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  5. 探討Methylprednisolone對於樹突狀細胞衍生和功能之影響
 
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探討Methylprednisolone對於樹突狀細胞衍生和功能之影響

Other Title
Study the Effect of Methylprednisolone on Generation and Functions of Dendritic Cell
Type
thesis
Date Issued
2006
Author(s)
林煥晴
Advisor
呂思潔
Subjects
系所名稱:細胞及分子生物研究所
Abstract
Methylprednisolone (MP) 是屬於人工合成的糖皮質類固醇,已知能夠降低NF-?B和MAP kinase的信號,並且降低發炎反應。樹突狀細胞在體內扮演主要的免疫調控者,能有效控制先天性和適應性免疫反應。過去的文獻也指出糖皮質類固醇能抑制經由周邊血液單核球細胞分化成樹突狀細胞,並且能延遲樹突狀細胞的成熟過程。本篇我們探討MP對於樹突狀細胞的影響,並且進一步探討MP是如何影響樹突狀細胞分化。實驗結果顯示在給予MP的未成熟樹突狀細胞中,能夠降低CD86和CD40表面蛋白的表現,增加CD14的表現量。而HLA-DR、CD80和CD83則沒有明顯的改變。值得注意的是MP主要是在早期影響未成熟樹突狀細胞的分化作用。並且無論是未成熟或是受到脂多醣、TNF-?或polyIC刺激的成熟樹突狀細胞,MP都能夠減少IL-8、TNF-?、IL-6,但顯著增加IL-10的分泌。在混合淋巴球反應試驗中,MP會降低未成熟和成熟樹突狀細胞刺激異體T細胞增殖的能力。藉由西方墨點法的方式看到MP會增加未成熟樹突狀細胞訊息傳遞與轉錄因子 (STAT3) 的磷酸化;並且給予STAT3抑制劑(JSI-124)能促使樹突細胞的活化,而增加CD86、CD83的表現;而給予酪胺酸激脢抑制劑 (AG490) 則無法達到活化的效果。根據我們實驗結果推論MP抑制樹突狀細胞的分化及功能可能藉由促進STAT3磷酸化所達到的效果。
URI
https://203.71.86.71/handle/123456789/12314
https://hdl.handle.net/11296/f9gv32
File(s)
No Thumbnail Available
Name

C0178910.pdf

Size

7.9 MB

Format

Adobe PDF

Checksum

(MD5):28bf0bcfbe2793438e075cbd28f5a544

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