| Effect of Cigarette Smoke Extract on the Proliferation of Human Airway Epithelial Cells and Expression and Activation of FAK |
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| 作者姓名： | 许丽 张珍祥 徐永健 |
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| 作者单位： | DepartmentofRespiratoryDiseases,TongjiHospital,TongjiMedicalCollege,HuazhongUniversityofScienceandTechnology,Wuhan430030,China |
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| 摘 要： | The effect of cigarette smoke extract (CSE) on the proliferation of human airway epithelial cells and the possible mechanism was studied. After airway epithelial cells were treated with different concentrations of CSE for 24 h, the cell proliferation was measured by MTT and the distribution of different cell cycles by flow cytometry. The FAK expression level was detected by Western blot and the degree of tyrosine phosphorylation by immunoprecipitation. The results showed that CSE could inhibit the proliferation of human airway epithelial cells, arrest the epithelial cells in G1 phase of cell cycle, dramatically decrease the number of epithelial cells in S and G2 phases； Meanwhile CSE could decrease the expression level of FAK and the degree of its tyrosine phosphorylation. The above effects of CSE were concentration-dependent. The expression of FAK and the degree of its phosphorylation was positively correlated to the increased number of epithelial cells in G1 phase, and negatively to the number of epithelial cells in S and G2 phases. It was concluded that the mechanism by which CSE could inhibit the proliferation of human epithelial cells was contributed to the increased expression and activation of FAK.
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| 关 键 词： | 吸烟 细胞增殖 上皮细胞 基因表达 细胞活性 FAK |
| 收稿时间： | 26 April 2005 |
Effect of cigarette smoke extract on the proliferation of human airway epithelial cells and expression and activation of FAK |
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| Xu Li,Zhang Zhenxiang,Xu Yongjian.Effect of Cigarette Smoke Extract on the Proliferation of Human Airway Epithelial Cells and Expression and Activation of FAK[J].Journal of Zuazhong University of Science and Technology: Medical Edition,2005,25(3):265-268. |
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| Authors: | Xu Li Zhang Zhenxiang Xu Yongjian |
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| Institution: | Department of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China |
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| Abstract: | The effect of cigarette smoke extract (CSE) on the proliferation of human airway epithelial cells and the possible mechanism was studied. After airway epithelial cells were treated with different concentrations of CSE for 24 h, the cell proliferation was measured by MTT and the distribution of different cell cycles by flow cytometry. The FAK expression level was detected by Western blot and the degree of tyrosine phosphorylation by immunoprecipitation. The results showed that CSE could inhibit the proliferation of human airway epithelial cells, arrest the epithelial cells in G1 phase of cell cycle, dramatically decrease the number of epithelial cells in S and G2 phases; Meanwhile CSE could decrease the expression level of FAK and the degree of its tyrosine phosphorylation. The above effects of CSE were concentration-dependent. The expression of FAK and the degree of its phosphorylation was positively correlated to the increased number of epithelial cells in G1 phase, and negatively to the number of epithelial cells in S and G2 phases. It was concluded that the mechanism by which CSE could inhibit the proliferation of human epithelial cells was contributed to the increased expression and activation of FAK. |
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| Keywords: | cigarette smoke extract airway epithelial cell proliferation FAK |
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