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Article

miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes

  • Authors:
    • Shuyue Wang
    • Linfang Li
    • Xiehui Chen
    • Xiuqing Huang
    • Jin Liu
    • Xuelin Sun
    • Yang Zhang
    • Tao Shen
    • Jun Guo
    • Yong Man
    • Weiqing Tang
    • Lin Dou
    • Jian Li
  • View Affiliations / Copyright

    Affiliations: The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing 100730, P.R. China, Department of Geriatrics Cardiovascular Medicine, Shenzhen Sun Yat‑Sen Cardiovascular Hospital, Shenzhen, Guangdong 518112, P.R. China, College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
  • Pages: 4129-4137
    |
    Published online on: August 17, 2018
       https://doi.org/10.3892/mmr.2018.9400
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Abstract

Hyperglycaemia is a characteristic of type 2 diabetes. In hepatocytes, impaired insulin sensitivity leads to increased gluconeogenesis and decreased glycogenesis. MicroRNA (miR)‑338‑3p is associated with tumour necrosis factor (TNF)‑α‑induced suppression of hepatic glycogenesis via regulation of protein phosphatase 4 regulatory subunit 1 (PP4R1). However, the effect of miR‑338‑3p on gluconeogenesis in hepatocytes remains unknown. In a previous study, it was demonstrated that miR‑338‑3p is downregulated in the livers of mice and in mouse HEPA1‑6 hepatocytes following treatment with TNF‑α. In the present study, the effect of miR‑338‑3p on TNF‑α‑induced gluconeogenesis in hepatocytes was investigated. The levels of phosphorylated‑FOXO1/FOXO1, phosphoenolpyruvate carboxykinase (PEPCK), peroxisome proliferator‑activated receptor γ coactivator (PGC‑1α) and glucose‑6‑phosphatase (G6Pase) were measured by western blotting. The mRNA levels of PEPCK, PGC‑1α and G6Pase were determined by quantitative polymerase chain reaction. Pyruvate tolerance testing was used to determine the gluconeogenesis of mouse livers. The results demonstrated that treatment with TNF‑α resulted in increased levels of gluconeogenesis in the livers of mice and decreased miR‑338‑3p expression levels in HEPA1‑6 cells. Overexpression of miR‑338‑3p reversed TNF‑α‑induced glucose production via enhancement of phosphorylated forkhead box O1 levels and downregulation of the expression levels of genes associated with gluconeogenesis, including peroxisome proliferator‑activated receptor γ coactivator‑1α, phosphoenolpyruvate carboxykinase and glucose‑6‑phosphatase. However, inhibition of miR‑338‑3p expression was revealed to enhance gluconeogenesis in the livers of mice and in HEPA1‑6 cells. Furthermore, downregulation of PP4R1 was revealed to attenuate the effect on glucose production following treatment with miR‑338‑3p inhibitors. In conclusion, the results of the present study revealed that miR‑338‑3p may be involved in TNF‑α‑mediated gluconeogenesis via targeting of PP4R1 in hepatocytes.
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Copy and paste a formatted citation
Spandidos Publications style
Wang S, Li L, Chen X, Huang X, Liu J, Sun X, Zhang Y, Shen T, Guo J, Man Y, Man Y, et al: miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes . Mol Med Rep 18: 4129-4137, 2018.
APA
Wang, S., Li, L., Chen, X., Huang, X., Liu, J., Sun, X. ... Li, J. (2018). miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes . Molecular Medicine Reports, 18, 4129-4137. https://doi.org/10.3892/mmr.2018.9400
MLA
Wang, S., Li, L., Chen, X., Huang, X., Liu, J., Sun, X., Zhang, Y., Shen, T., Guo, J., Man, Y., Tang, W., Dou, L., Li, J."miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes ". Molecular Medicine Reports 18.4 (2018): 4129-4137.
Chicago
Wang, S., Li, L., Chen, X., Huang, X., Liu, J., Sun, X., Zhang, Y., Shen, T., Guo, J., Man, Y., Tang, W., Dou, L., Li, J."miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes ". Molecular Medicine Reports 18, no. 4 (2018): 4129-4137. https://doi.org/10.3892/mmr.2018.9400
Copy and paste a formatted citation
x
Spandidos Publications style
Wang S, Li L, Chen X, Huang X, Liu J, Sun X, Zhang Y, Shen T, Guo J, Man Y, Man Y, et al: miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes . Mol Med Rep 18: 4129-4137, 2018.
APA
Wang, S., Li, L., Chen, X., Huang, X., Liu, J., Sun, X. ... Li, J. (2018). miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes . Molecular Medicine Reports, 18, 4129-4137. https://doi.org/10.3892/mmr.2018.9400
MLA
Wang, S., Li, L., Chen, X., Huang, X., Liu, J., Sun, X., Zhang, Y., Shen, T., Guo, J., Man, Y., Tang, W., Dou, L., Li, J."miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes ". Molecular Medicine Reports 18.4 (2018): 4129-4137.
Chicago
Wang, S., Li, L., Chen, X., Huang, X., Liu, J., Sun, X., Zhang, Y., Shen, T., Guo, J., Man, Y., Tang, W., Dou, L., Li, J."miR‑338‑3p mediates gluconeogenesis via targeting of PP4R1 in hepatocytes ". Molecular Medicine Reports 18, no. 4 (2018): 4129-4137. https://doi.org/10.3892/mmr.2018.9400
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