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  5. α-galactosylceramide衍生物嵌合微脂粒對樹突狀細胞的成熟影響與點鼻給予之免疫效應
 
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α-galactosylceramide衍生物嵌合微脂粒對樹突狀細胞的成熟影響與點鼻給予之免疫效應

Other Title
Study on liposomes incorporating α-galactosylceramide analogs in the induction of dendritic cells maturation and intranasal immunological effect
Type
thesis
Date Issued
2011-07-02
Author(s)
江珮慈
Advisor
劉得任
Subjects
系所名稱:生醫材料暨工程研究所
Description
學位別:碩士
語文別:中文
指導教授:劉得任
共同指導教授:
口試委員:黃義侑;侯文琪
中文關鍵字:微脂粒;黏膜免疫;alpha-Galcer
Abstract
黏膜免疫系統在抵禦外來病原體提供極重要的功能;在執行防禦功能時,樹突狀細胞在抗原呈現上扮演重要的角色。α-Galactosylceramide (α-GalCer)是由海綿分離出來的天然物,已知其可透過抗原呈現細胞(antigen-presenting-cells, APCs)上的CD1d分子媒介,活化Natural Killer T (NKT)細胞,並產生大量Th1和Th2細胞激素(cytokines) ,進而活化各種先天性(innate)及後天性(adaptive)免疫細胞產生免疫力。
本實驗利用α-GalCer類似物與PC (phosphatidylcholine)製成之中性電荷微脂粒,在細胞實驗觀察樹突狀細胞發育過程中,給予嵌合有α-GalCer類似物的微脂粒及傳統無嵌合式微脂粒, 觀察其對樹突狀細胞表面分子CD80及CD86表現量變化影響,結果顯示微脂粒組別均有增加的趨勢;為了瞭解嵌合式微脂粒經點鼻給予的免疫效應,本實驗以六週齡BALB/c母鼠,經鼻黏膜免疫二次接種後,收集血清、鼻沖洗及肺沖洗液,以酵素連結免疫分析法(ELISA)測量其IgA、IgG及subtype IgG生成量來了解嵌合式微脂粒與傳統微脂粒在免疫形成的影響,結果顯示。經嵌合有α-GalCer及其類似物之微脂粒二次點鼻免疫能誘使更高的黏膜分泌型免疫球蛋白sIgA及血清免疫球蛋白IgG生成。
由細胞實驗結果證實,微脂粒良好的載體特性確實能誘使樹突狀細胞成熟;而嵌合有α-GalCer各組別之微脂粒在二次點鼻免疫後兩週,能比傳統微脂粒於呼吸道黏膜誘導產生更大量的保護性抗體IgA及增加血液中具全身保護性抗體IgG的產生。
URI
https://203.71.86.71/handle/123456789/13444

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