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Published in: BMC Cancer 1/2013

Open Access 01-12-2013 | Research article

OCT4 increases BIRC5 and CCND1 expression and promotes cancer progression in hepatocellular carcinoma

Authors: Lu Cao, Chunguang Li, Shuwen Shen, Yan Yan, Weidan Ji, Jinghan Wang, Haihua Qian, Xiaoqing Jiang, Zhigang Li, Mengchao Wu, Ying Zhang, Changqing Su

Published in: BMC Cancer | Issue 1/2013

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Abstract

Background

OCT4 and BIRC5 are preferentially expressed in human cancer cells and mediate cancer cell survival and tumor maintenance. However, the molecular mechanism that regulates OCT4 and BIRC5 expression is not well characterized.

Methods

By manipulating OCT4 and BIRC5 expression in hepatocellular carcinoma (HCC) cell lines, the regulatory mechanism of OCT4 on BIRC5 and CCND1 were investigated.

Results

Increasing or decreasing OCT4 expression could enhance or suppress BIRC5 expression, respectively, by regulating the activity of BIRC5 promoter. Because there is no binding site for OCT4 within BIRC5 promoter, the effect of OCT4 on BIRC5 promoter is indirect. An octamer motif for OCT4 in the CCND1 promoter has directly and partly participated in the regulation of CCND1 promoter activity, suggesting that OCT4 also could upregulated the expression of CCND1. Co-suppression of OCT4 and BIRC5 induced cancer cell apoptosis and cell cycle arrest, thereby efficiently inhibiting the proliferative activity of cancer cells and suppressing the growth of HCC xenogrfts in nude mice.

Conclusion

OCT4 can upregulate BIRC5 and CCND1 expression by increasing their promoter activity. These factors collusively promotes HCC cell proliferation, and co-suppression of OCT4 and BIRC5 is potentially beneficial for HCC treatment.
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Metadata
Title
OCT4 increases BIRC5 and CCND1 expression and promotes cancer progression in hepatocellular carcinoma
Authors
Lu Cao
Chunguang Li
Shuwen Shen
Yan Yan
Weidan Ji
Jinghan Wang
Haihua Qian
Xiaoqing Jiang
Zhigang Li
Mengchao Wu
Ying Zhang
Changqing Su
Publication date
01-12-2013
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2013
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-13-82

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