CircNMD3 relieves endothelial cell injury induced by oxidatively modified low-density lipoprotein through regulating miR-498/ BMP and activin membrane-bound inhibitor (BAMBI) axis

Bioengineered

卷:13

Jian Xiu¹  Yixing Zhou¹  Yanbo Sui¹  Zheng Yang²  Lin Zhang³ 

[1] Department of Cardiology, First People’s Hospital of Zhaoqing;

[2] Department of Vascular Surgery, Baoding Second Hospital;

[3] Department of cardiology, First Affiliated Hospital of Daqing Heilongjiang, China;

关键词: Atherosclerosis;    vascular endothelial cell injury;    circNMD3;    hsa-miR-498;    BAMBI;   

DOI  :  10.1080/21655979.2022.2065813

来源: DOAJ

【 摘 要 】

Atherosclerosis (AS) is one of the most common vascular diseases. The endothelial injury theory indicates that atherosclerotic plaque is the result of endothelial cell injury. Recent studies have revealed that circRNAs are abnormally expressed in AS cell models, which are implicated in the regulation of various cell behaviors. In this study, we showed the downregulation of circNMD3 in AS, and studied its role in the model of endothelial cell injury by proliferation and apoptosis assay, caspase 3 activity assay, and ELISA. We also identified and validated its downstream targets by luciferase reporter assay, RNA pull-down experiment, Western blot, and RT-qPCR. CircNMD3 overexpression or miR-498 knockdown could inhibit the ox-LDL (oxidatively modified low-density lipoprotein)-induced injury in HUVEC (human umbilical vein endothelial cells), while the co-transfection of miR-498 mimic or siRNA targeting BAMBI (BMP and activin membrane bound inhibitor) attenuated the protective effect of circNMD3 overexpression. Overall, our data suggest that circNMD3 regulates the miR-498/BAMBI axis in endothelial cells to protect ox-LDL-induced damages. As a molecular sponge of miR-498, circNMD3 regulates the level of miR-498, which in turn modulates BAMBI expression and suppresses ox-LDL-induced injury in HUVECs.

【 授权许可】

Unknown