Nat Commun:血管疾病基础研究新进展

2017-03-17 MedSci MedSci原创

日前,来自美国科罗拉多大学的学者发表基础研究文章《核PTEN是SRF依赖性调控平滑肌分化的必需因子》于Nature子刊Nature Communications,深入探讨平滑肌细胞表型转化的新机制。

血管疾病进展与血管平滑肌细胞的表型转化及功能改变密切相关。血管平滑肌细胞表达收缩基因及由此导致分化,都是受转录因子血清反应因子(serum response factor, SRF)的直接调控。然而,平滑肌细胞表型的动态调节机制目前还不清楚。

来自美国科罗拉多大学的学者发表基础研究文章《核PTEN是SRF依赖性调控平滑肌分化的必需因子》于Nature子刊Nature Communications,深入探讨平滑肌细胞表型转化的新机制。

本研究作者发现脂质及蛋白磷酸酶PTEN在细胞核中的新功能:即作为不可或缺的调节因子参与SRF维持平滑肌细胞分化表型。 PTEN可以与SRF的N端结构域相互作用,并且PTEN-SRF相互作用促进SRF结合在平滑肌细胞分化基因的必需启动子元件上。诱导表型转化的因素可以通过细胞核-细胞质穿梭易位促进核PTEN减少,导致肌原活性的SRF减少,而靶标在增殖基因上的活性SRF增多。总之,作者观察到在人类动脉粥样硬化病变部分的内膜平滑肌细胞中PTEN的表达降低,提示此发现具有潜在的临床意义。

原始出处:Horita H, Wysoczynski CL,et al.Nuclear PTEN functions as an essential regulator of SRF-dependent transcription to control smooth muscle differentiation.Nat Commun. 2016 Mar 4;7:10830.

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    2017-05-19 liuli5079
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    2017-05-10 liye789132251
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    2017-03-17 喜婷

    学习了

    0

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    2017-03-17 医之美

    为动脉硬化治疗增加了新的靶点

    0

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    2017-03-17 榄枷檬

    血管疾病进展与血管平滑肌细胞的表型转化及功能改变密切相关。

    0

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