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2014 ; 105
(8
): 951-5
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Long non-coding RNA UCA1 promotes glycolysis by upregulating hexokinase 2 through
the mTOR-STAT3/microRNA143 pathway
#MMPMID24890811
Li Z
; Li X
; Wu S
; Xue M
; Chen W
Cancer Sci
2014[Aug]; 105
(8
): 951-5
PMID24890811
show ga
Cancer cells preferentially metabolize glucose through aerobic glycolysis, a
phenomenon known as the Warburg effect. Emerging evidence has shown that long
non-coding RNAs (lncRNAs) act as key regulators of multiple cancers. However, it
remains largely unexplored whether and how lncRNA regulates glucose metabolism in
cancer cells. In this study, we show that lncRNA UCA1 promotes glycolysis in
bladder cancer cells, and that UCA1-induced hexokinase 2 (HK2) functions as an
important mediator in this process. We further show that UCA1 activates mTOR to
regulate HK2 through both activation of STAT3 and repression of microRNA143.
Taken together, these findings provide the first evidence that UCA1 plays a
positive role in cancer cell glucose metabolism through the cascade of
mTOR-STAT3/microRNA143-HK2, and reveal a novel link between lncRNA and the
altered glucose metabolism in cancer cells.