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Please use this identifier to cite or link to this item:
https://ir.csmu.edu.tw:8080/ir/handle/310902500/17970
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| Title: | MZF-1/Elk-1 Complex Binds to Protein Kinase Cα Promoter and Is Involved in Hepatocellular Carcinoma |
| Authors: | Yue, Chia-Herng
Huang, Chih-Yang
Tsai, Jen-Hsiang
Hsu, Chih-Wei
Hsieh, Yi-Hsien
Lin, Ho
Liu, Jer-Yuh |
| Contributors: | 中山醫大 |
| Date: | 2015 |
| Issue Date: | 2017-07-13T08:41:20Z (UTC)
|
| ISSN: | 1932-6203 |
| Abstract: | Abstract
In this study, the molecular mechanism of protein kinase C alpha (PKCα) gene regulation in hepatocellular carcinoma (HCC) involving Ets-like protein-1 (Elk-1) and myeloid zinc finger-1 (MZF-1) was investigated. The luciferase reporter assay results revealed that the presence of both MZF-1 and Elk-1 significantly contributed to the upregulation of PKCα gene transcription activity, and the transcriptional activity decreased when the transfection included a DNA-binding-deficient (∆DBD) gene vector of either MZF-1 or Elk-1 DNA-binding deficiency (MZF-1∆DBD or Elk-1∆DBD), thereby indicating that the enhanced expression of PKCα was caused by the binding of MZF-1 and/or Elk-1 with the PKCα promoter. We investigated MZF-1 and Elk-1 to determine whether they bind to each other. The results of immunoprecipitation (IP), Co-IP, chromatin IP (ChIP), and Re-ChIP analyses indicated that Elk-1 can directly bind to the N-terminal region of MZF-1 and MZF-1 can directly bind to the C-terminal region of Elk-1 to form a complex before attaching to the PKCα promoter. Furthermore, when MZF-1∆DBD or Elk-1∆DBD was added to the cells, PKCα expression decreased, and cell proliferation, migration, invasion, and tumorigenicity also decreased. These findings suggest that PKCα expression in HCC could be stimulated by the formation of MZF-1/Elk-1 complex, which directly binds to the PKCα promoter. |
| URI: | https://doi.org/10.1371/journal.pone.0127420
https://ir.csmu.edu.tw:8080/ir/handle/310902500/17970 |
| Relation: | PLoS One. 2015 May 26;10(5):e0127420 |
| Appears in Collections: | [醫學系] 期刊論文
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