Open Access

Research on the function and related mechanism of P27 gene in the intervertebral disc degeneration of mice

  • Authors:
    • Xiao Liu
    • Deguo Wang
    • Zhengzheng Zhang
    • Fenghui Zhu
    • Aiming Yao
    • Jiwei Tian
    • Dengshun Miao
  • View Affiliations

  • Published online on: June 12, 2017     https://doi.org/10.3892/etm.2017.4584
  • Pages: 1141-1145
  • Copyright: © Liu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

This study aims to investigate the function and related mechanism of P27 gene in intervertebral disc (IVD) degeneration of mice. X-ray, immunohistochemical staining, and alkaline phosphatase (ALP) histochemical staining were used to analyze the phenotypic difference of the intervertebral discs of 4-week-old mice with P27 gene knockout (P27‑/-) and wild‑type (WT) mice in the same brood. Protein in the intervertebral disc was extracted and western blot analysis was employed to detect the changes in the expression of related molecules in the Shh-signal pathways, including Shh, Patched, Smoothened and Gli2. As a result, the ALP histochemical staining revealed that the ALP‑positive area of mice in the P27-/- group was obviously increased compared to the 4-week-old mice of the same brood in the WT group. In addition, the Col-Ⅰ immunohistochemical staining showed that the Col-Ⅰ‑positive area of mice in the P27-/- group was significantly increased compared to mice in the WT group. Furthermore, Smo‑positive cell rate of mice in the P27-/- group was apparently increased compared to mice in the WT group. Western blot analysis revealed that in terms of changes of protein expression levels of Shh, Patched, Smoothened and Gli2 in the intervertebral disc, protein expression levels of Shh, Patched, Smoothened and Gli2 of mice in the P27-/- group were significantly increased compared to those of mice in the WT group. The results show that P27 deficiency activates the expression of Shh-signal pathway and promotes the proliferation of osteoblast, thus, playing a role in promoting IVD degeneration, which provides a scientific and reliable experimental basis for the treatment of the IVD degeneration‑related diseases in clinical practice.
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August-2017
Volume 14 Issue 2

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Liu X, Wang D, Zhang Z, Zhu F, Yao A, Tian J and Miao D: Research on the function and related mechanism of P27 gene in the intervertebral disc degeneration of mice. Exp Ther Med 14: 1141-1145, 2017
APA
Liu, X., Wang, D., Zhang, Z., Zhu, F., Yao, A., Tian, J., & Miao, D. (2017). Research on the function and related mechanism of P27 gene in the intervertebral disc degeneration of mice. Experimental and Therapeutic Medicine, 14, 1141-1145. https://doi.org/10.3892/etm.2017.4584
MLA
Liu, X., Wang, D., Zhang, Z., Zhu, F., Yao, A., Tian, J., Miao, D."Research on the function and related mechanism of P27 gene in the intervertebral disc degeneration of mice". Experimental and Therapeutic Medicine 14.2 (2017): 1141-1145.
Chicago
Liu, X., Wang, D., Zhang, Z., Zhu, F., Yao, A., Tian, J., Miao, D."Research on the function and related mechanism of P27 gene in the intervertebral disc degeneration of mice". Experimental and Therapeutic Medicine 14, no. 2 (2017): 1141-1145. https://doi.org/10.3892/etm.2017.4584