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  5. 烏靈參之生物活性成分研究
 
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烏靈參之生物活性成分研究

Other Title
Bioactive Constituents from Wu-Ling-Shen, a Termite Associated Xylaria nigripes YMJ653
Type
thesis
Date Issued
2015-07-16
Author(s)
張榮純
Advisor
林若凱
李宗徽
Subjects
系所名稱:生藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:林若凱
共同指導教授:李宗徽
口試委員:盧重光;蕭哲志;李慶國
中文關鍵字:黑柄炭角菌;倍半萜類;誘發型一氧化氮合成酶第二型環氧合酶基質金屬蛋白酵素
英文關鍵字:Xylaria nigripes;Sesquiterpene;iNOS;COX-2;MMP
Abstract
白蟻巢菌圃 (fungus comb or garden) 中包含許多種微生物,在生態演替中扮演 重要的角色,尤其是炭角菌屬 (Xylaria spp.) 的真菌,而且,該菌屬的子實體 (fruiting body) 長久以來就被使用於中國傳統醫藥作為鎮靜、催眠藥或用於增強記憶的用藥,意謂著該類真菌為活性化合物的潛在來源。因此選擇黑柄炭角菌 Xylaria nigripes YMJ653 進行發酵培養及其二次代謝物研究。
從液態發酵液純化分離出 13 個化合物,經一系列的光譜解析始確認結構,其中有9個新化合物,分別是6個eremophilane-type sesquiterpene類化合物 nigriterpene A-F (1-6);1 個 guaiane-type sesquiterpene 類化合物 (+)-epi-guaidiol A (12) 和 1 個 ambrosanolide-type sesquiterpene 類化合物 (+)-ambrosanoli-10,11-diol (13);1 個 aromatic 類化合物 2-(hydroxymethyl)-3-pentylphenol (11),還有 4 個已知化合物,分別是 2 個 benzofuran-type aromatic 類化合物 fomannoxin alcohol (7) 和 fomannoxin (8);以及其他的 3-butyl-7-hydroxyphthalide (9) 及 scytalone (10)。
在活性試驗上,以 BV-2 細胞株探討 13 個化合物純質 (1-13) 對脂多醣(LPS) 誘導發炎蛋白之影響,結果發現化合物3同時可抑制誘發型一氧化氮合成酶 (iNOS) 和第二型環氧合酶 (COX-2) 的生成,且具有顯著效果,與未誘發組相比較,其 iNOS 蛋白表現為 1.9 ± 1.1 倍,COX-2 蛋白表現為 2.4 ± 0.3 倍。另以 HTP-1 細胞株探討化合物 6 在不同濃度下,對於基質金屬蛋白酵素-9 (MMP-9) 的抑制及細胞毒殺活性,結果顯現隨化合物濃度增加使得 MMP-9 的活性漸次降低,以及細胞毒殺活性逐漸增加。
URI
https://203.71.86.71/handle/123456789/57071

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