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  5. 探討HNMT在神經膠質瘤生長中所扮演的角色
 
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探討HNMT在神經膠質瘤生長中所扮演的角色

Other Title
Study of histamine-N-methyltransferase (HNMT) in the glioma
Type
thesis
Date Issued
2008-06-12
Author(s)
朱嬿陵
Advisor
何元順
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:何元順
共同指導教授:林家瑋
口試委員:潘敏雄;李宣佑;王朝鐘
中文關鍵字:神經膠質瘤;組織胺甲基轉移酵素
Abstract
神經膠質瘤源於神經膠細胞,其數量占大腦細胞的百分之九十,功能為分泌神經成長因子誘發神經纖維生長、形成髓鞘及血腦屏障。最常見的神經膠質瘤為神經膠母細胞瘤,神經膠質瘤形成的因素至今尚未完全明朗。由於神經膠質瘤生長邊界不明確,以手術方式無法清除乾淨,對於化學治療及放射線治療具有高度的抵抗性而不易治療。另一方面,因為神經膠質瘤的高度入侵性及致死率,使得科學家們致力於去開發及尋找新的治療方法及治療標的基因。之前研究發現同時給予interlukin-2 (IL-2)及組織胺治療能有效地抑制惡性神經膠質瘤的生長及血管新生,這也暗示著組織胺有抑制神經膠質瘤生長的功能。組織胺在細胞內主要藉由histamine-N-methyltransferase (HNMT)來代謝。前人的實驗結果已經證實組織胺含量及其代謝物和癌症有著一定的相關性,然而卻沒有相關的文獻直接指出HNMT和神經膠質瘤的關係或探討HNMT相關的致病機轉,本論文發現不論是神經膠質瘤組織或細胞株,HNMT的表現量都較正常腦組織多,高度表現的HNMT暗示著抗癌的組織胺含量下降。另一方面,神經膠質瘤促進因子之一的epithelial growth factor (EGF)會增加HNMT的表現及HNMT在細胞中位置的轉移。針對致命的神經膠質瘤,我們的結果提供HNMT是另一個新的治療標的。
URI
https://203.71.86.71/handle/123456789/12932
https://hdl.handle.net/11296/3j9d9u
File(s)
No Thumbnail Available
Name

C0191297.pdf

Size

18.44 MB

Format

Adobe PDF

Checksum

(MD5):d14d52232720726a789c474914a4ea59

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