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  5. 樹突狀細胞DC-SIGN辨認鼻咽癌細胞上醣化Annexin A2
 
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樹突狀細胞DC-SIGN辨認鼻咽癌細胞上醣化Annexin A2

Other Title
Dendritic cells recognize glycosylated Annexin A2 on nasopharyngeal carcinoma cells through DC-SIGN
Type
thesis
Date Issued
2013-07-18
Author(s)
許庭睿
Advisor
陳建和
Subjects
系所名稱:醫學檢驗暨生物技術學系
Description
學位別:碩士
語文別:英文
指導教授:陳建和
共同指導教授:林詠峯
口試委員:鄭朝文;葉劭德;廖辰中
中文關鍵字:鼻咽癌;樹突狀細胞;樹突狀細胞上的特異性細胞間黏附分子-3-辨認非整合素
Abstract
鼻咽癌是一種盛行於東南亞地區包括台灣的惡性上皮細胞癌。目前治療鼻咽癌主要的方式透過放射性以及化學性治療,但是往往會造成正常組織及細胞的損壞,因此發展鼻咽癌專一性的免疫治療是值得一試的。許多研究中指出樹突狀細胞對於免疫抗癌扮演相當重要的角色,然而樹突狀細胞上的特異性細胞間黏附分子-3-辨認非整合素(DC-SIGN)是樹突狀細胞上一種C型凝集素(C-type lectin),它可以辨認腫瘤細胞膜上特殊的醣類結構進而調節樹突狀細胞逃避相關免疫機制。在本研究中我們發現鼻咽癌TW01細胞上確實有DC-SIGN可辨認的配體(ligand),當樹突狀細胞被鼻咽癌細胞或內含物處理過後,其免疫抑制性的介白素(IL)-10生產增加並延緩成熟。接下來我們用免疫沈澱法從鼻咽癌細胞上找到了DC-SIGN的可能配體annexin A2。當annexin A2的表達或功能被阻斷時,鼻咽癌細胞對DC-SIGN的結合能力和樹突狀細胞生產IL-10的能力都下降了,這表示鼻咽癌細胞對樹突狀細胞的免疫抑制調控是特異地透過DC-SIGN和annexin A2的交互作用。最後我們發現鼻咽癌細胞上的annexin A2和其它含甘露醣的N-乙醯聚醣對於DC-SIGN的活化相當重要。Annexin A2是鼻咽癌免疫治療上很有潛力的腫瘤標的。
URI
https://203.71.86.71/handle/123456789/13987

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