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Jiang P, Liang B, Zhang Z, Fan B, Zeng L, Zhou Z, Mao Z, Lin Q, Yao W, Shen Q. MicroRNA-146a-5p induces cell cycle arrest and enhances apoptosis in gastric cancer via targeting CDC14A. Front Cell Dev Biol 2023; 11:1181628. [PMID: 37274736 PMCID: PMC10232853 DOI: 10.3389/fcell.2023.1181628] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/02/2023] [Indexed: 06/06/2023] Open
Abstract
Objective: The present study was designed to investigate the expression of miRNA-146a-5p in gastric cancer (GC) tissues and the paired nonmalignant counterparts, to explore the influences of miRNA-146a-5p on the cell biological behavior of MKN-28 cells (highly metastatic human gastric cancer cells), and to identify the function of abnormal expression of its target gene cell division cycle 14 homolog A (CDC14A) in GC. Methods: We detected the expression of miRNA-146a-5p in formalin-fixed and paraffin-embedded (FFPE) GC tissues through microarray and quantitative real-time polymerase chain reaction (qRT-PCR). Then, we employed cell counting kit-8 (CCK-8) assays, cell cycle assays, and apoptosis analysis to uncover the latent function of miRNA-146a-5p in MKN-28 human GC cells. We also validated the target of miRNA-146a-5p via luciferase reporter assays. Results: miRNA-146a-5p levels were examined in the majority of primary GC tissues and several GC cell lines. As a result, miRNA-146a-5p levels were significantly declined in the GC tissues and cells. In addition, miRNA-146a-5p demonstrated a straight act on its 3'-untranslated region (3'-UTR) of CDC14A mRNA, accordingly decreasing the contents of CDC14A mRNA as well as its protein expression. An inverse correlation between CDC14A and miRNA-146a-5p was observed. Conclusion: The data suggest miRNA-146a-5p may contribute to inducing cell cycle arrest as well as prompting GC cell apoptosis via directly targeting CDC14A. Therefore, miRNA-146a-5p may be a potential indicator of the occurrence and development of GC.
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Affiliation(s)
- Piao Jiang
- Department of Oncology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - Bin Liang
- Department of Oncology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Zhen Zhang
- The First Affiliated Hospital of Nanchang Medical College, Institute of Clinical Medicine, Jiangxi Provincial People’s Hospital, Nanchang, China
| | - Bing Fan
- Department of Radiology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Lin Zeng
- Department of Oncology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Zhiyong Zhou
- Department of Oncology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Zhifang Mao
- Department of Oncology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Qing Lin
- Department of Thoracic Surgery, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Weirong Yao
- Department of Oncology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Qinglin Shen
- Department of Oncology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
- The First Affiliated Hospital of Nanchang Medical College, Institute of Clinical Medicine, Jiangxi Provincial People’s Hospital, Nanchang, China
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UNC5B mediates G2/M phase arrest of bladder cancer cells by binding to CDC14A and P53. Cancer Gene Ther 2020; 27:934-947. [PMID: 32372016 DOI: 10.1038/s41417-020-0175-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 04/05/2020] [Accepted: 04/08/2020] [Indexed: 12/15/2022]
Abstract
UNC5B is a known tumor suppressor gene in a variety of cancers. As a transmembrane protein, UNC5B also induces apoptosis in a P53-dependent manner. In this study, we demonstrate that UNC5B inhibits proliferation through G2/M phase arrest by mass spectrometry and bioinformatics analysis in bladder cancer cells. By combing with CDC14A and P53, UNC5B dephosphorylated P53 at Ser-315 site. This dephosphorylation facilitated G2/M phase arrest by reducing the expression of cyclin B1 and increasing the expression of p-CDK1, thus inhibiting tumor proliferation. Knockdown of CDC14A suppressed the G2/M phase arrest induced by UNC5B in vitro, and eliminated the inhibitory effect of UNC5B on tumor proliferation in vivo. Our results show that UNC5B-mediated cell cycle arrest may act as a potential treatment for bladder cancer.
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