Effect of radiation on the Notch signaling pathway in osteoblasts

  • Authors:
    • Bing Yang
    • Quan Tang
    • Janine Post
    • Hui Zhou
    • Xiao-Bin Huang
    • Xiao-Dong Zhang
    • Qin Wang
    • Yuan-Ming Sun
    • Fei-Yue Fan
  • View Affiliations

  • Published online on: January 22, 2013     https://doi.org/10.3892/ijmm.2013.1255
  • Pages: 698-706
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Abstract

Notch signaling has been shown to be important in osteoblast differentiation. Therapeutic radiation has been shown to alter the skeletal system, yet little information is available on the changes in Notch signaling in irradiated osteoblasts. The purpose of this study was to analyze the effect of radiation therapy with 2 and 4 Gy on Notch signaling in osteoblasts. In order to assess the radiation damage on osteoblast differentiation, total RNA and protein were collected three days after exposure to radiation. The effects of radiation on Notch signaling at the early and terminal stages of osteoblastic MC3T3-E1 cell differentiation was analyzed by qRT-PCR and western blot analysis. Our study applied a previously established method to induce MC3T3-E1 cell differentiation into osteoblasts and osteoblast precursors. Our results showed that the expression of Notch receptors (Notch1-4), ligands (Jagged1, Jagged2 and Delta1), target of Notch signaling (Hes1) and markers (ALP, M-CSF, RANKL and OPG) were altered following 2 and 4 Gy of irradiation. The present research did not indicate a strong relationship between Notch1 regulation and suppression of osteoblast differentiation. We found Hes1 may play a role in the radiation effect on osteoblast differentiation. Our results indicate that radiated osteoblast precursors and osteoblasts promoted osteoclast differentiation and proliferation.
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March 2013
Volume 31 Issue 3

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

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Spandidos Publications style
Yang B, Tang Q, Post J, Zhou H, Huang X, Zhang X, Wang Q, Sun Y and Fan F: Effect of radiation on the Notch signaling pathway in osteoblasts. Int J Mol Med 31: 698-706, 2013
APA
Yang, B., Tang, Q., Post, J., Zhou, H., Huang, X., Zhang, X. ... Fan, F. (2013). Effect of radiation on the Notch signaling pathway in osteoblasts. International Journal of Molecular Medicine, 31, 698-706. https://doi.org/10.3892/ijmm.2013.1255
MLA
Yang, B., Tang, Q., Post, J., Zhou, H., Huang, X., Zhang, X., Wang, Q., Sun, Y., Fan, F."Effect of radiation on the Notch signaling pathway in osteoblasts". International Journal of Molecular Medicine 31.3 (2013): 698-706.
Chicago
Yang, B., Tang, Q., Post, J., Zhou, H., Huang, X., Zhang, X., Wang, Q., Sun, Y., Fan, F."Effect of radiation on the Notch signaling pathway in osteoblasts". International Journal of Molecular Medicine 31, no. 3 (2013): 698-706. https://doi.org/10.3892/ijmm.2013.1255