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Published in: Molecular Cancer 1/2009

Open Access 01-12-2009 | Research

δ-Catenin promotes prostate cancer cell growth and progression by altering cell cycle and survival gene profiles

Authors: Yan Zeng, Agustin Abdallah, Jian-Ping Lu, Tao Wang, Yan-Hua Chen, David M Terrian, Kwonseop Kim, Qun Lu

Published in: Molecular Cancer | Issue 1/2009

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Abstract

Background

δ-Catenin is a unique member of β-catenin/armadillo domain superfamily proteins and its primary expression is restricted to the brain. However, δ-catenin is upregulated in human prostatic adenocarcinomas, although the effects of δ-catenin overexpression in prostate cancer are unclear. We hypothesized that δ-catenin plays a direct role in prostate cancer progression by altering gene profiles of cell cycle regulation and cell survival.

Results

We employed gene transfection and small interfering RNA to demonstrate that increased δ-catenin expression promoted, whereas its knockdown suppressed prostate cancer cell viability. δ-Catenin promoted prostate cancer cell colony formation in soft agar as well as tumor xenograft growth in nude mice. Deletion of either the amino-terminal or carboxyl-terminal sequences outside the armadillo domains abolished the tumor promoting effects of δ-catenin. Quantitative RT2 Profiler™ PCR Arrays demonstrated gene alterations involved in cell cycle and survival regulation. δ-Catenin overexpression upregulated cyclin D1 and cdc34, increased phosphorylated histone-H3, and promoted the entry of mitosis. In addition, δ-catenin overexpression resulted in increased expression of cell survival genes Bcl-2 and survivin while reducing the cell cycle inhibitor p21Cip1.

Conclusion

Taken together, our studies suggest that at least one consequence of an increased expression of δ-catenin in human prostate cancer is the alteration of cell cycle and survival gene profiles, thereby promoting tumor progression.
Appendix
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Metadata
Title
δ-Catenin promotes prostate cancer cell growth and progression by altering cell cycle and survival gene profiles
Authors
Yan Zeng
Agustin Abdallah
Jian-Ping Lu
Tao Wang
Yan-Hua Chen
David M Terrian
Kwonseop Kim
Qun Lu
Publication date
01-12-2009
Publisher
BioMed Central
Published in
Molecular Cancer / Issue 1/2009
Electronic ISSN: 1476-4598
DOI
https://doi.org/10.1186/1476-4598-8-19

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