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| Content Provider | PubMed Central |
|---|---|
| Author | Kataoka, Junro Hidenori, Shiraha Horiguchi, Shigeru Sawahara, Hiroaki Uchida, Daisuke Teruya, Nagahara Masaya, Iwamuro Morimoto, Hiroki Takeuchi, Yasuto Kuwaki, Kenji Onishi, Hideki Nakamura, Shinichiro Takaki, Akinobu Nouso, Kazuhiro Yagi, Takahito Yamamoto, Kazuhide Okada, Hiroyuki |
| Copyright Year | 2016 |
| Abstract | Runt-related transcription factor 3 (RUNX3) is known to function as a tumor suppressor in gastric cancer and other types of cancers, including hepatocellular carcinoma (HCC). However, its role has not been fully elucidated. In the present study, we aimed to evaluate the role of RUNX3 in HCC. We used the human HCC cell lines Hep3B, Huh7 and HLF; RUNX3 cDNA was introduced into Hep3B and Huh7 cells, which were negative for endogenous RUNX3 expression, and RUNX3 siRNA was transfected into HLF cells, which were positive for endogenous RUNX3. We analyzed the expression of RUNX3 and multidrug resistance-associated protein (MRP) by immunoblotting. MTT assays were used to determine the effects of RUNX3 expression on 5-fluorouracil (5-FU) and cisplatin (CDDP) sensitivity. Finally, 23 HCC specimens resected from patients with HCC at Okayama University Hospital were analyzed, and correlations among immunohistochemical expression of RUNX3 protein and MRP protein were evaluated in these specimens. Exogenous RUNX3 expression reduced the expression of MRP1, MRP2, MRP3 and MRP5 in the RUNX3-negative cells, whereas knockdown of RUNX3 in the HLF cells stimulated the expression of these MRPs. An inverse correlation between RUNX3 and MRP expression was observed in the HCC tissues. Importantly, loss of RUNX3 expression contributed to 5-FU and CDDP resistance by inducing MRP expression. These data have important implications in the study of chemotherapy resistance in HCC. |
| Related Links | http://dx.doi.org/10.3892/or.2016.4681 |
| Ending Page | 2582 |
| Page Count | 7 |
| Starting Page | 2576 |
| File Format | |
| ISSN | 1021335X |
| e-ISSN | 17912431 |
| Journal | Oncology Reports |
| Issue Number | 5 |
| Volume Number | 35 |
| Language | English |
| Publisher | D.A. Spandidos |
| Publisher Date | 2016-03-01 |
| 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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