lncRNA PRR34-AS1 promotes HCC development via modulating Wnt/β-catenin pathway by absorbing miR-296-5p and upregulating E2F2 and SOX12.

lncRNA PRR34-AS1 promotes HCC development via modulating Wnt/β-catenin pathway by absorbing miR-296-5p and upregulating E2F2 and SOX12.
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DOI:
10.1016/j.omtn.2021.04.016
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发表时间:
2021-09-03
期刊:
Molecular therapy. Nucleic acids
影响因子:
--
通讯作者:
Yi T
Yi T
中科院分区:
其他
文献类型:
--
作者:
Qin M;Meng Y;Luo C;He S;Qin F;Yin Y;Huang J;Zhao H;Hu J;Deng Z;Qiu Y;Hu G;Pan H;Qin Z;Huang Z;Yi T

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肝细胞癌(HCC)是世界范围内最常见、死亡率较高的癌症。数千种长非编码 RNA (lncRNA) 已被证实影响人类癌症(包括 HCC)的发展。然而,PRR34 反义 RNA 1 (PRR34-AS1) 在 HCC 中的生物学作用仍不清楚。在这里,我们通过定量实时逆转录酶聚合酶链反应(定量实时RT-PCR)观察到PRR34-AS1在HCC细胞中高表达。功能分析显示,PRR34-AS1 在体外促进 HCC 细胞增殖、迁移、侵袭和上皮间质转化 (EMT) 过程,并促进体内肿瘤生长。此外,蛋白质印迹分析和 TOP Flash/FOP Flash 报告基因检测证实 PRR34-AS1 刺激 HCC 细胞中的 Wnt/β-catenin 通路。此外,RNA 免疫沉淀 (RIP)、RNA Pull-down 和荧光素酶报告基因检测发现,PRR34-AS1 隔离 microRNA-296-5p (miR-296-5p),从而正向调节 HCC 细胞中的 E2F 转录因子 2 (E2F2) 和 SRY-box 转录因子 12 (SOX12)。重要的是,染色质免疫沉淀 (ChIP) 和荧光素酶报告基因检测发现 E2F2 依次转录激活 PRR34-AS1。此外,救援实验表明 PRR34-AS1 通过靶向 miR-296-5p/E2F2/SOX12/Wnt/β-catenin 轴影响 HCC 进展。我们的研究结果发现PRR34-AS1在HCC中引发致癌功能,这表明PRR34-AS1可能是HCC的新治疗靶点。 Huang及其同事揭示了长非编码RNA PRR34-AS1隔离miR-296-5p以升高E2F2和SOX12,从而激活Wnt/β-连环蛋白通路并促进肝细胞癌的发展。这些发现支持 PRR34-AS1 作为肝细胞癌治疗的可能新靶点。
Hepatocellular carcinoma (HCC) belongs to the most frequent cancer with a high death rate worldwide. Thousands of long non-coding RNAs (lncRNAs) have been confirmed to influence the development of human cancers, including HCC. Nevertheless, the biological role of PRR34 antisense RNA 1 (PRR34-AS1) in HCC remains obscure. Here, we observed via quantitative real-time reverse transcriptase polymerase chain reaction (quantitative real-time RT-PCR) that PRR34-AS1 was highly expressed in HCC cells. Functional assays revealed that PRR34-AS1 promoted HCC cell proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT) process in vitro and facilitated tumor growth in vivo. In addition, western blot analysis and TOP Flash/FOP Flash reporter assays verified that PRR34-AS1 stimulated Wnt/β-catenin pathway in HCC cells. Furthermore, RNA immunoprecipitation (RIP), RNA pull-down, and luciferase reporter assays uncovered that PRR34-AS1 sequestered microRNA-296-5p (miR-296-5p) to positively modulate E2F transcription factor 2 (E2F2) and SRY-box transcription factor 12 (SOX12) in HCC cells. Importantly, chromatin immunoprecipitation (ChIP) and luciferase reporter assays uncovered that E2F2 transcriptionally activated PRR34-AS1 in turn. Further, rescue experiments reflected that PRR34-AS1 affected HCC progression through targeting miR-296-5p/E2F2/SOX12/Wnt/β-catenin axis. Our findings found that PRR34-AS1 elicited oncogenic functions in HCC, which indicated that PRR34-AS1 might be a novel therapeutic target for HCC. Huang and colleagues unmasked that long non-coding RNA PRR34-AS1 sequesters miR-296-5p to elevate E2F2 and SOX12, therefore activating Wnt/β-catenin pathway and facilitating hepatocellular carcinoma development. The findings supported PRR34-AS1 as a possible novel target for hepatocellular carcinoma treatment.
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