Diabetologia:FAK酪氨酸磷酸化受AMPK调节并控制人骨骼肌的代谢

2018-04-24 MedSci MedSci原创

近日,国际杂志 《Diabetologia》上在线发表一项关于FAK酪氨酸磷酸化受AMPK调节并控制人骨骼肌的代谢的研究。 胰岛素介导的信号和AMP激活的蛋白激酶(AMPK)介导的信号分别在能量充足和不足的生理条件被激活。粘着斑激酶(FAK)涉及胰岛素信号传导和各种非肌肉细胞类型的癌症进展,并在骨骼肌分化过程中起调节作用。FAK在骨骼肌中与胰岛素刺激或AMPK活化有关的作用尚不清楚。研究人员

近日,国际杂志 《Diabetologia》上在线发表一项关于FAK酪氨酸磷酸化受AMPK调节并控制人骨骼肌的代谢的研究。 胰岛素介导的信号和AMP激活的蛋白激酶(AMPK)介导的信号分别在能量充足和不足的生理条件被激活。粘着斑激酶(FAK)涉及胰岛素信号传导和各种非肌肉细胞类型的癌症进展,并在骨骼肌分化过程中起调节作用。FAK在骨骼肌中与胰岛素刺激或AMPK活化有关的作用尚不清楚。研究人员检测了胰岛素或AMPK活化对人骨骼肌FAK磷酸化的影响以及FAK对葡萄糖和脂质代谢的直接作用。研究人员假设胰岛素治疗和AMPK激活会对FAK磷酸化产生相反的作用,并且沉默FAK基因会改变新陈代谢。研究人员用胰岛素或AMPK活化化合物5-氨基咪唑-4-甲酰胺核糖核苷酸(AICAR)处理人肌肉以确定FAK磷酸化和葡萄糖转运。使用原代人骨骼肌细胞研究胰岛素或AICAR处理对血清饥饿期间FAK信号传导的影响,以及确定FA K沉默基因PTK2的代谢结果。 研究发现,AMPK的活化降低了骨骼肌中FAK的酪氨酸磷酸化。在分离的人骨骼肌和培养的肌管中AICAR降低了p-FAK Y397。胰岛素刺激不会改变FAK磷酸

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    2018-04-24 lou.minghong

    学习了.谢谢分享!

    0

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近日,中国科学院上海药物研究所吴蓓丽课题组在抗肥胖药物靶点的结构和功能研究方面取得重要进展,首次测定了神经肽Y受体Y1R分别与两种抑制剂结合的高分辨率三维结构,揭示了该受体与多种药物分子的相互作用机制,为治疗肥胖和糖尿病等疾病的药物研发提供了重要的依据。研究成果于北京时间4月19日在国际学术期刊《自然》(Nature)上在线发表。

Diabetologia:GIP(3-30)NH2是一种有效的GIP受体拮抗剂?

近日,国际杂志 《Diabetologia》上在线发表一项关于GIP(3-30)NH2是在人类中一种有效的GIP受体拮抗剂的随机,双盲,安慰剂对照,交叉研究。 葡萄糖依赖型胰岛素多肽(GIP)是一种肠内内分泌K细胞分泌的内分泌激素,尽管具有一定的治疗效果,但关于人类GIP生理学尚不清楚。通过合适的GIP受体拮抗剂可促进该领域的进展。本研究首次对天然存在的GIP(3-30)NH2在体内和体外受