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  5. Indole-3-carbinol及α-naphthoflavone於3T3-L1成熟脂肪細胞脂質堆積及其相關血管新生作用之影響
 
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Indole-3-carbinol及α-naphthoflavone於3T3-L1成熟脂肪細胞脂質堆積及其相關血管新生作用之影響

Other Title
Effects of indole-3-carbinol and α-naphthoflavone on lipid accumulation and its associated angiogenesis in 3T3-L1 mature adipocytes
Type
thesis
Date Issued
2015-07-11
Author(s)
王美琳
Advisor
陳玉華
Subjects
系所名稱:保健營養學研究所
Description
學位別:博士
語文別:中文
指導教授:陳玉華
共同指導教授:
口試委員:許瑞芬;蔡帛蓉;馮琮涵;謝榮鴻
中文關鍵字:芳香烴受體;成熟脂肪細胞;血管新生
英文關鍵字:arylhydrocarbon receptor;mature adipocytes;angiogenesis
Abstract
本研究探討aryl hydrocarbon receptor (AhR) 之antagonist α-naphthoflavone (α-NF)及AhR agonist indole-3-carbinol (I3C)於成熟脂肪細胞及其相關血管新生作用影響,由於成熟脂肪細胞大多存在肥胖者體內,故使用成熟脂肪細胞作為實驗模式。將3T3-L1前脂肪細胞誘發分化後,再投與α-NF及I3C,觀察對於成熟脂肪脂質堆積及成熟脂肪細胞誘發類血管生成所扮演之角色。結果顯示α-NF可促進成熟脂肪細胞之脂質堆積與成熟脂肪細胞condition medium (CM) 誘導之類血管生成作用,伴隨成熟脂肪細胞中AhR、ARNT、CYP1B1及Nrf-2蛋白質表現降低及促進HSL、ER蛋白質表現,且成熟脂肪細胞之CM中VEGF與 IL-6生成增加,與NO、IGF-1、MMP-2及MMP-9表現下降。而I3C則為抑制脂肪細胞之脂質堆積與類血管生成作用,伴隨促進AhR、ARNT及CYP1B1蛋白質表現與降低及GPDH、HSL與Nrf-2蛋白質表現,且CM中甘油、IGF-1、VEGF、IL-6與NO生成量降低,且MMP-2及MMP-9活性表現受抑制。此外以siRNA將AhR knockdown,可促進脂肪細胞脂質堆積、VEGF及NO生成,並降低甘油釋出與IL-6釋出。本研究發現AhR antagonist α-NF促進成熟脂肪細胞之脂質堆積與類血管生成,AhR agonist I3C則抑制此作用而與α-NF呈現相反結果,且抑制AhR可增加脂肪細胞分化之脂質生成與相關血管新生因子釋出。因此AhR可抑制脂肪細胞分化及已分化脂肪細胞之脂質堆積與其誘發之類血管生成作用,顯示AhR具有預防或治療肥胖相關疾病之作用。
URI
https://203.71.86.71/handle/123456789/57080

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