NEAT1 knockdown suppresses endothelial cell proliferation and induces apoptosis by regulating miR ‑638/AKT/mTOR signaling in atherosclerosis.

NEAT1 knockdown suppresses endothelial cell proliferation and induces apoptosis by regulating miR‑638/AKT/mTOR signaling in atherosclerosis. Oncol Rep. 2020 May 07;: Authors: Zhang X, Guan MX, Jiang QH, Li S, Zhang HY, Wu ZG, Cong HL, Qi XH Abstract Long non‑coding RNAs (lncRNAs) have been validated to mediate the development of atherosclerosis (AS). In the present study, the molecular mechanisms and functions of lncRNA nuclear paraspeckle assembly transcript 1 (NEAT1) in the advancement of human aortic endothelial cells (HAECs) were investigated. The levels of lncRNA‑NEAT1 and miR‑638 expression in clinical samples and cells were explored via quantitative reverse transcription polymerase chain reaction. Colony formation and CCK‑8 assays were performed to determine the proliferative capacity of cells, and the apoptotic capacity of cells was analyzed on the basis of apoptotic cell proportion and caspase‑3 activity. Then, the proportion of cells and correlations among phosphoglycerate kinase 1 (PGK1), NEAT1, and miR‑638 were determined through RNA immunoprecipitation and luciferase assays and bioinformatics analysis. Moreover, the expression levels of Ki‑67, proliferating cell nuclear antigen, PGK1, Bax, Bcl‑2, (p)‑mTOR, (p)‑AKT, and β‑catenin were analyzed via western blot analysis. In the serum of patients with AS and HAECs induced by oxidized low‑density lipoprotein (ox‑LDL), the expression level of mi...
Source: Oncology Reports - Category: Cancer & Oncology Tags: Oncol Rep Source Type: research