Cell:美科学家发现感受血压的蛋白质有望用来治疗中风

2018-04-23 周舟 新华社

美国科学家发现一种可“感受”血压并“告知”小动脉何时扩张的蛋白质,有望通过激活这种蛋白质来治疗缺血性中风。

美国科学家发现一种可“感受”血压并“告知”小动脉何时扩张的蛋白质,有望通过激活这种蛋白质来治疗缺血性中风。

发表在最新一期美国《细胞》杂志上的研究表明,“G蛋白偶联受体68”(GPCR68)是一种机械刺激感受器,对血管系统发挥“血流量介导扩张”功能至关重要。“血流量介导扩张”功能受损是高血压和动脉粥样硬化等各种心血管疾病的前兆。

“G蛋白偶联受体”是一类膜蛋白受体的统称,对这一受体的研究曾获2012年诺贝尔化学奖。

研究人员设计出可模拟血流运动的液体湍流仪,仪器使用了384个活塞,通过挤压液体,给置于384个槽内的细胞施压,然后敲除各槽中细胞的候选基因进行筛选,最后发现“G蛋白偶联受体68”具有压力感受功能。

研究人员说,小动脉无法正常扩张时,如出现高血压或因动脉粥样硬化导致的血管狭窄,降低血压的能力就会削弱,继而可能引发缺血性中风。

美国斯克里普斯研究所教授阿代姆·帕塔博蒂安说,研究人员下一步计划研究如何使用小分子药物调控这种蛋白质的功能,将其用于临床治疗。

原始出处:

Jie Xu, Jayanti Mathur, Emilie Vessières, et.al. GPR68 Senses Flow and Is Essential for Vascular Physiology. Cell Volume 173, Issue 3, p762–775.e16, 19 April 2018

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    2019-02-24 维他命
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    2018-04-24 kafei

    学习学习谢谢分享

    0

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    2018-04-23 虈亣靌

    不错.学习了.做笔记了.谢谢分享!

    0

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