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2016 ; 17
(10
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Long Noncoding RNA lncCAMTA1 Promotes Proliferation and Cancer Stem Cell-Like
Properties of Liver Cancer by Inhibiting CAMTA1
#MMPMID27669232
Ding LJ
; Li Y
; Wang SD
; Wang XS
; Fang F
; Wang WY
; Lv P
; Zhao DH
; Wei F
; Qi L
Int J Mol Sci
2016[Sep]; 17
(10
): ä PMID27669232
show ga
Hepatocellular carcinoma (HCC) is the most common subtype of liver malignancy,
and it is characterized by poor prognosis because of cancer stem cell
(CSC)-mediated high postsurgical recurrence rates. Thus, targeting CSCs, or HCC
cells with CSC-like properties, is an effective strategy for HCC therapy. Here,
using long noncoding RNA (lncRNA) microarray analysis, we identified a novel
lncRNA termed lncCAMTA1 that is increased in both liver CSCs and HCC. High
lncCAMTA1 expression in HCC indicates poor clinical outcome. In vitro and in vivo
functional experiments showed that overexpression of lncCAMTA1 promotes HCC cell
proliferation, CSC-like properties, and tumorigenesis. Conversely, depletion of
lncCAMTA1 inhibits HCC cell proliferation, CSC-like properties, and
tumorigenesis. Mechanistically, we demonstrated that lncCAMTA1 physically
associates with the calmodulin binding transcription activator 1 (CAMTA1)
promoter, induces a repressive chromatin structure, and inhibits CAMTA1
transcription. Furthermore, CAMTA1 is required for the effects of lncCAMTA1 on
HCC cell proliferation and CSC-like properties, and the expression of lncCAMTA1
and CAMTA1 is significantly negatively correlated in HCC tissues. Collectively,
our study revealed the important roles and underlying molecular mechanisms of
lncCAMTA1 on HCC, and suggested that lncCAMTA1 could be an effective prognostic
factor and a potential therapeutic target for HCC.