Upregulated microRNA-199a-5p inhibits nuclear receptor corepressor 1 translation in mice with non‑alcoholic steatohepatitis

  • Authors:
    • Binggui Zhang
    • Rongqi Wang
    • Jinghua Du
    • Jingya Niu
    • Rui Zhang
    • Shunjiang Xu
    • Xuemin Niu
    • Qingfu Zhang
    • Yuemin Nan
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  • Published online on: September 23, 2014     https://doi.org/10.3892/mmr.2014.2592
  • Pages: 3080-3086
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Abstract

Mounting evidence indicates that dysregulated microRNAs (miRNAs) are important in the etiology and pathogenesis of steatohepatitis. However, the functions of miRNAs in the pathophysiological process of non-alcoholic steatohepatitis (NASH) are poorly understood. In this study, C57BL/6J mice were fed a methionine-choline‑deficient (MCD) diet for eight weeks in order to induce hepatic steatohepatitis. Using reverse transcription polymerase chain reaction, the hepatic expression levels of miR-199a-5p, miR-122 and miR-221 in the mice were examined. Bioinformatic analysis of dysregulated miR-199a-5p was performed to predict the potential role of miR‑199a‑5p in NASH. The MCD diet was found to significantly reduce miR-122 expression levels and significantly increase miR‑199a-5p expression levels in mouse livers, compared with those of mice fed a control diet. In the bioinformatic analysis, miR‑199a‑5p was identified to be predominantly involved in transcription, protein serine/threonine kinase activity, insulin signaling, and the Wnt and mitogen‑activated protein kinase signaling pathways. The regulation of nuclear receptor corepressor 1 (NCOR1) by miR‑199a-5p was also examined by silencing and overexpressing this miRNA in LX-2 cells. The data revealed that NCOR1 protein levels were significantly reduced and enhanced by miR-199a-5p mimic and inhibitor, respectively. These findings suggest a key role for miR-199a-5p in the progression of NASH through inhibition of NCOR1 translation, and provide novel insights into NASH pathogenesis.
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December-2014
Volume 10 Issue 6

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Zhang B, Wang R, Du J, Niu J, Zhang R, Xu S, Niu X, Zhang Q and Nan Y: Upregulated microRNA-199a-5p inhibits nuclear receptor corepressor 1 translation in mice with non‑alcoholic steatohepatitis. Mol Med Rep 10: 3080-3086, 2014.
APA
Zhang, B., Wang, R., Du, J., Niu, J., Zhang, R., Xu, S. ... Nan, Y. (2014). Upregulated microRNA-199a-5p inhibits nuclear receptor corepressor 1 translation in mice with non‑alcoholic steatohepatitis. Molecular Medicine Reports, 10, 3080-3086. https://doi.org/10.3892/mmr.2014.2592
MLA
Zhang, B., Wang, R., Du, J., Niu, J., Zhang, R., Xu, S., Niu, X., Zhang, Q., Nan, Y."Upregulated microRNA-199a-5p inhibits nuclear receptor corepressor 1 translation in mice with non‑alcoholic steatohepatitis". Molecular Medicine Reports 10.6 (2014): 3080-3086.
Chicago
Zhang, B., Wang, R., Du, J., Niu, J., Zhang, R., Xu, S., Niu, X., Zhang, Q., Nan, Y."Upregulated microRNA-199a-5p inhibits nuclear receptor corepressor 1 translation in mice with non‑alcoholic steatohepatitis". Molecular Medicine Reports 10, no. 6 (2014): 3080-3086. https://doi.org/10.3892/mmr.2014.2592