4.3 Article

CRNDE affects the malignant biological characteristics of human glioma stem cells by negatively regulating miR-186

Journal

ONCOTARGET
Volume 6, Issue 28, Pages 25339-25355

Publisher

IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.4509

Keywords

long non-coding RNAs; CRNDE; microRNAs; miR-186; glioma stem cells

Funding

  1. Natural Science Foundation of China [81172197, 81171131, 81272564, 81272795, 81201800, 81372484, 81372682]
  2. Shenyang Science and Technology Plan Projects [F13-220-9-15, F13-316-1-16, F13-316-1-19]
  3. Shengjing hospital [201304]

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The long non-coding RNA Colorectal neoplasia differentially expressed (CRNDE) is a novel gene that activated early in colorectal neoplasia, but it is also up-regulated in many other solid tumors. Herein, the function and underlying mechanism of CRNDE in regulating glioma stem cells (GSCs) were investigated. We found that CRNDE expression was up-regulated while miR-186 expression was down-regulated in GSCs. Overexpression of CRNDE could promote the cellular proliferation, migration, invasion and inhibit the apoptosis in GSCs. Overexpression of miR-186 exerted functions of inhibiting the proliferation, migration and invasion of GSCs and promoting apoptosis. And CRNDE decreased the expression levels of XIAP and PAK7 by binding to miR-186 and negatively regulating it. In addition, miR-186 binded to XIAP and PAK7 3'UTR region, and decrease the expression of them, thus regulating the expression levels of downstream target proteins such as caspase 3, BAD, cyclin D1 and MARK2. The in vivo effect of CRNDE and miR-186 showed that the tumor formation rate was minimum in tumor-bearing nude mice with the knockdown of CRNDE and the overexpression of miR-186. In conclusion, CRNDE played an oncogenic role of GSCs through the negative regulation of miR-186. Both CRNDE and miR-186 could be regarded as potential targets in the glioma therapy.

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