Hart, Martin and Wach, Sven and Nolte, Elke and Szczyrba, Jaroslaw and Menon, Roopika and Taubert, Helge and Hartmann, Arndt and Stoehr, Robert and Wieland, Wolf and Graesser, Friedrich A. and Wullich, Bernd (2013) The proto-oncogene ERG is a target of microRNA miR-145 in prostate cancer. FEBS JOURNAL, 280 (9). pp. 2105-2116. ISSN 1742-464X,
Full text not available from this repository. (Request a copy)Abstract
Prostate cancer is a leading cause of cancer mortality in men. One of the distinct characteristics of prostate cancer is over-expression of the ERG proto-oncogene. The TMPRSS2ERG gene fusion, the most common gene fusion, is found in approximately 50% of prostate cancer cases. We show that certain microRNAs are extensively deregulated in prostate cancer cell lines and primary clinical cancer samples. MicroRNAs are capable of modulating post-transcriptional gene expression via inhibition of protein synthesis. Independent target prediction methods have indicated that the 3 untranslated region of the ERG mRNA is a potential target of miR-145. miR-145 is consistently down-regulated in prostate cancer. Here we show that the ERG 3 untranslated region is a regulative target of miR-145 invitro. Ectopic expression of miR-145 led to a reduction in expression of the ERG protein. We analyzed 26 prostate cancer samples and corresponding normal tissue. ERG protein expression was found to be elevated in the tumor samples, together with increased expression of several ERG isoforms. We identified ERG proteins of 35 and 24kDa, which may represent unknown ERG splice variants. Analyses of miR-145 and ERG mRNA expression revealed a general down-regulation of miR-145 irrespective of the presence or absence of translocations involving ERG. This observation indicates that down-regulation of miR-145 may contribute to the increased expression of most ERG splice variants sharing the miR-145 target sequence in their 3 untranslated region.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TUMOR-SUPPRESSOR MIR-145; EXPRESSION; CARCINOMA; FUSION; PROTEIN; GENE; QUANTIFICATION; HETEROGENEITY; REARRANGEMENT; ONCOGENE; gene expression; gene regulation; post-transcriptional; non-coding RNA; oncogene |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Urologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Apr 2020 13:00 |
| Last Modified: | 15 Apr 2020 13:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16723 |
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