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首页> 外文期刊>Journal of Cellular Physiology >Pim-3 is expressed in endothelial cells and promotes vascular tube formation.
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Pim-3 is expressed in endothelial cells and promotes vascular tube formation.

机译:在内皮细胞和Pim-3表示促进血管形成。

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摘要

Pim-3 is a member of proto-oncogene Pim family that encodes serine/threonine kinases. Pim proteins regulate both apoptosis and cellular metabolism by phosphorylating their substrates. Here, we report for the first time that Pim-3 is highly expressed at mRNA and protein levels in endothelial cells (ECs). We found that Pim-3 is concentrated at the cellular lamellipodia and co-localized with focal adhesion kinase (FAK). Pim-3 was dispersed from lamellipodia when ECs were treated with cytochalasin D, an inhibitor of actin polymerization. In addition, small-interfering RNA (siRNA)-mediated gene knockdown of Pim-3 significantly impaired EC spreading, migration, and proliferation, leading to a reduction in tube-like structure formation in a Matrigel assay. These results provide the novel evidence that Pim-3 plays an essential role in EC spreading and migration, suggesting that Pim-3 may be an important molecular target for the development of small-molecule inhibitors of angiogenesis.
机译:Pim-3 Pim原癌基因家族中的一员编码丝氨酸/苏氨酸激酶。蛋白调节细胞凋亡和细胞新陈代谢通过磷酸化的底物。在这里,我们报告Pim-3是首次高度在mRNA和蛋白表达水平内皮细胞(ECs)。集中在细胞板状伪足和硝唑与粘着斑激酶(FAK)。当ECs Pim-3分散于板状伪足治疗与细胞松弛素D,抑制剂的肌动蛋白聚合。核携带RNA介导的基因可拆卸的EC Pim-3大大受损扩散、迁移和增殖,导致减少在管状结构的形成基底膜基质试验。证据表明Pim-3小说中扮演着重要的角色在EC扩散和迁移,说明Pim-3可能是一个重要的目标分子小分子抑制剂的发展血管生成。

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