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| Content Provider | PubMed Central |
|---|---|
| Author | Xue, Mei Li, Xu Wu, Wenjing Zhang, Shuwan Wu, Shouzhen Li, Zhengkun Chen, Wei |
| Copyright Year | 2014 |
| Abstract | Long non-coding RNA urothelial carcinoma associated 1 (lncRNA-UCA1) is upregulated in bladder cancer and plays a pivotal role in bladder cancer progression and metastasis. Recent studies and our research found that lncRNA-UCA1 may be an important biomarker and therapeutic target for bladder cancer. However, the molecular mechanism involved in the upregulation of lncRNA-UCA1 in bladder cancer is largely unknown. In the present study, we showed that lncRNA-UCA1 expression in bladder cancer cells was upregulated by transcription factor CCAAT/enhancer binding protein α (C/EBPα), which was the only candidate transcription factor simultaneously predicted by a total of five bioinformatical software programs. Electrophoretic mobility shift assay and chromatin immunoprecipitation assay indicated that C/EBPα bound to the lncRNA-UCA1 core promoter region in vitro and in vivo. The luciferase assays further showed that there was a point mutation (A231G) in the C/EBPα binding site of the lncRNA-UCA1 core promoter in various bladder cancer cell lines, which in turn significantly increased the transcriptional activity of lncRNA-UCA1. We also demonstrated that C/EBPα siRNA treatment contributed to the downregulation of lncRNA-UCA1 expression, whereas overexpression of C/EBPα enhanced lncRNA-UCA1 expression. Furthermore, lncRNA-UCA1 transcriptional repression by C/EBPα siRNA sharply reduced cell viability and induced cell apoptosis in vitro. Collectively, our results provide a novel therapeutic strategy for bladder cancer by effectively interrupting the binding of the lncRNA-UCA1 promoter and certain transcription factors, so as to reverse the upregulation of lncRNA-UCA1 and prevent bladder cancer progression. |
| Related Links | http://dx.doi.org/10.3892/or.2014.3092 |
| Ending Page | 2000 |
| Page Count | 8 |
| Starting Page | 1993 |
| File Format | |
| ISSN | 1021335X |
| e-ISSN | 17912431 |
| Journal | Oncology Reports |
| Issue Number | 5 |
| Volume Number | 31 |
| Language | English |
| Publisher | D.A. Spandidos |
| Publisher Date | 2014-03-01 |
| Access Restriction | Open |
| Rights Holder | D.A. Spandidos |
| Subject Keyword | Cancer Research Oncology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cancer Research Oncology |
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