Abstract
The expression of long non-coding RNAs (lncRNAs) is dysregulated in hepatocellular carcinoma (HCC). However, the functions and contributions of lncRNAs remain largely unknown. Here, we identified a critical role of SNHG6-003 in HCC. We found that five SNHG6 transcripts were differentially expressed in HCC tissues while only the SNHG6-003 had an oncogenic function. Ectopic expression of SNHG6-003 in HCC cells promoted cell proliferation and induced drug resistance, whereas SNHG6-003 knockdown promoted apoptosis. Moreover, SNHG6-003 functioned as a competitive endogenous RNA (ceRNA), effectively becoming sponge for miR-26a/b and thereby modulating the expression of transforming growth factor-β-activated kinase 1 (TAK1). Importantly, expression analysis revealed that both SNHG6-003 and TAK1 were upregulated in human cancers, exhibiting a co-expression pattern. In HCC patients, high expression of SNHG6-003 closely correlated with tumor progression and shorter survival. Thus, targeting the ceRNA network involving SNHG6-003 may be used as a treatment strategy against HCC.
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Acknowledgements
This work was supported by the National Nature Science Foundation of China (Grant Nos. 81172586, 81401180, 81372283 and 91540111), Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2015), Natural Science Funding of Guangdong Province (Grant No. 2014A030311013) and postdoctoral fellowship from American Heart Association 16POST26400005 (to XL). LX thanks Dr Hang Yin (University of Georgia) for support of the studies proposed in this manuscript.
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Cao, C., Zhang, T., Zhang, D. et al. The long non-coding RNA, SNHG6-003, functions as a competing endogenous RNA to promote the progression of hepatocellular carcinoma. Oncogene 36, 1112–1122 (2017). https://doi.org/10.1038/onc.2016.278
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DOI: https://doi.org/10.1038/onc.2016.278
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