Interleukin-1β enhances cell adhesion in human endothelial cells via microRNA-1914–5p suppression
2021
Toshie Kihara | Kohki Toriuchi | Hiromasa Aoki | Hiroki Kakita | Yasumasa Yamada | Mineyoshi Aoyama
Atherosclerosis is a chronic inflammatory disease and the underlying cause of most cardiovascular diseases. Interleukin (IL)-1β facilitates early atherogenic lesion formation by increasing monocyte adhesion to endothelial cells via upregulation of adhesion molecules, including intercellular adhesion molecule-1 (ICAM-1). MicroRNAs (miRNAs) have been shown to be associated with inflammatory conditions in the vascular system. The expression of circulating miR-1914–5p is reportedly downregulated in patients with cardiovascular diseases. However, the role of miR-1914–5p downregulation in IL-1β–induced endothelial cell dysfunction and the effect of miR-1914–5p on lesion formation remain unclear. Therefore, we investigated whether miR-1914–5p is associated with monocyte adhesion in human endothelial cells. IL-1β decreased miR-1914–5p expression in EA.hy926 cells. In addition, miR-1914–5p depletion enhanced ICAM-1 expression and monocyte adhesion in EA.hy926 cells. Moreover, miR-1914–5p mimic suppressed monocyte adhesion and ICAM-1 expression induced by IL-1β in endothelial cells. These results suggest that suppression of miR-1914–5p expression by IL-1β may be an important regulator in mediating monocyte adhesion in endothelial cells. Further investigation of miR-1914–5p may lead to the development of novel therapeutic strategies for atherosclerosis.
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