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2016 ; 7
(ä): 12598
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LncSox4 promotes the self-renewal of liver tumour-initiating cells through
Stat3-mediated Sox4 expression
#MMPMID27553854
Nat Commun
2016[Aug]; 7
(ä): 12598
PMID27553854
show ga
Liver cancer has a tendency to develop asymptomatically in patients, so most
patients are diagnosed at a later stage. Accumulating evidence implicates that
liver tumour-initiating cells (TICs) as being responsible for liver cancer
initiation and recurrence. However, the molecular mechanism of liver TIC
self-renewal is poorly understood. Here we discover that a long noncoding RNA
(lncRNA) termed LncSox4 is highly expressed in hepatocellular carcinoma (HCC)
tissues and in liver TICs. We find that LncSox4 is required for liver TIC
self-renewal and tumour initiation. LncSox4 interacts with and recruits Stat3 to
the Sox4 promoter to initiate the expression of Sox4, which is highly expressed
in liver TICs and required for liver TIC self-renewal. The expression level of
Sox4 correlates with HCC development, clinical severity and prognosis of
patients. Altogether, we find that LncSox4 is highly expressed in liver TICs and
is required for their self-renewal.