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2017 ; 7
(19
): 4836-4849
Nephropedia Template TP
gab.com Text
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English Wikipedia
Long non-coding RNA UICLM promotes colorectal cancer liver metastasis by acting
as a ceRNA for microRNA-215 to regulate ZEB2 expression
#MMPMID29187907
Chen DL
; Lu YX
; Zhang JX
; Wei XL
; Wang F
; Zeng ZL
; Pan ZZ
; Yuan YF
; Wang FH
; Pelicano H
; Chiao PJ
; Huang P
; Xie D
; Li YH
; Ju HQ
; Xu RH
Theranostics
2017[]; 7
(19
): 4836-4849
PMID29187907
show ga
Long non-coding RNAs (lncRNAs) are involved in the pathology of various tumors,
including colorectal cancer (CRC). However, the role of lncRNA in CRC liver
metastasis remains unclear. Methods: a microarray was performed to identify the
differentially expressed lncRNAs between CRC tissues with and without liver
metastasis. Survival analysis was evaluated using the Kaplan-Meier method and
assessed using the log-rank test. In vitro and in vivo assays were preformed to
explore the biological effects of the differentially expressed lncRNA in CRC
cells. Results: the lncRNA UICLM (up-regulated in colorectal cancer liver
metastasis) was significantly up-regulated in cases of CRC with liver metastasis.
Moreover, UICLM expression was higher in CRC tissues than in normal tissues, and
UICLM expression was associated with poor patient survival. Knockdown of UICLM
inhibited CRC cell proliferation, invasion, epithelial-mesenchymal transition
(EMT) and CRC stem cell formation in vitro as well as tumor growth and liver
metastasis in vivo. Ectopic expression of UICLM promoted CRC cell proliferation
and invasion. Mechanistic investigations revealed that UICLM induced its
biological effects by regulating ZEB2, as the oncogenesis facilitated by UICLM
was inhibited by ZEB2 depletion. Further study indicated that UICLM acted as a
competing endogenous RNA (ceRNA) for miR-215 to regulate ZEB2 expression.
Conclusions: taken together, our findings demonstrate how UICLM induces CRC liver
metastasis and may offer a novel prognostic marker and therapeutic target for
this disease.