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The lncRNA MIR4435-2HG promotes lung cancer progression by activating β-catenin signalling

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Abstract

Recently, emerging evidence has suggested that long noncoding RNAs (lncRNAs) have crucial roles in cancer progression. Here, we demonstrated that the lncRNA MIR4435-2HG was highly expressed in lung cancer tissues and correlated with histological grades and lymph node metastasis. Phenotypic analysis indicated that MIR4435-2HG knockdown inhibited lung cancer cell proliferation and invasion in vitro and in vivo. Notably, MIR4435-2HG knockdown suppressed the EMT (epithelial-mesenchymal transition) process and cancer stem cell traits of lung cancer cells. Mechanistically, MIR4435-2HG knockdown decreased the transactivation of β-catenin. MIR4435-2HG interacted with β-catenin and thus prevented its degradation by the proteasome system. Our findings highlight the important roles and mechanisms of MIR4435-2HG in lung cancer progression. High expression of lncRNA MIR4435-2HG correlates with lung cancer progression MIR4435-2HG promotes lung cancer cells proliferation and invasion MIR4435-2HG knockdown suppresses the EMT process and cancer stem cell traits MIR4435-2HG knockdown inhibits the β-catenin signalling.

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Authors’ contributions statement

HQ, LC, XW, SM, LLuo and LLing performed the research; JH and FC statistically analysed the experimental data; KL and GZ designed the study and wrote the paper.

Funding

This study was supported by grants from the National Natural Science Foundation of China (81672616 and 81402196) the Guangdong Natural Science Funds for Distinguished Young Scholars, China (2016A030306003), the Science and Technology Program of Guangzhou, China (201710010100), the Guangzhou Municipal University Scientific Research Project (1201610027) and supported by Guangzhou key medical discipline construction project fund.

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Author notes

  1. Haiyun Qian and Li Chen contributed equally to this work.

Authors and Affiliations

  1. Department of Cardiothoracic Surgery, Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, Renming Road 1#, Jingzhou, 434020, Hubei, China

    Haiyun Qian, Jiangping Huang, Xianghui Wang, Shengwei Ma & Fenghe Cui

  2. Department of Endocrinology, Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, Renming Road 1#, Jingzhou, 434020, Hubei, China

    Li Chen

  3. Guangzhou Key Laboratory of “Translational Medicine on Malignant Tumor Treatment”, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Hengzhigang Road 78#, Guangzhou, 510095, Guangdong, China

    Liyun Luo, Li Ling, Kai Luo & Guopei Zheng

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  1. Haiyun Qian
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  2. Li Chen
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Correspondence to Kai Luo or Guopei Zheng.

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Qian, H., Chen, L., Huang, J. et al. The lncRNA MIR4435-2HG promotes lung cancer progression by activating β-catenin signalling. J Mol Med 96, 753–764 (2018). https://doi.org/10.1007/s00109-018-1654-5

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  • DOI: https://doi.org/10.1007/s00109-018-1654-5

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