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首页> 外文期刊>Gynecological endocrinology: the official journal of the International Society of Gynecological Endocrinology >The antidiabetic drug metformin inhibits uterine leiomyoma cell proliferation via an AMP-activated protein kinase signaling pathway
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The antidiabetic drug metformin inhibits uterine leiomyoma cell proliferation via an AMP-activated protein kinase signaling pathway

机译:抗糖尿病药物二甲双胍通过AMP激活的蛋白激酶信号通路抑制子宫平滑肌瘤细胞增殖

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摘要

Uterine leiomyomas are the most common gynecological benign tumors and greatly affect reproductive health and wellbeing. Metformin is the most widely used antidiabetic drug in the world, and there is increasing evidence of a potential efficacy of this agent as an anticancer drug. In order to understand metformin's anti-tumorigenic potential better, in this study, we investigated the inhibitory effect of metformin and expression of key targets of metformin cell signaling in leiomyoma cells. Cell proliferation was assessed after exposure to metformin. Apoptosis was assessed by western blotting for cleaved-PARP and TUNEL staining. The expressions of phosphorylated AMPK and phosphorylated S6 were determined by western blotting. Metformin potently inhibited ELT-3 cell proliferation in a dose-dependent manner. Western blotting analysis demonstrated that metformin induced phosphorylation of AMPK and the inhibitory effect was attenuated with AMPK inhibitor, compound C. In parallel, treatment with metformin decreased phosphorylation of S6 protein. These experimental findings show that metformin is a potent inhibitor of cell proliferation in leiomyoma cells. This effect is mediated by AMPK activation and subsequent inhibition of the mTOR pathway. Thus, this study provides a possible mechanism of the action of metformin in the inhibition of leiomyoma cell growth.
机译:子宫平滑肌瘤是最常见的妇科良性肿瘤,会极大地影响生殖健康。二甲双胍是世界上使用最广泛的抗糖尿病药,并且越来越多的证据表明该药作为抗癌药的潜在功效。为了更好地了解二甲双胍的抗肿瘤潜力,在本研究中,我们研究了二甲双胍的抑制作用以及二甲双胍细胞信号转导在平滑肌瘤细胞中的表达。接触二甲双胍后评估细胞增殖。通过Western印迹评估裂解的PARP和TUNEL染色的凋亡。通过蛋白质印迹法测定磷酸化的AMPK和磷酸化的S6的表达​​。二甲双胍以剂量依赖性方式有效抑制ELT-3细胞增殖。蛋白质印迹分析表明,二甲双胍可诱导AMPK磷酸化,其抑制作用被AMPK抑制剂化合物C减弱。并行地,二甲双胍治疗可降低S6蛋白的磷酸化。这些实验结果表明,二甲双胍是平滑肌瘤细胞中细胞增殖的有效抑制剂。该作用由AMPK激活和随后的mTOR途径抑制介导。因此,该研究提供了二甲双胍在抑制平滑肌瘤细胞生长中作用的可能机制。

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