Abstract:
:Proper regulation of endothelial cell-cell contacts is essential for physiological functioning of the endothelium. Interendothelial junctions are actively involved in the control of vascular leakage, leukocyte diapedesis, and the initiation and progression of angiogenesis. We found that the RNA-binding protein quaking is highly expressed by endothelial cells, and that its expression was augmented by prolonged culture under laminar flow and the transcription factor KLF2 binding to the promoter. Moreover, we demonstrated that quaking directly binds to the mRNA of VE-cadherin and β-catenin and can induce mRNA translation mediated by the 3'UTR of these genes. Reduced quaking levels attenuated VE-cadherin and β-catenin expression and endothelial barrier function in vitro and resulted in increased bradykinin-induced vascular leakage in vivo. Taken together, we report that quaking is essential in maintaining endothelial barrier function. Our results provide novel insight into the importance of post-transcriptional regulation in controlling vascular integrity.
journal_name
Sci Repjournal_title
Scientific reportsauthors
de Bruin RG,van der Veer EP,Prins J,Lee DH,Dane MJ,Zhang H,Roeten MK,Bijkerk R,de Boer HC,Rabelink TJ,van Zonneveld AJ,van Gils JMdoi
10.1038/srep21643subject
Has Abstractpub_date
2016-02-24 00:00:00pages
21643issn
2045-2322pii
srep21643journal_volume
6pub_type
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