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Comprehensive profile of differentially expressed circular RNAs reveals that hsa_circ_0000069 is upregulated and promotes cell proliferation, migration, and invasion in colorectal cancer

Authors Guo J, Li J, Zhu C, Feng W, Shao J, Wan L, Huang M, He J

Received 26 September 2016

Accepted for publication 2 November 2016

Published 9 December 2016 Volume 2016:9 Pages 7451—7458

DOI https://doi.org/10.2147/OTT.S123220

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Amy Norman

Peer reviewer comments 3

Editor who approved publication: Dr Ingrid Espinoza


Jia-ni Guo,* Jin Li,* Chang-li Zhu,* Wan-ting Feng, Jing-xian Shao, Li Wan, Ming-de Huang, Jing-dong He

Department of Medical Oncology, Huai’an First People’s Hospital, Nanjing Medical University, Huai’an City, Jiangsu Province, People’s Republic of China

*These authors contributed equally to this work

Background: Nowadays, despite great progress in cancer research, the detailed mechanisms of colorectal cancer (CRC) are still poorly understood. Circular RNAs (circRNAs), a new star of the non-coding RNA network, have been identified as critical regulators in various cancers, including CRC.
Methods and results: In this study, by using unsupervised hierarchical clustering analysis, a novel dysregulated circRNA, hsa_circ_0000069, was found. The expression of hsa_circ_0000069 was measured in 30 paired CRC tissues and adjacent noncancerous tissues using quantitative polymerase chain reaction. A high expression of hsa_circ_0000069 was observed in CRC tissues and correlated with patients’ age and tumor, node, metastasis (TNM) stage (P<0.05). Furthermore, by using specifically designed siRNAs in CRC cells, a functional analysis was performed which revealed that hsa_circ_0000069 knockdown could notably inhibit cell proliferation, migration, and invasion, and induce G0/G1 phase arrest of cell cycle in vitro.
Conclusion: This study’s findings are the first to demonstrate that hsa_circ_0000069, an important regulator in cancer progression, could be a promising target in the diagnosis and therapy in colorectal cancer.

Keywords: circular RNA, colorectal cancer, regulation, hsa_circ_0000069

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