-1(HAP1),是AD 發病關鍵的類澱粉前驅蛋白(APP)運送時所需。我們之前的結果進一步發現,一個HAP1 交互作用蛋白,其突變會導致神經精神障礙的埃布爾森輔助整合位點1(AHI1)顯著減少於AD 患者血清中,這表明AHI1 與APP的活性可能有關。我們推測,AD 發病是由AHI1 相關障礙所導致的。為了檢驗這一假設,我們從小鼠神經母細胞瘤細胞株Neuro-2A 建立了細胞模型,模擬AD 發病。監測了APP 基因(野生型APP695 或突變型APPswe/ind)轉染的細胞的生存能力和AHI1-APP 的交互作用。APP 過度表達促進了細胞的分化並減緩了細胞生長;然而,突變的APP 可能因APP 碎解增加而降低其促進細胞分化與存活的能力。的確,突變的APP 增加了對AHI1 的結合,而減少AHI1 和HAP1 在細胞中的含量。而當AHI1 被shRNA 緘默之後,不管野生型或突變型的APP 都裂解升高,以致細胞生存力下降。這些結果說明AHI1 在APP 相關的AD 發病機制中扮演重要角色。AHI1 不僅是診斷也是用於治療AD 的潛在生物標誌。
URI
https://203.71.86.71/handle/123456789/57239

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