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  5. 熱休克蛋白90抑制劑AUY922對於發炎反應的免疫調控
 
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熱休克蛋白90抑制劑AUY922對於發炎反應的免疫調控

Other Title
Immunomodulation of HSP90 inhibitor NVP-AUY922 on the inflammatory response
Type
thesis
Date Issued
2014-07-15
Author(s)
賈志元
Advisor
呂思潔
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:呂思潔
共同指導教授:
口試委員:商惠芳;劉柯俊
中文關鍵字:熱休克蛋白90;AUY922;發炎反應;巨噬細胞
Abstract
熱休克蛋白90是一種伴隨蛋白,經由與目標蛋白結合後幫助目標蛋白摺疊成正確的蛋白質結構,可以調控細胞週期、自我凋亡和訊息傳遞,這些都跟癌症有關,例如:細胞存活、增生、侵犯、轉移及血管新生,所以目前有多種Hsp90抑制物正在人體試驗,評估是否能治療癌症。本篇所研究的AUY922是一種熱休克蛋白90的抑制劑,會與熱休克蛋白90α上的ATP 結合位結合,以達到抑制的作用。已知AUY922可減低多種癌症腫瘤大小,例如:胃癌(gastric cancer)、多發性骨髓瘤(multiple myeloma)、乳癌(breast cancer)、前列腺癌(prostate cancer)及實質固態瘤(solid tumor)等,而AUY922正在人體試驗中被研究是否能治療這些癌症。
過去的文獻中指出熱休克蛋白90抑制劑會抑制發炎反應中的訊息傳遞因子,減少前發炎激素的表現量,藉此降低發炎反應。本篇利用PMA誘導THP-1細胞分化為巨噬細胞,再用LPS活化巨噬細胞,藉此觀察AUY922對巨噬細胞以及巨噬細胞活化過程的影響。我們使用沒有細胞毒性的AUY922濃度,在巨噬細胞及活化過程中發現,AUY922能有意義的減少前發炎激素IL-1β表現量,但不影響IL-8、IL-10、TNF-α的表現量,也會增加熱休克蛋白70表現量,但磷酸化的GSK-3(Ser21/9)則無明顯變化,也不會影響活性氧化物的表現量。在巨噬細胞活化的過程中,AUY922可以減少MMP-9的分泌量,但不會影響MMP-2的分泌量,也不會影響巨噬細胞的細胞表面分子。在敗血症小鼠模式中AUY922會減少IL-6、IL-10、IL-12p70、IFN-γ、MCP-1的表現量,也會減少體重下降的幅度。總之,AUY922在細胞及小鼠中都能減少發炎反應的產生。
URI
https://203.71.86.71/handle/123456789/56854

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