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艾塞那肽对HepG2细胞糖异生的影响及机制探讨 被引量:1

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摘要 目的研究艾塞那肽(Exenatide)对Hep G2细胞糖异生关键酶葡萄糖-6-磷酸酶(G6Pase)的影响,并探讨其作用机制。方法将对数生长期Hep G2细胞随机分9组,胰岛素组、胰升糖素肽-1(GLP-1)组、艾塞那肽组、GLP-1+胰岛素组、艾塞那肽+胰岛素组、LY294002(一种磷脂酰肌醇-3-激酶阻断剂)组、GLP-1+LY294002组、艾塞那肽+LY294002组和对照组,每组10个样本。采用免疫印迹法(Western bloting)检测各组G6Pase蛋白表达水平。结果与对照组(0.191±0.056)比较,胰岛素组(0.070±0.015)、GLP-1组(0.068±0.013)、艾塞那肽组(0.067±0.008)、GLP-1+胰岛素组(0.031±0.003)、艾塞那肽+胰岛素组(0.030±0.002)G6Pase表达量均减少,差异均有统计学意义(t值分别为3.34、3.40、3.29、3.57和4.01,P<0.05);与胰岛素组比较,GLP-1+胰岛素组、艾塞那肽+胰岛素组G6Pase表达量均减少,差异均有统计学意义(t值分别为2.45、2.52,P<0.05)。与GLP-1组比,GLP-1+LY294002组G6Pase的蛋白表达量(0.120±0.032)增加,差异有统计学意义(t=2.12,P<0.05);与艾塞那肽组比,艾塞那肽+LY294002组G6Pase的蛋白表达量(0.127±0.022)增加,差异有统计学意义(t=2.23,P<0.05)。结论艾塞那肽能抑制Hep G2细胞G6Pase的合成。艾塞那肽抑制Hep G2细胞糖异生的作用可能部分通过激活磷脂酰肌醇-3-激酶通路完成。
出处 《中国慢性病预防与控制》 CAS 2015年第7期519-520,共2页 Chinese Journal of Prevention and Control of Chronic Diseases
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