The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.
MiR-21 is induced in endothelial cells by shear stress and modulates apoptosis and eNOS activity
Open accessAbstract
Mechanical forces associated with blood flow play an important role in regulating vascular signaling and gene expression in endothelial cells (ECs). MicroRNAs (miRNAs) are a class of noncoding RNAs that posttranscriptionally regulate the expression of genes involved in diverse cell functions, including differentiation, growth, proliferation, and apoptosis. miRNAs are known to have an important role in modulating EC biology, but their expression and functions in cells subjected to shear stress conditions are unknown. We sought to determine the miRNA expression profile in human ECs subjected to unidirectional shear stress and define the role of miR-21 in shear stress-induced changes in EC function. TLDA array and qRT-PCR analysis performed on HUVECs exposed to prolonged unidirectional shear stress (USS, 24 hrs, 15 dynes/cm2) identified 13 miRNAs whose expression was significantly upregulated (p < 0.05). The miRNA with the greatest change was miR-21; it was increased 5.2-fold (p = 0.002) in USStreated versus control cells. Western analysis demonstrated that PTEN, a known target of miR-21, was downregulated in HUVECs exposed to USS or transfected with pre-miR-21. Importantly, HUVECs overexpressing miR-21 had decreased apoptosis and increased eNOS phosphorylation and nitric oxide (NO) production. These data demonstrate that shear stress forces regulate the expression of miRNAs in ECs, and that miR-21 influences endothelial biology by decreasing apoptosis and activating the NO pathway. These studies advance our understanding of the mechanisms by which shear stress forces modulate vascular homeostasis.
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Metadata
- Authors
- Weber, M., Baker, M. B., Moore, J. P., & Searles, C. D.
- Venue
- Biochemical and Biophysical Research Communications
- Publisher
- Elsevier BV
- Published
- 2010-03
- Volume
- 393
- Issue
- 4
- Pages
- 643-648
- ISSN
- 0006-291X (ISSN-L)
- OpenAlex
- W2094626102
- Cited by
- 381
- References
- 18
- FWCI
- 9.03
- Type
- journal article
- Language
- en
- Open access
- green
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