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- W858397524 abstract "Long non-coding RNAs (IncRNAs) play important roles in various biological processes, such as transcriptional regulation, cell growth and tumorigenesis. However, little is known about the role of IncRNA HIF 1 alpha-antisense RNA 1 (HIF1a-AS1) in regulating the proliferation and apoptosis of vascular smooth muscle cells (VSMCs) and the expression of HIF1a-AS1 in serum of thoracoabdominal aortic aneurysm (TAAA) patients. The cell viability was detected by the CCK8 assay. The cell apoptosis was assessed by annexin V-PI double-labeling staining. Expression of genes and proteins were analyzed by real-time PCR and western blotting, respectively. Cells were transfected with siRNAs as a gene silencing method. In serum of TAAA patients, the expression of HIF1a-AS1 was significantly increased (superior to 6-fold) compared to the normal control. Moreover, Palmitic acid (PA) induced cell apoptosis in VSMCs in a time- and dose-dependent manner, and the proportion of the apoptotic cells had gained as compared to untreatment group. PA also induced up-regulation expression of HIF1a-AS1. We also found that transfection of cells with HIF1a-AS1 siRNA decreased the expression of caspase-3 and caspase-8 and increased the expression of Bcl2, and protected PA-induced cell apoptosis in VSMCs. HIF1a-AS1 was overexpressed in the TAAA and the interaction between HIF1a-AS1 and apoptotic proteins plays a key role in the proliferation and apoptosis of VSMCs in vitro, which may contribute to the pathogenesis of TAAA." @default.
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- W858397524 date "2015-05-01" @default.
- W858397524 modified "2023-10-12" @default.
- W858397524 title "Long noncoding RNA HIF1A-AS1A reduces apoptosis of vascular smooth muscle cells: implications for the pathogenesis of thoracoabdominal aorta aneurysm." @default.
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