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  5. 探討葡萄糖胺在人類初代滑液膜纖維母細胞抑制間質分解酵素及趨化激素的分子機制
 
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探討葡萄糖胺在人類初代滑液膜纖維母細胞抑制間質分解酵素及趨化激素的分子機制

Other Title
Study of inhibitory molecular mechanisms of glucosamine on the MMPs and chemokines expression in human primary synovial fibroblast
Type
thesis
Date Issued
2006
Author(s)
林雅婷
Advisor
陳建和
許明照
Subjects
系所名稱:醫學檢驗生物技術學研究所
Abstract
退化性關節炎,被認為是關節軟骨的正常功能喪失,而導致軟骨細胞的合成及分解功能失去平衡所引起的。而間質分解酵素能降解細胞外間質,故間質分解酵素在退化性關節炎病理中扮演重要角色。IL-1β 是一種細胞激素,存在於退化性關節炎軟骨及滑液膜中。IL-1β 是一個重要的調解者,其會參與基質降解及減少醣蛋白合成。IL-1β 會來調解代謝過程,包括了調控酵素的分泌,例如一氧化氮合成?、間質分解酵素及ADAMAs 。葡萄醣胺可能會刺激醣蛋白合成、抑制醣蛋白降解作用並且在體內刺激軟骨中的醣蛋白再生。在本篇碩士論文中,glucosamine 加入滑液膜纖維母細胞中,發現glucosamine 會調控MMP-1、MMP-3、MMP-13 和chemokines,例如IL-8, MCP-1 and RANTES 的protein以及 mRNA 表現。為了了解glucosamine 如何調節MMPs 及chemokines 的訊息傳遞路徑,因此探討一些蛋白激?磷酸化的訊號傳遞。從結果上可以看到glucosamine HCl 活化經由IL-1β 所誘導的MAKP pathway 中的JNK 及ERK 的磷酸化,除此之外,glucosamine 會抑制p-IκBα 磷酸化及IκBα 的分解,所以NF-κB 無法進入核內。從以上的結果證明glucosamine 在人類初代滑液膜纖維母細胞中,glucosamine會經由NF-κB這條路徑中抑制p-IκBα 磷酸化,而來抑制IL-1β活化啟動下游基因MMP-1、MMP-3、MMP-13以及chemokine的表現。
URI
https://203.71.86.71/handle/123456789/12422
File(s)
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Name

C0178801.pdf

Size

6.91 MB

Format

Adobe PDF

Checksum

(MD5):d415e343a8816df9a9be8c6c38c8dea1

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