期刊
ONCOGENE
卷 36, 期 9, 页码 1191-1199出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/onc.2016.282
关键词
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资金
- Research Program of the Project for Development of Innovative Research on Cancer Therapeutics (P-Direct)
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Japan Society for the Promotion of Science [13J08104]
- Grants-in-Aid for Scientific Research [13J08104] Funding Source: KAKEN
Long non-coding RNAs (lncRNAs) are frequently dysregulated in a variety of human cancers. However, their biological roles in these cancers remain incompletely understood. In this study, we analyze the gene expression profiles of colon cancer tissues and identify a previously unannotated lncRNA, FLJ39051, that we term GSEC (G-quadruplex-forming sequence containing lncRNA), as a lncRNA that is upregulated in colorectal cancer. We further demonstrate that knockdown of GSEC results in the reduction of colon cancer cell motility. We also show that GSEC binds to the DEAH box polypeptide 36 (DHX36) RNA helicase via its G-quadruplex-forming sequence and inhibits DHX36 G-quadruplex unwinding activity. Moreover, knockdown of DHX36 restores the reduced migratory activity of colon cancer cells caused by GSEC knockdown. These results suggest that GSEC plays an important role in colon cancer cell migration by inhibiting the function of DHX36 via its G-quadruplex structure.
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