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Circular RNA PTK2 Accelerates Cell Proliferation and Inhibits Cell Apoptosis in Gastric Carcinoma via miR-139-3p

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Abstract

Background

Gastric carcinoma (GC) is one of the most common malignant tumors. Although increasing studies have indicated that circular RNAs function as ideal biomarkers for multiple cancers, only a few researches elucidated the correlation between circular RNA PTK2 (circPTK2) and human cancers.

Aim

To further explore the expression status, biological function, and regulatory mechanism of circPTK2 in GC.

Methods

Bioinformatics analysis and function or mechanism experiments including RT-qPCR, flow cytometry, Western blot, luciferase reporter assay, and xenografts assays were applied to investigate the function of circPTK2 and miR-139-3p.

Results

High expression of circPTK2 was presented in GC tissues and cells. The circPTK2 knockdown notably suppressed cell proliferation and promoted cell apoptosis in GC. In mechanism, circPTK2 served as a sponge of miR-139-3p. Inhibition of miR-139-3p could reverse circPTK2 silence-mediated effects on GC cell proliferation and apoptosis. Furthermore, the xenograft tumor model was established to investigate the role of circPTK2 in GC tumor growth. Experimental results delineated that the reduction in tumor growth in response to circPTK2 knockdown was partly recovered by miR-139-3p inhibitor.

Conclusions

CircPTK2 promotes GC development by sponging miR-139-3p, which may function as an effective gene target for managing GC.

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Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgments

We thank all participators for their help.

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Authors and Affiliations

  1. Department of Digestive Surgery, Xijing Hospital of Digestive Diseases, Air Force Medical University, Xi’an, 710032, Shaanxi, China

    Deliang Yu

  2. Department of Internal Medicine No. 2, 4th (Xinyuan) Hospital of Yulin, No. 33, Renmin Middle Road, Yulin, 719000, Shaanxi, China

    Chi Zhang

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  1. Deliang Yu
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Contributions

The study conception and design, material preparation, data collection, and analysis were performed by DY and CZ; the first draft of the manuscript was written by DY; DY and CZ commented on previous versions of the manuscript. Both of the authors read and approved the final manuscript.

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Correspondence to Chi Zhang.

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Yu, D., Zhang, C. Circular RNA PTK2 Accelerates Cell Proliferation and Inhibits Cell Apoptosis in Gastric Carcinoma via miR-139-3p. Dig Dis Sci 66, 1499–1509 (2021). https://doi.org/10.1007/s10620-020-06358-4

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  • DOI: https://doi.org/10.1007/s10620-020-06358-4

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