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  5. 探討小孢子靈芝免疫調節蛋白GMI誘導結腸直腸癌細胞死亡機制
 
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探討小孢子靈芝免疫調節蛋白GMI誘導結腸直腸癌細胞死亡機制

Other Title
The assessment of GMI-induced anti-tumor effect in human colorectal cancer
Type
thesis
Date Issued
2016-06-29
Author(s)
林政宇
Advisor
張榮善
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:張榮善
共同指導教授:
口試委員:陳瑞祥;陳建中
中文關鍵字:結腸直腸癌;小孢子靈芝免疫調節蛋白;細胞凋亡
英文關鍵字:Colorectal cancer;GMI;Apoptosis
Abstract
在罹患結腸直腸癌病人中除了手術切除外,在化療、標靶治療及放射性化療通常令患者放棄療程。然而,這些類型的治療通常帶來相當大的副作用,導致患者生理和心理上的痛苦,甚至惡化病人的健康狀況。本項研究的目的是探討從小孢子靈芝所分離出來的真菌免疫調節蛋白(Ganoderma microsporum immunomodulatory protein , GMI)對HCT-15結腸直腸癌細胞的毒殺作用以及其導致細胞凋亡的可能機制。初步實驗結果發現隨著GMI濃度的增加,HCT-15細胞的細胞形態明顯改變,也發現GMI會增加HCT-15細胞活性氧物質(ROS)的產生,同時表現出活化的Caspase 3、Caspase 7、PARP,最後導致細胞凋亡。此外,GMI與5-FU的聯合治療的細胞實驗中揭示GMI具有拮抗作用,有效殺死HTC-15癌細胞。同時使用GMI可以降低5-FU的劑量需求以毒殺HTC-15癌細胞。我們利用MTAMs的小鼠模式與斑馬魚模式進行體內實驗,發現GMI也會誘導HCT-15細胞死亡,然而此濃度下的GMI並不會損傷小鼠器官或組織之病變。除了老鼠動物模式外,GMI 對斑馬魚胚胎發育的影響,亦被評估。結果顯示,GMI 濃度高於0.5M對斑馬魚胚胎發育是有影響的。總結,GMI有可能是具治療大腸癌的重組免疫蛋白藥物之一。
URI
https://203.71.86.71/handle/123456789/57564

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