Zhang W, Liu B, Wang Y, Sun PHD L, Liu C, Zhang H, Qin W, Liu J, Han L, Shan W. miR-195-3p/BDNF axis regulates hypoxic injury by targeting P-ERK1/2 expression.
Medicine (Baltimore) 2022;
101:e31586. [PMID:
36401373 PMCID:
PMC9678563 DOI:
10.1097/md.0000000000031586]
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Abstract
OBJECTIVES
Coronary heart disease (CHD) is the most common heart disease and the leading cause of cardiovascular deaths worldwide. Decreased endothelial cell (EC) proliferation, increased apoptosis, inflammation, and vascular dysfunction are considered vital factors in CHD. In this study, we aimed to determine the expression and role of microRNA-195-3p and brain-derived neurotrophic factor (BDNF) in hypoxic-treated human umbilical vein endothelial cells (HUVECs).
MEASURES
We induced hypoxia in HUVECs using the "anaerobic tank method."
RESULTS
We found that the levels of microRNA-195-3p and BDNF were upregulated and apoptosis was increased. Furthermore, we found that BDNF/P-ERK1/2 regulated the expression of the mitochondrial apoptosis pathway proteins Bcl-2/BAX, which was downregulated under hypoxic conditions. Finally, the microRNA-195-3p inhibitor downregulated BDNF and P-ERK1/2, upregulated the Bcl-2/BAX axis, and partially reversed the effects of hypoxic-induced injury in HUVECs.
CONCLUSIONS
Therapeutic intervention using the microRNA-195-3p/BDNF/P-ERK1/2/Bcl-2/BAX axis could maintain EC function under hypoxic conditions, improve cell activity, and serve as a new treatment strategy for CHDs.
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