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Microarray profiles reveal that circular RNA hsa_circ_0007385 functions as an oncogene in non-small cell lung cancer tumorigenesis

  • Ming-Ming Jiang
  • Zhi-Tao Mai
  • Shan-Zhi Wan
  • Yu-Min Chi
  • Xin Zhang
  • Bao-Hua Sun
  • Qing-Guo DiEmail author
Original Article – Cancer Research

Abstract

Objective

Circular RNAs (circRNAs) are a novel class of non-protein-coding RNA. Emerging evidence indicates that circRNAs participate in the regulation of many pathophysiological processes. This study aims to explore the expression profiles and pathological effects of circRNAs in non-small cell lung cancer (NSCLC).

Methods

Human circRNAs microarray analysis was performed to screen the expression profile of circRNAs in NSCLC tissue. Expressions of circRNA and miRNA in NSCLC tissues and cells were quantified by qRTPCR. Functional experiments were performed to investigate the biological functions of circRNA, including CCK-8 assay, colony formation assay, transwell assay and xenograft in vivo assay.

Results

Human circRNAs microarray revealed a total 957 abnormally expressed circRNAs (> twofold, P < 0.05) in NSCLC tissue compared with adjacent normal tissue. In further studies, hsa_circ_0007385 was significantly up regulated in NSCLC tissue and cells. In vitro experiments with hsa_circ_0007385 knockdown resulted in significant suppression of the proliferation, migration and invasion of NSCLC cells. In vivo xenograft assay using hsa_circ_0007385 knockdown, significantly reduced tumor growth. Bioinformatics analysis and luciferase reporter assay verified the potential target miR-181, suggesting a possible regulatory pathway for hsa_circ_0007385.

Conclusion

In summary, results suggest hsa_circ_0007385 plays a role in NSCLC tumorigenesis, providing a potential therapeutic target for NSCLC.

Keywords

Non-small cell lung cancer Circular RNA Hsa_circ_0007385 Oncogene MiR-181 

Notes

Acknowledgements

This work was supported by Central Laboratory of Cangzhou Central Hospital.

Compliance with ethical standards

Conflict of interest

All the authors declare that they have no competing interests.

Research involving human participants and/or animals

All procedures performed in studies involving human participants were in accordance with the ethical standards of the Cangzhou Central Hospital. This article does not contain any studies with animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of RespirationCangzhou Central HospitalCangzhou CityChina

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