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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Transl+Res
2017 ; 9
(4
): 1977-1989
Nephropedia Template TP
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Long noncoding RNA CRNDE activates Wnt/?-catenin signaling pathway through acting
as a molecular sponge of microRNA-136 in human breast cancer
#MMPMID28469804
Huan J
; Xing L
; Lin Q
; Xui H
; Qin X
Am J Transl Res
2017[]; 9
(4
): 1977-1989
PMID28469804
show ga
Long non-coding RNAs (lncRNAs) serve critical roles in the tumorigenesis and
development of multiple human malignancies. Herein, we aimed to explore the
biological and clinical significance of lncRNA CRNDE in human breast cancer (BC).
The expression of CRNDE in BC tissues and cell lines was detected, and the
association between CRNDE expression and clinicopathologic features of BC
patients was also analyzed. Novel targets of CRNDE were identified through a
bioinformatics search and confirmed using a dual-luciferase reporter system. Gain
and loss-of-function studies were carried out to verify whether CRNDE exerts its
biological functions through its downstream target. CCK-8, colony formation,
wound-healing, and transwell assays were applied to detect the altered phenotypes
of BC cell lines in vitro after transfection. Tumor xenografts were created to
detect the function of CRNDE in vivo tumorigenesis. CRNDE expression is
remarkably up-regulated in BC tissue specimens and cell lines in comparison to
corresponding normal tissues and normal human breast epithelial cells.
Up-regulated CRNDE expression was greatly associated with larger tumor size,
advanced TNM stage and unfavorable prognosis of BC patients. We uncovered that
miR-136 is a bona fide binding target of CRNDE, and that up-regulation of CRNDE
promoted the mRNA and protein expressions of ?-catenin, c-myc and cyclinD1.
Overexpressed CRNDE facilitated in vitro cell proliferation, migration and
invasion of BC cells. In vivo assay showed that the average tumor volume and
weight were largest in the group of CRNDE overexpression. CRNDE might
hyperactivate the Wnt/?-catenin signaling pathway through directly repressing
miR-136 expression in BC; CRNDE could be considered as a prognostic biomarker and
therapeutic target in BC diagnosis and treatment.