MicroRNA-9 limits hepatic fibrosis by suppressing the activation and proliferation of hepatic stellate cells by directly targeting MRP1/ABCC1

Retraction in: /10.3892/or.2023.8590

  • Authors:
    • Jie Sun
    • Huanying Zhang
    • Liying Li
    • Lianfeng Yu
    • Lifang Fu
  • View Affiliations

  • Published online on: January 17, 2017     https://doi.org/10.3892/or.2017.5382
  • Pages: 1698-1706
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Abstract

Liver fibrosis is a chronic liver disease characterized by the proliferation and activation of hepatic stellate cells (HSCs) and excessive deposition of extracellular matrix (ECM). Research suggests that microRNAs (miRNAs) are a new type of regulator of liver fibrosis. In the present study, we investigated the role of microRNA-9 (miR-9) in the process of liver fibrosis, as well as the underlying mechanism of action. Downregulated levels of miR-9 were found in fibrotic liver tissues and activated HSCs as detected by qRT-PCR; whereas, expression of multidrug resistance‑associated protein 1 (MRP1/ABCC1) was upregulated in the fibrotic liver tissues and activated HSCs. CCK-8 and BrdU assays revealed that miR-9 reduced the proliferative ability of the HSCs. In addition, expression levels of ECM-related genes (α-SMA, Col-1 and Timp-1), which are markers of HSC activation, were downregulated by miR-9. Conversely, an miR-9 inhibitor promoted cell proliferation and HSC activation. In addition, a luciferase reporter assay indicated that miR-9 targets the 3'-untranslated region (3'-UTR) of MRP1 and causes a significant decrease in MRP1. miR-9 inhibited the activation of the Hedgehog (Hh) pathway and the expression of MRP1, while this suppression was rescued by the overexpression of MRP1. Finally, a CCl4-induced mouse model of liver fibrosis was used to investigate the effects of miR-9 on liver fibrosis in vivo. The results showed that miR-9 abrogated hepatic fibrosis by suppressing the expression of MRP1 in CCl4-induced liver fibrotic mice. In conclusion, the present study demonstrated that miR-9 suppresses the proliferation and activation of HSCs through the Hh pathway by targeting MRP1, which suggests that miR-9 has therapeutic potential for liver fibrosis.
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March-2017
Volume 37 Issue 3

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Sun J, Zhang H, Li L, Yu L and Fu L: MicroRNA-9 limits hepatic fibrosis by suppressing the activation and proliferation of hepatic stellate cells by directly targeting MRP1/ABCC1 Retraction in /10.3892/or.2023.8590. Oncol Rep 37: 1698-1706, 2017
APA
Sun, J., Zhang, H., Li, L., Yu, L., & Fu, L. (2017). MicroRNA-9 limits hepatic fibrosis by suppressing the activation and proliferation of hepatic stellate cells by directly targeting MRP1/ABCC1 Retraction in /10.3892/or.2023.8590. Oncology Reports, 37, 1698-1706. https://doi.org/10.3892/or.2017.5382
MLA
Sun, J., Zhang, H., Li, L., Yu, L., Fu, L."MicroRNA-9 limits hepatic fibrosis by suppressing the activation and proliferation of hepatic stellate cells by directly targeting MRP1/ABCC1 Retraction in /10.3892/or.2023.8590". Oncology Reports 37.3 (2017): 1698-1706.
Chicago
Sun, J., Zhang, H., Li, L., Yu, L., Fu, L."MicroRNA-9 limits hepatic fibrosis by suppressing the activation and proliferation of hepatic stellate cells by directly targeting MRP1/ABCC1 Retraction in /10.3892/or.2023.8590". Oncology Reports 37, no. 3 (2017): 1698-1706. https://doi.org/10.3892/or.2017.5382