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| Content Provider | PubMed Central |
|---|---|
| Author | Terasawa, K. Toyota, M. Sagae, S. Ogi, K. Suzuki, H. Sonoda, T. Akino, K. Maruyama, R. Nishikawa, N. Imai, K. Shinomura, Y. Saito, T. Tokino, T. |
| Copyright Year | 2006 |
| Abstract | Transcription factor 2 gene (TCF2) encodes hepatocyte nuclear factor 1β (HNF1β), a transcription factor associated with development and metabolism. Mutation of TCF2 has been observed in renal cell cancer, and by screening aberrantly methylated genes, we have now identified TCF2 as a target for epigenetic inactivation in ovarian cancer. TCF2 was methylated in 53% of ovarian cancer cell lines and 26% of primary ovarian cancers, resulting in loss of the gene's expression. TCF2 expression was restored by treating cells with a methyltransferase inhibitor, 5-aza-2′deoxycitidine (5-aza-dC). In addition, chromatin immunoprecipitation showed deacetylation of histone H3 in methylated cells and, when combined with 5-aza-dC, the histone deacetylase inhibitor trichostatin A synergistically induced TCF2 expression. Epigenetic inactivation of TCF2 was also seen in colorectal, gastric and pancreatic cell lines, suggesting general involvement of epigenetic inactivation of TCF2 in tumorigenesis. Restoration of TCF2 expression induced expression of HNF4α, a transcriptional target of HNF1β, indicating that epigenetic silencing of TCF2 leads to alteration of the hepatocyte nuclear factor network in tumours. These results suggest that TCF2 is involved in the development of ovarian cancers and may represent a useful target for their detection and treatment. |
| Related Links | http://dx.doi.org/10.1038/sj.bjc.6602984 |
| Ending Page | 921 |
| Page Count | 8 |
| Starting Page | 914 |
| File Format | |
| ISSN | 00070920 |
| e-ISSN | 15321827 |
| Journal | British Journal of Cancer |
| Issue Number | 6 |
| Volume Number | 94 |
| Language | English |
| Publisher | Nature Publishing Group |
| Publisher Date | 2006-03-27 |
| Access Restriction | Open |
| Rights Holder | Nature Publishing Group |
| Subject Keyword | Cancer Research Oncology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cancer Research Oncology |
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