Telomerase- and angiogenesis-related gene responses to irradiation in human umbilical vein endothelial cells

  • Authors:
    • Hyun Chang
    • Sun Young Rha
    • Hei-Cheul Jeung
    • Kyu Hyun Park
    • Tae Soo Kim
    • Yong-Bae Kim
    • Hyun Cheol Chung
  • View Affiliations

  • Published online on: March 13, 2013     https://doi.org/10.3892/ijmm.2013.1300
  • Pages: 1202-1208
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Abstract

In this study, we investigated the effects of ionizing radiation (IR) on human umbilical vein endothelial cells (HUVECs) in the context of senescence. HUVECs at passage number (PN)1, PN2 and PN3 were exposed to irradiation (2 Gy). The growth rate of the HUVECS was measured by proliferation assay and senescence-associated β-galactosidase assay was used to measure the number of senescent cells. Telomerase activity and the expression of telomerase- and angiogenesis-related genes were measured by telomerase assay and real-time PCR, respectively. The number of senescent cells was significantly increased in the irradiated HUVECs at all PNs. Compared to the controls, telomerase activity, the expression of human telomerase reverse transcriptase (hTERT) and c-Myc in the irradiated HUVECs were downregulated during serial passage. The downregulation of vascular endothelial growth factor (VEGF) was observed in the irradiated HUVECs as the PN increased. The data presented in this study may aid in the understanding of the mechanisms behind IR‑induced EC senescence and telomerase- and angiogenesis‑related gene response.
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May 2013
Volume 31 Issue 5

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Chang H, Rha SY, Jeung H, Park KH, Kim TS, Kim Y and Chung HC: Telomerase- and angiogenesis-related gene responses to irradiation in human umbilical vein endothelial cells. Int J Mol Med 31: 1202-1208, 2013.
APA
Chang, H., Rha, S.Y., Jeung, H., Park, K.H., Kim, T.S., Kim, Y., & Chung, H.C. (2013). Telomerase- and angiogenesis-related gene responses to irradiation in human umbilical vein endothelial cells. International Journal of Molecular Medicine, 31, 1202-1208. https://doi.org/10.3892/ijmm.2013.1300
MLA
Chang, H., Rha, S. Y., Jeung, H., Park, K. H., Kim, T. S., Kim, Y., Chung, H. C."Telomerase- and angiogenesis-related gene responses to irradiation in human umbilical vein endothelial cells". International Journal of Molecular Medicine 31.5 (2013): 1202-1208.
Chicago
Chang, H., Rha, S. Y., Jeung, H., Park, K. H., Kim, T. S., Kim, Y., Chung, H. C."Telomerase- and angiogenesis-related gene responses to irradiation in human umbilical vein endothelial cells". International Journal of Molecular Medicine 31, no. 5 (2013): 1202-1208. https://doi.org/10.3892/ijmm.2013.1300