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Published in: Tumor Biology 10/2016

01-10-2016 | Original Article

Depletion of Dicer promotes epithelial ovarian cancer progression by elevating PDIA3 expression

Authors: Ying Zhu, Liqiong Cai, Jing Guo, Na Chen, Xiaoqing Yi, Yong Zhao, Jing Cai, Zehua Wang

Published in: Tumor Biology | Issue 10/2016

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Abstract

Dicer is an essential component of the microRNA (miRNA) processing machinery whose low expression is associated with advanced stage and poor clinical outcome in epithelial ovarian cancer. To investigate the functional relevance of Dicer in epithelial ovarian cancer and to identify its downstream effectors, two-dimensional gel electrophoresis combined with mass spectrometry was used for proteomic profiling. Dicer depletion promoted ovarian cancer cell proliferation and migration accompanied by a global upregulation of proteins. Twenty-six proteins, 7 upregulated and 19 downregulated, were identified. The functions of the identified proteins and their interactions were bioinformatically analyzed. Among them, protein disulfide-isomerase A3 (PDIA3) was considered to be a potential target protein of Dicer. PDIA3 repression by siRNA could significantly relieve the proliferation- and migration-promoting effect mediated by Dicer depletion in vitro and in vivo. Moreover, the miRNAs targeting PDIA3 were decreased in cells with Dicer depletion. In summary, low Dicer expression contributes to epithelial ovarian cancer progression by elevating PDIA3 expression.
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Metadata
Title
Depletion of Dicer promotes epithelial ovarian cancer progression by elevating PDIA3 expression
Authors
Ying Zhu
Liqiong Cai
Jing Guo
Na Chen
Xiaoqing Yi
Yong Zhao
Jing Cai
Zehua Wang
Publication date
01-10-2016
Publisher
Springer Netherlands
Published in
Tumor Biology / Issue 10/2016
Print ISSN: 1010-4283
Electronic ISSN: 1423-0380
DOI
https://doi.org/10.1007/s13277-016-5218-4

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