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Article

Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells

  • Authors:
    • Ling Guo
    • Zhong‑Xiu Guo
    • Hui‑Ping Gong
    • Yuan‑Yuan Shang
    • Ming Zhong
    • Yun Zhang
    • Wei Zhang
  • View Affiliations / Copyright

    Affiliations: Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Department of Cardiology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China, Department of Cardiology, The Central Hospital of Taian, Taian, Shandong 271000, P.R. China, Department of Cardiology, The Second Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
  • Pages: 1963-1970
    |
    Published online on: March 31, 2015
       https://doi.org/10.3892/mmr.2015.3576
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Abstract

Tribbles homolog 3 (TRIB3) is an intracellular kinase-like molecule that modifies cellular survival and metabolism. The present study aimed to investigate the function of TRIB3 regulation in the process of high glucose‑induced apoptosis in endothelial cells, with the aim of identifying a novel intervention target for the prevention and treatment of diabetes mellitus. Human umbilical vein endothelial cells (HUVECs) grown in medium with various concentrations of glucose (5.5, 10, 20, 30 and 40 mmol/l) were assessed for mRNA expression of TRIB1, TRIB2 and TRIB3 using reverse transcription quantitative polymerase chain reaction. In addition, protein expression of TRIB3 was examined using western blot analysis. Immunofluorescence staining was performed in order to determine the distribution and localization of TRIB3 in HUVECs. Furthermore, cells grown in normal (5.5 mmol/l) or high glucose (HG; 30 mmol/l) medium were subjected to TRIB3 inhibition through small interfering (si)RNA knockdown. These cells were then examined in order to determine whether TRIB3 upregulation was associated with endothelial cell apoptosis. HUVECs treated with 30 and 40 mmol/l glucose for 48 h and 72 h showed significantly lower survival rates compared with those treated with normal glucose levels. In addition, slight but not significant increases in TRIB1 and TRIB2 mRNA expression were observed in HUVECs incubated with various concentrations of glucose for different durations. By contrast, TRIB3 mRNA expression was increased 7.2‑fold following incubation with HG. Western blot analysis revealed a 5.44‑fold increase in TRIB3 protein levels in cells grown in HG medium for 24 h compared with those grown in normal medium. Immunostaining assays revealed a markedly higher and well‑defined nucleolar fluorescence intensity for TRIB3 expression at 24 h in HG medium compared with that of the control group. Furthermore, the apoptotic rate of HG‑treated TRIB3 siRNA‑transfected HUVECs was significantly increased compared with that of those transfected with control siRNA In conclusion, the results of the present study suggested that TRIB3 was associated with high glucose‑induced HUVECs apoptosis, which was attenuated following transfection with TRIB3 siRNA.
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Copy and paste a formatted citation
Spandidos Publications style
Guo L, Guo ZX, Gong HP, Shang YY, Zhong M, Zhang Y and Zhang W: Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells. Mol Med Rep 12: 1963-1970, 2015.
APA
Guo, L., Guo, Z., Gong, H., Shang, Y., Zhong, M., Zhang, Y., & Zhang, W. (2015). Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells. Molecular Medicine Reports, 12, 1963-1970. https://doi.org/10.3892/mmr.2015.3576
MLA
Guo, L., Guo, Z., Gong, H., Shang, Y., Zhong, M., Zhang, Y., Zhang, W."Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells". Molecular Medicine Reports 12.2 (2015): 1963-1970.
Chicago
Guo, L., Guo, Z., Gong, H., Shang, Y., Zhong, M., Zhang, Y., Zhang, W."Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells". Molecular Medicine Reports 12, no. 2 (2015): 1963-1970. https://doi.org/10.3892/mmr.2015.3576
Copy and paste a formatted citation
x
Spandidos Publications style
Guo L, Guo ZX, Gong HP, Shang YY, Zhong M, Zhang Y and Zhang W: Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells. Mol Med Rep 12: 1963-1970, 2015.
APA
Guo, L., Guo, Z., Gong, H., Shang, Y., Zhong, M., Zhang, Y., & Zhang, W. (2015). Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells. Molecular Medicine Reports, 12, 1963-1970. https://doi.org/10.3892/mmr.2015.3576
MLA
Guo, L., Guo, Z., Gong, H., Shang, Y., Zhong, M., Zhang, Y., Zhang, W."Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells". Molecular Medicine Reports 12.2 (2015): 1963-1970.
Chicago
Guo, L., Guo, Z., Gong, H., Shang, Y., Zhong, M., Zhang, Y., Zhang, W."Tribbles homolog 3 is induced by high glucose and associated with apoptosis in human endothelial cells". Molecular Medicine Reports 12, no. 2 (2015): 1963-1970. https://doi.org/10.3892/mmr.2015.3576
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