Nat Commun:PARP1通过上调Runx2促进血管钙化

2020-02-27 不详 网络

血管钙化在终末期肾脏疾病中非常普遍,可预测心血管事件和死亡率。聚(ADP-核糖)聚合酶1(PARP1)抑制或删除在几种疾病模型中具有血管保护作用。本研究中,我们发现,在患有慢性肾功能衰竭的患者的radial动脉样本中,在尿毒症大鼠的动脉中以及体外钙化的血管平滑肌细胞(VSMC)中,PARP活性会增加。PARP1缺乏会阻断VSMC从收缩型向成骨型的转分化,矿化调节蛋白的表达以及钙沉积,而PARP1的

血管钙化在终末期肾脏疾病中非常普遍,可预测心血管事件和死亡率。聚(ADP-核糖)聚合酶1(PARP1)抑制或删除在几种疾病模型中具有血管保护作用。

本研究中,我们发现,在患有慢性肾功能衰竭的患者的radial动脉样本中,在尿毒症大鼠的动脉中以及体外钙化的血管平滑肌细胞(VSMC)中,PARP活性会增加。PARP1缺乏会阻断VSMC从收缩型向成骨型的转分化,矿化调节蛋白的表达以及钙沉积,而PARP1的过表达则会加剧。PARP1促进Runx2表达,而Runx2缺乏则抵消了PARP1的促钙化作用。活化的PARP1通过IL-6/STAT3通路抑制miRNA-204的表达,从而减轻其靶标Runx2的抑制,导致Runx2蛋白增加。

总之,这些结果表明,PARP1抵消了血管钙化,影响PARP1活性的治疗剂可能有益于治疗血管钙化。

原始出处:

Cheng Wang, Wenjing Xu, et al., Poly(ADP-ribose) polymerase 1 accelerates vascular calcification by upregulating Runx2. Nat Commun. 2019; 10: 1203. doi: 10.1038/s41467-019-09174-1

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    2020-06-02 liuli5079
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    2020-08-31 liye789132251
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    2020-07-22 stfoxst
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    2020-02-29 zhaojie88