Department of Urological Surgery, China Three Gorges University Affiliated Yichang City First People's Hospital, Yichang, Hubei 443000, P.R. China.
Mol Med Rep. 2018 Dec;18(6):5791-5798. doi: 10.3892/mmr.2018.9608. Epub 2018 Oct 29.
Long noncoding RNA taurine upregulated gene 1 (lncRNA TUG1) and microRNA‑196a (miR‑196a) have been reported to serve important roles in the development of renal cell carcinoma (RCC). However, their potential mechanisms have not been completely elucidated. The aim of the present study was to clarify the biological functions of lncRNA‑TUG1 and miR‑196a, in addition to investigating the interaction between lncRNA‑TUG1 and microRNA‑196a, providing a novel insight into RCC tumorigenesis. The present study comprised two parts. In the first part, lncRNA‑TUG1 was confirmed as an oncogene, via reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) analysis, MTT assay, flow cytometry analysis, and migration and invasion assays. In the second part, the association between lncRNA‑TUG1 and miR‑196a, and the molecular mechanism, was illustrated via RT‑qPCR analysis, MTT assay, dual luciferase reporter assay and western blotting. The results of the present study demonstrated that lncRNA‑TUG1 was able to promote RCC cell proliferation, migration and invasion in vitro by suppressing miR‑196a. Additionally, lncRNA‑TUG1 achieved its biological functions by regulating the expression levels of RAC‑α serine/threonine‑protein kinase, mitogen‑activated protein kinase and extracellular signal‑regulated kinase via inhibition of miR‑196a. In conclusion, the present findings proposed a novel potential therapeutic target, the lncRNA‑TUG1‑miR‑196a axis, which may be applicable to the treatment of RCC.
长链非编码 RNA 牛磺酸上调基因 1(lncRNA TUG1)和 microRNA-196a(miR-196a)已被报道在肾细胞癌(RCC)的发展中发挥重要作用。然而,它们的潜在机制尚未完全阐明。本研究旨在阐明 lncRNA-TUG1 和 miR-196a 的生物学功能,并研究 lncRNA-TUG1 和 microRNA-196a 之间的相互作用,为 RCC 肿瘤发生提供新的见解。本研究包括两部分。在第一部分中,通过逆转录-定量聚合酶链反应(RT-qPCR)分析、MTT 分析、流式细胞术分析以及迁移和侵袭实验,证实 lncRNA-TUG1 是一种癌基因。在第二部分中,通过 RT-qPCR 分析、MTT 分析、双荧光素酶报告基因实验和 Western blot 分析说明了 lncRNA-TUG1 与 miR-196a 之间的关联及其分子机制。本研究结果表明,lncRNA-TUG1 通过抑制 miR-196a 能够促进 RCC 细胞在体外的增殖、迁移和侵袭。此外,lncRNA-TUG1 通过抑制 miR-196a 调节 RAC-α丝氨酸/苏氨酸-蛋白激酶、丝裂原活化蛋白激酶和细胞外信号调节激酶的表达水平来发挥其生物学功能。综上所述,本研究结果提出了一种新的潜在治疗靶点,即 lncRNA-TUG1-miR-196a 轴,可能适用于 RCC 的治疗。