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Article

Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells

  • Authors:
    • Ying He
    • Ning Wang
    • Yinchen Shen
    • Zhi Zheng
    • Xun Xu
  • View Affiliations / Copyright

    Affiliations: Division of Opthalmology, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
  • Pages: 1275-1281
    |
    Published online on: February 27, 2014
       https://doi.org/10.3892/ijmm.2014.1676
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Abstract

Studies have shown that an overproduction of mitochondrial reactive oxygen species (ROS) is an initiating cause in the pathogenesis of diabetic complications. However, uncoupling protein 2 (UCP2) can protect retinal vascular endothelial cells from damage by inhibiting the overproduction of mitochondrial ROS, although the protective mechanism involved is not completely clear. This study aimed to assess the effect and mechanism of UCP2 on the apoptosis of human umbilical vein endothelial cells (HUVECs). HUVECs were cultured in normal glucose (NG, 5.5 mmol/l) or high glucose (HG, 30 mmol/l) medium in the presence or absence of UCP2+/+ lentiviral transfection. Lentivirus-mediated UCP2 overexpression inhibited the apoptosis of HUVECs induced by HG. Treatment with HG resulted in the upregulation of caspase-3 and cytochrome c and the downregulation of Bcl-2 in vitro. Furthermore, compared with the NG group, the rate of apoptosis was significantly increased in the HG group. On day two post-infection, NG cells showed significantly greater HUVEC cell proliferation than HG cells. Notably, UCP2 overexpression inhibited these processes. Taken together, these results suggest that UCP2 promotes cell proliferation and inhibits HG-induced apoptosis in HUVECs via the Bcl-2 up‑ and downregulation of caspase-3 and cytochrome c in vitro. This may provide experimental evidence for the application of UCP2 as a new protective factor for diabetic complications, such as diabetic retinopathy.
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Copy and paste a formatted citation
Spandidos Publications style
He Y, Wang N, Shen Y, Zheng Z and Xu X: Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells. Int J Mol Med 33: 1275-1281, 2014.
APA
He, Y., Wang, N., Shen, Y., Zheng, Z., & Xu, X. (2014). Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells. International Journal of Molecular Medicine, 33, 1275-1281. https://doi.org/10.3892/ijmm.2014.1676
MLA
He, Y., Wang, N., Shen, Y., Zheng, Z., Xu, X."Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells". International Journal of Molecular Medicine 33.5 (2014): 1275-1281.
Chicago
He, Y., Wang, N., Shen, Y., Zheng, Z., Xu, X."Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells". International Journal of Molecular Medicine 33, no. 5 (2014): 1275-1281. https://doi.org/10.3892/ijmm.2014.1676
Copy and paste a formatted citation
x
Spandidos Publications style
He Y, Wang N, Shen Y, Zheng Z and Xu X: Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells. Int J Mol Med 33: 1275-1281, 2014.
APA
He, Y., Wang, N., Shen, Y., Zheng, Z., & Xu, X. (2014). Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells. International Journal of Molecular Medicine, 33, 1275-1281. https://doi.org/10.3892/ijmm.2014.1676
MLA
He, Y., Wang, N., Shen, Y., Zheng, Z., Xu, X."Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells". International Journal of Molecular Medicine 33.5 (2014): 1275-1281.
Chicago
He, Y., Wang, N., Shen, Y., Zheng, Z., Xu, X."Inhibition of high glucose-induced apoptosis by uncoupling protein 2 in human umbilical vein endothelial cells". International Journal of Molecular Medicine 33, no. 5 (2014): 1275-1281. https://doi.org/10.3892/ijmm.2014.1676
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