A Role for Polo-Like Kinase 4 in Vascular Fibroblast Cell-Type Transition.

A Role for Polo-Like Kinase 4 in Vascular Fibroblast Cell-Type Transition.
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DOI:
10.1016/j.jacbts.2020.12.015
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发表时间:
2021-03
期刊:
JACC. Basic to translational science
影响因子:
--
通讯作者:
Guo LW
Guo LW
中科院分区:
其他
文献类型:
--
作者:
Li J;Urabe G;Huang Y;Zhang M;Wang B;Marcho L;Shen H;Kent KC;Guo LW

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PLK4以前被称为中心粒相关因子,调节血清应答因子的转录因子活性。PLK4抑制阻断血管成纤维细胞的促纤维化细胞状态转变。PLK4的激活和基因表达分别由PDGF受体和表观遗传阅读器BRD4调节。PLK4抑制剂的外膜周施用减轻血管纤维化。Polo样激酶4(PLK4)因其在中心粒复制中的细胞质功能而被公认。在这里,我们显示了一个非经典PLK4的功能,调节转录因子SRF的核活性和相关的肌成纤维细胞样细胞类型的转变。在此背景下,我们进一步发现PLK4的磷酸化和转录分别受到PDGF受体和表观遗传因子BRD4的调节。此外,体内实验表明PLK4抑制是减轻血管纤维化的潜在方法。
PLK4, previously known as a centriole-associated factor, regulates the transcription factor activity of serum response factor. PLK4 inhibition blocks the profibrogenic cell state transition of vascular fibroblasts. PLK4’s activation and gene expression are regulated by PDGF receptor and epigenetic reader BRD4, respectively. Periadventitial administration of a PLK4 inhibitor mitigates vascular fibrosis. Polo-like kinase 4 (PLK4) is canonically known for its cytoplasmic function in centriole duplication. Here we show a noncanonical PLK4 function of regulating the transcription factor SRF’s nuclear activity and associated myofibroblast-like cell-type transition. In this context, we have further found that PLK4’s phosphorylation and transcription are respectively regulated by PDGF receptor and epigenetic factor BRD4. Furthermore, in vivo experiments suggest PLK4 inhibition as a potential approach to mitigating vascular fibrosis.
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