English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 45422/58598 (78%)
造訪人次 : 2537279      線上人數 : 219
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://libir.tmu.edu.tw/handle/987654321/57049


    題名: 抗寄生蟲藥物氯硝柳胺抗登革病毒感染的分子機制
    Molecular Mechanism of Antiparasitic Niclosamide against Dengue Virus Infection
    作者: 高若綺
    Kao, Jo-Chi
    關鍵詞: 登革病毒;氯硝柳胺;內吞小體酸化作用;哺乳動物雷帕黴素靶蛋白;複製
    Dengue virus;Niclosamide;Endosomal acidification;mTOR;Replication
    日期: 2018
    上傳時間: 2019-01-02 12:18:05 (UTC+8)
    摘要: 抗寄生蟲藥物氯硝柳胺被證實能抑制由蚊蟲媒介茲卡病毒的感染。本研究中,我們利用體外細胞及體內動物模式探討氯硝柳胺對抗登革病毒感染的效果。氯硝柳胺可有效地阻擋登革病毒感染人類肺腺癌細胞 (A549)、小鼠神經母細胞瘤細胞 (Neuro-2a) 以及幼倉鼠腎臟纖維母細胞 (BHK-21)。初步結果顯示氯硝柳胺不影響病毒感染進入細胞、宿主細胞因應感染生成第一型干擾素反應以及不直接影響病毒轉錄體的轉譯作用。氯硝柳胺已知可抑制mTOR、STAT3以及NF-κB訊息路徑,但利用各自的選擇性抑制劑卻無法降低登革病毒感染,故而推測氯硝柳胺應藉由其他方式抑制登革病毒感染。如同vacuolar ATPase的抑制劑巴佛洛霉素A1,氯硝柳胺以及其他的質子載體 (例如 CCCP以及FCCP) 皆能有效地抑制細胞內吞小體的酸化並減少病毒核糖核酸複製以達到降低登革病毒感染之作用。利用腦內合併腹腔注射登革病毒感染出生七天大的ICR-哺乳期小鼠,結果顯示單一劑量的氯硝柳胺能部份降低小鼠腦內的病毒量、病毒性腦炎以及小鼠死亡率。本研究結果證實氯硝柳胺透過阻擋細胞內吞小體的酸化作用進而降低登革病毒的感染。
    Antiparasitic niclosamide has been demonstrated to inhibit the arthropod-borne Zika virus. Here we investigated the antiviral ability of niclosamide against dengue virus (DENV) serotype 2 infection in vitro and in vivo. Administration of niclosamide effectively retarded DENV-induced infection in vitro in human lung adenocarcinoma cells (A549), mouse neuroblastoma cells (Neuro-2a), and baby hamster kidney fibroblasts (BHK-21). Treatment of niclosamide did not retard the endocytosis of DENV or the antiviral type I interferon response. Furthermore, niclosamide did not cause a direct effect on viral replicon-based expression. Niclosamide has been reported to competitively inhibit the mTOR (mammalian target of rapamycin), STAT3 (signal transducer and activator of transcription 3), and NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) signaling pathways; however, selective inhibitors of those pathways did not reduce DENV infection. Similar to the vacuolar-type H+-ATPase inhibitor bafilomycin A1, both niclosamide and other protonophores such as CCCP (carbonyl cyanide m-chlorophenyl hydrazone), and FCCP (carbonyl cyanide-p-trifluoromethoxyphenylhydrazone) effectively reduced endosomal acidification and viral dsRNA replication. Co-administration of single dose of niclosamide partly decreased viral replication, viral encephalitis, and mortality in DENV-infected ICR suckling mice. These results demonstrate that niclosamide diminishes DENV infection by hindering endosomal acidification.
    描述: 碩士
    指導教授:林秋烽
    資料類型: thesis
    顯示於類別:[醫學科學研究所] 博碩士論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML184檢視/開啟


    在TMUIR中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    著作權聲明 Copyright Notice
    • 本平台之數位內容為臺北醫學大學所收錄之機構典藏,包含體系內各式學術著作及學術產出。秉持開放取用的精神,提供使用者進行資料檢索、下載與取用,惟仍請適度、合理地於合法範圍內使用本平台之內容,以尊重著作權人之權益。商業上之利用,請先取得著作權人之授權。

      The digital content on this platform is part of the Taipei Medical University Institutional Repository, featuring various academic works and outputs from the institution. It offers free access to academic research and public education for non-commercial use. Please use the content appropriately and within legal boundaries to respect copyright owners' rights. For commercial use, please obtain prior authorization from the copyright owner.

    • 瀏覽或使用本平台,視同使用者已完全接受並瞭解聲明中所有規範、中華民國相關法規、一切國際網路規定及使用慣例,並不得為任何不法目的使用TMUIR。

      By utilising the platform, users are deemed to have fully accepted and understood all the regulations set out in the statement, relevant laws of the Republic of China, all international internet regulations, and usage conventions. Furthermore, users must not use TMUIR for any illegal purposes.

    • 本平台盡力防止侵害著作權人之權益。若發現本平台之數位內容有侵害著作權人權益情事者,煩請權利人通知本平台維護人員([email protected]),將立即採取移除該數位著作等補救措施。

      TMUIR is made to protect the interests of copyright owners. If you believe that any material on the website infringes copyright, please contact our staff([email protected]). We will remove the work from the repository.

    Back to Top
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋