MicroRNA-34c suppresses proliferation of vascular smooth muscle cell via modulating high mobility group box protein 1.

Journal of Clinical Laboratory Analysis
Li-Bo ChenWen-Qi Zhang

Abstract

Atherosclerosis is the most frequent pathological process that causes cardiovascular diseases. The present study aimed to confirm miRNAs associated with atherosclerosis and explore the molecular mechanism of miR-34c and its target high mobility group box protein 1 (HMGB1) in the control of growth of smooth muscle cells in the development of atherosclerosis. Real-time PCR was firstly performed to confirm miRNA correlation with atherosclerosis, and computational analysis and luciferase assay were performed to explore the target of miR-34c, Western blot, and real-time PCR were also utilized to reveal the effect of whether high glucose (HG) and miR-34c affect miR-34c, HMGB1 levels, NF-κB p65 and TNF-α levels, and the role of miR-34c on vascular smooth muscle cells (VSMCs) viability induced by HG. Students' unpaired t test was performed to compare data between two groups. MiR-34c level was associated with atherosclerosis with different expression between VSMCs treated with high glucose or normal VSMCs. Then, HMGB1 is a virtual target of miR-34c with predicted binding site resided in HMGB1 3'UTR and further verified by that miR-34c remarkably reduced luciferase activity of wild HMGB1 3'UTR under a concentration-dependent fashion, and...Continue Reading

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Methods Mentioned

BETA
transfection
PCR
protein assay

Software Mentioned

Target
GraphPad
ABI 7500
Scan
Prism

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