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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Guo, Xiao-jie Tang, Yun-neng Song, Jian-guo Hu, Ying Wang, Dong-mei Yuan, Xin-wang Shi, Wei-wei |
| Description | Author Affiliation: Yuan XW ( From the Laboratory of Molecular Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.) |
| Abstract | Epithelial-mesenchymal transition plays an important role in many patho-physiological processes, including cancer invasion and metastatic progression. Hepatocyte nuclear factor 6 (HNF6) has been known to be an important factor for both physiological and pathological functions in liver and pancreas. However, its role in EMT and lung cancer progression remains unidentified. We observed that HNF6 level can be down-regulated by TGF-ß1 in human lung cancer cells. Knockdown of HNF6 induced EMT and increased cell migration. In contrast, ectopically expression of HNF6 inhibited cell migration and attenuated TGF-ß1-induced EMT. The data suggest that HNF6 plays a role in maintaining epithelial phenotype, which suppresses EMT. HNF6 also inhibits both colony formation and proliferation of lung cancer cells. It pronouncedly reduced the formation of tumor xenografts in nude mice. In addition, HNF6 can activate the promoter activity of p53 by directly binding to a specific region of its promoter and therefore increase the protein level of tumor suppressor p53. p53 knockdown induced EMT and increased cell migration, whereas the opposite effect was generated by p53 overexpression. p53 knockdown also inhibited the effect of HNF6 on EMT and cell migration, indicating that p53 is required for the functions of HNF6 herein. Moreover, there is a high positive correlation among the expression levels of HNF6, p53, and E-cadherin in human lung cancer cells and tissues. The data suggest that HNF6 inhibits EMT, cell migration, and invasive growth through a mechanism involving the transcriptional activation of p53. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 43 |
| Volume Number | 288 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2013-10-25 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Adenocarcinoma Metabolism Cell Movement Epithelial-Mesenchymal Transition Hepatocyte Nuclear Factor 6 Lung Neoplasms Genetics Pathology Therapy Animals Cadherins Cell Line, Tumor Gene Expression Regulation, Neoplastic Gene Knockdown Techniques Heterografts Mice Neoplasm Invasiveness Neoplasm Transplantation Transcriptional Activation Transforming Growth Factor Beta1 Tumor Suppressor Protein P53 Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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