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microRNA 31 functions as an endometrial cancer oncogene by suppressing Hippo tumor suppressor pathway

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/56760

Title: microRNA 31 functions as an endometrial cancer oncogene by suppressing Hippo tumor suppressor pathway
Authors: Mitamura, Takashi Browse this author
Watari, Hidemichi Browse this author →KAKEN DB
Wang, Lei Browse this author
Kanno, Hiromi Browse this author
Kitagawa, Makiko Browse this author
Hassan, Mohamed Kamel Browse this author
Kimura, Taichi Browse this author →KAKEN DB
Tanino, Mishie Browse this author →KAKEN DB
Nishihara, Hiroshi Browse this author →KAKEN DB
Tanaka, Shinya Browse this author →KAKEN DB
Sakuragi, Noriaki Browse this author →KAKEN DB
Keywords: Endometrial cancer
microRNA 31
LATS2
cyclin D1
Hippo pathway
Issue Date: 29-Apr-2014
Publisher: Biomed Central Ltd
Journal Title: Molecular Cancer
Volume: 13
Start Page: 97
Publisher DOI: 10.1186/1476-4598-13-97
PMID: 24779718
Abstract: Background: We aimed to investigate whether MIR31 is an oncogene in human endometrial cancer and identify the target molecules associated with the malignant phenotype. Methods: We investigated the growth potentials of MIR31-overexpressing HEC-50B cells in vitro and in vivo. In order to identify the target molecule of MIR31, a luciferase reporter assay was performed, and the corresponding downstream signaling pathway was examined using immunohistochemistry of human endometrial cancer tissues. We also investigated the MIR31 expression in 34 patients according to the postoperative risk of recurrence. Results: The overexpression of MIR31 significantly promoted anchorage-independent growth in vitro and significantly increased the tumor forming potential in vivo. MIR31 significantly suppressed the luciferase activity of mRNA combined with the LATS2 3'-UTR and consequently promoted the translocation of YAP1, a key molecule in the Hippo pathway, into the nucleus. Meanwhile, the nuclear localization of YAP1 increased the transcription of CCND1. Furthermore, the expression levels of MIR31 were significantly increased (10.7-fold) in the patients (n = 27) with a high risk of recurrence compared to that observed in the low-risk patients (n = 7), and this higher expression correlated with a poor survival. Conclusions: MIR31 functions as an oncogene in endometrial cancer by repressing the Hippo pathway. MIR31 is a potential new molecular marker for predicting the risk of recurrence and prognosis of endometrial cancer.
Rights: http://creativecommons.org/licenses/by/2.0/
Type: article
URI: http://hdl.handle.net/2115/56760
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡利 英道

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