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LncRNA APOA1-AS facilitates proliferation and migration and represses apoptosis of VSMCs through TAF15-mediated SMAD3 mRNA stabilization
Cell Cycle ( IF 4.3 ) Pub Date : 2021-08-12 , DOI: 10.1080/15384101.2021.1951940
Jixiang Wang 1 , Ying Cai 2 , Hui Lu 3 , Fugeng Zhang 3 , Junyi Zheng 1
Affiliation  

ABSTRACT

Coronary atherosclerosis (CAS) is a major cause of cardiovascular disease. Long non-coding RNAs (lncRNAs) have been implicated as novel biomarkers in coronary artery disease (CAD). APOA1 antisense RNA (APOA1-AS) was proven to show high expression during atherosclerotic development, but no report has uncovered the detailed mechanism of APOA1-AS in CAS. Thus, this paper aims to explore the role of APOA1-AS in CAS. Vascular smooth muscle cells (VSMCs) were treated with oxidized low-density lipoprotein (ox-LDL) to mimic atherosclerosis-like injury. Quantitative real-time PCR (RT-qPCR) and western blot analysis analyzed gene expression. Cell counting kit-8 (CCK-8), wound healing assay, and flow cytometry were implemented to assess the function of APOA1-AS in modulating pathological phenotype of VSMCs. Results demonstrated that APOA1-AS was notably up-regulated in ox-LDL treated VSMCs (ox-LDL-VSMCs). The deficiency of APOA1-AS hindered proliferation and migration and stimulated apoptosis in ox-LDL-VSMCs. Mechanistically, APOA1-AS recruited TATA-box binding protein associated factor 15 (TAF15) protein to stabilized SMAD family member 3 (SMAD3) mRNA and activate the TGF-β/SMAD3 signaling pathway. In conclusion, APOA1-AS contributed to proliferation and migration and repressed apoptosis of VSMCs through TAF15-mediated SMAD3 mRNA stabilization, indicating that APOA1-AS could be a promising target for CAS.



中文翻译:

LncRNA APOA1-AS 通过 TAF15 介导的 SMAD3 mRNA 稳定促进 VSMC 的增殖和迁移并抑制凋亡

摘要

冠状动脉粥样硬化(CAS)是心血管疾病的主要原因。长链非编码 RNA (lncRNA) 已被认为是冠状动脉疾病 (CAD) 中的新型生物标志物。APOA1 反义 RNA (APOA1-AS) 被证明在动脉粥样硬化发展过程中表现出高表达,但没有报道揭示 APOA1-AS 在 CAS 中的详细机制。因此,本文旨在探讨 APOA1-AS 在 CAS 中的作用。用氧化的低密度脂蛋白 (ox-LDL) 处理血管平滑肌细胞 (VSMC) 以模拟动脉粥样硬化样损伤。定量实时 PCR (RT-qPCR) 和蛋白质印迹分析分析了基因表达。采用细胞计数试剂盒 8 (CCK-8)、伤口愈合试验和流式细胞术评估 APOA1-AS 在调节 VSMC 病理表型中的功能。结果表明 APOA1-AS 在 ox-LDL 处理的 VSMC (ox-LDL-VSMC) 中显着上调。APOA1-AS 的缺乏阻碍了ox-LDL-VSMCs 的增殖和迁移并刺激了细胞凋亡。从机制上讲,APOA1-AS 募集 TATA-box 结合蛋白相关因子 15 (TAF15) 蛋白以稳定 SMAD 家族成员 3 (SMAD3) mRNA 并激活 TGF-β/SMAD3 信号通路。总之,APOA1-AS 通过 TAF15 介导的 SMAD3 mRNA 稳定化促进 VSMC 的增殖和迁移并抑制凋亡,表明 APOA1-AS 可能是 CAS 的一个有希望的靶点。APOA1-AS 募集 TATA-box 结合蛋白相关因子 15 (TAF15) 蛋白以稳定 SMAD 家族成员 3 (SMAD3) mRNA 并激活 TGF-β/SMAD3 信号通路。总之,APOA1-AS 通过 TAF15 介导的 SMAD3 mRNA 稳定化促进 VSMC 的增殖和迁移并抑制凋亡,表明 APOA1-AS 可能是 CAS 的一个有希望的靶点。APOA1-AS 募集 TATA-box 结合蛋白相关因子 15 (TAF15) 蛋白以稳定 SMAD 家族成员 3 (SMAD3) mRNA 并激活 TGF-β/SMAD3 信号通路。总之,APOA1-AS 通过 TAF15 介导的 SMAD3 mRNA 稳定化促进 VSMC 的增殖和迁移并抑制凋亡,表明 APOA1-AS 可能是 CAS 的一个有希望的靶点。

更新日期:2021-09-28
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