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International Journal of Molecular Medicine
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Article

MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3

  • Authors:
    • Yuan Li
    • Tianyou Luo
    • Liang Wang
    • Jing Wu
    • Shixin Guo
  • View Affiliations / Copyright

    Affiliations: Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 410000, P.R. China
  • Pages: 1515-1524
    |
    Published online on: September 23, 2016
       https://doi.org/10.3892/ijmm.2016.2748
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Abstract

MicroRNAs (miRNAs or miRs), a group of small non-coding RNAs, have been demonstrated to play key roles in various physicological processes and diseases, including diabetes, the most common metabolic disorder. However, the underlying mechanisms remains largely unknown. In this study, we aimed to investigate the role of miR‑19a‑3p in diabetes. The results of RT-qPCR demonstrated that the level of miR‑19a‑3p was significantly decreased in the diabetic patients, and that the decreased miR‑50a-5p level was significantly associated with a high concentration of blood glucose. miR‑19a‑3p mimic was further used to transfect pancreatic β cells, and we found that the overexpression of miR-19a-3p promoted cell proliferation and insulin secretion, while it suppressed the apoptosis of pancreatic β cells. Suppressor of cytokine signaling 3 (SOCS3) was further identified as a direct target gene of miR‑19a‑3p, and its protein level was significantly decreased following the overexpression of miR‑19a‑3p. Moreover, the siRNA-induced downregulation of SOCS3 also enhanced cell proliferation and insulin secretion, while it inhibited the apoptosis of pancreatic β cells. In addition, the overexpression of SOCS3 reversed the effects of miR‑19a‑3p overexpression on cell proliferation, insulin secretion and on the apoptosis of pancreatic β cells, which further indicates that SOCS3 acts as a downstream effector in the miR-19a-3p-mediated function of pancreatic β cells. Finally, the level of SOCS3 was increased in diabetic patients, and inversely correlated with the miR‑19a‑3p level, suggesting that the downregulation of miR-19a-3p leads to the upregulation of SOCS3, which contributes to the dysfunction of pancreatic β cells. On the whole, the findings of this study suggest that miR‑19a‑3p plays an important role in β cell function, and that the miR-19a-3p/SOCS3 axis may become a potential therapeutic target for diabetes.
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Copy and paste a formatted citation
Spandidos Publications style
Li Y, Luo T, Wang L, Wu J and Guo S: MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3. Int J Mol Med 38: 1515-1524, 2016.
APA
Li, Y., Luo, T., Wang, L., Wu, J., & Guo, S. (2016). MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3. International Journal of Molecular Medicine, 38, 1515-1524. https://doi.org/10.3892/ijmm.2016.2748
MLA
Li, Y., Luo, T., Wang, L., Wu, J., Guo, S."MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3". International Journal of Molecular Medicine 38.5 (2016): 1515-1524.
Chicago
Li, Y., Luo, T., Wang, L., Wu, J., Guo, S."MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3". International Journal of Molecular Medicine 38, no. 5 (2016): 1515-1524. https://doi.org/10.3892/ijmm.2016.2748
Copy and paste a formatted citation
x
Spandidos Publications style
Li Y, Luo T, Wang L, Wu J and Guo S: MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3. Int J Mol Med 38: 1515-1524, 2016.
APA
Li, Y., Luo, T., Wang, L., Wu, J., & Guo, S. (2016). MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3. International Journal of Molecular Medicine, 38, 1515-1524. https://doi.org/10.3892/ijmm.2016.2748
MLA
Li, Y., Luo, T., Wang, L., Wu, J., Guo, S."MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3". International Journal of Molecular Medicine 38.5 (2016): 1515-1524.
Chicago
Li, Y., Luo, T., Wang, L., Wu, J., Guo, S."MicroRNA-19a-3p enhances the proliferation and insulin secretion, while it inhibits the apoptosis of pancreatic β cells via the inhibition of SOCS3". International Journal of Molecular Medicine 38, no. 5 (2016): 1515-1524. https://doi.org/10.3892/ijmm.2016.2748
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