...
首页> 外文期刊>Molecular and Cellular Endocrinology >Malondialdehyde regulates glucose-stimulated insulin secretion in murine islets via TCF7L2-dependent Wnt signaling pathway
【24h】

Malondialdehyde regulates glucose-stimulated insulin secretion in murine islets via TCF7L2-dependent Wnt signaling pathway

机译:丙二醛通过依赖TCF7L2的Wnt信号通路调节小鼠胰岛中葡萄糖刺激的胰岛素分泌

获取原文
获取原文并翻译 | 示例
           

摘要

Evidence showed strong relations between malondialdehyde (MDA) levels and different pathological stages of diabetes. Here, an explicit system with freshly isolated islets and precisely controlled MDA gradient was employed to investigate the physiological effect of MDA on GSIS. Promoter analysis, pathway mapping, Q-PCR profiling, and siRNA verification were performed to clarify the intracellular signaling pathways. MDA at a moderately high level (5 and 10μM) promoted GSIS and accompanied with ATP/ADP ratio, cytosolic Ca2+ level, and key regulators (GK, GLUT2, PDX1, and UCP2) changes in islets. Both upstream (PI3K and p-AKT) and downstream (TCF7L2 and TCF7) factors of Wnt pathway showed greatest changes. Knockdown of TCF7L2 blocked the MDA-induced GSIS elevation. These results indicated that MDA acted as a signaling messenger and regulated islet GSIS mainly through Wnt pathway. Therefore, the elevated MDA level and up-regulated Wnt signaling pathway could be an etiological factor in the development of hyperinsulinemia and type 2 diabetes.
机译:证据表明丙二醛(MDA)水平与糖尿病的不同病理阶段之间存在密切关系。在这里,一个具有新鲜分离的胰岛和精确控制的MDA梯度的显式系统被用来研究MDA对GSIS的生理作用。进行了启动子分析,途径作图,Q-PCR分析和siRNA验证,以阐明细胞内信号传导途径。中等水平的MDA(5和10μM)促进GSIS,并伴随着胰岛中的ATP / ADP比,胞质Ca2 +水平和关键调节因子(GK,GLUT2,PDX1和UCP2)的变化。 Wnt途径的上游(PI3K和p-AKT)和下游(TCF7L2和TCF7)因子均显示最大变化。降低TCF7L2阻止了MDA诱导的GSIS升高。这些结果表明,MDA主要通过Wnt途径作为信号信使和调节的胰岛GSIS。因此,MDA水平升高和Wnt信号通路上调可能是高胰岛素血症和2型糖尿病发生的病因。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号