Asian Pacific Journal of Cancer Prevention

  • 제13권11호
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  • Pages.5725-5728
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  • 2012
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  • 1513-7368(pISSN)
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  • 2476-762X(eISSN)
아시아태평양암예방학회 (Asian Pacific Journal of Cancer Prevention)
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Deregulated Expression of Cry1 and Cry2 in Human Gliomas

  • Luo, Yong (Department of Neurosurgery, The First People's Hospital of Jingmen) ;
  • Wang, Fan (Department of Neurosurgery, The First People's Hospital of Jingmen) ;
  • Chen, Lv-An (Department of Neurosurgery, The First People's Hospital of Jingmen) ;
  • Chen, Xiao-Wei (Department of Neurosurgery, The First People's Hospital of Jingmen) ;
  • Chen, Zhi-Jun (Department of Neurosurgery, The First People's Hospital of Jingmen) ;
  • Liu, Ping-Fei (Department of Neurosurgery, The First People's Hospital of Jingmen) ;
  • Li, Fen-Fen (Department of Neurosurgery, The First People's Hospital of Jingmen) ;
  • Li, Cai-Yan (Department of Neurosurgery, The Second People's Hospital of Jingmen) ;
  • Liang, Wu (Department of Neurosurgery, The First People's Hospital of Jingmen)
  • 발행 : 2012.11.30
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초록

Growing evidence shows that deregulation of the circadian clock plays an important role in the development of malignant tumors, including gliomas. However, the molecular mechanisms of gene chnages controlling circadian rhythm in glioma cells have not been explored. Using real time polymerase chain reaction and immunohistochemistry techniques, we examined the expression of two important clock genes, cry1 and cry2, in 69 gliomas. In this study, out of 69 gliomas, 38 were cry1-positive, and 51 were cry2-positive. The expression levels of cry1 and cry2 in glioma cells were significantly different from the surrounding non-glioma cells (P<0.01). The difference in the expression rate of cry1 and cry 2 in high-grade (grade III and IV) and low-grade (grade 1 and II) gliomas was non-significant (P>0.05) but there was a difference in the intensity of immunoactivity for cry 2 between high-grade gliomas and low-grade gliomas (r=-0.384, P=0.021). In this study, we found that the expression of cry1 and cry2 in glioma cells was much lower than in the surrounding non-glioma cells. Therefore, we suggest that disturbances in cry1 and cry2 expression may result in the disruption of the control of normal circadian rhythm, thus benefiting the survival of glioma cells. Differential expression of circadian clock genes in glioma and non-glioma cells may provide a molecular basis for the chemotherapy of gliomas.

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