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• W2891854880 abstract "Background/Aims: LncRNA is a growth arrest-specific transcript 5 (GAS5) with tumor suppressor activities in some cancers, but its role in atherosclerosis is unclear. Methods: Bioinformatics algorithm analysis was utilized to search the target of GAS5 and miR-21, followed by luciferase assay to confirm these targets. Real-time PCR and western-blot were utilized to verify the connection among GAS5, miR-21 and Programmed cell death 4 (PDCD4). MTT assay and flow cytometry analysis were performed to explore the mechanism of GAS5 in the regulation of atherosclerosis. Results: GAS5 directly targets miR-21 and functions as a competing endogenous RNA to suppress miR-21 expression. We also observed that rs145204276 polymorphism, including INS/INS and DEL/DEL, on GAS5 promoter increased transcription activity of GAS5, but the presence of rs145204276 DEL/DEL allele significantly promoted the transcription of GAS5 promoter compared with rs145204276 INS/INS allele. PDCD4 was predicted as a direct target gene of miR-21 with a binding site on PDCD4 3’UTR. It was further confirmed by luciferase assay that miR-21 significantly reduced the luciferase activity of wild-type PDCD4 3’UTR but not that of mutant PDCD4 3’UTR. In addition, high glucose significantly inhibited the growth rate of EC genotyped as DEL/DEL or INS/ INS, and apparently promoted the apoptotic rate of either DEL/DEL or INS/INS genotype ECs. Furthermore, the effect of high glucose was stronger in the INS/INS group, while the expression of GAS5 was dramatically upregulated with the presence of GAS5 DEL/DEL, while GAS5 positively regulated PDCD4 expression via inhibiting miR-21 expression. GAS5 siRNA and miR-21 mimics significantly decreased GAS5 and PDCD4 expressions, and the inhibitory effects of GAS5 siRNA or miR-21 mimics on GAS5 and PDCD4 expressions in the INS/INS group was stronger. Moreover, GAS5 siRNA and miR-21 mimics remarkably triggered cells proliferation and suppressed cell apoptosis, and the inhibition effects of GAS5 siRNA or miR-21 mimics on either cell viability and apoptosis in the INS/INS group was stronger. In this study, we enrolled 1,306 subjects with or without atherosclerosis and found that the INS/DEL or DEL/DEL genotypes significantly decreased the risk of atherosclerosis compared with the ins/ins genotype (adjusted odds ratio: 0.74 and 0.40, respectively). Conclusion: In summary, rs145204276 was associated with the risk of atherosclerosis by affecting the proliferation and apoptosis of endothelial cells via regulating the GAS5/miR-21/PDCD4 signaling pathway." @default.
• W2891854880 created "2018-09-27" @default.
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• W2891854880 date "2018-01-01" @default.
• W2891854880 modified "2023-10-18" @default.
• W2891854880 title "Association Between the Deletion Allele of Ins/Del Polymorphism (Rs145204276) in the Promoter Region of GAS5 with the Risk of Atherosclerosis" @default.
• W2891854880 doi "https://doi.org/10.1159/000493447" @default.
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